2 * Wi-Fi Direct - P2P module
3 * Copyright (c) 2009-2010, Atheros Communications
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.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
19 #include "common/ieee802_11_defs.h"
20 #include "common/ieee802_11_common.h"
21 #include "wps/wps_i.h"
26 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
27 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
28 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
29 const u8 *sa, const u8 *data, size_t len,
31 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
32 const u8 *sa, const u8 *data,
34 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
35 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
39 * p2p_scan recovery timeout
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.
44 #define P2P_SCAN_TIMEOUT 35
47 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
48 * entries will be removed
50 #define P2P_PEER_EXPIRATION_AGE 300
52 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
54 static void p2p_expire_peers(struct p2p_data *p2p)
56 struct p2p_device *dev, *n;
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)
63 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer "
64 "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr));
65 dl_list_del(&dev->list);
66 p2p_device_free(p2p, dev);
71 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
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);
80 static const char * p2p_state_txt(int state)
89 case P2P_CONNECT_LISTEN:
90 return "CONNECT_LISTEN";
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";
107 case P2P_INVITE_LISTEN:
108 return "INVITE_LISTEN";
115 void p2p_set_state(struct p2p_data *p2p, int new_state)
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;
123 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
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);
133 void p2p_clear_timeout(struct p2p_data *p2p)
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);
141 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
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;
149 os_memset(&res, 0, sizeof(res));
152 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
154 os_memcpy(res.peer_interface_addr, peer->intended_addr,
157 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
161 static void p2p_listen_in_find(struct p2p_data *p2p)
167 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
168 "P2P: Starting short listen state (state=%s)",
169 p2p_state_txt(p2p->state));
171 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
174 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
175 "P2P: Unknown regulatory class/channel");
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;
183 p2p->pending_listen_freq = freq;
184 p2p->pending_listen_sec = 0;
185 p2p->pending_listen_usec = 1024 * tu;
187 ies = p2p_build_probe_resp_ies(p2p);
191 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
193 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
194 "P2P: Failed to start listen mode");
195 p2p->pending_listen_freq = 0;
201 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
206 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
207 "P2P: Going to listen(only) state");
209 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
212 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
213 "P2P: Unknown regulatory class/channel");
217 p2p->pending_listen_freq = freq;
218 p2p->pending_listen_sec = timeout / 1000;
219 p2p->pending_listen_usec = (timeout % 1000) * 1000;
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;
228 ies = p2p_build_probe_resp_ies(p2p);
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;
241 p2p_set_state(p2p, P2P_LISTEN_ONLY);
247 static void p2p_device_clear_reported(struct p2p_data *p2p)
249 struct p2p_device *dev;
250 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
251 dev->flags &= ~P2P_DEV_REPORTED;
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
261 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
263 struct p2p_device *dev;
264 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
265 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
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
278 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
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)
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
296 * If there is already an entry for the peer, it will be returned instead of
297 * creating a new one.
299 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
302 struct p2p_device *dev, *oldest = NULL;
305 dev = p2p_get_device(p2p, addr);
309 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
311 if (oldest == NULL ||
312 os_time_before(&dev->last_seen, &oldest->last_seen))
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 "
319 dl_list_del(&oldest->list);
320 p2p_device_free(p2p, oldest);
323 dev = os_zalloc(sizeof(*dev));
326 dl_list_add(&p2p->devices, &dev->list);
327 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
333 static void p2p_copy_client_info(struct p2p_device *dev,
334 struct p2p_client_info *cli)
336 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
337 dev->info.device_name[cli->dev_name_len] = '\0';
338 dev->info.dev_capab = cli->dev_capab;
339 dev->info.config_methods = cli->config_methods;
340 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
341 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
342 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
343 dev->info.wps_sec_dev_type_list_len);
347 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
348 const u8 *go_interface_addr, int freq,
349 const u8 *gi, size_t gi_len)
351 struct p2p_group_info info;
353 struct p2p_device *dev;
358 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
362 * Clear old data for this group; if the devices are still in the
363 * group, the information will be restored in the loop following this.
365 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
366 if (os_memcpy(dev->member_in_go_iface, go_interface_addr,
368 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
369 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
373 for (c = 0; c < info.num_clients; c++) {
374 struct p2p_client_info *cli = &info.client[c];
375 dev = p2p_get_device(p2p, cli->p2p_device_addr);
378 * Update information only if we have not received this
379 * directly from the client.
381 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
382 P2P_DEV_PROBE_REQ_ONLY))
383 p2p_copy_client_info(dev, cli);
384 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
385 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
388 dev = p2p_create_device(p2p, cli->p2p_device_addr);
391 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
392 p2p_copy_client_info(dev, cli);
393 dev->oper_freq = freq;
394 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
395 dev->info.p2p_device_addr,
397 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
400 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
402 os_get_time(&dev->last_seen);
403 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
404 os_memcpy(dev->member_in_go_iface, go_interface_addr,
412 static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req,
413 const struct p2p_message *msg)
415 os_memcpy(dev->info.device_name, msg->device_name,
416 sizeof(dev->info.device_name));
418 if (msg->manufacturer &&
419 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
420 os_memset(dev->info.manufacturer, 0,
421 sizeof(dev->info.manufacturer));
422 os_memcpy(dev->info.manufacturer, msg->manufacturer,
423 msg->manufacturer_len);
426 if (msg->model_name &&
427 msg->model_name_len < sizeof(dev->info.model_name)) {
428 os_memset(dev->info.model_name, 0,
429 sizeof(dev->info.model_name));
430 os_memcpy(dev->info.model_name, msg->model_name,
431 msg->model_name_len);
434 if (msg->model_number &&
435 msg->model_number_len < sizeof(dev->info.model_number)) {
436 os_memset(dev->info.model_number, 0,
437 sizeof(dev->info.model_number));
438 os_memcpy(dev->info.model_number, msg->model_number,
439 msg->model_number_len);
442 if (msg->serial_number &&
443 msg->serial_number_len < sizeof(dev->info.serial_number)) {
444 os_memset(dev->info.serial_number, 0,
445 sizeof(dev->info.serial_number));
446 os_memcpy(dev->info.serial_number, msg->serial_number,
447 msg->serial_number_len);
450 if (msg->pri_dev_type)
451 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
452 sizeof(dev->info.pri_dev_type));
453 else if (msg->wps_pri_dev_type)
454 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
455 sizeof(dev->info.pri_dev_type));
457 if (msg->wps_sec_dev_type_list) {
458 os_memcpy(dev->info.wps_sec_dev_type_list,
459 msg->wps_sec_dev_type_list,
460 msg->wps_sec_dev_type_list_len);
461 dev->info.wps_sec_dev_type_list_len =
462 msg->wps_sec_dev_type_list_len;
465 if (msg->capability) {
466 dev->info.dev_capab = msg->capability[0];
467 dev->info.group_capab = msg->capability[1];
470 if (msg->ext_listen_timing) {
471 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
472 dev->ext_listen_interval =
473 WPA_GET_LE16(msg->ext_listen_timing + 2);
477 dev->info.config_methods = msg->config_methods ?
