2 * Wi-Fi Direct - P2P module
3 * Copyright (c) 2009-2010, Atheros Communications
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
13 #include "common/ieee802_11_defs.h"
14 #include "common/ieee802_11_common.h"
15 #include "common/wpa_ctrl.h"
16 #include "wps/wps_i.h"
21 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
22 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
23 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
24 const u8 *sa, const u8 *data, size_t len,
26 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
27 const u8 *sa, const u8 *data,
29 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
30 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
34 * p2p_scan recovery timeout
36 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
37 * timeout for this to avoid hitting P2P timeout unnecessarily.
39 #define P2P_SCAN_TIMEOUT 35
42 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
43 * entries will be removed
45 #ifndef P2P_PEER_EXPIRATION_AGE
46 #define P2P_PEER_EXPIRATION_AGE 60
47 #endif /* P2P_PEER_EXPIRATION_AGE */
49 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
51 static void p2p_expire_peers(struct p2p_data *p2p)
53 struct p2p_device *dev, *n;
54 struct os_reltime now;
58 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
59 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
62 if (dev == p2p->go_neg_peer) {
64 * GO Negotiation is in progress with the peer, so
65 * don't expire the peer entry until GO Negotiation
71 if (p2p->cfg->go_connected &&
72 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
73 dev->info.p2p_device_addr)) {
75 * We are connected as a client to a group in which the
76 * peer is the GO, so do not expire the peer entry.
78 os_get_reltime(&dev->last_seen);
82 for (i = 0; i < p2p->num_groups; i++) {
83 if (p2p_group_is_client_connected(
84 p2p->groups[i], dev->info.p2p_device_addr))
87 if (i < p2p->num_groups) {
89 * The peer is connected as a client in a group where
90 * we are the GO, so do not expire the peer entry.
92 os_get_reltime(&dev->last_seen);
96 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
97 MAC2STR(dev->info.p2p_device_addr));
98 dl_list_del(&dev->list);
99 p2p_device_free(p2p, dev);
104 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
106 struct p2p_data *p2p = eloop_ctx;
107 p2p_expire_peers(p2p);
108 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
109 p2p_expiration_timeout, p2p, NULL);
113 static const char * p2p_state_txt(int state)
122 case P2P_CONNECT_LISTEN:
123 return "CONNECT_LISTEN";
126 case P2P_LISTEN_ONLY:
127 return "LISTEN_ONLY";
128 case P2P_WAIT_PEER_CONNECT:
129 return "WAIT_PEER_CONNECT";
130 case P2P_WAIT_PEER_IDLE:
131 return "WAIT_PEER_IDLE";
132 case P2P_SD_DURING_FIND:
133 return "SD_DURING_FIND";
134 case P2P_PROVISIONING:
135 return "PROVISIONING";
136 case P2P_PD_DURING_FIND:
137 return "PD_DURING_FIND";
140 case P2P_INVITE_LISTEN:
141 return "INVITE_LISTEN";
148 const char * p2p_get_state_txt(struct p2p_data *p2p)
150 return p2p_state_txt(p2p->state);
154 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
156 struct p2p_device *dev = NULL;
161 dev = p2p_get_device(p2p, addr);
163 return dev->wps_prov_info;
169 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
171 struct p2p_device *dev = NULL;
176 dev = p2p_get_device(p2p, addr);
178 dev->wps_prov_info = 0;
182 void p2p_set_state(struct p2p_data *p2p, int new_state)
184 p2p_dbg(p2p, "State %s -> %s",
185 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
186 p2p->state = new_state;
188 if (new_state == P2P_IDLE && p2p->pending_channel) {
189 p2p_dbg(p2p, "Apply change in listen channel");
190 p2p->cfg->reg_class = p2p->pending_reg_class;
191 p2p->cfg->channel = p2p->pending_channel;
192 p2p->pending_reg_class = 0;
193 p2p->pending_channel = 0;
198 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
200 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
201 p2p_state_txt(p2p->state), sec, usec);
202 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
203 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
207 void p2p_clear_timeout(struct p2p_data *p2p)
209 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
210 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
214 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
217 struct p2p_go_neg_results res;
218 p2p_clear_timeout(p2p);
219 p2p_set_state(p2p, P2P_IDLE);
220 if (p2p->go_neg_peer) {
221 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
222 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
223 p2p->go_neg_peer->oob_pw_id = 0;
225 p2p->go_neg_peer = NULL;
227 os_memset(&res, 0, sizeof(res));
230 wpabuf_free(peer->go_neg_conf);
231 peer->go_neg_conf = NULL;
232 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
234 os_memcpy(res.peer_interface_addr, peer->intended_addr,
237 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
241 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
247 p2p_dbg(p2p, "Starting short listen state (state=%s)",
248 p2p_state_txt(p2p->state));
250 if (p2p->pending_listen_freq) {
251 /* We have a pending p2p_listen request */
252 p2p_dbg(p2p, "p2p_listen command pending already");
256 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
258 p2p_dbg(p2p, "Unknown regulatory class/channel");
262 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
264 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
265 p2p->min_disc_int) * 100;
266 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
267 tu = p2p->max_disc_tu;
268 if (!dev_disc && tu < 100)
269 tu = 100; /* Need to wait in non-device discovery use cases */
270 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
271 tu = p2p->cfg->max_listen * 1000 / 1024;
274 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
275 p2p_set_timeout(p2p, 0, 0);
279 ies = p2p_build_probe_resp_ies(p2p);
283 p2p->pending_listen_freq = freq;
284 p2p->pending_listen_sec = 0;
285 p2p->pending_listen_usec = 1024 * tu;
287 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
289 p2p_dbg(p2p, "Failed to start listen mode");
290 p2p->pending_listen_freq = 0;
296 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
301 p2p_dbg(p2p, "Going to listen(only) state");
303 if (p2p->pending_listen_freq) {
304 /* We have a pending p2p_listen request */
305 p2p_dbg(p2p, "p2p_listen command pending already");
309 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
311 p2p_dbg(p2p, "Unknown regulatory class/channel");
315 p2p->pending_listen_sec = timeout / 1000;
316 p2p->pending_listen_usec = (timeout % 1000) * 1000;
318 if (p2p->p2p_scan_running) {
319 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
320 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
323 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
324 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
328 ies = p2p_build_probe_resp_ies(p2p);
332 p2p->pending_listen_freq = freq;
334 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
335 p2p_dbg(p2p, "Failed to start listen mode");
336 p2p->pending_listen_freq = 0;
342 p2p_set_state(p2p, P2P_LISTEN_ONLY);
348 static void p2p_device_clear_reported(struct p2p_data *p2p)
350 struct p2p_device *dev;
351 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
352 dev->flags &= ~P2P_DEV_REPORTED;
359 * p2p_get_device - Fetch a peer entry
360 * @p2p: P2P module context from p2p_init()
361 * @addr: P2P Device Address of the peer
362 * Returns: Pointer to the device entry or %NULL if not found
364 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
366 struct p2p_device *dev;
367 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
368 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
376 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
377 * @p2p: P2P module context from p2p_init()
378 * @addr: P2P Interface Address of the peer
379 * Returns: Pointer to the device entry or %NULL if not found
381 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
384 struct p2p_device *dev;
385 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
386 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
394 * p2p_create_device - Create a peer entry
395 * @p2p: P2P module context from p2p_init()
396 * @addr: P2P Device Address of the peer
397 * Returns: Pointer to the device entry or %NULL on failure
399 * If there is already an entry for the peer, it will be returned instead of
400 * creating a new one.
402 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
405 struct p2p_device *dev, *oldest = NULL;
408 dev = p2p_get_device(p2p, addr);
412 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
414 if (oldest == NULL ||
415 os_reltime_before(&dev->last_seen, &oldest->last_seen))
418 if (count + 1 > p2p->cfg->max_peers && oldest) {
419 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
420 dl_list_del(&oldest->list);
421 p2p_device_free(p2p, oldest);
424 dev = os_zalloc(sizeof(*dev));
427 dl_list_add(&p2p->devices, &dev->list);
428 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
434 static void p2p_copy_client_info(struct p2p_device *dev,
435 struct p2p_client_info *cli)
437 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
438 dev->info.device_name[cli->dev_name_len] = '\0';
439 dev->info.dev_capab = cli->dev_capab;
440 dev->info.config_methods = cli->config_methods;
441 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
442 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
443 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
444 dev->info.wps_sec_dev_type_list_len);
448 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
449 const u8 *go_interface_addr, int freq,
450 const u8 *gi, size_t gi_len)
452 struct p2p_group_info info;
454 struct p2p_device *dev;
459 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
463 * Clear old data for this group; if the devices are still in the
464 * group, the information will be restored in the loop following this.
466 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
467 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
469 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
470 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
474 for (c = 0; c < info.num_clients; c++) {
475 struct p2p_client_info *cli = &info.client[c];
476 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
478 continue; /* ignore our own entry */
479 dev = p2p_get_device(p2p, cli->p2p_device_addr);
481 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
482 P2P_DEV_PROBE_REQ_ONLY)) {
484 * Update information since we have not
485 * received this directly from the client.
487 p2p_copy_client_info(dev, cli);
490 * Need to update P2P Client Discoverability
491 * flag since it is valid only in P2P Group
494 dev->info.dev_capab &=
495 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
496 dev->info.dev_capab |=
498 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
500 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
501 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
504 dev = p2p_create_device(p2p, cli->p2p_device_addr);
507 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
508 p2p_copy_client_info(dev, cli);
509 dev->oper_freq = freq;
510 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
511 dev->info.p2p_device_addr,
513 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
516 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
518 os_get_reltime(&dev->last_seen);
519 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
520 os_memcpy(dev->member_in_go_iface, go_interface_addr,
528 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
529 int probe_req, const struct p2p_message *msg)
531 os_memcpy(dev->info.device_name, msg->device_name,
532 sizeof(dev->info.device_name));
534 if (msg->manufacturer &&
535 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
536 os_memset(dev->info.manufacturer, 0,
537 sizeof(dev->info.manufacturer));
538 os_memcpy(dev->info.manufacturer, msg->manufacturer,
539 msg->manufacturer_len);
542 if (msg->model_name &&
543 msg->model_name_len < sizeof(dev->info.model_name)) {
544 os_memset(dev->info.model_name, 0,
545 sizeof(dev->info.model_name));
546 os_memcpy(dev->info.model_name, msg->model_name,
547 msg->model_name_len);
550 if (msg->model_number &&
551 msg->model_number_len < sizeof(dev->info.model_number)) {
552 os_memset(dev->info.model_number, 0,
553 sizeof(dev->info.model_number));
554 os_memcpy(dev->info.model_number, msg->model_number,
555 msg->model_number_len);
558 if (msg->serial_number &&
559 msg->serial_number_len < sizeof(dev->info.serial_number)) {
560 os_memset(dev->info.serial_number, 0,
561 sizeof(dev->info.serial_number));
562 os_memcpy(dev->info.serial_number, msg->serial_number,
563 msg->serial_number_len);
566 if (msg->pri_dev_type)
567 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
568 sizeof(dev->info.pri_dev_type));
569 else if (msg->wps_pri_dev_type)
570 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
571 sizeof(dev->info.pri_dev_type));
573 if (msg->wps_sec_dev_type_list) {
574 os_memcpy(dev->info.wps_sec_dev_type_list,
575 msg->wps_sec_dev_type_list,
576 msg->wps_sec_dev_type_list_len);
577 dev->info.wps_sec_dev_type_list_len =
578 msg->wps_sec_dev_type_list_len;
581 if (msg->capability) {
583 * P2P Client Discoverability bit is reserved in all frames
584 * that use this function, so do not change its value here.
586 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
587 dev->info.dev_capab |= msg->capability[0] &
588 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
589 dev->info.group_capab = msg->capability[1];
592 if (msg->ext_listen_timing) {
593 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
594 dev->ext_listen_interval =
595 WPA_GET_LE16(msg->ext_listen_timing + 2);
599 u16 new_config_methods;
600 new_config_methods = msg->config_methods ?
