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, int status)
216 struct p2p_go_neg_results res;
217 struct p2p_device *peer = p2p->go_neg_peer;
222 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
223 if (p2p->state != P2P_SEARCH) {
225 * Clear timeouts related to GO Negotiation if no new p2p_find
228 p2p_clear_timeout(p2p);
229 p2p_set_state(p2p, P2P_IDLE);
232 peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
233 peer->wps_method = WPS_NOT_READY;
235 wpabuf_free(peer->go_neg_conf);
236 peer->go_neg_conf = NULL;
237 p2p->go_neg_peer = NULL;
239 os_memset(&res, 0, sizeof(res));
241 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
242 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
243 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
247 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
253 p2p_dbg(p2p, "Starting short listen state (state=%s)",
254 p2p_state_txt(p2p->state));
256 if (p2p->pending_listen_freq) {
257 /* We have a pending p2p_listen request */
258 p2p_dbg(p2p, "p2p_listen command pending already");
262 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
264 p2p_dbg(p2p, "Unknown regulatory class/channel");
268 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
270 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
271 p2p->min_disc_int) * 100;
272 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
273 tu = p2p->max_disc_tu;
274 if (!dev_disc && tu < 100)
275 tu = 100; /* Need to wait in non-device discovery use cases */
276 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
277 tu = p2p->cfg->max_listen * 1000 / 1024;
280 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
281 p2p_set_timeout(p2p, 0, 0);
285 ies = p2p_build_probe_resp_ies(p2p);
289 p2p->pending_listen_freq = freq;
290 p2p->pending_listen_sec = 0;
291 p2p->pending_listen_usec = 1024 * tu;
293 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
295 p2p_dbg(p2p, "Failed to start listen mode");
296 p2p->pending_listen_freq = 0;
302 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
307 p2p_dbg(p2p, "Going to listen(only) state");
309 if (p2p->pending_listen_freq) {
310 /* We have a pending p2p_listen request */
311 p2p_dbg(p2p, "p2p_listen command pending already");
315 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
317 p2p_dbg(p2p, "Unknown regulatory class/channel");
321 p2p->pending_listen_sec = timeout / 1000;
322 p2p->pending_listen_usec = (timeout % 1000) * 1000;
324 if (p2p->p2p_scan_running) {
325 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
326 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
329 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
330 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
334 ies = p2p_build_probe_resp_ies(p2p);
338 p2p->pending_listen_freq = freq;
340 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
341 p2p_dbg(p2p, "Failed to start listen mode");
342 p2p->pending_listen_freq = 0;
348 p2p_set_state(p2p, P2P_LISTEN_ONLY);
354 static void p2p_device_clear_reported(struct p2p_data *p2p)
356 struct p2p_device *dev;
357 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
358 dev->flags &= ~P2P_DEV_REPORTED;
365 * p2p_get_device - Fetch a peer entry
366 * @p2p: P2P module context from p2p_init()
367 * @addr: P2P Device Address of the peer
368 * Returns: Pointer to the device entry or %NULL if not found
370 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
372 struct p2p_device *dev;
373 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
374 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
382 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
383 * @p2p: P2P module context from p2p_init()
384 * @addr: P2P Interface Address of the peer
385 * Returns: Pointer to the device entry or %NULL if not found
387 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
390 struct p2p_device *dev;
391 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
392 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
400 * p2p_create_device - Create a peer entry
401 * @p2p: P2P module context from p2p_init()
402 * @addr: P2P Device Address of the peer
403 * Returns: Pointer to the device entry or %NULL on failure
405 * If there is already an entry for the peer, it will be returned instead of
406 * creating a new one.
408 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
411 struct p2p_device *dev, *oldest = NULL;
414 dev = p2p_get_device(p2p, addr);
418 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
420 if (oldest == NULL ||
421 os_reltime_before(&dev->last_seen, &oldest->last_seen))
424 if (count + 1 > p2p->cfg->max_peers && oldest) {
425 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
426 dl_list_del(&oldest->list);
427 p2p_device_free(p2p, oldest);
430 dev = os_zalloc(sizeof(*dev));
433 dl_list_add(&p2p->devices, &dev->list);
434 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
440 static void p2p_copy_client_info(struct p2p_device *dev,
441 struct p2p_client_info *cli)
443 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
444 dev->info.device_name[cli->dev_name_len] = '\0';
445 dev->info.dev_capab = cli->dev_capab;
446 dev->info.config_methods = cli->config_methods;
447 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
448 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
449 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
450 dev->info.wps_sec_dev_type_list_len);
454 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
455 const u8 *go_interface_addr, int freq,
456 const u8 *gi, size_t gi_len)
458 struct p2p_group_info info;
460 struct p2p_device *dev;
465 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
469 * Clear old data for this group; if the devices are still in the
470 * group, the information will be restored in the loop following this.
472 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
473 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
475 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
476 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
480 for (c = 0; c < info.num_clients; c++) {
481 struct p2p_client_info *cli = &info.client[c];
482 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
484 continue; /* ignore our own entry */
485 dev = p2p_get_device(p2p, cli->p2p_device_addr);
487 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
488 P2P_DEV_PROBE_REQ_ONLY)) {
490 * Update information since we have not
491 * received this directly from the client.
493 p2p_copy_client_info(dev, cli);
496 * Need to update P2P Client Discoverability
497 * flag since it is valid only in P2P Group
500 dev->info.dev_capab &=
501 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
502 dev->info.dev_capab |=
504 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
506 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
507 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
510 dev = p2p_create_device(p2p, cli->p2p_device_addr);
513 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
514 p2p_copy_client_info(dev, cli);
515 dev->oper_freq = freq;
516 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
517 dev->info.p2p_device_addr,
519 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
522 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
524 os_get_reltime(&dev->last_seen);
525 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
526 os_memcpy(dev->member_in_go_iface, go_interface_addr,
534 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
535 int probe_req, const struct p2p_message *msg)
537 os_memcpy(dev->info.device_name, msg->device_name,
538 sizeof(dev->info.device_name));
540 if (msg->manufacturer &&
541 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
542 os_memset(dev->info.manufacturer, 0,
543 sizeof(dev->info.manufacturer));
544 os_memcpy(dev->info.manufacturer, msg->manufacturer,
545 msg->manufacturer_len);
548 if (msg->model_name &&
549 msg->model_name_len < sizeof(dev->info.model_name)) {
550 os_memset(dev->info.model_name, 0,
551 sizeof(dev->info.model_name));
552 os_memcpy(dev->info.model_name, msg->model_name,
553 msg->model_name_len);
556 if (msg->model_number &&
557 msg->model_number_len < sizeof(dev->info.model_number)) {
558 os_memset(dev->info.model_number, 0,
559 sizeof(dev->info.model_number));
560 os_memcpy(dev->info.model_number, msg->model_number,
561 msg->model_number_len);
564 if (msg->serial_number &&
565 msg->serial_number_len < sizeof(dev->info.serial_number)) {
566 os_memset(dev->info.serial_number, 0,
567 sizeof(dev->info.serial_number));
568 os_memcpy(dev->info.serial_number, msg->serial_number,
569 msg->serial_number_len);
572 if (msg->pri_dev_type)
573 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
574 sizeof(dev->info.pri_dev_type));
575 else if (msg->wps_pri_dev_type)
576 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
577 sizeof(dev->info.pri_dev_type));
579 if (msg->wps_sec_dev_type_list) {
580 os_memcpy(dev->info.wps_sec_dev_type_list,
581 msg->wps_sec_dev_type_list,
582 msg->wps_sec_dev_type_list_len);
583 dev->info.wps_sec_dev_type_list_len =
584 msg->wps_sec_dev_type_list_len;
587 if (msg->capability) {
589 * P2P Client Discoverability bit is reserved in all frames
590 * that use this function, so do not change its value here.
592 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
593 dev->info.dev_capab |= msg->capability[0] &
594 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
595 dev->info.group_capab = msg->capability[1];
598 if (msg->ext_listen_timing) {
599 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
600 dev->ext_listen_interval =
601 WPA_GET_LE16(msg->ext_listen_timing + 2);
605 u16 new_config_methods;
606 new_config_methods = msg->config_methods ?
