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Clear OKC-based PMKSA caching entries if PMK is changed
[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 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15#include "includes.h"
16
17#include "common.h"
18#include "eloop.h"
19#include "common/ieee802_11_defs.h"
20#include "common/ieee802_11_common.h"
21#include "wps/wps_i.h"
22#include "p2p_i.h"
23#include "p2p.h"
24
25
26static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
27static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
28static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
29 const u8 *sa, const u8 *data, size_t len,
30 int rx_freq);
31static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
32 const u8 *sa, const u8 *data,
33 size_t len);
34static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
40c03fd4 35static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
b22128ef
JM		 36
37
40c03fd4
JM		 38/*
39 * p2p_scan recovery timeout
40 *
41 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
42 * timeout for this to avoid hitting P2P timeout unnecessarily.
43 */
44#define P2P_SCAN_TIMEOUT 35
45
b22128ef
JM		 46/**
47 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
48 * entries will be removed
49 */
50#define P2P_PEER_EXPIRATION_AGE 300
51
52#define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
53
54static void p2p_expire_peers(struct p2p_data *p2p)
55{
56 struct p2p_device *dev, *n;
57 struct os_time now;
58
59 os_get_time(&now);
60 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
61 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
62 continue;
63 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer "
c5db8e51 64 "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr));
b22128ef
JM		 65 dl_list_del(&dev->list);
66 p2p_device_free(p2p, dev);
67 }
68}
69
70
71static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
72{
73 struct p2p_data *p2p = eloop_ctx;
74 p2p_expire_peers(p2p);
75 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
76 p2p_expiration_timeout, p2p, NULL);
77}
78
79
80static const char * p2p_state_txt(int state)
81{
82 switch (state) {
83 case P2P_IDLE:
84 return "IDLE";
85 case P2P_SEARCH:
86 return "SEARCH";
87 case P2P_CONNECT:
88 return "CONNECT";
89 case P2P_CONNECT_LISTEN:
90 return "CONNECT_LISTEN";
91 case P2P_GO_NEG:
92 return "GO_NEG";
93 case P2P_LISTEN_ONLY:
94 return "LISTEN_ONLY";
95 case P2P_WAIT_PEER_CONNECT:
96 return "WAIT_PEER_CONNECT";
97 case P2P_WAIT_PEER_IDLE:
98 return "WAIT_PEER_IDLE";
99 case P2P_SD_DURING_FIND:
100 return "SD_DURING_FIND";
101 case P2P_PROVISIONING:
102 return "PROVISIONING";
103 case P2P_PD_DURING_FIND:
104 return "PD_DURING_FIND";
105 case P2P_INVITE:
106 return "INVITE";
107 case P2P_INVITE_LISTEN:
108 return "INVITE_LISTEN";
109 default:
110 return "?";
111 }
112}
113
114
115void p2p_set_state(struct p2p_data *p2p, int new_state)
116{
117 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: State %s -> %s",
118 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
119 p2p->state = new_state;
120}
121
122
123void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
124{
125 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
126 "P2P: Set timeout (state=%s): %u.%06u sec",
127 p2p_state_txt(p2p->state), sec, usec);
128 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
129 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
130}
131
132
133void p2p_clear_timeout(struct p2p_data *p2p)
134{
135 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear timeout (state=%s)",
136 p2p_state_txt(p2p->state));
137 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
138}
139
140
141void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
142 int status)
143{
144 struct p2p_go_neg_results res;
145 p2p_clear_timeout(p2p);
146 p2p_set_state(p2p, P2P_IDLE);
147 p2p->go_neg_peer = NULL;
148
149 os_memset(&res, 0, sizeof(res));
150 res.status = status;
151 if (peer) {
c5db8e51 152 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
b22128ef
JM		 153 ETH_ALEN);
154 os_memcpy(res.peer_interface_addr, peer->intended_addr,
155 ETH_ALEN);
156 }
157 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
158}
159
160
161static void p2p_listen_in_find(struct p2p_data *p2p)
162{
163 unsigned int r, tu;
164 int freq;
165 struct wpabuf *ies;
166
167 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
168 "P2P: Starting short listen state (state=%s)",
169 p2p_state_txt(p2p->state));
170
171 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
172 p2p->cfg->channel);
173 if (freq < 0) {
174 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
175 "P2P: Unknown regulatory class/channel");
176 return;
177 }
178
179 os_get_random((u8 *) &r, sizeof(r));
180 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
181 p2p->min_disc_int) * 100;
182
183 p2p->pending_listen_freq = freq;
184 p2p->pending_listen_sec = 0;
185 p2p->pending_listen_usec = 1024 * tu;
186
187 ies = p2p_build_probe_resp_ies(p2p);
188 if (ies == NULL)
189 return;
190
191 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
192 ies) < 0) {
193 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
194 "P2P: Failed to start listen mode");
195 p2p->pending_listen_freq = 0;
196 }
197 wpabuf_free(ies);
198}
199
200
201int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
202{
203 int freq;
204 struct wpabuf *ies;
205
206 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
207 "P2P: Going to listen(only) state");
208
209 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
210 p2p->cfg->channel);
211 if (freq < 0) {
212 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
213 "P2P: Unknown regulatory class/channel");
214 return -1;
215 }
216
217 p2p->pending_listen_freq = freq;
218 p2p->pending_listen_sec = timeout / 1000;
219 p2p->pending_listen_usec = (timeout % 1000) * 1000;
220
221 if (p2p->p2p_scan_running) {
222 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
223 "P2P: p2p_scan running - delay start of listen state");
224 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
225 return 0;
226 }
227
228 ies = p2p_build_probe_resp_ies(p2p);
229 if (ies == NULL)
230 return -1;
231
232 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
233 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
234 "P2P: Failed to start listen mode");
235 p2p->pending_listen_freq = 0;
236 wpabuf_free(ies);
237 return -1;
238 }
239 wpabuf_free(ies);
240
241 p2p_set_state(p2p, P2P_LISTEN_ONLY);
242
243 return 0;
244}
245
246
247static void p2p_device_clear_reported(struct p2p_data *p2p)
248{
249 struct p2p_device *dev;
250 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
251 dev->flags &= ~P2P_DEV_REPORTED;
252}
253
254
255/**
256 * p2p_get_device - Fetch a peer entry
257 * @p2p: P2P module context from p2p_init()
258 * @addr: P2P Device Address of the peer
259 * Returns: Pointer to the device entry or %NULL if not found
260 */
261struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
262{
263 struct p2p_device *dev;
264 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
c5db8e51 265 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
b22128ef
JM		 266 return dev;
267 }
268 return NULL;
269}
270
271
272/**
273 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
274 * @p2p: P2P module context from p2p_init()
275 * @addr: P2P Interface Address of the peer
276 * Returns: Pointer to the device entry or %NULL if not found
277 */
278struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
279 const u8 *addr)
280{
281 struct p2p_device *dev;
282 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
283 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
284 return dev;
285 }
286 return NULL;
287}
288
289
290/**
291 * p2p_create_device - Create a peer entry
292 * @p2p: P2P module context from p2p_init()
293 * @addr: P2P Device Address of the peer
294 * Returns: Pointer to the device entry or %NULL on failure
295 *
296 * If there is already an entry for the peer, it will be returned instead of
297 * creating a new one.
298 */
299static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
300 const u8 *addr)
301{
302 struct p2p_device *dev, *oldest = NULL;
303 size_t count = 0;
304
305 dev = p2p_get_device(p2p, addr);
306 if (dev)
307 return dev;
308
309 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
310 count++;
311 if (oldest == NULL ||
312 os_time_before(&dev->last_seen, &oldest->last_seen))
313 oldest = dev;
314 }
315 if (count + 1 > p2p->cfg->max_peers && oldest) {
316 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
317 "P2P: Remove oldest peer entry to make room for a new "
318 "peer");
319 dl_list_del(&oldest->list);
320 p2p_device_free(p2p, oldest);
321 }
322
323 dev = os_zalloc(sizeof(*dev));
324 if (dev == NULL)
325 return NULL;
326 dl_list_add(&p2p->devices, &dev->list);
c5db8e51 327 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
b22128ef
JM		 328
329 return dev;
330}
331
332
333static void p2p_copy_client_info(struct p2p_device *dev,
334 struct p2p_client_info *cli)
335{
c5db8e51
KRK		 336 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
337 dev->info.device_name[cli->dev_name_len] = '\0';
338 dev->info.dev_capab = cli->dev_capab;
339 dev->info.config_methods = cli->config_methods;
340 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
e57ae6e1
JMB		 341 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
342 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
343 dev->info.wps_sec_dev_type_list_len);
b22128ef
JM		 344}
345
346
347static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
348 const u8 *go_interface_addr, int freq,
349 const u8 *gi, size_t gi_len)
350{
351 struct p2p_group_info info;
352 size_t c;
353 struct p2p_device *dev;
354
355 if (gi == NULL)
356 return 0;
357
358 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
359 return -1;
360
361 /*
362 * Clear old data for this group; if the devices are still in the
363 * group, the information will be restored in the loop following this.
364 */
365 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
366 if (os_memcpy(dev->member_in_go_iface, go_interface_addr,
367 ETH_ALEN) == 0) {
368 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
369 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
370 }
371 }
372
373 for (c = 0; c < info.num_clients; c++) {
374 struct p2p_client_info *cli = &info.client[c];
375 dev = p2p_get_device(p2p, cli->p2p_device_addr);
376 if (dev) {
377 /*
378 * Update information only if we have not received this
379 * directly from the client.
380 */
381 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
382 P2P_DEV_PROBE_REQ_ONLY))
383 p2p_copy_client_info(dev, cli);
384 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
385 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
386 }
387 } else {
388 dev = p2p_create_device(p2p, cli->p2p_device_addr);
389 if (dev == NULL)
390 continue;
391 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
392 p2p_copy_client_info(dev, cli);
393 dev->oper_freq = freq;
c5db8e51
KRK		 394 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
395 dev->info.p2p_device_addr,
8fd7dc1b
JB		 396 &dev->info, 1);
397 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 398 }
399
400 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
401 ETH_ALEN);
402 os_get_time(&dev->last_seen);
403 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
404 os_memcpy(dev->member_in_go_iface, go_interface_addr,
405 ETH_ALEN);
406 }
407
408 return 0;
409}
410
411
b67d0d9e
JM		 412static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req,
413 const struct p2p_message *msg)
414{
415 os_memcpy(dev->info.device_name, msg->device_name,
416 sizeof(dev->info.device_name));
417
418 if (msg->manufacturer &&
419 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
420 os_memset(dev->info.manufacturer, 0,
421 sizeof(dev->info.manufacturer));
422 os_memcpy(dev->info.manufacturer, msg->manufacturer,
423 msg->manufacturer_len);
424 }
425
426 if (msg->model_name &&
427 msg->model_name_len < sizeof(dev->info.model_name)) {
428 os_memset(dev->info.model_name, 0,
429 sizeof(dev->info.model_name));
430 os_memcpy(dev->info.model_name, msg->model_name,
431 msg->model_name_len);
432 }
433
434 if (msg->model_number &&
435 msg->model_number_len < sizeof(dev->info.model_number)) {
436 os_memset(dev->info.model_number, 0,
437 sizeof(dev->info.model_number));
438 os_memcpy(dev->info.model_number, msg->model_number,
439 msg->model_number_len);
440 }
441
442 if (msg->serial_number &&
443 msg->serial_number_len < sizeof(dev->info.serial_number)) {
444 os_memset(dev->info.serial_number, 0,
445 sizeof(dev->info.serial_number));
446 os_memcpy(dev->info.serial_number, msg->serial_number,
447 msg->serial_number_len);
448 }
449
450 if (msg->pri_dev_type)
451 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
452 sizeof(dev->info.pri_dev_type));
453 else if (msg->wps_pri_dev_type)
454 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
455 sizeof(dev->info.pri_dev_type));
456
457 if (msg->wps_sec_dev_type_list) {
458 os_memcpy(dev->info.wps_sec_dev_type_list,
459 msg->wps_sec_dev_type_list,
460 msg->wps_sec_dev_type_list_len);
461 dev->info.wps_sec_dev_type_list_len =
462 msg->wps_sec_dev_type_list_len;
463 }
464
465 if (msg->capability) {
466 dev->info.dev_capab = msg->capability[0];
467 dev->info.group_capab = msg->capability[1];
468 }
469
470 if (msg->ext_listen_timing) {
471 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
472 dev->ext_listen_interval =
473 WPA_GET_LE16(msg->ext_listen_timing + 2);
474 }
475
476 if (!probe_req) {
477 dev->info.config_methods = msg->config_methods ?
