2 * Wi-Fi Direct - P2P module
3 * Copyright (c) 2009-2010, Atheros Communications
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
13 #include "common/ieee802_11_defs.h"
14 #include "common/ieee802_11_common.h"
15 #include "common/wpa_ctrl.h"
16 #include "wps/wps_i.h"
21 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
22 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
23 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
24 const u8 *sa, const u8 *data, size_t len,
26 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
27 const u8 *sa, const u8 *data,
29 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
30 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
34 * p2p_scan recovery timeout
36 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
37 * timeout for this to avoid hitting P2P timeout unnecessarily.
39 #define P2P_SCAN_TIMEOUT 35
42 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
43 * entries will be removed
46 #define P2P_PEER_EXPIRATION_AGE 30
48 #define P2P_PEER_EXPIRATION_AGE 300
51 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
54 int p2p_connection_in_progress(struct p2p_data *p2p)
60 case P2P_CONNECT_LISTEN:
62 case P2P_WAIT_PEER_CONNECT:
63 case P2P_WAIT_PEER_IDLE:
64 case P2P_PROVISIONING:
66 case P2P_INVITE_LISTEN:
71 wpa_printf(MSG_DEBUG, "p2p_connection_in_progress state %d", p2p->state);
79 static void p2p_expire_peers(struct p2p_data *p2p)
81 struct p2p_device *dev, *n;
86 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
87 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
90 if (p2p->cfg->go_connected &&
91 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
92 dev->info.p2p_device_addr)) {
94 * We are connected as a client to a group in which the
95 * peer is the GO, so do not expire the peer entry.
97 os_get_time(&dev->last_seen);
101 for (i = 0; i < p2p->num_groups; i++) {
102 if (p2p_group_is_client_connected(
103 p2p->groups[i], dev->info.p2p_device_addr))
106 if (i < p2p->num_groups) {
108 * The peer is connected as a client in a group where
109 * we are the GO, so do not expire the peer entry.
111 os_get_time(&dev->last_seen);
116 /* If Connection is in progress, don't expire the peer
118 if (p2p_connection_in_progress(p2p))
122 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer "
123 "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr));
125 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */
126 if(&dev->list == p2p->sd_dev_list)
127 p2p->sd_dev_list = dev->list.next;
129 dl_list_del(&dev->list);
130 p2p_device_free(p2p, dev);
135 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
137 struct p2p_data *p2p = eloop_ctx;
138 p2p_expire_peers(p2p);
139 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
140 p2p_expiration_timeout, p2p, NULL);
144 static const char * p2p_state_txt(int state)
153 case P2P_CONNECT_LISTEN:
154 return "CONNECT_LISTEN";
157 case P2P_LISTEN_ONLY:
158 return "LISTEN_ONLY";
159 case P2P_WAIT_PEER_CONNECT:
160 return "WAIT_PEER_CONNECT";
161 case P2P_WAIT_PEER_IDLE:
162 return "WAIT_PEER_IDLE";
163 case P2P_SD_DURING_FIND:
164 return "SD_DURING_FIND";
165 case P2P_PROVISIONING:
166 return "PROVISIONING";
167 case P2P_PD_DURING_FIND:
168 return "PD_DURING_FIND";
171 case P2P_INVITE_LISTEN:
172 return "INVITE_LISTEN";
173 case P2P_SEARCH_WHEN_READY:
174 return "SEARCH_WHEN_READY";
175 case P2P_CONTINUE_SEARCH_WHEN_READY:
176 return "CONTINUE_SEARCH_WHEN_READY";
183 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
185 struct p2p_device *dev = NULL;
190 dev = p2p_get_device(p2p, addr);
192 return dev->wps_prov_info;
198 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
200 struct p2p_device *dev = NULL;
205 dev = p2p_get_device(p2p, addr);
207 dev->wps_prov_info = 0;
211 void p2p_set_state(struct p2p_data *p2p, int new_state)
213 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: State %s -> %s",
214 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
215 p2p->state = new_state;
219 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
221 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
222 "P2P: Set timeout (state=%s): %u.%06u sec",
223 p2p_state_txt(p2p->state), sec, usec);
224 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
225 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
229 void p2p_clear_timeout(struct p2p_data *p2p)
231 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear timeout (state=%s)",
232 p2p_state_txt(p2p->state));
233 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
237 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
240 struct p2p_go_neg_results res;
241 p2p_clear_timeout(p2p);
242 p2p_set_state(p2p, P2P_IDLE);
243 if (p2p->go_neg_peer)
244 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
245 p2p->go_neg_peer = NULL;
247 os_memset(&res, 0, sizeof(res));
250 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
252 os_memcpy(res.peer_interface_addr, peer->intended_addr,
255 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
259 static void p2p_listen_in_find(struct p2p_data *p2p)
265 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
266 "P2P: Starting short listen state (state=%s)",
267 p2p_state_txt(p2p->state));
269 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
272 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
273 "P2P: Unknown regulatory class/channel");
277 os_get_random((u8 *) &r, sizeof(r));
278 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
279 p2p->min_disc_int) * 100;
281 p2p->pending_listen_freq = freq;
282 p2p->pending_listen_sec = 0;
283 p2p->pending_listen_usec = 1024 * tu;
285 ies = p2p_build_probe_resp_ies(p2p);
289 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
291 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
292 "P2P: Failed to start listen mode");
293 p2p->pending_listen_freq = 0;
299 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
304 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
305 "P2P: Going to listen(only) state");
307 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
310 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
311 "P2P: Unknown regulatory class/channel");
315 p2p->pending_listen_freq = freq;
316 p2p->pending_listen_sec = timeout / 1000;
317 p2p->pending_listen_usec = (timeout % 1000) * 1000;
319 if (p2p->p2p_scan_running) {
320 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
321 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
322 "P2P: p2p_scan running - connect is already "
323 "pending - skip listen");
326 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
327 "P2P: p2p_scan running - delay start of listen state");
328 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
332 ies = p2p_build_probe_resp_ies(p2p);
336 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
337 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
338 "P2P: Failed to start listen mode");
339 p2p->pending_listen_freq = 0;
345 p2p_set_state(p2p, P2P_LISTEN_ONLY);
351 static void p2p_device_clear_reported(struct p2p_data *p2p)
353 struct p2p_device *dev;
354 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
355 dev->flags &= ~P2P_DEV_REPORTED;
360 * p2p_get_device - Fetch a peer entry
361 * @p2p: P2P module context from p2p_init()
362 * @addr: P2P Device Address of the peer
363 * Returns: Pointer to the device entry or %NULL if not found
365 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
367 struct p2p_device *dev;
368 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
369 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
377 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
378 * @p2p: P2P module context from p2p_init()
379 * @addr: P2P Interface Address of the peer
380 * Returns: Pointer to the device entry or %NULL if not found
382 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
385 struct p2p_device *dev;
386 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
387 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
395 * p2p_create_device - Create a peer entry
396 * @p2p: P2P module context from p2p_init()
397 * @addr: P2P Device Address of the peer
398 * Returns: Pointer to the device entry or %NULL on failure
400 * If there is already an entry for the peer, it will be returned instead of
401 * creating a new one.
403 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
406 struct p2p_device *dev, *oldest = NULL;
409 dev = p2p_get_device(p2p, addr);
413 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
415 if (oldest == NULL ||
416 os_time_before(&dev->last_seen, &oldest->last_seen))
419 if (count + 1 > p2p->cfg->max_peers && oldest) {
420 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
421 "P2P: Remove oldest peer entry to make room for a new "
424 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */
425 if(&oldest->list == p2p->sd_dev_list)
426 p2p->sd_dev_list = oldest->list.next;
428 dl_list_del(&oldest->list);
429 p2p_device_free(p2p, oldest);
432 dev = os_zalloc(sizeof(*dev));
435 dl_list_add(&p2p->devices, &dev->list);
436 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
442 static void p2p_copy_client_info(struct p2p_device *dev,
443 struct p2p_client_info *cli)
445 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
446 dev->info.device_name[cli->dev_name_len] = '\0';
447 dev->info.dev_capab = cli->dev_capab;
448 dev->info.config_methods = cli->config_methods;
449 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
450 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
451 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
452 dev->info.wps_sec_dev_type_list_len);
456 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
457 const u8 *go_interface_addr, int freq,
458 const u8 *gi, size_t gi_len)
460 struct p2p_group_info info;
462 struct p2p_device *dev;
467 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
471 * Clear old data for this group; if the devices are still in the
472 * group, the information will be restored in the loop following this.
474 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
475 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
477 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
478 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
482 for (c = 0; c < info.num_clients; c++) {
483 struct p2p_client_info *cli = &info.client[c];
484 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
486 continue; /* ignore our own entry */
487 dev = p2p_get_device(p2p, cli->p2p_device_addr);
489 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
490 P2P_DEV_PROBE_REQ_ONLY)) {
492 * Update information since we have not
493 * received this directly from the client.
495 p2p_copy_client_info(dev, cli);
498 * Need to update P2P Client Discoverability
499 * flag since it is valid only in P2P Group
502 dev->info.dev_capab &=
503 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
504 dev->info.dev_capab |=
506 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
508 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
509 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
512 dev = p2p_create_device(p2p, cli->p2p_device_addr);
515 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
516 p2p_copy_client_info(dev, cli);
517 dev->oper_freq = freq;
518 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
519 dev->info.p2p_device_addr,
521 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
524 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
526 os_get_time(&dev->last_seen);
527 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
528 os_memcpy(dev->member_in_go_iface, go_interface_addr,
536 static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req,
537 const struct p2p_message *msg)
539 os_memcpy(dev->info.device_name, msg->device_name,
540 sizeof(dev->info.device_name));
542 if (msg->manufacturer &&
543 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
544 os_memset(dev->info.manufacturer, 0,
545 sizeof(dev->info.manufacturer));
546 os_memcpy(dev->info.manufacturer, msg->manufacturer,
547 msg->manufacturer_len);
550 if (msg->model_name &&
551 msg->model_name_len < sizeof(dev->info.model_name)) {
552 os_memset(dev->info.model_name, 0,
553 sizeof(dev->info.model_name));
554 os_memcpy(dev->info.model_name, msg->model_name,
555 msg->model_name_len);
558 if (msg->model_number &&
559 msg->model_number_len < sizeof(dev->info.model_number)) {
560 os_memset(dev->info.model_number, 0,
561 sizeof(dev->info.model_number));
562 os_memcpy(dev->info.model_number, msg->model_number,
563 msg->model_number_len);
566 if (msg->serial_number &&
567 msg->serial_number_len < sizeof(dev->info.serial_number)) {
568 os_memset(dev->info.serial_number, 0,
569 sizeof(dev->info.serial_number));
570 os_memcpy(dev->info.serial_number, msg->serial_number,
571 msg->serial_number_len);
574 if (msg->pri_dev_type)
575 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
576 sizeof(dev->info.pri_dev_type));
577 else if (msg->wps_pri_dev_type)
578 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
579 sizeof(dev->info.pri_dev_type));
581 if (msg->wps_sec_dev_type_list) {
582 os_memcpy(dev->info.wps_sec_dev_type_list,
583 msg->wps_sec_dev_type_list,
584 msg->wps_sec_dev_type_list_len);
585 dev->info.wps_sec_dev_type_list_len =
586 msg->wps_sec_dev_type_list_len;
589 if (msg->capability) {
591 * P2P Client Discoverability bit is reserved in all frames
592 * that use this function, so do not change its value here.