607 msg->config_methods : msg->wps_config_methods;
608 if (new_config_methods &&
609 dev->info.config_methods != new_config_methods) {
610 p2p_dbg(p2p, "Update peer " MACSTR
611 " config_methods 0x%x -> 0x%x",
612 MAC2STR(dev->info.p2p_device_addr),
613 dev->info.config_methods,
615 dev->info.config_methods = new_config_methods;
621 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
627 wpabuf_free(dev->info.vendor_elems);
628 dev->info.vendor_elems = NULL;
632 for (pos = ies; pos + 1 < end; pos += len) {
639 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
643 u32 type = WPA_GET_BE32(pos);
645 if (type == WPA_IE_VENDOR_TYPE ||
646 type == WMM_IE_VENDOR_TYPE ||
647 type == WPS_IE_VENDOR_TYPE ||
648 type == P2P_IE_VENDOR_TYPE ||
649 type == WFD_IE_VENDOR_TYPE)
653 /* Unknown vendor element - make raw IE data available */
654 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
656 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
661 static int p2p_compare_wfd_info(struct p2p_device *dev,
662 const struct p2p_message *msg)
664 if (dev->info.wfd_subelems && msg->wfd_subelems) {
665 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
668 return os_memcmp(dev->info.wfd_subelems->buf,
669 msg->wfd_subelems->buf,
670 dev->info.wfd_subelems->used);
672 if (dev->info.wfd_subelems || msg->wfd_subelems)
680 * p2p_add_device - Add peer entries based on scan results or P2P frames
681 * @p2p: P2P module context from p2p_init()
682 * @addr: Source address of Beacon or Probe Response frame (may be either
683 * P2P Device Address or P2P Interface Address)
684 * @level: Signal level (signal strength of the received frame from the peer)
685 * @freq: Frequency on which the Beacon or Probe Response frame was received
686 * @rx_time: Time when the result was received
687 * @ies: IEs from the Beacon or Probe Response frame
688 * @ies_len: Length of ies buffer in octets
689 * @scan_res: Whether this was based on scan results
690 * Returns: 0 on success, -1 on failure
692 * If the scan result is for a GO, the clients in the group will also be added
693 * to the peer table. This function can also be used with some other frames
694 * like Provision Discovery Request that contains P2P Capability and P2P Device
697 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
698 struct os_reltime *rx_time, int level, const u8 *ies,
699 size_t ies_len, int scan_res)
701 struct p2p_device *dev;
702 struct p2p_message msg;
703 const u8 *p2p_dev_addr;
706 struct os_reltime time_now;
708 os_memset(&msg, 0, sizeof(msg));
709 if (p2p_parse_ies(ies, ies_len, &msg)) {
710 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
711 p2p_parse_free(&msg);
715 if (msg.p2p_device_addr)
716 p2p_dev_addr = msg.p2p_device_addr;
717 else if (msg.device_id)
718 p2p_dev_addr = msg.device_id;
720 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
721 p2p_parse_free(&msg);
725 if (!is_zero_ether_addr(p2p->peer_filter) &&
726 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
727 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
728 " due to peer filter", MAC2STR(p2p_dev_addr));
729 p2p_parse_free(&msg);
733 dev = p2p_create_device(p2p, p2p_dev_addr);
735 p2p_parse_free(&msg);
739 if (rx_time == NULL) {
740 os_get_reltime(&time_now);
745 * Update the device entry only if the new peer
746 * entry is newer than the one previously stored.
748 if (dev->last_seen.sec > 0 &&
749 os_reltime_before(rx_time, &dev->last_seen)) {
750 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
751 (unsigned int) rx_time->sec,
752 (unsigned int) rx_time->usec,
753 (unsigned int) dev->last_seen.sec,
754 (unsigned int) dev->last_seen.usec);
755 p2p_parse_free(&msg);
759 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
761 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
763 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
764 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
766 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
767 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
769 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
770 dev->oper_ssid_len = msg.ssid[1];
773 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
774 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
776 if (*msg.ds_params == 14)
779 ds_freq = 2407 + *msg.ds_params * 5;
780 if (freq != ds_freq) {
781 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
787 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
788 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
789 MACSTR " %d -> %d MHz (DS param %d)",
790 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
791 freq, msg.ds_params ? *msg.ds_params : -1);
794 dev->listen_freq = freq;
796 dev->oper_freq = freq;
798 dev->info.level = level;
800 p2p_copy_wps_info(p2p, dev, 0, &msg);
802 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
803 wpabuf_free(dev->info.wps_vendor_ext[i]);
804 dev->info.wps_vendor_ext[i] = NULL;
807 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
808 if (msg.wps_vendor_ext[i] == NULL)
810 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
811 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
812 if (dev->info.wps_vendor_ext[i] == NULL)
816 wfd_changed = p2p_compare_wfd_info(dev, &msg);
818 if (msg.wfd_subelems) {
819 wpabuf_free(dev->info.wfd_subelems);
820 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
824 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
825 msg.group_info, msg.group_info_len);
828 p2p_parse_free(&msg);
830 p2p_update_peer_vendor_elems(dev, ies, ies_len);
832 if (dev->flags & P2P_DEV_REPORTED && !wfd_changed)
835 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
836 freq, (unsigned int) rx_time->sec,
837 (unsigned int) rx_time->usec);
838 if (dev->flags & P2P_DEV_USER_REJECTED) {
839 p2p_dbg(p2p, "Do not report rejected device");
843 if (dev->info.config_methods == 0 &&
844 (freq == 2412 || freq == 2437 || freq == 2462)) {
846 * If we have only seen a Beacon frame from a GO, we do not yet
847 * know what WPS config methods it supports. Since some
848 * applications use config_methods value from P2P-DEVICE-FOUND
849 * events, postpone reporting this peer until we've fully
850 * discovered its capabilities.
852 * At least for now, do this only if the peer was detected on
853 * one of the social channels since that peer can be easily be
854 * found again and there are no limitations of having to use
855 * passive scan on this channels, so this can be done through
856 * Probe Response frame that includes the config_methods
859 p2p_dbg(p2p, "Do not report peer " MACSTR
860 " with unknown config methods", MAC2STR(addr));
864 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
865 !(dev->flags & P2P_DEV_REPORTED_ONCE));
866 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
872 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
876 if (p2p->go_neg_peer == dev) {
878 * If GO Negotiation is in progress, report that it has failed.