478 msg->config_methods : msg->wps_config_methods;
479 }
480}
481
482
b22128ef
JM		 483/**
484 * p2p_add_device - Add peer entries based on scan results
485 * @p2p: P2P module context from p2p_init()
486 * @addr: Source address of Beacon or Probe Response frame (may be either
487 * P2P Device Address or P2P Interface Address)
488 * @level: Signal level (signal strength of the received frame from the peer)
489 * @freq: Frequency on which the Beacon or Probe Response frame was received
490 * @ies: IEs from the Beacon or Probe Response frame
491 * @ies_len: Length of ies buffer in octets
492 * Returns: 0 on success, -1 on failure
493 *
494 * If the scan result is for a GO, the clients in the group will also be added
17bef1e9
AC		 495 * to the peer table. This function can also be used with some other frames
496 * like Provision Discovery Request that contains P2P Capability and P2P Device
497 * Info attributes.
b22128ef 498 */
17bef1e9
AC		 499int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
500 const u8 *ies, size_t ies_len)
b22128ef
JM		 501{
502 struct p2p_device *dev;
503 struct p2p_message msg;
504 const u8 *p2p_dev_addr;
6f2c0607 505 int i;
b22128ef
JM		 506
507 os_memset(&msg, 0, sizeof(msg));
508 if (p2p_parse_ies(ies, ies_len, &msg)) {
509 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
510 "P2P: Failed to parse P2P IE for a device entry");
511 p2p_parse_free(&msg);
512 return -1;
513 }
514
515 if (msg.p2p_device_addr)
516 p2p_dev_addr = msg.p2p_device_addr;
517 else if (msg.device_id)
518 p2p_dev_addr = msg.device_id;
519 else {
520 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
521 "P2P: Ignore scan data without P2P Device Info or "
522 "P2P Device Id");
523 p2p_parse_free(&msg);
524 return -1;
525 }
526
80c9582a
JM		 527 if (!is_zero_ether_addr(p2p->peer_filter) &&
528 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
529 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
530 "filter for " MACSTR " due to peer filter",
531 MAC2STR(p2p_dev_addr));
532 return 0;
533 }
534
b22128ef
JM		 535 dev = p2p_create_device(p2p, p2p_dev_addr);
536 if (dev == NULL) {
537 p2p_parse_free(&msg);
538 return -1;
539 }
540 os_get_time(&dev->last_seen);
541 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
542
543 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
544 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
545 if (msg.ssid &&
546 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
547 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
548 != 0)) {
549 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
550 dev->oper_ssid_len = msg.ssid[1];
551 }
552
553 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
554 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
555 int ds_freq;
556 if (*msg.ds_params == 14)
557 ds_freq = 2484;
558 else
559 ds_freq = 2407 + *msg.ds_params * 5;
560 if (freq != ds_freq) {
561 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
562 "P2P: Update Listen frequency based on DS "
563 "Parameter Set IE: %d -> %d MHz",
564 freq, ds_freq);
565 freq = ds_freq;
566 }
567 }
568
569 if (dev->listen_freq && dev->listen_freq != freq) {
570 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
571 "P2P: Update Listen frequency based on scan "
572 "results (" MACSTR " %d -> %d MHz (DS param %d)",
c5db8e51
KRK		 573 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
574 freq, msg.ds_params ? *msg.ds_params : -1);
b22128ef
JM		 575 }
576 dev->listen_freq = freq;
f8d0131a
JM		 577 if (msg.group_info)
578 dev->oper_freq = freq;
6402fc43 579 dev->info.level = level;
b22128ef 580
b67d0d9e 581 p2p_copy_wps_info(dev, 0, &msg);
e57ae6e1 582
10c5d2a5 583 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
6f2c0607
JMB		 584 wpabuf_free(dev->info.wps_vendor_ext[i]);
585 dev->info.wps_vendor_ext[i] = NULL;
586 }
587
10c5d2a5 588 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
6f2c0607
JMB		 589 if (msg.wps_vendor_ext[i] == NULL)
590 break;
591 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
592 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
593 if (dev->info.wps_vendor_ext[i] == NULL)
594 break;
595 }
596
b22128ef
JM		 597 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, msg.group_info,
598 msg.group_info_len);
599
600 p2p_parse_free(&msg);
601
602 if (p2p_pending_sd_req(p2p, dev))
603 dev->flags |= P2P_DEV_SD_SCHEDULE;
604
605 if (dev->flags & P2P_DEV_REPORTED)
606 return 0;
607
608 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
609 "P2P: Peer found with Listen frequency %d MHz", freq);
610 if (dev->flags & P2P_DEV_USER_REJECTED) {
611 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
612 "P2P: Do not report rejected device");
613 return 0;
614 }
8fd7dc1b
JB		 615
616 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
617 !(dev->flags & P2P_DEV_REPORTED_ONCE));
618 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 619
620 return 0;
621}
622
623
624static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
625{
6f2c0607
JMB		 626 int i;
627
b22128ef
JM		 628 if (p2p->go_neg_peer == dev)
629 p2p->go_neg_peer = NULL;
630 if (p2p->invite_peer == dev)
631 p2p->invite_peer = NULL;
632 if (p2p->sd_peer == dev)
633 p2p->sd_peer = NULL;
634 if (p2p->pending_client_disc_go == dev)
635 p2p->pending_client_disc_go = NULL;
636
f5fc6032
AC		 637 /* dev_lost() device, but only if it was previously dev_found() */
638 if (dev->flags & P2P_DEV_REPORTED_ONCE)
639 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
640 dev->info.p2p_device_addr);
56eeb8f2 641
10c5d2a5 642 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
6f2c0607
JMB		 643 wpabuf_free(dev->info.wps_vendor_ext[i]);
644 dev->info.wps_vendor_ext[i] = NULL;
645 }
646
b22128ef
JM		 647 os_free(dev);
648}
649
650
651static int p2p_get_next_prog_freq(struct p2p_data *p2p)
652{
653 struct p2p_channels *c;
654 struct p2p_reg_class *cla;
655 size_t cl, ch;
656 int found = 0;
657 u8 reg_class;
658 u8 channel;
659 int freq;
660
661 c = &p2p->cfg->channels;
662 for (cl = 0; cl < c->reg_classes; cl++) {
663 cla = &c->reg_class[cl];
664 if (cla->reg_class != p2p->last_prog_scan_class)
665 continue;
666 for (ch = 0; ch < cla->channels; ch++) {
667 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
668 found = 1;
669 break;
670 }
671 }
672 if (found)
673 break;
674 }
675
676 if (!found) {
677 /* Start from beginning */
678 reg_class = c->reg_class[0].reg_class;
679 channel = c->reg_class[0].channel[0];
680 } else {
681 /* Pick the next channel */
682 ch++;
683 if (ch == cla->channels) {
684 cl++;
685 if (cl == c->reg_classes)
686 cl = 0;
687 ch = 0;
688 }
689 reg_class = c->reg_class[cl].reg_class;
690 channel = c->reg_class[cl].channel[ch];
691 }
692
693 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
694 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
695 "channel: reg_class %u channel %u -> %d MHz",
696 reg_class, channel, freq);
697 p2p->last_prog_scan_class = reg_class;
698 p2p->last_prog_scan_chan = channel;
699
700 if (freq == 2412 || freq == 2437 || freq == 2462)
701 return 0; /* No need to add social channels */
702 return freq;
703}
704
705
706static void p2p_search(struct p2p_data *p2p)
707{
708 int freq = 0;
709 enum p2p_scan_type type;
710
711 if (p2p->drv_in_listen) {
712 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
713 "in Listen state - wait for it to end before "
714 "continuing");
715 return;
716 }
717 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
718
719 if (p2p->go_neg_peer) {
720 /*
721 * Only scan the known listen frequency of the peer
722 * during GO Negotiation start.
723 */
724 freq = p2p->go_neg_peer->listen_freq;
725 if (freq <= 0)
726 freq = p2p->go_neg_peer->oper_freq;
727 type = P2P_SCAN_SPECIFIC;
728 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
729 "for freq %u (GO Neg)", freq);
730 } else if (p2p->invite_peer) {
731 /*
732 * Only scan the known listen frequency of the peer
733 * during Invite start.
734 */
735 freq = p2p->invite_peer->listen_freq;
736 if (freq <= 0)
737 freq = p2p->invite_peer->oper_freq;
738 type = P2P_SCAN_SPECIFIC;
739 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
740 "for freq %u (Invite)", freq);
741 } else if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
742 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
743 type = P2P_SCAN_SOCIAL_PLUS_ONE;
744 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
745 "(+ freq %u)", freq);
746 } else {
747 type = P2P_SCAN_SOCIAL;
748 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
749 }
750
046ef4aa
JMB		 751 if (p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
752 p2p->num_req_dev_types, p2p->req_dev_types) < 0)
753 {
b22128ef
JM		 754 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
755 "P2P: Scan request failed");
756 p2p_continue_find(p2p);
40c03fd4
JM		 757 } else {
758 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
759 p2p->p2p_scan_running = 1;
760 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
761 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
762 p2p, NULL);
b22128ef
JM		 763 }
764}
765
766
767static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
768{
769 struct p2p_data *p2p = eloop_ctx;
770 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
771 p2p_stop_find(p2p);
772}
773
774
775static int p2p_run_after_scan(struct p2p_data *p2p)
776{
777 struct p2p_device *dev;
778 enum p2p_after_scan op;
779
3f9285ff
JM		 780 if (p2p->after_scan_tx) {
781 int ret;
782 /* TODO: schedule p2p_run_after_scan to be called from TX
783 * status callback(?) */
784 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
785 "Action frame at p2p_scan completion");
786 ret = p2p->cfg->send_action(p2p->cfg->cb_ctx,
787 p2p->after_scan_tx->freq,
788 p2p->after_scan_tx->dst,
789 p2p->after_scan_tx->src,
790 p2p->after_scan_tx->bssid,
791 (u8 *) (p2p->after_scan_tx + 1),
792 p2p->after_scan_tx->len,
793 p2p->after_scan_tx->wait_time);
794 os_free(p2p->after_scan_tx);
795 p2p->after_scan_tx = NULL;
796 return 1;
797 }
798
b22128ef
JM		 799 op = p2p->start_after_scan;
800 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
801 switch (op) {
802 case P2P_AFTER_SCAN_NOTHING:
803 break;
804 case P2P_AFTER_SCAN_LISTEN:
805 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
806 "requested Listen state");
807 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
808 p2p->pending_listen_usec / 1000);
809 return 1;
810 case P2P_AFTER_SCAN_CONNECT:
811 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
812 "requested connect with " MACSTR,
813 MAC2STR(p2p->after_scan_peer));
814 dev = p2p_get_device(p2p, p2p->after_scan_peer);
815 if (dev == NULL) {
816 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
817 "known anymore");
818 break;
819 }
820 p2p_connect_send(p2p, dev);
821 return 1;
822 }
823
824 return 0;
825}
826
827
b22128ef
JM		 828static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
829{
830 struct p2p_data *p2p = eloop_ctx;
831 int running;
832 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
833 "(running=%d)", p2p->p2p_scan_running);
834 running = p2p->p2p_scan_running;
835 /* Make sure we recover from missed scan results callback */
836 p2p->p2p_scan_running = 0;
837
838 if (running)
839 p2p_run_after_scan(p2p);
840}
841
842
046ef4aa
JMB		 843static void p2p_free_req_dev_types(struct p2p_data *p2p)
844{
845 p2p->num_req_dev_types = 0;
846 os_free(p2p->req_dev_types);
847 p2p->req_dev_types = NULL;
848}
849
850
b22128ef 851int p2p_find(struct p2p_data *p2p, unsigned int timeout,
046ef4aa
JMB		 852 enum p2p_discovery_type type,
853 unsigned int num_req_dev_types, const u8 *req_dev_types)
b22128ef
JM		 854{
855 int res;
856
857 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
858 type);
859 if (p2p->p2p_scan_running) {
860 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
861 "already running");
862 }
046ef4aa
JMB		 863
864 p2p_free_req_dev_types(p2p);
865 if (req_dev_types && num_req_dev_types) {
866 p2p->req_dev_types = os_malloc(num_req_dev_types *
867 WPS_DEV_TYPE_LEN);
868 if (p2p->req_dev_types == NULL)
869 return -1;
870 os_memcpy(p2p->req_dev_types, req_dev_types,
871 num_req_dev_types * WPS_DEV_TYPE_LEN);
872 p2p->num_req_dev_types = num_req_dev_types;
873 }
874
b22128ef
JM		 875 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
876 p2p_clear_timeout(p2p);
877 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
878 p2p->find_type = type;
879 p2p_device_clear_reported(p2p);
880 p2p_set_state(p2p, P2P_SEARCH);
881 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
882 if (timeout)
883 eloop_register_timeout(timeout, 0, p2p_find_timeout,
884 p2p, NULL);
885 switch (type) {
886 case P2P_FIND_START_WITH_FULL:
887 case P2P_FIND_PROGRESSIVE:
046ef4aa
JMB		 888 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
889 p2p->num_req_dev_types,
890 p2p->req_dev_types);
b22128ef
JM		 891 break;
892 case P2P_FIND_ONLY_SOCIAL:
046ef4aa
JMB		 893 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
894 p2p->num_req_dev_types,
895 p2p->req_dev_types);
b22128ef
JM		 896 break;
897 default:
898 return -1;
899 }
900
901 if (res == 0) {
902 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
903 p2p->p2p_scan_running = 1;
904 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
905 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
906 p2p, NULL);
907 } else {
908 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
909 "p2p_scan");
0c96fd6d
JM		 910 p2p_set_state(p2p, P2P_IDLE);
911 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
b22128ef
JM		 912 }
913
914 return res;
915}
916
917
0b8889d8 918void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
b22128ef
JM		 919{
920 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
921 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
922 p2p_clear_timeout(p2p);
923 p2p_set_state(p2p, P2P_IDLE);
046ef4aa 924 p2p_free_req_dev_types(p2p);
b22128ef
JM		 925 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
926 p2p->go_neg_peer = NULL;
927 p2p->sd_peer = NULL;
928 p2p->invite_peer = NULL;
0b8889d8
JM		 929 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
930 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
931 "since we are on correct channel for response");
932 return;
933 }
54b8f994
JM		 934 if (p2p->drv_in_listen) {
935 /*
936 * The driver may not deliver callback to p2p_listen_end()
937 * when the operation gets canceled, so clear the internal
938 * variable that is tracking driver state.
