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 "wps/wps_i.h"
20 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
21 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
22 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
23 const u8 *sa, const u8 *data, size_t len,
25 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
26 const u8 *sa, const u8 *data,
28 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
29 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
33 * p2p_scan recovery timeout
35 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
36 * timeout for this to avoid hitting P2P timeout unnecessarily.
38 #define P2P_SCAN_TIMEOUT 35
41 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
42 * entries will be removed
44 #define P2P_PEER_EXPIRATION_AGE 300
46 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
48 static void p2p_expire_peers(struct p2p_data *p2p)
50 struct p2p_device *dev, *n;
55 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
56 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
59 if (p2p->cfg->go_connected &&
60 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
61 dev->info.p2p_device_addr)) {
63 * We are connected as a client to a group in which the
64 * peer is the GO, so do not expire the peer entry.
66 os_get_time(&dev->last_seen);
70 for (i = 0; i < p2p->num_groups; i++) {
71 if (p2p_group_is_client_connected(
72 p2p->groups[i], dev->info.p2p_device_addr))
75 if (i < p2p->num_groups) {
77 * The peer is connected as a client in a group where
78 * we are the GO, so do not expire the peer entry.
80 os_get_time(&dev->last_seen);
84 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
85 MAC2STR(dev->info.p2p_device_addr));
86 dl_list_del(&dev->list);
87 p2p_device_free(p2p, dev);
92 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
94 struct p2p_data *p2p = eloop_ctx;
95 p2p_expire_peers(p2p);
96 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
97 p2p_expiration_timeout, p2p, NULL);
101 static const char * p2p_state_txt(int state)
110 case P2P_CONNECT_LISTEN:
111 return "CONNECT_LISTEN";
114 case P2P_LISTEN_ONLY:
115 return "LISTEN_ONLY";
116 case P2P_WAIT_PEER_CONNECT:
117 return "WAIT_PEER_CONNECT";
118 case P2P_WAIT_PEER_IDLE:
119 return "WAIT_PEER_IDLE";
120 case P2P_SD_DURING_FIND:
121 return "SD_DURING_FIND";
122 case P2P_PROVISIONING:
123 return "PROVISIONING";
124 case P2P_PD_DURING_FIND:
125 return "PD_DURING_FIND";
128 case P2P_INVITE_LISTEN:
129 return "INVITE_LISTEN";
130 case P2P_SEARCH_WHEN_READY:
131 return "SEARCH_WHEN_READY";
132 case P2P_CONTINUE_SEARCH_WHEN_READY:
133 return "CONTINUE_SEARCH_WHEN_READY";
140 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
142 struct p2p_device *dev = NULL;
147 dev = p2p_get_device(p2p, addr);
149 return dev->wps_prov_info;
155 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
157 struct p2p_device *dev = NULL;
162 dev = p2p_get_device(p2p, addr);
164 dev->wps_prov_info = 0;
168 void p2p_set_state(struct p2p_data *p2p, int new_state)
170 p2p_dbg(p2p, "State %s -> %s",
171 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
172 p2p->state = new_state;
176 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
178 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
179 p2p_state_txt(p2p->state), sec, usec);
180 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
181 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
185 void p2p_clear_timeout(struct p2p_data *p2p)
187 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
188 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
192 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
195 struct p2p_go_neg_results res;
196 p2p_clear_timeout(p2p);
197 p2p_set_state(p2p, P2P_IDLE);
198 if (p2p->go_neg_peer) {
199 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
200 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
202 p2p->go_neg_peer = NULL;
204 os_memset(&res, 0, sizeof(res));
207 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
209 os_memcpy(res.peer_interface_addr, peer->intended_addr,
212 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
216 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
222 p2p_dbg(p2p, "Starting short listen state (state=%s)",
223 p2p_state_txt(p2p->state));
225 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
227 p2p_dbg(p2p, "Unknown regulatory class/channel");
231 os_get_random((u8 *) &r, sizeof(r));
232 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
233 p2p->min_disc_int) * 100;
234 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
235 tu = p2p->max_disc_tu;
236 if (!dev_disc && tu < 100)
237 tu = 100; /* Need to wait in non-device discovery use cases */
238 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
239 tu = p2p->cfg->max_listen * 1000 / 1024;
242 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
243 p2p_set_timeout(p2p, 0, 0);
247 p2p->pending_listen_freq = freq;
248 p2p->pending_listen_sec = 0;
249 p2p->pending_listen_usec = 1024 * tu;
251 ies = p2p_build_probe_resp_ies(p2p);
255 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
257 p2p_dbg(p2p, "Failed to start listen mode");
258 p2p->pending_listen_freq = 0;
264 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
269 p2p_dbg(p2p, "Going to listen(only) state");
271 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
273 p2p_dbg(p2p, "Unknown regulatory class/channel");
277 p2p->pending_listen_freq = freq;
278 p2p->pending_listen_sec = timeout / 1000;
279 p2p->pending_listen_usec = (timeout % 1000) * 1000;
281 if (p2p->p2p_scan_running) {
282 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
283 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
286 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
287 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
291 ies = p2p_build_probe_resp_ies(p2p);
295 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
296 p2p_dbg(p2p, "Failed to start listen mode");
297 p2p->pending_listen_freq = 0;
303 p2p_set_state(p2p, P2P_LISTEN_ONLY);
309 static void p2p_device_clear_reported(struct p2p_data *p2p)
311 struct p2p_device *dev;
312 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
313 dev->flags &= ~P2P_DEV_REPORTED;
318 * p2p_get_device - Fetch a peer entry
319 * @p2p: P2P module context from p2p_init()
320 * @addr: P2P Device Address of the peer
321 * Returns: Pointer to the device entry or %NULL if not found
323 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
325 struct p2p_device *dev;
326 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
327 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
335 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
336 * @p2p: P2P module context from p2p_init()
337 * @addr: P2P Interface Address of the peer
338 * Returns: Pointer to the device entry or %NULL if not found
340 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
343 struct p2p_device *dev;
344 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
345 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
353 * p2p_create_device - Create a peer entry
354 * @p2p: P2P module context from p2p_init()
355 * @addr: P2P Device Address of the peer
356 * Returns: Pointer to the device entry or %NULL on failure
358 * If there is already an entry for the peer, it will be returned instead of
359 * creating a new one.
361 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
364 struct p2p_device *dev, *oldest = NULL;
367 dev = p2p_get_device(p2p, addr);
371 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
373 if (oldest == NULL ||
374 os_time_before(&dev->last_seen, &oldest->last_seen))
377 if (count + 1 > p2p->cfg->max_peers && oldest) {
378 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
379 dl_list_del(&oldest->list);
380 p2p_device_free(p2p, oldest);
383 dev = os_zalloc(sizeof(*dev));
386 dl_list_add(&p2p->devices, &dev->list);
387 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
393 static void p2p_copy_client_info(struct p2p_device *dev,
394 struct p2p_client_info *cli)
396 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
397 dev->info.device_name[cli->dev_name_len] = '\0';
398 dev->info.dev_capab = cli->dev_capab;
399 dev->info.config_methods = cli->config_methods;
400 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
401 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
402 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
403 dev->info.wps_sec_dev_type_list_len);
407 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
408 const u8 *go_interface_addr, int freq,
409 const u8 *gi, size_t gi_len)
411 struct p2p_group_info info;
413 struct p2p_device *dev;
418 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
422 * Clear old data for this group; if the devices are still in the
423 * group, the information will be restored in the loop following this.
425 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
426 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
428 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
429 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
433 for (c = 0; c < info.num_clients; c++) {
434 struct p2p_client_info *cli = &info.client[c];
435 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
437 continue; /* ignore our own entry */
438 dev = p2p_get_device(p2p, cli->p2p_device_addr);
440 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
441 P2P_DEV_PROBE_REQ_ONLY)) {
443 * Update information since we have not
444 * received this directly from the client.
446 p2p_copy_client_info(dev, cli);
449 * Need to update P2P Client Discoverability
450 * flag since it is valid only in P2P Group
453 dev->info.dev_capab &=
454 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
455 dev->info.dev_capab |=
457 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
459 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
460 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
463 dev = p2p_create_device(p2p, cli->p2p_device_addr);
466 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
467 p2p_copy_client_info(dev, cli);
468 dev->oper_freq = freq;
469 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
470 dev->info.p2p_device_addr,
472 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
475 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
477 os_get_time(&dev->last_seen);
478 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
479 os_memcpy(dev->member_in_go_iface, go_interface_addr,
487 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
488 int probe_req, const struct p2p_message *msg)
490 os_memcpy(dev->info.device_name, msg->device_name,
491 sizeof(dev->info.device_name));
493 if (msg->manufacturer &&
494 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
495 os_memset(dev->info.manufacturer, 0,
496 sizeof(dev->info.manufacturer));
497 os_memcpy(dev->info.manufacturer, msg->manufacturer,
498 msg->manufacturer_len);
501 if (msg->model_name &&
502 msg->model_name_len < sizeof(dev->info.model_name)) {
503 os_memset(dev->info.model_name, 0,
504 sizeof(dev->info.model_name));
505 os_memcpy(dev->info.model_name, msg->model_name,
506 msg->model_name_len);
509 if (msg->model_number &&
510 msg->model_number_len < sizeof(dev->info.model_number)) {
511 os_memset(dev->info.model_number, 0,
512 sizeof(dev->info.model_number));
513 os_memcpy(dev->info.model_number, msg->model_number,
514 msg->model_number_len);
517 if (msg->serial_number &&
518 msg->serial_number_len < sizeof(dev->info.serial_number)) {
519 os_memset(dev->info.serial_number, 0,
520 sizeof(dev->info.serial_number));
521 os_memcpy(dev->info.serial_number, msg->serial_number,
522 msg->serial_number_len);
525 if (msg->pri_dev_type)
526 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
527 sizeof(dev->info.pri_dev_type));
528 else if (msg->wps_pri_dev_type)
529 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
530 sizeof(dev->info.pri_dev_type));
532 if (msg->wps_sec_dev_type_list) {
533 os_memcpy(dev->info.wps_sec_dev_type_list,
534 msg->wps_sec_dev_type_list,
535 msg->wps_sec_dev_type_list_len);
536 dev->info.wps_sec_dev_type_list_len =
537 msg->wps_sec_dev_type_list_len;
540 if (msg->capability) {
542 * P2P Client Discoverability bit is reserved in all frames
543 * that use this function, so do not change its value here.
545 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
546 dev->info.dev_capab |= msg->capability[0] &
547 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
548 dev->info.group_capab = msg->capability[1];
551 if (msg->ext_listen_timing) {
552 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
553 dev->ext_listen_interval =
554 WPA_GET_LE16(msg->ext_listen_timing + 2);
558 u16 new_config_methods;
559 new_config_methods = msg->config_methods ?
