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WPS: Require PBC match with wps_pbc that specifies BSSID
[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 "
64 "entry " MACSTR, MAC2STR(dev->p2p_device_addr));
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) {
152 os_memcpy(res.peer_device_addr, peer->p2p_device_addr,
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) {
265 if (os_memcmp(dev->p2p_device_addr, addr, ETH_ALEN) == 0)
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);
327 os_memcpy(dev->p2p_device_addr, addr, ETH_ALEN);
328
329 return dev;
330}
331
332
333static void p2p_copy_client_info(struct p2p_device *dev,
334 struct p2p_client_info *cli)
335{
336 os_memcpy(dev->device_name, cli->dev_name, cli->dev_name_len);
337 dev->device_name[cli->dev_name_len] = '\0';
338 dev->dev_capab = cli->dev_capab;
339 dev->config_methods = cli->config_methods;
340 os_memcpy(dev->pri_dev_type, cli->pri_dev_type, 8);
341}
342
343
344static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
345 const u8 *go_interface_addr, int freq,
346 const u8 *gi, size_t gi_len)
347{
348 struct p2p_group_info info;
349 size_t c;
350 struct p2p_device *dev;
351
352 if (gi == NULL)
353 return 0;
354
355 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
356 return -1;
357
358 /*
359 * Clear old data for this group; if the devices are still in the
360 * group, the information will be restored in the loop following this.
361 */
362 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
363 if (os_memcpy(dev->member_in_go_iface, go_interface_addr,
364 ETH_ALEN) == 0) {
365 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
366 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
367 }
368 }
369
370 for (c = 0; c < info.num_clients; c++) {
371 struct p2p_client_info *cli = &info.client[c];
372 dev = p2p_get_device(p2p, cli->p2p_device_addr);
373 if (dev) {
374 /*
375 * Update information only if we have not received this
376 * directly from the client.
377 */
378 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
379 P2P_DEV_PROBE_REQ_ONLY))
380 p2p_copy_client_info(dev, cli);
381 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
382 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
383 }
384 } else {
385 dev = p2p_create_device(p2p, cli->p2p_device_addr);
386 if (dev == NULL)
387 continue;
388 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
389 p2p_copy_client_info(dev, cli);
390 dev->oper_freq = freq;
391 p2p->cfg->dev_found(
392 p2p->cfg->cb_ctx, dev->p2p_device_addr,
393 dev->p2p_device_addr, dev->pri_dev_type,
394 dev->device_name, dev->config_methods,
395 dev->dev_capab, 0);
396 }
397
398 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
399 ETH_ALEN);
400 os_get_time(&dev->last_seen);
401 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
402 os_memcpy(dev->member_in_go_iface, go_interface_addr,
403 ETH_ALEN);
404 }
405
406 return 0;
407}
408
409
410/**
411 * p2p_add_device - Add peer entries based on scan results
412 * @p2p: P2P module context from p2p_init()
413 * @addr: Source address of Beacon or Probe Response frame (may be either
414 * P2P Device Address or P2P Interface Address)
415 * @level: Signal level (signal strength of the received frame from the peer)
416 * @freq: Frequency on which the Beacon or Probe Response frame was received
417 * @ies: IEs from the Beacon or Probe Response frame
418 * @ies_len: Length of ies buffer in octets
419 * Returns: 0 on success, -1 on failure
420 *
421 * If the scan result is for a GO, the clients in the group will also be added
17bef1e9
AC		 422 * to the peer table. This function can also be used with some other frames
423 * like Provision Discovery Request that contains P2P Capability and P2P Device
424 * Info attributes.
b22128ef 425 */
17bef1e9
AC		 426int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
427 const u8 *ies, size_t ies_len)
b22128ef
JM		 428{
429 struct p2p_device *dev;
430 struct p2p_message msg;
431 const u8 *p2p_dev_addr;
432
433 os_memset(&msg, 0, sizeof(msg));
434 if (p2p_parse_ies(ies, ies_len, &msg)) {
435 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
436 "P2P: Failed to parse P2P IE for a device entry");
437 p2p_parse_free(&msg);
438 return -1;
439 }
440
441 if (msg.p2p_device_addr)
442 p2p_dev_addr = msg.p2p_device_addr;
443 else if (msg.device_id)
444 p2p_dev_addr = msg.device_id;
445 else {
446 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
447 "P2P: Ignore scan data without P2P Device Info or "
448 "P2P Device Id");
449 p2p_parse_free(&msg);
450 return -1;
451 }
452
80c9582a
JM		 453 if (!is_zero_ether_addr(p2p->peer_filter) &&
454 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
455 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
456 "filter for " MACSTR " due to peer filter",
457 MAC2STR(p2p_dev_addr));
458 return 0;
459 }
460
b22128ef
JM		 461 dev = p2p_create_device(p2p, p2p_dev_addr);
462 if (dev == NULL) {
463 p2p_parse_free(&msg);
464 return -1;
465 }
466 os_get_time(&dev->last_seen);
467 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
468
469 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
470 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
471 if (msg.ssid &&
472 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
473 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
474 != 0)) {
475 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
476 dev->oper_ssid_len = msg.ssid[1];
477 }
478
479 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
480 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
481 int ds_freq;
482 if (*msg.ds_params == 14)
483 ds_freq = 2484;
484 else
485 ds_freq = 2407 + *msg.ds_params * 5;
486 if (freq != ds_freq) {
487 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
488 "P2P: Update Listen frequency based on DS "
489 "Parameter Set IE: %d -> %d MHz",
490 freq, ds_freq);
491 freq = ds_freq;
492 }
493 }
494
495 if (dev->listen_freq && dev->listen_freq != freq) {
496 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
497 "P2P: Update Listen frequency based on scan "
498 "results (" MACSTR " %d -> %d MHz (DS param %d)",
499 MAC2STR(dev->p2p_device_addr), dev->listen_freq, freq,
500 msg.ds_params ? *msg.ds_params : -1);
501 }
502 dev->listen_freq = freq;
f8d0131a
JM		 503 if (msg.group_info)
504 dev->oper_freq = freq;
b22128ef
JM		 505 dev->level = level;
506
507 if (msg.pri_dev_type)
508 os_memcpy(dev->pri_dev_type, msg.pri_dev_type,
509 sizeof(dev->pri_dev_type));
510 os_memcpy(dev->device_name, msg.device_name, sizeof(dev->device_name));
511 dev->config_methods = msg.config_methods ? msg.config_methods :
512 msg.wps_config_methods;
513 if (msg.capability) {
514 dev->dev_capab = msg.capability[0];
515 dev->group_capab = msg.capability[1];
516 }
517
518 if (msg.ext_listen_timing) {
519 dev->ext_listen_period = WPA_GET_LE16(msg.ext_listen_timing);
520 dev->ext_listen_interval =
521 WPA_GET_LE16(msg.ext_listen_timing + 2);
522 }
523
524 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, msg.group_info,
525 msg.group_info_len);
526
527 p2p_parse_free(&msg);
528
529 if (p2p_pending_sd_req(p2p, dev))
530 dev->flags |= P2P_DEV_SD_SCHEDULE;
531
532 if (dev->flags & P2P_DEV_REPORTED)
533 return 0;
534
535 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
536 "P2P: Peer found with Listen frequency %d MHz", freq);
537 if (dev->flags & P2P_DEV_USER_REJECTED) {
538 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
539 "P2P: Do not report rejected device");
540 return 0;
541 }
542 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, dev->p2p_device_addr,
543 dev->pri_dev_type, dev->device_name,
544 dev->config_methods, dev->dev_capab,
545 dev->group_capab);
546 dev->flags |= P2P_DEV_REPORTED;
547
548 return 0;
549}
550
551
552static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
553{
554 if (p2p->go_neg_peer == dev)
555 p2p->go_neg_peer = NULL;
556 if (p2p->invite_peer == dev)
557 p2p->invite_peer = NULL;
558 if (p2p->sd_peer == dev)
559 p2p->sd_peer = NULL;
560 if (p2p->pending_client_disc_go == dev)
561 p2p->pending_client_disc_go = NULL;
562
563 os_free(dev);
564}
565
566
567static int p2p_get_next_prog_freq(struct p2p_data *p2p)
568{
569 struct p2p_channels *c;
570 struct p2p_reg_class *cla;
571 size_t cl, ch;
572 int found = 0;
573 u8 reg_class;
574 u8 channel;
575 int freq;
576
577 c = &p2p->cfg->channels;
578 for (cl = 0; cl < c->reg_classes; cl++) {
579 cla = &c->reg_class[cl];
580 if (cla->reg_class != p2p->last_prog_scan_class)
581 continue;
582 for (ch = 0; ch < cla->channels; ch++) {
583 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
584 found = 1;
585 break;
586 }
587 }
588 if (found)
589 break;
590 }
591
592 if (!found) {
593 /* Start from beginning */
594 reg_class = c->reg_class[0].reg_class;
595 channel = c->reg_class[0].channel[0];
596 } else {
597 /* Pick the next channel */
598 ch++;
599 if (ch == cla->channels) {
600 cl++;
601 if (cl == c->reg_classes)
602 cl = 0;
603 ch = 0;
604 }
605 reg_class = c->reg_class[cl].reg_class;
606 channel = c->reg_class[cl].channel[ch];
607 }
608
609 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
610 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
611 "channel: reg_class %u channel %u -> %d MHz",
612 reg_class, channel, freq);
613 p2p->last_prog_scan_class = reg_class;
614 p2p->last_prog_scan_chan = channel;
615
616 if (freq == 2412 || freq == 2437 || freq == 2462)
617 return 0; /* No need to add social channels */
618 return freq;
619}
620
621
622static void p2p_search(struct p2p_data *p2p)
623{
624 int freq = 0;
625 enum p2p_scan_type type;
626
627 if (p2p->drv_in_listen) {
628 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
629 "in Listen state - wait for it to end before "
630 "continuing");
631 return;
632 }
633 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
634
635 if (p2p->go_neg_peer) {
636 /*
637 * Only scan the known listen frequency of the peer
638 * during GO Negotiation start.
639 */
640 freq = p2p->go_neg_peer->listen_freq;
641 if (freq <= 0)
642 freq = p2p->go_neg_peer->oper_freq;
643 type = P2P_SCAN_SPECIFIC;
644 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
645 "for freq %u (GO Neg)", freq);
646 } else if (p2p->invite_peer) {
647 /*
648 * Only scan the known listen frequency of the peer
649 * during Invite start.