601 msg->config_methods : msg->wps_config_methods;
602 if (new_config_methods &&
603 dev->info.config_methods != new_config_methods) {
604 p2p_dbg(p2p, "Update peer " MACSTR
605 " config_methods 0x%x -> 0x%x",
606 MAC2STR(dev->info.p2p_device_addr),
607 dev->info.config_methods,
609 dev->info.config_methods = new_config_methods;
615 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
621 wpabuf_free(dev->info.vendor_elems);
622 dev->info.vendor_elems = NULL;
626 for (pos = ies; pos + 1 < end; pos += len) {
633 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
637 u32 type = WPA_GET_BE32(pos);
639 if (type == WPA_IE_VENDOR_TYPE ||
640 type == WMM_IE_VENDOR_TYPE ||
641 type == WPS_IE_VENDOR_TYPE ||
642 type == P2P_IE_VENDOR_TYPE ||
643 type == WFD_IE_VENDOR_TYPE)
647 /* Unknown vendor element - make raw IE data available */
648 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
650 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
655 static int p2p_compare_wfd_info(struct p2p_device *dev,
656 const struct p2p_message *msg)
658 if (dev->info.wfd_subelems && msg->wfd_subelems) {
659 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
662 return os_memcmp(dev->info.wfd_subelems->buf,
663 msg->wfd_subelems->buf,
664 dev->info.wfd_subelems->used);
666 if (dev->info.wfd_subelems || msg->wfd_subelems)
674 * p2p_add_device - Add peer entries based on scan results or P2P frames
675 * @p2p: P2P module context from p2p_init()
676 * @addr: Source address of Beacon or Probe Response frame (may be either
677 * P2P Device Address or P2P Interface Address)
678 * @level: Signal level (signal strength of the received frame from the peer)
679 * @freq: Frequency on which the Beacon or Probe Response frame was received
680 * @rx_time: Time when the result was received
681 * @ies: IEs from the Beacon or Probe Response frame
682 * @ies_len: Length of ies buffer in octets
683 * @scan_res: Whether this was based on scan results
684 * Returns: 0 on success, -1 on failure
686 * If the scan result is for a GO, the clients in the group will also be added
687 * to the peer table. This function can also be used with some other frames
688 * like Provision Discovery Request that contains P2P Capability and P2P Device
691 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
692 struct os_reltime *rx_time, int level, const u8 *ies,
693 size_t ies_len, int scan_res)
695 struct p2p_device *dev;
696 struct p2p_message msg;
697 const u8 *p2p_dev_addr;
700 struct os_reltime time_now;
702 os_memset(&msg, 0, sizeof(msg));
703 if (p2p_parse_ies(ies, ies_len, &msg)) {
704 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
705 p2p_parse_free(&msg);
709 if (msg.p2p_device_addr)
710 p2p_dev_addr = msg.p2p_device_addr;
711 else if (msg.device_id)
712 p2p_dev_addr = msg.device_id;
714 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
715 p2p_parse_free(&msg);
719 if (!is_zero_ether_addr(p2p->peer_filter) &&
720 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
721 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
722 " due to peer filter", MAC2STR(p2p_dev_addr));
723 p2p_parse_free(&msg);
727 dev = p2p_create_device(p2p, p2p_dev_addr);
729 p2p_parse_free(&msg);
733 if (rx_time == NULL) {
734 os_get_reltime(&time_now);
739 * Update the device entry only if the new peer
740 * entry is newer than the one previously stored.
742 if (dev->last_seen.sec > 0 &&
743 os_reltime_before(rx_time, &dev->last_seen)) {
744 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
745 (unsigned int) rx_time->sec,
746 (unsigned int) rx_time->usec,
747 (unsigned int) dev->last_seen.sec,
748 (unsigned int) dev->last_seen.usec);
749 p2p_parse_free(&msg);
753 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
755 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
757 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
758 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
760 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
761 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
763 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
764 dev->oper_ssid_len = msg.ssid[1];
767 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
768 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
770 if (*msg.ds_params == 14)
773 ds_freq = 2407 + *msg.ds_params * 5;
774 if (freq != ds_freq) {
775 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
781 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
782 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
783 MACSTR " %d -> %d MHz (DS param %d)",
784 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
785 freq, msg.ds_params ? *msg.ds_params : -1);
788 dev->listen_freq = freq;
790 dev->oper_freq = freq;
792 dev->info.level = level;
794 p2p_copy_wps_info(p2p, dev, 0, &msg);
796 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
797 wpabuf_free(dev->info.wps_vendor_ext[i]);
798 dev->info.wps_vendor_ext[i] = NULL;
801 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
802 if (msg.wps_vendor_ext[i] == NULL)
804 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
805 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
806 if (dev->info.wps_vendor_ext[i] == NULL)
810 wfd_changed = p2p_compare_wfd_info(dev, &msg);
812 if (msg.wfd_subelems) {
813 wpabuf_free(dev->info.wfd_subelems);
814 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
818 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
819 msg.group_info, msg.group_info_len);
822 p2p_parse_free(&msg);
824 p2p_update_peer_vendor_elems(dev, ies, ies_len);
826 if (dev->flags & P2P_DEV_REPORTED && !wfd_changed)
829 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
830 freq, (unsigned int) rx_time->sec,
831 (unsigned int) rx_time->usec);
832 if (dev->flags & P2P_DEV_USER_REJECTED) {
833 p2p_dbg(p2p, "Do not report rejected device");
837 if (dev->info.config_methods == 0 &&
838 (freq == 2412 || freq == 2437 || freq == 2462)) {
840 * If we have only seen a Beacon frame from a GO, we do not yet
841 * know what WPS config methods it supports. Since some
842 * applications use config_methods value from P2P-DEVICE-FOUND
843 * events, postpone reporting this peer until we've fully
844 * discovered its capabilities.
846 * At least for now, do this only if the peer was detected on
847 * one of the social channels since that peer can be easily be
848 * found again and there are no limitations of having to use
849 * passive scan on this channels, so this can be done through
850 * Probe Response frame that includes the config_methods
853 p2p_dbg(p2p, "Do not report peer " MACSTR
854 " with unknown config methods", MAC2STR(addr));
858 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
859 !(dev->flags & P2P_DEV_REPORTED_ONCE));
860 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
866 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
870 if (p2p->go_neg_peer == dev) {
872 * If GO Negotiation is in progress, report that it has failed.
874 p2p_go_neg_failed(p2p, dev, -1);
875 p2p->go_neg_peer = NULL;
877 if (p2p->invite_peer == dev)
878 p2p->invite_peer = NULL;
879 if (p2p->sd_peer == dev)
881 if (p2p->pending_client_disc_go == dev)
882 p2p->pending_client_disc_go = NULL;
884 /* dev_lost() device, but only if it was previously dev_found() */
885 if (dev->flags & P2P_DEV_REPORTED_ONCE)
886 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
887 dev->info.p2p_device_addr);
889 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
890 wpabuf_free(dev->info.wps_vendor_ext[i]);
891 dev->info.wps_vendor_ext[i] = NULL;
894 wpabuf_free(dev->info.wfd_subelems);
895 wpabuf_free(dev->info.vendor_elems);
896 wpabuf_free(dev->go_neg_conf);
902 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
904 struct p2p_channels *c;
905 struct p2p_reg_class *cla;
912 c = &p2p->cfg->channels;
913 for (cl = 0; cl < c->reg_classes; cl++) {
914 cla = &c->reg_class[cl];
915 if (cla->reg_class != p2p->last_prog_scan_class)
917 for (ch = 0; ch < cla->channels; ch++) {
918 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
928 /* Start from beginning */
929 reg_class = c->reg_class[0].reg_class;
930 channel = c->reg_class[0].channel[0];
932 /* Pick the next channel */
934 if (ch == cla->channels) {
936 if (cl == c->reg_classes)
940 reg_class = c->reg_class[cl].reg_class;
941 channel = c->reg_class[cl].channel[ch];
944 freq = p2p_channel_to_freq(reg_class, channel);
945 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
946 reg_class, channel, freq);
947 p2p->last_prog_scan_class = reg_class;
948 p2p->last_prog_scan_chan = channel;
950 if (freq == 2412 || freq == 2437 || freq == 2462)
951 return 0; /* No need to add social channels */
956 static void p2p_search(struct p2p_data *p2p)
959 enum p2p_scan_type type;
960 u16 pw_id = DEV_PW_DEFAULT;
963 if (p2p->drv_in_listen) {
964 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
967 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
969 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
970 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
971 type = P2P_SCAN_SOCIAL_PLUS_ONE;
972 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
974 type = P2P_SCAN_SOCIAL;
975 p2p_dbg(p2p, "Starting search");
978 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
979 p2p->num_req_dev_types, p2p->req_dev_types,
980 p2p->find_dev_id, pw_id);
982 p2p_dbg(p2p, "Scan request failed");
983 p2p_continue_find(p2p);
985 p2p_dbg(p2p, "Running p2p_scan");
986 p2p->p2p_scan_running = 1;
987 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
988 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
994 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
996 struct p2p_data *p2p = eloop_ctx;
997 p2p_dbg(p2p, "Find timeout -> stop");
1002 static int p2p_run_after_scan(struct p2p_data *p2p)
1004 struct p2p_device *dev;
1005 enum p2p_after_scan op;
1007 if (p2p->after_scan_tx) {
1008 p2p->after_scan_tx_in_progress = 1;
1009 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1010 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1011 p2p->after_scan_tx->freq,
1012 p2p->after_scan_tx->dst,
1013 p2p->after_scan_tx->src,
1014 p2p->after_scan_tx->bssid,
1015 (u8 *) (p2p->after_scan_tx + 1),
1016 p2p->after_scan_tx->len,
1017 p2p->after_scan_tx->wait_time);
1018 os_free(p2p->after_scan_tx);
1019 p2p->after_scan_tx = NULL;
1023 op = p2p->start_after_scan;
1024 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1026 case P2P_AFTER_SCAN_NOTHING:
1028 case P2P_AFTER_SCAN_LISTEN:
1029 p2p_dbg(p2p, "Start previously requested Listen state");
1030 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1031 p2p->pending_listen_usec / 1000);
1033 case P2P_AFTER_SCAN_CONNECT:
1034 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1035 MAC2STR(p2p->after_scan_peer));
1036 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1038 p2p_dbg(p2p, "Peer not known anymore");
1041 p2p_connect_send(p2p, dev);
1049 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1051 struct p2p_data *p2p = eloop_ctx;
1053 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1054 running = p2p->p2p_scan_running;
1055 /* Make sure we recover from missed scan results callback */
1056 p2p->p2p_scan_running = 0;
1059 p2p_run_after_scan(p2p);
1063 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1065 p2p->num_req_dev_types = 0;
1066 os_free(p2p->req_dev_types);
1067 p2p->req_dev_types = NULL;
1071 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1072 enum p2p_discovery_type type,
1073 unsigned int num_req_dev_types, const u8 *req_dev_types,
1074 const u8 *dev_id, unsigned int search_delay)
1078 p2p_dbg(p2p, "Starting find (type=%d)", type);
1079 os_get_reltime(&p2p->find_start);
1080 if (p2p->p2p_scan_running) {
1081 p2p_dbg(p2p, "p2p_scan is already running");
1084 p2p_free_req_dev_types(p2p);
1085 if (req_dev_types && num_req_dev_types) {
1086 p2p->req_dev_types = os_malloc(num_req_dev_types *
1088 if (p2p->req_dev_types == NULL)
1090 os_memcpy(p2p->req_dev_types, req_dev_types,
1091 num_req_dev_types * WPS_DEV_TYPE_LEN);
1092 p2p->num_req_dev_types = num_req_dev_types;
1096 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1097 p2p->find_dev_id = p2p->find_dev_id_buf;
1099 p2p->find_dev_id = NULL;
1101 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1102 p2p_clear_timeout(p2p);
1103 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1104 p2p->find_type = type;
1105 p2p_device_clear_reported(p2p);
1106 p2p_set_state(p2p, P2P_SEARCH);
1107 p2p->search_delay = search_delay;
1108 p2p->in_search_delay = 0;
1109 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1110 p2p->last_p2p_find_timeout = timeout;
1112 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1115 case P2P_FIND_START_WITH_FULL:
1116 case P2P_FIND_PROGRESSIVE:
1117 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1118 p2p->num_req_dev_types,
1119 p2p->req_dev_types, dev_id,
1122 case P2P_FIND_ONLY_SOCIAL:
1123 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1124 p2p->num_req_dev_types,
1125 p2p->req_dev_types, dev_id,
1133 p2p_dbg(p2p, "Running p2p_scan");
1134 p2p->p2p_scan_running = 1;
1135 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1136 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1138 } else if (p2p->p2p_scan_running) {
1139 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1140 /* wait for the previous p2p_scan to complete */
1141 res = 0; /* do not report failure */
1143 p2p_dbg(p2p, "Failed to start p2p_scan");
1144 p2p_set_state(p2p, P2P_IDLE);
1145 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1152 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1154 p2p_dbg(p2p, "Stopping find");
1155 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1156 p2p_clear_timeout(p2p);
1157 if (p2p->state == P2P_SEARCH)
1158 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1159 p2p_set_state(p2p, P2P_IDLE);
1160 p2p_free_req_dev_types(p2p);
1161 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1162 if (p2p->go_neg_peer)
1163 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1164 p2p->go_neg_peer = NULL;
1165 p2p->sd_peer = NULL;
1166 p2p->invite_peer = NULL;
1167 p2p_stop_listen_for_freq(p2p, freq);
1171 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1173 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1174 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1177 if (p2p->in_listen) {
1179 p2p_clear_timeout(p2p);
1181 if (p2p->drv_in_listen) {
1183 * The driver may not deliver callback to p2p_listen_end()
1184 * when the operation gets canceled, so clear the internal
1185 * variable that is tracking driver state.