939 */
940 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear "
941 "drv_in_listen (%d)", p2p->drv_in_listen);
942 p2p->drv_in_listen = 0;
943 }
b22128ef
JM		 944 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
945}
946
947
0b8889d8
JM		 948void p2p_stop_find(struct p2p_data *p2p)
949{
950 p2p_stop_find_for_freq(p2p, 0);
951}
952
953
7861cb08 954static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq)
b22128ef 955{
b22128ef 956 if (force_freq) {
1e19f734 957 u8 op_reg_class, op_channel;
b22128ef 958 if (p2p_freq_to_channel(p2p->cfg->country, force_freq,
1e19f734 959 &op_reg_class, &op_channel) < 0) {
b22128ef
JM		 960 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
961 "P2P: Unsupported frequency %u MHz",
962 force_freq);
963 return -1;
964 }
1e19f734
JM		 965 if (!p2p_channels_includes(&p2p->cfg->channels, op_reg_class,
966 op_channel)) {
967 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
968 "P2P: Frequency %u MHz (oper_class %u "
969 "channel %u) not allowed for P2P",
970 force_freq, op_reg_class, op_channel);
971 return -1;
972 }
973 p2p->op_reg_class = op_reg_class;
974 p2p->op_channel = op_channel;
b22128ef
JM		 975 p2p->channels.reg_classes = 1;
976 p2p->channels.reg_class[0].channels = 1;
977 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
978 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
979 } else {
7cfc4ac3
AGS		 980 u8 op_reg_class, op_channel;
981
982 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
983 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
984 p2p_freq_to_channel(p2p->cfg->country,
985 p2p->best_freq_overall,
986 &op_reg_class, &op_channel) == 0) {
987 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
988 "P2P: Select best overall channel as "
989 "operating channel preference");
990 p2p->op_reg_class = op_reg_class;
991 p2p->op_channel = op_channel;
992 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
993 p2p_supported_freq(p2p, p2p->best_freq_5) &&
994 p2p_freq_to_channel(p2p->cfg->country,
995 p2p->best_freq_5,
996 &op_reg_class, &op_channel) ==
997 0) {
998 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
999 "P2P: Select best 5 GHz channel as "
1000 "operating channel preference");
1001 p2p->op_reg_class = op_reg_class;
1002 p2p->op_channel = op_channel;
1003 } else if (!p2p->cfg->cfg_op_channel &&
1004 p2p->best_freq_24 > 0 &&
1005 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1006 p2p_freq_to_channel(p2p->cfg->country,
1007 p2p->best_freq_24,
1008 &op_reg_class, &op_channel) ==
1009 0) {
1010 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1011 "P2P: Select best 2.4 GHz channel as "
1012 "operating channel preference");
1013 p2p->op_reg_class = op_reg_class;
1014 p2p->op_channel = op_channel;
1015 } else {
1016 p2p->op_reg_class = p2p->cfg->op_reg_class;
1017 p2p->op_channel = p2p->cfg->op_channel;
1018 }
1019
b22128ef
JM		 1020 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1021 sizeof(struct p2p_channels));
1022 }
1023 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1024 "P2P: Own preference for operation channel: "
7cfc4ac3 1025 "Operating Class %u Channel %u%s",
b22128ef
JM		 1026 p2p->op_reg_class, p2p->op_channel,
1027 force_freq ? " (forced)" : "");
1028
7861cb08
JM		 1029 return 0;
1030}
1031
1032
1033int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1034 enum p2p_wps_method wps_method,
1035 int go_intent, const u8 *own_interface_addr,
1036 unsigned int force_freq, int persistent_group)
1037{
1038 struct p2p_device *dev;
1039
1040 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1041 "P2P: Request to start group negotiation - peer=" MACSTR
1042 " GO Intent=%d Intended Interface Address=" MACSTR
1043 " wps_method=%d persistent_group=%d",
1044 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1045 wps_method, persistent_group);
1046
1047 if (p2p_prepare_channel(p2p, force_freq) < 0)
1048 return -1;
1049
b22128ef
JM		 1050 dev = p2p_get_device(p2p, peer_addr);
1051 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1052 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1053 "P2P: Cannot connect to unknown P2P Device " MACSTR,
1054 MAC2STR(peer_addr));
1055 return -1;
1056 }
1057
1058 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
c5db8e51
KRK		 1059 if (!(dev->info.dev_capab &
1060 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
b22128ef
JM		 1061 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1062 "P2P: Cannot connect to P2P Device " MACSTR
1063 " that is in a group and is not discoverable",
1064 MAC2STR(peer_addr));
1065 return -1;
1066 }
1067 if (dev->oper_freq <= 0) {
1068 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1069 "P2P: Cannot connect to P2P Device " MACSTR
1070 " with incomplete information",
1071 MAC2STR(peer_addr));
1072 return -1;
1073 }
1074
1075 /*
1076 * First, try to connect directly. If the peer does not
1077 * acknowledge frames, assume it is sleeping and use device
1078 * discoverability via the GO at that point.
1079 */
1080 }
1081
1082 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1083 dev->flags &= ~P2P_DEV_USER_REJECTED;
1084 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1085 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
9dac8c3e 1086 dev->connect_reqs = 0;
b22128ef
JM		 1087 dev->go_neg_req_sent = 0;
1088 dev->go_state = UNKNOWN_GO;
1089 if (persistent_group)
1090 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1091 else
1092 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
1093 p2p->go_intent = go_intent;
1094 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1095
1096 if (p2p->state != P2P_IDLE)
1097 p2p_stop_find(p2p);
1098
f44ae207
JM		 1099 if (p2p->after_scan_tx) {
1100 /*
1101 * We need to drop the pending frame to avoid issues with the
1102 * new GO Negotiation, e.g., when the pending frame was from a
1103 * previous attempt at starting a GO Negotiation.
1104 */
1105 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
1106 "previous pending Action frame TX that was waiting "
1107 "for p2p_scan completion");
1108 os_free(p2p->after_scan_tx);
1109 p2p->after_scan_tx = NULL;
1110 }
1111
b22128ef
JM		 1112 dev->wps_method = wps_method;
1113 dev->status = P2P_SC_SUCCESS;
d5b20a73
JM		 1114
1115 if (force_freq)
1116 dev->flags |= P2P_DEV_FORCE_FREQ;
1117 else
1118 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1119
b22128ef
JM		 1120 if (p2p->p2p_scan_running) {
1121 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1122 "P2P: p2p_scan running - delay connect send");
1123 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1124 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1125 return 0;
1126 }
1127 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1128
1129 return p2p_connect_send(p2p, dev);
1130}
1131
1132
1133int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1134 enum p2p_wps_method wps_method,
1135 int go_intent, const u8 *own_interface_addr,
1136 unsigned int force_freq, int persistent_group)
1137{
1138 struct p2p_device *dev;
1139
1140 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1141 "P2P: Request to authorize group negotiation - peer=" MACSTR
1142 " GO Intent=%d Intended Interface Address=" MACSTR
1143 " wps_method=%d persistent_group=%d",
1144 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1145 wps_method, persistent_group);
1146
7861cb08
JM		 1147 if (p2p_prepare_channel(p2p, force_freq) < 0)
1148 return -1;
b22128ef
JM		 1149
1150 dev = p2p_get_device(p2p, peer_addr);
1151 if (dev == NULL) {
1152 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1153 "P2P: Cannot authorize unknown P2P Device " MACSTR,
1154 MAC2STR(peer_addr));
1155 return -1;
1156 }
1157
1158 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1159 dev->flags &= ~P2P_DEV_USER_REJECTED;
1160 dev->go_neg_req_sent = 0;
1161 dev->go_state = UNKNOWN_GO;
1162 if (persistent_group)
1163 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1164 else
1165 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
1166 p2p->go_intent = go_intent;
1167 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1168
1169 dev->wps_method = wps_method;
1170 dev->status = P2P_SC_SUCCESS;
1171
d5b20a73
JM		 1172 if (force_freq)
1173 dev->flags |= P2P_DEV_FORCE_FREQ;
1174 else
1175 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1176
b22128ef
JM		 1177 return 0;
1178}
1179
1180
1181void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1182 struct p2p_device *dev, struct p2p_message *msg)
1183{
1184 os_get_time(&dev->last_seen);
1185
b67d0d9e 1186 p2p_copy_wps_info(dev, 0, msg);
e57ae6e1 1187
b22128ef
JM		 1188 if (msg->listen_channel) {
1189 int freq;
1190 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1191 msg->listen_channel[3],
1192 msg->listen_channel[4]);
1193 if (freq < 0) {
1194 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1195 "P2P: Unknown peer Listen channel: "
1196 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1197 msg->listen_channel[0],
1198 msg->listen_channel[1],
1199 msg->listen_channel[2],
1200 msg->listen_channel[3],
1201 msg->listen_channel[4]);
1202 } else {
1203 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1204 "peer " MACSTR " Listen channel: %u -> %u MHz",
c5db8e51 1205 MAC2STR(dev->info.p2p_device_addr),
b22128ef
JM		 1206 dev->listen_freq, freq);
1207 dev->listen_freq = freq;
1208 }
1209 }
b22128ef
JM		 1210
1211 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1212 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1213 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1214 "P2P: Completed device entry based on data from "
1215 "GO Negotiation Request");
1216 } else {
1217 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1218 "P2P: Created device entry based on GO Neg Req: "
1219 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1220 "listen_freq=%d",
c5db8e51
KRK		 1221 MAC2STR(dev->info.p2p_device_addr),
1222 dev->info.dev_capab, dev->info.group_capab,
1223 dev->info.device_name, dev->listen_freq);
b22128ef
JM		 1224 }
1225
1226 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1227
1228 if (dev->flags & P2P_DEV_USER_REJECTED) {
1229 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1230 "P2P: Do not report rejected device");
1231 return;
1232 }
1233
8fd7dc1b
JB		 1234 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1235 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1236 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 1237}
1238
1239
1240void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1241{
1242 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1243 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1244 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1245 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1246 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1247}
1248
1249
1250int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1251{
1252 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1253 p2p_random(params->passphrase, 8);
1254 return 0;
1255}
1256
1257
1258void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1259{
1260 struct p2p_go_neg_results res;
1261 int go = peer->go_state == LOCAL_GO;
1262 struct p2p_channels intersection;
1263 int freqs;
1264 size_t i, j;
1265
1266 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1267 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
c5db8e51 1268 "GO)", MAC2STR(peer->info.p2p_device_addr),
b22128ef
JM		 1269 go ? "local end" : "peer");
1270
1271 os_memset(&res, 0, sizeof(res));
1272 res.role_go = go;
c5db8e51 1273 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
b22128ef
JM		 1274 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1275 res.wps_method = peer->wps_method;
1276 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP)
1277 res.persistent_group = 1;
1278
1279 if (go) {
1280 /* Setup AP mode for WPS provisioning */
1281 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1282 p2p->op_reg_class,
1283 p2p->op_channel);
1284 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1285 res.ssid_len = p2p->ssid_len;
1286 p2p_random(res.passphrase, 8);
e9a7ae41 1287 } else {
b22128ef 1288 res.freq = peer->oper_freq;
e9a7ae41
JM		 1289 if (p2p->ssid_len) {
1290 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1291 res.ssid_len = p2p->ssid_len;
1292 }
1293 }
b22128ef
JM		 1294
1295 p2p_channels_intersect(&p2p->channels, &peer->channels,
1296 &intersection);
1297 freqs = 0;
1298 for (i = 0; i < intersection.reg_classes; i++) {
1299 struct p2p_reg_class *c = &intersection.reg_class[i];
1300 if (freqs + 1 == P2P_MAX_CHANNELS)
1301 break;
1302 for (j = 0; j < c->channels; j++) {
1303 int freq;
1304 if (freqs + 1 == P2P_MAX_CHANNELS)
1305 break;
1306 freq = p2p_channel_to_freq(peer->country, c->reg_class,
1307 c->channel[j]);
1308 if (freq < 0)
1309 continue;
1310 res.freq_list[freqs++] = freq;
1311 }
1312 }
1313
ae3e3421
JM		 1314 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1315
b22128ef
JM		 1316 p2p_clear_timeout(p2p);
1317 peer->go_neg_req_sent = 0;
1318 peer->wps_method = WPS_NOT_READY;
1319
1320 p2p_set_state(p2p, P2P_PROVISIONING);
1321 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1322}
1323
1324
1325static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1326 const u8 *data, size_t len, int rx_freq)
1327{
1328 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1329 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1330 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1331
1332 if (len < 1)
1333 return;
1334
1335 switch (data[0]) {
1336 case P2P_GO_NEG_REQ:
1337 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1338 break;
1339 case P2P_GO_NEG_RESP:
1340 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1341 break;
1342 case P2P_GO_NEG_CONF:
1343 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1344 break;
1345 case P2P_INVITATION_REQ:
1346 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1347 rx_freq);
1348 break;
1349 case P2P_INVITATION_RESP:
1350 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1351 break;
1352 case P2P_PROV_DISC_REQ:
1353 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1354 break;
1355 case P2P_PROV_DISC_RESP:
1356 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1357 break;
1358 case P2P_DEV_DISC_REQ:
1359 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1360 break;
1361 case P2P_DEV_DISC_RESP:
1362 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1363 break;
1364 default:
1365 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1366 "P2P: Unsupported P2P Public Action frame type %d",
1367 data[0]);
1368 break;
1369 }
1370}
1371
1372
1373void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1374 const u8 *bssid, const u8 *data, size_t len,
1375 int freq)
1376{
1377 if (len < 1)
1378 return;
1379
1380 switch (data[0]) {
1381 case WLAN_PA_VENDOR_SPECIFIC:
1382 data++;
1383 len--;
1384 if (len < 3)
1385 return;
1386 if (WPA_GET_BE24(data) != OUI_WFA)
1387 return;
1388
1389 data += 3;
1390 len -= 3;
1391 if (len < 1)
1392 return;
1393
1394 if (*data != P2P_OUI_TYPE)
1395 return;
1396
1397 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1398 break;
1399 case WLAN_PA_GAS_INITIAL_REQ:
1400 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1401 break;
1402 case WLAN_PA_GAS_INITIAL_RESP:
18708aad
JM		 1403 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1404 break;
1405 case WLAN_PA_GAS_COMEBACK_REQ:
1406 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1407 break;
1408 case WLAN_PA_GAS_COMEBACK_RESP:
1409 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
b22128ef
JM		 1410 break;
1411 }
1412}
1413
1414
1415void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1416 const u8 *bssid, u8 category,
1417 const u8 *data, size_t len, int freq)
1418{
1419 if (category == WLAN_ACTION_PUBLIC) {
1420 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1421 return;
1422 }
1423
1424 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1425 return;
1426
1427 if (len < 4)
1428 return;
1429
1430 if (WPA_GET_BE24(data) != OUI_WFA)
1431 return;
1432 data += 3;
1433 len -= 3;
1434
1435 if (*data != P2P_OUI_TYPE)
1436 return;
1437 data++;
1438 len--;
1439
1440 /* P2P action frame */
1441 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1442 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1443 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1444
1445 if (len < 1)
1446 return;
1447 switch (data[0]) {
1448 case P2P_NOA:
1449 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1450 "P2P: Received P2P Action - Notice of Absence");
1451 /* TODO */
1452 break;
1453 case P2P_PRESENCE_REQ:
1454 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1455 break;
1456 case P2P_PRESENCE_RESP:
1457 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1458 break;
1459 case P2P_GO_DISC_REQ:
1460 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1461 break;
1462 default:
1463 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1464 "P2P: Received P2P Action - unknown type %u", data[0]);
1465 break;
1466 }
1467}
1468
1469
1470static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1471{
1472 struct p2p_data *p2p = eloop_ctx;
1473 if (p2p->go_neg_peer == NULL)
1474 return;
1475 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1476 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1477 p2p_connect_send(p2p, p2p->go_neg_peer);
1478}
1479
1480
1481static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1482{
1483 struct p2p_data *p2p = eloop_ctx;
1484 if (p2p->invite_peer == NULL)
1485 return;
1486 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1487 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1488}
1489
1490
1491static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1492 const u8 *ie, size_t ie_len)
1493{
1494 struct p2p_message msg;
1495 struct p2p_device *dev;
1496
1497 os_memset(&msg, 0, sizeof(msg));
1498 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1499 {
1500 p2p_parse_free(&msg);
1501 return; /* not a P2P probe */
1502 }
1503
1504 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1505 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1506 != 0) {
1507 /* The Probe Request is not part of P2P Device Discovery. It is
1508 * not known whether the source address of the frame is the P2P
1509 * Device Address or P2P Interface Address. Do not add a new
1510 * peer entry based on this frames.