478 msg->config_methods : msg->wps_config_methods;
484 * p2p_add_device - Add peer entries based on scan results
485 * @p2p: P2P module context from p2p_init()
486 * @addr: Source address of Beacon or Probe Response frame (may be either
487 * P2P Device Address or P2P Interface Address)
488 * @level: Signal level (signal strength of the received frame from the peer)
489 * @freq: Frequency on which the Beacon or Probe Response frame was received
490 * @ies: IEs from the Beacon or Probe Response frame
491 * @ies_len: Length of ies buffer in octets
492 * Returns: 0 on success, -1 on failure
494 * If the scan result is for a GO, the clients in the group will also be added
495 * to the peer table. This function can also be used with some other frames
496 * like Provision Discovery Request that contains P2P Capability and P2P Device
499 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
500 const u8 *ies, size_t ies_len)
502 struct p2p_device *dev;
503 struct p2p_message msg;
504 const u8 *p2p_dev_addr;
507 os_memset(&msg, 0, sizeof(msg));
508 if (p2p_parse_ies(ies, ies_len, &msg)) {
509 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
510 "P2P: Failed to parse P2P IE for a device entry");
511 p2p_parse_free(&msg);
515 if (msg.p2p_device_addr)
516 p2p_dev_addr = msg.p2p_device_addr;
517 else if (msg.device_id)
518 p2p_dev_addr = msg.device_id;
520 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
521 "P2P: Ignore scan data without P2P Device Info or "
523 p2p_parse_free(&msg);
527 if (!is_zero_ether_addr(p2p->peer_filter) &&
528 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
529 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
530 "filter for " MACSTR " due to peer filter",
531 MAC2STR(p2p_dev_addr));
535 dev = p2p_create_device(p2p, p2p_dev_addr);
537 p2p_parse_free(&msg);
540 os_get_time(&dev->last_seen);
541 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
543 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
544 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
546 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
547 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
549 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
550 dev->oper_ssid_len = msg.ssid[1];
553 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
554 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
556 if (*msg.ds_params == 14)
559 ds_freq = 2407 + *msg.ds_params * 5;
560 if (freq != ds_freq) {
561 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
562 "P2P: Update Listen frequency based on DS "
563 "Parameter Set IE: %d -> %d MHz",
569 if (dev->listen_freq && dev->listen_freq != freq) {
570 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
571 "P2P: Update Listen frequency based on scan "
572 "results (" MACSTR " %d -> %d MHz (DS param %d)",
573 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
574 freq, msg.ds_params ? *msg.ds_params : -1);
576 dev->listen_freq = freq;
578 dev->oper_freq = freq;
581 p2p_copy_wps_info(dev, 0, &msg);
583 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
584 wpabuf_free(dev->info.wps_vendor_ext[i]);
585 dev->info.wps_vendor_ext[i] = NULL;
588 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
589 if (msg.wps_vendor_ext[i] == NULL)
591 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
592 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
593 if (dev->info.wps_vendor_ext[i] == NULL)
597 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, msg.group_info,
600 p2p_parse_free(&msg);
602 if (p2p_pending_sd_req(p2p, dev))
603 dev->flags |= P2P_DEV_SD_SCHEDULE;
605 if (dev->flags & P2P_DEV_REPORTED)
608 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
609 "P2P: Peer found with Listen frequency %d MHz", freq);
610 if (dev->flags & P2P_DEV_USER_REJECTED) {
611 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
612 "P2P: Do not report rejected device");
616 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
617 !(dev->flags & P2P_DEV_REPORTED_ONCE));
618 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
624 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
628 if (p2p->go_neg_peer == dev)
629 p2p->go_neg_peer = NULL;
630 if (p2p->invite_peer == dev)
631 p2p->invite_peer = NULL;
632 if (p2p->sd_peer == dev)
634 if (p2p->pending_client_disc_go == dev)
635 p2p->pending_client_disc_go = NULL;
637 p2p->cfg->dev_lost(p2p->cfg->cb_ctx, dev->info.p2p_device_addr);
639 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
640 wpabuf_free(dev->info.wps_vendor_ext[i]);
641 dev->info.wps_vendor_ext[i] = NULL;
648 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
650 struct p2p_channels *c;
651 struct p2p_reg_class *cla;
658 c = &p2p->cfg->channels;
659 for (cl = 0; cl < c->reg_classes; cl++) {
660 cla = &c->reg_class[cl];
661 if (cla->reg_class != p2p->last_prog_scan_class)
663 for (ch = 0; ch < cla->channels; ch++) {
664 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
674 /* Start from beginning */
675 reg_class = c->reg_class[0].reg_class;
676 channel = c->reg_class[0].channel[0];
678 /* Pick the next channel */
680 if (ch == cla->channels) {
682 if (cl == c->reg_classes)
686 reg_class = c->reg_class[cl].reg_class;
687 channel = c->reg_class[cl].channel[ch];
690 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
691 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
692 "channel: reg_class %u channel %u -> %d MHz",
693 reg_class, channel, freq);
694 p2p->last_prog_scan_class = reg_class;
695 p2p->last_prog_scan_chan = channel;
697 if (freq == 2412 || freq == 2437 || freq == 2462)
698 return 0; /* No need to add social channels */
703 static void p2p_search(struct p2p_data *p2p)
706 enum p2p_scan_type type;
708 if (p2p->drv_in_listen) {
709 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
710 "in Listen state - wait for it to end before "
714 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
716 if (p2p->go_neg_peer) {
718 * Only scan the known listen frequency of the peer
719 * during GO Negotiation start.
721 freq = p2p->go_neg_peer->listen_freq;
723 freq = p2p->go_neg_peer->oper_freq;
724 type = P2P_SCAN_SPECIFIC;
725 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
726 "for freq %u (GO Neg)", freq);
727 } else if (p2p->invite_peer) {
729 * Only scan the known listen frequency of the peer
730 * during Invite start.
732 freq = p2p->invite_peer->listen_freq;
734 freq = p2p->invite_peer->oper_freq;
735 type = P2P_SCAN_SPECIFIC;
736 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
737 "for freq %u (Invite)", freq);
738 } else if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
739 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
740 type = P2P_SCAN_SOCIAL_PLUS_ONE;
741 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
742 "(+ freq %u)", freq);
744 type = P2P_SCAN_SOCIAL;
745 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
748 if (p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
749 p2p->num_req_dev_types, p2p->req_dev_types) < 0)
751 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
752 "P2P: Scan request failed");
753 p2p_continue_find(p2p);
755 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
756 p2p->p2p_scan_running = 1;
757 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
758 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
764 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
766 struct p2p_data *p2p = eloop_ctx;
767 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
772 static int p2p_run_after_scan(struct p2p_data *p2p)
774 struct p2p_device *dev;
775 enum p2p_after_scan op;
777 if (p2p->after_scan_tx) {
779 /* TODO: schedule p2p_run_after_scan to be called from TX
780 * status callback(?) */
781 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
782 "Action frame at p2p_scan completion");
783 ret = p2p->cfg->send_action(p2p->cfg->cb_ctx,
784 p2p->after_scan_tx->freq,
785 p2p->after_scan_tx->dst,
786 p2p->after_scan_tx->src,
787 p2p->after_scan_tx->bssid,
788 (u8 *) (p2p->after_scan_tx + 1),
789 p2p->after_scan_tx->len,
790 p2p->after_scan_tx->wait_time);
791 os_free(p2p->after_scan_tx);
792 p2p->after_scan_tx = NULL;
796 op = p2p->start_after_scan;
797 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
799 case P2P_AFTER_SCAN_NOTHING:
801 case P2P_AFTER_SCAN_LISTEN:
802 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
803 "requested Listen state");
804 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
805 p2p->pending_listen_usec / 1000);
807 case P2P_AFTER_SCAN_CONNECT:
808 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
809 "requested connect with " MACSTR,
810 MAC2STR(p2p->after_scan_peer));
811 dev = p2p_get_device(p2p, p2p->after_scan_peer);
813 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
817 p2p_connect_send(p2p, dev);
825 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
827 struct p2p_data *p2p = eloop_ctx;
829 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
830 "(running=%d)", p2p->p2p_scan_running);
831 running = p2p->p2p_scan_running;
832 /* Make sure we recover from missed scan results callback */
833 p2p->p2p_scan_running = 0;
836 p2p_run_after_scan(p2p);
840 static void p2p_free_req_dev_types(struct p2p_data *p2p)
842 p2p->num_req_dev_types = 0;
843 os_free(p2p->req_dev_types);
844 p2p->req_dev_types = NULL;
848 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
849 enum p2p_discovery_type type,
850 unsigned int num_req_dev_types, const u8 *req_dev_types)
854 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
856 if (p2p->p2p_scan_running) {
857 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
861 p2p_free_req_dev_types(p2p);
862 if (req_dev_types && num_req_dev_types) {
863 p2p->req_dev_types = os_malloc(num_req_dev_types *
865 if (p2p->req_dev_types == NULL)
867 os_memcpy(p2p->req_dev_types, req_dev_types,
868 num_req_dev_types * WPS_DEV_TYPE_LEN);
869 p2p->num_req_dev_types = num_req_dev_types;
872 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
873 p2p_clear_timeout(p2p);
874 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
875 p2p->find_type = type;
876 p2p_device_clear_reported(p2p);
877 p2p_set_state(p2p, P2P_SEARCH);
878 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
880 eloop_register_timeout(timeout, 0, p2p_find_timeout,
883 case P2P_FIND_START_WITH_FULL:
884 case P2P_FIND_PROGRESSIVE:
885 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
886 p2p->num_req_dev_types,
889 case P2P_FIND_ONLY_SOCIAL:
890 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
891 p2p->num_req_dev_types,
899 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