560 msg->config_methods : msg->wps_config_methods;
561 if (new_config_methods &&
562 dev->info.config_methods != new_config_methods) {
563 p2p_dbg(p2p, "Update peer " MACSTR
564 " config_methods 0x%x -> 0x%x",
565 MAC2STR(dev->info.p2p_device_addr),
566 dev->info.config_methods,
568 dev->info.config_methods = new_config_methods;
575 * p2p_add_device - Add peer entries based on scan results or P2P frames
576 * @p2p: P2P module context from p2p_init()
577 * @addr: Source address of Beacon or Probe Response frame (may be either
578 * P2P Device Address or P2P Interface Address)
579 * @level: Signal level (signal strength of the received frame from the peer)
580 * @freq: Frequency on which the Beacon or Probe Response frame was received
581 * @rx_time: Time when the result was received
582 * @ies: IEs from the Beacon or Probe Response frame
583 * @ies_len: Length of ies buffer in octets
584 * @scan_res: Whether this was based on scan results
585 * Returns: 0 on success, -1 on failure
587 * If the scan result is for a GO, the clients in the group will also be added
588 * to the peer table. This function can also be used with some other frames
589 * like Provision Discovery Request that contains P2P Capability and P2P Device
592 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
593 struct os_time *rx_time, int level, const u8 *ies,
594 size_t ies_len, int scan_res)
596 struct p2p_device *dev;
597 struct p2p_message msg;
598 const u8 *p2p_dev_addr;
600 struct os_time time_now;
602 os_memset(&msg, 0, sizeof(msg));
603 if (p2p_parse_ies(ies, ies_len, &msg)) {
604 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
605 p2p_parse_free(&msg);
609 if (msg.p2p_device_addr)
610 p2p_dev_addr = msg.p2p_device_addr;
611 else if (msg.device_id)
612 p2p_dev_addr = msg.device_id;
614 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
615 p2p_parse_free(&msg);
619 if (!is_zero_ether_addr(p2p->peer_filter) &&
620 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
621 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
622 " due to peer filter", MAC2STR(p2p_dev_addr));
623 p2p_parse_free(&msg);
627 dev = p2p_create_device(p2p, p2p_dev_addr);
629 p2p_parse_free(&msg);
633 if (rx_time == NULL) {
634 os_get_time(&time_now);
639 * Update the device entry only if the new peer
640 * entry is newer than the one previously stored.
642 if (dev->last_seen.sec > 0 &&
643 os_time_before(rx_time, &dev->last_seen)) {
644 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
645 (unsigned int) rx_time->sec,
646 (unsigned int) rx_time->usec,
647 (unsigned int) dev->last_seen.sec,
648 (unsigned int) dev->last_seen.usec);
649 p2p_parse_free(&msg);
653 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_time));
655 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
657 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
658 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
660 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
661 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
663 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
664 dev->oper_ssid_len = msg.ssid[1];
667 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
668 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
670 if (*msg.ds_params == 14)
673 ds_freq = 2407 + *msg.ds_params * 5;
674 if (freq != ds_freq) {
675 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
681 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
682 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
683 MACSTR " %d -> %d MHz (DS param %d)",
684 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
685 freq, msg.ds_params ? *msg.ds_params : -1);
688 dev->listen_freq = freq;
690 dev->oper_freq = freq;
692 dev->info.level = level;
694 p2p_copy_wps_info(p2p, dev, 0, &msg);
696 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
697 wpabuf_free(dev->info.wps_vendor_ext[i]);
698 dev->info.wps_vendor_ext[i] = NULL;
701 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
702 if (msg.wps_vendor_ext[i] == NULL)
704 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
705 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
706 if (dev->info.wps_vendor_ext[i] == NULL)
710 if (msg.wfd_subelems) {
711 wpabuf_free(dev->info.wfd_subelems);
712 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
716 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
717 msg.group_info, msg.group_info_len);
720 p2p_parse_free(&msg);
722 if (p2p_pending_sd_req(p2p, dev))
723 dev->flags |= P2P_DEV_SD_SCHEDULE;
725 if (dev->flags & P2P_DEV_REPORTED)
728 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
729 freq, (unsigned int) rx_time->sec,
730 (unsigned int) rx_time->usec);
731 if (dev->flags & P2P_DEV_USER_REJECTED) {
732 p2p_dbg(p2p, "Do not report rejected device");
736 if (dev->info.config_methods == 0 &&
737 (freq == 2412 || freq == 2437 || freq == 2462)) {
739 * If we have only seen a Beacon frame from a GO, we do not yet
740 * know what WPS config methods it supports. Since some
741 * applications use config_methods value from P2P-DEVICE-FOUND
742 * events, postpone reporting this peer until we've fully
743 * discovered its capabilities.
745 * At least for now, do this only if the peer was detected on
746 * one of the social channels since that peer can be easily be
747 * found again and there are no limitations of having to use
748 * passive scan on this channels, so this can be done through
749 * Probe Response frame that includes the config_methods
752 p2p_dbg(p2p, "Do not report peer " MACSTR
753 " with unknown config methods", MAC2STR(addr));
757 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
758 !(dev->flags & P2P_DEV_REPORTED_ONCE));
759 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
765 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
769 if (p2p->go_neg_peer == dev) {
771 * If GO Negotiation is in progress, report that it has failed.
773 p2p_go_neg_failed(p2p, dev, -1);
774 p2p->go_neg_peer = NULL;
776 if (p2p->invite_peer == dev)
777 p2p->invite_peer = NULL;
778 if (p2p->sd_peer == dev)
780 if (p2p->pending_client_disc_go == dev)
781 p2p->pending_client_disc_go = NULL;
783 /* dev_lost() device, but only if it was previously dev_found() */
784 if (dev->flags & P2P_DEV_REPORTED_ONCE)
785 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
786 dev->info.p2p_device_addr);
788 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
789 wpabuf_free(dev->info.wps_vendor_ext[i]);
790 dev->info.wps_vendor_ext[i] = NULL;
793 wpabuf_free(dev->info.wfd_subelems);
799 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
801 struct p2p_channels *c;
802 struct p2p_reg_class *cla;
809 c = &p2p->cfg->channels;
810 for (cl = 0; cl < c->reg_classes; cl++) {
811 cla = &c->reg_class[cl];
812 if (cla->reg_class != p2p->last_prog_scan_class)
814 for (ch = 0; ch < cla->channels; ch++) {
815 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
825 /* Start from beginning */
826 reg_class = c->reg_class[0].reg_class;
827 channel = c->reg_class[0].channel[0];
829 /* Pick the next channel */
831 if (ch == cla->channels) {
833 if (cl == c->reg_classes)
837 reg_class = c->reg_class[cl].reg_class;
838 channel = c->reg_class[cl].channel[ch];
841 freq = p2p_channel_to_freq(reg_class, channel);
842 p2p_dbg(p2p, "Next progressive search 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 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
864 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
866 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
867 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
868 type = P2P_SCAN_SOCIAL_PLUS_ONE;
869 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
871 type = P2P_SCAN_SOCIAL;
872 p2p_dbg(p2p, "Starting search");
875 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
876 p2p->num_req_dev_types, p2p->req_dev_types,
877 p2p->find_dev_id, pw_id);
879 p2p_dbg(p2p, "Scan request failed");
880 p2p_continue_find(p2p);
881 } else if (res == 1) {
882 p2p_dbg(p2p, "Could not start p2p_scan at this point - will try again after previous scan completes");
883 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY);
885 p2p_dbg(p2p, "Running p2p_scan");
886 p2p->p2p_scan_running = 1;
887 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
888 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
894 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
896 struct p2p_data *p2p = eloop_ctx;
897 p2p_dbg(p2p, "Find timeout -> stop");
902 static int p2p_run_after_scan(struct p2p_data *p2p)
904 struct p2p_device *dev;
905 enum p2p_after_scan op;
907 if (p2p->after_scan_tx) {
908 p2p->after_scan_tx_in_progress = 1;
909 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
910 p2p->cfg->send_action(p2p->cfg->cb_ctx,
911 p2p->after_scan_tx->freq,
912 p2p->after_scan_tx->dst,
913 p2p->after_scan_tx->src,
914 p2p->after_scan_tx->bssid,
915 (u8 *) (p2p->after_scan_tx + 1),
916 p2p->after_scan_tx->len,
917 p2p->after_scan_tx->wait_time);
918 os_free(p2p->after_scan_tx);
919 p2p->after_scan_tx = NULL;
923 op = p2p->start_after_scan;
924 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
926 case P2P_AFTER_SCAN_NOTHING:
928 case P2P_AFTER_SCAN_LISTEN:
929 p2p_dbg(p2p, "Start previously requested Listen state");
930 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
931 p2p->pending_listen_usec / 1000);
933 case P2P_AFTER_SCAN_CONNECT:
934 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
935 MAC2STR(p2p->after_scan_peer));
936 dev = p2p_get_device(p2p, p2p->after_scan_peer);
938 p2p_dbg(p2p, "Peer not known anymore");
941 p2p_connect_send(p2p, dev);
949 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
951 struct p2p_data *p2p = eloop_ctx;
953 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
954 running = p2p->p2p_scan_running;
955 /* Make sure we recover from missed scan results callback */
956 p2p->p2p_scan_running = 0;
959 p2p_run_after_scan(p2p);
963 static void p2p_free_req_dev_types(struct p2p_data *p2p)
965 p2p->num_req_dev_types = 0;
966 os_free(p2p->req_dev_types);
967 p2p->req_dev_types = NULL;
971 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
972 enum p2p_discovery_type type,
973 unsigned int num_req_dev_types, const u8 *req_dev_types,
974 const u8 *dev_id, unsigned int search_delay)
978 p2p_dbg(p2p, "Starting find (type=%d)", type);
979 os_get_time(&p2p->find_start);
980 if (p2p->p2p_scan_running) {
981 p2p_dbg(p2p, "p2p_scan is already running");
984 p2p_free_req_dev_types(p2p);
985 if (req_dev_types && num_req_dev_types) {
986 p2p->req_dev_types = os_malloc(num_req_dev_types *
988 if (p2p->req_dev_types == NULL)
990 os_memcpy(p2p->req_dev_types, req_dev_types,
991 num_req_dev_types * WPS_DEV_TYPE_LEN);
992 p2p->num_req_dev_types = num_req_dev_types;
996 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
997 p2p->find_dev_id = p2p->find_dev_id_buf;
999 p2p->find_dev_id = NULL;
1001 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1002 p2p_clear_timeout(p2p);
1003 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1004 p2p->find_type = type;
1005 p2p_device_clear_reported(p2p);
1006 p2p_set_state(p2p, P2P_SEARCH);
1007 p2p->search_delay = search_delay;
1008 p2p->in_search_delay = 0;
1009 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1010 p2p->last_p2p_find_timeout = timeout;
1012 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1015 case P2P_FIND_START_WITH_FULL:
1016 case P2P_FIND_PROGRESSIVE:
1017 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1018 p2p->num_req_dev_types,
1019 p2p->req_dev_types, dev_id,
1022 case P2P_FIND_ONLY_SOCIAL:
1023 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1024 p2p->num_req_dev_types,
1025 p2p->req_dev_types, dev_id,
1033 p2p_dbg(p2p, "Running p2p_scan");
1034 p2p->p2p_scan_running = 1;
1035 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1036 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1038 } else if (res == 1) {
1039 p2p_dbg(p2p, "Could not start p2p_scan at this point - will try again after previous scan completes");
1041 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY);
1042 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1044 p2p_dbg(p2p, "Failed to start p2p_scan");
1045 p2p_set_state(p2p, P2P_IDLE);
1046 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1053 int p2p_other_scan_completed(struct p2p_data *p2p)
1055 if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) {
1056 p2p_set_state(p2p, P2P_SEARCH);
1060 if (p2p->state != P2P_SEARCH_WHEN_READY)
1062 p2p_dbg(p2p, "Starting pending P2P find now that previous scan was completed");
1063 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type,
1064 p2p->num_req_dev_types, p2p->req_dev_types,
1065 p2p->find_dev_id, p2p->search_delay) < 0) {
1066 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1073 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1075 p2p_dbg(p2p, "Stopping find");
1076 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1077 p2p_clear_timeout(p2p);
1078 if (p2p->state == P2P_SEARCH ||
1079 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY ||
1080 p2p->state == P2P_SEARCH_WHEN_READY)
1081 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1082 p2p_set_state(p2p, P2P_IDLE);
1083 p2p_free_req_dev_types(p2p);
1084 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1085 if (p2p->go_neg_peer)
1086 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1087 p2p->go_neg_peer = NULL;
1088 p2p->sd_peer = NULL;
1089 p2p->invite_peer = NULL;
1090 p2p_stop_listen_for_freq(p2p, freq);
1094 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1096 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1097 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1100 if (p2p->in_listen) {
1102 p2p_clear_timeout(p2p);
1104 if (p2p->drv_in_listen) {
1106 * The driver may not deliver callback to p2p_listen_end()
1107 * when the operation gets canceled, so clear the internal
1108 * variable that is tracking driver state.