594 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
595 dev->info.dev_capab |= msg->capability[0] &
596 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
597 dev->info.group_capab = msg->capability[1];
600 if (msg->ext_listen_timing) {
601 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
602 dev->ext_listen_interval =
603 WPA_GET_LE16(msg->ext_listen_timing + 2);
607 dev->info.config_methods = msg->config_methods ?
608 msg->config_methods : msg->wps_config_methods;
614 * p2p_add_device - Add peer entries based on scan results or P2P frames
615 * @p2p: P2P module context from p2p_init()
616 * @addr: Source address of Beacon or Probe Response frame (may be either
617 * P2P Device Address or P2P Interface Address)
618 * @level: Signal level (signal strength of the received frame from the peer)
619 * @freq: Frequency on which the Beacon or Probe Response frame was received
620 * @ies: IEs from the Beacon or Probe Response frame
621 * @ies_len: Length of ies buffer in octets
622 * @scan_res: Whether this was based on scan results
623 * Returns: 0 on success, -1 on failure
625 * If the scan result is for a GO, the clients in the group will also be added
626 * to the peer table. This function can also be used with some other frames
627 * like Provision Discovery Request that contains P2P Capability and P2P Device
630 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
631 const u8 *ies, size_t ies_len, int scan_res)
633 struct p2p_device *dev;
634 struct p2p_message msg;
635 const u8 *p2p_dev_addr;
638 os_memset(&msg, 0, sizeof(msg));
639 if (p2p_parse_ies(ies, ies_len, &msg)) {
640 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
641 "P2P: Failed to parse P2P IE for a device entry");
642 p2p_parse_free(&msg);
646 if (msg.p2p_device_addr)
647 p2p_dev_addr = msg.p2p_device_addr;
648 else if (msg.device_id)
649 p2p_dev_addr = msg.device_id;
651 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
652 "P2P: Ignore scan data without P2P Device Info or "
654 p2p_parse_free(&msg);
658 if (!is_zero_ether_addr(p2p->peer_filter) &&
659 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
660 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
661 "filter for " MACSTR " due to peer filter",
662 MAC2STR(p2p_dev_addr));
666 dev = p2p_create_device(p2p, p2p_dev_addr);
668 p2p_parse_free(&msg);
671 os_get_time(&dev->last_seen);
672 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
674 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
675 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
677 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
678 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
680 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
681 dev->oper_ssid_len = msg.ssid[1];
684 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
685 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
687 if (*msg.ds_params == 14)
690 ds_freq = 2407 + *msg.ds_params * 5;
691 if (freq != ds_freq) {
692 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
693 "P2P: Update Listen frequency based on DS "
694 "Parameter Set IE: %d -> %d MHz",
700 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
701 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
702 "P2P: Update Listen frequency based on scan "
703 "results (" MACSTR " %d -> %d MHz (DS param %d)",
704 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
705 freq, msg.ds_params ? *msg.ds_params : -1);
708 dev->listen_freq = freq;
710 dev->oper_freq = freq;
712 dev->info.level = level;
714 p2p_copy_wps_info(dev, 0, &msg);
716 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
717 wpabuf_free(dev->info.wps_vendor_ext[i]);
718 dev->info.wps_vendor_ext[i] = NULL;
721 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
722 if (msg.wps_vendor_ext[i] == NULL)
724 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
725 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
726 if (dev->info.wps_vendor_ext[i] == NULL)
730 if (msg.wfd_subelems) {
731 wpabuf_free(dev->info.wfd_subelems);
732 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
736 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
737 msg.group_info, msg.group_info_len);
740 p2p_parse_free(&msg);
742 if (p2p_pending_sd_req(p2p, dev))
743 dev->flags |= P2P_DEV_SD_SCHEDULE;
745 if (dev->flags & P2P_DEV_REPORTED)
748 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
749 "P2P: Peer found with Listen frequency %d MHz", freq);
750 if (dev->flags & P2P_DEV_USER_REJECTED) {
751 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
752 "P2P: Do not report rejected device");
756 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
757 !(dev->flags & P2P_DEV_REPORTED_ONCE));
758 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
764 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
768 if (p2p->go_neg_peer == dev) {
770 * If GO Negotiation is in progress, report that it has failed.
772 p2p_go_neg_failed(p2p, dev, -1);
773 p2p->go_neg_peer = NULL;
775 if (p2p->invite_peer == dev)
776 p2p->invite_peer = NULL;
777 if (p2p->sd_peer == dev)
779 if (p2p->pending_client_disc_go == dev)
780 p2p->pending_client_disc_go = NULL;
782 /* dev_lost() device, but only if it was previously dev_found() */
783 if (dev->flags & P2P_DEV_REPORTED_ONCE)
784 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
785 dev->info.p2p_device_addr);
787 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
788 wpabuf_free(dev->info.wps_vendor_ext[i]);
789 dev->info.wps_vendor_ext[i] = NULL;
792 wpabuf_free(dev->info.wfd_subelems);
798 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
800 struct p2p_channels *c;
801 struct p2p_reg_class *cla;
808 c = &p2p->cfg->channels;
809 for (cl = 0; cl < c->reg_classes; cl++) {
810 cla = &c->reg_class[cl];
811 if (cla->reg_class != p2p->last_prog_scan_class)
813 for (ch = 0; ch < cla->channels; ch++) {
814 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
824 /* Start from beginning */
825 reg_class = c->reg_class[0].reg_class;
826 channel = c->reg_class[0].channel[0];
828 /* Pick the next channel */
830 if (ch == cla->channels) {
832 if (cl == c->reg_classes)
836 reg_class = c->reg_class[cl].reg_class;
837 channel = c->reg_class[cl].channel[ch];
840 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
841 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
842 "channel: reg_class %u channel %u -> %d MHz",
843 reg_class, channel, freq);
844 p2p->last_prog_scan_class = reg_class;
845 p2p->last_prog_scan_chan = channel;
847 if (freq == 2412 || freq == 2437 || freq == 2462)
848 return 0; /* No need to add social channels */
853 static void p2p_search(struct p2p_data *p2p)
856 enum p2p_scan_type type;
857 u16 pw_id = DEV_PW_DEFAULT;
860 if (p2p->drv_in_listen) {
861 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
862 "in Listen state - wait for it to end before "
866 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
868 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
869 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
870 type = P2P_SCAN_SOCIAL_PLUS_ONE;
871 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
872 "(+ freq %u)", freq);
874 type = P2P_SCAN_SOCIAL;
875 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
878 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
879 p2p->num_req_dev_types, p2p->req_dev_types,
880 p2p->find_dev_id, pw_id);
882 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
883 "P2P: Scan request failed");
884 p2p_continue_find(p2p);
885 } else if (res == 1) {
886 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start "
887 "p2p_scan at this point - will try again after "
888 "previous scan completes");
889 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY);
891 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
892 p2p->p2p_scan_running = 1;
893 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
894 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
900 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
902 struct p2p_data *p2p = eloop_ctx;
903 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
908 static int p2p_run_after_scan(struct p2p_data *p2p)
910 struct p2p_device *dev;
911 enum p2p_after_scan op;
913 if (p2p->after_scan_tx) {
914 /* TODO: schedule p2p_run_after_scan to be called from TX
915 * status callback(?) */
916 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
917 "Action frame at p2p_scan completion");
918 p2p->cfg->send_action(p2p->cfg->cb_ctx,
919 p2p->after_scan_tx->freq,
920 p2p->after_scan_tx->dst,
921 p2p->after_scan_tx->src,
922 p2p->after_scan_tx->bssid,
923 (u8 *) (p2p->after_scan_tx + 1),
924 p2p->after_scan_tx->len,
925 p2p->after_scan_tx->wait_time);
926 os_free(p2p->after_scan_tx);
927 p2p->after_scan_tx = NULL;
929 /* For SD frames, there is a scenario, where we can receive a SD request frame during p2p_scan.
930 * At that moment, we will send the SD response from this context. After sending the SD response,
931 * we need to continue p2p_find. But if we return 1 from here, p2p_find is going to be stopped.
939 op = p2p->start_after_scan;
940 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
942 case P2P_AFTER_SCAN_NOTHING:
944 case P2P_AFTER_SCAN_LISTEN:
945 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
946 "requested Listen state");
947 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
948 p2p->pending_listen_usec / 1000);
950 case P2P_AFTER_SCAN_CONNECT:
951 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
952 "requested connect with " MACSTR,
953 MAC2STR(p2p->after_scan_peer));
954 dev = p2p_get_device(p2p, p2p->after_scan_peer);
956 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
960 p2p_connect_send(p2p, dev);
968 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
970 struct p2p_data *p2p = eloop_ctx;
972 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
973 "(running=%d)", p2p->p2p_scan_running);
974 running = p2p->p2p_scan_running;
975 /* Make sure we recover from missed scan results callback */
976 p2p->p2p_scan_running = 0;
979 p2p_run_after_scan(p2p);
983 static void p2p_free_req_dev_types(struct p2p_data *p2p)
985 p2p->num_req_dev_types = 0;
986 os_free(p2p->req_dev_types);
987 p2p->req_dev_types = NULL;
991 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
992 enum p2p_discovery_type type,
993 unsigned int num_req_dev_types, const u8 *req_dev_types,
994 const u8 *dev_id, unsigned int search_delay)
998 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
1000 if (p2p->p2p_scan_running) {
1001 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
1005 p2p_free_req_dev_types(p2p);
1006 if (req_dev_types && num_req_dev_types) {
1007 p2p->req_dev_types = os_malloc(num_req_dev_types *
1009 if (p2p->req_dev_types == NULL)
1011 os_memcpy(p2p->req_dev_types, req_dev_types,
1012 num_req_dev_types * WPS_DEV_TYPE_LEN);
1013 p2p->num_req_dev_types = num_req_dev_types;
1017 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1018 p2p->find_dev_id = p2p->find_dev_id_buf;
1020 p2p->find_dev_id = NULL;
1022 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1023 p2p_clear_timeout(p2p);
1024 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1025 p2p->find_type = type;
1026 p2p_device_clear_reported(p2p);
1027 p2p_set_state(p2p, P2P_SEARCH);
1028 p2p->search_delay = search_delay;
1029 p2p->in_search_delay = 0;
1030 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1031 p2p->last_p2p_find_timeout = timeout;
1033 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1036 case P2P_FIND_START_WITH_FULL:
1037 case P2P_FIND_PROGRESSIVE:
1038 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1039 p2p->num_req_dev_types,
1040 p2p->req_dev_types, dev_id,
1043 case P2P_FIND_ONLY_SOCIAL:
1044 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1045 p2p->num_req_dev_types,
1046 p2p->req_dev_types, dev_id,
1054 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
1055 p2p->p2p_scan_running = 1;
1056 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1057 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1059 } else if (res == 1) {
1060 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start "
1061 "p2p_scan at this point - will try again after "
1062 "previous scan completes");
1064 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY);
1065 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1067 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
1069 p2p_set_state(p2p, P2P_IDLE);
1070 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1077 int p2p_search_pending(struct p2p_data *p2p)
1082 if(p2p->state == P2P_SEARCH_WHEN_READY)
1089 int p2p_other_scan_completed(struct p2p_data *p2p)
1091 if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) {
1092 p2p_set_state(p2p, P2P_SEARCH);
1096 if (p2p->state != P2P_SEARCH_WHEN_READY)
1098 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find "
1099 "now that previous scan was completed");
1100 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type,
1101 p2p->num_req_dev_types, p2p->req_dev_types,
1102 p2p->find_dev_id, p2p->search_delay) < 0)
1108 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1110 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
1111 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1112 p2p_clear_timeout(p2p);
1113 if (p2p->state == P2P_SEARCH)
1114 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1115 p2p_set_state(p2p, P2P_IDLE);
1116 p2p_free_req_dev_types(p2p);
1117 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1118 p2p->go_neg_peer = NULL;
1119 p2p->sd_peer = NULL;
1120 p2p->invite_peer = NULL;
1121 p2p_stop_listen_for_freq(p2p, freq);
1125 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1127 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1128 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
1129 "since we are on correct channel for response");
1132 if (p2p->in_listen) {
1134 p2p_clear_timeout(p2p);
1136 if (p2p->drv_in_listen) {
1138 * The driver may not deliver callback to p2p_listen_end()
1139 * when the operation gets canceled, so clear the internal
1140 * variable that is tracking driver state.