650 */
651 freq = p2p->invite_peer->listen_freq;
652 if (freq <= 0)
653 freq = p2p->invite_peer->oper_freq;
654 type = P2P_SCAN_SPECIFIC;
655 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
656 "for freq %u (Invite)", freq);
657 } else if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
658 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
659 type = P2P_SCAN_SOCIAL_PLUS_ONE;
660 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
661 "(+ freq %u)", freq);
662 } else {
663 type = P2P_SCAN_SOCIAL;
664 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
665 }
666
667 if (p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq) < 0) {
668 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
669 "P2P: Scan request failed");
670 p2p_continue_find(p2p);
40c03fd4
JM		 671 } else {
672 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
673 p2p->p2p_scan_running = 1;
674 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
675 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
676 p2p, NULL);
b22128ef
JM		 677 }
678}
679
680
681static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
682{
683 struct p2p_data *p2p = eloop_ctx;
684 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
685 p2p_stop_find(p2p);
686}
687
688
689static int p2p_run_after_scan(struct p2p_data *p2p)
690{
691 struct p2p_device *dev;
692 enum p2p_after_scan op;
693
3f9285ff
JM		 694 if (p2p->after_scan_tx) {
695 int ret;
696 /* TODO: schedule p2p_run_after_scan to be called from TX
697 * status callback(?) */
698 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
699 "Action frame at p2p_scan completion");
700 ret = p2p->cfg->send_action(p2p->cfg->cb_ctx,
701 p2p->after_scan_tx->freq,
702 p2p->after_scan_tx->dst,
703 p2p->after_scan_tx->src,
704 p2p->after_scan_tx->bssid,
705 (u8 *) (p2p->after_scan_tx + 1),
706 p2p->after_scan_tx->len,
707 p2p->after_scan_tx->wait_time);
708 os_free(p2p->after_scan_tx);
709 p2p->after_scan_tx = NULL;
710 return 1;
711 }
712
b22128ef
JM		 713 op = p2p->start_after_scan;
714 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
715 switch (op) {
716 case P2P_AFTER_SCAN_NOTHING:
717 break;
718 case P2P_AFTER_SCAN_LISTEN:
719 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
720 "requested Listen state");
721 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
722 p2p->pending_listen_usec / 1000);
723 return 1;
724 case P2P_AFTER_SCAN_CONNECT:
725 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
726 "requested connect with " MACSTR,
727 MAC2STR(p2p->after_scan_peer));
728 dev = p2p_get_device(p2p, p2p->after_scan_peer);
729 if (dev == NULL) {
730 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
731 "known anymore");
732 break;
733 }
734 p2p_connect_send(p2p, dev);
735 return 1;
736 }
737
738 return 0;
739}
740
741
b22128ef
JM		 742static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
743{
744 struct p2p_data *p2p = eloop_ctx;
745 int running;
746 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
747 "(running=%d)", p2p->p2p_scan_running);
748 running = p2p->p2p_scan_running;
749 /* Make sure we recover from missed scan results callback */
750 p2p->p2p_scan_running = 0;
751
752 if (running)
753 p2p_run_after_scan(p2p);
754}
755
756
757int p2p_find(struct p2p_data *p2p, unsigned int timeout,
758 enum p2p_discovery_type type)
759{
760 int res;
761
762 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
763 type);
764 if (p2p->p2p_scan_running) {
765 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
766 "already running");
767 }
768 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
769 p2p_clear_timeout(p2p);
770 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
771 p2p->find_type = type;
772 p2p_device_clear_reported(p2p);
773 p2p_set_state(p2p, P2P_SEARCH);
774 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
775 if (timeout)
776 eloop_register_timeout(timeout, 0, p2p_find_timeout,
777 p2p, NULL);
778 switch (type) {
779 case P2P_FIND_START_WITH_FULL:
780 case P2P_FIND_PROGRESSIVE:
781 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0);
782 break;
783 case P2P_FIND_ONLY_SOCIAL:
784 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0);
785 break;
786 default:
787 return -1;
788 }
789
790 if (res == 0) {
791 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
792 p2p->p2p_scan_running = 1;
793 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
794 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
795 p2p, NULL);
796 } else {
797 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
798 "p2p_scan");
799 }
800
801 return res;
802}
803
804
0b8889d8 805void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
b22128ef
JM		 806{
807 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
808 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
809 p2p_clear_timeout(p2p);
810 p2p_set_state(p2p, P2P_IDLE);
811 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
812 p2p->go_neg_peer = NULL;
813 p2p->sd_peer = NULL;
814 p2p->invite_peer = NULL;
0b8889d8
JM		 815 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
816 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
817 "since we are on correct channel for response");
818 return;
819 }
b22128ef
JM		 820 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
821}
822
823
0b8889d8
JM		 824void p2p_stop_find(struct p2p_data *p2p)
825{
826 p2p_stop_find_for_freq(p2p, 0);
827}
828
829
7861cb08 830static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq)
b22128ef 831{
b22128ef 832 if (force_freq) {
1e19f734 833 u8 op_reg_class, op_channel;
b22128ef 834 if (p2p_freq_to_channel(p2p->cfg->country, force_freq,
1e19f734 835 &op_reg_class, &op_channel) < 0) {
b22128ef
JM		 836 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
837 "P2P: Unsupported frequency %u MHz",
838 force_freq);
839 return -1;
840 }
1e19f734
JM		 841 if (!p2p_channels_includes(&p2p->cfg->channels, op_reg_class,
842 op_channel)) {
843 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
844 "P2P: Frequency %u MHz (oper_class %u "
845 "channel %u) not allowed for P2P",
846 force_freq, op_reg_class, op_channel);
847 return -1;
848 }
849 p2p->op_reg_class = op_reg_class;
850 p2p->op_channel = op_channel;
b22128ef
JM		 851 p2p->channels.reg_classes = 1;
852 p2p->channels.reg_class[0].channels = 1;
853 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
854 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
855 } else {
7cfc4ac3
AGS		 856 u8 op_reg_class, op_channel;
857
858 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
859 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
860 p2p_freq_to_channel(p2p->cfg->country,
861 p2p->best_freq_overall,
862 &op_reg_class, &op_channel) == 0) {
863 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
864 "P2P: Select best overall channel as "
865 "operating channel preference");
866 p2p->op_reg_class = op_reg_class;
867 p2p->op_channel = op_channel;
868 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
869 p2p_supported_freq(p2p, p2p->best_freq_5) &&
870 p2p_freq_to_channel(p2p->cfg->country,
871 p2p->best_freq_5,
872 &op_reg_class, &op_channel) ==
873 0) {
874 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
875 "P2P: Select best 5 GHz channel as "
876 "operating channel preference");
877 p2p->op_reg_class = op_reg_class;
878 p2p->op_channel = op_channel;
879 } else if (!p2p->cfg->cfg_op_channel &&
880 p2p->best_freq_24 > 0 &&
881 p2p_supported_freq(p2p, p2p->best_freq_24) &&
882 p2p_freq_to_channel(p2p->cfg->country,
883 p2p->best_freq_24,
884 &op_reg_class, &op_channel) ==
885 0) {
886 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
887 "P2P: Select best 2.4 GHz channel as "
888 "operating channel preference");
889 p2p->op_reg_class = op_reg_class;
890 p2p->op_channel = op_channel;
891 } else {
892 p2p->op_reg_class = p2p->cfg->op_reg_class;
893 p2p->op_channel = p2p->cfg->op_channel;
894 }
895
b22128ef
JM		 896 os_memcpy(&p2p->channels, &p2p->cfg->channels,
897 sizeof(struct p2p_channels));
898 }
899 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
900 "P2P: Own preference for operation channel: "
7cfc4ac3 901 "Operating Class %u Channel %u%s",
b22128ef
JM		 902 p2p->op_reg_class, p2p->op_channel,
903 force_freq ? " (forced)" : "");
904
7861cb08
JM		 905 return 0;
906}
907
908
909int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
910 enum p2p_wps_method wps_method,
911 int go_intent, const u8 *own_interface_addr,
912 unsigned int force_freq, int persistent_group)
913{
914 struct p2p_device *dev;
915
916 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
917 "P2P: Request to start group negotiation - peer=" MACSTR
918 " GO Intent=%d Intended Interface Address=" MACSTR
919 " wps_method=%d persistent_group=%d",
920 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
921 wps_method, persistent_group);
922
923 if (p2p_prepare_channel(p2p, force_freq) < 0)
924 return -1;
925
b22128ef
JM		 926 dev = p2p_get_device(p2p, peer_addr);
927 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
928 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
929 "P2P: Cannot connect to unknown P2P Device " MACSTR,
930 MAC2STR(peer_addr));
931 return -1;
932 }
933
934 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
935 if (!(dev->dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
936 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
937 "P2P: Cannot connect to P2P Device " MACSTR
938 " that is in a group and is not discoverable",
939 MAC2STR(peer_addr));
940 return -1;
941 }
942 if (dev->oper_freq <= 0) {
943 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
944 "P2P: Cannot connect to P2P Device " MACSTR
945 " with incomplete information",
946 MAC2STR(peer_addr));
947 return -1;
948 }
949
950 /*
951 * First, try to connect directly. If the peer does not
952 * acknowledge frames, assume it is sleeping and use device
953 * discoverability via the GO at that point.
954 */
955 }
956
957 dev->flags &= ~P2P_DEV_NOT_YET_READY;
958 dev->flags &= ~P2P_DEV_USER_REJECTED;
959 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
960 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
961 dev->go_neg_req_sent = 0;
962 dev->go_state = UNKNOWN_GO;
963 if (persistent_group)
964 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
965 else
966 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
967 p2p->go_intent = go_intent;
968 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
969
970 if (p2p->state != P2P_IDLE)
971 p2p_stop_find(p2p);
972
f44ae207
JM		 973 if (p2p->after_scan_tx) {
974 /*
975 * We need to drop the pending frame to avoid issues with the
976 * new GO Negotiation, e.g., when the pending frame was from a
977 * previous attempt at starting a GO Negotiation.