880 p2p_go_neg_failed(p2p, -1);
882 if (p2p->invite_peer == dev)
883 p2p->invite_peer = NULL;
884 if (p2p->sd_peer == dev)
886 if (p2p->pending_client_disc_go == dev)
887 p2p->pending_client_disc_go = NULL;
889 /* dev_lost() device, but only if it was previously dev_found() */
890 if (dev->flags & P2P_DEV_REPORTED_ONCE)
891 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
892 dev->info.p2p_device_addr);
894 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
895 wpabuf_free(dev->info.wps_vendor_ext[i]);
896 dev->info.wps_vendor_ext[i] = NULL;
899 wpabuf_free(dev->info.wfd_subelems);
900 wpabuf_free(dev->info.vendor_elems);
901 wpabuf_free(dev->go_neg_conf);
907 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
909 struct p2p_channels *c;
910 struct p2p_reg_class *cla;
917 c = &p2p->cfg->channels;
918 for (cl = 0; cl < c->reg_classes; cl++) {
919 cla = &c->reg_class[cl];
920 if (cla->reg_class != p2p->last_prog_scan_class)
922 for (ch = 0; ch < cla->channels; ch++) {
923 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
933 /* Start from beginning */
934 reg_class = c->reg_class[0].reg_class;
935 channel = c->reg_class[0].channel[0];
937 /* Pick the next channel */
939 if (ch == cla->channels) {
941 if (cl == c->reg_classes)
945 reg_class = c->reg_class[cl].reg_class;
946 channel = c->reg_class[cl].channel[ch];
949 freq = p2p_channel_to_freq(reg_class, channel);
950 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
951 reg_class, channel, freq);
952 p2p->last_prog_scan_class = reg_class;
953 p2p->last_prog_scan_chan = channel;
955 if (freq == 2412 || freq == 2437 || freq == 2462)
956 return 0; /* No need to add social channels */
961 static void p2p_search(struct p2p_data *p2p)
964 enum p2p_scan_type type;
965 u16 pw_id = DEV_PW_DEFAULT;
968 if (p2p->drv_in_listen) {
969 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
972 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
974 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
975 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
976 type = P2P_SCAN_SOCIAL_PLUS_ONE;
977 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
979 type = P2P_SCAN_SOCIAL;
980 p2p_dbg(p2p, "Starting search");
983 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
984 p2p->num_req_dev_types, p2p->req_dev_types,
985 p2p->find_dev_id, pw_id);
987 p2p_dbg(p2p, "Scan request schedule failed");
988 p2p_continue_find(p2p);
993 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
995 struct p2p_data *p2p = eloop_ctx;
996 p2p_dbg(p2p, "Find timeout -> stop");
1001 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1004 p2p_dbg(p2p, "Scan request failed");
1005 /* Do continue find even for the first p2p_find_scan */
1006 p2p_continue_find(p2p);
1008 p2p_dbg(p2p, "Running p2p_scan");
1009 p2p->p2p_scan_running = 1;
1010 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1011 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1017 static int p2p_run_after_scan(struct p2p_data *p2p)
1019 struct p2p_device *dev;
1020 enum p2p_after_scan op;
1022 if (p2p->after_scan_tx) {
1023 p2p->after_scan_tx_in_progress = 1;
1024 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1025 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1026 p2p->after_scan_tx->freq,
1027 p2p->after_scan_tx->dst,
1028 p2p->after_scan_tx->src,
1029 p2p->after_scan_tx->bssid,
1030 (u8 *) (p2p->after_scan_tx + 1),
1031 p2p->after_scan_tx->len,
1032 p2p->after_scan_tx->wait_time);
1033 os_free(p2p->after_scan_tx);
1034 p2p->after_scan_tx = NULL;
1038 op = p2p->start_after_scan;
1039 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1041 case P2P_AFTER_SCAN_NOTHING:
1043 case P2P_AFTER_SCAN_LISTEN:
1044 p2p_dbg(p2p, "Start previously requested Listen state");
1045 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1046 p2p->pending_listen_usec / 1000);
1048 case P2P_AFTER_SCAN_CONNECT:
1049 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1050 MAC2STR(p2p->after_scan_peer));
1051 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1053 p2p_dbg(p2p, "Peer not known anymore");
1056 p2p_connect_send(p2p, dev);
1064 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1066 struct p2p_data *p2p = eloop_ctx;
1068 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1069 running = p2p->p2p_scan_running;
1070 /* Make sure we recover from missed scan results callback */
1071 p2p->p2p_scan_running = 0;
1074 p2p_run_after_scan(p2p);
1078 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1080 p2p->num_req_dev_types = 0;
1081 os_free(p2p->req_dev_types);
1082 p2p->req_dev_types = NULL;
1086 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1087 enum p2p_discovery_type type,
1088 unsigned int num_req_dev_types, const u8 *req_dev_types,
1089 const u8 *dev_id, unsigned int search_delay)
1093 p2p_dbg(p2p, "Starting find (type=%d)", type);
1094 os_get_reltime(&p2p->find_start);
1095 if (p2p->p2p_scan_running) {
1096 p2p_dbg(p2p, "p2p_scan is already running");
1099 p2p_free_req_dev_types(p2p);
1100 if (req_dev_types && num_req_dev_types) {
1101 p2p->req_dev_types = os_malloc(num_req_dev_types *
1103 if (p2p->req_dev_types == NULL)
1105 os_memcpy(p2p->req_dev_types, req_dev_types,
1106 num_req_dev_types * WPS_DEV_TYPE_LEN);
1107 p2p->num_req_dev_types = num_req_dev_types;
1111 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1112 p2p->find_dev_id = p2p->find_dev_id_buf;
1114 p2p->find_dev_id = NULL;
1116 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1117 p2p_clear_timeout(p2p);
1118 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1119 p2p->find_type = type;
1120 p2p_device_clear_reported(p2p);
1121 p2p_set_state(p2p, P2P_SEARCH);
1122 p2p->search_delay = search_delay;
1123 p2p->in_search_delay = 0;
1124 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1125 p2p->last_p2p_find_timeout = timeout;
1127 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1130 case P2P_FIND_START_WITH_FULL:
1131 case P2P_FIND_PROGRESSIVE:
1132 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1133 p2p->num_req_dev_types,
1134 p2p->req_dev_types, dev_id,
1137 case P2P_FIND_ONLY_SOCIAL:
1138 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1139 p2p->num_req_dev_types,
1140 p2p->req_dev_types, dev_id,
1147 if (res != 0 && p2p->p2p_scan_running) {
1148 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1149 /* wait for the previous p2p_scan to complete */
1150 res = 0; /* do not report failure */
1151 } else if (res != 0) {
1152 p2p_dbg(p2p, "Failed to start p2p_scan");
1153 p2p_set_state(p2p, P2P_IDLE);
1154 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1161 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1163 p2p_dbg(p2p, "Stopping find");
1164 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1165 p2p_clear_timeout(p2p);
1166 if (p2p->state == P2P_SEARCH)
1167 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1168 p2p_set_state(p2p, P2P_IDLE);
1169 p2p_free_req_dev_types(p2p);
1170 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1171 if (p2p->go_neg_peer)
1172 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1173 p2p->go_neg_peer = NULL;
1174 p2p->sd_peer = NULL;
1175 p2p->invite_peer = NULL;
1176 p2p_stop_listen_for_freq(p2p, freq);
1180 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1182 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1183 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1186 if (p2p->in_listen) {
1188 p2p_clear_timeout(p2p);
1190 if (p2p->drv_in_listen) {
1192 * The driver may not deliver callback to p2p_listen_end()
1193 * when the operation gets canceled, so clear the internal
1194 * variable that is tracking driver state.