1142 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear "
1143 "drv_in_listen (%d)", p2p->drv_in_listen);
1144 p2p->drv_in_listen = 0;
1146 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1150 void p2p_stop_find(struct p2p_data *p2p)
1152 p2p_stop_find_for_freq(p2p, 0);
1156 static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq)
1159 u8 op_reg_class, op_channel;
1160 if (p2p_freq_to_channel(p2p->cfg->country, force_freq,
1161 &op_reg_class, &op_channel) < 0) {
1162 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1163 "P2P: Unsupported frequency %u MHz",
1167 if (!p2p_channels_includes(&p2p->cfg->channels, op_reg_class,
1169 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1170 "P2P: Frequency %u MHz (oper_class %u "
1171 "channel %u) not allowed for P2P",
1172 force_freq, op_reg_class, op_channel);
1175 p2p->op_reg_class = op_reg_class;
1176 p2p->op_channel = op_channel;
1178 p2p->channels.reg_classes = 1;
1179 p2p->channels.reg_class[0].channels = 1;
1180 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1181 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1183 if(p2p->cfg->p2p_concurrency == P2P_MULTI_CHANNEL_CONCURRENT) {
1184 /* We we are requesting for a preferred channel. But since
1185 * are multichannel concurrent, we have to poplulate the
1186 * p2p_channels with list of channels that we support.
1189 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "Full channel list");
1191 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1192 sizeof(struct p2p_channels));
1195 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "Single channel list %d", p2p->op_channel);
1197 p2p->channels.reg_classes = 1;
1198 p2p->channels.reg_class[0].channels = 1;
1199 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1200 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1204 u8 op_reg_class, op_channel;
1206 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1207 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1208 p2p_freq_to_channel(p2p->cfg->country,
1209 p2p->best_freq_overall,
1210 &op_reg_class, &op_channel) == 0) {
1211 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1212 "P2P: Select best overall channel as "
1213 "operating channel preference");
1214 p2p->op_reg_class = op_reg_class;
1215 p2p->op_channel = op_channel;
1216 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1217 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1218 p2p_freq_to_channel(p2p->cfg->country,
1220 &op_reg_class, &op_channel) ==
1222 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1223 "P2P: Select best 5 GHz channel as "
1224 "operating channel preference");
1225 p2p->op_reg_class = op_reg_class;
1226 p2p->op_channel = op_channel;
1227 } else if (!p2p->cfg->cfg_op_channel &&
1228 p2p->best_freq_24 > 0 &&
1229 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1230 p2p_freq_to_channel(p2p->cfg->country,
1232 &op_reg_class, &op_channel) ==
1234 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1235 "P2P: Select best 2.4 GHz channel as "
1236 "operating channel preference");
1237 p2p->op_reg_class = op_reg_class;
1238 p2p->op_channel = op_channel;
1240 p2p->op_reg_class = p2p->cfg->op_reg_class;
1241 p2p->op_channel = p2p->cfg->op_channel;
1244 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1245 sizeof(struct p2p_channels));
1247 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1248 "P2P: Own preference for operation channel: "
1249 "Operating Class %u Channel %u%s",
1250 p2p->op_reg_class, p2p->op_channel,
1251 force_freq ? " (forced)" : "");
1257 static void p2p_set_dev_persistent(struct p2p_device *dev,
1258 int persistent_group)
1260 switch (persistent_group) {
1262 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1263 P2P_DEV_PREFER_PERSISTENT_RECONN);
1266 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1267 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1270 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1271 P2P_DEV_PREFER_PERSISTENT_RECONN;
1277 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1278 enum p2p_wps_method wps_method,
1279 int go_intent, const u8 *own_interface_addr,
1280 unsigned int force_freq, int persistent_group,
1281 const u8 *force_ssid, size_t force_ssid_len,
1282 int pd_before_go_neg)
1284 struct p2p_device *dev;
1286 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1287 "P2P: Request to start group negotiation - peer=" MACSTR
1288 " GO Intent=%d Intended Interface Address=" MACSTR
1289 " wps_method=%d persistent_group=%d pd_before_go_neg=%d force_freq %d",
1290 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1291 wps_method, persistent_group, pd_before_go_neg, force_freq);
1293 if (p2p_prepare_channel(p2p, force_freq) < 0)
1296 dev = p2p_get_device(p2p, peer_addr);
1297 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1298 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1299 "P2P: Cannot connect to unknown P2P Device " MACSTR,
1300 MAC2STR(peer_addr));
1304 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1305 if (!(dev->info.dev_capab &
1306 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1307 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1308 "P2P: Cannot connect to P2P Device " MACSTR
1309 " that is in a group and is not discoverable",
1310 MAC2STR(peer_addr));
1313 if (dev->oper_freq <= 0) {
1314 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1315 "P2P: Cannot connect to P2P Device " MACSTR
1316 " with incomplete information",
1317 MAC2STR(peer_addr));
1322 * First, try to connect directly. If the peer does not
1323 * acknowledge frames, assume it is sleeping and use device
1324 * discoverability via the GO at that point.
1330 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1331 force_ssid, force_ssid_len);
1332 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1333 p2p->ssid_len = force_ssid_len;
1337 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1338 dev->flags &= ~P2P_DEV_USER_REJECTED;
1339 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1340 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1341 if (pd_before_go_neg)
1342 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1344 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1345 dev->connect_reqs = 0;
1346 dev->go_neg_req_sent = 0;
1347 dev->go_state = UNKNOWN_GO;
1348 p2p_set_dev_persistent(dev, persistent_group);
1349 p2p->go_intent = go_intent;
1350 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1352 if (p2p->state != P2P_IDLE)
1355 if (p2p->after_scan_tx) {
1357 * We need to drop the pending frame to avoid issues with the
1358 * new GO Negotiation, e.g., when the pending frame was from a
1359 * previous attempt at starting a GO Negotiation.
1361 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
1362 "previous pending Action frame TX that was waiting "
1363 "for p2p_scan completion");
1364 os_free(p2p->after_scan_tx);
1365 p2p->after_scan_tx = NULL;
1368 dev->wps_method = wps_method;
1369 dev->status = P2P_SC_SUCCESS;
1372 dev->flags |= P2P_DEV_FORCE_FREQ;
1374 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1376 if (p2p->p2p_scan_running) {
1377 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1378 "P2P: p2p_scan running - delay connect send");
1379 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1380 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1383 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1385 return p2p_connect_send(p2p, dev);
1389 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1390 enum p2p_wps_method wps_method,
1391 int go_intent, const u8 *own_interface_addr,
1392 unsigned int force_freq, int persistent_group,
1393 const u8 *force_ssid, size_t force_ssid_len)
1395 struct p2p_device *dev;
1397 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1398 "P2P: Request to authorize group negotiation - peer=" MACSTR
1399 " GO Intent=%d Intended Interface Address=" MACSTR
1400 " wps_method=%d persistent_group=%d",
1401 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1402 wps_method, persistent_group);
1404 if (p2p_prepare_channel(p2p, force_freq) < 0)
1407 dev = p2p_get_device(p2p, peer_addr);
1409 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1410 "P2P: Cannot authorize unknown P2P Device " MACSTR,
1411 MAC2STR(peer_addr));
1417 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1418 force_ssid, force_ssid_len);
1419 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1420 p2p->ssid_len = force_ssid_len;
1424 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1425 dev->flags &= ~P2P_DEV_USER_REJECTED;
1426 dev->go_neg_req_sent = 0;
1427 dev->go_state = UNKNOWN_GO;
1428 p2p_set_dev_persistent(dev, persistent_group);
1429 p2p->go_intent = go_intent;
1430 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1432 dev->wps_method = wps_method;
1433 dev->status = P2P_SC_SUCCESS;
1436 dev->flags |= P2P_DEV_FORCE_FREQ;
1438 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1444 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1445 struct p2p_device *dev, struct p2p_message *msg)
1447 os_get_time(&dev->last_seen);
1449 p2p_copy_wps_info(dev, 0, msg);
1451 if (msg->listen_channel) {
1453 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1454 msg->listen_channel[3],
1455 msg->listen_channel[4]);
1457 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1458 "P2P: Unknown peer Listen channel: "
1459 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1460 msg->listen_channel[0],
1461 msg->listen_channel[1],
1462 msg->listen_channel[2],
1463 msg->listen_channel[3],
1464 msg->listen_channel[4]);
1466 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1467 "peer " MACSTR " Listen channel: %u -> %u MHz",
1468 MAC2STR(dev->info.p2p_device_addr),
1469 dev->listen_freq, freq);
1470 dev->listen_freq = freq;
1474 if (msg->wfd_subelems) {
1475 wpabuf_free(dev->info.wfd_subelems);
1476 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1479 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1480 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1481 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1482 "P2P: Completed device entry based on data from "
1483 "GO Negotiation Request");
1485 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1486 "P2P: Created device entry based on GO Neg Req: "
1487 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1489 MAC2STR(dev->info.p2p_device_addr),
1490 dev->info.dev_capab, dev->info.group_capab,
1491 dev->info.device_name, dev->listen_freq);
1494 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1496 if (dev->flags & P2P_DEV_USER_REJECTED) {
1497 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1498 "P2P: Do not report rejected device");
1502 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1503 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1504 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1508 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1510 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1511 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1512 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1513 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1514 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1518 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1520 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1521 p2p_random(params->passphrase, 8);
1526 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1528 struct p2p_go_neg_results res;
1529 int go = peer->go_state == LOCAL_GO;
1530 struct p2p_channels intersection;
1534 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1535 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
1536 "GO)", MAC2STR(peer->info.p2p_device_addr),
1537 go ? "local end" : "peer");
1539 os_memset(&res, 0, sizeof(res));
1541 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1542 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1543 res.wps_method = peer->wps_method;
1544 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1545 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1546 res.persistent_group = 2;
1548 res.persistent_group = 1;
1552 /* Setup AP mode for WPS provisioning */
1553 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1556 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1557 res.ssid_len = p2p->ssid_len;
1558 p2p_random(res.passphrase, 8);
1560 res.freq = peer->oper_freq;
1561 if (p2p->ssid_len) {
1562 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1563 res.ssid_len = p2p->ssid_len;
1567 p2p_channels_intersect(&p2p->channels, &peer->channels,
1570 for (i = 0; i < intersection.reg_classes; i++) {
1571 struct p2p_reg_class *c = &intersection.reg_class[i];
1572 if (freqs + 1 == P2P_MAX_CHANNELS)
1574 for (j = 0; j < c->channels; j++) {
1576 if (freqs + 1 == P2P_MAX_CHANNELS)
1578 freq = p2p_channel_to_freq(peer->country, c->reg_class,
1582 res.freq_list[freqs++] = freq;