900 p2p->p2p_scan_running = 1;
901 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
902 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
905 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
913 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
915 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
916 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
917 p2p_clear_timeout(p2p);
918 p2p_set_state(p2p, P2P_IDLE);
919 p2p_free_req_dev_types(p2p);
920 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
921 p2p->go_neg_peer = NULL;
923 p2p->invite_peer = NULL;
924 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
925 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
926 "since we are on correct channel for response");
929 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
933 void p2p_stop_find(struct p2p_data *p2p)
935 p2p_stop_find_for_freq(p2p, 0);
939 static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq)
942 u8 op_reg_class, op_channel;
943 if (p2p_freq_to_channel(p2p->cfg->country, force_freq,
944 &op_reg_class, &op_channel) < 0) {
945 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
946 "P2P: Unsupported frequency %u MHz",
950 if (!p2p_channels_includes(&p2p->cfg->channels, op_reg_class,
952 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
953 "P2P: Frequency %u MHz (oper_class %u "
954 "channel %u) not allowed for P2P",
955 force_freq, op_reg_class, op_channel);
958 p2p->op_reg_class = op_reg_class;
959 p2p->op_channel = op_channel;
960 p2p->channels.reg_classes = 1;
961 p2p->channels.reg_class[0].channels = 1;
962 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
963 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
965 u8 op_reg_class, op_channel;
967 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
968 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
969 p2p_freq_to_channel(p2p->cfg->country,
970 p2p->best_freq_overall,
971 &op_reg_class, &op_channel) == 0) {
972 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
973 "P2P: Select best overall channel as "
974 "operating channel preference");
975 p2p->op_reg_class = op_reg_class;
976 p2p->op_channel = op_channel;
977 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
978 p2p_supported_freq(p2p, p2p->best_freq_5) &&
979 p2p_freq_to_channel(p2p->cfg->country,
981 &op_reg_class, &op_channel) ==
983 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
984 "P2P: Select best 5 GHz channel as "
985 "operating channel preference");
986 p2p->op_reg_class = op_reg_class;
987 p2p->op_channel = op_channel;
988 } else if (!p2p->cfg->cfg_op_channel &&
989 p2p->best_freq_24 > 0 &&
990 p2p_supported_freq(p2p, p2p->best_freq_24) &&
991 p2p_freq_to_channel(p2p->cfg->country,
993 &op_reg_class, &op_channel) ==
995 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
996 "P2P: Select best 2.4 GHz channel as "
997 "operating channel preference");
998 p2p->op_reg_class = op_reg_class;
999 p2p->op_channel = op_channel;
1001 p2p->op_reg_class = p2p->cfg->op_reg_class;
1002 p2p->op_channel = p2p->cfg->op_channel;
1005 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1006 sizeof(struct p2p_channels));
1008 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1009 "P2P: Own preference for operation channel: "
1010 "Operating Class %u Channel %u%s",
1011 p2p->op_reg_class, p2p->op_channel,
1012 force_freq ? " (forced)" : "");
1018 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1019 enum p2p_wps_method wps_method,
1020 int go_intent, const u8 *own_interface_addr,
1021 unsigned int force_freq, int persistent_group)
1023 struct p2p_device *dev;
1025 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1026 "P2P: Request to start group negotiation - peer=" MACSTR
1027 " GO Intent=%d Intended Interface Address=" MACSTR
1028 " wps_method=%d persistent_group=%d",
1029 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1030 wps_method, persistent_group);
1032 if (p2p_prepare_channel(p2p, force_freq) < 0)
1035 dev = p2p_get_device(p2p, peer_addr);
1036 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1037 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1038 "P2P: Cannot connect to unknown P2P Device " MACSTR,
1039 MAC2STR(peer_addr));
1043 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1044 if (!(dev->info.dev_capab &
1045 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1046 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1047 "P2P: Cannot connect to P2P Device " MACSTR
1048 " that is in a group and is not discoverable",
1049 MAC2STR(peer_addr));
1052 if (dev->oper_freq <= 0) {
1053 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1054 "P2P: Cannot connect to P2P Device " MACSTR
1055 " with incomplete information",
1056 MAC2STR(peer_addr));
1061 * First, try to connect directly. If the peer does not
1062 * acknowledge frames, assume it is sleeping and use device
1063 * discoverability via the GO at that point.
1067 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1068 dev->flags &= ~P2P_DEV_USER_REJECTED;
1069 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1070 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1071 dev->connect_reqs = 0;
1072 dev->go_neg_req_sent = 0;
1073 dev->go_state = UNKNOWN_GO;
1074 if (persistent_group)
1075 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1077 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
1078 p2p->go_intent = go_intent;
1079 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1081 if (p2p->state != P2P_IDLE)
1084 if (p2p->after_scan_tx) {
1086 * We need to drop the pending frame to avoid issues with the
1087 * new GO Negotiation, e.g., when the pending frame was from a
1088 * previous attempt at starting a GO Negotiation.
1090 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
1091 "previous pending Action frame TX that was waiting "
1092 "for p2p_scan completion");
1093 os_free(p2p->after_scan_tx);
1094 p2p->after_scan_tx = NULL;
1097 dev->wps_method = wps_method;
1098 dev->status = P2P_SC_SUCCESS;
1101 dev->flags |= P2P_DEV_FORCE_FREQ;
1103 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1105 if (p2p->p2p_scan_running) {
1106 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1107 "P2P: p2p_scan running - delay connect send");
1108 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1109 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1112 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1114 return p2p_connect_send(p2p, dev);
1118 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1119 enum p2p_wps_method wps_method,
1120 int go_intent, const u8 *own_interface_addr,
1121 unsigned int force_freq, int persistent_group)
1123 struct p2p_device *dev;
1125 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1126 "P2P: Request to authorize group negotiation - peer=" MACSTR
1127 " GO Intent=%d Intended Interface Address=" MACSTR
1128 " wps_method=%d persistent_group=%d",
1129 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1130 wps_method, persistent_group);
1132 if (p2p_prepare_channel(p2p, force_freq) < 0)
1135 dev = p2p_get_device(p2p, peer_addr);
1137 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1138 "P2P: Cannot authorize unknown P2P Device " MACSTR,
1139 MAC2STR(peer_addr));
1143 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1144 dev->flags &= ~P2P_DEV_USER_REJECTED;
1145 dev->go_neg_req_sent = 0;
1146 dev->go_state = UNKNOWN_GO;
1147 if (persistent_group)
1148 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1150 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
1151 p2p->go_intent = go_intent;
1152 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1154 dev->wps_method = wps_method;
1155 dev->status = P2P_SC_SUCCESS;
1158 dev->flags |= P2P_DEV_FORCE_FREQ;
1160 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1166 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1167 struct p2p_device *dev, struct p2p_message *msg)
1169 os_get_time(&dev->last_seen);
1171 p2p_copy_wps_info(dev, 0, msg);
1173 if (msg->listen_channel) {
1175 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1176 msg->listen_channel[3],
1177 msg->listen_channel[4]);
1179 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1180 "P2P: Unknown peer Listen channel: "
1181 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1182 msg->listen_channel[0],
1183 msg->listen_channel[1],
1184 msg->listen_channel[2],
1185 msg->listen_channel[3],
1186 msg->listen_channel[4]);
1188 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1189 "peer " MACSTR " Listen channel: %u -> %u MHz",
1190 MAC2STR(dev->info.p2p_device_addr),
1191 dev->listen_freq, freq);
1192 dev->listen_freq = freq;
1196 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1197 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1198 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1199 "P2P: Completed device entry based on data from "
1200 "GO Negotiation Request");
1202 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1203 "P2P: Created device entry based on GO Neg Req: "
1204 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1206 MAC2STR(dev->info.p2p_device_addr),
1207 dev->info.dev_capab, dev->info.group_capab,
1208 dev->info.device_name, dev->listen_freq);
1211 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1213 if (dev->flags & P2P_DEV_USER_REJECTED) {
1214 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1215 "P2P: Do not report rejected device");
1219 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1220 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1221 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1225 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1227 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1228 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1229 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1230 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1231 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1235 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1237 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1238 p2p_random(params->passphrase, 8);
1243 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1245 struct p2p_go_neg_results res;
1246 int go = peer->go_state == LOCAL_GO;
1247 struct p2p_channels intersection;
1251 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1252 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
1253 "GO)", MAC2STR(peer->info.p2p_device_addr),
1254 go ? "local end" : "peer");
1256 os_memset(&res, 0, sizeof(res));