1511 */
1512 p2p_parse_free(&msg);
1513 return;
1514 }
1515
1516 dev = p2p_get_device(p2p, addr);
1517 if (dev) {
1518 if (dev->country[0] == 0 && msg.listen_channel)
1519 os_memcpy(dev->country, msg.listen_channel, 3);
ed908a55 1520 os_get_time(&dev->last_seen);
b22128ef
JM		 1521 p2p_parse_free(&msg);
1522 return; /* already known */
1523 }
1524
1525 dev = p2p_create_device(p2p, addr);
1526 if (dev == NULL) {
1527 p2p_parse_free(&msg);
1528 return;
1529 }
1530
1531 os_get_time(&dev->last_seen);
1532 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1533
b22128ef
JM		 1534 if (msg.listen_channel) {
1535 os_memcpy(dev->country, msg.listen_channel, 3);
1536 dev->listen_freq = p2p_channel_to_freq(dev->country,
1537 msg.listen_channel[3],
1538 msg.listen_channel[4]);
1539 }
1540
b67d0d9e 1541 p2p_copy_wps_info(dev, 1, &msg);
e57ae6e1 1542
b22128ef
JM		 1543 p2p_parse_free(&msg);
1544
1545 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1546 "P2P: Created device entry based on Probe Req: " MACSTR
1547 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
c5db8e51
KRK		 1548 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1549 dev->info.group_capab, dev->info.device_name,
1550 dev->listen_freq);
b22128ef
JM		 1551}
1552
1553
1554struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1555 const u8 *addr,
1556 struct p2p_message *msg)
1557{
1558 struct p2p_device *dev;
1559
1560 dev = p2p_get_device(p2p, addr);
1561 if (dev) {
1562 os_get_time(&dev->last_seen);
1563 return dev; /* already known */
1564 }
1565
1566 dev = p2p_create_device(p2p, addr);
1567 if (dev == NULL)
1568 return NULL;
1569
1570 p2p_add_dev_info(p2p, addr, dev, msg);
1571
1572 return dev;
1573}
1574
1575
1576static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1577{
1578 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1579 return 1;
1580 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1581 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1582 WPA_GET_BE16(&req_dev_type[6]) == 0)
1583 return 1; /* Category match with wildcard OUI/sub-category */
1584 return 0;
1585}
1586
1587
1588int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1589 size_t num_req_dev_type)
1590{
1591 size_t i;
1592 for (i = 0; i < num_req_dev_type; i++) {
1593 if (dev_type_match(dev_type, req_dev_type[i]))
1594 return 1;
1595 }
1596 return 0;
1597}
1598
1599
1600/**
1601 * p2p_match_dev_type - Match local device type with requested type
1602 * @p2p: P2P module context from p2p_init()
1603 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1604 * Returns: 1 on match, 0 on mismatch
1605 *
1606 * This function can be used to match the Requested Device Type attribute in
1607 * WPS IE with the local device types for deciding whether to reply to a Probe
1608 * Request frame.
1609 */
1610int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1611{
1612 struct wps_parse_attr attr;
1613 size_t i;
1614
1615 if (wps_parse_msg(wps, &attr))
1616 return 1; /* assume no Requested Device Type attributes */
1617
1618 if (attr.num_req_dev_type == 0)
1619 return 1; /* no Requested Device Type attributes -> match */
1620
1621 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1622 attr.num_req_dev_type))
1623 return 1; /* Own Primary Device Type matches */
1624
1625 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1626 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1627 attr.req_dev_type,
1628 attr.num_req_dev_type))
1629 return 1; /* Own Secondary Device Type matches */
1630
1631 /* No matching device type found */
1632 return 0;
1633}
1634
1635
1636struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1637{
1638 struct wpabuf *buf;
1639 u8 *len;
1640
1641 buf = wpabuf_alloc(1000);
1642 if (buf == NULL)
1643 return NULL;
1644
b22128ef
JM		 1645 p2p_build_wps_ie(p2p, buf, DEV_PW_DEFAULT, 1);
1646
1647 /* P2P IE */
1648 len = p2p_buf_add_ie_hdr(buf);
1649 p2p_buf_add_capability(buf, p2p->dev_capab, 0);
1650 if (p2p->ext_listen_interval)
1651 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1652 p2p->ext_listen_interval);
1653 p2p_buf_add_device_info(buf, p2p, NULL);
1654 p2p_buf_update_ie_hdr(buf, len);
1655
1656 return buf;
1657}
1658
1659
e1d52629
JM		 1660static int is_11b(u8 rate)
1661{
1662 return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16;
1663}
1664
1665
1666static int supp_rates_11b_only(struct ieee802_11_elems *elems)
1667{
1668 int num_11b = 0, num_others = 0;
1669 int i;
1670
1671 if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL)
1672 return 0;
1673
1674 for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) {
1675 if (is_11b(elems->supp_rates[i]))
1676 num_11b++;
1677 else
1678 num_others++;
1679 }
1680
70dbe3b6
JM		 1681 for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len;
1682 i++) {
1683 if (is_11b(elems->ext_supp_rates[i]))
1684 num_11b++;
1685 else
1686 num_others++;
1687 }
1688
e1d52629
JM		 1689 return num_11b > 0 && num_others == 0;
1690}
1691
1692
04a85e44
JM		 1693static void p2p_reply_probe(struct p2p_data *p2p, const u8 *addr,
1694 const u8 *dst, const u8 *bssid, const u8 *ie,
b22128ef
JM		 1695 size_t ie_len)
1696{
1697 struct ieee802_11_elems elems;
1698 struct wpabuf *buf;
1699 struct ieee80211_mgmt *resp;
97c5b3c4 1700 struct p2p_message msg;
b22128ef
JM		 1701 struct wpabuf *ies;
1702
1703 if (!p2p->in_listen || !p2p->drv_in_listen) {
1704 /* not in Listen state - ignore Probe Request */
1705 return;
1706 }
1707
1708 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1709 ParseFailed) {
1710 /* Ignore invalid Probe Request frames */
1711 return;
1712 }
1713
1714 if (elems.p2p == NULL) {
1715 /* not a P2P probe - ignore it */
1716 return;
1717 }
1718
04a85e44
JM		 1719 if (dst && !is_broadcast_ether_addr(dst) &&
1720 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1721 /* Not sent to the broadcast address or our P2P Device Address
1722 */
1723 return;
1724 }
1725
1726 if (bssid && !is_broadcast_ether_addr(bssid)) {
1727 /* Not sent to the Wildcard BSSID */
1728 return;
1729 }
1730
b22128ef
JM		 1731 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1732 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1733 0) {
1734 /* not using P2P Wildcard SSID - ignore */
1735 return;
1736 }
1737
e1d52629
JM		 1738 if (supp_rates_11b_only(&elems)) {
1739 /* Indicates support for 11b rates only */
1740 return;
1741 }
1742
97c5b3c4
JM		 1743 os_memset(&msg, 0, sizeof(msg));
1744 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
1745 /* Could not parse P2P attributes */
1746 return;
1747 }
1748
1749 if (msg.device_id &&
1750 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN != 0)) {
1751 /* Device ID did not match */
1752 p2p_parse_free(&msg);
1753 return;
1754 }
1755
b22128ef 1756 /* Check Requested Device Type match */
97c5b3c4
JM		 1757 if (msg.wps_attributes &&
1758 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
b22128ef 1759 /* No match with Requested Device Type */
97c5b3c4 1760 p2p_parse_free(&msg);
b22128ef
JM		 1761 return;
1762 }
97c5b3c4 1763 p2p_parse_free(&msg);
b22128ef
JM		 1764
1765 if (!p2p->cfg->send_probe_resp)
1766 return; /* Response generated elsewhere */
1767
1768 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1769 "P2P: Reply to P2P Probe Request in Listen state");
1770
1771 /*
1772 * We do not really have a specific BSS that this frame is advertising,
1773 * so build a frame that has some information in valid format. This is
1774 * really only used for discovery purposes, not to learn exact BSS
1775 * parameters.