1196 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1197 p2p->drv_in_listen = 0;
1199 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1203 void p2p_stop_listen(struct p2p_data *p2p)
1205 if (p2p->state != P2P_LISTEN_ONLY) {
1206 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1210 p2p_stop_listen_for_freq(p2p, 0);
1211 p2p_set_state(p2p, P2P_IDLE);
1215 void p2p_stop_find(struct p2p_data *p2p)
1217 p2p->pending_listen_freq = 0;
1218 p2p_stop_find_for_freq(p2p, 0);
1222 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1223 unsigned int force_freq,
1224 unsigned int pref_freq, int go)
1226 u8 op_class, op_channel;
1227 unsigned int freq = force_freq ? force_freq : pref_freq;
1229 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1230 force_freq, pref_freq, go);
1231 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1232 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1236 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1237 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1239 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1240 freq, op_class, op_channel);
1244 p2p->op_reg_class = op_class;
1245 p2p->op_channel = op_channel;
1248 p2p->channels.reg_classes = 1;
1249 p2p->channels.reg_class[0].channels = 1;
1250 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1251 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1253 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1254 sizeof(struct p2p_channels));
1261 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1263 u8 op_class, op_channel;
1264 const int op_classes_5ghz[] = { 124, 115, 0 };
1265 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1266 const int op_classes_vht[] = { 128, 0 };
1268 p2p_dbg(p2p, "Prepare channel best");
1270 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1271 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1272 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1274 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1275 p2p->op_reg_class = op_class;
1276 p2p->op_channel = op_channel;
1277 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1278 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1279 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1281 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1282 p2p->op_reg_class = op_class;
1283 p2p->op_channel = op_channel;
1284 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1285 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1286 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1287 &op_channel) == 0) {
1288 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1289 p2p->op_reg_class = op_class;
1290 p2p->op_channel = op_channel;
1291 } else if (p2p->cfg->num_pref_chan > 0 &&
1292 p2p_channels_includes(&p2p->cfg->channels,
1293 p2p->cfg->pref_chan[0].op_class,
1294 p2p->cfg->pref_chan[0].chan)) {
1295 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1296 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1297 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1298 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1299 &p2p->op_reg_class, &p2p->op_channel) ==
1301 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1302 p2p->op_reg_class, p2p->op_channel);
1303 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1304 &p2p->op_reg_class, &p2p->op_channel) ==
1306 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1307 p2p->op_reg_class, p2p->op_channel);
1308 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1309 &p2p->op_reg_class, &p2p->op_channel) ==
1311 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1312 p2p->op_reg_class, p2p->op_channel);
1313 } else if (p2p_channels_includes(&p2p->cfg->channels,
1314 p2p->cfg->op_reg_class,
1315 p2p->cfg->op_channel)) {
1316 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1317 p2p->op_reg_class = p2p->cfg->op_reg_class;
1318 p2p->op_channel = p2p->cfg->op_channel;
1319 } else if (p2p_channel_random_social(&p2p->cfg->channels,
1321 &p2p->op_channel) == 0) {
1322 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1323 p2p->op_reg_class, p2p->op_channel);
1325 /* Select any random available channel from the first available
1326 * operating class */
1327 p2p_channel_select(&p2p->cfg->channels, NULL,
1330 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1331 p2p->op_channel, p2p->op_reg_class);
1334 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1335 sizeof(struct p2p_channels));
1340 * p2p_prepare_channel - Select operating channel for GO Negotiation
1341 * @p2p: P2P module context from p2p_init()
1342 * @dev: Selected peer device
1343 * @force_freq: Forced frequency in MHz or 0 if not forced
1344 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1345 * @go: Whether the local end will be forced to be GO
1346 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1348 * This function is used to do initial operating channel selection for GO
1349 * Negotiation prior to having received peer information. The selected channel
1350 * may be further optimized in p2p_reselect_channel() once the peer information
1353 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1354 unsigned int force_freq, unsigned int pref_freq, int go)
1356 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1357 force_freq, pref_freq, go);
1358 if (force_freq || pref_freq) {
1359 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1363 p2p_prepare_channel_best(p2p);
1365 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1367 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1368 else if (!force_freq)
1369 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1371 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1373 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1374 p2p->op_reg_class, p2p->op_channel,
1375 force_freq ? " (forced)" : "");
1378 dev->flags |= P2P_DEV_FORCE_FREQ;
1380 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1386 static void p2p_set_dev_persistent(struct p2p_device *dev,
1387 int persistent_group)
1389 switch (persistent_group) {
1391 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1392 P2P_DEV_PREFER_PERSISTENT_RECONN);
1395 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1396 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1399 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1400 P2P_DEV_PREFER_PERSISTENT_RECONN;
1406 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1407 enum p2p_wps_method wps_method,
1408 int go_intent, const u8 *own_interface_addr,
1409 unsigned int force_freq, int persistent_group,
1410 const u8 *force_ssid, size_t force_ssid_len,
1411 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1413 struct p2p_device *dev;
1415 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1416 " GO Intent=%d Intended Interface Address=" MACSTR
1417 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1419 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1420 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1422 dev = p2p_get_device(p2p, peer_addr);
1423 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1424 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1425 MAC2STR(peer_addr));
1429 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1430 go_intent == 15) < 0)
1433 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1434 if (!(dev->info.dev_capab &
1435 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1436 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1437 " that is in a group and is not discoverable",
1438 MAC2STR(peer_addr));
1441 if (dev->oper_freq <= 0) {
1442 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1443 " with incomplete information",
1444 MAC2STR(peer_addr));
1449 * First, try to connect directly. If the peer does not
1450 * acknowledge frames, assume it is sleeping and use device
1451 * discoverability via the GO at that point.
1457 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1458 force_ssid, force_ssid_len);
1459 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1460 p2p->ssid_len = force_ssid_len;
1464 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1465 dev->flags &= ~P2P_DEV_USER_REJECTED;
1466 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1467 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1468 if (pd_before_go_neg)
1469 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1471 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1473 * Assign dialog token and tie breaker here to use the same
1474 * values in each retry within the same GO Negotiation exchange.
1476 dev->dialog_token++;
1477 if (dev->dialog_token == 0)
1478 dev->dialog_token = 1;
1479 dev->tie_breaker = p2p->next_tie_breaker;
1480 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1482 dev->connect_reqs = 0;
1483 dev->go_neg_req_sent = 0;
1484 dev->go_state = UNKNOWN_GO;
1485 p2p_set_dev_persistent(dev, persistent_group);
1486 p2p->go_intent = go_intent;
1487 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1489 if (p2p->state != P2P_IDLE)
1492 if (p2p->after_scan_tx) {
1494 * We need to drop the pending frame to avoid issues with the
1495 * new GO Negotiation, e.g., when the pending frame was from a
1496 * previous attempt at starting a GO Negotiation.
1498 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1499 os_free(p2p->after_scan_tx);
1500 p2p->after_scan_tx = NULL;
1503 dev->wps_method = wps_method;
1504 dev->oob_pw_id = oob_pw_id;
1505 dev->status = P2P_SC_SUCCESS;
1507 if (p2p->p2p_scan_running) {
1508 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1509 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1510 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1513 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1515 return p2p_connect_send(p2p, dev);
1519 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1520 enum p2p_wps_method wps_method,
1521 int go_intent, const u8 *own_interface_addr,
1522 unsigned int force_freq, int persistent_group,
1523 const u8 *force_ssid, size_t force_ssid_len,
1524 unsigned int pref_freq, u16 oob_pw_id)
1526 struct p2p_device *dev;
1528 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1529 " GO Intent=%d Intended Interface Address=" MACSTR
1530 " wps_method=%d persistent_group=%d oob_pw_id=%u",
1531 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1532 wps_method, persistent_group, oob_pw_id);
1534 dev = p2p_get_device(p2p, peer_addr);
1536 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1537 MAC2STR(peer_addr));
1541 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1547 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1548 force_ssid, force_ssid_len);
1549 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1550 p2p->ssid_len = force_ssid_len;
1554 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1555 dev->flags &= ~P2P_DEV_USER_REJECTED;
1556 dev->go_neg_req_sent = 0;
1557 dev->go_state = UNKNOWN_GO;