1110 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1111 p2p->drv_in_listen = 0;
1113 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1117 void p2p_stop_find(struct p2p_data *p2p)
1119 p2p_stop_find_for_freq(p2p, 0);
1123 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1124 unsigned int force_freq,
1125 unsigned int pref_freq)
1127 u8 op_class, op_channel;
1128 unsigned int freq = force_freq ? force_freq : pref_freq;
1130 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1131 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1135 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel)) {
1136 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1137 freq, op_class, op_channel);
1141 p2p->op_reg_class = op_class;
1142 p2p->op_channel = op_channel;
1145 p2p->channels.reg_classes = 1;
1146 p2p->channels.reg_class[0].channels = 1;
1147 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1148 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1150 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1151 sizeof(struct p2p_channels));
1158 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1160 u8 op_class, op_channel;
1162 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1163 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1164 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1166 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1167 p2p->op_reg_class = op_class;
1168 p2p->op_channel = op_channel;
1169 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1170 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1171 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1173 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1174 p2p->op_reg_class = op_class;
1175 p2p->op_channel = op_channel;
1176 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1177 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1178 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1179 &op_channel) == 0) {
1180 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1181 p2p->op_reg_class = op_class;
1182 p2p->op_channel = op_channel;
1184 p2p->op_reg_class = p2p->cfg->op_reg_class;
1185 p2p->op_channel = p2p->cfg->op_channel;
1188 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1189 sizeof(struct p2p_channels));
1194 * p2p_prepare_channel - Select operating channel for GO Negotiation
1195 * @p2p: P2P module context from p2p_init()
1196 * @dev: Selected peer device
1197 * @force_freq: Forced frequency in MHz or 0 if not forced
1198 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1199 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1201 * This function is used to do initial operating channel selection for GO
1202 * Negotiation prior to having received peer information. The selected channel
1203 * may be further optimized in p2p_reselect_channel() once the peer information
1206 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1207 unsigned int force_freq, unsigned int pref_freq)
1209 if (force_freq || pref_freq) {
1210 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq) < 0)
1213 p2p_prepare_channel_best(p2p);
1215 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1216 p2p->op_reg_class, p2p->op_channel,
1217 force_freq ? " (forced)" : "");
1220 dev->flags |= P2P_DEV_FORCE_FREQ;
1222 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1228 static void p2p_set_dev_persistent(struct p2p_device *dev,
1229 int persistent_group)
1231 switch (persistent_group) {
1233 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1234 P2P_DEV_PREFER_PERSISTENT_RECONN);
1237 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1238 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1241 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1242 P2P_DEV_PREFER_PERSISTENT_RECONN;
1248 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1249 enum p2p_wps_method wps_method,
1250 int go_intent, const u8 *own_interface_addr,
1251 unsigned int force_freq, int persistent_group,
1252 const u8 *force_ssid, size_t force_ssid_len,
1253 int pd_before_go_neg, unsigned int pref_freq)
1255 struct p2p_device *dev;
1257 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1258 " GO Intent=%d Intended Interface Address=" MACSTR
1259 " wps_method=%d persistent_group=%d pd_before_go_neg=%d",
1260 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1261 wps_method, persistent_group, pd_before_go_neg);
1263 dev = p2p_get_device(p2p, peer_addr);
1264 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1265 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1266 MAC2STR(peer_addr));
1270 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0)
1273 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1274 if (!(dev->info.dev_capab &
1275 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1276 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1277 " that is in a group and is not discoverable",
1278 MAC2STR(peer_addr));
1281 if (dev->oper_freq <= 0) {
1282 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1283 " with incomplete information",
1284 MAC2STR(peer_addr));
1289 * First, try to connect directly. If the peer does not
1290 * acknowledge frames, assume it is sleeping and use device
1291 * discoverability via the GO at that point.
1297 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1298 force_ssid, force_ssid_len);
1299 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1300 p2p->ssid_len = force_ssid_len;
1304 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1305 dev->flags &= ~P2P_DEV_USER_REJECTED;
1306 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1307 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1308 if (pd_before_go_neg)
1309 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1311 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1313 * Assign dialog token and tie breaker here to use the same
1314 * values in each retry within the same GO Negotiation exchange.
1316 dev->dialog_token++;
1317 if (dev->dialog_token == 0)
1318 dev->dialog_token = 1;
1319 dev->tie_breaker = p2p->next_tie_breaker;
1320 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1322 dev->connect_reqs = 0;
1323 dev->go_neg_req_sent = 0;
1324 dev->go_state = UNKNOWN_GO;
1325 p2p_set_dev_persistent(dev, persistent_group);
1326 p2p->go_intent = go_intent;
1327 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1329 if (p2p->state != P2P_IDLE)
1332 if (p2p->after_scan_tx) {
1334 * We need to drop the pending frame to avoid issues with the
1335 * new GO Negotiation, e.g., when the pending frame was from a
1336 * previous attempt at starting a GO Negotiation.
1338 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1339 os_free(p2p->after_scan_tx);
1340 p2p->after_scan_tx = NULL;
1343 dev->wps_method = wps_method;
1344 dev->status = P2P_SC_SUCCESS;
1346 if (p2p->p2p_scan_running) {
1347 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1348 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1349 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1352 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1354 return p2p_connect_send(p2p, dev);
1358 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1359 enum p2p_wps_method wps_method,
1360 int go_intent, const u8 *own_interface_addr,
1361 unsigned int force_freq, int persistent_group,
1362 const u8 *force_ssid, size_t force_ssid_len,
1363 unsigned int pref_freq)
1365 struct p2p_device *dev;
1367 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1368 " GO Intent=%d Intended Interface Address=" MACSTR
1369 " wps_method=%d persistent_group=%d",
1370 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1371 wps_method, persistent_group);
1373 dev = p2p_get_device(p2p, peer_addr);
1375 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1376 MAC2STR(peer_addr));
1380 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0)
1385 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1386 force_ssid, force_ssid_len);
1387 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1388 p2p->ssid_len = force_ssid_len;
1392 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1393 dev->flags &= ~P2P_DEV_USER_REJECTED;
1394 dev->go_neg_req_sent = 0;
1395 dev->go_state = UNKNOWN_GO;
1396 p2p_set_dev_persistent(dev, persistent_group);
1397 p2p->go_intent = go_intent;
1398 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1400 dev->wps_method = wps_method;
1401 dev->status = P2P_SC_SUCCESS;
1407 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1408 struct p2p_device *dev, struct p2p_message *msg)
1410 os_get_time(&dev->last_seen);
1412 p2p_copy_wps_info(p2p, dev, 0, msg);
1414 if (msg->listen_channel) {
1416 freq = p2p_channel_to_freq(msg->listen_channel[3],
1417 msg->listen_channel[4]);
1419 p2p_dbg(p2p, "Unknown peer Listen channel: "
1420 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1421 msg->listen_channel[0],
1422 msg->listen_channel[1],
1423 msg->listen_channel[2],
1424 msg->listen_channel[3],
1425 msg->listen_channel[4]);
1427 p2p_dbg(p2p, "Update peer " MACSTR
1428 " Listen channel: %u -> %u MHz",
1429 MAC2STR(dev->info.p2p_device_addr),
1430 dev->listen_freq, freq);
1431 dev->listen_freq = freq;
1435 if (msg->wfd_subelems) {
1436 wpabuf_free(dev->info.wfd_subelems);
1437 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1440 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1441 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1442 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1444 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1445 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1447 MAC2STR(dev->info.p2p_device_addr),
1448 dev->info.dev_capab, dev->info.group_capab,
1449 dev->info.device_name, dev->listen_freq);
1452 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1454 if (dev->flags & P2P_DEV_USER_REJECTED) {
1455 p2p_dbg(p2p, "Do not report rejected device");
1459 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1460 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1461 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1465 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1467 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1468 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1469 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1470 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1471 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1475 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1477 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1478 p2p_random(params->passphrase, 8);
1483 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1485 struct p2p_go_neg_results res;
1486 int go = peer->go_state == LOCAL_GO;
1487 struct p2p_channels intersection;
1491 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1492 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1494 os_memset(&res, 0, sizeof(res));
1496 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1497 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1498 res.wps_method = peer->wps_method;
1499 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1500 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1501 res.persistent_group = 2;
1503 res.persistent_group = 1;
1507 /* Setup AP mode for WPS provisioning */
1508 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1510 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1511 res.ssid_len = p2p->ssid_len;
1512 p2p_random(res.passphrase, 8);
1514 res.freq = peer->oper_freq;
1515 if (p2p->ssid_len) {
1516 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1517 res.ssid_len = p2p->ssid_len;
1521 p2p_channels_intersect(&p2p->channels, &peer->channels,
1524 for (i = 0; i < intersection.reg_classes; i++) {
1525 struct p2p_reg_class *c = &intersection.reg_class[i];
1526 if (freqs + 1 == P2P_MAX_CHANNELS)
1528 for (j = 0; j < c->channels; j++) {
1530 if (freqs + 1 == P2P_MAX_CHANNELS)
1532 freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1535 res.freq_list[freqs++] = freq;
1539 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1541 p2p_clear_timeout(p2p);
1543 peer->go_neg_req_sent = 0;
1544 peer->wps_method = WPS_NOT_READY;
1546 p2p_set_state(p2p, P2P_PROVISIONING);
1547 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1551 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1552 const u8 *data, size_t len, int rx_freq)
1554 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1555 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1561 case P2P_GO_NEG_REQ:
1562 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1564 case P2P_GO_NEG_RESP:
1565 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1567 case P2P_GO_NEG_CONF:
1568 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1570 case P2P_INVITATION_REQ:
1571 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1574 case P2P_INVITATION_RESP:
1575 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1577 case P2P_PROV_DISC_REQ:
1578 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1580 case P2P_PROV_DISC_RESP:
1581 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1583 case P2P_DEV_DISC_REQ:
1584 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1586 case P2P_DEV_DISC_RESP:
1587 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1590 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1597 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1598 const u8 *sa, const u8 *bssid, const u8 *data,
1599 size_t len, int freq)
1605 case WLAN_PA_VENDOR_SPECIFIC:
1610 if (WPA_GET_BE24(data) != OUI_WFA)
1618 if (*data != P2P_OUI_TYPE)
1621 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1623 case WLAN_PA_GAS_INITIAL_REQ:
1624 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1626 case WLAN_PA_GAS_INITIAL_RESP:
1627 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1629 case WLAN_PA_GAS_COMEBACK_REQ:
1630 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1632 case WLAN_PA_GAS_COMEBACK_RESP:
1633 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1639 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1640 const u8 *bssid, u8 category,
1641 const u8 *data, size_t len, int freq)
1643 if (category == WLAN_ACTION_PUBLIC) {
1644 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1648 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1654 if (WPA_GET_BE24(data) != OUI_WFA)
1659 if (*data != P2P_OUI_TYPE)
1664 /* P2P action frame */
1665 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1666 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1672 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1675 case P2P_PRESENCE_REQ:
1676 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1678 case P2P_PRESENCE_RESP:
1679 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1681 case P2P_GO_DISC_REQ:
1682 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1685 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1691 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1693 struct p2p_data *p2p = eloop_ctx;
1694 if (p2p->go_neg_peer == NULL)
1696 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1697 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1698 p2p_connect_send(p2p, p2p->go_neg_peer);
1702 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1704 struct p2p_data *p2p = eloop_ctx;
1705 if (p2p->invite_peer == NULL)
1707 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1708 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1712 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1713 const u8 *ie, size_t ie_len)
1715 struct p2p_message msg;
1716 struct p2p_device *dev;
1718 os_memset(&msg, 0, sizeof(msg));
1719 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1721 p2p_parse_free(&msg);
1722 return; /* not a P2P probe */
1725 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1726 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1728 /* The Probe Request is not part of P2P Device Discovery. It is
1729 * not known whether the source address of the frame is the P2P
1730 * Device Address or P2P Interface Address. Do not add a new
1731 * peer entry based on this frames.
1733 p2p_parse_free(&msg);
1737 dev = p2p_get_device(p2p, addr);
1739 if (dev->country[0] == 0 && msg.listen_channel)
1740 os_memcpy(dev->country, msg.listen_channel, 3);
1741 os_get_time(&dev->last_seen);
1742 p2p_parse_free(&msg);
1743 return; /* already known */
1746 dev = p2p_create_device(p2p, addr);
1748 p2p_parse_free(&msg);
1752 os_get_time(&dev->last_seen);
1753 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1755 if (msg.listen_channel) {
1756 os_memcpy(dev->country, msg.listen_channel, 3);
1757 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1758 msg.listen_channel[4]);
1761 p2p_copy_wps_info(p2p, dev, 1, &msg);
1763 if (msg.wfd_subelems) {
1764 wpabuf_free(dev->info.wfd_subelems);
1765 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1768 p2p_parse_free(&msg);
1770 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1771 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1772 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1773 dev->info.group_capab, dev->info.device_name,
1778 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1780 struct p2p_message *msg)
1782 struct p2p_device *dev;
1784 dev = p2p_get_device(p2p, addr);
1786 os_get_time(&dev->last_seen);
1787 return dev; /* already known */
1790 dev = p2p_create_device(p2p, addr);
1794 p2p_add_dev_info(p2p, addr, dev, msg);
1800 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1802 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1804 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1805 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1806 WPA_GET_BE16(&req_dev_type[6]) == 0)
1807 return 1; /* Category match with wildcard OUI/sub-category */
1812 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1813 size_t num_req_dev_type)
1816 for (i = 0; i < num_req_dev_type; i++) {
1817 if (dev_type_match(dev_type, req_dev_type[i]))
1825 * p2p_match_dev_type - Match local device type with requested type
1826 * @p2p: P2P module context from p2p_init()
1827 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1828 * Returns: 1 on match, 0 on mismatch
1830 * This function can be used to match the Requested Device Type attribute in
1831 * WPS IE with the local device types for deciding whether to reply to a Probe
1834 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1836 struct wps_parse_attr attr;
1839 if (wps_parse_msg(wps, &attr))
1840 return 1; /* assume no Requested Device Type attributes */
1842 if (attr.num_req_dev_type == 0)
1843 return 1; /* no Requested Device Type attributes -> match */
1845 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1846 attr.num_req_dev_type))
1847 return 1; /* Own Primary Device Type matches */
1849 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1850 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1852 attr.num_req_dev_type))
1853 return 1; /* Own Secondary Device Type matches */
1855 /* No matching device type found */
1860 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1867 #ifdef CONFIG_WIFI_DISPLAY
1868 if (p2p->wfd_ie_probe_resp)
1869 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1870 #endif /* CONFIG_WIFI_DISPLAY */
1872 buf = wpabuf_alloc(1000 + extra);
1876 if (p2p->go_neg_peer) {
1877 /* Advertise immediate availability of WPS credential */
1878 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1881 p2p_build_wps_ie(p2p, buf, pw_id, 1);
1883 #ifdef CONFIG_WIFI_DISPLAY
1884 if (p2p->wfd_ie_probe_resp)
1885 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1886 #endif /* CONFIG_WIFI_DISPLAY */
1889 len = p2p_buf_add_ie_hdr(buf);
1890 p2p_buf_add_capability(buf, p2p->dev_capab &
1891 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
1892 if (p2p->ext_listen_interval)
1893 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1894 p2p->ext_listen_interval);
1895 p2p_buf_add_device_info(buf, p2p, NULL);
1896 p2p_buf_update_ie_hdr(buf, len);
1902 static enum p2p_probe_req_status
1903 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1904 const u8 *bssid, const u8 *ie, size_t ie_len)
1906 struct ieee802_11_elems elems;
1908 struct ieee80211_mgmt *resp;
1909 struct p2p_message msg;
1912 if (!p2p->in_listen || !p2p->drv_in_listen) {
1913 /* not in Listen state - ignore Probe Request */
1914 return P2P_PREQ_NOT_LISTEN;
1917 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1919 /* Ignore invalid Probe Request frames */
1920 return P2P_PREQ_MALFORMED;
1923 if (elems.p2p == NULL) {
1924 /* not a P2P probe - ignore it */
1925 return P2P_PREQ_NOT_P2P;
1928 if (dst && !is_broadcast_ether_addr(dst) &&
1929 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1930 /* Not sent to the broadcast address or our P2P Device Address
1932 return P2P_PREQ_NOT_PROCESSED;
1935 if (bssid && !is_broadcast_ether_addr(bssid)) {
1936 /* Not sent to the Wildcard BSSID */
1937 return P2P_PREQ_NOT_PROCESSED;
1940 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1941 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1943 /* not using P2P Wildcard SSID - ignore */
1944 return P2P_PREQ_NOT_PROCESSED;
1947 if (supp_rates_11b_only(&elems)) {
1948 /* Indicates support for 11b rates only */
1949 return P2P_PREQ_NOT_P2P;
1952 os_memset(&msg, 0, sizeof(msg));
1953 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
1954 /* Could not parse P2P attributes */
1955 return P2P_PREQ_NOT_P2P;
1958 if (msg.device_id &&
1959 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1960 /* Device ID did not match */
1961 p2p_parse_free(&msg);
1962 return P2P_PREQ_NOT_PROCESSED;
1965 /* Check Requested Device Type match */
1966 if (msg.wps_attributes &&
1967 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
1968 /* No match with Requested Device Type */
1969 p2p_parse_free(&msg);
1970 return P2P_PREQ_NOT_PROCESSED;
1972 p2p_parse_free(&msg);
1974 if (!p2p->cfg->send_probe_resp) {
1975 /* Response generated elsewhere */
1976 return P2P_PREQ_NOT_PROCESSED;
1979 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
1982 * We do not really have a specific BSS that this frame is advertising,
1983 * so build a frame that has some information in valid format. This is
1984 * really only used for discovery purposes, not to learn exact BSS
1987 ies = p2p_build_probe_resp_ies(p2p);
1989 return P2P_PREQ_NOT_PROCESSED;
1991 buf = wpabuf_alloc(200 + wpabuf_len(ies));
1994 return P2P_PREQ_NOT_PROCESSED;
1998 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2000 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2001 (WLAN_FC_STYPE_PROBE_RESP << 4));
2002 os_memcpy(resp->da, addr, ETH_ALEN);
2003 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2004 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2005 resp->u.probe_resp.beacon_int = host_to_le16(100);
2006 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2007 resp->u.probe_resp.capab_info =
2008 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2009 WLAN_CAPABILITY_PRIVACY |
2010 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2012 wpabuf_put_u8(buf, WLAN_EID_SSID);
2013 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2014 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2016 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2017 wpabuf_put_u8(buf, 8);
2018 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2019 wpabuf_put_u8(buf, 90 / 5);
2020 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2021 wpabuf_put_u8(buf, 180 / 5);
2022 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2023 wpabuf_put_u8(buf, 360 / 5);
2024 wpabuf_put_u8(buf, 480 / 5);
2025 wpabuf_put_u8(buf, 540 / 5);
2027 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2028 wpabuf_put_u8(buf, 1);
2029 wpabuf_put_u8(buf, p2p->cfg->channel);
2031 wpabuf_put_buf(buf, ies);
2034 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2038 return P2P_PREQ_NOT_PROCESSED;
2042 enum p2p_probe_req_status
2043 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2044 const u8 *bssid, const u8 *ie, size_t ie_len)
2046 enum p2p_probe_req_status res;
2048 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2050 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2052 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2054 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2056 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2057 /* Received a Probe Request from GO Negotiation peer */
2058 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2059 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2060 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2061 return P2P_PREQ_PROCESSED;
2064 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2066 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2068 /* Received a Probe Request from Invite peer */
2069 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2070 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2071 return P2P_PREQ_PROCESSED;