1187 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1188 p2p->drv_in_listen = 0;
1190 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1194 void p2p_stop_listen(struct p2p_data *p2p)
1196 if (p2p->state != P2P_LISTEN_ONLY) {
1197 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1201 p2p_stop_listen_for_freq(p2p, 0);
1202 p2p_set_state(p2p, P2P_IDLE);
1206 void p2p_stop_find(struct p2p_data *p2p)
1208 p2p->pending_listen_freq = 0;
1209 p2p_stop_find_for_freq(p2p, 0);
1213 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1214 unsigned int force_freq,
1215 unsigned int pref_freq, int go)
1217 u8 op_class, op_channel;
1218 unsigned int freq = force_freq ? force_freq : pref_freq;
1220 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1221 force_freq, pref_freq, go);
1222 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1223 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1227 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1228 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1230 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1231 freq, op_class, op_channel);
1235 p2p->op_reg_class = op_class;
1236 p2p->op_channel = op_channel;
1239 p2p->channels.reg_classes = 1;
1240 p2p->channels.reg_class[0].channels = 1;
1241 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1242 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1244 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1245 sizeof(struct p2p_channels));
1252 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1254 u8 op_class, op_channel;
1255 const int op_classes_5ghz[] = { 124, 115, 0 };
1256 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1257 const int op_classes_vht[] = { 128, 0 };
1259 p2p_dbg(p2p, "Prepare channel best");
1261 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1262 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1263 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1265 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1266 p2p->op_reg_class = op_class;
1267 p2p->op_channel = op_channel;
1268 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1269 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1270 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1272 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1273 p2p->op_reg_class = op_class;
1274 p2p->op_channel = op_channel;
1275 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1276 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1277 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1278 &op_channel) == 0) {
1279 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1280 p2p->op_reg_class = op_class;
1281 p2p->op_channel = op_channel;
1282 } else if (p2p->cfg->num_pref_chan > 0 &&
1283 p2p_channels_includes(&p2p->cfg->channels,
1284 p2p->cfg->pref_chan[0].op_class,
1285 p2p->cfg->pref_chan[0].chan)) {
1286 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1287 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1288 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1289 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1290 &p2p->op_reg_class, &p2p->op_channel) ==
1292 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1293 p2p->op_reg_class, p2p->op_channel);
1294 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1295 &p2p->op_reg_class, &p2p->op_channel) ==
1297 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1298 p2p->op_reg_class, p2p->op_channel);
1299 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1300 &p2p->op_reg_class, &p2p->op_channel) ==
1302 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1303 p2p->op_reg_class, p2p->op_channel);
1304 } else if (p2p_channels_includes(&p2p->cfg->channels,
1305 p2p->cfg->op_reg_class,
1306 p2p->cfg->op_channel)) {
1307 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1308 p2p->op_reg_class = p2p->cfg->op_reg_class;
1309 p2p->op_channel = p2p->cfg->op_channel;
1310 } else if (p2p_channel_random_social(&p2p->cfg->channels,
1312 &p2p->op_channel) == 0) {
1313 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1314 p2p->op_reg_class, p2p->op_channel);
1316 /* Select any random available channel from the first available
1317 * operating class */
1318 p2p_channel_select(&p2p->cfg->channels, NULL,
1321 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1322 p2p->op_channel, p2p->op_reg_class);
1325 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1326 sizeof(struct p2p_channels));
1331 * p2p_prepare_channel - Select operating channel for GO Negotiation
1332 * @p2p: P2P module context from p2p_init()
1333 * @dev: Selected peer device
1334 * @force_freq: Forced frequency in MHz or 0 if not forced
1335 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1336 * @go: Whether the local end will be forced to be GO
1337 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1339 * This function is used to do initial operating channel selection for GO
1340 * Negotiation prior to having received peer information. The selected channel
1341 * may be further optimized in p2p_reselect_channel() once the peer information
1344 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1345 unsigned int force_freq, unsigned int pref_freq, int go)
1347 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1348 force_freq, pref_freq, go);
1349 if (force_freq || pref_freq) {
1350 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1354 p2p_prepare_channel_best(p2p);
1356 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1358 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1359 else if (!force_freq)
1360 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1362 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1364 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1365 p2p->op_reg_class, p2p->op_channel,
1366 force_freq ? " (forced)" : "");
1369 dev->flags |= P2P_DEV_FORCE_FREQ;
1371 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1377 static void p2p_set_dev_persistent(struct p2p_device *dev,
1378 int persistent_group)
1380 switch (persistent_group) {
1382 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1383 P2P_DEV_PREFER_PERSISTENT_RECONN);
1386 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1387 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1390 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1391 P2P_DEV_PREFER_PERSISTENT_RECONN;
1397 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1398 enum p2p_wps_method wps_method,
1399 int go_intent, const u8 *own_interface_addr,
1400 unsigned int force_freq, int persistent_group,
1401 const u8 *force_ssid, size_t force_ssid_len,
1402 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1404 struct p2p_device *dev;
1406 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1407 " GO Intent=%d Intended Interface Address=" MACSTR
1408 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1410 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1411 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1413 dev = p2p_get_device(p2p, peer_addr);
1414 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1415 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1416 MAC2STR(peer_addr));
1420 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1421 go_intent == 15) < 0)
1424 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1425 if (!(dev->info.dev_capab &
1426 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1427 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1428 " that is in a group and is not discoverable",
1429 MAC2STR(peer_addr));
1432 if (dev->oper_freq <= 0) {
1433 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1434 " with incomplete information",
1435 MAC2STR(peer_addr));
1440 * First, try to connect directly. If the peer does not
1441 * acknowledge frames, assume it is sleeping and use device
1442 * discoverability via the GO at that point.
1448 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1449 force_ssid, force_ssid_len);
1450 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1451 p2p->ssid_len = force_ssid_len;
1455 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1456 dev->flags &= ~P2P_DEV_USER_REJECTED;
1457 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1458 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1459 if (pd_before_go_neg)
1460 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1462 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1464 * Assign dialog token and tie breaker here to use the same
1465 * values in each retry within the same GO Negotiation exchange.
1467 dev->dialog_token++;
1468 if (dev->dialog_token == 0)
1469 dev->dialog_token = 1;
1470 dev->tie_breaker = p2p->next_tie_breaker;
1471 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1473 dev->connect_reqs = 0;
1474 dev->go_neg_req_sent = 0;
1475 dev->go_state = UNKNOWN_GO;
1476 p2p_set_dev_persistent(dev, persistent_group);
1477 p2p->go_intent = go_intent;
1478 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1480 if (p2p->state != P2P_IDLE)
1483 if (p2p->after_scan_tx) {
1485 * We need to drop the pending frame to avoid issues with the
1486 * new GO Negotiation, e.g., when the pending frame was from a
1487 * previous attempt at starting a GO Negotiation.
1489 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1490 os_free(p2p->after_scan_tx);
1491 p2p->after_scan_tx = NULL;
1494 dev->wps_method = wps_method;
1495 dev->oob_pw_id = oob_pw_id;
1496 dev->status = P2P_SC_SUCCESS;
1498 if (p2p->p2p_scan_running) {
1499 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1500 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1501 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1504 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1506 return p2p_connect_send(p2p, dev);
1510 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1511 enum p2p_wps_method wps_method,
1512 int go_intent, const u8 *own_interface_addr,
1513 unsigned int force_freq, int persistent_group,
1514 const u8 *force_ssid, size_t force_ssid_len,
1515 unsigned int pref_freq, u16 oob_pw_id)
1517 struct p2p_device *dev;
1519 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1520 " GO Intent=%d Intended Interface Address=" MACSTR
1521 " wps_method=%d persistent_group=%d oob_pw_id=%u",
1522 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1523 wps_method, persistent_group, oob_pw_id);
1525 dev = p2p_get_device(p2p, peer_addr);
1527 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1528 MAC2STR(peer_addr));
1532 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1538 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1539 force_ssid, force_ssid_len);
1540 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1541 p2p->ssid_len = force_ssid_len;
1545 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1546 dev->flags &= ~P2P_DEV_USER_REJECTED;
1547 dev->go_neg_req_sent = 0;
1548 dev->go_state = UNKNOWN_GO;
1549 p2p_set_dev_persistent(dev, persistent_group);
1550 p2p->go_intent = go_intent;
1551 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1553 dev->wps_method = wps_method;
1554 dev->oob_pw_id = oob_pw_id;
1555 dev->status = P2P_SC_SUCCESS;
1561 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1562 struct p2p_device *dev, struct p2p_message *msg)
1564 os_get_reltime(&dev->last_seen);
1566 p2p_copy_wps_info(p2p, dev, 0, msg);
1568 if (msg->listen_channel) {
1570 freq = p2p_channel_to_freq(msg->listen_channel[3],
1571 msg->listen_channel[4]);
1573 p2p_dbg(p2p, "Unknown peer Listen channel: "
1574 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1575 msg->listen_channel[0],
1576 msg->listen_channel[1],
1577 msg->listen_channel[2],
1578 msg->listen_channel[3],
1579 msg->listen_channel[4]);
1581 p2p_dbg(p2p, "Update peer " MACSTR
1582 " Listen channel: %u -> %u MHz",
1583 MAC2STR(dev->info.p2p_device_addr),
1584 dev->listen_freq, freq);
1585 dev->listen_freq = freq;
1589 if (msg->wfd_subelems) {
1590 wpabuf_free(dev->info.wfd_subelems);
1591 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1594 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1595 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1596 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1598 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1599 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1601 MAC2STR(dev->info.p2p_device_addr),
1602 dev->info.dev_capab, dev->info.group_capab,
1603 dev->info.device_name, dev->listen_freq);
1606 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1608 if (dev->flags & P2P_DEV_USER_REJECTED) {
1609 p2p_dbg(p2p, "Do not report rejected device");
1613 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1614 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1615 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1619 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1621 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1622 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1623 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1624 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1625 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1629 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1631 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1632 p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1637 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1639 struct p2p_go_neg_results res;
1640 int go = peer->go_state == LOCAL_GO;
1641 struct p2p_channels intersection;
1645 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1646 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1648 os_memset(&res, 0, sizeof(res));
1650 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1651 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1652 res.wps_method = peer->wps_method;
1653 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1654 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1655 res.persistent_group = 2;
1657 res.persistent_group = 1;
1661 /* Setup AP mode for WPS provisioning */
1662 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1664 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1665 res.ssid_len = p2p->ssid_len;
1666 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1668 res.freq = peer->oper_freq;
1669 if (p2p->ssid_len) {
1670 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1671 res.ssid_len = p2p->ssid_len;
1675 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1676 p2p_channels_dump(p2p, "peer channels", &peer->channels);
1677 p2p_channels_intersect(&p2p->channels, &peer->channels,
1680 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1681 p2p_channels_dump(p2p, "intersection after no-GO removal",
1685 for (i = 0; i < intersection.reg_classes; i++) {
1686 struct p2p_reg_class *c = &intersection.reg_class[i];
1687 if (freqs + 1 == P2P_MAX_CHANNELS)
1689 for (j = 0; j < c->channels; j++) {
1691 if (freqs + 1 == P2P_MAX_CHANNELS)
1693 freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1696 res.freq_list[freqs++] = freq;
1700 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1702 p2p_clear_timeout(p2p);
1704 peer->go_neg_req_sent = 0;
1705 peer->wps_method = WPS_NOT_READY;
1706 peer->oob_pw_id = 0;
1707 wpabuf_free(peer->go_neg_conf);
1708 peer->go_neg_conf = NULL;
1710 p2p_set_state(p2p, P2P_PROVISIONING);
1711 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1715 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1716 const u8 *data, size_t len, int rx_freq)
1718 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1719 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1725 case P2P_GO_NEG_REQ:
1726 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1728 case P2P_GO_NEG_RESP:
1729 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1731 case P2P_GO_NEG_CONF:
1732 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1734 case P2P_INVITATION_REQ:
1735 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1738 case P2P_INVITATION_RESP:
1739 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
1740 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1742 case P2P_PROV_DISC_REQ:
1743 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1745 case P2P_PROV_DISC_RESP:
1746 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1748 case P2P_DEV_DISC_REQ:
1749 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1751 case P2P_DEV_DISC_RESP:
1752 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1755 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1762 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1763 const u8 *sa, const u8 *bssid, const u8 *data,
1764 size_t len, int freq)
1770 case WLAN_PA_VENDOR_SPECIFIC:
1775 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1781 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1783 case WLAN_PA_GAS_INITIAL_REQ:
1784 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1786 case WLAN_PA_GAS_INITIAL_RESP:
1787 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1789 case WLAN_PA_GAS_COMEBACK_REQ:
1790 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1792 case WLAN_PA_GAS_COMEBACK_RESP:
1793 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1799 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1800 const u8 *bssid, u8 category,
1801 const u8 *data, size_t len, int freq)
1803 if (category == WLAN_ACTION_PUBLIC) {
1804 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1808 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1814 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1819 /* P2P action frame */
1820 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1821 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1827 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1830 case P2P_PRESENCE_REQ:
1831 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1833 case P2P_PRESENCE_RESP:
1834 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1836 case P2P_GO_DISC_REQ:
1837 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1840 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1846 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1848 struct p2p_data *p2p = eloop_ctx;
1849 if (p2p->go_neg_peer == NULL)
1851 if (p2p->pending_listen_freq) {
1852 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1853 p2p->pending_listen_freq = 0;
1855 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1856 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1858 * Set new timeout to make sure a previously set one does not expire
1859 * too quickly while waiting for the GO Negotiation to complete.