1258 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1259 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1260 res.wps_method = peer->wps_method;
1261 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP)
1262 res.persistent_group = 1;
1265 /* Setup AP mode for WPS provisioning */
1266 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1269 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1270 res.ssid_len = p2p->ssid_len;
1271 p2p_random(res.passphrase, 8);
1273 res.freq = peer->oper_freq;
1274 if (p2p->ssid_len) {
1275 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1276 res.ssid_len = p2p->ssid_len;
1280 p2p_channels_intersect(&p2p->channels, &peer->channels,
1283 for (i = 0; i < intersection.reg_classes; i++) {
1284 struct p2p_reg_class *c = &intersection.reg_class[i];
1285 if (freqs + 1 == P2P_MAX_CHANNELS)
1287 for (j = 0; j < c->channels; j++) {
1289 if (freqs + 1 == P2P_MAX_CHANNELS)
1291 freq = p2p_channel_to_freq(peer->country, c->reg_class,
1295 res.freq_list[freqs++] = freq;
1299 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1301 p2p_clear_timeout(p2p);
1302 peer->go_neg_req_sent = 0;
1303 peer->wps_method = WPS_NOT_READY;
1305 p2p_set_state(p2p, P2P_PROVISIONING);
1306 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1310 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1311 const u8 *data, size_t len, int rx_freq)
1313 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1314 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1315 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1321 case P2P_GO_NEG_REQ:
1322 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1324 case P2P_GO_NEG_RESP:
1325 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1327 case P2P_GO_NEG_CONF:
1328 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1330 case P2P_INVITATION_REQ:
1331 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1334 case P2P_INVITATION_RESP:
1335 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1337 case P2P_PROV_DISC_REQ:
1338 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1340 case P2P_PROV_DISC_RESP:
1341 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1343 case P2P_DEV_DISC_REQ:
1344 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1346 case P2P_DEV_DISC_RESP:
1347 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1350 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1351 "P2P: Unsupported P2P Public Action frame type %d",
1358 void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1359 const u8 *bssid, const u8 *data, size_t len,
1366 case WLAN_PA_VENDOR_SPECIFIC:
1371 if (WPA_GET_BE24(data) != OUI_WFA)
1379 if (*data != P2P_OUI_TYPE)
1382 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1384 case WLAN_PA_GAS_INITIAL_REQ:
1385 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1387 case WLAN_PA_GAS_INITIAL_RESP:
1388 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1390 case WLAN_PA_GAS_COMEBACK_REQ:
1391 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1393 case WLAN_PA_GAS_COMEBACK_RESP:
1394 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1400 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1401 const u8 *bssid, u8 category,
1402 const u8 *data, size_t len, int freq)
1404 if (category == WLAN_ACTION_PUBLIC) {
1405 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1409 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1415 if (WPA_GET_BE24(data) != OUI_WFA)
1420 if (*data != P2P_OUI_TYPE)
1425 /* P2P action frame */
1426 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1427 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1428 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1434 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1435 "P2P: Received P2P Action - Notice of Absence");
1438 case P2P_PRESENCE_REQ:
1439 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1441 case P2P_PRESENCE_RESP:
1442 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1444 case P2P_GO_DISC_REQ:
1445 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1448 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1449 "P2P: Received P2P Action - unknown type %u", data[0]);
1455 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1457 struct p2p_data *p2p = eloop_ctx;
1458 if (p2p->go_neg_peer == NULL)
1460 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1461 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1462 p2p_connect_send(p2p, p2p->go_neg_peer);
1466 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1468 struct p2p_data *p2p = eloop_ctx;
1469 if (p2p->invite_peer == NULL)
1471 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1472 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1476 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1477 const u8 *ie, size_t ie_len)
1479 struct p2p_message msg;
1480 struct p2p_device *dev;
1482 os_memset(&msg, 0, sizeof(msg));
1483 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1485 p2p_parse_free(&msg);
1486 return; /* not a P2P probe */
1489 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1490 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1492 /* The Probe Request is not part of P2P Device Discovery. It is
1493 * not known whether the source address of the frame is the P2P
1494 * Device Address or P2P Interface Address. Do not add a new
1495 * peer entry based on this frames.
1497 p2p_parse_free(&msg);
1501 dev = p2p_get_device(p2p, addr);
1503 if (dev->country[0] == 0 && msg.listen_channel)
1504 os_memcpy(dev->country, msg.listen_channel, 3);
1505 p2p_parse_free(&msg);
1506 return; /* already known */
1509 dev = p2p_create_device(p2p, addr);
1511 p2p_parse_free(&msg);
1515 os_get_time(&dev->last_seen);
1516 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1518 if (msg.listen_channel) {
1519 os_memcpy(dev->country, msg.listen_channel, 3);
1520 dev->listen_freq = p2p_channel_to_freq(dev->country,
1521 msg.listen_channel[3],
1522 msg.listen_channel[4]);
1525 p2p_copy_wps_info(dev, 1, &msg);
1527 p2p_parse_free(&msg);
1529 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1530 "P2P: Created device entry based on Probe Req: " MACSTR
1531 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1532 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1533 dev->info.group_capab, dev->info.device_name,
1538 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1540 struct p2p_message *msg)
1542 struct p2p_device *dev;
1544 dev = p2p_get_device(p2p, addr);
1546 os_get_time(&dev->last_seen);
1547 return dev; /* already known */
1550 dev = p2p_create_device(p2p, addr);
1554 p2p_add_dev_info(p2p, addr, dev, msg);
1560 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1562 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1564 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1565 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1566 WPA_GET_BE16(&req_dev_type[6]) == 0)
1567 return 1; /* Category match with wildcard OUI/sub-category */
1572 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1573 size_t num_req_dev_type)
1576 for (i = 0; i < num_req_dev_type; i++) {
1577 if (dev_type_match(dev_type, req_dev_type[i]))
1585 * p2p_match_dev_type - Match local device type with requested type
1586 * @p2p: P2P module context from p2p_init()
1587 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1588 * Returns: 1 on match, 0 on mismatch
1590 * This function can be used to match the Requested Device Type attribute in
1591 * WPS IE with the local device types for deciding whether to reply to a Probe
1594 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1596 struct wps_parse_attr attr;
1599 if (wps_parse_msg(wps, &attr))
1600 return 1; /* assume no Requested Device Type attributes */
1602 if (attr.num_req_dev_type == 0)
1603 return 1; /* no Requested Device Type attributes -> match */
1605 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1606 attr.num_req_dev_type))
1607 return 1; /* Own Primary Device Type matches */
1609 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1610 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1612 attr.num_req_dev_type))
1613 return 1; /* Own Secondary Device Type matches */
1615 /* No matching device type found */
1620 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1625 buf = wpabuf_alloc(1000);
1629 p2p_build_wps_ie(p2p, buf, DEV_PW_DEFAULT, 1);
1632 len = p2p_buf_add_ie_hdr(buf);
1633 p2p_buf_add_capability(buf, p2p->dev_capab, 0);
1634 if (p2p->ext_listen_interval)
1635 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1636 p2p->ext_listen_interval);
1637 p2p_buf_add_device_info(buf, p2p, NULL);
1638 p2p_buf_update_ie_hdr(buf, len);
1644 static void p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *ie,
1647 struct ieee802_11_elems elems;
1649 struct ieee80211_mgmt *resp;
1653 if (!p2p->in_listen || !p2p->drv_in_listen) {
1654 /* not in Listen state - ignore Probe Request */
1658 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1660 /* Ignore invalid Probe Request frames */
1664 if (elems.p2p == NULL) {
1665 /* not a P2P probe - ignore it */
1669 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1670 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1672 /* not using P2P Wildcard SSID - ignore */
1676 /* Check Requested Device Type match */
1677 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1678 if (wps && !p2p_match_dev_type(p2p, wps)) {
1680 /* No match with Requested Device Type */
1685 if (!p2p->cfg->send_probe_resp)
1686 return; /* Response generated elsewhere */
1688 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1689 "P2P: Reply to P2P Probe Request in Listen state");
1692 * We do not really have a specific BSS that this frame is advertising,
1693 * so build a frame that has some information in valid format. This is
1694 * really only used for discovery purposes, not to learn exact BSS
1697 ies = p2p_build_probe_resp_ies(p2p);
1701 buf = wpabuf_alloc(200 + wpabuf_len(ies));
1708 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
1710 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
1711 (WLAN_FC_STYPE_PROBE_RESP << 4));
1712 os_memcpy(resp->da, addr, ETH_ALEN);
1713 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
1714 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
1715 resp->u.probe_resp.beacon_int = host_to_le16(100);
1716 /* hardware or low-level driver will setup seq_ctrl and timestamp */
1717 resp->u.probe_resp.capab_info =
1718 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
1719 WLAN_CAPABILITY_PRIVACY |
1720 WLAN_CAPABILITY_SHORT_SLOT_TIME);
1722 wpabuf_put_u8(buf, WLAN_EID_SSID);