1586 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1588 p2p_clear_timeout(p2p);
1590 peer->go_neg_req_sent = 0;
1591 peer->wps_method = WPS_NOT_READY;
1593 p2p_set_state(p2p, P2P_PROVISIONING);
1594 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1598 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1599 const u8 *data, size_t len, int rx_freq)
1601 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1602 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1603 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1609 case P2P_GO_NEG_REQ:
1610 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1612 case P2P_GO_NEG_RESP:
1613 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1615 case P2P_GO_NEG_CONF:
1616 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1618 case P2P_INVITATION_REQ:
1619 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1622 case P2P_INVITATION_RESP:
1623 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1625 case P2P_PROV_DISC_REQ:
1626 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1628 case P2P_PROV_DISC_RESP:
1629 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1631 case P2P_DEV_DISC_REQ:
1632 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1634 case P2P_DEV_DISC_RESP:
1635 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1638 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1639 "P2P: Unsupported P2P Public Action frame type %d",
1646 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1647 const u8 *sa, const u8 *bssid, const u8 *data,
1648 size_t len, int freq)
1654 case WLAN_PA_VENDOR_SPECIFIC:
1659 if (WPA_GET_BE24(data) != OUI_WFA)
1667 if (*data != P2P_OUI_TYPE)
1670 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1672 case WLAN_PA_GAS_INITIAL_REQ:
1673 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1675 case WLAN_PA_GAS_INITIAL_RESP:
1676 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1678 case WLAN_PA_GAS_COMEBACK_REQ:
1679 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1681 case WLAN_PA_GAS_COMEBACK_RESP:
1682 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1688 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1689 const u8 *bssid, u8 category,
1690 const u8 *data, size_t len, int freq)
1692 if (category == WLAN_ACTION_PUBLIC) {
1693 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1697 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1703 if (WPA_GET_BE24(data) != OUI_WFA)
1708 if (*data != P2P_OUI_TYPE)
1713 /* P2P action frame */
1714 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1715 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1716 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1722 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1723 "P2P: Received P2P Action - Notice of Absence");
1726 case P2P_PRESENCE_REQ:
1727 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1729 case P2P_PRESENCE_RESP:
1730 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1732 case P2P_GO_DISC_REQ:
1733 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1736 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1737 "P2P: Received P2P Action - unknown type %u", data[0]);
1743 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1745 struct p2p_data *p2p = eloop_ctx;
1746 if (p2p->go_neg_peer == NULL)
1748 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1749 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1750 p2p_connect_send(p2p, p2p->go_neg_peer);
1754 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1756 struct p2p_data *p2p = eloop_ctx;
1757 if (p2p->invite_peer == NULL)
1759 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1760 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1764 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1765 const u8 *ie, size_t ie_len)
1767 struct p2p_message msg;
1768 struct p2p_device *dev;
1770 os_memset(&msg, 0, sizeof(msg));
1771 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1773 p2p_parse_free(&msg);
1774 return; /* not a P2P probe */
1777 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1778 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1780 /* The Probe Request is not part of P2P Device Discovery. It is
1781 * not known whether the source address of the frame is the P2P
1782 * Device Address or P2P Interface Address. Do not add a new
1783 * peer entry based on this frames.
1785 p2p_parse_free(&msg);
1789 dev = p2p_get_device(p2p, addr);
1791 if (dev->country[0] == 0 && msg.listen_channel)
1792 os_memcpy(dev->country, msg.listen_channel, 3);
1793 os_get_time(&dev->last_seen);
1794 p2p_parse_free(&msg);
1795 return; /* already known */
1798 dev = p2p_create_device(p2p, addr);
1800 p2p_parse_free(&msg);
1804 os_get_time(&dev->last_seen);
1805 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1807 if (msg.listen_channel) {
1808 os_memcpy(dev->country, msg.listen_channel, 3);
1809 dev->listen_freq = p2p_channel_to_freq(dev->country,
1810 msg.listen_channel[3],
1811 msg.listen_channel[4]);
1814 p2p_copy_wps_info(dev, 1, &msg);
1816 if (msg.wfd_subelems) {
1817 wpabuf_free(dev->info.wfd_subelems);
1818 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1821 p2p_parse_free(&msg);
1823 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1824 "P2P: Created device entry based on Probe Req: " MACSTR
1825 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1826 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1827 dev->info.group_capab, dev->info.device_name,
1832 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1834 struct p2p_message *msg)
1836 struct p2p_device *dev;
1838 dev = p2p_get_device(p2p, addr);
1840 os_get_time(&dev->last_seen);
1841 return dev; /* already known */
1844 dev = p2p_create_device(p2p, addr);
1848 p2p_add_dev_info(p2p, addr, dev, msg);
1854 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1856 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1858 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1859 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1860 WPA_GET_BE16(&req_dev_type[6]) == 0)
1861 return 1; /* Category match with wildcard OUI/sub-category */
1866 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1867 size_t num_req_dev_type)
1870 for (i = 0; i < num_req_dev_type; i++) {
1871 if (dev_type_match(dev_type, req_dev_type[i]))
1879 * p2p_match_dev_type - Match local device type with requested type
1880 * @p2p: P2P module context from p2p_init()
1881 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1882 * Returns: 1 on match, 0 on mismatch
1884 * This function can be used to match the Requested Device Type attribute in
1885 * WPS IE with the local device types for deciding whether to reply to a Probe
1888 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1890 struct wps_parse_attr attr;
1893 if (wps_parse_msg(wps, &attr))
1894 return 1; /* assume no Requested Device Type attributes */
1896 if (attr.num_req_dev_type == 0)
1897 return 1; /* no Requested Device Type attributes -> match */
1899 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1900 attr.num_req_dev_type))
1901 return 1; /* Own Primary Device Type matches */
1903 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1904 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1906 attr.num_req_dev_type))
1907 return 1; /* Own Secondary Device Type matches */
1909 /* No matching device type found */
1914 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1921 #ifdef CONFIG_WIFI_DISPLAY
1922 if (p2p->wfd_ie_probe_resp)
1923 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1924 #endif /* CONFIG_WIFI_DISPLAY */
1926 buf = wpabuf_alloc(1000 + extra);
1930 if (p2p->go_neg_peer) {
1931 /* Advertise immediate availability of WPS credential */
1932 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1935 p2p_build_wps_ie(p2p, buf, pw_id, 1);
1937 #ifdef CONFIG_WIFI_DISPLAY
1938 if (p2p->wfd_ie_probe_resp)
1939 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1940 #endif /* CONFIG_WIFI_DISPLAY */
1943 len = p2p_buf_add_ie_hdr(buf);
1944 p2p_buf_add_capability(buf, p2p->dev_capab &
1945 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
1946 if (p2p->ext_listen_interval)
1947 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1948 p2p->ext_listen_interval);
1949 p2p_buf_add_device_info(buf, p2p, NULL);
1950 p2p_buf_update_ie_hdr(buf, len);
1956 static int is_11b(u8 rate)
1958 return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16;
1962 static int supp_rates_11b_only(struct ieee802_11_elems *elems)
1964 int num_11b = 0, num_others = 0;
1967 if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL)
1970 for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) {
1971 if (is_11b(elems->supp_rates[i]))
1977 for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len;
1979 if (is_11b(elems->ext_supp_rates[i]))
1985 return num_11b > 0 && num_others == 0;
1989 static enum p2p_probe_req_status
1990 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1991 const u8 *bssid, const u8 *ie, size_t ie_len)
1993 struct ieee802_11_elems elems;
1995 struct ieee80211_mgmt *resp;
1996 struct p2p_message msg;
1999 if (!p2p->in_listen || !p2p->drv_in_listen) {
2000 /* not in Listen state - ignore Probe Request */
2001 return P2P_PREQ_NOT_LISTEN;
2004 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2006 /* Ignore invalid Probe Request frames */
2007 return P2P_PREQ_MALFORMED;
2010 if (elems.p2p == NULL) {
2011 /* not a P2P probe - ignore it */
2012 return P2P_PREQ_NOT_P2P;
2015 if (dst && !is_broadcast_ether_addr(dst) &&
2016 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2017 /* Not sent to the broadcast address or our P2P Device Address
2019 return P2P_PREQ_NOT_PROCESSED;
2022 if (bssid && !is_broadcast_ether_addr(bssid)) {
2023 /* Not sent to the Wildcard BSSID */
2024 return P2P_PREQ_NOT_PROCESSED;
2027 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2028 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2030 /* not using P2P Wildcard SSID - ignore */
2031 return P2P_PREQ_NOT_PROCESSED;
2034 if (supp_rates_11b_only(&elems)) {
2035 /* Indicates support for 11b rates only */
2036 return P2P_PREQ_NOT_P2P;
2039 os_memset(&msg, 0, sizeof(msg));
2040 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2041 /* Could not parse P2P attributes */
2042 return P2P_PREQ_NOT_P2P;
2045 if (msg.device_id &&
2046 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2047 /* Device ID did not match */
2048 p2p_parse_free(&msg);
2049 return P2P_PREQ_NOT_PROCESSED;
2052 /* Check Requested Device Type match */
2053 if (msg.wps_attributes &&
2054 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2055 /* No match with Requested Device Type */
2056 p2p_parse_free(&msg);
2057 return P2P_PREQ_NOT_PROCESSED;
2059 p2p_parse_free(&msg);
2061 if (!p2p->cfg->send_probe_resp) {
2062 /* Response generated elsewhere */
2063 return P2P_PREQ_NOT_PROCESSED;
2066 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2067 "P2P: Reply to P2P Probe Request in Listen state");
2070 * We do not really have a specific BSS that this frame is advertising,
2071 * so build a frame that has some information in valid format. This is
2072 * really only used for discovery purposes, not to learn exact BSS
2075 ies = p2p_build_probe_resp_ies(p2p);
2077 return P2P_PREQ_NOT_PROCESSED;
2079 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2082 return P2P_PREQ_NOT_PROCESSED;
2086 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2088 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2089 (WLAN_FC_STYPE_PROBE_RESP << 4));
2090 os_memcpy(resp->da, addr, ETH_ALEN);
2091 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2092 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2093 resp->u.probe_resp.beacon_int = host_to_le16(100);
2094 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2095 resp->u.probe_resp.capab_info =
2096 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2097 WLAN_CAPABILITY_PRIVACY |
2098 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2100 wpabuf_put_u8(buf, WLAN_EID_SSID);
2101 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2102 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2104 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2105 wpabuf_put_u8(buf, 8);
2106 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2107 wpabuf_put_u8(buf, 90 / 5);
2108 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2109 wpabuf_put_u8(buf, 180 / 5);
2110 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2111 wpabuf_put_u8(buf, 360 / 5);
2112 wpabuf_put_u8(buf, 480 / 5);
2113 wpabuf_put_u8(buf, 540 / 5);
2115 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2116 wpabuf_put_u8(buf, 1);
2117 wpabuf_put_u8(buf, p2p->cfg->channel);
2119 wpabuf_put_buf(buf, ies);
2122 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2126 return P2P_PREQ_NOT_PROCESSED;
2130 enum p2p_probe_req_status