978 */
979 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
980 "previous pending Action frame TX that was waiting "
981 "for p2p_scan completion");
982 os_free(p2p->after_scan_tx);
983 p2p->after_scan_tx = NULL;
984 }
985
b22128ef
JM		 986 dev->wps_method = wps_method;
987 dev->status = P2P_SC_SUCCESS;
d5b20a73
JM		 988
989 if (force_freq)
990 dev->flags |= P2P_DEV_FORCE_FREQ;
991 else
992 dev->flags &= ~P2P_DEV_FORCE_FREQ;
993
b22128ef
JM		 994 if (p2p->p2p_scan_running) {
995 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
996 "P2P: p2p_scan running - delay connect send");
997 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
998 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
999 return 0;
1000 }
1001 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1002
1003 return p2p_connect_send(p2p, dev);
1004}
1005
1006
1007int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1008 enum p2p_wps_method wps_method,
1009 int go_intent, const u8 *own_interface_addr,
1010 unsigned int force_freq, int persistent_group)
1011{
1012 struct p2p_device *dev;
1013
1014 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1015 "P2P: Request to authorize group negotiation - peer=" MACSTR
1016 " GO Intent=%d Intended Interface Address=" MACSTR
1017 " wps_method=%d persistent_group=%d",
1018 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1019 wps_method, persistent_group);
1020
7861cb08
JM		 1021 if (p2p_prepare_channel(p2p, force_freq) < 0)
1022 return -1;
b22128ef
JM		 1023
1024 dev = p2p_get_device(p2p, peer_addr);
1025 if (dev == NULL) {
1026 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1027 "P2P: Cannot authorize unknown P2P Device " MACSTR,
1028 MAC2STR(peer_addr));
1029 return -1;
1030 }
1031
1032 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1033 dev->flags &= ~P2P_DEV_USER_REJECTED;
1034 dev->go_neg_req_sent = 0;
1035 dev->go_state = UNKNOWN_GO;
1036 if (persistent_group)
1037 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1038 else
1039 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
1040 p2p->go_intent = go_intent;
1041 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1042
1043 dev->wps_method = wps_method;
1044 dev->status = P2P_SC_SUCCESS;
1045
d5b20a73
JM		 1046 if (force_freq)
1047 dev->flags |= P2P_DEV_FORCE_FREQ;
1048 else
1049 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1050
b22128ef
JM		 1051 return 0;
1052}
1053
1054
1055void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1056 struct p2p_device *dev, struct p2p_message *msg)
1057{
1058 os_get_time(&dev->last_seen);
1059
1060 if (msg->pri_dev_type)
1061 os_memcpy(dev->pri_dev_type, msg->pri_dev_type,
1062 sizeof(dev->pri_dev_type));
1063 os_memcpy(dev->device_name, msg->device_name,
1064 sizeof(dev->device_name));
1065 dev->config_methods = msg->config_methods ? msg->config_methods :
1066 msg->wps_config_methods;
1067 if (msg->capability) {
1068 dev->dev_capab = msg->capability[0];
1069 dev->group_capab = msg->capability[1];
1070 }
1071 if (msg->listen_channel) {
1072 int freq;
1073 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1074 msg->listen_channel[3],
1075 msg->listen_channel[4]);
1076 if (freq < 0) {
1077 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1078 "P2P: Unknown peer Listen channel: "
1079 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1080 msg->listen_channel[0],
1081 msg->listen_channel[1],
1082 msg->listen_channel[2],
1083 msg->listen_channel[3],
1084 msg->listen_channel[4]);
1085 } else {
1086 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1087 "peer " MACSTR " Listen channel: %u -> %u MHz",
1088 MAC2STR(dev->p2p_device_addr),
1089 dev->listen_freq, freq);
1090 dev->listen_freq = freq;
1091 }
1092 }
1093 if (msg->ext_listen_timing) {
1094 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
1095 dev->ext_listen_interval =
1096 WPA_GET_LE16(msg->ext_listen_timing + 2);
1097 }
1098
1099 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1100 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1101 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1102 "P2P: Completed device entry based on data from "
1103 "GO Negotiation Request");
1104 } else {
1105 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1106 "P2P: Created device entry based on GO Neg Req: "
1107 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1108 "listen_freq=%d",
1109 MAC2STR(dev->p2p_device_addr), dev->dev_capab,
1110 dev->group_capab, dev->device_name, dev->listen_freq);
1111 }
1112
1113 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1114
1115 if (dev->flags & P2P_DEV_USER_REJECTED) {
1116 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1117 "P2P: Do not report rejected device");
1118 return;
1119 }
1120
1121 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, dev->p2p_device_addr,
1122 dev->pri_dev_type, dev->device_name,
1123 dev->config_methods, dev->dev_capab,
1124 dev->group_capab);
1125}
1126
1127
1128void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1129{
1130 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1131 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1132 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1133 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1134 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1135}
1136
1137
1138int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1139{
1140 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1141 p2p_random(params->passphrase, 8);
1142 return 0;
1143}
1144
1145
1146void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1147{
1148 struct p2p_go_neg_results res;
1149 int go = peer->go_state == LOCAL_GO;
1150 struct p2p_channels intersection;
1151 int freqs;
1152 size_t i, j;
1153
1154 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1155 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
1156 "GO)", MAC2STR(peer->p2p_device_addr),
1157 go ? "local end" : "peer");
1158
1159 os_memset(&res, 0, sizeof(res));
1160 res.role_go = go;
1161 os_memcpy(res.peer_device_addr, peer->p2p_device_addr, ETH_ALEN);
1162 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1163 res.wps_method = peer->wps_method;
1164 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP)
1165 res.persistent_group = 1;
1166
1167 if (go) {
1168 /* Setup AP mode for WPS provisioning */
1169 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1170 p2p->op_reg_class,
1171 p2p->op_channel);
1172 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1173 res.ssid_len = p2p->ssid_len;
1174 p2p_random(res.passphrase, 8);
e9a7ae41 1175 } else {
b22128ef 1176 res.freq = peer->oper_freq;
e9a7ae41
JM		 1177 if (p2p->ssid_len) {
1178 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1179 res.ssid_len = p2p->ssid_len;
1180 }
1181 }
b22128ef
JM		 1182
1183 p2p_channels_intersect(&p2p->channels, &peer->channels,
1184 &intersection);
1185 freqs = 0;
1186 for (i = 0; i < intersection.reg_classes; i++) {
1187 struct p2p_reg_class *c = &intersection.reg_class[i];
1188 if (freqs + 1 == P2P_MAX_CHANNELS)
1189 break;
1190 for (j = 0; j < c->channels; j++) {
1191 int freq;
1192 if (freqs + 1 == P2P_MAX_CHANNELS)
1193 break;
1194 freq = p2p_channel_to_freq(peer->country, c->reg_class,
1195 c->channel[j]);
1196 if (freq < 0)
1197 continue;
1198 res.freq_list[freqs++] = freq;
1199 }
1200 }
1201
ae3e3421
JM		 1202 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1203
b22128ef
JM		 1204 p2p_clear_timeout(p2p);
1205 peer->go_neg_req_sent = 0;
1206 peer->wps_method = WPS_NOT_READY;
1207
1208 p2p_set_state(p2p, P2P_PROVISIONING);
1209 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1210}
1211
1212
1213static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1214 const u8 *data, size_t len, int rx_freq)
1215{
1216 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1217 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1218 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1219
1220 if (len < 1)
1221 return;
1222
1223 switch (data[0]) {
1224 case P2P_GO_NEG_REQ:
1225 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1226 break;
1227 case P2P_GO_NEG_RESP:
1228 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1229 break;
1230 case P2P_GO_NEG_CONF:
1231 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1232 break;
1233 case P2P_INVITATION_REQ:
1234 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1235 rx_freq);
1236 break;
1237 case P2P_INVITATION_RESP:
1238 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1239 break;
1240 case P2P_PROV_DISC_REQ:
1241 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1242 break;
1243 case P2P_PROV_DISC_RESP:
1244 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1245 break;
1246 case P2P_DEV_DISC_REQ:
1247 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1248 break;
1249 case P2P_DEV_DISC_RESP:
1250 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1251 break;
1252 default:
1253 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1254 "P2P: Unsupported P2P Public Action frame type %d",
1255 data[0]);
1256 break;
1257 }
1258}
1259
1260
1261void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1262 const u8 *bssid, const u8 *data, size_t len,
1263 int freq)
1264{
1265 if (len < 1)
1266 return;
1267
1268 switch (data[0]) {
1269 case WLAN_PA_VENDOR_SPECIFIC:
1270 data++;
1271 len--;
1272 if (len < 3)
1273 return;
1274 if (WPA_GET_BE24(data) != OUI_WFA)
1275 return;
1276
1277 data += 3;
1278 len -= 3;
1279 if (len < 1)
1280 return;
1281
1282 if (*data != P2P_OUI_TYPE)
1283 return;
1284
1285 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1286 break;
1287 case WLAN_PA_GAS_INITIAL_REQ:
1288 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1289 break;
1290 case WLAN_PA_GAS_INITIAL_RESP:
18708aad
JM		 1291 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1292 break;
1293 case WLAN_PA_GAS_COMEBACK_REQ:
1294 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1295 break;
1296 case WLAN_PA_GAS_COMEBACK_RESP:
1297 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
b22128ef
JM		 1298 break;
1299 }
1300}
1301
1302
1303void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1304 const u8 *bssid, u8 category,
1305 const u8 *data, size_t len, int freq)
1306{
1307 if (category == WLAN_ACTION_PUBLIC) {
1308 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1309 return;
1310 }
1311
1312 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1313 return;
1314
1315 if (len < 4)
1316 return;
1317
1318 if (WPA_GET_BE24(data) != OUI_WFA)
1319 return;
1320 data += 3;
1321 len -= 3;
1322
1323 if (*data != P2P_OUI_TYPE)
1324 return;
1325 data++;
1326 len--;
1327
1328 /* P2P action frame */
1329 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1330 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1331 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1332
1333 if (len < 1)
1334 return;
1335 switch (data[0]) {
1336 case P2P_NOA:
1337 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1338 "P2P: Received P2P Action - Notice of Absence");
1339 /* TODO */
1340 break;
1341 case P2P_PRESENCE_REQ:
1342 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1343 break;
1344 case P2P_PRESENCE_RESP:
1345 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1346 break;
1347 case P2P_GO_DISC_REQ:
1348 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1349 break;
1350 default:
1351 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1352 "P2P: Received P2P Action - unknown type %u", data[0]);
1353 break;
1354 }
1355}
1356
1357
1358static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1359{
1360 struct p2p_data *p2p = eloop_ctx;
1361 if (p2p->go_neg_peer == NULL)
1362 return;
1363 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1364 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1365 p2p_connect_send(p2p, p2p->go_neg_peer);
1366}
1367
1368
1369static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1370{
1371 struct p2p_data *p2p = eloop_ctx;
1372 if (p2p->invite_peer == NULL)
1373 return;
1374 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1375 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1376}
1377
1378
1379static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1380 const u8 *ie, size_t ie_len)
1381{
1382 struct p2p_message msg;
1383 struct p2p_device *dev;
1384
1385 os_memset(&msg, 0, sizeof(msg));
1386 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1387 {
1388 p2p_parse_free(&msg);
1389 return; /* not a P2P probe */
1390 }
1391
1392 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1393 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1394 != 0) {
1395 /* The Probe Request is not part of P2P Device Discovery. It is
1396 * not known whether the source address of the frame is the P2P
1397 * Device Address or P2P Interface Address. Do not add a new
1398 * peer entry based on this frames.