1776 */
1777 ies = p2p_build_probe_resp_ies(p2p);
1778 if (ies == NULL)
1779 return;
1780
1781 buf = wpabuf_alloc(200 + wpabuf_len(ies));
1782 if (buf == NULL) {
1783 wpabuf_free(ies);
1784 return;
1785 }
1786
1787 resp = NULL;
1788 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
1789
1790 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
1791 (WLAN_FC_STYPE_PROBE_RESP << 4));
1792 os_memcpy(resp->da, addr, ETH_ALEN);
1793 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
1794 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
1795 resp->u.probe_resp.beacon_int = host_to_le16(100);
1796 /* hardware or low-level driver will setup seq_ctrl and timestamp */
1797 resp->u.probe_resp.capab_info =
1798 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
1799 WLAN_CAPABILITY_PRIVACY |
1800 WLAN_CAPABILITY_SHORT_SLOT_TIME);
1801
1802 wpabuf_put_u8(buf, WLAN_EID_SSID);
1803 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
1804 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1805
1806 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
1807 wpabuf_put_u8(buf, 8);
1808 wpabuf_put_u8(buf, (60 / 5) | 0x80);
1809 wpabuf_put_u8(buf, 90 / 5);
1810 wpabuf_put_u8(buf, (120 / 5) | 0x80);
1811 wpabuf_put_u8(buf, 180 / 5);
1812 wpabuf_put_u8(buf, (240 / 5) | 0x80);
1813 wpabuf_put_u8(buf, 360 / 5);
1814 wpabuf_put_u8(buf, 480 / 5);
1815 wpabuf_put_u8(buf, 540 / 5);
1816
1817 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
1818 wpabuf_put_u8(buf, 1);
1819 wpabuf_put_u8(buf, p2p->cfg->channel);
1820
1821 wpabuf_put_buf(buf, ies);
1822 wpabuf_free(ies);
1823
1824 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
1825
1826 wpabuf_free(buf);
1827}
1828
1829
04a85e44
JM		 1830int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1831 const u8 *bssid, const u8 *ie, size_t ie_len)
b22128ef
JM		 1832{
1833 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
1834
04a85e44 1835 p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
b22128ef
JM		 1836
1837 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
1838 p2p->go_neg_peer &&
c5db8e51
KRK		 1839 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
1840 == 0) {
b22128ef
JM		 1841 /* Received a Probe Request from GO Negotiation peer */
1842 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1843 "P2P: Found GO Negotiation peer - try to start GO "
1844 "negotiation from timeout");
1845 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
1846 return 1;
1847 }
1848
1849 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
1850 p2p->invite_peer &&
c5db8e51
KRK		 1851 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
1852 == 0) {
b22128ef
JM		 1853 /* Received a Probe Request from Invite peer */
1854 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1855 "P2P: Found Invite peer - try to start Invite from "
1856 "timeout");
1857 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
1858 return 1;
1859 }
1860
1861 return 0;
1862}
1863
1864
1865static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
4c08c0bd 1866 u8 *buf, size_t len, struct wpabuf *p2p_ie)
b22128ef
JM		 1867{
1868 struct wpabuf *tmp;
1869 u8 *lpos;
1870 size_t tmplen;
1871 int res;
72044390 1872 u8 group_capab;
b22128ef 1873
4c08c0bd
JM		 1874 if (p2p_ie == NULL)
1875 return 0; /* WLAN AP is not a P2P manager */
b22128ef
JM		 1876
1877 /*
1878 * (Re)Association Request - P2P IE
1879 * P2P Capability attribute (shall be present)
4c08c0bd
JM		 1880 * P2P Interface attribute (present if concurrent device and
1881 * P2P Management is enabled)
b22128ef
JM		 1882 */
1883 tmp = wpabuf_alloc(200);
1884 if (tmp == NULL)
1885 return -1;
1886
1887 lpos = p2p_buf_add_ie_hdr(tmp);
72044390
JM		 1888 group_capab = 0;
1889 if (p2p->num_groups > 0) {
1890 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
1891 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1892 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
1893 p2p->cross_connect)
1894 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
1895 }
1896 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
4c08c0bd
JM		 1897 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1898 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
b22128ef
JM		 1899 p2p_buf_add_p2p_interface(tmp, p2p);
1900 p2p_buf_update_ie_hdr(tmp, lpos);
1901
1902 tmplen = wpabuf_len(tmp);
1903 if (tmplen > len)
1904 res = -1;
1905 else {
1906 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1907 res = tmplen;
1908 }
1909 wpabuf_free(tmp);
1910
1911 return res;
1912}
1913
1914
1915int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
4c08c0bd 1916 size_t len, int p2p_group, struct wpabuf *p2p_ie)
b22128ef
JM		 1917{
1918 struct wpabuf *tmp;
1919 u8 *lpos;
1920 struct p2p_device *peer;
1921 size_t tmplen;
1922 int res;
1923
1924 if (!p2p_group)
4c08c0bd 1925 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
b22128ef
JM		 1926
1927 /*
1928 * (Re)Association Request - P2P IE
1929 * P2P Capability attribute (shall be present)
1930 * Extended Listen Timing (may be present)
1931 * P2P Device Info attribute (shall be present)
1932 */
1933 tmp = wpabuf_alloc(200);
1934 if (tmp == NULL)
1935 return -1;
1936
1937 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
1938
1939 lpos = p2p_buf_add_ie_hdr(tmp);
1940 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
5be5305b
JM		 1941 if (p2p->ext_listen_interval)
1942 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
1943 p2p->ext_listen_interval);
b22128ef
JM		 1944 p2p_buf_add_device_info(tmp, p2p, peer);
1945 p2p_buf_update_ie_hdr(tmp, lpos);
1946
1947 tmplen = wpabuf_len(tmp);
1948 if (tmplen > len)
1949 res = -1;
1950 else {
1951 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1952 res = tmplen;
1953 }
1954 wpabuf_free(tmp);
1955
1956 return res;
1957}
1958
1959
1960int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
1961{
1962 struct wpabuf *p2p_ie;
1963 int ret;
1964
1965 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
1966 if (p2p_ie == NULL)
1967 return 0;
1968
1969 ret = p2p_attr_text(p2p_ie, buf, end);
1970 wpabuf_free(p2p_ie);
1971 return ret;
1972}
1973
1974
1975static void p2p_clear_go_neg(struct p2p_data *p2p)
1976{
1977 p2p->go_neg_peer = NULL;
1978 p2p_clear_timeout(p2p);
1979 p2p_set_state(p2p, P2P_IDLE);
1980}
1981
1982
1983void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
1984{
1985 if (p2p->go_neg_peer == NULL) {
1986 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1987 "P2P: No pending Group Formation - "
1988 "ignore WPS registration success notification");
1989 return; /* No pending Group Formation */
1990 }
1991
1992 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
1993 0) {
1994 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1995 "P2P: Ignore WPS registration success notification "
1996 "for " MACSTR " (GO Negotiation peer " MACSTR ")",
1997 MAC2STR(mac_addr),
1998 MAC2STR(p2p->go_neg_peer->intended_addr));
1999 return; /* Ignore unexpected peer address */
2000 }
2001
2002 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2003 "P2P: Group Formation completed successfully with " MACSTR,
2004 MAC2STR(mac_addr));
2005
2006 p2p_clear_go_neg(p2p);
2007}
2008
2009
2010void p2p_group_formation_failed(struct p2p_data *p2p)
2011{
2012 if (p2p->go_neg_peer == NULL) {
2013 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2014 "P2P: No pending Group Formation - "
2015 "ignore group formation failure notification");
2016 return; /* No pending Group Formation */
2017 }
2018
2019 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2020 "P2P: Group Formation failed with " MACSTR,
2021 MAC2STR(p2p->go_neg_peer->intended_addr));
2022
2023 p2p_clear_go_neg(p2p);
2024}
2025
2026
2027struct p2p_data * p2p_init(const struct p2p_config *cfg)
2028{
2029 struct p2p_data *p2p;
2030
2031 if (cfg->max_peers < 1)
2032 return NULL;
2033
2034 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2035 if (p2p == NULL)
2036 return NULL;
2037 p2p->cfg = (struct p2p_config *) (p2p + 1);
2038 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2039 if (cfg->dev_name)
2040 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
b6e01800
JM		 2041 if (cfg->manufacturer)
2042 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2043 if (cfg->model_name)
2044 p2p->cfg->model_name = os_strdup(cfg->model_name);
2045 if (cfg->model_number)
2046 p2p->cfg->model_number = os_strdup(cfg->model_number);
2047 if (cfg->serial_number)
2048 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
b22128ef
JM		 2049
2050 p2p->min_disc_int = 1;
2051 p2p->max_disc_int = 3;
2052
2053 os_get_random(&p2p->next_tie_breaker, 1);
2054 p2p->next_tie_breaker &= 0x01;
2055 if (cfg->sd_request)
2056 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2057 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2058 if (cfg->concurrent_operations)
2059 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2060 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2061
2062 dl_list_init(&p2p->devices);
2063
2064 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2065 p2p_expiration_timeout, p2p, NULL);
2066
2067 return p2p;
2068}
2069
2070
2071void p2p_deinit(struct p2p_data *p2p)
2072{
2073 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2074 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2075 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2076 p2p_flush(p2p);
046ef4aa 2077 p2p_free_req_dev_types(p2p);
b22128ef 2078 os_free(p2p->cfg->dev_name);
b6e01800
JM		 2079 os_free(p2p->cfg->manufacturer);
2080 os_free(p2p->cfg->model_name);
2081 os_free(p2p->cfg->model_number);
2082 os_free(p2p->cfg->serial_number);
b22128ef 2083 os_free(p2p->groups);
18708aad 2084 wpabuf_free(p2p->sd_resp);
3f9285ff 2085 os_free(p2p->after_scan_tx);
f95cac27 2086 p2p_remove_wps_vendor_extensions(p2p);
b22128ef
JM		 2087 os_free(p2p);
2088}
2089
2090
2091void p2p_flush(struct p2p_data *p2p)
2092{
2093 struct p2p_device *dev, *prev;
2094 p2p_clear_timeout(p2p);
2095 p2p_set_state(p2p, P2P_IDLE);
2096 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
2097 p2p->go_neg_peer = NULL;
2098 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
2099 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2100 list) {
2101 dl_list_del(&dev->list);
2102 p2p_device_free(p2p, dev);
2103 }
2104 p2p_free_sd_queries(p2p);
f44ae207
JM		 2105 os_free(p2p->after_scan_tx);
2106 p2p->after_scan_tx = NULL;
b22128ef
JM		 2107}
2108
2109
9d562b79
SS		 2110int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2111{
2112 struct p2p_device *dev;
2113
2114 dev = p2p_get_device(p2p, addr);
2115 if (dev == NULL)
2116 return -1;
2117
2118 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
2119 MAC2STR(addr));
2120
2121 if (p2p->go_neg_peer == dev)
2122 p2p->go_neg_peer = NULL;
2123
2124 dev->wps_method = WPS_NOT_READY;
2125 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2126 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2127
2128 /* Check if after_scan_tx is for this peer. If so free it */
2129 if (p2p->after_scan_tx &&
2130 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2131 os_free(p2p->after_scan_tx);
2132 p2p->after_scan_tx = NULL;
2133 }
2134
2135 return 0;
2136}
2137
2138
b22128ef
JM		 2139int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2140{
2141 os_free(p2p->cfg->dev_name);
2142 if (dev_name) {
2143 p2p->cfg->dev_name = os_strdup(dev_name);
2144 if (p2p->cfg->dev_name == NULL)
2145 return -1;
2146 } else
2147 p2p->cfg->dev_name = NULL;
2148 return 0;
2149}
2150
2151
b6e01800
JM		 2152int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2153{
2154 os_free(p2p->cfg->manufacturer);
2155 p2p->cfg->manufacturer = NULL;
2156 if (manufacturer) {
2157 p2p->cfg->manufacturer = os_strdup(manufacturer);
2158 if (p2p->cfg->manufacturer == NULL)
2159 return -1;
2160 }
2161
2162 return 0;
2163}
2164
2165
2166int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2167{
2168 os_free(p2p->cfg->model_name);
2169 p2p->cfg->model_name = NULL;
2170 if (model_name) {
2171 p2p->cfg->model_name = os_strdup(model_name);
2172 if (p2p->cfg->model_name == NULL)
2173 return -1;
2174 }
2175
2176 return 0;
2177}
2178
2179
2180int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2181{
2182 os_free(p2p->cfg->model_number);
2183 p2p->cfg->model_number = NULL;
2184 if (model_number) {
2185 p2p->cfg->model_number = os_strdup(model_number);
2186 if (p2p->cfg->model_number == NULL)
2187 return -1;
2188 }
2189
2190 return 0;
2191}
2192
2193
2194int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2195{
2196 os_free(p2p->cfg->serial_number);
2197 p2p->cfg->serial_number = NULL;
2198 if (serial_number) {
2199 p2p->cfg->serial_number = os_strdup(serial_number);
2200 if (p2p->cfg->serial_number == NULL)
2201 return -1;
2202 }
2203
2204 return 0;
2205}
2206
2207
2208void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2209{
2210 p2p->cfg->config_methods = config_methods;
2211}
2212
2213
2214void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2215{
2216 os_memcpy(p2p->cfg->uuid, uuid, 16);
2217}
2218
2219
b22128ef
JM		 2220int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2221{
2222 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2223 return 0;
2224}
2225
2226
2227int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2228 size_t num_dev_types)
2229{
2230 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2231 num_dev_types = P2P_SEC_DEVICE_TYPES;
2232 p2p->cfg->num_sec_dev_types = num_dev_types;
2233 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2234 return 0;
2235}
2236
2237
f95cac27
JMB		 2238void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2239{
2240 int i;
2241
10c5d2a5 2242 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
f95cac27
JMB		 2243 wpabuf_free(p2p->wps_vendor_ext[i]);
2244 p2p->wps_vendor_ext[i] = NULL;
2245 }
2246}
2247
2248
2249int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2250 const struct wpabuf *vendor_ext)
2251{
2252 int i;
2253
2254 if (vendor_ext == NULL)
2255 return -1;
2256
10c5d2a5 2257 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
f95cac27
JMB		 2258 if (p2p->wps_vendor_ext[i] == NULL)
2259 break;
2260 }
10c5d2a5 2261 if (i >= P2P_MAX_WPS_VENDOR_EXT)
f95cac27
JMB		 2262 return -1;
2263
2264 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2265 if (p2p->wps_vendor_ext[i] == NULL)
2266 return -1;
2267
2268 return 0;
2269}
2270
2271
b22128ef
JM		 2272int p2p_set_country(struct p2p_data *p2p, const char *country)
2273{
2274 os_memcpy(p2p->cfg->country, country, 3);
2275 return 0;
2276}
2277
2278
2279void p2p_continue_find(struct p2p_data *p2p)
2280{
2281 struct p2p_device *dev;
2282 p2p_set_state(p2p, P2P_SEARCH);
2283 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2284 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2285 if (p2p_start_sd(p2p, dev) == 0)
2286 return;
2287 else
2288 break;
10c4edde
JM		 2289 } else if (dev->req_config_methods &&
2290 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2291 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2292 "pending Provisioning Discovery Request to "
2293 MACSTR " (config methods 0x%x)",
c5db8e51 2294 MAC2STR(dev->info.p2p_device_addr),
10c4edde 2295 dev->req_config_methods);
b22128ef
JM		 2296 if (p2p_send_prov_disc_req(p2p, dev, 0) == 0)
2297 return;
2298 }
2299 }
2300
2301 p2p_listen_in_find(p2p);
2302}
2303
2304
2305static void p2p_sd_cb(struct p2p_data *p2p, int success)
2306{
2307 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2308 "P2P: Service Discovery Query TX callback: success=%d",
2309 success);
2310 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2311
2312 if (!success) {
2313 if (p2p->sd_peer) {
2314 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2315 p2p->sd_peer = NULL;
2316 }
2317 p2p_continue_find(p2p);
2318 return;
2319 }
2320
2321 if (p2p->sd_peer == NULL) {
2322 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2323 "P2P: No SD peer entry known");
2324 p2p_continue_find(p2p);
2325 return;
2326 }
2327
2328 /* Wait for response from the peer */
2329 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2330 p2p_set_timeout(p2p, 0, 200000);
2331}
2332
6b56cc2d
JS		 2333
2334/**
2335 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2336 * @p2p: P2P module context from p2p_init()
2337 */
2338void p2p_retry_pd(struct p2p_data *p2p)
2339{
2340 struct p2p_device *dev;
2341
2342 if (p2p->state != P2P_IDLE)
2343 return;
2344
2345 /*
2346 * Retry the prov disc req attempt only for the peer that the user had
2347 * requested for and provided a join has not been initiated on it
2348 * in the meantime.