2078 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2079 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2088 return 0; /* WLAN AP is not a P2P manager */
2091 * (Re)Association Request - P2P IE
2092 * P2P Capability attribute (shall be present)
2093 * P2P Interface attribute (present if concurrent device and
2094 * P2P Management is enabled)
2096 tmp = wpabuf_alloc(200);
2100 lpos = p2p_buf_add_ie_hdr(tmp);
2102 if (p2p->num_groups > 0) {
2103 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2104 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2105 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2107 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2109 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2110 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2111 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2112 p2p_buf_add_p2p_interface(tmp, p2p);
2113 p2p_buf_update_ie_hdr(tmp, lpos);
2115 tmplen = wpabuf_len(tmp);
2119 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2128 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2129 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2133 struct p2p_device *peer;
2139 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2141 #ifdef CONFIG_WIFI_DISPLAY
2142 if (p2p->wfd_ie_assoc_req)
2143 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2144 #endif /* CONFIG_WIFI_DISPLAY */
2147 * (Re)Association Request - P2P IE
2148 * P2P Capability attribute (shall be present)
2149 * Extended Listen Timing (may be present)
2150 * P2P Device Info attribute (shall be present)
2152 tmp = wpabuf_alloc(200 + extra);
2156 #ifdef CONFIG_WIFI_DISPLAY
2157 if (p2p->wfd_ie_assoc_req)
2158 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2159 #endif /* CONFIG_WIFI_DISPLAY */
2161 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2163 lpos = p2p_buf_add_ie_hdr(tmp);
2164 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2165 if (p2p->ext_listen_interval)
2166 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2167 p2p->ext_listen_interval);
2168 p2p_buf_add_device_info(tmp, p2p, peer);
2169 p2p_buf_update_ie_hdr(tmp, lpos);
2171 tmplen = wpabuf_len(tmp);
2175 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2184 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2186 struct wpabuf *p2p_ie;
2189 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2193 ret = p2p_attr_text(p2p_ie, buf, end);
2194 wpabuf_free(p2p_ie);
2199 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2201 struct p2p_message msg;
2203 os_memset(&msg, 0, sizeof(msg));
2204 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2207 if (msg.p2p_device_addr) {
2208 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2210 } else if (msg.device_id) {
2211 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2218 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2220 struct wpabuf *p2p_ie;
2223 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2224 P2P_IE_VENDOR_TYPE);
2227 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2228 wpabuf_free(p2p_ie);
2233 static void p2p_clear_go_neg(struct p2p_data *p2p)
2235 p2p->go_neg_peer = NULL;
2236 p2p_clear_timeout(p2p);
2237 p2p_set_state(p2p, P2P_IDLE);
2241 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2243 if (p2p->go_neg_peer == NULL) {
2244 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2245 return; /* No pending Group Formation */
2248 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2250 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2251 MACSTR " (GO Negotiation peer " MACSTR ")",
2253 MAC2STR(p2p->go_neg_peer->intended_addr));
2254 return; /* Ignore unexpected peer address */
2257 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2260 p2p_clear_go_neg(p2p);
2264 void p2p_group_formation_failed(struct p2p_data *p2p)
2266 if (p2p->go_neg_peer == NULL) {
2267 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2268 return; /* No pending Group Formation */
2271 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2272 MAC2STR(p2p->go_neg_peer->intended_addr));
2274 p2p_clear_go_neg(p2p);
2278 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2280 struct p2p_data *p2p;
2282 if (cfg->max_peers < 1)
2285 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2288 p2p->cfg = (struct p2p_config *) (p2p + 1);
2289 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2291 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2292 if (cfg->manufacturer)
2293 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2294 if (cfg->model_name)
2295 p2p->cfg->model_name = os_strdup(cfg->model_name);
2296 if (cfg->model_number)
2297 p2p->cfg->model_number = os_strdup(cfg->model_number);
2298 if (cfg->serial_number)
2299 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2300 if (cfg->pref_chan) {
2301 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2302 sizeof(struct p2p_channel));
2303 if (p2p->cfg->pref_chan) {
2304 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2305 cfg->num_pref_chan *
2306 sizeof(struct p2p_channel));
2308 p2p->cfg->num_pref_chan = 0;
2311 p2p->min_disc_int = 1;
2312 p2p->max_disc_int = 3;
2313 p2p->max_disc_tu = -1;
2315 os_get_random(&p2p->next_tie_breaker, 1);
2316 p2p->next_tie_breaker &= 0x01;
2317 if (cfg->sd_request)
2318 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2319 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2320 if (cfg->concurrent_operations)
2321 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2322 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2324 dl_list_init(&p2p->devices);
2326 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2327 p2p_expiration_timeout, p2p, NULL);
2329 p2p->go_timeout = 100;
2330 p2p->client_timeout = 20;
2336 void p2p_deinit(struct p2p_data *p2p)
2338 #ifdef CONFIG_WIFI_DISPLAY
2339 wpabuf_free(p2p->wfd_ie_beacon);
2340 wpabuf_free(p2p->wfd_ie_probe_req);
2341 wpabuf_free(p2p->wfd_ie_probe_resp);
2342 wpabuf_free(p2p->wfd_ie_assoc_req);
2343 wpabuf_free(p2p->wfd_ie_invitation);
2344 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2345 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2346 wpabuf_free(p2p->wfd_ie_go_neg);
2347 wpabuf_free(p2p->wfd_dev_info);
2348 wpabuf_free(p2p->wfd_assoc_bssid);
2349 wpabuf_free(p2p->wfd_coupled_sink_info);
2350 #endif /* CONFIG_WIFI_DISPLAY */
2352 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2353 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2354 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2355 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2357 p2p_free_req_dev_types(p2p);
2358 os_free(p2p->cfg->dev_name);
2359 os_free(p2p->cfg->manufacturer);
2360 os_free(p2p->cfg->model_name);
2361 os_free(p2p->cfg->model_number);
2362 os_free(p2p->cfg->serial_number);
2363 os_free(p2p->cfg->pref_chan);
2364 os_free(p2p->groups);
2365 wpabuf_free(p2p->sd_resp);
2366 os_free(p2p->after_scan_tx);
2367 p2p_remove_wps_vendor_extensions(p2p);
2372 void p2p_flush(struct p2p_data *p2p)
2374 struct p2p_device *dev, *prev;
2376 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2378 dl_list_del(&dev->list);
2379 p2p_device_free(p2p, dev);
2381 p2p_free_sd_queries(p2p);
2382 os_free(p2p->after_scan_tx);
2383 p2p->after_scan_tx = NULL;
2387 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2389 struct p2p_device *dev;
2391 dev = p2p_get_device(p2p, addr);
2395 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2397 if (p2p->go_neg_peer == dev)
2398 p2p->go_neg_peer = NULL;
2400 dev->wps_method = WPS_NOT_READY;
2401 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2402 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2404 /* Check if after_scan_tx is for this peer. If so free it */
2405 if (p2p->after_scan_tx &&
2406 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2407 os_free(p2p->after_scan_tx);
2408 p2p->after_scan_tx = NULL;
2415 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2417 os_free(p2p->cfg->dev_name);
2419 p2p->cfg->dev_name = os_strdup(dev_name);
2420 if (p2p->cfg->dev_name == NULL)
2423 p2p->cfg->dev_name = NULL;
2428 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2430 os_free(p2p->cfg->manufacturer);
2431 p2p->cfg->manufacturer = NULL;
2433 p2p->cfg->manufacturer = os_strdup(manufacturer);
2434 if (p2p->cfg->manufacturer == NULL)
2442 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2444 os_free(p2p->cfg->model_name);
2445 p2p->cfg->model_name = NULL;
2447 p2p->cfg->model_name = os_strdup(model_name);
2448 if (p2p->cfg->model_name == NULL)
2456 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2458 os_free(p2p->cfg->model_number);
2459 p2p->cfg->model_number = NULL;
2461 p2p->cfg->model_number = os_strdup(model_number);
2462 if (p2p->cfg->model_number == NULL)
2470 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2472 os_free(p2p->cfg->serial_number);
2473 p2p->cfg->serial_number = NULL;
2474 if (serial_number) {
2475 p2p->cfg->serial_number = os_strdup(serial_number);
2476 if (p2p->cfg->serial_number == NULL)
2484 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2486 p2p->cfg->config_methods = config_methods;
2490 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2492 os_memcpy(p2p->cfg->uuid, uuid, 16);
2496 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2498 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2503 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2504 size_t num_dev_types)
2506 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2507 num_dev_types = P2P_SEC_DEVICE_TYPES;
2508 p2p->cfg->num_sec_dev_types = num_dev_types;
2509 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2514 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2518 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2519 wpabuf_free(p2p->wps_vendor_ext[i]);
2520 p2p->wps_vendor_ext[i] = NULL;
2525 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2526 const struct wpabuf *vendor_ext)
2530 if (vendor_ext == NULL)
2533 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2534 if (p2p->wps_vendor_ext[i] == NULL)
2537 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2540 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2541 if (p2p->wps_vendor_ext[i] == NULL)
2548 int p2p_set_country(struct p2p_data *p2p, const char *country)
2550 os_memcpy(p2p->cfg->country, country, 3);
2555 void p2p_continue_find(struct p2p_data *p2p)
2557 struct p2p_device *dev;
2558 p2p_set_state(p2p, P2P_SEARCH);
2559 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2560 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2561 if (p2p_start_sd(p2p, dev) == 0)
2565 } else if (dev->req_config_methods &&
2566 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2567 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2568 MACSTR " (config methods 0x%x)",
2569 MAC2STR(dev->info.p2p_device_addr),
2570 dev->req_config_methods);
2571 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2576 p2p_listen_in_find(p2p, 1);
2580 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2582 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2584 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2588 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2589 p2p->sd_peer = NULL;
2591 p2p_continue_find(p2p);
2595 if (p2p->sd_peer == NULL) {
2596 p2p_dbg(p2p, "No SD peer entry known");
2597 p2p_continue_find(p2p);
2601 /* Wait for response from the peer */
2602 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2603 p2p_set_timeout(p2p, 0, 200000);
2608 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2609 * @p2p: P2P module context from p2p_init()
2611 static void p2p_retry_pd(struct p2p_data *p2p)
2613 struct p2p_device *dev;
2615 if (p2p->state != P2P_IDLE)
2619 * Retry the prov disc req attempt only for the peer that the user had
2623 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2624 if (os_memcmp(p2p->pending_pd_devaddr,
2625 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2627 if (!dev->req_config_methods)
2630 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2631 MACSTR " (config methods 0x%x)",
2632 MAC2STR(dev->info.p2p_device_addr),
2633 dev->req_config_methods);
2634 p2p_send_prov_disc_req(p2p, dev,
2635 dev->flags & P2P_DEV_PD_FOR_JOIN, 0);
2641 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2643 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2647 * Postpone resetting the pending action state till after we actually
2648 * time out. This allows us to take some action like notifying any
2649 * interested parties about no response to the request.