1723 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
1724 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1726 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
1727 wpabuf_put_u8(buf, 8);
1728 wpabuf_put_u8(buf, (60 / 5) | 0x80);
1729 wpabuf_put_u8(buf, 90 / 5);
1730 wpabuf_put_u8(buf, (120 / 5) | 0x80);
1731 wpabuf_put_u8(buf, 180 / 5);
1732 wpabuf_put_u8(buf, (240 / 5) | 0x80);
1733 wpabuf_put_u8(buf, 360 / 5);
1734 wpabuf_put_u8(buf, 480 / 5);
1735 wpabuf_put_u8(buf, 540 / 5);
1737 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
1738 wpabuf_put_u8(buf, 1);
1739 wpabuf_put_u8(buf, p2p->cfg->channel);
1741 wpabuf_put_buf(buf, ies);
1744 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
1750 int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *ie,
1753 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
1755 p2p_reply_probe(p2p, addr, ie, ie_len);
1757 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
1759 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
1761 /* Received a Probe Request from GO Negotiation peer */
1762 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1763 "P2P: Found GO Negotiation peer - try to start GO "
1764 "negotiation from timeout");
1765 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
1769 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
1771 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
1773 /* Received a Probe Request from Invite peer */
1774 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1775 "P2P: Found Invite peer - try to start Invite from "
1777 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
1785 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
1786 u8 *buf, size_t len, struct wpabuf *p2p_ie)
1795 return 0; /* WLAN AP is not a P2P manager */
1798 * (Re)Association Request - P2P IE
1799 * P2P Capability attribute (shall be present)
1800 * P2P Interface attribute (present if concurrent device and
1801 * P2P Management is enabled)
1803 tmp = wpabuf_alloc(200);
1807 lpos = p2p_buf_add_ie_hdr(tmp);
1809 if (p2p->num_groups > 0) {
1810 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
1811 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1812 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
1814 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
1816 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
1817 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1818 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
1819 p2p_buf_add_p2p_interface(tmp, p2p);
1820 p2p_buf_update_ie_hdr(tmp, lpos);
1822 tmplen = wpabuf_len(tmp);
1826 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1835 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
1836 size_t len, int p2p_group, struct wpabuf *p2p_ie)
1840 struct p2p_device *peer;
1845 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
1848 * (Re)Association Request - P2P IE
1849 * P2P Capability attribute (shall be present)
1850 * Extended Listen Timing (may be present)
1851 * P2P Device Info attribute (shall be present)
1853 tmp = wpabuf_alloc(200);
1857 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
1859 lpos = p2p_buf_add_ie_hdr(tmp);
1860 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
1861 if (p2p->ext_listen_interval)
1862 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
1863 p2p->ext_listen_interval);
1864 p2p_buf_add_device_info(tmp, p2p, peer);
1865 p2p_buf_update_ie_hdr(tmp, lpos);
1867 tmplen = wpabuf_len(tmp);
1871 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1880 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
1882 struct wpabuf *p2p_ie;
1885 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
1889 ret = p2p_attr_text(p2p_ie, buf, end);
1890 wpabuf_free(p2p_ie);
1895 static void p2p_clear_go_neg(struct p2p_data *p2p)
1897 p2p->go_neg_peer = NULL;
1898 p2p_clear_timeout(p2p);
1899 p2p_set_state(p2p, P2P_IDLE);
1903 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
1905 if (p2p->go_neg_peer == NULL) {
1906 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1907 "P2P: No pending Group Formation - "
1908 "ignore WPS registration success notification");
1909 return; /* No pending Group Formation */
1912 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
1914 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1915 "P2P: Ignore WPS registration success notification "
1916 "for " MACSTR " (GO Negotiation peer " MACSTR ")",
1918 MAC2STR(p2p->go_neg_peer->intended_addr));
1919 return; /* Ignore unexpected peer address */
1922 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1923 "P2P: Group Formation completed successfully with " MACSTR,
1926 p2p_clear_go_neg(p2p);
1930 void p2p_group_formation_failed(struct p2p_data *p2p)
1932 if (p2p->go_neg_peer == NULL) {
1933 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1934 "P2P: No pending Group Formation - "
1935 "ignore group formation failure notification");
1936 return; /* No pending Group Formation */
1939 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1940 "P2P: Group Formation failed with " MACSTR,
1941 MAC2STR(p2p->go_neg_peer->intended_addr));
1943 p2p_clear_go_neg(p2p);
1947 struct p2p_data * p2p_init(const struct p2p_config *cfg)
1949 struct p2p_data *p2p;
1951 if (cfg->max_peers < 1)
1954 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
1957 p2p->cfg = (struct p2p_config *) (p2p + 1);
1958 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
1960 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
1961 if (cfg->manufacturer)
1962 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
1963 if (cfg->model_name)
1964 p2p->cfg->model_name = os_strdup(cfg->model_name);
1965 if (cfg->model_number)
1966 p2p->cfg->model_number = os_strdup(cfg->model_number);
1967 if (cfg->serial_number)
1968 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
1970 p2p->min_disc_int = 1;
1971 p2p->max_disc_int = 3;
1973 os_get_random(&p2p->next_tie_breaker, 1);
1974 p2p->next_tie_breaker &= 0x01;
1975 if (cfg->sd_request)
1976 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
1977 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
1978 if (cfg->concurrent_operations)
1979 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
1980 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
1982 dl_list_init(&p2p->devices);
1984 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
1985 p2p_expiration_timeout, p2p, NULL);
1991 void p2p_deinit(struct p2p_data *p2p)
1993 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
1994 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
1995 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1997 p2p_free_req_dev_types(p2p);
1998 os_free(p2p->cfg->dev_name);
1999 os_free(p2p->cfg->manufacturer);
2000 os_free(p2p->cfg->model_name);
2001 os_free(p2p->cfg->model_number);
2002 os_free(p2p->cfg->serial_number);
2003 os_free(p2p->groups);
2004 wpabuf_free(p2p->sd_resp);
2005 os_free(p2p->after_scan_tx);
2006 p2p_remove_wps_vendor_extensions(p2p);
2011 void p2p_flush(struct p2p_data *p2p)
2013 struct p2p_device *dev, *prev;
2014 p2p_clear_timeout(p2p);
2015 p2p_set_state(p2p, P2P_IDLE);
2016 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
2017 p2p->go_neg_peer = NULL;
2018 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
2019 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2021 dl_list_del(&dev->list);
2022 p2p_device_free(p2p, dev);
2024 p2p_free_sd_queries(p2p);
2025 os_free(p2p->after_scan_tx);
2026 p2p->after_scan_tx = NULL;
2030 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2032 struct p2p_device *dev;
2034 dev = p2p_get_device(p2p, addr);
2038 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
2041 if (p2p->go_neg_peer == dev)
2042 p2p->go_neg_peer = NULL;
2044 dev->wps_method = WPS_NOT_READY;
2045 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2046 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2048 /* Check if after_scan_tx is for this peer. If so free it */
2049 if (p2p->after_scan_tx &&
2050 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2051 os_free(p2p->after_scan_tx);
2052 p2p->after_scan_tx = NULL;
2059 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2061 os_free(p2p->cfg->dev_name);
2063 p2p->cfg->dev_name = os_strdup(dev_name);
2064 if (p2p->cfg->dev_name == NULL)
2067 p2p->cfg->dev_name = NULL;
2072 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2074 os_free(p2p->cfg->manufacturer);
2075 p2p->cfg->manufacturer = NULL;
2077 p2p->cfg->manufacturer = os_strdup(manufacturer);
2078 if (p2p->cfg->manufacturer == NULL)
2086 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2088 os_free(p2p->cfg->model_name);
2089 p2p->cfg->model_name = NULL;
2091 p2p->cfg->model_name = os_strdup(model_name);
2092 if (p2p->cfg->model_name == NULL)
2100 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2102 os_free(p2p->cfg->model_number);
2103 p2p->cfg->model_number = NULL;
2105 p2p->cfg->model_number = os_strdup(model_number);
2106 if (p2p->cfg->model_number == NULL)
2114 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2116 os_free(p2p->cfg->serial_number);
2117 p2p->cfg->serial_number = NULL;
2118 if (serial_number) {
2119 p2p->cfg->serial_number = os_strdup(serial_number);
2120 if (p2p->cfg->serial_number == NULL)
2128 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2130 p2p->cfg->config_methods = config_methods;
2134 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2136 os_memcpy(p2p->cfg->uuid, uuid, 16);
2140 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2142 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2147 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2148 size_t num_dev_types)
2150 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2151 num_dev_types = P2P_SEC_DEVICE_TYPES;
2152 p2p->cfg->num_sec_dev_types = num_dev_types;
2153 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2158 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2162 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2163 wpabuf_free(p2p->wps_vendor_ext[i]);
2164 p2p->wps_vendor_ext[i] = NULL;
2169 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2170 const struct wpabuf *vendor_ext)
2174 if (vendor_ext == NULL)
2177 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2178 if (p2p->wps_vendor_ext[i] == NULL)
2181 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2184 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2185 if (p2p->wps_vendor_ext[i] == NULL)
2192 int p2p_set_country(struct p2p_data *p2p, const char *country)
2194 os_memcpy(p2p->cfg->country, country, 3);