1399 */
1400 p2p_parse_free(&msg);
1401 return;
1402 }
1403
1404 dev = p2p_get_device(p2p, addr);
1405 if (dev) {
1406 if (dev->country[0] == 0 && msg.listen_channel)
1407 os_memcpy(dev->country, msg.listen_channel, 3);
1408 p2p_parse_free(&msg);
1409 return; /* already known */
1410 }
1411
1412 dev = p2p_create_device(p2p, addr);
1413 if (dev == NULL) {
1414 p2p_parse_free(&msg);
1415 return;
1416 }
1417
1418 os_get_time(&dev->last_seen);
1419 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1420
1421 if (msg.capability) {
1422 dev->dev_capab = msg.capability[0];
1423 dev->group_capab = msg.capability[1];
1424 }
1425
1426 if (msg.listen_channel) {
1427 os_memcpy(dev->country, msg.listen_channel, 3);
1428 dev->listen_freq = p2p_channel_to_freq(dev->country,
1429 msg.listen_channel[3],
1430 msg.listen_channel[4]);
1431 }
1432
1433 os_memcpy(dev->device_name, msg.device_name, sizeof(dev->device_name));
1434
1435 if (msg.wps_pri_dev_type)
1436 os_memcpy(dev->pri_dev_type, msg.wps_pri_dev_type,
1437 sizeof(dev->pri_dev_type));
1438
1439 p2p_parse_free(&msg);
1440
1441 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1442 "P2P: Created device entry based on Probe Req: " MACSTR
1443 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1444 MAC2STR(dev->p2p_device_addr), dev->dev_capab,
1445 dev->group_capab, dev->device_name, dev->listen_freq);
1446}
1447
1448
1449struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1450 const u8 *addr,
1451 struct p2p_message *msg)
1452{
1453 struct p2p_device *dev;
1454
1455 dev = p2p_get_device(p2p, addr);
1456 if (dev) {
1457 os_get_time(&dev->last_seen);
1458 return dev; /* already known */
1459 }
1460
1461 dev = p2p_create_device(p2p, addr);
1462 if (dev == NULL)
1463 return NULL;
1464
1465 p2p_add_dev_info(p2p, addr, dev, msg);
1466
1467 return dev;
1468}
1469
1470
1471static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1472{
1473 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1474 return 1;
1475 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1476 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1477 WPA_GET_BE16(&req_dev_type[6]) == 0)
1478 return 1; /* Category match with wildcard OUI/sub-category */
1479 return 0;
1480}
1481
1482
1483int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1484 size_t num_req_dev_type)
1485{
1486 size_t i;
1487 for (i = 0; i < num_req_dev_type; i++) {
1488 if (dev_type_match(dev_type, req_dev_type[i]))
1489 return 1;
1490 }
1491 return 0;
1492}
1493
1494
1495/**
1496 * p2p_match_dev_type - Match local device type with requested type
1497 * @p2p: P2P module context from p2p_init()
1498 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1499 * Returns: 1 on match, 0 on mismatch
1500 *
1501 * This function can be used to match the Requested Device Type attribute in
1502 * WPS IE with the local device types for deciding whether to reply to a Probe
1503 * Request frame.
1504 */
1505int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1506{
1507 struct wps_parse_attr attr;
1508 size_t i;
1509
1510 if (wps_parse_msg(wps, &attr))
1511 return 1; /* assume no Requested Device Type attributes */
1512
1513 if (attr.num_req_dev_type == 0)
1514 return 1; /* no Requested Device Type attributes -> match */
1515
1516 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1517 attr.num_req_dev_type))
1518 return 1; /* Own Primary Device Type matches */
1519
1520 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1521 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1522 attr.req_dev_type,
1523 attr.num_req_dev_type))
1524 return 1; /* Own Secondary Device Type matches */
1525
1526 /* No matching device type found */
1527 return 0;
1528}
1529
1530
1531struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1532{
1533 struct wpabuf *buf;
1534 u8 *len;
1535
1536 buf = wpabuf_alloc(1000);
1537 if (buf == NULL)
1538 return NULL;
1539
1540 /* TODO: add more info into WPS IE; maybe get from WPS module? */
1541 p2p_build_wps_ie(p2p, buf, DEV_PW_DEFAULT, 1);
1542
1543 /* P2P IE */
1544 len = p2p_buf_add_ie_hdr(buf);
1545 p2p_buf_add_capability(buf, p2p->dev_capab, 0);
1546 if (p2p->ext_listen_interval)
1547 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1548 p2p->ext_listen_interval);
1549 p2p_buf_add_device_info(buf, p2p, NULL);
1550 p2p_buf_update_ie_hdr(buf, len);
1551
1552 return buf;
1553}
1554
1555
1556static void p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *ie,
1557 size_t ie_len)
1558{
1559 struct ieee802_11_elems elems;
1560 struct wpabuf *buf;
1561 struct ieee80211_mgmt *resp;
1562 struct wpabuf *wps;
1563 struct wpabuf *ies;
1564
1565 if (!p2p->in_listen || !p2p->drv_in_listen) {
1566 /* not in Listen state - ignore Probe Request */
1567 return;
1568 }
1569
1570 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1571 ParseFailed) {
1572 /* Ignore invalid Probe Request frames */
1573 return;
1574 }
1575
1576 if (elems.p2p == NULL) {
1577 /* not a P2P probe - ignore it */
1578 return;
1579 }
1580
1581 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1582 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1583 0) {
1584 /* not using P2P Wildcard SSID - ignore */
1585 return;
1586 }
1587
1588 /* Check Requested Device Type match */
1589 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1590 if (wps && !p2p_match_dev_type(p2p, wps)) {
1591 wpabuf_free(wps);
1592 /* No match with Requested Device Type */
1593 return;
1594 }
1595 wpabuf_free(wps);
1596
1597 if (!p2p->cfg->send_probe_resp)
1598 return; /* Response generated elsewhere */
1599
1600 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1601 "P2P: Reply to P2P Probe Request in Listen state");
1602
1603 /*
1604 * We do not really have a specific BSS that this frame is advertising,
1605 * so build a frame that has some information in valid format. This is
1606 * really only used for discovery purposes, not to learn exact BSS
1607 * parameters.
1608 */
1609 ies = p2p_build_probe_resp_ies(p2p);
1610 if (ies == NULL)
1611 return;
1612
1613 buf = wpabuf_alloc(200 + wpabuf_len(ies));
1614 if (buf == NULL) {
1615 wpabuf_free(ies);
1616 return;
1617 }
1618
1619 resp = NULL;
1620 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
1621
1622 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
1623 (WLAN_FC_STYPE_PROBE_RESP << 4));
1624 os_memcpy(resp->da, addr, ETH_ALEN);
1625 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
1626 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
1627 resp->u.probe_resp.beacon_int = host_to_le16(100);
1628 /* hardware or low-level driver will setup seq_ctrl and timestamp */
1629 resp->u.probe_resp.capab_info =
1630 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
1631 WLAN_CAPABILITY_PRIVACY |
1632 WLAN_CAPABILITY_SHORT_SLOT_TIME);
1633
1634 wpabuf_put_u8(buf, WLAN_EID_SSID);
1635 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
1636 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1637
1638 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
1639 wpabuf_put_u8(buf, 8);
1640 wpabuf_put_u8(buf, (60 / 5) | 0x80);
1641 wpabuf_put_u8(buf, 90 / 5);
1642 wpabuf_put_u8(buf, (120 / 5) | 0x80);
1643 wpabuf_put_u8(buf, 180 / 5);
1644 wpabuf_put_u8(buf, (240 / 5) | 0x80);
1645 wpabuf_put_u8(buf, 360 / 5);
1646 wpabuf_put_u8(buf, 480 / 5);
1647 wpabuf_put_u8(buf, 540 / 5);
1648
1649 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
1650 wpabuf_put_u8(buf, 1);
1651 wpabuf_put_u8(buf, p2p->cfg->channel);
1652
1653 wpabuf_put_buf(buf, ies);
1654 wpabuf_free(ies);
1655
1656 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
1657
1658 wpabuf_free(buf);
1659}
1660
1661
1662int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *ie,
1663 size_t ie_len)
1664{
1665 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
1666
1667 p2p_reply_probe(p2p, addr, ie, ie_len);
1668
1669 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
1670 p2p->go_neg_peer &&
1671 os_memcmp(addr, p2p->go_neg_peer->p2p_device_addr, ETH_ALEN) == 0)
1672 {
1673 /* Received a Probe Request from GO Negotiation peer */
1674 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1675 "P2P: Found GO Negotiation peer - try to start GO "
1676 "negotiation from timeout");
1677 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
1678 return 1;
1679 }
1680
1681 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
1682 p2p->invite_peer &&
1683 os_memcmp(addr, p2p->invite_peer->p2p_device_addr, ETH_ALEN) == 0)
1684 {
1685 /* Received a Probe Request from Invite peer */
1686 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1687 "P2P: Found Invite peer - try to start Invite from "
1688 "timeout");
1689 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
1690 return 1;
1691 }
1692
1693 return 0;
1694}
1695
1696
1697static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
4c08c0bd 1698 u8 *buf, size_t len, struct wpabuf *p2p_ie)
b22128ef
JM		 1699{
1700 struct wpabuf *tmp;
1701 u8 *lpos;
1702 size_t tmplen;
1703 int res;
72044390 1704 u8 group_capab;
b22128ef 1705
4c08c0bd
JM		 1706 if (p2p_ie == NULL)
1707 return 0; /* WLAN AP is not a P2P manager */
b22128ef
JM		 1708
1709 /*
1710 * (Re)Association Request - P2P IE
1711 * P2P Capability attribute (shall be present)
4c08c0bd
JM		 1712 * P2P Interface attribute (present if concurrent device and
1713 * P2P Management is enabled)
b22128ef
JM		 1714 */
1715 tmp = wpabuf_alloc(200);
1716 if (tmp == NULL)
1717 return -1;
1718
1719 lpos = p2p_buf_add_ie_hdr(tmp);
72044390
JM		 1720 group_capab = 0;
1721 if (p2p->num_groups > 0) {
1722 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
1723 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1724 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
1725 p2p->cross_connect)
1726 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
1727 }
1728 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
4c08c0bd
JM		 1729 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1730 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
b22128ef
JM		 1731 p2p_buf_add_p2p_interface(tmp, p2p);
1732 p2p_buf_update_ie_hdr(tmp, lpos);
1733
1734 tmplen = wpabuf_len(tmp);
1735 if (tmplen > len)
1736 res = -1;
1737 else {
1738 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1739 res = tmplen;
1740 }
1741 wpabuf_free(tmp);
1742
1743 return res;
1744}
1745
1746
1747int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
4c08c0bd 1748 size_t len, int p2p_group, struct wpabuf *p2p_ie)
b22128ef
JM		 1749{
1750 struct wpabuf *tmp;
1751 u8 *lpos;
1752 struct p2p_device *peer;
1753 size_t tmplen;
1754 int res;
1755
1756 if (!p2p_group)
4c08c0bd 1757 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
b22128ef
JM		 1758
1759 /*
1760 * (Re)Association Request - P2P IE
1761 * P2P Capability attribute (shall be present)
1762 * Extended Listen Timing (may be present)
1763 * P2P Device Info attribute (shall be present)
1764 */
1765 tmp = wpabuf_alloc(200);
1766 if (tmp == NULL)
1767 return -1;
1768
1769 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
1770
1771 lpos = p2p_buf_add_ie_hdr(tmp);
1772 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