2651 * When the timer (below) goes off we check in IDLE, SEARCH, or
2652 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2653 * requests in, if this was still pending and then raise notification.
2657 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2659 if (p2p->user_initiated_pd &&
2660 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2662 /* Retry request from timeout to avoid busy loops */
2663 p2p->pending_action_state = P2P_PENDING_PD;
2664 p2p_set_timeout(p2p, 0, 50000);
2665 } else if (p2p->state != P2P_IDLE)
2666 p2p_continue_find(p2p);
2667 else if (p2p->user_initiated_pd) {
2668 p2p->pending_action_state = P2P_PENDING_PD;
2669 p2p_set_timeout(p2p, 0, 300000);
2675 * This postponing, of resetting pending_action_state, needs to be
2676 * done only for user initiated PD requests and not internal ones.
2678 if (p2p->user_initiated_pd)
2679 p2p->pending_action_state = P2P_PENDING_PD;
2681 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2683 /* Wait for response from the peer */
2684 if (p2p->state == P2P_SEARCH)
2685 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2686 p2p_set_timeout(p2p, 0, 200000);
2690 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2691 struct os_time *rx_time, int level, const u8 *ies,
2694 if (os_time_before(rx_time, &p2p->find_start)) {
2696 * The driver may have cached (e.g., in cfg80211 BSS table) the
2697 * scan results for relatively long time. To avoid reporting
2698 * stale information, update P2P peers only based on results
2699 * that have based on frames received after the last p2p_find
2700 * operation was started.
2702 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2703 " (rx_time=%u.%06u)",
2704 MAC2STR(bssid), (unsigned int) rx_time->sec,
2705 (unsigned int) rx_time->usec);
2709 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2715 void p2p_scan_res_handled(struct p2p_data *p2p)
2717 if (!p2p->p2p_scan_running) {
2718 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2720 p2p->p2p_scan_running = 0;
2721 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2723 if (p2p_run_after_scan(p2p))
2725 if (p2p->state == P2P_SEARCH)
2726 p2p_continue_find(p2p);
2730 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2734 #ifdef CONFIG_WIFI_DISPLAY
2735 if (p2p->wfd_ie_probe_req)
2736 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2737 #endif /* CONFIG_WIFI_DISPLAY */
2739 len = p2p_buf_add_ie_hdr(ies);
2740 p2p_buf_add_capability(ies, p2p->dev_capab &
2741 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2743 p2p_buf_add_device_id(ies, dev_id);
2744 if (p2p->cfg->reg_class && p2p->cfg->channel)
2745 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2746 p2p->cfg->reg_class,
2748 if (p2p->ext_listen_interval)
2749 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2750 p2p->ext_listen_interval);
2751 /* TODO: p2p_buf_add_operating_channel() if GO */
2752 p2p_buf_update_ie_hdr(ies, len);
2756 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2760 #ifdef CONFIG_WIFI_DISPLAY
2761 if (p2p && p2p->wfd_ie_probe_req)
2762 len += wpabuf_len(p2p->wfd_ie_probe_req);
2763 #endif /* CONFIG_WIFI_DISPLAY */
2769 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2771 return p2p_attr_text(p2p_ie, buf, end);
2775 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2777 struct p2p_device *dev = p2p->go_neg_peer;
2780 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2783 p2p_dbg(p2p, "No pending GO Negotiation");
2788 if (dev->flags & P2P_DEV_USER_REJECTED) {
2789 p2p_set_state(p2p, P2P_IDLE);
2792 } else if (dev->go_neg_req_sent) {
2793 /* Cancel the increment from p2p_connect_send() on failure */
2794 dev->go_neg_req_sent--;
2798 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2799 !is_zero_ether_addr(dev->member_in_go_dev)) {
2800 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
2801 MAC2STR(dev->info.p2p_device_addr));
2802 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2803 p2p_send_dev_disc_req(p2p, dev);
2808 * Use P2P find, if needed, to find the other device from its listen
2811 p2p_set_state(p2p, P2P_CONNECT);
2812 timeout = success ? 500000 : 100000;
2813 if (!success && p2p->go_neg_peer &&
2814 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2817 * Peer is expected to wait our response and we will skip the
2818 * listen phase. Add some randomness to the wait time here to
2819 * make it less likely to hit cases where we could end up in
2820 * sync with peer not listening.
2822 os_get_random((u8 *) &r, sizeof(r));
2823 timeout += r % 100000;
2825 p2p_set_timeout(p2p, 0, timeout);
2829 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2831 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
2833 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2834 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
2837 p2p_set_state(p2p, P2P_CONNECT);
2838 p2p_set_timeout(p2p, 0, 500000);
2842 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2845 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
2846 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2847 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2848 p2p->go_neg_peer->status);
2849 } else if (success) {
2850 struct p2p_device *dev;
2851 dev = p2p_get_device(p2p, addr);
2853 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2854 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
2859 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2860 enum p2p_send_action_result result)
2862 struct p2p_device *dev;
2864 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
2865 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2866 if (result == P2P_SEND_ACTION_FAILED) {
2867 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2870 if (result == P2P_SEND_ACTION_NO_ACK) {
2872 * It looks like the TX status for GO Negotiation Confirm is
2873 * often showing failure even when the peer has actually
2874 * received the frame. Since the peer may change channels
2875 * immediately after having received the frame, we may not see
2876 * an Ack for retries, so just dropping a single frame may
2877 * trigger this. To allow the group formation to succeed if the
2878 * peer did indeed receive the frame, continue regardless of
2881 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
2884 dev = p2p->go_neg_peer;
2888 p2p_go_complete(p2p, dev);
2892 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2893 const u8 *src, const u8 *bssid,
2894 enum p2p_send_action_result result)
2896 enum p2p_pending_action_state state;
2899 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
2900 " src=" MACSTR " bssid=" MACSTR " result=%d",
2901 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2902 MAC2STR(bssid), result);
2903 success = result == P2P_SEND_ACTION_SUCCESS;
2904 state = p2p->pending_action_state;
2905 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2907 case P2P_NO_PENDING_ACTION:
2908 if (p2p->after_scan_tx_in_progress) {
2909 p2p->after_scan_tx_in_progress = 0;
2910 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
2911 p2p_run_after_scan(p2p))
2913 if (p2p->state == P2P_SEARCH) {
2914 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
2915 p2p_continue_find(p2p);
2919 case P2P_PENDING_GO_NEG_REQUEST:
2920 p2p_go_neg_req_cb(p2p, success);
2922 case P2P_PENDING_GO_NEG_RESPONSE:
2923 p2p_go_neg_resp_cb(p2p, success);
2925 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2926 p2p_go_neg_resp_failure_cb(p2p, success, dst);
2928 case P2P_PENDING_GO_NEG_CONFIRM:
2929 p2p_go_neg_conf_cb(p2p, result);
2931 case P2P_PENDING_SD:
2932 p2p_sd_cb(p2p, success);
2934 case P2P_PENDING_PD:
2935 p2p_prov_disc_cb(p2p, success);
2937 case P2P_PENDING_INVITATION_REQUEST:
2938 p2p_invitation_req_cb(p2p, success);
2940 case P2P_PENDING_INVITATION_RESPONSE:
2941 p2p_invitation_resp_cb(p2p, success);
2943 case P2P_PENDING_DEV_DISC_REQUEST:
2944 p2p_dev_disc_req_cb(p2p, success);
2946 case P2P_PENDING_DEV_DISC_RESPONSE:
2947 p2p_dev_disc_resp_cb(p2p, success);
2949 case P2P_PENDING_GO_DISC_REQ:
2950 p2p_go_disc_req_cb(p2p, success);
2954 p2p->after_scan_tx_in_progress = 0;
2958 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2959 unsigned int duration)
2961 if (freq == p2p->pending_client_disc_freq) {
2962 p2p_dbg(p2p, "Client discoverability remain-awake completed");
2963 p2p->pending_client_disc_freq = 0;
2967 if (freq != p2p->pending_listen_freq) {
2968 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
2969 freq, duration, p2p->pending_listen_freq);
2973 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
2974 p2p->pending_listen_sec, p2p->pending_listen_usec,
2975 p2p->pending_listen_freq);
2977 p2p->drv_in_listen = freq;
2978 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
2980 * Add 20 msec extra wait to avoid race condition with driver
2981 * remain-on-channel end event, i.e., give driver more time to
2982 * complete the operation before our timeout expires.
2984 p2p_set_timeout(p2p, p2p->pending_listen_sec,
2985 p2p->pending_listen_usec + 20000);
2988 p2p->pending_listen_freq = 0;
2992 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
2994 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
2995 p2p->drv_in_listen = 0;
2997 return 0; /* Internal timeout will trigger the next step */
2999 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3000 if (p2p->go_neg_peer->connect_reqs >= 120) {
3001 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3002 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3006 p2p_set_state(p2p, P2P_CONNECT);
3007 p2p_connect_send(p2p, p2p->go_neg_peer);
3009 } else if (p2p->state == P2P_SEARCH) {
3010 if (p2p->p2p_scan_running) {
3012 * Search is already in progress. This can happen if
3013 * an Action frame RX is reported immediately after
3014 * the end of a remain-on-channel operation and the
3015 * response frame to that is sent using an offchannel
3016 * operation while in p2p_find. Avoid an attempt to
3017 * restart a scan here.
3019 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3022 if (p2p->pending_listen_freq) {
3024 * Better wait a bit if the driver is unable to start
3025 * offchannel operation for some reason. p2p_search()
3026 * will be started from internal timeout.
3028 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3029 p2p_set_timeout(p2p, 0, 100000);
3032 if (p2p->search_delay) {
3033 p2p_dbg(p2p, "Delay search operation by %u ms",
3035 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3036 (p2p->search_delay % 1000) * 1000);
3047 static void p2p_timeout_connect(struct p2p_data *p2p)
3049 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3050 if (p2p->go_neg_peer &&
3051 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3052 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3053 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3056 if (p2p->go_neg_peer &&
3057 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3058 p2p->go_neg_peer->connect_reqs < 120) {
3059 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3060 p2p_connect_send(p2p, p2p->go_neg_peer);
3064 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3065 p2p_listen_in_find(p2p, 0);
3069 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3071 if (p2p->go_neg_peer) {
3072 if (p2p->drv_in_listen) {
3073 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3077 if (p2p->go_neg_peer->connect_reqs >= 120) {
3078 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3079 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3083 p2p_set_state(p2p, P2P_CONNECT);
3084 p2p_connect_send(p2p, p2p->go_neg_peer);
3086 p2p_set_state(p2p, P2P_IDLE);
3090 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3093 * TODO: could remain constantly in Listen state for some time if there
3094 * are no other concurrent uses for the radio. For now, go to listen
3095 * state once per second to give other uses a chance to use the radio.