2199 void p2p_continue_find(struct p2p_data *p2p)
2201 struct p2p_device *dev;
2202 p2p_set_state(p2p, P2P_SEARCH);
2203 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2204 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2205 if (p2p_start_sd(p2p, dev) == 0)
2209 } else if (dev->req_config_methods &&
2210 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2211 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2212 "pending Provisioning Discovery Request to "
2213 MACSTR " (config methods 0x%x)",
2214 MAC2STR(dev->info.p2p_device_addr),
2215 dev->req_config_methods);
2216 if (p2p_send_prov_disc_req(p2p, dev, 0) == 0)
2221 p2p_listen_in_find(p2p);
2225 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2227 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2228 "P2P: Service Discovery Query TX callback: success=%d",
2230 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2234 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2235 p2p->sd_peer = NULL;
2237 p2p_continue_find(p2p);
2241 if (p2p->sd_peer == NULL) {
2242 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2243 "P2P: No SD peer entry known");
2244 p2p_continue_find(p2p);
2248 /* Wait for response from the peer */
2249 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2250 p2p_set_timeout(p2p, 0, 200000);
2253 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2255 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2256 "P2P: Provision Discovery Request TX callback: success=%d",
2258 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2261 if (p2p->state != P2P_IDLE)
2262 p2p_continue_find(p2p);
2266 /* Wait for response from the peer */
2267 if (p2p->state == P2P_SEARCH)
2268 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2269 p2p_set_timeout(p2p, 0, 200000);
2273 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2274 int level, const u8 *ies, size_t ies_len)
2276 p2p_add_device(p2p, bssid, freq, level, ies, ies_len);
2278 if (p2p->go_neg_peer && p2p->state == P2P_SEARCH &&
2279 os_memcmp(p2p->go_neg_peer->info.p2p_device_addr, bssid, ETH_ALEN)
2281 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2282 "P2P: Found GO Negotiation peer - try to start GO "
2284 p2p_connect_send(p2p, p2p->go_neg_peer);
2292 void p2p_scan_res_handled(struct p2p_data *p2p)
2294 if (!p2p->p2p_scan_running) {
2295 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2296 "running, but scan results received");
2298 p2p->p2p_scan_running = 0;
2299 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2301 if (p2p_run_after_scan(p2p))
2303 if (p2p->state == P2P_SEARCH)
2304 p2p_continue_find(p2p);
2308 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies)
2310 u8 *len = p2p_buf_add_ie_hdr(ies);
2311 p2p_buf_add_capability(ies, p2p->dev_capab, 0);
2312 if (p2p->cfg->reg_class && p2p->cfg->channel)
2313 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2314 p2p->cfg->reg_class,
2316 if (p2p->ext_listen_interval)
2317 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2318 p2p->ext_listen_interval);
2319 /* TODO: p2p_buf_add_operating_channel() if GO */
2320 p2p_buf_update_ie_hdr(ies, len);
2324 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2326 return p2p_attr_text(p2p_ie, buf, end);
2330 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2332 struct p2p_device *dev = p2p->go_neg_peer;
2334 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2335 "P2P: GO Negotiation Request TX callback: success=%d",
2339 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2340 "P2P: No pending GO Negotiation");
2345 dev->go_neg_req_sent++;
2346 if (dev->flags & P2P_DEV_USER_REJECTED) {
2347 p2p_set_state(p2p, P2P_IDLE);
2353 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2354 !is_zero_ether_addr(dev->member_in_go_dev)) {
2355 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2356 "P2P: Peer " MACSTR " did not acknowledge request - "
2357 "try to use device discoverability through its GO",
2358 MAC2STR(dev->info.p2p_device_addr));
2359 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2360 p2p_send_dev_disc_req(p2p, dev);
2365 * Use P2P find, if needed, to find the other device from its listen
2368 p2p_set_state(p2p, P2P_CONNECT);
2369 p2p_set_timeout(p2p, 0, 100000);
2373 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2375 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2376 "P2P: GO Negotiation Response TX callback: success=%d",
2378 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2379 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2380 "P2P: Ignore TX callback event - GO Negotiation is "
2381 "not running anymore");
2384 p2p_set_state(p2p, P2P_CONNECT);
2385 p2p_set_timeout(p2p, 0, 100000);
2389 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
2391 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2392 "P2P: GO Negotiation Response (failure) TX callback: "
2393 "success=%d", success);
2394 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2395 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2396 p2p->go_neg_peer->status);
2401 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2402 enum p2p_send_action_result result)
2404 struct p2p_device *dev;
2406 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2407 "P2P: GO Negotiation Confirm TX callback: result=%d",
2409 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2410 if (result == P2P_SEND_ACTION_FAILED) {
2411 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2414 if (result == P2P_SEND_ACTION_NO_ACK) {
2416 * It looks like the TX status for GO Negotiation Confirm is
2417 * often showing failure even when the peer has actually
2418 * received the frame. Since the peer may change channels
2419 * immediately after having received the frame, we may not see
2420 * an Ack for retries, so just dropping a single frame may
2421 * trigger this. To allow the group formation to succeed if the
2422 * peer did indeed receive the frame, continue regardless of
2425 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2426 "P2P: Assume GO Negotiation Confirm TX was actually "
2427 "received by the peer even though Ack was not "
2431 dev = p2p->go_neg_peer;
2435 p2p_go_complete(p2p, dev);
2439 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2440 const u8 *src, const u8 *bssid,
2441 enum p2p_send_action_result result)
2443 enum p2p_pending_action_state state;
2446 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2447 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
2448 " src=" MACSTR " bssid=" MACSTR " result=%d",
2449 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2450 MAC2STR(bssid), result);
2451 success = result == P2P_SEND_ACTION_SUCCESS;
2452 state = p2p->pending_action_state;
2453 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2455 case P2P_NO_PENDING_ACTION:
2457 case P2P_PENDING_GO_NEG_REQUEST:
2458 p2p_go_neg_req_cb(p2p, success);
2460 case P2P_PENDING_GO_NEG_RESPONSE:
2461 p2p_go_neg_resp_cb(p2p, success);
2463 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2464 p2p_go_neg_resp_failure_cb(p2p, success);
2466 case P2P_PENDING_GO_NEG_CONFIRM:
2467 p2p_go_neg_conf_cb(p2p, result);
2469 case P2P_PENDING_SD:
2470 p2p_sd_cb(p2p, success);
2472 case P2P_PENDING_PD:
2473 p2p_prov_disc_cb(p2p, success);
2475 case P2P_PENDING_INVITATION_REQUEST:
2476 p2p_invitation_req_cb(p2p, success);
2478 case P2P_PENDING_INVITATION_RESPONSE:
2479 p2p_invitation_resp_cb(p2p, success);
2481 case P2P_PENDING_DEV_DISC_REQUEST:
2482 p2p_dev_disc_req_cb(p2p, success);
2484 case P2P_PENDING_DEV_DISC_RESPONSE:
2485 p2p_dev_disc_resp_cb(p2p, success);
2487 case P2P_PENDING_GO_DISC_REQ:
2488 p2p_go_disc_req_cb(p2p, success);
2494 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2495 unsigned int duration)
2497 if (freq == p2p->pending_client_disc_freq) {
2498 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2499 "P2P: Client discoverability remain-awake completed");
2500 p2p->pending_client_disc_freq = 0;
2504 if (freq != p2p->pending_listen_freq) {
2505 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2506 "P2P: Unexpected listen callback for freq=%u "
2507 "duration=%u (pending_listen_freq=%u)",
2508 freq, duration, p2p->pending_listen_freq);
2512 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2513 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
2515 p2p->pending_listen_sec, p2p->pending_listen_usec,
2516 p2p->pending_listen_freq);
2518 p2p->drv_in_listen = freq;
2519 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
2521 * Add 20 msec extra wait to avoid race condition with driver
2522 * remain-on-channel end event, i.e., give driver more time to
2523 * complete the operation before our timeout expires.
2525 p2p_set_timeout(p2p, p2p->pending_listen_sec,
2526 p2p->pending_listen_usec + 20000);
2529 p2p->pending_listen_freq = 0;
2533 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
2535 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
2536 "state (freq=%u)", freq);
2537 p2p->drv_in_listen = 0;
2539 return 0; /* Internal timeout will trigger the next step */
2541 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
2542 if (p2p->go_neg_peer->connect_reqs >= 120) {
2543 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2544 "P2P: Timeout on sending GO Negotiation "
2545 "Request without getting response");
2546 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2550 p2p_set_state(p2p, P2P_CONNECT);
2551 p2p_connect_send(p2p, p2p->go_neg_peer);
2553 } else if (p2p->state == P2P_SEARCH) {
2562 static void p2p_timeout_connect(struct p2p_data *p2p)
2564 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2565 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
2566 p2p_listen_in_find(p2p);
2570 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
2572 if (p2p->go_neg_peer) {
2573 if (p2p->drv_in_listen) {
2574 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
2575 "still in Listen state; wait for it to "
2580 if (p2p->go_neg_peer->connect_reqs >= 120) {
2581 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2582 "P2P: Timeout on sending GO Negotiation "
2583 "Request without getting response");
2584 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2588 p2p_set_state(p2p, P2P_CONNECT);
2589 p2p_connect_send(p2p, p2p->go_neg_peer);
2591 p2p_set_state(p2p, P2P_IDLE);
2595 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
2598 * TODO: could remain constantly in Listen state for some time if there
2599 * are no other concurrent uses for the radio. For now, go to listen
2600 * state once per second to give other uses a chance to use the radio.