2349 */
2350
2351 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2352 if (os_memcmp(p2p->pending_pd_devaddr,
2353 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2354 continue;
2355 if (!dev->req_config_methods)
2356 continue;
2357 if (dev->flags & P2P_DEV_PD_FOR_JOIN)
2358 continue;
2359
2360 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2361 "pending Provisioning Discovery Request to "
2362 MACSTR " (config methods 0x%x)",
2363 MAC2STR(dev->info.p2p_device_addr),
2364 dev->req_config_methods);
2365 p2p_send_prov_disc_req(p2p, dev, 0);
2366 return;
2367 }
2368}
2369
2370
b22128ef
JM		 2371static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2372{
2373 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2374 "P2P: Provision Discovery Request TX callback: success=%d",
2375 success);
6b56cc2d
JS		 2376
2377 /*
2378 * Postpone resetting the pending action state till after we actually
2379 * time out. This allows us to take some action like notifying any
2380 * interested parties about no response to the request.
2381 *
2382 * When the timer (below) goes off we check in IDLE, SEARCH, or
2383 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2384 * requests in, if this was still pending and then raise notification.
2385 */
b22128ef
JM		 2386
2387 if (!success) {
6b56cc2d
JS		 2388 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2389
b22128ef
JM		 2390 if (p2p->state != P2P_IDLE)
2391 p2p_continue_find(p2p);
6b56cc2d
JS		 2392 else if (p2p->user_initiated_pd) {
2393 p2p->pending_action_state = P2P_PENDING_PD;
2394 p2p_set_timeout(p2p, 0, 300000);
2395 }
b22128ef
JM		 2396 return;
2397 }
2398
6b56cc2d
JS		 2399 /*
2400 * This postponing, of resetting pending_action_state, needs to be
2401 * done only for user initiated PD requests and not internal ones.
2402 */
2403 if (p2p->user_initiated_pd)
2404 p2p->pending_action_state = P2P_PENDING_PD;
2405 else
2406 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2407
b22128ef
JM		 2408 /* Wait for response from the peer */
2409 if (p2p->state == P2P_SEARCH)
2410 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2411 p2p_set_timeout(p2p, 0, 200000);
2412}
2413
2414
2415int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2416 int level, const u8 *ies, size_t ies_len)
2417{
2418 p2p_add_device(p2p, bssid, freq, level, ies, ies_len);
2419
2420 if (p2p->go_neg_peer && p2p->state == P2P_SEARCH &&
c5db8e51
KRK		 2421 os_memcmp(p2p->go_neg_peer->info.p2p_device_addr, bssid, ETH_ALEN)
2422 == 0) {
b22128ef
JM		 2423 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2424 "P2P: Found GO Negotiation peer - try to start GO "
2425 "negotiation");
2426 p2p_connect_send(p2p, p2p->go_neg_peer);
2427 return 1;
2428 }
2429
2430 return 0;
2431}
2432
2433
2434void p2p_scan_res_handled(struct p2p_data *p2p)
2435{
2436 if (!p2p->p2p_scan_running) {
2437 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2438 "running, but scan results received");
2439 }
2440 p2p->p2p_scan_running = 0;
2441 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2442
2443 if (p2p_run_after_scan(p2p))
2444 return;
2445 if (p2p->state == P2P_SEARCH)
2446 p2p_continue_find(p2p);
2447}
2448
2449
2450void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies)
2451{
2452 u8 *len = p2p_buf_add_ie_hdr(ies);
2453 p2p_buf_add_capability(ies, p2p->dev_capab, 0);
2454 if (p2p->cfg->reg_class && p2p->cfg->channel)
2455 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2456 p2p->cfg->reg_class,
2457 p2p->cfg->channel);
2458 if (p2p->ext_listen_interval)
2459 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2460 p2p->ext_listen_interval);
2461 /* TODO: p2p_buf_add_operating_channel() if GO */
2462 p2p_buf_update_ie_hdr(ies, len);
2463}
2464
2465
206e1f42
JM		 2466size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2467{
2468 return 100;
2469}
2470
2471
b22128ef
JM		 2472int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2473{
2474 return p2p_attr_text(p2p_ie, buf, end);
2475}
2476
2477
2478static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2479{
2480 struct p2p_device *dev = p2p->go_neg_peer;
2481
2482 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2483 "P2P: GO Negotiation Request TX callback: success=%d",
2484 success);
2485
2486 if (dev == NULL) {
2487 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2488 "P2P: No pending GO Negotiation");
2489 return;
2490 }
2491
2492 if (success) {
2493 dev->go_neg_req_sent++;
2494 if (dev->flags & P2P_DEV_USER_REJECTED) {
2495 p2p_set_state(p2p, P2P_IDLE);
2496 return;
2497 }
2498 }
2499
2500 if (!success &&
c5db8e51 2501 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
b22128ef
JM		 2502 !is_zero_ether_addr(dev->member_in_go_dev)) {
2503 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2504 "P2P: Peer " MACSTR " did not acknowledge request - "
2505 "try to use device discoverability through its GO",
c5db8e51 2506 MAC2STR(dev->info.p2p_device_addr));
b22128ef
JM		 2507 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2508 p2p_send_dev_disc_req(p2p, dev);
2509 return;
2510 }
2511
2512 /*
2513 * Use P2P find, if needed, to find the other device from its listen
2514 * channel.
2515 */
2516 p2p_set_state(p2p, P2P_CONNECT);
2517 p2p_set_timeout(p2p, 0, 100000);
2518}
2519
2520
2521static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2522{
2523 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2524 "P2P: GO Negotiation Response TX callback: success=%d",
2525 success);
2526 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2527 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2528 "P2P: Ignore TX callback event - GO Negotiation is "
2529 "not running anymore");
2530 return;
2531 }
2532 p2p_set_state(p2p, P2P_CONNECT);
2533 p2p_set_timeout(p2p, 0, 100000);
2534}
2535
2536
2537static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
2538{
2539 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2540 "P2P: GO Negotiation Response (failure) TX callback: "
2541 "success=%d", success);
fbe70272
JM		 2542 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2543 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2544 p2p->go_neg_peer->status);
2545 }
b22128ef
JM		 2546}
2547
2548
93b7ddd0
JM		 2549static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2550 enum p2p_send_action_result result)
b22128ef
JM		 2551{
2552 struct p2p_device *dev;
2553
2554 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
93b7ddd0
JM		 2555 "P2P: GO Negotiation Confirm TX callback: result=%d",
2556 result);
b22128ef 2557 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
93b7ddd0
JM		 2558 if (result == P2P_SEND_ACTION_FAILED) {
2559 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2560 return;
2561 }
2562 if (result == P2P_SEND_ACTION_NO_ACK) {
b22128ef
JM		 2563 /*
2564 * It looks like the TX status for GO Negotiation Confirm is
2565 * often showing failure even when the peer has actually
2566 * received the frame. Since the peer may change channels
2567 * immediately after having received the frame, we may not see
2568 * an Ack for retries, so just dropping a single frame may
2569 * trigger this. To allow the group formation to succeed if the
2570 * peer did indeed receive the frame, continue regardless of
2571 * the TX status.
2572 */
2573 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2574 "P2P: Assume GO Negotiation Confirm TX was actually "
2575 "received by the peer even though Ack was not "
2576 "reported");
2577 }
2578
2579 dev = p2p->go_neg_peer;
2580 if (dev == NULL)
2581 return;
2582
2583 p2p_go_complete(p2p, dev);
2584}
2585
2586
2587void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
93b7ddd0
JM		 2588 const u8 *src, const u8 *bssid,
2589 enum p2p_send_action_result result)
b22128ef
JM		 2590{
2591 enum p2p_pending_action_state state;
93b7ddd0 2592 int success;
b22128ef
JM		 2593
2594 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2595 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
93b7ddd0 2596 " src=" MACSTR " bssid=" MACSTR " result=%d",
b22128ef 2597 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
93b7ddd0
JM		 2598 MAC2STR(bssid), result);
2599 success = result == P2P_SEND_ACTION_SUCCESS;
b22128ef
JM		 2600 state = p2p->pending_action_state;
2601 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2602 switch (state) {
2603 case P2P_NO_PENDING_ACTION:
2604 break;
2605 case P2P_PENDING_GO_NEG_REQUEST:
2606 p2p_go_neg_req_cb(p2p, success);
2607 break;
2608 case P2P_PENDING_GO_NEG_RESPONSE:
2609 p2p_go_neg_resp_cb(p2p, success);
2610 break;
2611 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2612 p2p_go_neg_resp_failure_cb(p2p, success);
2613 break;
2614 case P2P_PENDING_GO_NEG_CONFIRM:
93b7ddd0 2615 p2p_go_neg_conf_cb(p2p, result);
b22128ef
JM		 2616 break;
2617 case P2P_PENDING_SD:
2618 p2p_sd_cb(p2p, success);
2619 break;
2620 case P2P_PENDING_PD:
2621 p2p_prov_disc_cb(p2p, success);
2622 break;
2623 case P2P_PENDING_INVITATION_REQUEST:
2624 p2p_invitation_req_cb(p2p, success);
2625 break;
2626 case P2P_PENDING_INVITATION_RESPONSE:
2627 p2p_invitation_resp_cb(p2p, success);
2628 break;
2629 case P2P_PENDING_DEV_DISC_REQUEST:
2630 p2p_dev_disc_req_cb(p2p, success);
2631 break;
2632 case P2P_PENDING_DEV_DISC_RESPONSE:
2633 p2p_dev_disc_resp_cb(p2p, success);
2634 break;
2635 case P2P_PENDING_GO_DISC_REQ:
2636 p2p_go_disc_req_cb(p2p, success);
2637 break;
2638 }
2639}
2640
2641
2642void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2643 unsigned int duration)
2644{
2645 if (freq == p2p->pending_client_disc_freq) {
2646 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2647 "P2P: Client discoverability remain-awake completed");
2648 p2p->pending_client_disc_freq = 0;
2649 return;
2650 }
2651
2652 if (freq != p2p->pending_listen_freq) {
2653 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2654 "P2P: Unexpected listen callback for freq=%u "
2655 "duration=%u (pending_listen_freq=%u)",
2656 freq, duration, p2p->pending_listen_freq);
2657 return;
2658 }
2659
2660 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2661 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
2662 "callback",
2663 p2p->pending_listen_sec, p2p->pending_listen_usec,
2664 p2p->pending_listen_freq);
2665 p2p->in_listen = 1;
0b8889d8 2666 p2p->drv_in_listen = freq;
b22128ef
JM		 2667 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
2668 /*
2669 * Add 20 msec extra wait to avoid race condition with driver
2670 * remain-on-channel end event, i.e., give driver more time to
2671 * complete the operation before our timeout expires.
2672 */
2673 p2p_set_timeout(p2p, p2p->pending_listen_sec,
2674 p2p->pending_listen_usec + 20000);
2675 }
2676
2677 p2p->pending_listen_freq = 0;
2678}
2679
2680
2681int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
2682{
2683 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
2684 "state (freq=%u)", freq);
2685 p2p->drv_in_listen = 0;
2686 if (p2p->in_listen)
2687 return 0; /* Internal timeout will trigger the next step */
2688
2689 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
e24cf97c
JM		 2690 if (p2p->go_neg_peer->connect_reqs >= 120) {
2691 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2692 "P2P: Timeout on sending GO Negotiation "
2693 "Request without getting response");
2694 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2695 return 0;
2696 }
2697
b22128ef
JM		 2698 p2p_set_state(p2p, P2P_CONNECT);
2699 p2p_connect_send(p2p, p2p->go_neg_peer);
2700 return 1;
2701 } else if (p2p->state == P2P_SEARCH) {
2702 p2p_search(p2p);
2703 return 1;
2704 }
2705
2706 return 0;
2707}
2708
2709
2710static void p2p_timeout_connect(struct p2p_data *p2p)
2711{
2712 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2713 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
2714 p2p_listen_in_find(p2p);
2715}
2716
2717
2718static void p2p_timeout_connect_listen(struct p2p_data *p2p)
2719{
2720 if (p2p->go_neg_peer) {
2721 if (p2p->drv_in_listen) {
2722 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
2723 "still in Listen state; wait for it to "
2724 "complete");
2725 return;
2726 }
9dac8c3e
FM		 2727
2728 if (p2p->go_neg_peer->connect_reqs >= 120) {
2729 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2730 "P2P: Timeout on sending GO Negotiation "
2731 "Request without getting response");
2732 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2733 return;
2734 }
2735
b22128ef
JM		 2736 p2p_set_state(p2p, P2P_CONNECT);
2737 p2p_connect_send(p2p, p2p->go_neg_peer);
2738 } else
2739 p2p_set_state(p2p, P2P_IDLE);
2740}
2741
2742
2743static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
2744{
2745 /*
2746 * TODO: could remain constantly in Listen state for some time if there
2747 * are no other concurrent uses for the radio. For now, go to listen
2748 * state once per second to give other uses a chance to use the radio.