1558 p2p_set_dev_persistent(dev, persistent_group);
1559 p2p->go_intent = go_intent;
1560 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1562 dev->wps_method = wps_method;
1563 dev->oob_pw_id = oob_pw_id;
1564 dev->status = P2P_SC_SUCCESS;
1570 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1571 struct p2p_device *dev, struct p2p_message *msg)
1573 os_get_reltime(&dev->last_seen);
1575 p2p_copy_wps_info(p2p, dev, 0, msg);
1577 if (msg->listen_channel) {
1579 freq = p2p_channel_to_freq(msg->listen_channel[3],
1580 msg->listen_channel[4]);
1582 p2p_dbg(p2p, "Unknown peer Listen channel: "
1583 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1584 msg->listen_channel[0],
1585 msg->listen_channel[1],
1586 msg->listen_channel[2],
1587 msg->listen_channel[3],
1588 msg->listen_channel[4]);
1590 p2p_dbg(p2p, "Update peer " MACSTR
1591 " Listen channel: %u -> %u MHz",
1592 MAC2STR(dev->info.p2p_device_addr),
1593 dev->listen_freq, freq);
1594 dev->listen_freq = freq;
1598 if (msg->wfd_subelems) {
1599 wpabuf_free(dev->info.wfd_subelems);
1600 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1603 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1604 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1605 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1607 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1608 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1610 MAC2STR(dev->info.p2p_device_addr),
1611 dev->info.dev_capab, dev->info.group_capab,
1612 dev->info.device_name, dev->listen_freq);
1615 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1617 if (dev->flags & P2P_DEV_USER_REJECTED) {
1618 p2p_dbg(p2p, "Do not report rejected device");
1622 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1623 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1624 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1628 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1630 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1631 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1632 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1633 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1634 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1638 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1640 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1641 p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1646 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1648 struct p2p_go_neg_results res;
1649 int go = peer->go_state == LOCAL_GO;
1650 struct p2p_channels intersection;
1652 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1653 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1655 os_memset(&res, 0, sizeof(res));
1657 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1658 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1659 res.wps_method = peer->wps_method;
1660 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1661 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1662 res.persistent_group = 2;
1664 res.persistent_group = 1;
1668 /* Setup AP mode for WPS provisioning */
1669 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1671 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1672 res.ssid_len = p2p->ssid_len;
1673 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1675 res.freq = peer->oper_freq;
1676 if (p2p->ssid_len) {
1677 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1678 res.ssid_len = p2p->ssid_len;
1682 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1683 p2p_channels_dump(p2p, "peer channels", &peer->channels);
1684 p2p_channels_intersect(&p2p->channels, &peer->channels,
1687 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1688 p2p_channels_dump(p2p, "intersection after no-GO removal",
1692 p2p_channels_to_freqs(&intersection, res.freq_list,
1695 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1697 p2p_clear_timeout(p2p);
1699 peer->go_neg_req_sent = 0;
1700 peer->wps_method = WPS_NOT_READY;
1701 peer->oob_pw_id = 0;
1702 wpabuf_free(peer->go_neg_conf);
1703 peer->go_neg_conf = NULL;
1705 p2p_set_state(p2p, P2P_PROVISIONING);
1706 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1710 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1711 const u8 *data, size_t len, int rx_freq)
1713 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1714 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1720 case P2P_GO_NEG_REQ:
1721 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1723 case P2P_GO_NEG_RESP:
1724 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1726 case P2P_GO_NEG_CONF:
1727 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1729 case P2P_INVITATION_REQ:
1730 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1733 case P2P_INVITATION_RESP:
1734 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
1735 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1737 case P2P_PROV_DISC_REQ:
1738 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1740 case P2P_PROV_DISC_RESP:
1741 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1743 case P2P_DEV_DISC_REQ:
1744 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1746 case P2P_DEV_DISC_RESP:
1747 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1750 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1757 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1758 const u8 *sa, const u8 *bssid, const u8 *data,
1759 size_t len, int freq)
1765 case WLAN_PA_VENDOR_SPECIFIC:
1770 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1776 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1778 case WLAN_PA_GAS_INITIAL_REQ:
1779 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1781 case WLAN_PA_GAS_INITIAL_RESP:
1782 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1784 case WLAN_PA_GAS_COMEBACK_REQ:
1785 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1787 case WLAN_PA_GAS_COMEBACK_RESP:
1788 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1794 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1795 const u8 *bssid, u8 category,
1796 const u8 *data, size_t len, int freq)
1798 if (category == WLAN_ACTION_PUBLIC) {
1799 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1803 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1809 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1814 /* P2P action frame */
1815 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1816 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1822 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1825 case P2P_PRESENCE_REQ:
1826 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1828 case P2P_PRESENCE_RESP:
1829 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1831 case P2P_GO_DISC_REQ:
1832 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1835 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1841 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1843 struct p2p_data *p2p = eloop_ctx;
1844 if (p2p->go_neg_peer == NULL)
1846 if (p2p->pending_listen_freq) {
1847 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1848 p2p->pending_listen_freq = 0;
1850 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1851 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1853 * Set new timeout to make sure a previously set one does not expire
1854 * too quickly while waiting for the GO Negotiation to complete.
1856 p2p_set_timeout(p2p, 0, 500000);
1857 p2p_connect_send(p2p, p2p->go_neg_peer);
1861 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1863 struct p2p_data *p2p = eloop_ctx;
1864 if (p2p->invite_peer == NULL)
1866 if (p2p->pending_listen_freq) {
1867 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1868 p2p->pending_listen_freq = 0;
1870 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1871 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1872 p2p->invite_dev_pw_id);
1876 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1877 const u8 *ie, size_t ie_len)
1879 struct p2p_message msg;
1880 struct p2p_device *dev;
1882 os_memset(&msg, 0, sizeof(msg));
1883 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1885 p2p_parse_free(&msg);
1886 return; /* not a P2P probe */
1889 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1890 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1892 /* The Probe Request is not part of P2P Device Discovery. It is
1893 * not known whether the source address of the frame is the P2P
1894 * Device Address or P2P Interface Address. Do not add a new
1895 * peer entry based on this frames.
1897 p2p_parse_free(&msg);
1901 dev = p2p_get_device(p2p, addr);
1903 if (dev->country[0] == 0 && msg.listen_channel)
1904 os_memcpy(dev->country, msg.listen_channel, 3);
1905 os_get_reltime(&dev->last_seen);
1906 p2p_parse_free(&msg);
1907 return; /* already known */
1910 dev = p2p_create_device(p2p, addr);
1912 p2p_parse_free(&msg);
1916 os_get_reltime(&dev->last_seen);
1917 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1919 if (msg.listen_channel) {
1920 os_memcpy(dev->country, msg.listen_channel, 3);
1921 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1922 msg.listen_channel[4]);
1925 p2p_copy_wps_info(p2p, dev, 1, &msg);
1927 if (msg.wfd_subelems) {
1928 wpabuf_free(dev->info.wfd_subelems);
1929 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1932 p2p_parse_free(&msg);
1934 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1935 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1936 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1937 dev->info.group_capab, dev->info.device_name,
1942 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1944 struct p2p_message *msg)
1946 struct p2p_device *dev;
1948 dev = p2p_get_device(p2p, addr);
1950 os_get_reltime(&dev->last_seen);
1951 return dev; /* already known */
1954 dev = p2p_create_device(p2p, addr);
1958 p2p_add_dev_info(p2p, addr, dev, msg);
1964 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1966 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1968 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1969 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1970 WPA_GET_BE16(&req_dev_type[6]) == 0)
1971 return 1; /* Category match with wildcard OUI/sub-category */
1976 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1977 size_t num_req_dev_type)
1980 for (i = 0; i < num_req_dev_type; i++) {
1981 if (dev_type_match(dev_type, req_dev_type[i]))
1989 * p2p_match_dev_type - Match local device type with requested type
1990 * @p2p: P2P module context from p2p_init()
1991 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1992 * Returns: 1 on match, 0 on mismatch
1994 * This function can be used to match the Requested Device Type attribute in
1995 * WPS IE with the local device types for deciding whether to reply to a Probe
1998 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2000 struct wps_parse_attr attr;
2003 if (wps_parse_msg(wps, &attr))