1861 p2p_set_timeout(p2p, 0, 500000);
1862 p2p_connect_send(p2p, p2p->go_neg_peer);
1866 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1868 struct p2p_data *p2p = eloop_ctx;
1869 if (p2p->invite_peer == NULL)
1871 if (p2p->pending_listen_freq) {
1872 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1873 p2p->pending_listen_freq = 0;
1875 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1876 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1877 p2p->invite_dev_pw_id);
1881 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1882 const u8 *ie, size_t ie_len)
1884 struct p2p_message msg;
1885 struct p2p_device *dev;
1887 os_memset(&msg, 0, sizeof(msg));
1888 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1890 p2p_parse_free(&msg);
1891 return; /* not a P2P probe */
1894 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1895 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1897 /* The Probe Request is not part of P2P Device Discovery. It is
1898 * not known whether the source address of the frame is the P2P
1899 * Device Address or P2P Interface Address. Do not add a new
1900 * peer entry based on this frames.
1902 p2p_parse_free(&msg);
1906 dev = p2p_get_device(p2p, addr);
1908 if (dev->country[0] == 0 && msg.listen_channel)
1909 os_memcpy(dev->country, msg.listen_channel, 3);
1910 os_get_reltime(&dev->last_seen);
1911 p2p_parse_free(&msg);
1912 return; /* already known */
1915 dev = p2p_create_device(p2p, addr);
1917 p2p_parse_free(&msg);
1921 os_get_reltime(&dev->last_seen);
1922 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1924 if (msg.listen_channel) {
1925 os_memcpy(dev->country, msg.listen_channel, 3);
1926 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1927 msg.listen_channel[4]);
1930 p2p_copy_wps_info(p2p, dev, 1, &msg);
1932 if (msg.wfd_subelems) {
1933 wpabuf_free(dev->info.wfd_subelems);
1934 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1937 p2p_parse_free(&msg);
1939 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1940 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1941 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1942 dev->info.group_capab, dev->info.device_name,
1947 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1949 struct p2p_message *msg)
1951 struct p2p_device *dev;
1953 dev = p2p_get_device(p2p, addr);
1955 os_get_reltime(&dev->last_seen);
1956 return dev; /* already known */
1959 dev = p2p_create_device(p2p, addr);
1963 p2p_add_dev_info(p2p, addr, dev, msg);
1969 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1971 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1973 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1974 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1975 WPA_GET_BE16(&req_dev_type[6]) == 0)
1976 return 1; /* Category match with wildcard OUI/sub-category */
1981 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1982 size_t num_req_dev_type)
1985 for (i = 0; i < num_req_dev_type; i++) {
1986 if (dev_type_match(dev_type, req_dev_type[i]))
1994 * p2p_match_dev_type - Match local device type with requested type
1995 * @p2p: P2P module context from p2p_init()
1996 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1997 * Returns: 1 on match, 0 on mismatch
1999 * This function can be used to match the Requested Device Type attribute in
2000 * WPS IE with the local device types for deciding whether to reply to a Probe
2003 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2005 struct wps_parse_attr attr;
2008 if (wps_parse_msg(wps, &attr))
2009 return 1; /* assume no Requested Device Type attributes */
2011 if (attr.num_req_dev_type == 0)
2012 return 1; /* no Requested Device Type attributes -> match */
2014 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2015 attr.num_req_dev_type))
2016 return 1; /* Own Primary Device Type matches */
2018 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2019 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2021 attr.num_req_dev_type))
2022 return 1; /* Own Secondary Device Type matches */
2025 /* No matching device type found */
2030 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2037 #ifdef CONFIG_WIFI_DISPLAY
2038 if (p2p->wfd_ie_probe_resp)
2039 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2040 #endif /* CONFIG_WIFI_DISPLAY */
2042 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2043 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2045 buf = wpabuf_alloc(1000 + extra);
2049 if (p2p->go_neg_peer) {
2050 /* Advertise immediate availability of WPS credential */
2051 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2054 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2055 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2060 #ifdef CONFIG_WIFI_DISPLAY
2061 if (p2p->wfd_ie_probe_resp)
2062 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2063 #endif /* CONFIG_WIFI_DISPLAY */
2065 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2067 p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2070 len = p2p_buf_add_ie_hdr(buf);
2071 p2p_buf_add_capability(buf, p2p->dev_capab &
2072 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2073 if (p2p->ext_listen_interval)
2074 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2075 p2p->ext_listen_interval);
2076 p2p_buf_add_device_info(buf, p2p, NULL);
2077 p2p_buf_update_ie_hdr(buf, len);
2083 static enum p2p_probe_req_status
2084 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2085 const u8 *bssid, const u8 *ie, size_t ie_len)
2087 struct ieee802_11_elems elems;
2089 struct ieee80211_mgmt *resp;
2090 struct p2p_message msg;
2093 if (!p2p->in_listen || !p2p->drv_in_listen) {
2094 /* not in Listen state - ignore Probe Request */
2095 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2096 p2p->in_listen, p2p->drv_in_listen);
2097 return P2P_PREQ_NOT_LISTEN;
2100 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2102 /* Ignore invalid Probe Request frames */
2103 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2104 return P2P_PREQ_MALFORMED;
2107 if (elems.p2p == NULL) {
2108 /* not a P2P probe - ignore it */
2109 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2110 return P2P_PREQ_NOT_P2P;
2113 if (dst && !is_broadcast_ether_addr(dst) &&
2114 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2115 /* Not sent to the broadcast address or our P2P Device Address
2117 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2119 return P2P_PREQ_NOT_PROCESSED;
2122 if (bssid && !is_broadcast_ether_addr(bssid)) {
2123 /* Not sent to the Wildcard BSSID */
2124 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2126 return P2P_PREQ_NOT_PROCESSED;
2129 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2130 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2132 /* not using P2P Wildcard SSID - ignore */
2133 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2134 return P2P_PREQ_NOT_PROCESSED;
2137 if (supp_rates_11b_only(&elems)) {
2138 /* Indicates support for 11b rates only */
2139 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2140 return P2P_PREQ_NOT_P2P;
2143 os_memset(&msg, 0, sizeof(msg));
2144 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2145 /* Could not parse P2P attributes */
2146 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2147 return P2P_PREQ_NOT_P2P;
2150 if (msg.device_id &&
2151 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2152 /* Device ID did not match */
2153 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2154 MAC2STR(msg.device_id));
2155 p2p_parse_free(&msg);
2156 return P2P_PREQ_NOT_PROCESSED;
2159 /* Check Requested Device Type match */
2160 if (msg.wps_attributes &&
2161 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2162 /* No match with Requested Device Type */
2163 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2164 p2p_parse_free(&msg);
2165 return P2P_PREQ_NOT_PROCESSED;
2167 p2p_parse_free(&msg);
2169 if (!p2p->cfg->send_probe_resp) {
2170 /* Response generated elsewhere */
2171 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2172 return P2P_PREQ_NOT_PROCESSED;
2175 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2178 * We do not really have a specific BSS that this frame is advertising,
2179 * so build a frame that has some information in valid format. This is
2180 * really only used for discovery purposes, not to learn exact BSS
2183 ies = p2p_build_probe_resp_ies(p2p);
2185 return P2P_PREQ_NOT_PROCESSED;
2187 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2190 return P2P_PREQ_NOT_PROCESSED;
2194 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2196 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2197 (WLAN_FC_STYPE_PROBE_RESP << 4));
2198 os_memcpy(resp->da, addr, ETH_ALEN);
2199 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2200 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2201 resp->u.probe_resp.beacon_int = host_to_le16(100);
2202 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2203 resp->u.probe_resp.capab_info =
2204 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2205 WLAN_CAPABILITY_PRIVACY |
2206 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2208 wpabuf_put_u8(buf, WLAN_EID_SSID);
2209 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2210 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2212 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2213 wpabuf_put_u8(buf, 8);
2214 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2215 wpabuf_put_u8(buf, 90 / 5);
2216 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2217 wpabuf_put_u8(buf, 180 / 5);
2218 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2219 wpabuf_put_u8(buf, 360 / 5);
2220 wpabuf_put_u8(buf, 480 / 5);
2221 wpabuf_put_u8(buf, 540 / 5);
2223 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2224 wpabuf_put_u8(buf, 1);
2225 wpabuf_put_u8(buf, p2p->cfg->channel);
2227 wpabuf_put_buf(buf, ies);
2230 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2234 return P2P_PREQ_NOT_PROCESSED;
2238 enum p2p_probe_req_status
2239 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2240 const u8 *bssid, const u8 *ie, size_t ie_len)
2242 enum p2p_probe_req_status res;
2244 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2246 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2248 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2250 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2252 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2253 /* Received a Probe Request from GO Negotiation peer */
2254 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2255 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2256 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2257 return P2P_PREQ_PROCESSED;
2260 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2262 (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2263 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2265 /* Received a Probe Request from Invite peer */
2266 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2267 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2268 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2269 return P2P_PREQ_PROCESSED;
2276 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2277 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2286 return 0; /* WLAN AP is not a P2P manager */
2289 * (Re)Association Request - P2P IE
2290 * P2P Capability attribute (shall be present)
2291 * P2P Interface attribute (present if concurrent device and
2292 * P2P Management is enabled)
2294 tmp = wpabuf_alloc(200);
2298 lpos = p2p_buf_add_ie_hdr(tmp);
2300 if (p2p->num_groups > 0) {
2301 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2302 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2303 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2305 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2307 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2308 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2309 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2310 p2p_buf_add_p2p_interface(tmp, p2p);
2311 p2p_buf_update_ie_hdr(tmp, lpos);
2313 tmplen = wpabuf_len(tmp);
2317 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2326 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2327 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2331 struct p2p_device *peer;
2337 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2339 #ifdef CONFIG_WIFI_DISPLAY
2340 if (p2p->wfd_ie_assoc_req)
2341 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2342 #endif /* CONFIG_WIFI_DISPLAY */
2344 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2345 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2348 * (Re)Association Request - P2P IE
2349 * P2P Capability attribute (shall be present)
2350 * Extended Listen Timing (may be present)
2351 * P2P Device Info attribute (shall be present)
2353 tmp = wpabuf_alloc(200 + extra);
2357 #ifdef CONFIG_WIFI_DISPLAY
2358 if (p2p->wfd_ie_assoc_req)
2359 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2360 #endif /* CONFIG_WIFI_DISPLAY */
2362 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2364 p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2366 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2368 lpos = p2p_buf_add_ie_hdr(tmp);
2369 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2370 if (p2p->ext_listen_interval)
2371 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2372 p2p->ext_listen_interval);