2749 */
2750 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
2751 p2p_set_timeout(p2p, 1, 0);
2752}
2753
2754
2755static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
2756{
2757 struct p2p_device *dev = p2p->go_neg_peer;
2758
2759 if (dev == NULL) {
2760 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2761 "P2P: Unknown GO Neg peer - stop GO Neg wait");
2762 return;
2763 }
2764
2765 dev->wait_count++;
2766 if (dev->wait_count >= 120) {
2767 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2768 "P2P: Timeout on waiting peer to become ready for GO "
2769 "Negotiation");
2770 p2p_go_neg_failed(p2p, dev, -1);
2771 return;
2772 }
2773
2774 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2775 "P2P: Go to Listen state while waiting for the peer to become "
2776 "ready for GO Negotiation");
2777 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
2778 p2p_listen_in_find(p2p);
2779}
2780
2781
2782static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
2783{
2784 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2785 "P2P: Service Discovery Query timeout");
2786 if (p2p->sd_peer) {
2787 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2788 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2789 p2p->sd_peer = NULL;
2790 }
2791 p2p_continue_find(p2p);
2792}
2793
2794
2795static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
2796{
2797 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2798 "P2P: Provision Discovery Request timeout");
2799 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2800 p2p_continue_find(p2p);
2801}
2802
2803
6b56cc2d
JS		 2804static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
2805{
2806 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2807
2808 /*
2809 * For user initiated PD requests that we have not gotten any responses
2810 * for while in IDLE state, we retry them a couple of times before
2811 * giving up.
2812 */
2813 if (!p2p->user_initiated_pd)
2814 return;
2815
2816 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2817 "P2P: User initiated Provision Discovery Request timeout");
2818
2819 if (p2p->pd_retries) {
2820 p2p->pd_retries--;
2821 p2p_retry_pd(p2p);
2822 } else {
349b213c
JS		 2823 if (p2p->cfg->prov_disc_fail)
2824 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
2825 p2p->pending_pd_devaddr,
2826 P2P_PROV_DISC_TIMEOUT);
6b56cc2d
JS		 2827 p2p_reset_pending_pd(p2p);
2828 }
2829}
2830
2831
b22128ef
JM		 2832static void p2p_timeout_invite(struct p2p_data *p2p)
2833{
2834 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2835 p2p_set_state(p2p, P2P_INVITE_LISTEN);
04d8dad5
JM		 2836 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
2837 /*
2838 * Better remain on operating channel instead of listen channel
2839 * when running a group.
2840 */
2841 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
2842 "active GO role - wait on operating channel");
2843 p2p_set_timeout(p2p, 0, 100000);
2844 return;
2845 }
b22128ef
JM		 2846 p2p_listen_in_find(p2p);
2847}
2848
2849
2850static void p2p_timeout_invite_listen(struct p2p_data *p2p)
2851{
2852 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
2853 p2p_set_state(p2p, P2P_INVITE);
2854 p2p_invite_send(p2p, p2p->invite_peer,
2855 p2p->invite_go_dev_addr);
2856 } else {
2857 if (p2p->invite_peer) {
2858 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2859 "P2P: Invitation Request retry limit reached");
2860 if (p2p->cfg->invitation_result)
2861 p2p->cfg->invitation_result(
2862 p2p->cfg->cb_ctx, -1, NULL);
2863 }
2864 p2p_set_state(p2p, P2P_IDLE);
2865 }
2866}
2867
2868
2869static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
2870{
2871 struct p2p_data *p2p = eloop_ctx;
2872
2873 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
2874 p2p_state_txt(p2p->state));
2875
2876 p2p->in_listen = 0;
2877
2878 switch (p2p->state) {
2879 case P2P_IDLE:
6b56cc2d
JS		 2880 /* Check if we timed out waiting for PD req */
2881 if (p2p->pending_action_state == P2P_PENDING_PD)
2882 p2p_timeout_prov_disc_req(p2p);
b22128ef
JM		 2883 break;
2884 case P2P_SEARCH:
6b56cc2d
JS		 2885 /* Check if we timed out waiting for PD req */
2886 if (p2p->pending_action_state == P2P_PENDING_PD)
2887 p2p_timeout_prov_disc_req(p2p);
b22128ef
JM		 2888 p2p_search(p2p);
2889 break;
2890 case P2P_CONNECT:
2891 p2p_timeout_connect(p2p);
2892 break;
2893 case P2P_CONNECT_LISTEN:
2894 p2p_timeout_connect_listen(p2p);
2895 break;
2896 case P2P_GO_NEG:
2897 break;
2898 case P2P_LISTEN_ONLY:
6b56cc2d
JS		 2899 /* Check if we timed out waiting for PD req */
2900 if (p2p->pending_action_state == P2P_PENDING_PD)
2901 p2p_timeout_prov_disc_req(p2p);
2902
b22128ef
JM		 2903 if (p2p->ext_listen_only) {
2904 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2905 "P2P: Extended Listen Timing - Listen State "
2906 "completed");
2907 p2p->ext_listen_only = 0;
2908 p2p_set_state(p2p, P2P_IDLE);
2909 }
2910 break;
2911 case P2P_WAIT_PEER_CONNECT:
2912 p2p_timeout_wait_peer_connect(p2p);
2913 break;
2914 case P2P_WAIT_PEER_IDLE:
2915 p2p_timeout_wait_peer_idle(p2p);
2916 break;
2917 case P2P_SD_DURING_FIND:
2918 p2p_timeout_sd_during_find(p2p);
2919 break;
2920 case P2P_PROVISIONING:
2921 break;
2922 case P2P_PD_DURING_FIND:
2923 p2p_timeout_prov_disc_during_find(p2p);
2924 break;
2925 case P2P_INVITE:
2926 p2p_timeout_invite(p2p);
2927 break;
2928 case P2P_INVITE_LISTEN:
2929 p2p_timeout_invite_listen(p2p);
2930 break;
2931 }
2932}
2933
2934
2935int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
2936{
2937 struct p2p_device *dev;
2938
2939 dev = p2p_get_device(p2p, peer_addr);
2940 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
2941 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
2942 if (dev == NULL) {
2943 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
2944 " unknown", MAC2STR(peer_addr));
2945 return -1;
2946 }
2947 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
2948 dev->flags |= P2P_DEV_USER_REJECTED;
2949 return 0;
2950}
2951
2952
2953static const char * p2p_wps_method_text(enum p2p_wps_method method)
2954{
2955 switch (method) {
2956 case WPS_NOT_READY:
2957 return "not-ready";
b22128ef
JM		 2958 case WPS_PIN_DISPLAY:
2959 return "Display";
2960 case WPS_PIN_KEYPAD:
2961 return "Keypad";
2962 case WPS_PBC:
2963 return "PBC";
2964 }
2965
2966 return "??";
2967}
2968
2969
2970static const char * p2p_go_state_text(enum p2p_go_state go_state)
2971{
2972 switch (go_state) {
2973 case UNKNOWN_GO:
2974 return "unknown";
2975 case LOCAL_GO:
2976 return "local";
2977 case REMOTE_GO:
2978 return "remote";
2979 }
2980
2981 return "??";
2982}
2983
2984
2985int p2p_get_peer_info(struct p2p_data *p2p, const u8 *addr, int next,
2986 char *buf, size_t buflen)
2987{
2988 struct p2p_device *dev;
2989 int res;
2990 char *pos, *end;
2991 struct os_time now;
2992 char devtype[WPS_DEV_TYPE_BUFSIZE];
2993
2994 if (addr)
2995 dev = p2p_get_device(p2p, addr);
2996 else
2997 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
2998
2999 if (dev && next) {
3000 dev = dl_list_first(&dev->list, struct p2p_device, list);
3001 if (&dev->list == &p2p->devices)
3002 dev = NULL;
3003 }
3004
3005 if (dev == NULL)
3006 return -1;
3007
3008 pos = buf;
3009 end = buf + buflen;
3010
3011 res = os_snprintf(pos, end - pos, MACSTR "\n",
c5db8e51 3012 MAC2STR(dev->info.p2p_device_addr));
b22128ef
JM		 3013 if (res < 0 || res >= end - pos)
3014 return pos - buf;
3015 pos += res;
3016
3017 os_get_time(&now);
3018 res = os_snprintf(pos, end - pos,
3019 "age=%d\n"
3020 "listen_freq=%d\n"
3021 "level=%d\n"
3022 "wps_method=%s\n"
3023 "interface_addr=" MACSTR "\n"
3024 "member_in_go_dev=" MACSTR "\n"
3025 "member_in_go_iface=" MACSTR "\n"
3026 "pri_dev_type=%s\n"
3027 "device_name=%s\n"
b67d0d9e
JM		 3028 "manufacturer=%s\n"
3029 "model_name=%s\n"
3030 "model_number=%s\n"
3031 "serial_number=%s\n"
b22128ef
JM		 3032 "config_methods=0x%x\n"
3033 "dev_capab=0x%x\n"
3034 "group_capab=0x%x\n"
3035 "go_neg_req_sent=%d\n"
3036 "go_state=%s\n"
3037 "dialog_token=%u\n"
3038 "intended_addr=" MACSTR "\n"
3039 "country=%c%c\n"
3040 "oper_freq=%d\n"
3041 "req_config_methods=0x%x\n"
10c4edde 3042 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
b22128ef
JM		 3043 "status=%d\n"
3044 "wait_count=%u\n"
3045 "invitation_reqs=%u\n",
3046 (int) (now.sec - dev->last_seen.sec),
3047 dev->listen_freq,
6402fc43 3048 dev->info.level,
b22128ef
JM		 3049 p2p_wps_method_text(dev->wps_method),
3050 MAC2STR(dev->interface_addr),
3051 MAC2STR(dev->member_in_go_dev),
3052 MAC2STR(dev->member_in_go_iface),
c5db8e51 3053 wps_dev_type_bin2str(dev->info.pri_dev_type,
b22128ef 3054 devtype, sizeof(devtype)),
c5db8e51 3055 dev->info.device_name,
b67d0d9e
JM		 3056 dev->info.manufacturer,
3057 dev->info.model_name,
3058 dev->info.model_number,
3059 dev->info.serial_number,
c5db8e51
KRK		 3060 dev->info.config_methods,
3061 dev->info.dev_capab,
3062 dev->info.group_capab,
b22128ef
JM		 3063 dev->go_neg_req_sent,
3064 p2p_go_state_text(dev->go_state),
3065 dev->dialog_token,
3066 MAC2STR(dev->intended_addr),
3067 dev->country[0] ? dev->country[0] : '_',
3068 dev->country[1] ? dev->country[1] : '_',
3069 dev->oper_freq,
3070 dev->req_config_methods,
3071 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3072 "[PROBE_REQ_ONLY]" : "",
3073 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3074 dev->flags & P2P_DEV_NOT_YET_READY ?
3075 "[NOT_YET_READY]" : "",
3076 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3077 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3078 "",
3079 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3080 "[PD_PEER_DISPLAY]" : "",
3081 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3082 "[PD_PEER_KEYPAD]" : "",
3083 dev->flags & P2P_DEV_USER_REJECTED ?
3084 "[USER_REJECTED]" : "",
3085 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3086 "[PEER_WAITING_RESPONSE]" : "",
3087 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3088 "[PREFER_PERSISTENT_GROUP]" : "",
3089 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3090 "[WAIT_GO_NEG_RESPONSE]" : "",
3091 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3092 "[WAIT_GO_NEG_CONFIRM]" : "",
3093 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3094 "[GROUP_CLIENT_ONLY]" : "",
d5b20a73 3095 dev->flags & P2P_DEV_FORCE_FREQ ?