5be5305b
JM		 1773 if (p2p->ext_listen_interval)
1774 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
1775 p2p->ext_listen_interval);
b22128ef
JM		 1776 p2p_buf_add_device_info(tmp, p2p, peer);
1777 p2p_buf_update_ie_hdr(tmp, lpos);
1778
1779 tmplen = wpabuf_len(tmp);
1780 if (tmplen > len)
1781 res = -1;
1782 else {
1783 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1784 res = tmplen;
1785 }
1786 wpabuf_free(tmp);
1787
1788 return res;
1789}
1790
1791
1792int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
1793{
1794 struct wpabuf *p2p_ie;
1795 int ret;
1796
1797 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
1798 if (p2p_ie == NULL)
1799 return 0;
1800
1801 ret = p2p_attr_text(p2p_ie, buf, end);
1802 wpabuf_free(p2p_ie);
1803 return ret;
1804}
1805
1806
1807static void p2p_clear_go_neg(struct p2p_data *p2p)
1808{
1809 p2p->go_neg_peer = NULL;
1810 p2p_clear_timeout(p2p);
1811 p2p_set_state(p2p, P2P_IDLE);
1812}
1813
1814
1815void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
1816{
1817 if (p2p->go_neg_peer == NULL) {
1818 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1819 "P2P: No pending Group Formation - "
1820 "ignore WPS registration success notification");
1821 return; /* No pending Group Formation */
1822 }
1823
1824 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
1825 0) {
1826 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1827 "P2P: Ignore WPS registration success notification "
1828 "for " MACSTR " (GO Negotiation peer " MACSTR ")",
1829 MAC2STR(mac_addr),
1830 MAC2STR(p2p->go_neg_peer->intended_addr));
1831 return; /* Ignore unexpected peer address */
1832 }
1833
1834 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1835 "P2P: Group Formation completed successfully with " MACSTR,
1836 MAC2STR(mac_addr));
1837
1838 p2p_clear_go_neg(p2p);
1839}
1840
1841
1842void p2p_group_formation_failed(struct p2p_data *p2p)
1843{
1844 if (p2p->go_neg_peer == NULL) {
1845 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1846 "P2P: No pending Group Formation - "
1847 "ignore group formation failure notification");
1848 return; /* No pending Group Formation */
1849 }
1850
1851 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1852 "P2P: Group Formation failed with " MACSTR,
1853 MAC2STR(p2p->go_neg_peer->intended_addr));
1854
1855 p2p_clear_go_neg(p2p);
1856}
1857
1858
1859struct p2p_data * p2p_init(const struct p2p_config *cfg)
1860{
1861 struct p2p_data *p2p;
1862
1863 if (cfg->max_peers < 1)
1864 return NULL;
1865
1866 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
1867 if (p2p == NULL)
1868 return NULL;
1869 p2p->cfg = (struct p2p_config *) (p2p + 1);
1870 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
1871 if (cfg->dev_name)
1872 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
1873
1874 p2p->min_disc_int = 1;
1875 p2p->max_disc_int = 3;
1876
1877 os_get_random(&p2p->next_tie_breaker, 1);
1878 p2p->next_tie_breaker &= 0x01;
1879 if (cfg->sd_request)
1880 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
1881 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
1882 if (cfg->concurrent_operations)
1883 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
1884 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
1885
1886 dl_list_init(&p2p->devices);
1887
1888 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
1889 p2p_expiration_timeout, p2p, NULL);
1890
1891 return p2p;
1892}
1893
1894
1895void p2p_deinit(struct p2p_data *p2p)
1896{
1897 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
1898 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
1899 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1900 p2p_flush(p2p);
1901 os_free(p2p->cfg->dev_name);
1902 os_free(p2p->groups);
18708aad 1903 wpabuf_free(p2p->sd_resp);
3f9285ff 1904 os_free(p2p->after_scan_tx);
b22128ef
JM		 1905 os_free(p2p);
1906}
1907
1908
1909void p2p_flush(struct p2p_data *p2p)
1910{
1911 struct p2p_device *dev, *prev;
1912 p2p_clear_timeout(p2p);
1913 p2p_set_state(p2p, P2P_IDLE);
1914 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1915 p2p->go_neg_peer = NULL;
1916 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1917 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
1918 list) {
1919 dl_list_del(&dev->list);
1920 p2p_device_free(p2p, dev);
1921 }
1922 p2p_free_sd_queries(p2p);
f44ae207
JM		 1923 os_free(p2p->after_scan_tx);
1924 p2p->after_scan_tx = NULL;
b22128ef
JM		 1925}
1926
1927
9d562b79
SS		 1928int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
1929{
1930 struct p2p_device *dev;
1931
1932 dev = p2p_get_device(p2p, addr);
1933 if (dev == NULL)
1934 return -1;
1935
1936 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
1937 MAC2STR(addr));
1938
1939 if (p2p->go_neg_peer == dev)
1940 p2p->go_neg_peer = NULL;
1941
1942 dev->wps_method = WPS_NOT_READY;
1943 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1944 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1945
1946 /* Check if after_scan_tx is for this peer. If so free it */
1947 if (p2p->after_scan_tx &&
1948 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
1949 os_free(p2p->after_scan_tx);
1950 p2p->after_scan_tx = NULL;
1951 }
1952
1953 return 0;
1954}
1955
1956
b22128ef
JM		 1957int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
1958{
1959 os_free(p2p->cfg->dev_name);
1960 if (dev_name) {
1961 p2p->cfg->dev_name = os_strdup(dev_name);
1962 if (p2p->cfg->dev_name == NULL)
1963 return -1;
1964 } else
1965 p2p->cfg->dev_name = NULL;
1966 return 0;
1967}
1968
1969
1970int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
1971{
1972 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
1973 return 0;
1974}
1975
1976
1977int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
1978 size_t num_dev_types)
1979{
1980 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
1981 num_dev_types = P2P_SEC_DEVICE_TYPES;
1982 p2p->cfg->num_sec_dev_types = num_dev_types;
1983 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
1984 return 0;
1985}
1986
1987
1988int p2p_set_country(struct p2p_data *p2p, const char *country)
1989{
1990 os_memcpy(p2p->cfg->country, country, 3);
1991 return 0;
1992}
1993
1994
1995void p2p_continue_find(struct p2p_data *p2p)
1996{
1997 struct p2p_device *dev;
1998 p2p_set_state(p2p, P2P_SEARCH);
1999 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2000 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2001 if (p2p_start_sd(p2p, dev) == 0)
2002 return;
2003 else
2004 break;
10c4edde
JM		 2005 } else if (dev->req_config_methods &&
2006 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2007 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2008 "pending Provisioning Discovery Request to "
2009 MACSTR " (config methods 0x%x)",
2010 MAC2STR(dev->p2p_device_addr),
2011 dev->req_config_methods);
b22128ef
JM		 2012 if (p2p_send_prov_disc_req(p2p, dev, 0) == 0)
2013 return;
2014 }
2015 }
2016
2017 p2p_listen_in_find(p2p);
2018}
2019
2020
2021static void p2p_sd_cb(struct p2p_data *p2p, int success)
2022{
2023 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2024 "P2P: Service Discovery Query TX callback: success=%d",
2025 success);
2026 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2027
2028 if (!success) {
2029 if (p2p->sd_peer) {
2030 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2031 p2p->sd_peer = NULL;
2032 }
2033 p2p_continue_find(p2p);
2034 return;
2035 }
2036
2037 if (p2p->sd_peer == NULL) {
2038 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2039 "P2P: No SD peer entry known");
2040 p2p_continue_find(p2p);
2041 return;
2042 }
2043
2044 /* Wait for response from the peer */
2045 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2046 p2p_set_timeout(p2p, 0, 200000);
2047}
2048
2049
2050static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2051{
2052 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2053 "P2P: Provision Discovery Request TX callback: success=%d",
2054 success);
2055 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2056
2057 if (!success) {
2058 if (p2p->state != P2P_IDLE)
2059 p2p_continue_find(p2p);
2060 return;
2061 }
2062
2063 /* Wait for response from the peer */
2064 if (p2p->state == P2P_SEARCH)
2065 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2066 p2p_set_timeout(p2p, 0, 200000);
2067}
2068
2069
2070int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2071 int level, const u8 *ies, size_t ies_len)
2072{
2073 p2p_add_device(p2p, bssid, freq, level, ies, ies_len);
2074
2075 if (p2p->go_neg_peer && p2p->state == P2P_SEARCH &&
2076 os_memcmp(p2p->go_neg_peer->p2p_device_addr, bssid, ETH_ALEN) == 0)
2077 {
2078 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2079 "P2P: Found GO Negotiation peer - try to start GO "
2080 "negotiation");
2081 p2p_connect_send(p2p, p2p->go_neg_peer);
2082 return 1;
2083 }
2084
2085 return 0;
2086}
2087
2088
2089void p2p_scan_res_handled(struct p2p_data *p2p)
2090{
2091 if (!p2p->p2p_scan_running) {
2092 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2093 "running, but scan results received");
2094 }
2095 p2p->p2p_scan_running = 0;
2096 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2097
2098 if (p2p_run_after_scan(p2p))
2099 return;
2100 if (p2p->state == P2P_SEARCH)
2101 p2p_continue_find(p2p);
2102}
2103
2104
2105void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies)
2106{
2107 u8 *len = p2p_buf_add_ie_hdr(ies);
2108 p2p_buf_add_capability(ies, p2p->dev_capab, 0);
2109 if (p2p->cfg->reg_class && p2p->cfg->channel)
2110 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2111 p2p->cfg->reg_class,
2112 p2p->cfg->channel);
2113 if (p2p->ext_listen_interval)
2114 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2115 p2p->ext_listen_interval);
2116 /* TODO: p2p_buf_add_operating_channel() if GO */
2117 p2p_buf_update_ie_hdr(ies, len);
2118}
2119
2120
2121int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2122{
2123 return p2p_attr_text(p2p_ie, buf, end);
2124}
2125
2126
2127static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2128{
2129 struct p2p_device *dev = p2p->go_neg_peer;
2130
2131 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2132 "P2P: GO Negotiation Request TX callback: success=%d",
2133 success);
2134
2135 if (dev == NULL) {
2136 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2137 "P2P: No pending GO Negotiation");
2138 return;
2139 }
2140
2141 if (success) {
2142 dev->go_neg_req_sent++;
2143 if (dev->flags & P2P_DEV_USER_REJECTED) {
2144 p2p_set_state(p2p, P2P_IDLE);
2145 return;
2146 }
2147 }
2148
2149 if (!success &&
2150 (dev->dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2151 !is_zero_ether_addr(dev->member_in_go_dev)) {
2152 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2153 "P2P: Peer " MACSTR " did not acknowledge request - "
2154 "try to use device discoverability through its GO",
2155 MAC2STR(dev->p2p_device_addr));
2156 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2157 p2p_send_dev_disc_req(p2p, dev);
2158 return;
2159 }
2160
2161 /*
2162 * Use P2P find, if needed, to find the other device from its listen
2163 * channel.