2373 p2p_buf_add_device_info(tmp, p2p, peer);
2374 p2p_buf_update_ie_hdr(tmp, lpos);
2376 tmplen = wpabuf_len(tmp);
2380 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2389 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2391 struct wpabuf *p2p_ie;
2394 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2398 ret = p2p_attr_text(p2p_ie, buf, end);
2399 wpabuf_free(p2p_ie);
2404 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2406 struct p2p_message msg;
2408 os_memset(&msg, 0, sizeof(msg));
2409 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2412 if (msg.p2p_device_addr) {
2413 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2415 } else if (msg.device_id) {
2416 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2423 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2425 struct wpabuf *p2p_ie;
2428 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2429 P2P_IE_VENDOR_TYPE);
2432 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2433 wpabuf_free(p2p_ie);
2438 static void p2p_clear_go_neg(struct p2p_data *p2p)
2440 p2p->go_neg_peer = NULL;
2441 p2p_clear_timeout(p2p);
2442 p2p_set_state(p2p, P2P_IDLE);
2446 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2448 if (p2p->go_neg_peer == NULL) {
2449 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2450 return; /* No pending Group Formation */
2453 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2455 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2456 MACSTR " (GO Negotiation peer " MACSTR ")",
2458 MAC2STR(p2p->go_neg_peer->intended_addr));
2459 return; /* Ignore unexpected peer address */
2462 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2465 p2p_clear_go_neg(p2p);
2469 void p2p_group_formation_failed(struct p2p_data *p2p)
2471 if (p2p->go_neg_peer == NULL) {
2472 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2473 return; /* No pending Group Formation */
2476 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2477 MAC2STR(p2p->go_neg_peer->intended_addr));
2479 p2p_clear_go_neg(p2p);
2483 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2485 struct p2p_data *p2p;
2487 if (cfg->max_peers < 1 ||
2488 cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2491 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2494 p2p->cfg = (struct p2p_config *) (p2p + 1);
2495 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2497 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2498 if (cfg->manufacturer)
2499 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2500 if (cfg->model_name)
2501 p2p->cfg->model_name = os_strdup(cfg->model_name);
2502 if (cfg->model_number)
2503 p2p->cfg->model_number = os_strdup(cfg->model_number);
2504 if (cfg->serial_number)
2505 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2506 if (cfg->pref_chan) {
2507 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2508 sizeof(struct p2p_channel));
2509 if (p2p->cfg->pref_chan) {
2510 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2511 cfg->num_pref_chan *
2512 sizeof(struct p2p_channel));
2514 p2p->cfg->num_pref_chan = 0;
2517 p2p->min_disc_int = 1;
2518 p2p->max_disc_int = 3;
2519 p2p->max_disc_tu = -1;
2521 if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2522 p2p->next_tie_breaker = 0;
2523 p2p->next_tie_breaker &= 0x01;
2524 if (cfg->sd_request)
2525 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2526 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2527 if (cfg->concurrent_operations)
2528 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2529 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2531 dl_list_init(&p2p->devices);
2533 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2534 p2p_expiration_timeout, p2p, NULL);
2536 p2p->go_timeout = 100;
2537 p2p->client_timeout = 20;
2538 p2p->num_p2p_sd_queries = 0;
2540 p2p_dbg(p2p, "initialized");
2541 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2542 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2548 void p2p_deinit(struct p2p_data *p2p)
2550 #ifdef CONFIG_WIFI_DISPLAY
2551 wpabuf_free(p2p->wfd_ie_beacon);
2552 wpabuf_free(p2p->wfd_ie_probe_req);
2553 wpabuf_free(p2p->wfd_ie_probe_resp);
2554 wpabuf_free(p2p->wfd_ie_assoc_req);
2555 wpabuf_free(p2p->wfd_ie_invitation);
2556 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2557 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2558 wpabuf_free(p2p->wfd_ie_go_neg);
2559 wpabuf_free(p2p->wfd_dev_info);
2560 wpabuf_free(p2p->wfd_assoc_bssid);
2561 wpabuf_free(p2p->wfd_coupled_sink_info);
2562 #endif /* CONFIG_WIFI_DISPLAY */
2564 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2565 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2566 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2567 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2569 p2p_free_req_dev_types(p2p);
2570 os_free(p2p->cfg->dev_name);
2571 os_free(p2p->cfg->manufacturer);
2572 os_free(p2p->cfg->model_name);
2573 os_free(p2p->cfg->model_number);
2574 os_free(p2p->cfg->serial_number);
2575 os_free(p2p->cfg->pref_chan);
2576 os_free(p2p->groups);
2577 wpabuf_free(p2p->sd_resp);
2578 os_free(p2p->after_scan_tx);
2579 p2p_remove_wps_vendor_extensions(p2p);
2580 os_free(p2p->no_go_freq.range);
2585 void p2p_flush(struct p2p_data *p2p)
2587 struct p2p_device *dev, *prev;
2589 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2591 dl_list_del(&dev->list);
2592 p2p_device_free(p2p, dev);
2594 p2p_free_sd_queries(p2p);
2595 os_free(p2p->after_scan_tx);
2596 p2p->after_scan_tx = NULL;
2600 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2602 struct p2p_device *dev;
2604 dev = p2p_get_device(p2p, addr);
2608 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2610 if (p2p->go_neg_peer == dev)
2611 p2p->go_neg_peer = NULL;
2613 dev->wps_method = WPS_NOT_READY;
2615 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2616 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2618 /* Check if after_scan_tx is for this peer. If so free it */
2619 if (p2p->after_scan_tx &&
2620 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2621 os_free(p2p->after_scan_tx);
2622 p2p->after_scan_tx = NULL;
2629 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2631 os_free(p2p->cfg->dev_name);
2633 p2p->cfg->dev_name = os_strdup(dev_name);
2634 if (p2p->cfg->dev_name == NULL)
2637 p2p->cfg->dev_name = NULL;
2642 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2644 os_free(p2p->cfg->manufacturer);
2645 p2p->cfg->manufacturer = NULL;
2647 p2p->cfg->manufacturer = os_strdup(manufacturer);
2648 if (p2p->cfg->manufacturer == NULL)
2656 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2658 os_free(p2p->cfg->model_name);
2659 p2p->cfg->model_name = NULL;
2661 p2p->cfg->model_name = os_strdup(model_name);
2662 if (p2p->cfg->model_name == NULL)
2670 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2672 os_free(p2p->cfg->model_number);
2673 p2p->cfg->model_number = NULL;
2675 p2p->cfg->model_number = os_strdup(model_number);
2676 if (p2p->cfg->model_number == NULL)
2684 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2686 os_free(p2p->cfg->serial_number);
2687 p2p->cfg->serial_number = NULL;
2688 if (serial_number) {
2689 p2p->cfg->serial_number = os_strdup(serial_number);
2690 if (p2p->cfg->serial_number == NULL)
2698 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2700 p2p->cfg->config_methods = config_methods;
2704 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2706 os_memcpy(p2p->cfg->uuid, uuid, 16);
2710 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2712 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2717 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2718 size_t num_dev_types)
2720 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2721 num_dev_types = P2P_SEC_DEVICE_TYPES;
2722 p2p->cfg->num_sec_dev_types = num_dev_types;
2723 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2728 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2732 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2733 wpabuf_free(p2p->wps_vendor_ext[i]);
2734 p2p->wps_vendor_ext[i] = NULL;
2739 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2740 const struct wpabuf *vendor_ext)
2744 if (vendor_ext == NULL)
2747 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2748 if (p2p->wps_vendor_ext[i] == NULL)
2751 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2754 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2755 if (p2p->wps_vendor_ext[i] == NULL)
2762 int p2p_set_country(struct p2p_data *p2p, const char *country)
2764 os_memcpy(p2p->cfg->country, country, 3);
2769 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
2771 if (dev->sd_pending_bcast_queries == 0) {
2772 /* Initialize with total number of registered broadcast
2774 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
2777 if (p2p_start_sd(p2p, dev) == 0)
2780 if (dev->req_config_methods &&
2781 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2782 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2783 MACSTR " (config methods 0x%x)",
2784 MAC2STR(dev->info.p2p_device_addr),
2785 dev->req_config_methods);
2786 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2794 void p2p_continue_find(struct p2p_data *p2p)
2796 struct p2p_device *dev;
2799 p2p_set_state(p2p, P2P_SEARCH);
2801 /* Continue from the device following the last iteration */
2803 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2804 if (dev == p2p->last_p2p_find_oper) {
2810 if (p2p_pre_find_operation(p2p, dev) > 0) {
2811 p2p->last_p2p_find_oper = dev;
2817 * Wrap around to the beginning of the list and continue until the last
2820 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2821 if (p2p_pre_find_operation(p2p, dev) > 0) {
2822 p2p->last_p2p_find_oper = dev;
2825 if (dev == p2p->last_p2p_find_oper)
2829 p2p_listen_in_find(p2p, 1);
2833 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2835 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2837 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2841 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2842 p2p->sd_peer = NULL;
2843 p2p_continue_find(p2p);
2847 if (p2p->sd_peer == NULL) {
2848 p2p_dbg(p2p, "No SD peer entry known");
2849 p2p_continue_find(p2p);
2853 if (p2p->sd_query->for_all_peers) {
2854 /* Update the pending broadcast SD query count for this device
2856 p2p->sd_peer->sd_pending_bcast_queries--;
2859 * If there are no pending broadcast queries for this device,
2860 * mark it as done (-1).
2862 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
2863 p2p->sd_peer->sd_pending_bcast_queries = -1;
2866 /* Wait for response from the peer */
2867 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2868 p2p_set_timeout(p2p, 0, 200000);
2873 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2874 * @p2p: P2P module context from p2p_init()
2876 static void p2p_retry_pd(struct p2p_data *p2p)
2878 struct p2p_device *dev;
2880 if (p2p->state != P2P_IDLE)
2884 * Retry the prov disc req attempt only for the peer that the user had
2888 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2889 if (os_memcmp(p2p->pending_pd_devaddr,
2890 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2892 if (!dev->req_config_methods)
2895 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2896 MACSTR " (config methods 0x%x)",
2897 MAC2STR(dev->info.p2p_device_addr),
2898 dev->req_config_methods);
2899 p2p_send_prov_disc_req(p2p, dev,
2900 dev->flags & P2P_DEV_PD_FOR_JOIN,
2901 p2p->pd_force_freq);
2907 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2909 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2913 * Postpone resetting the pending action state till after we actually
2914 * time out. This allows us to take some action like notifying any
2915 * interested parties about no response to the request.
2917 * When the timer (below) goes off we check in IDLE, SEARCH, or
2918 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2919 * requests in, if this was still pending and then raise notification.
2923 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2925 if (p2p->user_initiated_pd &&
2926 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2928 /* Retry request from timeout to avoid busy loops */
2929 p2p->pending_action_state = P2P_PENDING_PD;
2930 p2p_set_timeout(p2p, 0, 50000);
2931 } else if (p2p->state != P2P_IDLE)
2932 p2p_continue_find(p2p);
2933 else if (p2p->user_initiated_pd) {
2934 p2p->pending_action_state = P2P_PENDING_PD;
2935 p2p_set_timeout(p2p, 0, 300000);
2941 * This postponing, of resetting pending_action_state, needs to be
2942 * done only for user initiated PD requests and not internal ones.
2944 if (p2p->user_initiated_pd)
2945 p2p->pending_action_state = P2P_PENDING_PD;
2947 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2949 /* Wait for response from the peer */
2950 if (p2p->state == P2P_SEARCH)
2951 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2952 p2p_set_timeout(p2p, 0, 200000);
2956 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2957 struct os_reltime *rx_time, int level, const u8 *ies,
2960 if (os_reltime_before(rx_time, &p2p->find_start)) {
2962 * The driver may have cached (e.g., in cfg80211 BSS table) the
2963 * scan results for relatively long time. To avoid reporting
2964 * stale information, update P2P peers only based on results
2965 * that have based on frames received after the last p2p_find
2966 * operation was started.