3097 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3098 p2p_set_timeout(p2p, 0, 500000);
3102 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3104 struct p2p_device *dev = p2p->go_neg_peer;
3107 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3112 if (dev->wait_count >= 120) {
3113 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3114 p2p_go_neg_failed(p2p, dev, -1);
3118 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3119 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3120 p2p_listen_in_find(p2p, 0);
3124 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3126 p2p_dbg(p2p, "Service Discovery Query timeout");
3128 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3129 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3130 p2p->sd_peer = NULL;
3132 p2p_continue_find(p2p);
3136 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3138 p2p_dbg(p2p, "Provision Discovery Request timeout");
3139 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3140 p2p_continue_find(p2p);
3144 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3146 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3149 * For user initiated PD requests that we have not gotten any responses
3150 * for while in IDLE state, we retry them a couple of times before
3153 if (!p2p->user_initiated_pd)
3156 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3158 if (p2p->pd_retries) {
3162 struct p2p_device *dev;
3165 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3166 if (os_memcmp(p2p->pending_pd_devaddr,
3167 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3169 if (dev->req_config_methods &&
3170 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3174 if (p2p->cfg->prov_disc_fail)
3175 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3176 p2p->pending_pd_devaddr,
3178 P2P_PROV_DISC_TIMEOUT_JOIN :
3179 P2P_PROV_DISC_TIMEOUT);
3180 p2p_reset_pending_pd(p2p);
3185 static void p2p_timeout_invite(struct p2p_data *p2p)
3187 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3188 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3189 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3191 * Better remain on operating channel instead of listen channel
3192 * when running a group.
3194 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3195 p2p_set_timeout(p2p, 0, 100000);
3198 p2p_listen_in_find(p2p, 0);
3202 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3204 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3205 p2p_set_state(p2p, P2P_INVITE);
3206 p2p_invite_send(p2p, p2p->invite_peer,
3207 p2p->invite_go_dev_addr);
3209 if (p2p->invite_peer) {
3210 p2p_dbg(p2p, "Invitation Request retry limit reached");
3211 if (p2p->cfg->invitation_result)
3212 p2p->cfg->invitation_result(
3213 p2p->cfg->cb_ctx, -1, NULL, NULL,
3214 p2p->invite_peer->info.p2p_device_addr);
3216 p2p_set_state(p2p, P2P_IDLE);
3221 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3223 struct p2p_data *p2p = eloop_ctx;
3225 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3229 switch (p2p->state) {
3231 /* Check if we timed out waiting for PD req */
3232 if (p2p->pending_action_state == P2P_PENDING_PD)
3233 p2p_timeout_prov_disc_req(p2p);
3236 /* Check if we timed out waiting for PD req */
3237 if (p2p->pending_action_state == P2P_PENDING_PD)
3238 p2p_timeout_prov_disc_req(p2p);
3239 if (p2p->search_delay && !p2p->in_search_delay) {
3240 p2p_dbg(p2p, "Delay search operation by %u ms",
3242 p2p->in_search_delay = 1;
3243 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3244 (p2p->search_delay % 1000) * 1000);
3247 p2p->in_search_delay = 0;
3251 p2p_timeout_connect(p2p);
3253 case P2P_CONNECT_LISTEN:
3254 p2p_timeout_connect_listen(p2p);
3258 case P2P_LISTEN_ONLY:
3259 /* Check if we timed out waiting for PD req */
3260 if (p2p->pending_action_state == P2P_PENDING_PD)
3261 p2p_timeout_prov_disc_req(p2p);
3263 if (p2p->ext_listen_only) {
3264 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3265 p2p->ext_listen_only = 0;
3266 p2p_set_state(p2p, P2P_IDLE);
3269 case P2P_WAIT_PEER_CONNECT:
3270 p2p_timeout_wait_peer_connect(p2p);
3272 case P2P_WAIT_PEER_IDLE:
3273 p2p_timeout_wait_peer_idle(p2p);
3275 case P2P_SD_DURING_FIND:
3276 p2p_timeout_sd_during_find(p2p);
3278 case P2P_PROVISIONING:
3280 case P2P_PD_DURING_FIND:
3281 p2p_timeout_prov_disc_during_find(p2p);
3284 p2p_timeout_invite(p2p);
3286 case P2P_INVITE_LISTEN:
3287 p2p_timeout_invite_listen(p2p);
3289 case P2P_SEARCH_WHEN_READY:
3291 case P2P_CONTINUE_SEARCH_WHEN_READY:
3297 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3299 struct p2p_device *dev;
3301 dev = p2p_get_device(p2p, peer_addr);
3302 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3303 MACSTR, MAC2STR(peer_addr));
3305 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3308 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3309 dev->flags |= P2P_DEV_USER_REJECTED;
3314 const char * p2p_wps_method_text(enum p2p_wps_method method)
3319 case WPS_PIN_DISPLAY:
3321 case WPS_PIN_KEYPAD:
3331 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3346 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3347 const u8 *addr, int next)
3349 struct p2p_device *dev;
3352 dev = p2p_get_device(p2p, addr);
3354 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3357 dev = dl_list_first(&dev->list, struct p2p_device, list);
3358 if (&dev->list == &p2p->devices)
3369 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3370 char *buf, size_t buflen)
3372 struct p2p_device *dev;
3380 dev = (struct p2p_device *) (((u8 *) info) -
3381 offsetof(struct p2p_device, info));
3387 res = os_snprintf(pos, end - pos,
3391 "interface_addr=" MACSTR "\n"
3392 "member_in_go_dev=" MACSTR "\n"
3393 "member_in_go_iface=" MACSTR "\n"
3394 "go_neg_req_sent=%d\n"
3397 "intended_addr=" MACSTR "\n"
3400 "req_config_methods=0x%x\n"
3401 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3404 "invitation_reqs=%u\n",
3405 (int) (now.sec - dev->last_seen.sec),
3407 p2p_wps_method_text(dev->wps_method),
3408 MAC2STR(dev->interface_addr),
3409 MAC2STR(dev->member_in_go_dev),
3410 MAC2STR(dev->member_in_go_iface),
3411 dev->go_neg_req_sent,
3412 p2p_go_state_text(dev->go_state),
3414 MAC2STR(dev->intended_addr),
3415 dev->country[0] ? dev->country[0] : '_',
3416 dev->country[1] ? dev->country[1] : '_',
3418 dev->req_config_methods,
3419 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3420 "[PROBE_REQ_ONLY]" : "",
3421 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3422 dev->flags & P2P_DEV_NOT_YET_READY ?
3423 "[NOT_YET_READY]" : "",
3424 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3425 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3427 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3428 "[PD_PEER_DISPLAY]" : "",
3429 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3430 "[PD_PEER_KEYPAD]" : "",
3431 dev->flags & P2P_DEV_USER_REJECTED ?
3432 "[USER_REJECTED]" : "",
3433 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3434 "[PEER_WAITING_RESPONSE]" : "",
3435 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3436 "[PREFER_PERSISTENT_GROUP]" : "",
3437 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3438 "[WAIT_GO_NEG_RESPONSE]" : "",
3439 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3440 "[WAIT_GO_NEG_CONFIRM]" : "",
3441 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3442 "[GROUP_CLIENT_ONLY]" : "",
3443 dev->flags & P2P_DEV_FORCE_FREQ ?
3444 "[FORCE_FREQ]" : "",
3445 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3446 "[PD_FOR_JOIN]" : "",
3449 dev->invitation_reqs);
3450 if (res < 0 || res >= end - pos)
3454 if (dev->ext_listen_period) {
3455 res = os_snprintf(pos, end - pos,
3456 "ext_listen_period=%u\n"
3457 "ext_listen_interval=%u\n",
3458 dev->ext_listen_period,
3459 dev->ext_listen_interval);
3460 if (res < 0 || res >= end - pos)
3465 if (dev->oper_ssid_len) {
3466 res = os_snprintf(pos, end - pos,
3468 wpa_ssid_txt(dev->oper_ssid,
3469 dev->oper_ssid_len));
3470 if (res < 0 || res >= end - pos)
3475 #ifdef CONFIG_WIFI_DISPLAY
3476 if (dev->info.wfd_subelems) {
3477 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3478 if (res < 0 || res >= end - pos)
3482 pos += wpa_snprintf_hex(pos, end - pos,
3483 wpabuf_head(dev->info.wfd_subelems),
3484 wpabuf_len(dev->info.wfd_subelems));
3486 res = os_snprintf(pos, end - pos, "\n");
3487 if (res < 0 || res >= end - pos)
3491 #endif /* CONFIG_WIFI_DISPLAY */
3497 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3499 return p2p_get_device(p2p, addr) != NULL;
3503 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3506 p2p_dbg(p2p, "Client discoverability enabled");
3507 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3509 p2p_dbg(p2p, "Client discoverability disabled");
3510 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3515 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3516 u32 duration2, u32 interval2)
3519 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3522 req = wpabuf_alloc(100);
3526 if (duration1 || interval1) {
3527 os_memset(&desc1, 0, sizeof(desc1));
3528 desc1.count_type = 1;
3529 desc1.duration = duration1;
3530 desc1.interval = interval1;
3533 if (duration2 || interval2) {
3534 os_memset(&desc2, 0, sizeof(desc2));
3535 desc2.count_type = 2;
3536 desc2.duration = duration2;
3537 desc2.interval = interval2;
3542 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3543 len = p2p_buf_add_ie_hdr(req);
3544 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3545 p2p_buf_update_ie_hdr(req, len);
3551 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3552 const u8 *own_interface_addr, unsigned int freq,
3553 u32 duration1, u32 interval1, u32 duration2,
3558 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3559 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3561 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3562 freq, duration1, interval1, duration2, interval2);
3564 req = p2p_build_presence_req(duration1, interval1, duration2,
3569 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3570 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3572 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3573 p2p_dbg(p2p, "Failed to send Action frame");
3581 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3582 size_t noa_len, u8 dialog_token)
3584 struct wpabuf *resp;
3587 resp = wpabuf_alloc(100 + noa_len);
3591 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3592 len = p2p_buf_add_ie_hdr(resp);
3593 p2p_buf_add_status(resp, status);
3595 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3596 wpabuf_put_le16(resp, noa_len);
3597 wpabuf_put_data(resp, noa, noa_len);
3599 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3600 p2p_buf_update_ie_hdr(resp, len);
3606 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3607 const u8 *sa, const u8 *data, size_t len,
3610 struct p2p_message msg;
3612 struct wpabuf *resp;
3614 struct p2p_group *group = NULL;
3619 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3621 for (g = 0; g < p2p->num_groups; g++) {
3622 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3624 group = p2p->groups[g];
3628 if (group == NULL) {
3629 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3630 MACSTR, MAC2STR(da));
3634 if (p2p_parse(data, len, &msg) < 0) {
3635 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3636 status = P2P_SC_FAIL_INVALID_PARAMS;
3641 if (msg.noa == NULL) {
3642 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3643 status = P2P_SC_FAIL_INVALID_PARAMS;
3647 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3650 if (p2p->cfg->get_noa)
3651 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3655 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3656 noa_len > 0 ? noa_len : 0,
3659 p2p_parse_free(&msg);
3663 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3664 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3665 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3666 p2p_dbg(p2p, "Failed to send Action frame");
3672 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3673 const u8 *sa, const u8 *data, size_t len)
3675 struct p2p_message msg;
3677 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3679 if (p2p_parse(data, len, &msg) < 0) {
3680 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3684 if (msg.status == NULL || msg.noa == NULL) {
3685 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3686 p2p_parse_free(&msg);
3691 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3693 p2p_parse_free(&msg);
3697 p2p_dbg(p2p, "P2P Presence Request was accepted");
3698 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3699 msg.noa, msg.noa_len);
3700 /* TODO: process NoA */
3701 p2p_parse_free(&msg);
3705 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3707 struct p2p_data *p2p = eloop_ctx;
3709 if (p2p->ext_listen_interval) {
3710 /* Schedule next extended listen timeout */
3711 eloop_register_timeout(p2p->ext_listen_interval_sec,
3712 p2p->ext_listen_interval_usec,
3713 p2p_ext_listen_timeout, p2p, NULL);
3716 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3718 * This should not really happen, but it looks like the Listen
3719 * command may fail is something else (e.g., a scan) was
3720 * running at an inconvenient time. As a workaround, allow new
3721 * Extended Listen operation to be started.