2164 */
2165 p2p_set_state(p2p, P2P_CONNECT);
2166 p2p_set_timeout(p2p, 0, 100000);
2167}
2168
2169
2170static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2171{
2172 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2173 "P2P: GO Negotiation Response TX callback: success=%d",
2174 success);
2175 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2176 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2177 "P2P: Ignore TX callback event - GO Negotiation is "
2178 "not running anymore");
2179 return;
2180 }
2181 p2p_set_state(p2p, P2P_CONNECT);
2182 p2p_set_timeout(p2p, 0, 100000);
2183}
2184
2185
2186static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
2187{
2188 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2189 "P2P: GO Negotiation Response (failure) TX callback: "
2190 "success=%d", success);
fbe70272
JM		 2191 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2192 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2193 p2p->go_neg_peer->status);
2194 }
b22128ef
JM		 2195}
2196
2197
93b7ddd0
JM		 2198static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2199 enum p2p_send_action_result result)
b22128ef
JM		 2200{
2201 struct p2p_device *dev;
2202
2203 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
93b7ddd0
JM		 2204 "P2P: GO Negotiation Confirm TX callback: result=%d",
2205 result);
b22128ef 2206 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
93b7ddd0
JM		 2207 if (result == P2P_SEND_ACTION_FAILED) {
2208 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2209 return;
2210 }
2211 if (result == P2P_SEND_ACTION_NO_ACK) {
b22128ef
JM		 2212 /*
2213 * It looks like the TX status for GO Negotiation Confirm is
2214 * often showing failure even when the peer has actually
2215 * received the frame. Since the peer may change channels
2216 * immediately after having received the frame, we may not see
2217 * an Ack for retries, so just dropping a single frame may
2218 * trigger this. To allow the group formation to succeed if the
2219 * peer did indeed receive the frame, continue regardless of
2220 * the TX status.
2221 */
2222 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2223 "P2P: Assume GO Negotiation Confirm TX was actually "
2224 "received by the peer even though Ack was not "
2225 "reported");
2226 }
2227
2228 dev = p2p->go_neg_peer;
2229 if (dev == NULL)
2230 return;
2231
2232 p2p_go_complete(p2p, dev);
2233}
2234
2235
2236void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
93b7ddd0
JM		 2237 const u8 *src, const u8 *bssid,
2238 enum p2p_send_action_result result)
b22128ef
JM		 2239{
2240 enum p2p_pending_action_state state;
93b7ddd0 2241 int success;
b22128ef
JM		 2242
2243 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2244 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
93b7ddd0 2245 " src=" MACSTR " bssid=" MACSTR " result=%d",
b22128ef 2246 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
93b7ddd0
JM		 2247 MAC2STR(bssid), result);
2248 success = result == P2P_SEND_ACTION_SUCCESS;
b22128ef
JM		 2249 state = p2p->pending_action_state;
2250 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2251 switch (state) {
2252 case P2P_NO_PENDING_ACTION:
2253 break;
2254 case P2P_PENDING_GO_NEG_REQUEST:
2255 p2p_go_neg_req_cb(p2p, success);
2256 break;
2257 case P2P_PENDING_GO_NEG_RESPONSE:
2258 p2p_go_neg_resp_cb(p2p, success);
2259 break;
2260 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2261 p2p_go_neg_resp_failure_cb(p2p, success);
2262 break;
2263 case P2P_PENDING_GO_NEG_CONFIRM:
93b7ddd0 2264 p2p_go_neg_conf_cb(p2p, result);
b22128ef
JM		 2265 break;
2266 case P2P_PENDING_SD:
2267 p2p_sd_cb(p2p, success);
2268 break;
2269 case P2P_PENDING_PD:
2270 p2p_prov_disc_cb(p2p, success);
2271 break;
2272 case P2P_PENDING_INVITATION_REQUEST:
2273 p2p_invitation_req_cb(p2p, success);
2274 break;
2275 case P2P_PENDING_INVITATION_RESPONSE:
2276 p2p_invitation_resp_cb(p2p, success);
2277 break;
2278 case P2P_PENDING_DEV_DISC_REQUEST:
2279 p2p_dev_disc_req_cb(p2p, success);
2280 break;
2281 case P2P_PENDING_DEV_DISC_RESPONSE:
2282 p2p_dev_disc_resp_cb(p2p, success);
2283 break;
2284 case P2P_PENDING_GO_DISC_REQ:
2285 p2p_go_disc_req_cb(p2p, success);
2286 break;
2287 }
2288}
2289
2290
2291void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2292 unsigned int duration)
2293{
2294 if (freq == p2p->pending_client_disc_freq) {
2295 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2296 "P2P: Client discoverability remain-awake completed");
2297 p2p->pending_client_disc_freq = 0;
2298 return;
2299 }
2300
2301 if (freq != p2p->pending_listen_freq) {
2302 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2303 "P2P: Unexpected listen callback for freq=%u "
2304 "duration=%u (pending_listen_freq=%u)",
2305 freq, duration, p2p->pending_listen_freq);
2306 return;
2307 }
2308
2309 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2310 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
2311 "callback",
2312 p2p->pending_listen_sec, p2p->pending_listen_usec,
2313 p2p->pending_listen_freq);
2314 p2p->in_listen = 1;
0b8889d8 2315 p2p->drv_in_listen = freq;
b22128ef
JM		 2316 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
2317 /*
2318 * Add 20 msec extra wait to avoid race condition with driver
2319 * remain-on-channel end event, i.e., give driver more time to
2320 * complete the operation before our timeout expires.
2321 */
2322 p2p_set_timeout(p2p, p2p->pending_listen_sec,
2323 p2p->pending_listen_usec + 20000);
2324 }
2325
2326 p2p->pending_listen_freq = 0;
2327}
2328
2329
2330int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
2331{
2332 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
2333 "state (freq=%u)", freq);
2334 p2p->drv_in_listen = 0;
2335 if (p2p->in_listen)
2336 return 0; /* Internal timeout will trigger the next step */
2337
2338 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
2339 p2p_set_state(p2p, P2P_CONNECT);
2340 p2p_connect_send(p2p, p2p->go_neg_peer);
2341 return 1;
2342 } else if (p2p->state == P2P_SEARCH) {
2343 p2p_search(p2p);
2344 return 1;
2345 }
2346
2347 return 0;
2348}
2349
2350
2351static void p2p_timeout_connect(struct p2p_data *p2p)
2352{
2353 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2354 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
2355 p2p_listen_in_find(p2p);
2356}
2357
2358
2359static void p2p_timeout_connect_listen(struct p2p_data *p2p)
2360{
2361 if (p2p->go_neg_peer) {
2362 if (p2p->drv_in_listen) {
2363 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
2364 "still in Listen state; wait for it to "
2365 "complete");
2366 return;
2367 }
2368 p2p_set_state(p2p, P2P_CONNECT);
2369 p2p_connect_send(p2p, p2p->go_neg_peer);
2370 } else
2371 p2p_set_state(p2p, P2P_IDLE);
2372}
2373
2374
2375static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
2376{
2377 /*
2378 * TODO: could remain constantly in Listen state for some time if there
2379 * are no other concurrent uses for the radio. For now, go to listen
2380 * state once per second to give other uses a chance to use the radio.
2381 */
2382 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
2383 p2p_set_timeout(p2p, 1, 0);
2384}
2385
2386
2387static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
2388{
2389 struct p2p_device *dev = p2p->go_neg_peer;
2390
2391 if (dev == NULL) {
2392 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2393 "P2P: Unknown GO Neg peer - stop GO Neg wait");
2394 return;
2395 }
2396
2397 dev->wait_count++;
2398 if (dev->wait_count >= 120) {
2399 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2400 "P2P: Timeout on waiting peer to become ready for GO "
2401 "Negotiation");
2402 p2p_go_neg_failed(p2p, dev, -1);
2403 return;
2404 }
2405
2406 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2407 "P2P: Go to Listen state while waiting for the peer to become "
2408 "ready for GO Negotiation");
2409 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
2410 p2p_listen_in_find(p2p);
2411}
2412
2413
2414static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
2415{
2416 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2417 "P2P: Service Discovery Query timeout");
2418 if (p2p->sd_peer) {
2419 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2420 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2421 p2p->sd_peer = NULL;
2422 }
2423 p2p_continue_find(p2p);
2424}
2425
2426
2427static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
2428{
2429 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2430 "P2P: Provision Discovery Request timeout");
2431 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2432 p2p_continue_find(p2p);
2433}
2434
2435
2436static void p2p_timeout_invite(struct p2p_data *p2p)
2437{
2438 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2439 p2p_set_state(p2p, P2P_INVITE_LISTEN);
04d8dad5
JM		 2440 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
2441 /*
2442 * Better remain on operating channel instead of listen channel
2443 * when running a group.