2968 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2969 " (rx_time=%u.%06u)",
2970 MAC2STR(bssid), (unsigned int) rx_time->sec,
2971 (unsigned int) rx_time->usec);
2975 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2981 void p2p_scan_res_handled(struct p2p_data *p2p)
2983 if (!p2p->p2p_scan_running) {
2984 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2986 p2p->p2p_scan_running = 0;
2987 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2989 if (p2p_run_after_scan(p2p))
2991 if (p2p->state == P2P_SEARCH)
2992 p2p_continue_find(p2p);
2996 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3000 #ifdef CONFIG_WIFI_DISPLAY
3001 if (p2p->wfd_ie_probe_req)
3002 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3003 #endif /* CONFIG_WIFI_DISPLAY */
3005 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3007 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3009 len = p2p_buf_add_ie_hdr(ies);
3010 p2p_buf_add_capability(ies, p2p->dev_capab &
3011 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
3013 p2p_buf_add_device_id(ies, dev_id);
3014 if (p2p->cfg->reg_class && p2p->cfg->channel)
3015 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3016 p2p->cfg->reg_class,
3018 if (p2p->ext_listen_interval)
3019 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3020 p2p->ext_listen_interval);
3021 /* TODO: p2p_buf_add_operating_channel() if GO */
3022 p2p_buf_update_ie_hdr(ies, len);
3026 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3030 #ifdef CONFIG_WIFI_DISPLAY
3031 if (p2p && p2p->wfd_ie_probe_req)
3032 len += wpabuf_len(p2p->wfd_ie_probe_req);
3033 #endif /* CONFIG_WIFI_DISPLAY */
3035 if (p2p && p2p->vendor_elem &&
3036 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3037 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3043 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3045 return p2p_attr_text(p2p_ie, buf, end);
3049 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3051 struct p2p_device *dev = p2p->go_neg_peer;
3054 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3057 p2p_dbg(p2p, "No pending GO Negotiation");
3062 if (dev->flags & P2P_DEV_USER_REJECTED) {
3063 p2p_set_state(p2p, P2P_IDLE);
3066 } else if (dev->go_neg_req_sent) {
3067 /* Cancel the increment from p2p_connect_send() on failure */
3068 dev->go_neg_req_sent--;
3072 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3073 !is_zero_ether_addr(dev->member_in_go_dev)) {
3074 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3075 MAC2STR(dev->info.p2p_device_addr));
3076 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3077 p2p_send_dev_disc_req(p2p, dev);
3082 * Use P2P find, if needed, to find the other device from its listen
3085 p2p_set_state(p2p, P2P_CONNECT);
3086 timeout = success ? 500000 : 100000;
3087 if (!success && p2p->go_neg_peer &&
3088 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3091 * Peer is expected to wait our response and we will skip the
3092 * listen phase. Add some randomness to the wait time here to
3093 * make it less likely to hit cases where we could end up in
3094 * sync with peer not listening.
3096 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3098 timeout += r % 100000;
3100 p2p_set_timeout(p2p, 0, timeout);
3104 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3106 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3108 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3109 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3112 p2p_set_state(p2p, P2P_CONNECT);
3113 p2p_set_timeout(p2p, 0, 500000);
3117 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3120 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3121 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3122 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
3123 p2p->go_neg_peer->status);
3124 } else if (success) {
3125 struct p2p_device *dev;
3126 dev = p2p_get_device(p2p, addr);
3128 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3129 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3134 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3135 enum p2p_send_action_result result)
3137 struct p2p_device *dev;
3139 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3140 if (result == P2P_SEND_ACTION_FAILED) {
3141 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3142 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3146 dev = p2p->go_neg_peer;
3148 if (result == P2P_SEND_ACTION_NO_ACK) {
3150 * Retry GO Negotiation Confirmation
3151 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3152 * ACK for confirmation.
3154 if (dev && dev->go_neg_conf &&
3155 dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3156 p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3157 dev->go_neg_conf_sent);
3158 p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3159 if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3160 dev->info.p2p_device_addr,
3162 dev->info.p2p_device_addr,
3163 wpabuf_head(dev->go_neg_conf),
3164 wpabuf_len(dev->go_neg_conf), 0) >=
3166 dev->go_neg_conf_sent++;
3169 p2p_dbg(p2p, "Failed to re-send Action frame");
3172 * Continue with the assumption that the first attempt
3173 * went through and just the ACK frame was lost.
3178 * It looks like the TX status for GO Negotiation Confirm is
3179 * often showing failure even when the peer has actually
3180 * received the frame. Since the peer may change channels
3181 * immediately after having received the frame, we may not see
3182 * an Ack for retries, so just dropping a single frame may
3183 * trigger this. To allow the group formation to succeed if the
3184 * peer did indeed receive the frame, continue regardless of
3187 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3190 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3195 p2p_go_complete(p2p, dev);
3199 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3200 const u8 *src, const u8 *bssid,
3201 enum p2p_send_action_result result)
3203 enum p2p_pending_action_state state;
3206 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3207 " src=" MACSTR " bssid=" MACSTR " result=%d",
3208 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3209 MAC2STR(bssid), result);
3210 success = result == P2P_SEND_ACTION_SUCCESS;
3211 state = p2p->pending_action_state;
3212 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3214 case P2P_NO_PENDING_ACTION:
3215 if (p2p->send_action_in_progress) {
3216 p2p->send_action_in_progress = 0;
3217 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3219 if (p2p->after_scan_tx_in_progress) {
3220 p2p->after_scan_tx_in_progress = 0;
3221 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3222 p2p_run_after_scan(p2p))
3224 if (p2p->state == P2P_SEARCH) {
3225 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3226 p2p_continue_find(p2p);
3230 case P2P_PENDING_GO_NEG_REQUEST:
3231 p2p_go_neg_req_cb(p2p, success);
3233 case P2P_PENDING_GO_NEG_RESPONSE:
3234 p2p_go_neg_resp_cb(p2p, success);
3236 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3237 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3239 case P2P_PENDING_GO_NEG_CONFIRM:
3240 p2p_go_neg_conf_cb(p2p, result);
3242 case P2P_PENDING_SD:
3243 p2p_sd_cb(p2p, success);
3245 case P2P_PENDING_PD:
3246 p2p_prov_disc_cb(p2p, success);
3248 case P2P_PENDING_INVITATION_REQUEST:
3249 p2p_invitation_req_cb(p2p, success);
3251 case P2P_PENDING_INVITATION_RESPONSE:
3252 p2p_invitation_resp_cb(p2p, success);
3254 case P2P_PENDING_DEV_DISC_REQUEST:
3255 p2p_dev_disc_req_cb(p2p, success);
3257 case P2P_PENDING_DEV_DISC_RESPONSE:
3258 p2p_dev_disc_resp_cb(p2p, success);
3260 case P2P_PENDING_GO_DISC_REQ:
3261 p2p_go_disc_req_cb(p2p, success);
3265 p2p->after_scan_tx_in_progress = 0;
3269 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3270 unsigned int duration)
3272 if (freq == p2p->pending_client_disc_freq) {
3273 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3274 p2p->pending_client_disc_freq = 0;
3278 if (freq != p2p->pending_listen_freq) {
3279 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3280 freq, duration, p2p->pending_listen_freq);
3284 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3285 p2p->pending_listen_sec, p2p->pending_listen_usec,
3286 p2p->pending_listen_freq);
3288 p2p->drv_in_listen = freq;
3289 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3291 * Add 20 msec extra wait to avoid race condition with driver
3292 * remain-on-channel end event, i.e., give driver more time to
3293 * complete the operation before our timeout expires.
3295 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3296 p2p->pending_listen_usec + 20000);
3299 p2p->pending_listen_freq = 0;
3303 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3305 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3306 p2p->drv_in_listen = 0;
3308 return 0; /* Internal timeout will trigger the next step */
3310 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3311 if (p2p->go_neg_peer->connect_reqs >= 120) {
3312 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3313 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3317 p2p_set_state(p2p, P2P_CONNECT);
3318 p2p_connect_send(p2p, p2p->go_neg_peer);
3320 } else if (p2p->state == P2P_SEARCH) {
3321 if (p2p->p2p_scan_running) {
3323 * Search is already in progress. This can happen if
3324 * an Action frame RX is reported immediately after
3325 * the end of a remain-on-channel operation and the
3326 * response frame to that is sent using an offchannel
3327 * operation while in p2p_find. Avoid an attempt to
3328 * restart a scan here.
3330 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3333 if (p2p->pending_listen_freq) {
3335 * Better wait a bit if the driver is unable to start
3336 * offchannel operation for some reason. p2p_search()
3337 * will be started from internal timeout.
3339 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3340 p2p_set_timeout(p2p, 0, 100000);
3343 if (p2p->search_delay) {
3344 p2p_dbg(p2p, "Delay search operation by %u ms",
3346 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3347 (p2p->search_delay % 1000) * 1000);
3358 static void p2p_timeout_connect(struct p2p_data *p2p)
3360 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3361 if (p2p->go_neg_peer &&
3362 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3363 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3364 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3367 if (p2p->go_neg_peer &&
3368 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3369 p2p->go_neg_peer->connect_reqs < 120) {
3370 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3371 p2p_connect_send(p2p, p2p->go_neg_peer);
3374 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3375 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3376 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3377 p2p_set_timeout(p2p, 0, 30000);
3380 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3381 p2p_listen_in_find(p2p, 0);
3385 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3387 if (p2p->go_neg_peer) {
3388 if (p2p->drv_in_listen) {
3389 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3393 if (p2p->go_neg_peer->connect_reqs >= 120) {
3394 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3395 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3399 p2p_set_state(p2p, P2P_CONNECT);
3400 p2p_connect_send(p2p, p2p->go_neg_peer);
3402 p2p_set_state(p2p, P2P_IDLE);
3406 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3408 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3410 if (p2p->cfg->is_concurrent_session_active &&
3411 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3412 p2p_set_timeout(p2p, 0, 500000);
3414 p2p_set_timeout(p2p, 0, 200000);
3418 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3420 struct p2p_device *dev = p2p->go_neg_peer;
3421 struct os_reltime now;
3424 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3428 os_get_reltime(&now);
3429 if (os_reltime_expired(&now, &dev->go_neg_wait_started, 120)) {
3430 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3431 p2p_go_neg_failed(p2p, dev, -1);
3435 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3436 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3437 p2p_listen_in_find(p2p, 0);
3441 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3443 p2p_dbg(p2p, "Service Discovery Query timeout");
3445 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3446 p2p->sd_peer = NULL;
3448 p2p_continue_find(p2p);
3452 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3454 p2p_dbg(p2p, "Provision Discovery Request timeout");
3455 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3456 p2p_continue_find(p2p);
3460 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3462 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3465 * For user initiated PD requests that we have not gotten any responses
3466 * for while in IDLE state, we retry them a couple of times before
3469 if (!p2p->user_initiated_pd)
3472 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3474 if (p2p->pd_retries) {
3478 struct p2p_device *dev;
3481 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3482 if (os_memcmp(p2p->pending_pd_devaddr,
3483 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3485 if (dev->req_config_methods &&
3486 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3490 if (p2p->cfg->prov_disc_fail)
3491 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3492 p2p->pending_pd_devaddr,
3494 P2P_PROV_DISC_TIMEOUT_JOIN :
3495 P2P_PROV_DISC_TIMEOUT);
3496 p2p_reset_pending_pd(p2p);
3501 static void p2p_timeout_invite(struct p2p_data *p2p)
3503 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3504 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3505 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3507 * Better remain on operating channel instead of listen channel
3508 * when running a group.