2602 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
2603 p2p_set_timeout(p2p, 1, 0);
2607 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
2609 struct p2p_device *dev = p2p->go_neg_peer;
2612 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2613 "P2P: Unknown GO Neg peer - stop GO Neg wait");
2618 if (dev->wait_count >= 120) {
2619 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2620 "P2P: Timeout on waiting peer to become ready for GO "
2622 p2p_go_neg_failed(p2p, dev, -1);
2626 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2627 "P2P: Go to Listen state while waiting for the peer to become "
2628 "ready for GO Negotiation");
2629 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
2630 p2p_listen_in_find(p2p);
2634 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
2636 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2637 "P2P: Service Discovery Query timeout");
2639 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2640 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2641 p2p->sd_peer = NULL;
2643 p2p_continue_find(p2p);
2647 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
2649 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2650 "P2P: Provision Discovery Request timeout");
2651 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2652 p2p_continue_find(p2p);
2656 static void p2p_timeout_invite(struct p2p_data *p2p)
2658 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2659 p2p_set_state(p2p, P2P_INVITE_LISTEN);
2660 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
2662 * Better remain on operating channel instead of listen channel
2663 * when running a group.
2665 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
2666 "active GO role - wait on operating channel");
2667 p2p_set_timeout(p2p, 0, 100000);
2670 p2p_listen_in_find(p2p);
2674 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
2676 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
2677 p2p_set_state(p2p, P2P_INVITE);
2678 p2p_invite_send(p2p, p2p->invite_peer,
2679 p2p->invite_go_dev_addr);
2681 if (p2p->invite_peer) {
2682 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2683 "P2P: Invitation Request retry limit reached");
2684 if (p2p->cfg->invitation_result)
2685 p2p->cfg->invitation_result(
2686 p2p->cfg->cb_ctx, -1, NULL);
2688 p2p_set_state(p2p, P2P_IDLE);
2693 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
2695 struct p2p_data *p2p = eloop_ctx;
2697 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
2698 p2p_state_txt(p2p->state));
2702 switch (p2p->state) {
2709 p2p_timeout_connect(p2p);
2711 case P2P_CONNECT_LISTEN:
2712 p2p_timeout_connect_listen(p2p);
2716 case P2P_LISTEN_ONLY:
2717 if (p2p->ext_listen_only) {
2718 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2719 "P2P: Extended Listen Timing - Listen State "
2721 p2p->ext_listen_only = 0;
2722 p2p_set_state(p2p, P2P_IDLE);
2725 case P2P_WAIT_PEER_CONNECT:
2726 p2p_timeout_wait_peer_connect(p2p);
2728 case P2P_WAIT_PEER_IDLE:
2729 p2p_timeout_wait_peer_idle(p2p);
2731 case P2P_SD_DURING_FIND:
2732 p2p_timeout_sd_during_find(p2p);
2734 case P2P_PROVISIONING:
2736 case P2P_PD_DURING_FIND:
2737 p2p_timeout_prov_disc_during_find(p2p);
2740 p2p_timeout_invite(p2p);
2742 case P2P_INVITE_LISTEN:
2743 p2p_timeout_invite_listen(p2p);
2749 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
2751 struct p2p_device *dev;
2753 dev = p2p_get_device(p2p, peer_addr);
2754 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
2755 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
2757 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
2758 " unknown", MAC2STR(peer_addr));
2761 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
2762 dev->flags |= P2P_DEV_USER_REJECTED;
2767 static const char * p2p_wps_method_text(enum p2p_wps_method method)
2774 case WPS_PIN_DISPLAY:
2776 case WPS_PIN_KEYPAD:
2786 static const char * p2p_go_state_text(enum p2p_go_state go_state)
2801 int p2p_get_peer_info(struct p2p_data *p2p, const u8 *addr, int next,
2802 char *buf, size_t buflen)
2804 struct p2p_device *dev;
2808 char devtype[WPS_DEV_TYPE_BUFSIZE];
2811 dev = p2p_get_device(p2p, addr);
2813 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
2816 dev = dl_list_first(&dev->list, struct p2p_device, list);
2817 if (&dev->list == &p2p->devices)
2827 res = os_snprintf(pos, end - pos, MACSTR "\n",
2828 MAC2STR(dev->info.p2p_device_addr));
2829 if (res < 0 || res >= end - pos)
2834 res = os_snprintf(pos, end - pos,
2839 "interface_addr=" MACSTR "\n"
2840 "member_in_go_dev=" MACSTR "\n"
2841 "member_in_go_iface=" MACSTR "\n"
2847 "serial_number=%s\n"
2848 "config_methods=0x%x\n"
2850 "group_capab=0x%x\n"
2851 "go_neg_req_sent=%d\n"
2854 "intended_addr=" MACSTR "\n"
2857 "req_config_methods=0x%x\n"
2858 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
2861 "invitation_reqs=%u\n",
2862 (int) (now.sec - dev->last_seen.sec),
2865 p2p_wps_method_text(dev->wps_method),
2866 MAC2STR(dev->interface_addr),
2867 MAC2STR(dev->member_in_go_dev),
2868 MAC2STR(dev->member_in_go_iface),
2869 wps_dev_type_bin2str(dev->info.pri_dev_type,
2870 devtype, sizeof(devtype)),
2871 dev->info.device_name,
2872 dev->info.manufacturer,
2873 dev->info.model_name,
2874 dev->info.model_number,
2875 dev->info.serial_number,
2876 dev->info.config_methods,
2877 dev->info.dev_capab,
2878 dev->info.group_capab,
2879 dev->go_neg_req_sent,
2880 p2p_go_state_text(dev->go_state),
2882 MAC2STR(dev->intended_addr),
2883 dev->country[0] ? dev->country[0] : '_',
2884 dev->country[1] ? dev->country[1] : '_',
2886 dev->req_config_methods,
2887 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
2888 "[PROBE_REQ_ONLY]" : "",
2889 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
2890 dev->flags & P2P_DEV_NOT_YET_READY ?
2891 "[NOT_YET_READY]" : "",
2892 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
2893 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
2895 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
2896 "[PD_PEER_DISPLAY]" : "",
2897 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
2898 "[PD_PEER_KEYPAD]" : "",
2899 dev->flags & P2P_DEV_USER_REJECTED ?
2900 "[USER_REJECTED]" : "",
2901 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
2902 "[PEER_WAITING_RESPONSE]" : "",
2903 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
2904 "[PREFER_PERSISTENT_GROUP]" : "",
2905 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
2906 "[WAIT_GO_NEG_RESPONSE]" : "",
2907 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
2908 "[WAIT_GO_NEG_CONFIRM]" : "",
2909 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
2910 "[GROUP_CLIENT_ONLY]" : "",
2911 dev->flags & P2P_DEV_FORCE_FREQ ?
2912 "[FORCE_FREQ]" : "",
2913 dev->flags & P2P_DEV_PD_FOR_JOIN ?