2004 return 1; /* assume no Requested Device Type attributes */
2006 if (attr.num_req_dev_type == 0)
2007 return 1; /* no Requested Device Type attributes -> match */
2009 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2010 attr.num_req_dev_type))
2011 return 1; /* Own Primary Device Type matches */
2013 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2014 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2016 attr.num_req_dev_type))
2017 return 1; /* Own Secondary Device Type matches */
2020 /* No matching device type found */
2025 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2032 #ifdef CONFIG_WIFI_DISPLAY
2033 if (p2p->wfd_ie_probe_resp)
2034 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2035 #endif /* CONFIG_WIFI_DISPLAY */
2037 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2038 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2040 buf = wpabuf_alloc(1000 + extra);
2044 if (p2p->go_neg_peer) {
2045 /* Advertise immediate availability of WPS credential */
2046 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2049 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2050 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2055 #ifdef CONFIG_WIFI_DISPLAY
2056 if (p2p->wfd_ie_probe_resp)
2057 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2058 #endif /* CONFIG_WIFI_DISPLAY */
2060 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2062 p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2065 len = p2p_buf_add_ie_hdr(buf);
2066 p2p_buf_add_capability(buf, p2p->dev_capab &
2067 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2068 if (p2p->ext_listen_interval)
2069 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2070 p2p->ext_listen_interval);
2071 p2p_buf_add_device_info(buf, p2p, NULL);
2072 p2p_buf_update_ie_hdr(buf, len);
2078 static enum p2p_probe_req_status
2079 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2080 const u8 *bssid, const u8 *ie, size_t ie_len)
2082 struct ieee802_11_elems elems;
2084 struct ieee80211_mgmt *resp;
2085 struct p2p_message msg;
2088 if (!p2p->in_listen || !p2p->drv_in_listen) {
2089 /* not in Listen state - ignore Probe Request */
2090 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2091 p2p->in_listen, p2p->drv_in_listen);
2092 return P2P_PREQ_NOT_LISTEN;
2095 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2097 /* Ignore invalid Probe Request frames */
2098 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2099 return P2P_PREQ_MALFORMED;
2102 if (elems.p2p == NULL) {
2103 /* not a P2P probe - ignore it */
2104 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2105 return P2P_PREQ_NOT_P2P;
2108 if (dst && !is_broadcast_ether_addr(dst) &&
2109 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2110 /* Not sent to the broadcast address or our P2P Device Address
2112 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2114 return P2P_PREQ_NOT_PROCESSED;
2117 if (bssid && !is_broadcast_ether_addr(bssid)) {
2118 /* Not sent to the Wildcard BSSID */
2119 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2121 return P2P_PREQ_NOT_PROCESSED;
2124 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2125 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2127 /* not using P2P Wildcard SSID - ignore */
2128 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2129 return P2P_PREQ_NOT_PROCESSED;
2132 if (supp_rates_11b_only(&elems)) {
2133 /* Indicates support for 11b rates only */
2134 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2135 return P2P_PREQ_NOT_P2P;
2138 os_memset(&msg, 0, sizeof(msg));
2139 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2140 /* Could not parse P2P attributes */
2141 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2142 return P2P_PREQ_NOT_P2P;
2145 if (msg.device_id &&
2146 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2147 /* Device ID did not match */
2148 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2149 MAC2STR(msg.device_id));
2150 p2p_parse_free(&msg);
2151 return P2P_PREQ_NOT_PROCESSED;
2154 /* Check Requested Device Type match */
2155 if (msg.wps_attributes &&
2156 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2157 /* No match with Requested Device Type */
2158 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2159 p2p_parse_free(&msg);
2160 return P2P_PREQ_NOT_PROCESSED;
2162 p2p_parse_free(&msg);
2164 if (!p2p->cfg->send_probe_resp) {
2165 /* Response generated elsewhere */
2166 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2167 return P2P_PREQ_NOT_PROCESSED;
2170 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2173 * We do not really have a specific BSS that this frame is advertising,
2174 * so build a frame that has some information in valid format. This is
2175 * really only used for discovery purposes, not to learn exact BSS
2178 ies = p2p_build_probe_resp_ies(p2p);
2180 return P2P_PREQ_NOT_PROCESSED;
2182 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2185 return P2P_PREQ_NOT_PROCESSED;
2189 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2191 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2192 (WLAN_FC_STYPE_PROBE_RESP << 4));
2193 os_memcpy(resp->da, addr, ETH_ALEN);
2194 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2195 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2196 resp->u.probe_resp.beacon_int = host_to_le16(100);
2197 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2198 resp->u.probe_resp.capab_info =
2199 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2200 WLAN_CAPABILITY_PRIVACY |
2201 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2203 wpabuf_put_u8(buf, WLAN_EID_SSID);
2204 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2205 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2207 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2208 wpabuf_put_u8(buf, 8);
2209 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2210 wpabuf_put_u8(buf, 90 / 5);
2211 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2212 wpabuf_put_u8(buf, 180 / 5);
2213 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2214 wpabuf_put_u8(buf, 360 / 5);
2215 wpabuf_put_u8(buf, 480 / 5);
2216 wpabuf_put_u8(buf, 540 / 5);
2218 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2219 wpabuf_put_u8(buf, 1);
2220 wpabuf_put_u8(buf, p2p->cfg->channel);
2222 wpabuf_put_buf(buf, ies);
2225 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2229 return P2P_PREQ_NOT_PROCESSED;
2233 enum p2p_probe_req_status
2234 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2235 const u8 *bssid, const u8 *ie, size_t ie_len)
2237 enum p2p_probe_req_status res;
2239 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2241 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2243 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2245 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2247 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2248 /* Received a Probe Request from GO Negotiation peer */
2249 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2250 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2251 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2252 return P2P_PREQ_PROCESSED;
2255 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2257 (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2258 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2260 /* Received a Probe Request from Invite peer */
2261 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2262 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2263 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2264 return P2P_PREQ_PROCESSED;
2271 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2272 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2281 return 0; /* WLAN AP is not a P2P manager */
2284 * (Re)Association Request - P2P IE
2285 * P2P Capability attribute (shall be present)
2286 * P2P Interface attribute (present if concurrent device and
2287 * P2P Management is enabled)
2289 tmp = wpabuf_alloc(200);
2293 lpos = p2p_buf_add_ie_hdr(tmp);
2295 if (p2p->num_groups > 0) {
2296 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2297 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2298 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2300 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2302 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2303 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2304 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2305 p2p_buf_add_p2p_interface(tmp, p2p);
2306 p2p_buf_update_ie_hdr(tmp, lpos);
2308 tmplen = wpabuf_len(tmp);
2312 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2321 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2322 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2326 struct p2p_device *peer;
2332 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2334 #ifdef CONFIG_WIFI_DISPLAY
2335 if (p2p->wfd_ie_assoc_req)
2336 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2337 #endif /* CONFIG_WIFI_DISPLAY */
2339 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2340 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2343 * (Re)Association Request - P2P IE
2344 * P2P Capability attribute (shall be present)
2345 * Extended Listen Timing (may be present)
2346 * P2P Device Info attribute (shall be present)
2348 tmp = wpabuf_alloc(200 + extra);
2352 #ifdef CONFIG_WIFI_DISPLAY
2353 if (p2p->wfd_ie_assoc_req)
2354 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2355 #endif /* CONFIG_WIFI_DISPLAY */
2357 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2359 p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2361 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2363 lpos = p2p_buf_add_ie_hdr(tmp);
2364 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2365 if (p2p->ext_listen_interval)
2366 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2367 p2p->ext_listen_interval);
2368 p2p_buf_add_device_info(tmp, p2p, peer);
2369 p2p_buf_update_ie_hdr(tmp, lpos);
2371 tmplen = wpabuf_len(tmp);
2375 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2384 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2386 struct wpabuf *p2p_ie;
2389 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2393 ret = p2p_attr_text(p2p_ie, buf, end);
2394 wpabuf_free(p2p_ie);
2399 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2401 struct p2p_message msg;
2403 os_memset(&msg, 0, sizeof(msg));
2404 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2407 if (msg.p2p_device_addr) {
2408 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2410 } else if (msg.device_id) {
2411 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2418 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2420 struct wpabuf *p2p_ie;
2423 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2424 P2P_IE_VENDOR_TYPE);
2427 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2428 wpabuf_free(p2p_ie);