3510 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3511 p2p_set_timeout(p2p, 0, 100000);
3514 p2p_listen_in_find(p2p, 0);
3518 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3520 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3521 p2p_set_state(p2p, P2P_INVITE);
3522 p2p_invite_send(p2p, p2p->invite_peer,
3523 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3525 if (p2p->invite_peer) {
3526 p2p_dbg(p2p, "Invitation Request retry limit reached");
3527 if (p2p->cfg->invitation_result)
3528 p2p->cfg->invitation_result(
3529 p2p->cfg->cb_ctx, -1, NULL, NULL,
3530 p2p->invite_peer->info.p2p_device_addr,
3533 p2p_set_state(p2p, P2P_IDLE);
3538 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3540 struct p2p_data *p2p = eloop_ctx;
3542 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3545 if (p2p->drv_in_listen) {
3546 p2p_dbg(p2p, "Driver is still in listen state - stop it");
3547 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
3550 switch (p2p->state) {
3552 /* Check if we timed out waiting for PD req */
3553 if (p2p->pending_action_state == P2P_PENDING_PD)
3554 p2p_timeout_prov_disc_req(p2p);
3557 /* Check if we timed out waiting for PD req */
3558 if (p2p->pending_action_state == P2P_PENDING_PD)
3559 p2p_timeout_prov_disc_req(p2p);
3560 if (p2p->search_delay && !p2p->in_search_delay) {
3561 p2p_dbg(p2p, "Delay search operation by %u ms",
3563 p2p->in_search_delay = 1;
3564 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3565 (p2p->search_delay % 1000) * 1000);
3568 p2p->in_search_delay = 0;
3572 p2p_timeout_connect(p2p);
3574 case P2P_CONNECT_LISTEN:
3575 p2p_timeout_connect_listen(p2p);
3579 case P2P_LISTEN_ONLY:
3580 /* Check if we timed out waiting for PD req */
3581 if (p2p->pending_action_state == P2P_PENDING_PD)
3582 p2p_timeout_prov_disc_req(p2p);
3584 if (p2p->ext_listen_only) {
3585 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3586 p2p->ext_listen_only = 0;
3587 p2p_set_state(p2p, P2P_IDLE);
3590 case P2P_WAIT_PEER_CONNECT:
3591 p2p_timeout_wait_peer_connect(p2p);
3593 case P2P_WAIT_PEER_IDLE:
3594 p2p_timeout_wait_peer_idle(p2p);
3596 case P2P_SD_DURING_FIND:
3597 p2p_timeout_sd_during_find(p2p);
3599 case P2P_PROVISIONING:
3601 case P2P_PD_DURING_FIND:
3602 p2p_timeout_prov_disc_during_find(p2p);
3605 p2p_timeout_invite(p2p);
3607 case P2P_INVITE_LISTEN:
3608 p2p_timeout_invite_listen(p2p);
3614 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3616 struct p2p_device *dev;
3618 dev = p2p_get_device(p2p, peer_addr);
3619 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3620 MACSTR, MAC2STR(peer_addr));
3622 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3625 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3626 dev->flags |= P2P_DEV_USER_REJECTED;
3631 const char * p2p_wps_method_text(enum p2p_wps_method method)
3636 case WPS_PIN_DISPLAY:
3638 case WPS_PIN_KEYPAD:
3650 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3665 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3666 const u8 *addr, int next)
3668 struct p2p_device *dev;
3671 dev = p2p_get_device(p2p, addr);
3673 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3676 dev = dl_list_first(&dev->list, struct p2p_device, list);
3677 if (&dev->list == &p2p->devices)
3688 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3689 char *buf, size_t buflen)
3691 struct p2p_device *dev;
3694 struct os_reltime now;
3699 dev = (struct p2p_device *) (((u8 *) info) -
3700 offsetof(struct p2p_device, info));
3705 os_get_reltime(&now);
3706 res = os_snprintf(pos, end - pos,
3710 "interface_addr=" MACSTR "\n"
3711 "member_in_go_dev=" MACSTR "\n"
3712 "member_in_go_iface=" MACSTR "\n"
3713 "go_neg_req_sent=%d\n"
3716 "intended_addr=" MACSTR "\n"
3719 "req_config_methods=0x%x\n"
3720 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3722 "invitation_reqs=%u\n",
3723 (int) (now.sec - dev->last_seen.sec),
3725 p2p_wps_method_text(dev->wps_method),
3726 MAC2STR(dev->interface_addr),
3727 MAC2STR(dev->member_in_go_dev),
3728 MAC2STR(dev->member_in_go_iface),
3729 dev->go_neg_req_sent,
3730 p2p_go_state_text(dev->go_state),
3732 MAC2STR(dev->intended_addr),
3733 dev->country[0] ? dev->country[0] : '_',
3734 dev->country[1] ? dev->country[1] : '_',
3736 dev->req_config_methods,
3737 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3738 "[PROBE_REQ_ONLY]" : "",
3739 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3740 dev->flags & P2P_DEV_NOT_YET_READY ?
3741 "[NOT_YET_READY]" : "",
3742 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3743 "[PD_PEER_DISPLAY]" : "",
3744 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3745 "[PD_PEER_KEYPAD]" : "",
3746 dev->flags & P2P_DEV_USER_REJECTED ?
3747 "[USER_REJECTED]" : "",
3748 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3749 "[PEER_WAITING_RESPONSE]" : "",
3750 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3751 "[PREFER_PERSISTENT_GROUP]" : "",
3752 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3753 "[WAIT_GO_NEG_RESPONSE]" : "",
3754 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3755 "[WAIT_GO_NEG_CONFIRM]" : "",
3756 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3757 "[GROUP_CLIENT_ONLY]" : "",
3758 dev->flags & P2P_DEV_FORCE_FREQ ?
3759 "[FORCE_FREQ]" : "",
3760 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3761 "[PD_FOR_JOIN]" : "",
3763 dev->invitation_reqs);
3764 if (res < 0 || res >= end - pos)
3768 if (dev->ext_listen_period) {
3769 res = os_snprintf(pos, end - pos,
3770 "ext_listen_period=%u\n"
3771 "ext_listen_interval=%u\n",
3772 dev->ext_listen_period,
3773 dev->ext_listen_interval);
3774 if (res < 0 || res >= end - pos)
3779 if (dev->oper_ssid_len) {
3780 res = os_snprintf(pos, end - pos,
3782 wpa_ssid_txt(dev->oper_ssid,
3783 dev->oper_ssid_len));
3784 if (res < 0 || res >= end - pos)
3789 #ifdef CONFIG_WIFI_DISPLAY
3790 if (dev->info.wfd_subelems) {
3791 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3792 if (res < 0 || res >= end - pos)
3796 pos += wpa_snprintf_hex(pos, end - pos,
3797 wpabuf_head(dev->info.wfd_subelems),
3798 wpabuf_len(dev->info.wfd_subelems));
3800 res = os_snprintf(pos, end - pos, "\n");
3801 if (res < 0 || res >= end - pos)
3805 #endif /* CONFIG_WIFI_DISPLAY */
3811 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3813 return p2p_get_device(p2p, addr) != NULL;
3817 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3820 p2p_dbg(p2p, "Client discoverability enabled");
3821 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3823 p2p_dbg(p2p, "Client discoverability disabled");
3824 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3829 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3830 u32 duration2, u32 interval2)
3833 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3836 req = wpabuf_alloc(100);
3840 if (duration1 || interval1) {
3841 os_memset(&desc1, 0, sizeof(desc1));
3842 desc1.count_type = 1;
3843 desc1.duration = duration1;
3844 desc1.interval = interval1;
3847 if (duration2 || interval2) {
3848 os_memset(&desc2, 0, sizeof(desc2));
3849 desc2.count_type = 2;
3850 desc2.duration = duration2;
3851 desc2.interval = interval2;
3856 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3857 len = p2p_buf_add_ie_hdr(req);
3858 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3859 p2p_buf_update_ie_hdr(req, len);
3865 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3866 const u8 *own_interface_addr, unsigned int freq,
3867 u32 duration1, u32 interval1, u32 duration2,
3872 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3873 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3875 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3876 freq, duration1, interval1, duration2, interval2);
3878 req = p2p_build_presence_req(duration1, interval1, duration2,
3883 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3884 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3886 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3887 p2p_dbg(p2p, "Failed to send Action frame");
3895 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3896 size_t noa_len, u8 dialog_token)
3898 struct wpabuf *resp;
3901 resp = wpabuf_alloc(100 + noa_len);
3905 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3906 len = p2p_buf_add_ie_hdr(resp);
3907 p2p_buf_add_status(resp, status);
3909 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3910 wpabuf_put_le16(resp, noa_len);
3911 wpabuf_put_data(resp, noa, noa_len);
3913 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3914 p2p_buf_update_ie_hdr(resp, len);
3920 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3921 const u8 *sa, const u8 *data, size_t len,
3924 struct p2p_message msg;
3926 struct wpabuf *resp;
3928 struct p2p_group *group = NULL;
3933 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3935 for (g = 0; g < p2p->num_groups; g++) {
3936 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3938 group = p2p->groups[g];
3942 if (group == NULL) {
3943 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3944 MACSTR, MAC2STR(da));
3948 if (p2p_parse(data, len, &msg) < 0) {
3949 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3950 status = P2P_SC_FAIL_INVALID_PARAMS;
3955 if (msg.noa == NULL) {
3956 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3957 status = P2P_SC_FAIL_INVALID_PARAMS;
3961 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3964 if (p2p->cfg->get_noa)
3965 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3969 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3970 noa_len > 0 ? noa_len : 0,
3973 p2p_parse_free(&msg);
3977 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3978 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3979 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3980 p2p_dbg(p2p, "Failed to send Action frame");
3986 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3987 const u8 *sa, const u8 *data, size_t len)
3989 struct p2p_message msg;
3991 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3993 if (p2p_parse(data, len, &msg) < 0) {
3994 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3998 if (msg.status == NULL || msg.noa == NULL) {
3999 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4000 p2p_parse_free(&msg);
4004 if (p2p->cfg->presence_resp) {
4005 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4006 msg.noa, msg.noa_len);
4010 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4012 p2p_parse_free(&msg);
4016 p2p_dbg(p2p, "P2P Presence Request was accepted");
4017 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4018 msg.noa, msg.noa_len);
4019 /* TODO: process NoA */
4020 p2p_parse_free(&msg);
4024 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4026 struct p2p_data *p2p = eloop_ctx;
4028 if (p2p->ext_listen_interval) {
4029 /* Schedule next extended listen timeout */
4030 eloop_register_timeout(p2p->ext_listen_interval_sec,
4031 p2p->ext_listen_interval_usec,
4032 p2p_ext_listen_timeout, p2p, NULL);
4035 if ((p2p->cfg->is_p2p_in_progress &&
4036 p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4037 (p2p->pending_action_state == P2P_PENDING_PD &&
4038 p2p->pd_retries > 0)) {
4039 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4040 p2p_state_txt(p2p->state));
4044 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4046 * This should not really happen, but it looks like the Listen
4047 * command may fail is something else (e.g., a scan) was
4048 * running at an inconvenient time. As a workaround, allow new
4049 * Extended Listen operation to be started.
4051 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4052 p2p->ext_listen_only = 0;
4053 p2p_set_state(p2p, P2P_IDLE);
4056 if (p2p->state != P2P_IDLE) {
4057 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4061 p2p_dbg(p2p, "Extended Listen timeout");
4062 p2p->ext_listen_only = 1;
4063 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4064 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4065 p2p->ext_listen_only = 0;
4070 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4071 unsigned int interval)
4073 if (period > 65535 || interval > 65535 || period > interval ||
4074 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4075 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4080 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4082 if (interval == 0) {
4083 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4084 p2p->ext_listen_period = 0;
4085 p2p->ext_listen_interval = 0;
4089 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4091 p2p->ext_listen_period = period;
4092 p2p->ext_listen_interval = interval;
4093 p2p->ext_listen_interval_sec = interval / 1000;
4094 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4096 eloop_register_timeout(p2p->ext_listen_interval_sec,
4097 p2p->ext_listen_interval_usec,
4098 p2p_ext_listen_timeout, p2p, NULL);
4104 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4105 const u8 *ie, size_t ie_len)
4107 struct p2p_message msg;
4109 if (bssid == NULL || ie == NULL)
4112 os_memset(&msg, 0, sizeof(msg));
4113 if (p2p_parse_ies(ie, ie_len, &msg))
4115 if (msg.minor_reason_code == NULL) {
4116 p2p_parse_free(&msg);
4120 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4121 " reason_code=%u minor_reason_code=%u",
4122 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4124 p2p_parse_free(&msg);
4128 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4129 const u8 *ie, size_t ie_len)
4131 struct p2p_message msg;
4133 if (bssid == NULL || ie == NULL)
4136 os_memset(&msg, 0, sizeof(msg));
4137 if (p2p_parse_ies(ie, ie_len, &msg))
4139 if (msg.minor_reason_code == NULL) {
4140 p2p_parse_free(&msg);
4144 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4145 " reason_code=%u minor_reason_code=%u",
4146 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4148 p2p_parse_free(&msg);
4152 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4155 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4156 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4158 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4159 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4164 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4167 return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4171 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4174 if (p2p_channel_to_freq(reg_class, channel) < 0)
4177 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4178 reg_class, channel);
4181 * Listen channel was set in configuration or set by control interface;
4182 * cannot override it.