2131 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2132 const u8 *bssid, const u8 *ie, size_t ie_len)
2134 enum p2p_probe_req_status res;
2136 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2138 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2140 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2142 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2144 /* Received a Probe Request from GO Negotiation peer */
2145 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2146 "P2P: Found GO Negotiation peer - try to start GO "
2147 "negotiation from timeout");
2148 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2149 return P2P_PREQ_PROCESSED;
2152 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2154 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2156 /* Received a Probe Request from Invite peer */
2157 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2158 "P2P: Found Invite peer - try to start Invite from "
2160 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2161 return P2P_PREQ_PROCESSED;
2168 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2169 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2178 return 0; /* WLAN AP is not a P2P manager */
2181 * (Re)Association Request - P2P IE
2182 * P2P Capability attribute (shall be present)
2183 * P2P Interface attribute (present if concurrent device and
2184 * P2P Management is enabled)
2186 tmp = wpabuf_alloc(200);
2190 lpos = p2p_buf_add_ie_hdr(tmp);
2192 if (p2p->num_groups > 0) {
2193 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2194 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2195 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2197 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2199 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2200 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2201 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2202 p2p_buf_add_p2p_interface(tmp, p2p);
2203 p2p_buf_update_ie_hdr(tmp, lpos);
2205 tmplen = wpabuf_len(tmp);
2209 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2218 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2219 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2223 struct p2p_device *peer;
2229 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2231 #ifdef CONFIG_WIFI_DISPLAY
2232 if (p2p->wfd_ie_assoc_req)
2233 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2234 #endif /* CONFIG_WIFI_DISPLAY */
2237 * (Re)Association Request - P2P IE
2238 * P2P Capability attribute (shall be present)
2239 * Extended Listen Timing (may be present)
2240 * P2P Device Info attribute (shall be present)
2242 tmp = wpabuf_alloc(200 + extra);
2246 #ifdef CONFIG_WIFI_DISPLAY
2247 if (p2p->wfd_ie_assoc_req)
2248 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2249 #endif /* CONFIG_WIFI_DISPLAY */
2251 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2253 lpos = p2p_buf_add_ie_hdr(tmp);
2254 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2255 if (p2p->ext_listen_interval)
2256 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2257 p2p->ext_listen_interval);
2258 p2p_buf_add_device_info(tmp, p2p, peer);
2259 p2p_buf_update_ie_hdr(tmp, lpos);
2261 tmplen = wpabuf_len(tmp);
2265 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2274 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2276 struct wpabuf *p2p_ie;
2279 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2283 ret = p2p_attr_text(p2p_ie, buf, end);
2284 wpabuf_free(p2p_ie);
2289 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2291 struct p2p_message msg;
2293 os_memset(&msg, 0, sizeof(msg));
2294 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2297 if (msg.p2p_device_addr) {
2298 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2300 } else if (msg.device_id) {
2301 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2308 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2310 struct wpabuf *p2p_ie;
2313 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2314 P2P_IE_VENDOR_TYPE);
2317 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2318 wpabuf_free(p2p_ie);
2323 static void p2p_clear_go_neg(struct p2p_data *p2p)
2325 p2p->go_neg_peer = NULL;
2326 p2p_clear_timeout(p2p);
2327 p2p_set_state(p2p, P2P_IDLE);
2331 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2333 if (p2p->go_neg_peer == NULL) {
2334 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2335 "P2P: No pending Group Formation - "
2336 "ignore WPS registration success notification");
2337 return; /* No pending Group Formation */
2340 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2342 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2343 "P2P: Ignore WPS registration success notification "
2344 "for " MACSTR " (GO Negotiation peer " MACSTR ")",
2346 MAC2STR(p2p->go_neg_peer->intended_addr));
2347 return; /* Ignore unexpected peer address */
2350 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2351 "P2P: Group Formation completed successfully with " MACSTR,
2354 p2p_clear_go_neg(p2p);
2358 void p2p_group_formation_failed(struct p2p_data *p2p)
2360 if (p2p->go_neg_peer == NULL) {
2361 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2362 "P2P: No pending Group Formation - "
2363 "ignore group formation failure notification");
2364 return; /* No pending Group Formation */
2367 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2368 "P2P: Group Formation failed with " MACSTR,
2369 MAC2STR(p2p->go_neg_peer->intended_addr));
2371 p2p_clear_go_neg(p2p);
2375 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2377 struct p2p_data *p2p;
2379 if (cfg->max_peers < 1)
2382 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2385 p2p->cfg = (struct p2p_config *) (p2p + 1);
2386 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2388 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2389 if (cfg->manufacturer)
2390 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2391 if (cfg->model_name)
2392 p2p->cfg->model_name = os_strdup(cfg->model_name);
2393 if (cfg->model_number)
2394 p2p->cfg->model_number = os_strdup(cfg->model_number);
2395 if (cfg->serial_number)
2396 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2397 if (cfg->pref_chan) {
2398 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2399 sizeof(struct p2p_channel));
2400 if (p2p->cfg->pref_chan) {
2401 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2402 cfg->num_pref_chan *
2403 sizeof(struct p2p_channel));
2405 p2p->cfg->num_pref_chan = 0;
2409 /* 100ms listen time is too less to receive the response frames in some scenarios
2410 * increasing min listen time to 200ms.
2412 p2p->min_disc_int = 2;
2413 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */
2414 p2p->sd_dev_list = NULL;
2416 p2p->min_disc_int = 1;
2418 p2p->max_disc_int = 3;
2420 os_get_random(&p2p->next_tie_breaker, 1);
2421 p2p->next_tie_breaker &= 0x01;
2422 if (cfg->sd_request)
2423 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2424 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2425 if (cfg->concurrent_operations)
2426 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2427 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2429 dl_list_init(&p2p->devices);
2431 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2432 p2p_expiration_timeout, p2p, NULL);
2434 p2p->go_timeout = 100;
2435 p2p->client_timeout = 20;
2441 void p2p_deinit(struct p2p_data *p2p)
2443 #ifdef CONFIG_WIFI_DISPLAY
2444 wpabuf_free(p2p->wfd_ie_beacon);
2445 wpabuf_free(p2p->wfd_ie_probe_req);
2446 wpabuf_free(p2p->wfd_ie_probe_resp);
2447 wpabuf_free(p2p->wfd_ie_assoc_req);
2448 wpabuf_free(p2p->wfd_ie_invitation);
2449 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2450 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2451 wpabuf_free(p2p->wfd_ie_go_neg);
2452 wpabuf_free(p2p->wfd_dev_info);
2453 wpabuf_free(p2p->wfd_assoc_bssid);
2454 wpabuf_free(p2p->wfd_coupled_sink_info);
2455 #endif /* CONFIG_WIFI_DISPLAY */
2457 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2458 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2459 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2461 p2p_free_req_dev_types(p2p);
2462 os_free(p2p->cfg->dev_name);
2463 os_free(p2p->cfg->manufacturer);
2464 os_free(p2p->cfg->model_name);
2465 os_free(p2p->cfg->model_number);
2466 os_free(p2p->cfg->serial_number);
2467 os_free(p2p->cfg->pref_chan);
2468 os_free(p2p->groups);
2469 wpabuf_free(p2p->sd_resp);
2470 os_free(p2p->after_scan_tx);
2471 p2p_remove_wps_vendor_extensions(p2p);
2476 void p2p_flush(struct p2p_data *p2p)
2478 struct p2p_device *dev, *prev;
2480 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2482 dl_list_del(&dev->list);
2483 p2p_device_free(p2p, dev);
2486 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */
2487 p2p->sd_dev_list = NULL;
2489 p2p_free_sd_queries(p2p);
2490 os_free(p2p->after_scan_tx);
2491 p2p->after_scan_tx = NULL;
2495 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2497 struct p2p_device *dev;
2499 dev = p2p_get_device(p2p, addr);
2503 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
2506 if (p2p->go_neg_peer == dev)
2507 p2p->go_neg_peer = NULL;
2509 dev->wps_method = WPS_NOT_READY;
2510 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2511 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2513 /* Check if after_scan_tx is for this peer. If so free it */
2514 if (p2p->after_scan_tx &&
2515 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2516 os_free(p2p->after_scan_tx);
2517 p2p->after_scan_tx = NULL;
2524 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2526 os_free(p2p->cfg->dev_name);
2528 p2p->cfg->dev_name = os_strdup(dev_name);
2529 if (p2p->cfg->dev_name == NULL)
2532 p2p->cfg->dev_name = NULL;
2537 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2539 os_free(p2p->cfg->manufacturer);
2540 p2p->cfg->manufacturer = NULL;
2542 p2p->cfg->manufacturer = os_strdup(manufacturer);
2543 if (p2p->cfg->manufacturer == NULL)
2551 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2553 os_free(p2p->cfg->model_name);
2554 p2p->cfg->model_name = NULL;
2556 p2p->cfg->model_name = os_strdup(model_name);
2557 if (p2p->cfg->model_name == NULL)
2565 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2567 os_free(p2p->cfg->model_number);
2568 p2p->cfg->model_number = NULL;
2570 p2p->cfg->model_number = os_strdup(model_number);
2571 if (p2p->cfg->model_number == NULL)
2579 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2581 os_free(p2p->cfg->serial_number);
2582 p2p->cfg->serial_number = NULL;
2583 if (serial_number) {
2584 p2p->cfg->serial_number = os_strdup(serial_number);
2585 if (p2p->cfg->serial_number == NULL)
2593 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2595 p2p->cfg->config_methods = config_methods;
2599 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2601 os_memcpy(p2p->cfg->uuid, uuid, 16);
2605 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2607 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2612 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2613 size_t num_dev_types)
2615 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2616 num_dev_types = P2P_SEC_DEVICE_TYPES;
2617 p2p->cfg->num_sec_dev_types = num_dev_types;
2618 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2623 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2627 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2628 wpabuf_free(p2p->wps_vendor_ext[i]);
2629 p2p->wps_vendor_ext[i] = NULL;
2634 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2635 const struct wpabuf *vendor_ext)
2639 if (vendor_ext == NULL)
2642 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2643 if (p2p->wps_vendor_ext[i] == NULL)
2646 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2649 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2650 if (p2p->wps_vendor_ext[i] == NULL)
2657 int p2p_set_country(struct p2p_data *p2p, const char *country)
2659 os_memcpy(p2p->cfg->country, country, 3);
2664 void p2p_continue_find(struct p2p_data *p2p)
2666 struct p2p_device *dev;
2670 p2p_set_state(p2p, P2P_SEARCH);
2671 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2673 /* SD_FAIR_POLICY: We need to give chance to all devices in the device list
2674 * There may be a scenario, where a particular peer device have
2675 * not registered any query response. When we send a SD request to such device,
2676 * no response will be received. And if we continue to get probe responses from that device,
2677 * and if that device happens to be on top in our device list,
2678 * we will always continue to send SD requests always to that peer only.
2679 * We will not be able to send SD requests to other devices in that case.
2680 * This implementation keeps track of last serviced peer device.
2681 * And then takes the next one from the device list, in the next iteration.