2444 */
2445 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
2446 "active GO role - wait on operating channel");
2447 p2p_set_timeout(p2p, 0, 100000);
2448 return;
2449 }
b22128ef
JM		 2450 p2p_listen_in_find(p2p);
2451}
2452
2453
2454static void p2p_timeout_invite_listen(struct p2p_data *p2p)
2455{
2456 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
2457 p2p_set_state(p2p, P2P_INVITE);
2458 p2p_invite_send(p2p, p2p->invite_peer,
2459 p2p->invite_go_dev_addr);
2460 } else {
2461 if (p2p->invite_peer) {
2462 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2463 "P2P: Invitation Request retry limit reached");
2464 if (p2p->cfg->invitation_result)
2465 p2p->cfg->invitation_result(
2466 p2p->cfg->cb_ctx, -1, NULL);
2467 }
2468 p2p_set_state(p2p, P2P_IDLE);
2469 }
2470}
2471
2472
2473static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
2474{
2475 struct p2p_data *p2p = eloop_ctx;
2476
2477 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
2478 p2p_state_txt(p2p->state));
2479
2480 p2p->in_listen = 0;
2481
2482 switch (p2p->state) {
2483 case P2P_IDLE:
2484 break;
2485 case P2P_SEARCH:
2486 p2p_search(p2p);
2487 break;
2488 case P2P_CONNECT:
2489 p2p_timeout_connect(p2p);
2490 break;
2491 case P2P_CONNECT_LISTEN:
2492 p2p_timeout_connect_listen(p2p);
2493 break;
2494 case P2P_GO_NEG:
2495 break;
2496 case P2P_LISTEN_ONLY:
2497 if (p2p->ext_listen_only) {
2498 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2499 "P2P: Extended Listen Timing - Listen State "
2500 "completed");
2501 p2p->ext_listen_only = 0;
2502 p2p_set_state(p2p, P2P_IDLE);
2503 }
2504 break;
2505 case P2P_WAIT_PEER_CONNECT:
2506 p2p_timeout_wait_peer_connect(p2p);
2507 break;
2508 case P2P_WAIT_PEER_IDLE:
2509 p2p_timeout_wait_peer_idle(p2p);
2510 break;
2511 case P2P_SD_DURING_FIND:
2512 p2p_timeout_sd_during_find(p2p);
2513 break;
2514 case P2P_PROVISIONING:
2515 break;
2516 case P2P_PD_DURING_FIND:
2517 p2p_timeout_prov_disc_during_find(p2p);
2518 break;
2519 case P2P_INVITE:
2520 p2p_timeout_invite(p2p);
2521 break;
2522 case P2P_INVITE_LISTEN:
2523 p2p_timeout_invite_listen(p2p);
2524 break;
2525 }
2526}
2527
2528
2529int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
2530{
2531 struct p2p_device *dev;
2532
2533 dev = p2p_get_device(p2p, peer_addr);
2534 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
2535 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
2536 if (dev == NULL) {
2537 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
2538 " unknown", MAC2STR(peer_addr));
2539 return -1;
2540 }
2541 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
2542 dev->flags |= P2P_DEV_USER_REJECTED;
2543 return 0;
2544}
2545
2546
2547static const char * p2p_wps_method_text(enum p2p_wps_method method)
2548{
2549 switch (method) {
2550 case WPS_NOT_READY:
2551 return "not-ready";
2552 case WPS_PIN_LABEL:
2553 return "Label";
2554 case WPS_PIN_DISPLAY:
2555 return "Display";
2556 case WPS_PIN_KEYPAD:
2557 return "Keypad";
2558 case WPS_PBC:
2559 return "PBC";
2560 }
2561
2562 return "??";
2563}
2564
2565
2566static const char * p2p_go_state_text(enum p2p_go_state go_state)
2567{
2568 switch (go_state) {
2569 case UNKNOWN_GO:
2570 return "unknown";
2571 case LOCAL_GO:
2572 return "local";
2573 case REMOTE_GO:
2574 return "remote";
2575 }
2576
2577 return "??";
2578}
2579
2580
2581int p2p_get_peer_info(struct p2p_data *p2p, const u8 *addr, int next,
2582 char *buf, size_t buflen)
2583{
2584 struct p2p_device *dev;
2585 int res;
2586 char *pos, *end;
2587 struct os_time now;
2588 char devtype[WPS_DEV_TYPE_BUFSIZE];
2589
2590 if (addr)
2591 dev = p2p_get_device(p2p, addr);
2592 else
2593 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
2594
2595 if (dev && next) {
2596 dev = dl_list_first(&dev->list, struct p2p_device, list);
2597 if (&dev->list == &p2p->devices)
2598 dev = NULL;
2599 }
2600
2601 if (dev == NULL)
2602 return -1;
2603
2604 pos = buf;
2605 end = buf + buflen;
2606
2607 res = os_snprintf(pos, end - pos, MACSTR "\n",
2608 MAC2STR(dev->p2p_device_addr));
2609 if (res < 0 || res >= end - pos)
2610 return pos - buf;
2611 pos += res;
2612
2613 os_get_time(&now);
2614 res = os_snprintf(pos, end - pos,
2615 "age=%d\n"
2616 "listen_freq=%d\n"
2617 "level=%d\n"
2618 "wps_method=%s\n"
2619 "interface_addr=" MACSTR "\n"
2620 "member_in_go_dev=" MACSTR "\n"
2621 "member_in_go_iface=" MACSTR "\n"
2622 "pri_dev_type=%s\n"
2623 "device_name=%s\n"
2624 "config_methods=0x%x\n"
2625 "dev_capab=0x%x\n"
2626 "group_capab=0x%x\n"
2627 "go_neg_req_sent=%d\n"
2628 "go_state=%s\n"
2629 "dialog_token=%u\n"
2630 "intended_addr=" MACSTR "\n"
2631 "country=%c%c\n"
2632 "oper_freq=%d\n"
2633 "req_config_methods=0x%x\n"
10c4edde 2634 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
b22128ef
JM		 2635 "status=%d\n"
2636 "wait_count=%u\n"
2637 "invitation_reqs=%u\n",
2638 (int) (now.sec - dev->last_seen.sec),
2639 dev->listen_freq,
2640 dev->level,
2641 p2p_wps_method_text(dev->wps_method),
2642 MAC2STR(dev->interface_addr),
2643 MAC2STR(dev->member_in_go_dev),
2644 MAC2STR(dev->member_in_go_iface),
2645 wps_dev_type_bin2str(dev->pri_dev_type,
2646 devtype, sizeof(devtype)),
2647 dev->device_name,
2648 dev->config_methods,
2649 dev->dev_capab,
2650 dev->group_capab,
2651 dev->go_neg_req_sent,
2652 p2p_go_state_text(dev->go_state),
2653 dev->dialog_token,
2654 MAC2STR(dev->intended_addr),
2655 dev->country[0] ? dev->country[0] : '_',
2656 dev->country[1] ? dev->country[1] : '_',
2657 dev->oper_freq,
2658 dev->req_config_methods,
2659 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
2660 "[PROBE_REQ_ONLY]" : "",
2661 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
2662 dev->flags & P2P_DEV_NOT_YET_READY ?
2663 "[NOT_YET_READY]" : "",
2664 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
2665 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
2666 "",
2667 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
2668 "[PD_PEER_DISPLAY]" : "",
2669 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
2670 "[PD_PEER_KEYPAD]" : "",
2671 dev->flags & P2P_DEV_USER_REJECTED ?
2672 "[USER_REJECTED]" : "",
2673 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
2674 "[PEER_WAITING_RESPONSE]" : "",
2675 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
2676 "[PREFER_PERSISTENT_GROUP]" : "",
2677 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
2678 "[WAIT_GO_NEG_RESPONSE]" : "",
2679 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
2680 "[WAIT_GO_NEG_CONFIRM]" : "",
2681 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
2682 "[GROUP_CLIENT_ONLY]" : "",
d5b20a73 2683 dev->flags & P2P_DEV_FORCE_FREQ ?
10c4edde
JM		 2684 "[FORCE_FREQ]" : "",
2685 dev->flags & P2P_DEV_PD_FOR_JOIN ?
2686 "[PD_FOR_JOIN]" : "",
b22128ef
JM		 2687 dev->status,
2688 dev->wait_count,
2689 dev->invitation_reqs);
2690 if (res < 0 || res >= end - pos)
2691 return pos - buf;
2692 pos += res;
2693
2694 if (dev->ext_listen_period) {
2695 res = os_snprintf(pos, end - pos,
2696 "ext_listen_period=%u\n"
2697 "ext_listen_interval=%u\n",
2698 dev->ext_listen_period,
2699 dev->ext_listen_interval);
2700 if (res < 0 || res >= end - pos)
2701 return pos - buf;
2702 pos += res;
2703 }
2704
2705 if (dev->oper_ssid_len) {
2706 res = os_snprintf(pos, end - pos,
2707 "oper_ssid=%s\n",
2708 wpa_ssid_txt(dev->oper_ssid,
2709 dev->oper_ssid_len));
2710 if (res < 0 || res >= end - pos)
2711 return pos - buf;
2712 pos += res;
2713 }
2714
2715 return pos - buf;
2716}
2717
2718
2719void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
2720{
2721 if (enabled) {
2722 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
2723 "discoverability enabled");
2724 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2725 } else {
2726 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
2727 "discoverability disabled");
2728 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2729 }
2730}
2731
2732
2733static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
2734 u32 duration2, u32 interval2)
2735{
2736 struct wpabuf *req;
2737 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
2738 u8 *len;
2739
2740 req = wpabuf_alloc(100);
2741 if (req == NULL)
2742 return NULL;
2743
2744 if (duration1 || interval1) {
2745 os_memset(&desc1, 0, sizeof(desc1));
2746 desc1.count_type = 1;
2747 desc1.duration = duration1;
2748 desc1.interval = interval1;
2749 ptr1 = &desc1;
2750
2751 if (duration2 || interval2) {
2752 os_memset(&desc2, 0, sizeof(desc2));
2753 desc2.count_type = 2;
2754 desc2.duration = duration2;
2755 desc2.interval = interval2;
2756 ptr2 = &desc2;
2757 }
2758 }
2759
2760 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
2761 len = p2p_buf_add_ie_hdr(req);
2762 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
2763 p2p_buf_update_ie_hdr(req, len);
2764
2765 return req;
2766}
2767
2768
2769int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
2770 const u8 *own_interface_addr, unsigned int freq,
2771 u32 duration1, u32 interval1, u32 duration2,
2772 u32 interval2)
2773{
2774 struct wpabuf *req;
2775
2776 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
2777 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
2778 "int1=%u dur2=%u int2=%u",
2779 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
2780 freq, duration1, interval1, duration2, interval2);
2781
2782 req = p2p_build_presence_req(duration1, interval1, duration2,
2783 interval2);
2784 if (req == NULL)
2785 return -1;
2786
2787 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3f9285ff
JM		 2788 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
2789 go_interface_addr,
2790 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
b22128ef
JM		 2791 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2792 "P2P: Failed to send Action frame");
2793 }
2794 wpabuf_free(req);
2795
2796 return 0;
2797}
2798
2799
2800static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
2801 size_t noa_len, u8 dialog_token)
2802{
2803 struct wpabuf *resp;
2804 u8 *len;
2805
2806 resp = wpabuf_alloc(100 + noa_len);
2807 if (resp == NULL)
2808 return NULL;
2809
2810 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
2811 len = p2p_buf_add_ie_hdr(resp);
2812 p2p_buf_add_status(resp, status);
2813 if (noa) {
2814 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
2815 wpabuf_put_le16(resp, noa_len);
2816 wpabuf_put_data(resp, noa, noa_len);
2817 } else
2818 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
2819 p2p_buf_update_ie_hdr(resp, len);
2820
2821 return resp;
2822}
2823
2824
2825static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
2826 const u8 *sa, const u8 *data, size_t len,
2827 int rx_freq)
2828{
2829 struct p2p_message msg;
2830 u8 status;
2831 struct wpabuf *resp;
2832 size_t g;
2833 struct p2p_group *group = NULL;
2834 int parsed = 0;
2835 u8 noa[50];
2836 int noa_len;
2837
2838 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2839 "P2P: Received P2P Action - P2P Presence Request");
2840
2841 for (g = 0; g < p2p->num_groups; g++) {
2842 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
2843 ETH_ALEN) == 0) {
2844 group = p2p->groups[g];
2845 break;
2846 }
2847 }
2848 if (group == NULL) {
2849 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2850 "P2P: Ignore P2P Presence Request for unknown group "