3723 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3724 p2p->ext_listen_only = 0;
3725 p2p_set_state(p2p, P2P_IDLE);
3728 if (p2p->state != P2P_IDLE) {
3729 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3733 p2p_dbg(p2p, "Extended Listen timeout");
3734 p2p->ext_listen_only = 1;
3735 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3736 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3737 p2p->ext_listen_only = 0;
3742 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3743 unsigned int interval)
3745 if (period > 65535 || interval > 65535 || period > interval ||
3746 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3747 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3752 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3754 if (interval == 0) {
3755 p2p_dbg(p2p, "Disabling Extended Listen Timing");
3756 p2p->ext_listen_period = 0;
3757 p2p->ext_listen_interval = 0;
3761 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3763 p2p->ext_listen_period = period;
3764 p2p->ext_listen_interval = interval;
3765 p2p->ext_listen_interval_sec = interval / 1000;
3766 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3768 eloop_register_timeout(p2p->ext_listen_interval_sec,
3769 p2p->ext_listen_interval_usec,
3770 p2p_ext_listen_timeout, p2p, NULL);
3776 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3777 const u8 *ie, size_t ie_len)
3779 struct p2p_message msg;
3781 if (bssid == NULL || ie == NULL)
3784 os_memset(&msg, 0, sizeof(msg));
3785 if (p2p_parse_ies(ie, ie_len, &msg))
3787 if (msg.minor_reason_code == NULL)
3790 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
3791 " reason_code=%u minor_reason_code=%u",
3792 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3794 p2p_parse_free(&msg);
3798 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3799 const u8 *ie, size_t ie_len)
3801 struct p2p_message msg;
3803 if (bssid == NULL || ie == NULL)
3806 os_memset(&msg, 0, sizeof(msg));
3807 if (p2p_parse_ies(ie, ie_len, &msg))
3809 if (msg.minor_reason_code == NULL)
3812 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
3813 " reason_code=%u minor_reason_code=%u",
3814 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3816 p2p_parse_free(&msg);
3820 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3823 p2p_dbg(p2p, "Managed P2P Device operations enabled");
3824 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3826 p2p_dbg(p2p, "Managed P2P Device operations disabled");
3827 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3832 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3834 if (p2p_channel_to_freq(reg_class, channel) < 0)
3837 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
3838 reg_class, channel);
3839 p2p->cfg->reg_class = reg_class;
3840 p2p->cfg->channel = channel;
3846 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3848 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
3849 if (postfix == NULL) {
3850 p2p->cfg->ssid_postfix_len = 0;
3853 if (len > sizeof(p2p->cfg->ssid_postfix))
3855 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3856 p2p->cfg->ssid_postfix_len = len;
3861 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3864 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
3867 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
3868 op_reg_class, op_channel);
3869 p2p->cfg->op_reg_class = op_reg_class;
3870 p2p->cfg->op_channel = op_channel;
3871 p2p->cfg->cfg_op_channel = cfg_op_channel;
3876 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3877 const struct p2p_channel *pref_chan)
3879 struct p2p_channel *n;
3882 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3885 os_memcpy(n, pref_chan,
3886 num_pref_chan * sizeof(struct p2p_channel));
3890 os_free(p2p->cfg->pref_chan);
3891 p2p->cfg->pref_chan = n;
3892 p2p->cfg->num_pref_chan = num_pref_chan;
3898 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3901 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3902 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3904 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3909 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3912 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3915 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
3920 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3922 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
3923 if (is_zero_ether_addr(p2p->peer_filter))
3924 p2p_dbg(p2p, "Disable peer filter");
3926 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
3927 MAC2STR(p2p->peer_filter));
3931 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
3933 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
3934 if (p2p->cross_connect == enabled)
3936 p2p->cross_connect = enabled;
3937 /* TODO: may need to tear down any action group where we are GO(?) */
3941 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
3943 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3946 if (dev->oper_freq <= 0)
3948 return dev->oper_freq;
3952 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
3954 p2p_dbg(p2p, "Intra BSS distribution %s",
3955 enabled ? "enabled" : "disabled");
3956 p2p->cfg->p2p_intra_bss = enabled;
3960 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
3962 p2p_dbg(p2p, "Update channel list");
3963 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
3967 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3968 const u8 *src, const u8 *bssid, const u8 *buf,
3969 size_t len, unsigned int wait_time)
3971 if (p2p->p2p_scan_running) {
3972 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
3973 if (p2p->after_scan_tx) {
3974 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
3975 os_free(p2p->after_scan_tx);
3977 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
3979 if (p2p->after_scan_tx == NULL)
3981 p2p->after_scan_tx->freq = freq;
3982 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
3983 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
3984 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
3985 p2p->after_scan_tx->len = len;
3986 p2p->after_scan_tx->wait_time = wait_time;
3987 os_memcpy(p2p->after_scan_tx + 1, buf, len);
3991 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
3992 buf, len, wait_time);
3996 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
3999 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4000 freq_24, freq_5, freq_overall);
4001 p2p->best_freq_24 = freq_24;
4002 p2p->best_freq_5 = freq_5;
4003 p2p->best_freq_overall = freq_overall;
4007 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4009 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4010 p2p->own_freq_preference = freq;
4014 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4016 if (p2p == NULL || p2p->go_neg_peer == NULL)
4018 return p2p->go_neg_peer->info.p2p_device_addr;
4022 const struct p2p_peer_info *
4023 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4025 struct p2p_device *dev;
4028 dev = p2p_get_device(p2p, addr);
4033 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4039 dev = dl_list_first(&dev->list,
4042 if (&dev->list == &p2p->devices)
4044 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4047 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4050 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4051 dev = dl_list_first(&dev->list,
4054 if (&dev->list == &p2p->devices)
4063 int p2p_in_progress(struct p2p_data *p2p)
4067 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY ||
4068 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY)
4070 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4074 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4078 p2p->go_timeout = go_timeout;
4079 p2p->client_timeout = client_timeout;
4084 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay)
4086 if (p2p && p2p->search_delay < delay)
4087 p2p->search_delay = delay;
4091 #ifdef CONFIG_WIFI_DISPLAY
4093 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4096 struct p2p_group *group;
4098 for (g = 0; g < p2p->num_groups; g++) {
4099 group = p2p->groups[g];
4100 p2p_group_update_ies(group);
4105 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4107 wpabuf_free(p2p->wfd_ie_beacon);
4108 p2p->wfd_ie_beacon = ie;
4109 p2p_update_wfd_ie_groups(p2p);
4114 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4116 wpabuf_free(p2p->wfd_ie_probe_req);
4117 p2p->wfd_ie_probe_req = ie;
4122 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4124 wpabuf_free(p2p->wfd_ie_probe_resp);
4125 p2p->wfd_ie_probe_resp = ie;
4126 p2p_update_wfd_ie_groups(p2p);
4131 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4133 wpabuf_free(p2p->wfd_ie_assoc_req);
4134 p2p->wfd_ie_assoc_req = ie;
4139 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4141 wpabuf_free(p2p->wfd_ie_invitation);
4142 p2p->wfd_ie_invitation = ie;
4147 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4149 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4150 p2p->wfd_ie_prov_disc_req = ie;
4155 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4157 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4158 p2p->wfd_ie_prov_disc_resp = ie;
4163 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4165 wpabuf_free(p2p->wfd_ie_go_neg);
4166 p2p->wfd_ie_go_neg = ie;
4171 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4173 wpabuf_free(p2p->wfd_dev_info);
4175 p2p->wfd_dev_info = wpabuf_dup(elem);
4176 if (p2p->wfd_dev_info == NULL)
4179 p2p->wfd_dev_info = NULL;
4185 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4187 wpabuf_free(p2p->wfd_assoc_bssid);
4189 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4190 if (p2p->wfd_assoc_bssid == NULL)
4193 p2p->wfd_assoc_bssid = NULL;
4199 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4200 const struct wpabuf *elem)
4202 wpabuf_free(p2p->wfd_coupled_sink_info);
4204 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4205 if (p2p->wfd_coupled_sink_info == NULL)
4208 p2p->wfd_coupled_sink_info = NULL;
4213 #endif /* CONFIG_WIFI_DISPLAY */
4216 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4219 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4222 p2p->min_disc_int = min_disc_int;
4223 p2p->max_disc_int = max_disc_int;
4224 p2p->max_disc_tu = max_disc_tu;
4225 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4226 min_disc_int, max_disc_int, max_disc_tu);
4232 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4237 if (!p2p->cfg->debug_print)
4241 vsnprintf(buf, sizeof(buf), fmt, ap);
4242 buf[sizeof(buf) - 1] = '\0';
4244 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4248 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4253 if (!p2p->cfg->debug_print)
4257 vsnprintf(buf, sizeof(buf), fmt, ap);
4258 buf[sizeof(buf) - 1] = '\0';
4260 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4264 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4269 if (!p2p->cfg->debug_print)
4273 vsnprintf(buf, sizeof(buf), fmt, ap);
4274 buf[sizeof(buf) - 1] = '\0';
4276 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);