2683 if (p2p->sd_dev_list && p2p->sd_dev_list != &p2p->devices) {
2685 if ((&dev->list == p2p->sd_dev_list) ) {
2687 if (dev->list.next == &p2p->devices)
2688 p2p->sd_dev_list = NULL;
2693 p2p->sd_dev_list = &dev->list;
2694 wpa_printf(MSG_DEBUG, "P2P: ### Servicing %p dev->flags 0x%x SD schedule %s devaddr " MACSTR,
2695 p2p->sd_dev_list, dev->flags, dev->flags & P2P_DEV_SD_SCHEDULE ? "TRUE": "FALSE",
2696 MAC2STR(dev->info.p2p_device_addr));
2698 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2699 if (p2p_start_sd(p2p, dev) == 0)
2703 } else if (dev->req_config_methods &&
2704 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2705 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2706 "pending Provision Discovery Request to "
2707 MACSTR " (config methods 0x%x)",
2708 MAC2STR(dev->info.p2p_device_addr),
2709 dev->req_config_methods);
2710 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2715 p2p_listen_in_find(p2p);
2719 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2721 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2722 "P2P: Service Discovery Query TX callback: success=%d",
2724 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2728 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2729 p2p->sd_peer = NULL;
2731 p2p_continue_find(p2p);
2735 if (p2p->sd_peer == NULL) {
2736 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2737 "P2P: No SD peer entry known");
2738 p2p_continue_find(p2p);
2742 /* Wait for response from the peer */
2743 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2744 p2p_set_timeout(p2p, 0, 200000);
2749 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2750 * @p2p: P2P module context from p2p_init()
2752 static void p2p_retry_pd(struct p2p_data *p2p)
2754 struct p2p_device *dev;
2756 if (p2p->state != P2P_IDLE)
2760 * Retry the prov disc req attempt only for the peer that the user had
2761 * requested for and provided a join has not been initiated on it
2765 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2766 if (os_memcmp(p2p->pending_pd_devaddr,
2767 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2769 if (!dev->req_config_methods)
2771 if (dev->flags & P2P_DEV_PD_FOR_JOIN)
2774 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2775 "pending Provision Discovery Request to "
2776 MACSTR " (config methods 0x%x)",
2777 MAC2STR(dev->info.p2p_device_addr),
2778 dev->req_config_methods);
2779 p2p_send_prov_disc_req(p2p, dev, 0, 0);
2785 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2787 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2788 "P2P: Provision Discovery Request TX callback: success=%d",
2792 * Postpone resetting the pending action state till after we actually
2793 * time out. This allows us to take some action like notifying any
2794 * interested parties about no response to the request.
2796 * When the timer (below) goes off we check in IDLE, SEARCH, or
2797 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2798 * requests in, if this was still pending and then raise notification.
2802 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2804 if (p2p->user_initiated_pd &&
2805 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2807 /* Retry request from timeout to avoid busy loops */
2808 p2p->pending_action_state = P2P_PENDING_PD;
2809 p2p_set_timeout(p2p, 0, 50000);
2810 } else if (p2p->state != P2P_IDLE)
2811 p2p_continue_find(p2p);
2812 else if (p2p->user_initiated_pd) {
2813 p2p->pending_action_state = P2P_PENDING_PD;
2814 p2p_set_timeout(p2p, 0, 300000);
2820 * This postponing, of resetting pending_action_state, needs to be
2821 * done only for user initiated PD requests and not internal ones.
2823 if (p2p->user_initiated_pd)
2824 p2p->pending_action_state = P2P_PENDING_PD;
2826 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2828 /* Wait for response from the peer */
2829 if (p2p->state == P2P_SEARCH)
2830 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2831 p2p_set_timeout(p2p, 0, 200000);
2835 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2836 int level, const u8 *ies, size_t ies_len)
2838 p2p_add_device(p2p, bssid, freq, level, ies, ies_len, 1);
2844 void p2p_scan_res_handled(struct p2p_data *p2p)
2846 if (!p2p->p2p_scan_running) {
2847 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2848 "running, but scan results received");
2850 p2p->p2p_scan_running = 0;
2851 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2853 if (p2p_run_after_scan(p2p))
2855 if (p2p->state == P2P_SEARCH)
2856 p2p_continue_find(p2p);
2860 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2864 #ifdef CONFIG_WIFI_DISPLAY
2865 if (p2p->wfd_ie_probe_req)
2866 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2867 #endif /* CONFIG_WIFI_DISPLAY */
2869 len = p2p_buf_add_ie_hdr(ies);
2870 p2p_buf_add_capability(ies, p2p->dev_capab &
2871 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2873 p2p_buf_add_device_id(ies, dev_id);
2874 if (p2p->cfg->reg_class && p2p->cfg->channel)
2875 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2876 p2p->cfg->reg_class,
2878 if (p2p->ext_listen_interval)
2879 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2880 p2p->ext_listen_interval);
2881 /* TODO: p2p_buf_add_operating_channel() if GO */
2882 p2p_buf_update_ie_hdr(ies, len);
2886 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2890 #ifdef CONFIG_WIFI_DISPLAY
2891 if (p2p && p2p->wfd_ie_probe_req)
2892 len += wpabuf_len(p2p->wfd_ie_probe_req);
2893 #endif /* CONFIG_WIFI_DISPLAY */
2899 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2901 return p2p_attr_text(p2p_ie, buf, end);
2905 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2907 struct p2p_device *dev = p2p->go_neg_peer;
2909 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2910 "P2P: GO Negotiation Request TX callback: success=%d",
2914 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2915 "P2P: No pending GO Negotiation");
2920 if (dev->flags & P2P_DEV_USER_REJECTED) {
2921 p2p_set_state(p2p, P2P_IDLE);
2924 } else if (dev->go_neg_req_sent) {
2925 /* Cancel the increment from p2p_connect_send() on failure */
2926 dev->go_neg_req_sent--;
2930 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2931 !is_zero_ether_addr(dev->member_in_go_dev)) {
2932 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2933 "P2P: Peer " MACSTR " did not acknowledge request - "
2934 "try to use device discoverability through its GO",
2935 MAC2STR(dev->info.p2p_device_addr));
2936 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2937 p2p_send_dev_disc_req(p2p, dev);
2942 * Use P2P find, if needed, to find the other device from its listen
2945 p2p_set_state(p2p, P2P_CONNECT);
2946 p2p_set_timeout(p2p, 0, success ? 200000 : 100000);
2950 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2952 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2953 "P2P: GO Negotiation Response TX callback: success=%d",
2955 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2956 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2957 "P2P: Ignore TX callback event - GO Negotiation is "
2958 "not running anymore");
2961 p2p_set_state(p2p, P2P_CONNECT);
2962 p2p_set_timeout(p2p, 0, 250000);
2966 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
2968 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2969 "P2P: GO Negotiation Response (failure) TX callback: "
2970 "success=%d", success);
2971 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2972 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2973 p2p->go_neg_peer->status);
2978 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2979 enum p2p_send_action_result result)
2981 struct p2p_device *dev;
2983 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2984 "P2P: GO Negotiation Confirm TX callback: result=%d",
2986 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2987 if (result == P2P_SEND_ACTION_FAILED) {
2988 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2991 if (result == P2P_SEND_ACTION_NO_ACK) {
2993 * It looks like the TX status for GO Negotiation Confirm is
2994 * often showing failure even when the peer has actually
2995 * received the frame. Since the peer may change channels
2996 * immediately after having received the frame, we may not see
2997 * an Ack for retries, so just dropping a single frame may
2998 * trigger this. To allow the group formation to succeed if the
2999 * peer did indeed receive the frame, continue regardless of
3002 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3003 "P2P: Assume GO Negotiation Confirm TX was actually "
3004 "received by the peer even though Ack was not "
3008 dev = p2p->go_neg_peer;
3012 p2p_go_complete(p2p, dev);
3016 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3017 const u8 *src, const u8 *bssid,
3018 enum p2p_send_action_result result)
3020 enum p2p_pending_action_state state;
3023 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3024 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
3025 " src=" MACSTR " bssid=" MACSTR " result=%d",
3026 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3027 MAC2STR(bssid), result);
3028 success = result == P2P_SEND_ACTION_SUCCESS;
3029 state = p2p->pending_action_state;
3030 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3032 case P2P_NO_PENDING_ACTION:
3034 case P2P_PENDING_GO_NEG_REQUEST:
3035 p2p_go_neg_req_cb(p2p, success);
3037 case P2P_PENDING_GO_NEG_RESPONSE:
3038 p2p_go_neg_resp_cb(p2p, success);
3040 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3041 p2p_go_neg_resp_failure_cb(p2p, success);
3043 case P2P_PENDING_GO_NEG_CONFIRM:
3044 p2p_go_neg_conf_cb(p2p, result);
3046 case P2P_PENDING_SD:
3047 p2p_sd_cb(p2p, success);
3049 case P2P_PENDING_PD:
3050 p2p_prov_disc_cb(p2p, success);
3052 case P2P_PENDING_INVITATION_REQUEST:
3053 p2p_invitation_req_cb(p2p, success);
3055 case P2P_PENDING_INVITATION_RESPONSE:
3056 p2p_invitation_resp_cb(p2p, success);
3058 case P2P_PENDING_DEV_DISC_REQUEST:
3059 p2p_dev_disc_req_cb(p2p, success);
3061 case P2P_PENDING_DEV_DISC_RESPONSE:
3062 p2p_dev_disc_resp_cb(p2p, success);
3064 case P2P_PENDING_GO_DISC_REQ:
3065 p2p_go_disc_req_cb(p2p, success);
3071 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3072 unsigned int duration)
3074 if (freq == p2p->pending_client_disc_freq) {
3075 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3076 "P2P: Client discoverability remain-awake completed");
3077 p2p->pending_client_disc_freq = 0;
3081 if (freq != p2p->pending_listen_freq) {
3082 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3083 "P2P: Unexpected listen callback for freq=%u "
3084 "duration=%u (pending_listen_freq=%u)",
3085 freq, duration, p2p->pending_listen_freq);
3089 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3090 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
3092 p2p->pending_listen_sec, p2p->pending_listen_usec,
3093 p2p->pending_listen_freq);
3095 p2p->drv_in_listen = freq;
3096 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3098 * Add 20 msec extra wait to avoid race condition with driver
3099 * remain-on-channel end event, i.e., give driver more time to
3100 * complete the operation before our timeout expires.
3102 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3103 p2p->pending_listen_usec + 20000);
3106 p2p->pending_listen_freq = 0;
3110 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3112 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
3113 "state (freq=%u)", freq);
3114 p2p->drv_in_listen = 0;
3116 return 0; /* Internal timeout will trigger the next step */
3118 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3119 if (p2p->go_neg_peer->connect_reqs >= 120) {
3120 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3121 "P2P: Timeout on sending GO Negotiation "
3122 "Request without getting response");
3123 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3127 p2p_set_state(p2p, P2P_CONNECT);
3128 p2p_connect_send(p2p, p2p->go_neg_peer);
3130 } else if (p2p->state == P2P_SEARCH) {
3131 if (p2p->p2p_scan_running) {
3133 * Search is already in progress. This can happen if
3134 * an Action frame RX is reported immediately after
3135 * the end of a remain-on-channel operation and the
3136 * response frame to that is sent using an offchannel
3137 * operation while in p2p_find. Avoid an attempt to
3138 * restart a scan here.
3140 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan "
3141 "already in progress - do not try to start a "
3145 if (p2p->pending_listen_freq) {
3147 * Better wait a bit if the driver is unable to start
3148 * offchannel operation for some reason. p2p_search()
3149 * will be started from internal timeout.