2851 MACSTR, MAC2STR(da));
2852 return;
2853 }
2854
2855 if (p2p_parse(data, len, &msg) < 0) {
2856 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2857 "P2P: Failed to parse P2P Presence Request");
2858 status = P2P_SC_FAIL_INVALID_PARAMS;
2859 goto fail;
2860 }
2861 parsed = 1;
2862
2863 if (msg.noa == NULL) {
2864 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2865 "P2P: No NoA attribute in P2P Presence Request");
2866 status = P2P_SC_FAIL_INVALID_PARAMS;
2867 goto fail;
2868 }
2869
2870 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
2871
2872fail:
2873 if (p2p->cfg->get_noa)
2874 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
2875 sizeof(noa));
2876 else
2877 noa_len = -1;
2878 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
2879 noa_len > 0 ? noa_len : 0,
2880 msg.dialog_token);
2881 if (parsed)
2882 p2p_parse_free(&msg);
2883 if (resp == NULL)
2884 return;
2885
2886 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3f9285ff
JM		 2887 if (p2p_send_action(p2p, rx_freq, sa, da, da,
2888 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
b22128ef
JM		 2889 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2890 "P2P: Failed to send Action frame");
2891 }
2892 wpabuf_free(resp);
2893}
2894
2895
2896static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
2897 const u8 *sa, const u8 *data, size_t len)
2898{
2899 struct p2p_message msg;
2900
2901 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2902 "P2P: Received P2P Action - P2P Presence Response");
2903
2904 if (p2p_parse(data, len, &msg) < 0) {
2905 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2906 "P2P: Failed to parse P2P Presence Response");
2907 return;
2908 }
2909
2910 if (msg.status == NULL || msg.noa == NULL) {
2911 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2912 "P2P: No Status or NoA attribute in P2P Presence "
2913 "Response");
2914 p2p_parse_free(&msg);
2915 return;
2916 }
2917
2918 if (*msg.status) {
2919 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2920 "P2P: P2P Presence Request was rejected: status %u",
2921 *msg.status);
2922 p2p_parse_free(&msg);
2923 return;
2924 }
2925
2926 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2927 "P2P: P2P Presence Request was accepted");
2928 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
2929 msg.noa, msg.noa_len);
2930 /* TODO: process NoA */
2931 p2p_parse_free(&msg);
2932}
2933
2934
2935static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
2936{
2937 struct p2p_data *p2p = eloop_ctx;
2938
2939 if (p2p->ext_listen_interval) {
2940 /* Schedule next extended listen timeout */
2941 eloop_register_timeout(p2p->ext_listen_interval_sec,
2942 p2p->ext_listen_interval_usec,
2943 p2p_ext_listen_timeout, p2p, NULL);
2944 }
2945
f7a69057
JM		 2946 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
2947 /*
2948 * This should not really happen, but it looks like the Listen
2949 * command may fail is something else (e.g., a scan) was
2950 * running at an inconvenient time. As a workaround, allow new
2951 * Extended Listen operation to be started.
2952 */
2953 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
2954 "Extended Listen operation had not been completed - "
2955 "try again");
2956 p2p->ext_listen_only = 0;
2957 p2p_set_state(p2p, P2P_IDLE);
2958 }
2959
b22128ef
JM		 2960 if (p2p->state != P2P_IDLE) {
2961 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
2962 "Listen timeout in active state (%s)",
2963 p2p_state_txt(p2p->state));
2964 return;
2965 }
2966
2967 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
2968 p2p->ext_listen_only = 1;
2969 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
2970 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
2971 "Listen state for Extended Listen Timing");
2972 p2p->ext_listen_only = 0;
2973 }
2974}
2975
2976
2977int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
2978 unsigned int interval)
2979{
2980 if (period > 65535 || interval > 65535 || period > interval ||
2981 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
2982 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2983 "P2P: Invalid Extended Listen Timing request: "
2984 "period=%u interval=%u", period, interval);
2985 return -1;
2986 }
2987
2988 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2989
2990 if (interval == 0) {
2991 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2992 "P2P: Disabling Extended Listen Timing");
2993 p2p->ext_listen_period = 0;
2994 p2p->ext_listen_interval = 0;
2995 return 0;
2996 }
2997
2998 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2999 "P2P: Enabling Extended Listen Timing: period %u msec, "
3000 "interval %u msec", period, interval);
3001 p2p->ext_listen_period = period;
3002 p2p->ext_listen_interval = interval;
3003 p2p->ext_listen_interval_sec = interval / 1000;
3004 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3005
3006 eloop_register_timeout(p2p->ext_listen_interval_sec,
3007 p2p->ext_listen_interval_usec,
3008 p2p_ext_listen_timeout, p2p, NULL);
3009
3010 return 0;
3011}
3012
3013
3014void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3015 const u8 *ie, size_t ie_len)
3016{
3017 struct p2p_message msg;
3018
3019 if (bssid == NULL || ie == NULL)
3020 return;
3021
3022 os_memset(&msg, 0, sizeof(msg));
3023 if (p2p_parse_ies(ie, ie_len, &msg))
3024 return;
3025 if (msg.minor_reason_code == NULL)
3026 return;
3027
3028 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3029 "P2P: Deauthentication notification BSSID " MACSTR
3030 " reason_code=%u minor_reason_code=%u",
3031 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3032
3033 p2p_parse_free(&msg);
3034}
3035
3036
3037void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3038 const u8 *ie, size_t ie_len)
3039{
3040 struct p2p_message msg;
3041
3042 if (bssid == NULL || ie == NULL)
3043 return;
3044
3045 os_memset(&msg, 0, sizeof(msg));
3046 if (p2p_parse_ies(ie, ie_len, &msg))
3047 return;
3048 if (msg.minor_reason_code == NULL)
3049 return;
3050
3051 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3052 "P2P: Disassociation notification BSSID " MACSTR
3053 " reason_code=%u minor_reason_code=%u",
3054 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3055
3056 p2p_parse_free(&msg);
3057}
3058
3059
3060void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3061{
3062 if (enabled) {
3063 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3064 "Device operations enabled");
3065 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3066 } else {
3067 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3068 "Device operations disabled");
3069 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3070 }
3071}
3072
3073
3074int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3075{
3076 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
3077 return -1;
3078
3079 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
3080 "reg_class %u channel %u", reg_class, channel);
3081 p2p->cfg->reg_class = reg_class;
3082 p2p->cfg->channel = channel;
3083
3084 return 0;
3085}
3086
3087
3088int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3089{
3090 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
3091 if (postfix == NULL) {
3092 p2p->cfg->ssid_postfix_len = 0;
3093 return 0;
3094 }
3095 if (len > sizeof(p2p->cfg->ssid_postfix))
3096 return -1;
3097 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3098 p2p->cfg->ssid_postfix_len = len;
3099 return 0;
3100}
3101
3102
3103int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3104 u8 *iface_addr)
3105{
3106 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3107 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3108 return -1;
3109 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3110 return 0;
3111}
80c9582a
JM		 3112
3113
4147a2cc
JM		 3114int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3115 u8 *dev_addr)
3116{
3117 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3118 if (dev == NULL)
3119 return -1;
3120 os_memcpy(dev_addr, dev->p2p_device_addr, ETH_ALEN);
3121 return 0;
3122}
3123
3124
80c9582a
JM		 3125void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3126{
3127 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
3128 if (is_zero_ether_addr(p2p->peer_filter))
3129 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
3130 "filter");
3131 else
3132 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
3133 "filter for " MACSTR, MAC2STR(p2p->peer_filter));
3134}
72044390
JM		 3135
3136
3137void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
3138{
3139 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
3140 enabled ? "enabled" : "disabled");
3141 if (p2p->cross_connect == enabled)
3142 return;
3143 p2p->cross_connect = enabled;
3144 /* TODO: may need to tear down any action group where we are GO(?) */
3145}
f8d0131a
JM		 3146
3147
3148int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
3149{
3150 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3151 if (dev == NULL)
3152 return -1;
3153 if (dev->oper_freq <= 0)
3154 return -1;
3155 return dev->oper_freq;
3156}
0f66abd2
SS		 3157
3158
3159void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
3160{
3161 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
3162 enabled ? "enabled" : "disabled");
3163 p2p->cfg->p2p_intra_bss = enabled;
3164}
b5c9da8d
JM		 3165
3166
3167void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
3168{
3169 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
3170 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
3171}
3f9285ff
JM		 3172
3173
3174int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3175 const u8 *src, const u8 *bssid, const u8 *buf,
3176 size_t len, unsigned int wait_time)
3177{
3178 if (p2p->p2p_scan_running) {
3179 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
3180 "frame TX until p2p_scan completes");
3181 if (p2p->after_scan_tx) {
3182 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
3183 "previous pending Action frame TX");
3184 os_free(p2p->after_scan_tx);
3185 }
3186 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
3187 len);
3188 if (p2p->after_scan_tx == NULL)
3189 return -1;
3190 p2p->after_scan_tx->freq = freq;
3191 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
3192 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
3193 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
3194 p2p->after_scan_tx->len = len;
3195 p2p->after_scan_tx->wait_time = wait_time;
3196 os_memcpy(p2p->after_scan_tx + 1, buf, len);
3197 return 0;
3198 }
3199
3200 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
3201 buf, len, wait_time);
3202}
7cfc4ac3
AGS		 3203
3204
3205void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
3206 int freq_overall)
3207{
3208 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
3209 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall);
3210 p2p->best_freq_24 = freq_24;
3211 p2p->best_freq_5 = freq_5;
3212 p2p->best_freq_overall = freq_overall;
3213}
231bbd03
SS		 3214
3215
3216const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
3217{
3218 if (p2p == NULL || p2p->go_neg_peer == NULL)
3219 return NULL;
3220 return p2p->go_neg_peer->p2p_device_addr;
3221}
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