4184 if (p2p->cfg->channel_forced && forced == 0)
4187 if (p2p->state == P2P_IDLE) {
4188 p2p->cfg->reg_class = reg_class;
4189 p2p->cfg->channel = channel;
4190 p2p->cfg->channel_forced = forced;
4192 p2p_dbg(p2p, "Defer setting listen channel");
4193 p2p->pending_reg_class = reg_class;
4194 p2p->pending_channel = channel;
4195 p2p->pending_channel_forced = forced;
4202 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4204 return p2p->cfg->channel;
4208 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4210 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4211 if (postfix == NULL) {
4212 p2p->cfg->ssid_postfix_len = 0;
4215 if (len > sizeof(p2p->cfg->ssid_postfix))
4217 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4218 p2p->cfg->ssid_postfix_len = len;
4223 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4226 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4229 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4230 op_reg_class, op_channel);
4231 p2p->cfg->op_reg_class = op_reg_class;
4232 p2p->cfg->op_channel = op_channel;
4233 p2p->cfg->cfg_op_channel = cfg_op_channel;
4238 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4239 const struct p2p_channel *pref_chan)
4241 struct p2p_channel *n;
4244 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4247 os_memcpy(n, pref_chan,
4248 num_pref_chan * sizeof(struct p2p_channel));
4252 os_free(p2p->cfg->pref_chan);
4253 p2p->cfg->pref_chan = n;
4254 p2p->cfg->num_pref_chan = num_pref_chan;
4260 int p2p_set_no_go_freq(struct p2p_data *p2p,
4261 const struct wpa_freq_range_list *list)
4263 struct wpa_freq_range *tmp;
4265 if (list == NULL || list->num == 0) {
4266 os_free(p2p->no_go_freq.range);
4267 p2p->no_go_freq.range = NULL;
4268 p2p->no_go_freq.num = 0;
4272 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4275 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4276 os_free(p2p->no_go_freq.range);
4277 p2p->no_go_freq.range = tmp;
4278 p2p->no_go_freq.num = list->num;
4279 p2p_dbg(p2p, "Updated no GO chan list");
4285 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4288 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4289 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4291 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4296 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4299 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4302 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4307 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4309 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4310 if (is_zero_ether_addr(p2p->peer_filter))
4311 p2p_dbg(p2p, "Disable peer filter");
4313 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4314 MAC2STR(p2p->peer_filter));
4318 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4320 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4321 if (p2p->cross_connect == enabled)
4323 p2p->cross_connect = enabled;
4324 /* TODO: may need to tear down any action group where we are GO(?) */
4328 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4330 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4333 if (dev->oper_freq <= 0)
4335 return dev->oper_freq;
4339 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4341 p2p_dbg(p2p, "Intra BSS distribution %s",
4342 enabled ? "enabled" : "disabled");
4343 p2p->cfg->p2p_intra_bss = enabled;
4347 void p2p_update_channel_list(struct p2p_data *p2p,
4348 const struct p2p_channels *chan,
4349 const struct p2p_channels *cli_chan)
4351 p2p_dbg(p2p, "Update channel list");
4352 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4353 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4354 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4355 sizeof(struct p2p_channels));
4356 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4360 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4361 const u8 *src, const u8 *bssid, const u8 *buf,
4362 size_t len, unsigned int wait_time)
4364 if (p2p->p2p_scan_running) {
4365 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4366 if (p2p->after_scan_tx) {
4367 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4368 os_free(p2p->after_scan_tx);
4370 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4372 if (p2p->after_scan_tx == NULL)
4374 p2p->after_scan_tx->freq = freq;
4375 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4376 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4377 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4378 p2p->after_scan_tx->len = len;
4379 p2p->after_scan_tx->wait_time = wait_time;
4380 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4384 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4385 buf, len, wait_time);
4389 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4392 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4393 freq_24, freq_5, freq_overall);
4394 p2p->best_freq_24 = freq_24;
4395 p2p->best_freq_5 = freq_5;
4396 p2p->best_freq_overall = freq_overall;
4400 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4402 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4403 p2p->own_freq_preference = freq;
4407 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4409 if (p2p == NULL || p2p->go_neg_peer == NULL)
4411 return p2p->go_neg_peer->info.p2p_device_addr;
4415 const struct p2p_peer_info *
4416 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4418 struct p2p_device *dev;
4421 dev = p2p_get_device(p2p, addr);
4426 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4432 dev = dl_list_first(&dev->list,
4435 if (!dev || &dev->list == &p2p->devices)
4437 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4440 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4443 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4444 dev = dl_list_first(&dev->list,
4447 if (!dev || &dev->list == &p2p->devices)
4456 int p2p_in_progress(struct p2p_data *p2p)
4460 if (p2p->state == P2P_SEARCH)
4462 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4466 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4470 p2p->go_timeout = go_timeout;
4471 p2p->client_timeout = client_timeout;
4476 #ifdef CONFIG_WIFI_DISPLAY
4478 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4481 struct p2p_group *group;
4483 for (g = 0; g < p2p->num_groups; g++) {
4484 group = p2p->groups[g];
4485 p2p_group_force_beacon_update_ies(group);
4490 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4492 wpabuf_free(p2p->wfd_ie_beacon);
4493 p2p->wfd_ie_beacon = ie;
4494 p2p_update_wfd_ie_groups(p2p);
4499 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4501 wpabuf_free(p2p->wfd_ie_probe_req);
4502 p2p->wfd_ie_probe_req = ie;
4507 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4509 wpabuf_free(p2p->wfd_ie_probe_resp);
4510 p2p->wfd_ie_probe_resp = ie;
4511 p2p_update_wfd_ie_groups(p2p);
4516 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4518 wpabuf_free(p2p->wfd_ie_assoc_req);
4519 p2p->wfd_ie_assoc_req = ie;
4524 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4526 wpabuf_free(p2p->wfd_ie_invitation);
4527 p2p->wfd_ie_invitation = ie;
4532 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4534 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4535 p2p->wfd_ie_prov_disc_req = ie;
4540 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4542 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4543 p2p->wfd_ie_prov_disc_resp = ie;
4548 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4550 wpabuf_free(p2p->wfd_ie_go_neg);
4551 p2p->wfd_ie_go_neg = ie;
4556 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4558 wpabuf_free(p2p->wfd_dev_info);
4560 p2p->wfd_dev_info = wpabuf_dup(elem);
4561 if (p2p->wfd_dev_info == NULL)
4564 p2p->wfd_dev_info = NULL;
4570 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4572 wpabuf_free(p2p->wfd_assoc_bssid);
4574 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4575 if (p2p->wfd_assoc_bssid == NULL)
4578 p2p->wfd_assoc_bssid = NULL;
4584 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4585 const struct wpabuf *elem)
4587 wpabuf_free(p2p->wfd_coupled_sink_info);
4589 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4590 if (p2p->wfd_coupled_sink_info == NULL)
4593 p2p->wfd_coupled_sink_info = NULL;
4598 #endif /* CONFIG_WIFI_DISPLAY */
4601 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4604 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4607 p2p->min_disc_int = min_disc_int;
4608 p2p->max_disc_int = max_disc_int;
4609 p2p->max_disc_tu = max_disc_tu;
4610 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4611 min_disc_int, max_disc_int, max_disc_tu);
4617 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4622 if (!p2p->cfg->debug_print)
4626 vsnprintf(buf, sizeof(buf), fmt, ap);
4627 buf[sizeof(buf) - 1] = '\0';
4629 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4633 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4638 if (!p2p->cfg->debug_print)
4642 vsnprintf(buf, sizeof(buf), fmt, ap);
4643 buf[sizeof(buf) - 1] = '\0';
4645 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4649 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4654 if (!p2p->cfg->debug_print)
4658 vsnprintf(buf, sizeof(buf), fmt, ap);
4659 buf[sizeof(buf) - 1] = '\0';
4661 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4665 void p2p_loop_on_known_peers(struct p2p_data *p2p,
4666 void (*peer_callback)(struct p2p_peer_info *peer,
4670 struct p2p_device *dev, *n;
4672 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
4673 peer_callback(&dev->info, user_data);
4678 #ifdef CONFIG_WPS_NFC
4680 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4682 const u8 *go_dev_addr,
4683 const u8 *ssid, size_t ssid_len)
4686 u8 op_class, channel;
4687 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4689 buf = wpabuf_alloc(1000);
4693 op_class = p2p->cfg->reg_class;
4694 channel = p2p->cfg->channel;
4696 p2p_buf_add_capability(buf, p2p->dev_capab &
4697 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4698 p2p_buf_add_device_info(buf, p2p, NULL);
4700 if (p2p->num_groups > 0) {
4701 int freq = p2p_group_get_freq(p2p->groups[0]);
4702 role = P2P_GO_IN_A_GROUP;
4703 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
4705 "Unknown GO operating frequency %d MHz for NFC handover",
4710 } else if (client_freq > 0) {
4711 role = P2P_CLIENT_IN_A_GROUP;
4712 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
4714 "Unknown client operating frequency %d MHz for NFC handover",
4721 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4724 if (p2p->num_groups > 0) {
4725 /* Limit number of clients to avoid very long message */
4726 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4727 p2p_group_buf_add_id(p2p->groups[0], buf);
4728 } else if (client_freq > 0 &&
4729 go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
4730 ssid && ssid_len > 0) {
4732 * Add the optional P2P Group ID to indicate in which group this
4733 * device is a P2P Client.
4735 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
4742 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4744 const u8 *go_dev_addr,
4745 const u8 *ssid, size_t ssid_len)
4747 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4752 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4754 const u8 *go_dev_addr,
4755 const u8 *ssid, size_t ssid_len)
4757 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4762 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4763 struct p2p_nfc_params *params)
4765 struct p2p_message msg;
4766 struct p2p_device *dev;
4767 const u8 *p2p_dev_addr;
4769 enum p2p_role_indication role;
4771 params->next_step = NO_ACTION;
4773 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4774 params->p2p_attr, params->p2p_len, &msg)) {
4775 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4776 p2p_parse_free(&msg);
4780 if (msg.p2p_device_addr)
4781 p2p_dev_addr = msg.p2p_device_addr;
4782 else if (msg.device_id)
4783 p2p_dev_addr = msg.device_id;
4785 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4786 p2p_parse_free(&msg);
4790 if (msg.oob_dev_password) {
4791 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4792 msg.oob_dev_password_len);
4793 params->oob_dev_pw_len = msg.oob_dev_password_len;
4796 dev = p2p_create_device(p2p, p2p_dev_addr);
4798 p2p_parse_free(&msg);
4802 params->peer = &dev->info;
4804 os_get_reltime(&dev->last_seen);
4805 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4806 p2p_copy_wps_info(p2p, dev, 0, &msg);
4808 if (!msg.oob_go_neg_channel) {
4809 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4813 if (msg.oob_go_neg_channel[3] == 0 &&
4814 msg.oob_go_neg_channel[4] == 0)
4817 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4818 msg.oob_go_neg_channel[4]);
4820 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4823 role = msg.oob_go_neg_channel[5];
4825 if (role == P2P_GO_IN_A_GROUP) {
4826 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
4827 params->go_freq = freq;
4828 } else if (role == P2P_CLIENT_IN_A_GROUP) {
4829 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
4831 params->go_freq = freq;
4833 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4834 dev->oob_go_neg_freq = freq;
4836 if (!params->sel && role != P2P_GO_IN_A_GROUP) {
4837 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4840 p2p_dbg(p2p, "Own listen channel not known");
4843 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4844 dev->oob_go_neg_freq = freq;
4848 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
4849 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
4850 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
4851 params->go_ssid_len);
4854 if (dev->flags & P2P_DEV_USER_REJECTED) {
4855 p2p_dbg(p2p, "Do not report rejected device");
4856 p2p_parse_free(&msg);
4860 if (!(dev->flags & P2P_DEV_REPORTED)) {
4861 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4862 !(dev->flags & P2P_DEV_REPORTED_ONCE));
4863 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4865 p2p_parse_free(&msg);
4867 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
4868 params->next_step = BOTH_GO;
4869 else if (role == P2P_GO_IN_A_GROUP)
4870 params->next_step = JOIN_GROUP;
4871 else if (role == P2P_CLIENT_IN_A_GROUP) {
4872 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4873 params->next_step = PEER_CLIENT;
4874 } else if (p2p->num_groups > 0)
4875 params->next_step = AUTH_JOIN;
4876 else if (params->sel)
4877 params->next_step = INIT_GO_NEG;
4879 params->next_step = RESP_GO_NEG;
4885 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4887 const u8 *own_interface_addr)
4890 p2p->authorized_oob_dev_pw_id = dev_pw_id;
4891 if (dev_pw_id == 0) {
4892 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4896 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4899 p2p->go_intent = go_intent;
4900 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4903 #endif /* CONFIG_WPS_NFC */
4906 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
4908 if (len < 8 || len > 63)
4910 p2p->cfg->passphrase_len = len;
4915 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
4917 p2p->vendor_elem = vendor_elem;