3151 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Listen "
3152 "operation did not seem to start - delay "
3153 "search phase to avoid busy loop");
3154 p2p_set_timeout(p2p, 0, 100000);
3157 if (p2p->search_delay) {
3158 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay "
3159 "search operation by %u ms",
3161 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3162 (p2p->search_delay % 1000) * 1000);
3173 static void p2p_timeout_connect(struct p2p_data *p2p)
3175 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3176 if (p2p->go_neg_peer &&
3177 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3178 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Wait for GO "
3179 "Negotiation Confirm timed out - assume GO "
3180 "Negotiation failed");
3181 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3184 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3185 p2p_listen_in_find(p2p);
3189 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3191 if (p2p->go_neg_peer) {
3192 if (p2p->drv_in_listen) {
3193 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
3194 "still in Listen state; wait for it to "
3199 if (p2p->go_neg_peer->connect_reqs >= 120) {
3200 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3201 "P2P: Timeout on sending GO Negotiation "
3202 "Request without getting response");
3203 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3207 p2p_set_state(p2p, P2P_CONNECT);
3208 p2p_connect_send(p2p, p2p->go_neg_peer);
3210 p2p_set_state(p2p, P2P_IDLE);
3214 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3217 * TODO: could remain constantly in Listen state for some time if there
3218 * are no other concurrent uses for the radio. For now, go to listen
3219 * state once per second to give other uses a chance to use the radio.
3221 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3222 p2p_set_timeout(p2p, 0, 500000);
3226 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3228 struct p2p_device *dev = p2p->go_neg_peer;
3231 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3232 "P2P: Unknown GO Neg peer - stop GO Neg wait");
3237 if (dev->wait_count >= 120) {
3238 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3239 "P2P: Timeout on waiting peer to become ready for GO "
3241 p2p_go_neg_failed(p2p, dev, -1);
3245 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3246 "P2P: Go to Listen state while waiting for the peer to become "
3247 "ready for GO Negotiation");
3248 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3249 p2p_listen_in_find(p2p);
3253 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3255 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3256 "P2P: Service Discovery Query timeout");
3258 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3259 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3260 p2p->sd_peer = NULL;
3262 p2p_continue_find(p2p);
3266 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3268 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3269 "P2P: Provision Discovery Request timeout");
3270 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3271 p2p_continue_find(p2p);
3275 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3277 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3280 * For user initiated PD requests that we have not gotten any responses
3281 * for while in IDLE state, we retry them a couple of times before
3284 if (!p2p->user_initiated_pd)
3287 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3288 "P2P: User initiated Provision Discovery Request timeout");
3290 if (p2p->pd_retries) {
3294 if (p2p->cfg->prov_disc_fail)
3295 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3296 p2p->pending_pd_devaddr,
3297 P2P_PROV_DISC_TIMEOUT);
3298 p2p_reset_pending_pd(p2p);
3303 static void p2p_timeout_invite(struct p2p_data *p2p)
3305 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3306 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3307 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3309 * Better remain on operating channel instead of listen channel
3310 * when running a group.
3312 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
3313 "active GO role - wait on operating channel");
3314 p2p_set_timeout(p2p, 0, 100000);
3317 p2p_listen_in_find(p2p);
3321 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3323 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3324 p2p_set_state(p2p, P2P_INVITE);
3325 p2p_invite_send(p2p, p2p->invite_peer,
3326 p2p->invite_go_dev_addr);
3328 if (p2p->invite_peer) {
3329 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3330 "P2P: Invitation Request retry limit reached");
3331 if (p2p->cfg->invitation_result)
3332 p2p->cfg->invitation_result(
3333 p2p->cfg->cb_ctx, -1, NULL);
3335 p2p_set_state(p2p, P2P_IDLE);
3340 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3342 struct p2p_data *p2p = eloop_ctx;
3344 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
3345 p2p_state_txt(p2p->state));
3349 switch (p2p->state) {
3351 /* Check if we timed out waiting for PD req */
3352 if (p2p->pending_action_state == P2P_PENDING_PD)
3353 p2p_timeout_prov_disc_req(p2p);
3356 /* Check if we timed out waiting for PD req */
3357 if (p2p->pending_action_state == P2P_PENDING_PD)
3358 p2p_timeout_prov_disc_req(p2p);
3359 if (p2p->search_delay && !p2p->in_search_delay) {
3360 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay "
3361 "search operation by %u ms",
3363 p2p->in_search_delay = 1;
3364 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3365 (p2p->search_delay % 1000) * 1000);
3368 p2p->in_search_delay = 0;
3372 p2p_timeout_connect(p2p);
3374 case P2P_CONNECT_LISTEN:
3375 p2p_timeout_connect_listen(p2p);
3379 case P2P_LISTEN_ONLY:
3380 /* Check if we timed out waiting for PD req */
3381 if (p2p->pending_action_state == P2P_PENDING_PD)
3382 p2p_timeout_prov_disc_req(p2p);
3384 if (p2p->ext_listen_only) {
3385 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3386 "P2P: Extended Listen Timing - Listen State "
3388 p2p->ext_listen_only = 0;
3389 p2p_set_state(p2p, P2P_IDLE);
3392 case P2P_WAIT_PEER_CONNECT:
3393 p2p_timeout_wait_peer_connect(p2p);
3395 case P2P_WAIT_PEER_IDLE:
3396 p2p_timeout_wait_peer_idle(p2p);
3398 case P2P_SD_DURING_FIND:
3399 p2p_timeout_sd_during_find(p2p);
3401 case P2P_PROVISIONING:
3403 case P2P_PD_DURING_FIND:
3404 p2p_timeout_prov_disc_during_find(p2p);
3407 p2p_timeout_invite(p2p);
3409 case P2P_INVITE_LISTEN:
3410 p2p_timeout_invite_listen(p2p);
3412 case P2P_SEARCH_WHEN_READY:
3414 case P2P_CONTINUE_SEARCH_WHEN_READY:
3420 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3422 struct p2p_device *dev;
3424 dev = p2p_get_device(p2p, peer_addr);
3425 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
3426 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
3428 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
3429 " unknown", MAC2STR(peer_addr));
3432 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3433 dev->flags |= P2P_DEV_USER_REJECTED;
3438 const char * p2p_wps_method_text(enum p2p_wps_method method)
3443 case WPS_PIN_DISPLAY:
3445 case WPS_PIN_KEYPAD:
3455 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3470 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3471 const u8 *addr, int next)
3473 struct p2p_device *dev;
3476 dev = p2p_get_device(p2p, addr);
3478 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3481 dev = dl_list_first(&dev->list, struct p2p_device, list);
3482 if (&dev->list == &p2p->devices)
3493 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3494 char *buf, size_t buflen)
3496 struct p2p_device *dev;
3504 dev = (struct p2p_device *) (((u8 *) info) -
3505 offsetof(struct p2p_device, info));
3511 res = os_snprintf(pos, end - pos,
3515 "interface_addr=" MACSTR "\n"
3516 "member_in_go_dev=" MACSTR "\n"
3517 "member_in_go_iface=" MACSTR "\n"
3518 "go_neg_req_sent=%d\n"
3521 "intended_addr=" MACSTR "\n"
3524 "req_config_methods=0x%x\n"
3525 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3528 "invitation_reqs=%u\n",
3529 (int) (now.sec - dev->last_seen.sec),
3531 p2p_wps_method_text(dev->wps_method),
3532 MAC2STR(dev->interface_addr),
3533 MAC2STR(dev->member_in_go_dev),
3534 MAC2STR(dev->member_in_go_iface),
3535 dev->go_neg_req_sent,
3536 p2p_go_state_text(dev->go_state),
3538 MAC2STR(dev->intended_addr),
3539 dev->country[0] ? dev->country[0] : '_',
3540 dev->country[1] ? dev->country[1] : '_',
3542 dev->req_config_methods,
3543 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3544 "[PROBE_REQ_ONLY]" : "",
3545 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3546 dev->flags & P2P_DEV_NOT_YET_READY ?
3547 "[NOT_YET_READY]" : "",
3548 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3549 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3551 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3552 "[PD_PEER_DISPLAY]" : "",
3553 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3554 "[PD_PEER_KEYPAD]" : "",
3555 dev->flags & P2P_DEV_USER_REJECTED ?
3556 "[USER_REJECTED]" : "",
3557 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3558 "[PEER_WAITING_RESPONSE]" : "",
3559 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3560 "[PREFER_PERSISTENT_GROUP]" : "",
3561 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3562 "[WAIT_GO_NEG_RESPONSE]" : "",
3563 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3564 "[WAIT_GO_NEG_CONFIRM]" : "",
3565 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3566 "[GROUP_CLIENT_ONLY]" : "",
3567 dev->flags & P2P_DEV_FORCE_FREQ ?