2914 "[PD_FOR_JOIN]" : "",
2917 dev->invitation_reqs);
2918 if (res < 0 || res >= end - pos)
2922 if (dev->ext_listen_period) {
2923 res = os_snprintf(pos, end - pos,
2924 "ext_listen_period=%u\n"
2925 "ext_listen_interval=%u\n",
2926 dev->ext_listen_period,
2927 dev->ext_listen_interval);
2928 if (res < 0 || res >= end - pos)
2933 if (dev->oper_ssid_len) {
2934 res = os_snprintf(pos, end - pos,
2936 wpa_ssid_txt(dev->oper_ssid,
2937 dev->oper_ssid_len));
2938 if (res < 0 || res >= end - pos)
2947 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
2950 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
2951 "discoverability enabled");
2952 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2954 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
2955 "discoverability disabled");
2956 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2961 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
2962 u32 duration2, u32 interval2)
2965 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
2968 req = wpabuf_alloc(100);
2972 if (duration1 || interval1) {
2973 os_memset(&desc1, 0, sizeof(desc1));
2974 desc1.count_type = 1;
2975 desc1.duration = duration1;
2976 desc1.interval = interval1;
2979 if (duration2 || interval2) {
2980 os_memset(&desc2, 0, sizeof(desc2));
2981 desc2.count_type = 2;
2982 desc2.duration = duration2;
2983 desc2.interval = interval2;
2988 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
2989 len = p2p_buf_add_ie_hdr(req);
2990 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
2991 p2p_buf_update_ie_hdr(req, len);
2997 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
2998 const u8 *own_interface_addr, unsigned int freq,
2999 u32 duration1, u32 interval1, u32 duration2,
3004 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
3005 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
3006 "int1=%u dur2=%u int2=%u",
3007 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3008 freq, duration1, interval1, duration2, interval2);
3010 req = p2p_build_presence_req(duration1, interval1, duration2,
3015 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3016 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3018 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3019 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3020 "P2P: Failed to send Action frame");
3028 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3029 size_t noa_len, u8 dialog_token)
3031 struct wpabuf *resp;
3034 resp = wpabuf_alloc(100 + noa_len);
3038 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3039 len = p2p_buf_add_ie_hdr(resp);
3040 p2p_buf_add_status(resp, status);
3042 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3043 wpabuf_put_le16(resp, noa_len);
3044 wpabuf_put_data(resp, noa, noa_len);
3046 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3047 p2p_buf_update_ie_hdr(resp, len);
3053 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3054 const u8 *sa, const u8 *data, size_t len,
3057 struct p2p_message msg;
3059 struct wpabuf *resp;
3061 struct p2p_group *group = NULL;
3066 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3067 "P2P: Received P2P Action - P2P Presence Request");
3069 for (g = 0; g < p2p->num_groups; g++) {
3070 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3072 group = p2p->groups[g];
3076 if (group == NULL) {
3077 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3078 "P2P: Ignore P2P Presence Request for unknown group "
3079 MACSTR, MAC2STR(da));
3083 if (p2p_parse(data, len, &msg) < 0) {
3084 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3085 "P2P: Failed to parse P2P Presence Request");
3086 status = P2P_SC_FAIL_INVALID_PARAMS;
3091 if (msg.noa == NULL) {
3092 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3093 "P2P: No NoA attribute in P2P Presence Request");
3094 status = P2P_SC_FAIL_INVALID_PARAMS;
3098 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3101 if (p2p->cfg->get_noa)
3102 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3106 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3107 noa_len > 0 ? noa_len : 0,
3110 p2p_parse_free(&msg);
3114 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3115 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3116 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3117 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3118 "P2P: Failed to send Action frame");
3124 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3125 const u8 *sa, const u8 *data, size_t len)
3127 struct p2p_message msg;
3129 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3130 "P2P: Received P2P Action - P2P Presence Response");
3132 if (p2p_parse(data, len, &msg) < 0) {
3133 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3134 "P2P: Failed to parse P2P Presence Response");
3138 if (msg.status == NULL || msg.noa == NULL) {
3139 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3140 "P2P: No Status or NoA attribute in P2P Presence "
3142 p2p_parse_free(&msg);
3147 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3148 "P2P: P2P Presence Request was rejected: status %u",
3150 p2p_parse_free(&msg);
3154 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3155 "P2P: P2P Presence Request was accepted");
3156 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3157 msg.noa, msg.noa_len);
3158 /* TODO: process NoA */
3159 p2p_parse_free(&msg);
3163 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3165 struct p2p_data *p2p = eloop_ctx;
3167 if (p2p->ext_listen_interval) {
3168 /* Schedule next extended listen timeout */
3169 eloop_register_timeout(p2p->ext_listen_interval_sec,
3170 p2p->ext_listen_interval_usec,
3171 p2p_ext_listen_timeout, p2p, NULL);
3174 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3176 * This should not really happen, but it looks like the Listen
3177 * command may fail is something else (e.g., a scan) was
3178 * running at an inconvenient time. As a workaround, allow new
3179 * Extended Listen operation to be started.
3181 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
3182 "Extended Listen operation had not been completed - "
3184 p2p->ext_listen_only = 0;
3185 p2p_set_state(p2p, P2P_IDLE);
3188 if (p2p->state != P2P_IDLE) {
3189 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
3190 "Listen timeout in active state (%s)",
3191 p2p_state_txt(p2p->state));
3195 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
3196 p2p->ext_listen_only = 1;
3197 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3198 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
3199 "Listen state for Extended Listen Timing");
3200 p2p->ext_listen_only = 0;
3205 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3206 unsigned int interval)
3208 if (period > 65535 || interval > 65535 || period > interval ||
3209 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3210 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3211 "P2P: Invalid Extended Listen Timing request: "
3212 "period=%u interval=%u", period, interval);
3216 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3218 if (interval == 0) {
3219 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3220 "P2P: Disabling Extended Listen Timing");
3221 p2p->ext_listen_period = 0;
3222 p2p->ext_listen_interval = 0;
3226 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3227 "P2P: Enabling Extended Listen Timing: period %u msec, "
3228 "interval %u msec", period, interval);
3229 p2p->ext_listen_period = period;
3230 p2p->ext_listen_interval = interval;
3231 p2p->ext_listen_interval_sec = interval / 1000;
3232 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3234 eloop_register_timeout(p2p->ext_listen_interval_sec,
3235 p2p->ext_listen_interval_usec,
3236 p2p_ext_listen_timeout, p2p, NULL);
3242 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3243 const u8 *ie, size_t ie_len)
3245 struct p2p_message msg;
3247 if (bssid == NULL || ie == NULL)
3250 os_memset(&msg, 0, sizeof(msg));
3251 if (p2p_parse_ies(ie, ie_len, &msg))
3253 if (msg.minor_reason_code == NULL)
3256 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3257 "P2P: Deauthentication notification BSSID " MACSTR
3258 " reason_code=%u minor_reason_code=%u",
3259 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3261 p2p_parse_free(&msg);
3265 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3266 const u8 *ie, size_t ie_len)
3268 struct p2p_message msg;
3270 if (bssid == NULL || ie == NULL)
3273 os_memset(&msg, 0, sizeof(msg));
3274 if (p2p_parse_ies(ie, ie_len, &msg))
3276 if (msg.minor_reason_code == NULL)
3279 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3280 "P2P: Disassociation notification BSSID " MACSTR
3281 " reason_code=%u minor_reason_code=%u",
3282 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3284 p2p_parse_free(&msg);
3288 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3291 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3292 "Device operations enabled");
3293 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3295 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3296 "Device operations disabled");
3297 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3302 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3304 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
3307 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
3308 "reg_class %u channel %u", reg_class, channel);
3309 p2p->cfg->reg_class = reg_class;
3310 p2p->cfg->channel = channel;
3316 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3318 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
3319 if (postfix == NULL) {
3320 p2p->cfg->ssid_postfix_len = 0;
3323 if (len > sizeof(p2p->cfg->ssid_postfix))
3325 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3326 p2p->cfg->ssid_postfix_len = len;
3331 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3334 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3335 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3337 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3342 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3345 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3348 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
3353 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3355 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
3356 if (is_zero_ether_addr(p2p->peer_filter))
3357 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
3360 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
3361 "filter for " MACSTR, MAC2STR(p2p->peer_filter));
3365 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
3367 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
3368 enabled ? "enabled" : "disabled");
3369 if (p2p->cross_connect == enabled)
3371 p2p->cross_connect = enabled;
3372 /* TODO: may need to tear down any action group where we are GO(?) */
3376 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
3378 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3381 if (dev->oper_freq <= 0)
3383 return dev->oper_freq;
3387 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
3389 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
3390 enabled ? "enabled" : "disabled");
3391 p2p->cfg->p2p_intra_bss = enabled;
3395 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
3397 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
3398 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
3402 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3403 const u8 *src, const u8 *bssid, const u8 *buf,
3404 size_t len, unsigned int wait_time)
3406 if (p2p->p2p_scan_running) {
3407 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
3408 "frame TX until p2p_scan completes");
3409 if (p2p->after_scan_tx) {
3410 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
3411 "previous pending Action frame TX");
3412 os_free(p2p->after_scan_tx);
3414 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
3416 if (p2p->after_scan_tx == NULL)
3418 p2p->after_scan_tx->freq = freq;
3419 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
3420 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
3421 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
3422 p2p->after_scan_tx->len = len;
3423 p2p->after_scan_tx->wait_time = wait_time;
3424 os_memcpy(p2p->after_scan_tx + 1, buf, len);
3428 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
3429 buf, len, wait_time);
3433 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
3436 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
3437 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall);
3438 p2p->best_freq_24 = freq_24;
3439 p2p->best_freq_5 = freq_5;
3440 p2p->best_freq_overall = freq_overall;
3444 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
3446 if (p2p == NULL || p2p->go_neg_peer == NULL)
3448 return p2p->go_neg_peer->info.p2p_device_addr;
3452 const struct p2p_peer_info *
3453 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
3455 struct p2p_device *dev;
3458 dev = p2p_get_device(p2p, addr);
3463 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
3469 dev = dl_list_first(&dev->list,
3472 if (&dev->list == &p2p->devices)
3474 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
3477 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3480 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
3481 dev = dl_list_first(&dev->list,
3484 if (&dev->list == &p2p->devices)