10c4edde
JM		 3096 "[FORCE_FREQ]" : "",
3097 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3098 "[PD_FOR_JOIN]" : "",
b22128ef
JM		 3099 dev->status,
3100 dev->wait_count,
3101 dev->invitation_reqs);
3102 if (res < 0 || res >= end - pos)
3103 return pos - buf;
3104 pos += res;
3105
3106 if (dev->ext_listen_period) {
3107 res = os_snprintf(pos, end - pos,
3108 "ext_listen_period=%u\n"
3109 "ext_listen_interval=%u\n",
3110 dev->ext_listen_period,
3111 dev->ext_listen_interval);
3112 if (res < 0 || res >= end - pos)
3113 return pos - buf;
3114 pos += res;
3115 }
3116
3117 if (dev->oper_ssid_len) {
3118 res = os_snprintf(pos, end - pos,
3119 "oper_ssid=%s\n",
3120 wpa_ssid_txt(dev->oper_ssid,
3121 dev->oper_ssid_len));
3122 if (res < 0 || res >= end - pos)
3123 return pos - buf;
3124 pos += res;
3125 }
3126
3127 return pos - buf;
3128}
3129
3130
3131void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3132{
3133 if (enabled) {
3134 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3135 "discoverability enabled");
3136 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3137 } else {
3138 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3139 "discoverability disabled");
3140 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3141 }
3142}
3143
3144
3145static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3146 u32 duration2, u32 interval2)
3147{
3148 struct wpabuf *req;
3149 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3150 u8 *len;
3151
3152 req = wpabuf_alloc(100);
3153 if (req == NULL)
3154 return NULL;
3155
3156 if (duration1 || interval1) {
3157 os_memset(&desc1, 0, sizeof(desc1));
3158 desc1.count_type = 1;
3159 desc1.duration = duration1;
3160 desc1.interval = interval1;
3161 ptr1 = &desc1;
3162
3163 if (duration2 || interval2) {
3164 os_memset(&desc2, 0, sizeof(desc2));
3165 desc2.count_type = 2;
3166 desc2.duration = duration2;
3167 desc2.interval = interval2;
3168 ptr2 = &desc2;
3169 }
3170 }
3171
3172 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3173 len = p2p_buf_add_ie_hdr(req);
3174 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3175 p2p_buf_update_ie_hdr(req, len);
3176
3177 return req;
3178}
3179
3180
3181int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3182 const u8 *own_interface_addr, unsigned int freq,
3183 u32 duration1, u32 interval1, u32 duration2,
3184 u32 interval2)
3185{
3186 struct wpabuf *req;
3187
3188 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
3189 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
3190 "int1=%u dur2=%u int2=%u",
3191 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3192 freq, duration1, interval1, duration2, interval2);
3193
3194 req = p2p_build_presence_req(duration1, interval1, duration2,
3195 interval2);
3196 if (req == NULL)
3197 return -1;
3198
3199 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3f9285ff
JM		 3200 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3201 go_interface_addr,
3202 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
b22128ef
JM		 3203 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3204 "P2P: Failed to send Action frame");
3205 }
3206 wpabuf_free(req);
3207
3208 return 0;
3209}
3210
3211
3212static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3213 size_t noa_len, u8 dialog_token)
3214{
3215 struct wpabuf *resp;
3216 u8 *len;
3217
3218 resp = wpabuf_alloc(100 + noa_len);
3219 if (resp == NULL)
3220 return NULL;
3221
3222 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3223 len = p2p_buf_add_ie_hdr(resp);
3224 p2p_buf_add_status(resp, status);
3225 if (noa) {
3226 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3227 wpabuf_put_le16(resp, noa_len);
3228 wpabuf_put_data(resp, noa, noa_len);
3229 } else
3230 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3231 p2p_buf_update_ie_hdr(resp, len);
3232
3233 return resp;
3234}
3235
3236
3237static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3238 const u8 *sa, const u8 *data, size_t len,
3239 int rx_freq)
3240{
3241 struct p2p_message msg;
3242 u8 status;
3243 struct wpabuf *resp;
3244 size_t g;
3245 struct p2p_group *group = NULL;
3246 int parsed = 0;
3247 u8 noa[50];
3248 int noa_len;
3249
3250 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3251 "P2P: Received P2P Action - P2P Presence Request");
3252
3253 for (g = 0; g < p2p->num_groups; g++) {
3254 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3255 ETH_ALEN) == 0) {
3256 group = p2p->groups[g];
3257 break;
3258 }
3259 }
3260 if (group == NULL) {
3261 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3262 "P2P: Ignore P2P Presence Request for unknown group "
3263 MACSTR, MAC2STR(da));
3264 return;
3265 }
3266
3267 if (p2p_parse(data, len, &msg) < 0) {
3268 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3269 "P2P: Failed to parse P2P Presence Request");
3270 status = P2P_SC_FAIL_INVALID_PARAMS;
3271 goto fail;
3272 }
3273 parsed = 1;
3274
3275 if (msg.noa == NULL) {
3276 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3277 "P2P: No NoA attribute in P2P Presence Request");
3278 status = P2P_SC_FAIL_INVALID_PARAMS;
3279 goto fail;
3280 }
3281
3282 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3283
3284fail:
3285 if (p2p->cfg->get_noa)
3286 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3287 sizeof(noa));
3288 else
3289 noa_len = -1;
3290 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3291 noa_len > 0 ? noa_len : 0,
3292 msg.dialog_token);
3293 if (parsed)
3294 p2p_parse_free(&msg);
3295 if (resp == NULL)
3296 return;
3297
3298 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3f9285ff
JM		 3299 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3300 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
b22128ef
JM		 3301 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3302 "P2P: Failed to send Action frame");
3303 }
3304 wpabuf_free(resp);
3305}
3306
3307
3308static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3309 const u8 *sa, const u8 *data, size_t len)
3310{
3311 struct p2p_message msg;
3312
3313 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3314 "P2P: Received P2P Action - P2P Presence Response");
3315
3316 if (p2p_parse(data, len, &msg) < 0) {
3317 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3318 "P2P: Failed to parse P2P Presence Response");
3319 return;
3320 }
3321
3322 if (msg.status == NULL || msg.noa == NULL) {
3323 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3324 "P2P: No Status or NoA attribute in P2P Presence "
3325 "Response");
3326 p2p_parse_free(&msg);
3327 return;
3328 }
3329
3330 if (*msg.status) {
3331 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3332 "P2P: P2P Presence Request was rejected: status %u",
3333 *msg.status);
3334 p2p_parse_free(&msg);
3335 return;
3336 }
3337
3338 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3339 "P2P: P2P Presence Request was accepted");
3340 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3341 msg.noa, msg.noa_len);
3342 /* TODO: process NoA */
3343 p2p_parse_free(&msg);
3344}
3345
3346
3347static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3348{
3349 struct p2p_data *p2p = eloop_ctx;
3350
3351 if (p2p->ext_listen_interval) {
3352 /* Schedule next extended listen timeout */
3353 eloop_register_timeout(p2p->ext_listen_interval_sec,
3354 p2p->ext_listen_interval_usec,
3355 p2p_ext_listen_timeout, p2p, NULL);
3356 }
3357
f7a69057
JM		 3358 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3359 /*
3360 * This should not really happen, but it looks like the Listen
3361 * command may fail is something else (e.g., a scan) was
3362 * running at an inconvenient time. As a workaround, allow new
3363 * Extended Listen operation to be started.
3364 */
3365 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
3366 "Extended Listen operation had not been completed - "
3367 "try again");
3368 p2p->ext_listen_only = 0;
3369 p2p_set_state(p2p, P2P_IDLE);
3370 }
3371
b22128ef
JM		 3372 if (p2p->state != P2P_IDLE) {
3373 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
3374 "Listen timeout in active state (%s)",
3375 p2p_state_txt(p2p->state));
3376 return;
3377 }
3378
3379 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
3380 p2p->ext_listen_only = 1;
3381 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3382 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
3383 "Listen state for Extended Listen Timing");
3384 p2p->ext_listen_only = 0;
3385 }
3386}
3387
3388
3389int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3390 unsigned int interval)
3391{
3392 if (period > 65535 || interval > 65535 || period > interval ||
3393 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3394 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3395 "P2P: Invalid Extended Listen Timing request: "
3396 "period=%u interval=%u", period, interval);
3397 return -1;
3398 }
3399
3400 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3401
3402 if (interval == 0) {
3403 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3404 "P2P: Disabling Extended Listen Timing");
3405 p2p->ext_listen_period = 0;
3406 p2p->ext_listen_interval = 0;
3407 return 0;
3408 }
3409
3410 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3411 "P2P: Enabling Extended Listen Timing: period %u msec, "
3412 "interval %u msec", period, interval);
3413 p2p->ext_listen_period = period;
3414 p2p->ext_listen_interval = interval;
3415 p2p->ext_listen_interval_sec = interval / 1000;
3416 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3417
3418 eloop_register_timeout(p2p->ext_listen_interval_sec,
3419 p2p->ext_listen_interval_usec,
3420 p2p_ext_listen_timeout, p2p, NULL);
3421
3422 return 0;
3423}
3424
3425
3426void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3427 const u8 *ie, size_t ie_len)
3428{
3429 struct p2p_message msg;
3430
3431 if (bssid == NULL || ie == NULL)
3432 return;
3433
3434 os_memset(&msg, 0, sizeof(msg));
3435 if (p2p_parse_ies(ie, ie_len, &msg))
3436 return;
3437 if (msg.minor_reason_code == NULL)
3438 return;
3439
3440 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3441 "P2P: Deauthentication notification BSSID " MACSTR
3442 " reason_code=%u minor_reason_code=%u",
3443 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3444
3445 p2p_parse_free(&msg);
3446}
3447
3448
3449void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3450 const u8 *ie, size_t ie_len)
3451{
3452 struct p2p_message msg;
3453
3454 if (bssid == NULL || ie == NULL)
3455 return;
3456
3457 os_memset(&msg, 0, sizeof(msg));
3458 if (p2p_parse_ies(ie, ie_len, &msg))
3459 return;
3460 if (msg.minor_reason_code == NULL)
3461 return;
3462
3463 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3464 "P2P: Disassociation notification BSSID " MACSTR
3465 " reason_code=%u minor_reason_code=%u",
3466 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3467
3468 p2p_parse_free(&msg);
3469}
3470
3471
3472void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3473{
3474 if (enabled) {
3475 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3476 "Device operations enabled");
3477 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3478 } else {
3479 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3480 "Device operations disabled");
3481 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3482 }
3483}
3484
3485
3486int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3487{
3488 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
3489 return -1;
3490
3491 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
3492 "reg_class %u channel %u", reg_class, channel);
3493 p2p->cfg->reg_class = reg_class;
3494 p2p->cfg->channel = channel;
3495
3496 return 0;
3497}
3498
3499
3500int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3501{
3502 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
3503 if (postfix == NULL) {
3504 p2p->cfg->ssid_postfix_len = 0;
3505 return 0;
3506 }
3507 if (len > sizeof(p2p->cfg->ssid_postfix))
3508 return -1;
3509 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3510 p2p->cfg->ssid_postfix_len = len;
3511 return 0;
3512}
3513
3514
2463ba70
JS		 3515int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3516 int cfg_op_channel)
3517{
3518 if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel)
3519 < 0)
3520 return -1;
3521
3522 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: "
3523 "reg_class %u channel %u", op_reg_class, op_channel);
3524 p2p->cfg->op_reg_class = op_reg_class;
3525 p2p->cfg->op_channel = op_channel;
3526 p2p->cfg->cfg_op_channel = cfg_op_channel;
3527 return 0;
3528}
3529
3530
b22128ef
JM		 3531int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3532 u8 *iface_addr)
3533{
3534 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3535 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3536 return -1;
3537 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3538 return 0;
3539}
80c9582a
JM		 3540
3541
4147a2cc
JM		 3542int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3543 u8 *dev_addr)
3544{
3545 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3546 if (dev == NULL)
3547 return -1;
c5db8e51 3548 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4147a2cc
JM		 3549 return 0;
3550}
3551
3552
80c9582a
JM		 3553void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3554{
3555 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
3556 if (is_zero_ether_addr(p2p->peer_filter))
3557 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
3558 "filter");
3559 else
3560 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
3561 "filter for " MACSTR, MAC2STR(p2p->peer_filter));
3562}
72044390
JM		 3563
3564
3565void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
3566{
3567 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
3568 enabled ? "enabled" : "disabled");
3569 if (p2p->cross_connect == enabled)
3570 return;
3571 p2p->cross_connect = enabled;
3572 /* TODO: may need to tear down any action group where we are GO(?) */
3573}
f8d0131a
JM		 3574
3575
3576int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
3577{
3578 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3579 if (dev == NULL)
3580 return -1;
3581 if (dev->oper_freq <= 0)
3582 return -1;
3583 return dev->oper_freq;
3584}
0f66abd2
SS		 3585
3586
3587void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
3588{
3589 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
3590 enabled ? "enabled" : "disabled");
3591 p2p->cfg->p2p_intra_bss = enabled;
3592}
b5c9da8d
JM		 3593
3594
3595void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
3596{
3597 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
3598 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
3599}
3f9285ff
JM		 3600
3601
3602int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3603 const u8 *src, const u8 *bssid, const u8 *buf,
3604 size_t len, unsigned int wait_time)
3605{
3606 if (p2p->p2p_scan_running) {
3607 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
3608 "frame TX until p2p_scan completes");
3609 if (p2p->after_scan_tx) {
3610 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
3611 "previous pending Action frame TX");
3612 os_free(p2p->after_scan_tx);
3613 }
3614 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
3615 len);
3616 if (p2p->after_scan_tx == NULL)
3617 return -1;
3618 p2p->after_scan_tx->freq = freq;
3619 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
3620 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
3621 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
3622 p2p->after_scan_tx->len = len;
3623 p2p->after_scan_tx->wait_time = wait_time;
3624 os_memcpy(p2p->after_scan_tx + 1, buf, len);
3625 return 0;
3626 }
3627
3628 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
3629 buf, len, wait_time);
3630}
7cfc4ac3
AGS		 3631
3632
3633void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
3634 int freq_overall)
3635{
3636 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
3637 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall);
3638 p2p->best_freq_24 = freq_24;
3639 p2p->best_freq_5 = freq_5;
3640 p2p->best_freq_overall = freq_overall;
3641}
231bbd03
SS		 3642
3643
3644const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
3645{
3646 if (p2p == NULL || p2p->go_neg_peer == NULL)
3647 return NULL;
c5db8e51 3648 return p2p->go_neg_peer->info.p2p_device_addr;
231bbd03 3649}
c165d81e
JB		 3650
3651
3652const struct p2p_peer_info *
3653p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
3654{
3655 struct p2p_device *dev;
3656
3657 if (addr) {
3658 dev = p2p_get_device(p2p, addr);
3659 if (!dev)
3660 return NULL;
3661
3662 if (!next) {
3663 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
3664 return NULL;
3665
3666 return &dev->info;
3667 } else {
3668 do {
3669 dev = dl_list_first(&dev->list,
3670 struct p2p_device,
3671 list);
3672 if (&dev->list == &p2p->devices)
3673 return NULL;
3674 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
3675 }
3676 } else {
3677 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3678 if (!dev)
3679 return NULL;
3680 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
3681 dev = dl_list_first(&dev->list,
3682 struct p2p_device,
3683 list);
3684 if (&dev->list == &p2p->devices)
3685 return NULL;
3686 }
3687 }
3688
3689 return &dev->info;
3690}
303f60d3
JM		 3691
3692
3693int p2p_in_progress(struct p2p_data *p2p)
3694{
3695 if (p2p == NULL)
3696 return 0;
fc6997b3 3697 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
303f60d3 3698}
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