2433 static void p2p_clear_go_neg(struct p2p_data *p2p)
2435 p2p->go_neg_peer = NULL;
2436 p2p_clear_timeout(p2p);
2437 p2p_set_state(p2p, P2P_IDLE);
2441 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2443 if (p2p->go_neg_peer == NULL) {
2444 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2445 return; /* No pending Group Formation */
2448 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2450 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2451 MACSTR " (GO Negotiation peer " MACSTR ")",
2453 MAC2STR(p2p->go_neg_peer->intended_addr));
2454 return; /* Ignore unexpected peer address */
2457 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2460 p2p_clear_go_neg(p2p);
2464 void p2p_group_formation_failed(struct p2p_data *p2p)
2466 if (p2p->go_neg_peer == NULL) {
2467 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2468 return; /* No pending Group Formation */
2471 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2472 MAC2STR(p2p->go_neg_peer->intended_addr));
2474 p2p_clear_go_neg(p2p);
2478 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2480 struct p2p_data *p2p;
2482 if (cfg->max_peers < 1 ||
2483 cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2486 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2489 p2p->cfg = (struct p2p_config *) (p2p + 1);
2490 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2492 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2493 if (cfg->manufacturer)
2494 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2495 if (cfg->model_name)
2496 p2p->cfg->model_name = os_strdup(cfg->model_name);
2497 if (cfg->model_number)
2498 p2p->cfg->model_number = os_strdup(cfg->model_number);
2499 if (cfg->serial_number)
2500 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2501 if (cfg->pref_chan) {
2502 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2503 sizeof(struct p2p_channel));
2504 if (p2p->cfg->pref_chan) {
2505 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2506 cfg->num_pref_chan *
2507 sizeof(struct p2p_channel));
2509 p2p->cfg->num_pref_chan = 0;
2512 p2p->min_disc_int = 1;
2513 p2p->max_disc_int = 3;
2514 p2p->max_disc_tu = -1;
2516 if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2517 p2p->next_tie_breaker = 0;
2518 p2p->next_tie_breaker &= 0x01;
2519 if (cfg->sd_request)
2520 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2521 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2522 if (cfg->concurrent_operations)
2523 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2524 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2526 dl_list_init(&p2p->devices);
2528 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2529 p2p_expiration_timeout, p2p, NULL);
2531 p2p->go_timeout = 100;
2532 p2p->client_timeout = 20;
2533 p2p->num_p2p_sd_queries = 0;
2535 p2p_dbg(p2p, "initialized");
2536 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2537 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2543 void p2p_deinit(struct p2p_data *p2p)
2545 #ifdef CONFIG_WIFI_DISPLAY
2546 wpabuf_free(p2p->wfd_ie_beacon);
2547 wpabuf_free(p2p->wfd_ie_probe_req);
2548 wpabuf_free(p2p->wfd_ie_probe_resp);
2549 wpabuf_free(p2p->wfd_ie_assoc_req);
2550 wpabuf_free(p2p->wfd_ie_invitation);
2551 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2552 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2553 wpabuf_free(p2p->wfd_ie_go_neg);
2554 wpabuf_free(p2p->wfd_dev_info);
2555 wpabuf_free(p2p->wfd_assoc_bssid);
2556 wpabuf_free(p2p->wfd_coupled_sink_info);
2557 #endif /* CONFIG_WIFI_DISPLAY */
2559 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2560 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2561 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2562 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2563 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2565 p2p_free_req_dev_types(p2p);
2566 os_free(p2p->cfg->dev_name);
2567 os_free(p2p->cfg->manufacturer);
2568 os_free(p2p->cfg->model_name);
2569 os_free(p2p->cfg->model_number);
2570 os_free(p2p->cfg->serial_number);
2571 os_free(p2p->cfg->pref_chan);
2572 os_free(p2p->groups);
2573 wpabuf_free(p2p->sd_resp);
2574 os_free(p2p->after_scan_tx);
2575 p2p_remove_wps_vendor_extensions(p2p);
2576 os_free(p2p->no_go_freq.range);
2581 void p2p_flush(struct p2p_data *p2p)
2583 struct p2p_device *dev, *prev;
2585 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2587 dl_list_del(&dev->list);
2588 p2p_device_free(p2p, dev);
2590 p2p_free_sd_queries(p2p);
2591 os_free(p2p->after_scan_tx);
2592 p2p->after_scan_tx = NULL;
2596 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2598 struct p2p_device *dev;
2600 dev = p2p_get_device(p2p, addr);
2604 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2606 if (p2p->go_neg_peer == dev) {
2607 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2608 p2p->go_neg_peer = NULL;
2611 dev->wps_method = WPS_NOT_READY;
2613 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2614 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2616 /* Check if after_scan_tx is for this peer. If so free it */
2617 if (p2p->after_scan_tx &&
2618 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2619 os_free(p2p->after_scan_tx);
2620 p2p->after_scan_tx = NULL;
2627 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2629 os_free(p2p->cfg->dev_name);
2631 p2p->cfg->dev_name = os_strdup(dev_name);
2632 if (p2p->cfg->dev_name == NULL)
2635 p2p->cfg->dev_name = NULL;
2640 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2642 os_free(p2p->cfg->manufacturer);
2643 p2p->cfg->manufacturer = NULL;
2645 p2p->cfg->manufacturer = os_strdup(manufacturer);
2646 if (p2p->cfg->manufacturer == NULL)
2654 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2656 os_free(p2p->cfg->model_name);
2657 p2p->cfg->model_name = NULL;
2659 p2p->cfg->model_name = os_strdup(model_name);
2660 if (p2p->cfg->model_name == NULL)
2668 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2670 os_free(p2p->cfg->model_number);
2671 p2p->cfg->model_number = NULL;
2673 p2p->cfg->model_number = os_strdup(model_number);
2674 if (p2p->cfg->model_number == NULL)
2682 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2684 os_free(p2p->cfg->serial_number);
2685 p2p->cfg->serial_number = NULL;
2686 if (serial_number) {
2687 p2p->cfg->serial_number = os_strdup(serial_number);
2688 if (p2p->cfg->serial_number == NULL)
2696 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2698 p2p->cfg->config_methods = config_methods;
2702 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2704 os_memcpy(p2p->cfg->uuid, uuid, 16);
2708 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2710 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2715 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2716 size_t num_dev_types)
2718 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2719 num_dev_types = P2P_SEC_DEVICE_TYPES;
2720 p2p->cfg->num_sec_dev_types = num_dev_types;
2721 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2726 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2730 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2731 wpabuf_free(p2p->wps_vendor_ext[i]);
2732 p2p->wps_vendor_ext[i] = NULL;
2737 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2738 const struct wpabuf *vendor_ext)
2742 if (vendor_ext == NULL)
2745 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2746 if (p2p->wps_vendor_ext[i] == NULL)
2749 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2752 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2753 if (p2p->wps_vendor_ext[i] == NULL)
2760 int p2p_set_country(struct p2p_data *p2p, const char *country)
2762 os_memcpy(p2p->cfg->country, country, 3);
2767 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
2769 if (dev->sd_pending_bcast_queries == 0) {
2770 /* Initialize with total number of registered broadcast
2772 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
2775 if (p2p_start_sd(p2p, dev) == 0)
2778 if (dev->req_config_methods &&
2779 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2780 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2781 MACSTR " (config methods 0x%x)",
2782 MAC2STR(dev->info.p2p_device_addr),
2783 dev->req_config_methods);
2784 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2792 void p2p_continue_find(struct p2p_data *p2p)
2794 struct p2p_device *dev;
2797 p2p_set_state(p2p, P2P_SEARCH);
2799 /* Continue from the device following the last iteration */
2801 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2802 if (dev == p2p->last_p2p_find_oper) {
2808 if (p2p_pre_find_operation(p2p, dev) > 0) {
2809 p2p->last_p2p_find_oper = dev;
2815 * Wrap around to the beginning of the list and continue until the last
2818 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2819 if (p2p_pre_find_operation(p2p, dev) > 0) {
2820 p2p->last_p2p_find_oper = dev;
2823 if (dev == p2p->last_p2p_find_oper)
2827 p2p_listen_in_find(p2p, 1);
2831 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2833 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2835 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2839 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2840 p2p->sd_peer = NULL;
2841 p2p_continue_find(p2p);
2845 if (p2p->sd_peer == NULL) {
2846 p2p_dbg(p2p, "No SD peer entry known");
2847 p2p_continue_find(p2p);
2851 if (p2p->sd_query->for_all_peers) {
2852 /* Update the pending broadcast SD query count for this device
2854 p2p->sd_peer->sd_pending_bcast_queries--;
2857 * If there are no pending broadcast queries for this device,
2858 * mark it as done (-1).
2860 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
2861 p2p->sd_peer->sd_pending_bcast_queries = -1;
2864 /* Wait for response from the peer */
2865 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2866 p2p_set_timeout(p2p, 0, 200000);
2871 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2872 * @p2p: P2P module context from p2p_init()
2874 static void p2p_retry_pd(struct p2p_data *p2p)
2876 struct p2p_device *dev;
2878 if (p2p->state != P2P_IDLE)
2882 * Retry the prov disc req attempt only for the peer that the user had
2886 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2887 if (os_memcmp(p2p->pending_pd_devaddr,
2888 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2890 if (!dev->req_config_methods)
2893 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2894 MACSTR " (config methods 0x%x)",
2895 MAC2STR(dev->info.p2p_device_addr),
2896 dev->req_config_methods);
2897 p2p_send_prov_disc_req(p2p, dev,
2898 dev->flags & P2P_DEV_PD_FOR_JOIN,
2899 p2p->pd_force_freq);
2905 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2907 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2911 * Postpone resetting the pending action state till after we actually
2912 * time out. This allows us to take some action like notifying any
2913 * interested parties about no response to the request.