3568 "[FORCE_FREQ]" : "",
3569 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3570 "[PD_FOR_JOIN]" : "",
3573 dev->invitation_reqs);
3574 if (res < 0 || res >= end - pos)
3578 if (dev->ext_listen_period) {
3579 res = os_snprintf(pos, end - pos,
3580 "ext_listen_period=%u\n"
3581 "ext_listen_interval=%u\n",
3582 dev->ext_listen_period,
3583 dev->ext_listen_interval);
3584 if (res < 0 || res >= end - pos)
3589 if (dev->oper_ssid_len) {
3590 res = os_snprintf(pos, end - pos,
3592 wpa_ssid_txt(dev->oper_ssid,
3593 dev->oper_ssid_len));
3594 if (res < 0 || res >= end - pos)
3599 #ifdef CONFIG_WIFI_DISPLAY
3600 if (dev->info.wfd_subelems) {
3601 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3602 if (res < 0 || res >= end - pos)
3606 pos += wpa_snprintf_hex(pos, end - pos,
3607 wpabuf_head(dev->info.wfd_subelems),
3608 wpabuf_len(dev->info.wfd_subelems));
3610 res = os_snprintf(pos, end - pos, "\n");
3611 if (res < 0 || res >= end - pos)
3615 #endif /* CONFIG_WIFI_DISPLAY */
3621 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3623 return p2p_get_device(p2p, addr) != NULL;
3627 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3630 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3631 "discoverability enabled");
3632 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3634 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3635 "discoverability disabled");
3636 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3641 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3642 u32 duration2, u32 interval2)
3645 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3648 req = wpabuf_alloc(100);
3652 if (duration1 || interval1) {
3653 os_memset(&desc1, 0, sizeof(desc1));
3654 desc1.count_type = 1;
3655 desc1.duration = duration1;
3656 desc1.interval = interval1;
3659 if (duration2 || interval2) {
3660 os_memset(&desc2, 0, sizeof(desc2));
3661 desc2.count_type = 2;
3662 desc2.duration = duration2;
3663 desc2.interval = interval2;
3668 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3669 len = p2p_buf_add_ie_hdr(req);
3670 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3671 p2p_buf_update_ie_hdr(req, len);
3677 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3678 const u8 *own_interface_addr, unsigned int freq,
3679 u32 duration1, u32 interval1, u32 duration2,
3684 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
3685 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
3686 "int1=%u dur2=%u int2=%u",
3687 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3688 freq, duration1, interval1, duration2, interval2);
3690 req = p2p_build_presence_req(duration1, interval1, duration2,
3695 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3696 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3698 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3699 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3700 "P2P: Failed to send Action frame");
3708 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3709 size_t noa_len, u8 dialog_token)
3711 struct wpabuf *resp;
3714 resp = wpabuf_alloc(100 + noa_len);
3718 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3719 len = p2p_buf_add_ie_hdr(resp);
3720 p2p_buf_add_status(resp, status);
3722 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3723 wpabuf_put_le16(resp, noa_len);
3724 wpabuf_put_data(resp, noa, noa_len);
3726 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3727 p2p_buf_update_ie_hdr(resp, len);
3733 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3734 const u8 *sa, const u8 *data, size_t len,
3737 struct p2p_message msg;
3739 struct wpabuf *resp;
3741 struct p2p_group *group = NULL;
3746 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3747 "P2P: Received P2P Action - P2P Presence Request");
3749 for (g = 0; g < p2p->num_groups; g++) {
3750 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3752 group = p2p->groups[g];
3756 if (group == NULL) {
3757 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3758 "P2P: Ignore P2P Presence Request for unknown group "
3759 MACSTR, MAC2STR(da));
3763 if (p2p_parse(data, len, &msg) < 0) {
3764 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3765 "P2P: Failed to parse P2P Presence Request");
3766 status = P2P_SC_FAIL_INVALID_PARAMS;
3771 if (msg.noa == NULL) {
3772 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3773 "P2P: No NoA attribute in P2P Presence Request");
3774 status = P2P_SC_FAIL_INVALID_PARAMS;
3778 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3781 if (p2p->cfg->get_noa)
3782 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3786 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3787 noa_len > 0 ? noa_len : 0,
3790 p2p_parse_free(&msg);
3794 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3795 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3796 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3797 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3798 "P2P: Failed to send Action frame");
3804 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3805 const u8 *sa, const u8 *data, size_t len)
3807 struct p2p_message msg;
3809 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3810 "P2P: Received P2P Action - P2P Presence Response");
3812 if (p2p_parse(data, len, &msg) < 0) {
3813 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3814 "P2P: Failed to parse P2P Presence Response");
3818 if (msg.status == NULL || msg.noa == NULL) {
3819 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3820 "P2P: No Status or NoA attribute in P2P Presence "
3822 p2p_parse_free(&msg);
3827 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3828 "P2P: P2P Presence Request was rejected: status %u",
3830 p2p_parse_free(&msg);
3834 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3835 "P2P: P2P Presence Request was accepted");
3836 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3837 msg.noa, msg.noa_len);
3838 /* TODO: process NoA */
3839 p2p_parse_free(&msg);
3843 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3845 struct p2p_data *p2p = eloop_ctx;
3847 if (p2p->ext_listen_interval) {
3848 /* Schedule next extended listen timeout */
3849 eloop_register_timeout(p2p->ext_listen_interval_sec,
3850 p2p->ext_listen_interval_usec,
3851 p2p_ext_listen_timeout, p2p, NULL);
3854 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3856 * This should not really happen, but it looks like the Listen
3857 * command may fail is something else (e.g., a scan) was
3858 * running at an inconvenient time. As a workaround, allow new
3859 * Extended Listen operation to be started.
3861 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
3862 "Extended Listen operation had not been completed - "
3864 p2p->ext_listen_only = 0;
3865 p2p_set_state(p2p, P2P_IDLE);
3868 if (p2p->state != P2P_IDLE) {
3869 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
3870 "Listen timeout in active state (%s)",
3871 p2p_state_txt(p2p->state));
3875 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
3876 p2p->ext_listen_only = 1;
3877 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3878 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
3879 "Listen state for Extended Listen Timing");
3880 p2p->ext_listen_only = 0;
3885 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3886 unsigned int interval)
3888 if (period > 65535 || interval > 65535 || period > interval ||
3889 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3890 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3891 "P2P: Invalid Extended Listen Timing request: "
3892 "period=%u interval=%u", period, interval);
3896 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3898 if (interval == 0) {
3899 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3900 "P2P: Disabling Extended Listen Timing");
3901 p2p->ext_listen_period = 0;
3902 p2p->ext_listen_interval = 0;
3906 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3907 "P2P: Enabling Extended Listen Timing: period %u msec, "
3908 "interval %u msec", period, interval);
3909 p2p->ext_listen_period = period;
3910 p2p->ext_listen_interval = interval;
3911 p2p->ext_listen_interval_sec = interval / 1000;
3912 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3914 eloop_register_timeout(p2p->ext_listen_interval_sec,
3915 p2p->ext_listen_interval_usec,
3916 p2p_ext_listen_timeout, p2p, NULL);
3922 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3923 const u8 *ie, size_t ie_len)
3925 struct p2p_message msg;
3927 if (bssid == NULL || ie == NULL)
3930 os_memset(&msg, 0, sizeof(msg));
3931 if (p2p_parse_ies(ie, ie_len, &msg))
3933 if (msg.minor_reason_code == NULL)
3936 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3937 "P2P: Deauthentication notification BSSID " MACSTR
3938 " reason_code=%u minor_reason_code=%u",
3939 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3941 p2p_parse_free(&msg);
3945 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3946 const u8 *ie, size_t ie_len)
3948 struct p2p_message msg;
3950 if (bssid == NULL || ie == NULL)
3953 os_memset(&msg, 0, sizeof(msg));
3954 if (p2p_parse_ies(ie, ie_len, &msg))
3956 if (msg.minor_reason_code == NULL)
3959 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3960 "P2P: Disassociation notification BSSID " MACSTR
3961 " reason_code=%u minor_reason_code=%u",
3962 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3964 p2p_parse_free(&msg);
3968 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3971 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3972 "Device operations enabled");
3973 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3975 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3976 "Device operations disabled");
3977 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3982 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3984 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
3987 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
3988 "reg_class %u channel %u", reg_class, channel);
3989 p2p->cfg->reg_class = reg_class;
3990 p2p->cfg->channel = channel;
3996 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3998 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
3999 if (postfix == NULL) {
4000 p2p->cfg->ssid_postfix_len = 0;
4003 if (len > sizeof(p2p->cfg->ssid_postfix))
4005 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4006 p2p->cfg->ssid_postfix_len = len;
4011 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4014 if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel)
4018 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: "
4019 "reg_class %u channel %u", op_reg_class, op_channel);
4020 p2p->cfg->op_reg_class = op_reg_class;
4021 p2p->cfg->op_channel = op_channel;
4022 p2p->cfg->cfg_op_channel = cfg_op_channel;
4027 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4028 const struct p2p_channel *pref_chan)
4030 struct p2p_channel *n;
4033 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4036 os_memcpy(n, pref_chan,
4037 num_pref_chan * sizeof(struct p2p_channel));
4041 os_free(p2p->cfg->pref_chan);
4042 p2p->cfg->pref_chan = n;
4043 p2p->cfg->num_pref_chan = num_pref_chan;
4049 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4052 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4053 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4055 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4060 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4063 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4066 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4071 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4073 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4074 if (is_zero_ether_addr(p2p->peer_filter))
4075 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
4078 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
4079 "filter for " MACSTR, MAC2STR(p2p->peer_filter));
4083 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4085 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
4086 enabled ? "enabled" : "disabled");
4087 if (p2p->cross_connect == enabled)
4089 p2p->cross_connect = enabled;
4090 /* TODO: may need to tear down any action group where we are GO(?) */
4094 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4096 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4099 if (dev->oper_freq <= 0)
4101 return dev->oper_freq;
4105 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4107 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
4108 enabled ? "enabled" : "disabled");
4109 p2p->cfg->p2p_intra_bss = enabled;
4113 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
4115 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
4116 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4120 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4121 const u8 *src, const u8 *bssid, const u8 *buf,
4122 size_t len, unsigned int wait_time)
4124 if (p2p->p2p_scan_running) {
4125 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
4126 "frame TX until p2p_scan completes");
4127 if (p2p->after_scan_tx) {
4128 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
4129 "previous pending Action frame TX");
4130 os_free(p2p->after_scan_tx);
4132 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4134 if (p2p->after_scan_tx == NULL)
4136 p2p->after_scan_tx->freq = freq;
4137 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4138 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4139 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4140 p2p->after_scan_tx->len = len;
4141 p2p->after_scan_tx->wait_time = wait_time;
4142 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4146 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4147 buf, len, wait_time);
4151 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4154 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
4155 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall);
4156 p2p->best_freq_24 = freq_24;
4157 p2p->best_freq_5 = freq_5;
4158 p2p->best_freq_overall = freq_overall;
4162 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4164 if (p2p == NULL || p2p->go_neg_peer == NULL)
4166 return p2p->go_neg_peer->info.p2p_device_addr;
4170 const struct p2p_peer_info *
4171 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4173 struct p2p_device *dev;
4176 dev = p2p_get_device(p2p, addr);
4181 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4187 dev = dl_list_first(&dev->list,
4190 if (&dev->list == &p2p->devices)
4192 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4195 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4198 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4199 dev = dl_list_first(&dev->list,
4202 if (&dev->list == &p2p->devices)
4211 int p2p_search_in_progress(struct p2p_data *p2p)
4216 return p2p->state == P2P_SEARCH;
4220 int p2p_in_progress(struct p2p_data *p2p)
4224 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY ||
4225 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY)
4227 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4231 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4235 p2p->go_timeout = go_timeout;
4236 p2p->client_timeout = client_timeout;
4241 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay)
4243 if (p2p && p2p->search_delay < delay)
4244 p2p->search_delay = delay;
4248 #ifdef CONFIG_WIFI_DISPLAY
4250 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4253 struct p2p_group *group;
4255 for (g = 0; g < p2p->num_groups; g++) {
4256 group = p2p->groups[g];
4257 p2p_group_update_ies(group);
4262 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4264 wpabuf_free(p2p->wfd_ie_beacon);
4265 p2p->wfd_ie_beacon = ie;
4266 p2p_update_wfd_ie_groups(p2p);
4271 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4273 wpabuf_free(p2p->wfd_ie_probe_req);
4274 p2p->wfd_ie_probe_req = ie;
4279 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4281 wpabuf_free(p2p->wfd_ie_probe_resp);
4282 p2p->wfd_ie_probe_resp = ie;
4283 p2p_update_wfd_ie_groups(p2p);
4288 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4290 wpabuf_free(p2p->wfd_ie_assoc_req);
4291 p2p->wfd_ie_assoc_req = ie;
4296 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4298 wpabuf_free(p2p->wfd_ie_invitation);
4299 p2p->wfd_ie_invitation = ie;
4304 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4306 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4307 p2p->wfd_ie_prov_disc_req = ie;
4312 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4314 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4315 p2p->wfd_ie_prov_disc_resp = ie;
4320 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4322 wpabuf_free(p2p->wfd_ie_go_neg);
4323 p2p->wfd_ie_go_neg = ie;
4328 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4330 wpabuf_free(p2p->wfd_dev_info);
4332 p2p->wfd_dev_info = wpabuf_dup(elem);
4333 if (p2p->wfd_dev_info == NULL)
4336 p2p->wfd_dev_info = NULL;
4342 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4344 wpabuf_free(p2p->wfd_assoc_bssid);
4346 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4347 if (p2p->wfd_assoc_bssid == NULL)
4350 p2p->wfd_assoc_bssid = NULL;
4356 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4357 const struct wpabuf *elem)
4359 wpabuf_free(p2p->wfd_coupled_sink_info);
4361 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4362 if (p2p->wfd_coupled_sink_info == NULL)
4365 p2p->wfd_coupled_sink_info = NULL;
4370 #endif /* CONFIG_WIFI_DISPLAY */