2915 * When the timer (below) goes off we check in IDLE, SEARCH, or
2916 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2917 * requests in, if this was still pending and then raise notification.
2921 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2923 if (p2p->user_initiated_pd &&
2924 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2926 /* Retry request from timeout to avoid busy loops */
2927 p2p->pending_action_state = P2P_PENDING_PD;
2928 p2p_set_timeout(p2p, 0, 50000);
2929 } else if (p2p->state != P2P_IDLE)
2930 p2p_continue_find(p2p);
2931 else if (p2p->user_initiated_pd) {
2932 p2p->pending_action_state = P2P_PENDING_PD;
2933 p2p_set_timeout(p2p, 0, 300000);
2939 * This postponing, of resetting pending_action_state, needs to be
2940 * done only for user initiated PD requests and not internal ones.
2942 if (p2p->user_initiated_pd)
2943 p2p->pending_action_state = P2P_PENDING_PD;
2945 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2947 /* Wait for response from the peer */
2948 if (p2p->state == P2P_SEARCH)
2949 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2950 p2p_set_timeout(p2p, 0, 200000);
2954 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2955 struct os_reltime *rx_time, int level, const u8 *ies,
2958 if (os_reltime_before(rx_time, &p2p->find_start)) {
2960 * The driver may have cached (e.g., in cfg80211 BSS table) the
2961 * scan results for relatively long time. To avoid reporting
2962 * stale information, update P2P peers only based on results
2963 * that have based on frames received after the last p2p_find
2964 * operation was started.
2966 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2967 " (rx_time=%u.%06u)",
2968 MAC2STR(bssid), (unsigned int) rx_time->sec,
2969 (unsigned int) rx_time->usec);
2973 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2979 void p2p_scan_res_handled(struct p2p_data *p2p)
2981 if (!p2p->p2p_scan_running) {
2982 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2984 p2p->p2p_scan_running = 0;
2985 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2987 if (p2p_run_after_scan(p2p))
2989 if (p2p->state == P2P_SEARCH)
2990 p2p_continue_find(p2p);
2994 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2998 #ifdef CONFIG_WIFI_DISPLAY
2999 if (p2p->wfd_ie_probe_req)
3000 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3001 #endif /* CONFIG_WIFI_DISPLAY */
3003 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3005 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3007 len = p2p_buf_add_ie_hdr(ies);
3008 p2p_buf_add_capability(ies, p2p->dev_capab &
3009 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
3011 p2p_buf_add_device_id(ies, dev_id);
3012 if (p2p->cfg->reg_class && p2p->cfg->channel)
3013 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3014 p2p->cfg->reg_class,
3016 if (p2p->ext_listen_interval)
3017 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3018 p2p->ext_listen_interval);
3019 /* TODO: p2p_buf_add_operating_channel() if GO */
3020 p2p_buf_update_ie_hdr(ies, len);
3024 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3028 #ifdef CONFIG_WIFI_DISPLAY
3029 if (p2p && p2p->wfd_ie_probe_req)
3030 len += wpabuf_len(p2p->wfd_ie_probe_req);
3031 #endif /* CONFIG_WIFI_DISPLAY */
3033 if (p2p && p2p->vendor_elem &&
3034 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3035 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3041 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3043 return p2p_attr_text(p2p_ie, buf, end);
3047 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3049 struct p2p_device *dev = p2p->go_neg_peer;
3052 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3055 p2p_dbg(p2p, "No pending GO Negotiation");
3060 if (dev->flags & P2P_DEV_USER_REJECTED) {
3061 p2p_set_state(p2p, P2P_IDLE);
3064 } else if (dev->go_neg_req_sent) {
3065 /* Cancel the increment from p2p_connect_send() on failure */
3066 dev->go_neg_req_sent--;
3070 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3071 !is_zero_ether_addr(dev->member_in_go_dev)) {
3072 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3073 MAC2STR(dev->info.p2p_device_addr));
3074 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3075 p2p_send_dev_disc_req(p2p, dev);
3080 * Use P2P find, if needed, to find the other device from its listen
3083 p2p_set_state(p2p, P2P_CONNECT);
3084 timeout = success ? 500000 : 100000;
3085 if (!success && p2p->go_neg_peer &&
3086 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3089 * Peer is expected to wait our response and we will skip the
3090 * listen phase. Add some randomness to the wait time here to
3091 * make it less likely to hit cases where we could end up in
3092 * sync with peer not listening.
3094 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3096 timeout += r % 100000;
3098 p2p_set_timeout(p2p, 0, timeout);
3102 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3104 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3106 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3107 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3110 p2p_set_state(p2p, P2P_CONNECT);
3111 p2p_set_timeout(p2p, 0, 500000);
3115 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3118 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3119 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3120 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3121 } else if (success) {
3122 struct p2p_device *dev;
3123 dev = p2p_get_device(p2p, addr);
3125 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3126 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3131 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3132 enum p2p_send_action_result result)
3134 struct p2p_device *dev;
3136 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3137 if (result == P2P_SEND_ACTION_FAILED) {
3138 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3139 p2p_go_neg_failed(p2p, -1);
3143 dev = p2p->go_neg_peer;
3145 if (result == P2P_SEND_ACTION_NO_ACK) {
3147 * Retry GO Negotiation Confirmation
3148 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3149 * ACK for confirmation.
3151 if (dev && dev->go_neg_conf &&
3152 dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3153 p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3154 dev->go_neg_conf_sent);
3155 p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3156 if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3157 dev->info.p2p_device_addr,
3159 dev->info.p2p_device_addr,
3160 wpabuf_head(dev->go_neg_conf),
3161 wpabuf_len(dev->go_neg_conf), 0) >=
3163 dev->go_neg_conf_sent++;
3166 p2p_dbg(p2p, "Failed to re-send Action frame");
3169 * Continue with the assumption that the first attempt
3170 * went through and just the ACK frame was lost.
3175 * It looks like the TX status for GO Negotiation Confirm is
3176 * often showing failure even when the peer has actually
3177 * received the frame. Since the peer may change channels
3178 * immediately after having received the frame, we may not see
3179 * an Ack for retries, so just dropping a single frame may
3180 * trigger this. To allow the group formation to succeed if the
3181 * peer did indeed receive the frame, continue regardless of
3184 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3187 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3192 p2p_go_complete(p2p, dev);
3196 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3197 const u8 *src, const u8 *bssid,
3198 enum p2p_send_action_result result)
3200 enum p2p_pending_action_state state;
3203 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3204 " src=" MACSTR " bssid=" MACSTR " result=%d",
3205 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3206 MAC2STR(bssid), result);
3207 success = result == P2P_SEND_ACTION_SUCCESS;
3208 state = p2p->pending_action_state;
3209 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3211 case P2P_NO_PENDING_ACTION:
3212 if (p2p->send_action_in_progress) {
3213 p2p->send_action_in_progress = 0;
3214 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3216 if (p2p->after_scan_tx_in_progress) {
3217 p2p->after_scan_tx_in_progress = 0;
3218 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3219 p2p_run_after_scan(p2p))
3221 if (p2p->state == P2P_SEARCH) {
3222 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3223 p2p_continue_find(p2p);
3227 case P2P_PENDING_GO_NEG_REQUEST:
3228 p2p_go_neg_req_cb(p2p, success);
3230 case P2P_PENDING_GO_NEG_RESPONSE:
3231 p2p_go_neg_resp_cb(p2p, success);
3233 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3234 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3236 case P2P_PENDING_GO_NEG_CONFIRM:
3237 p2p_go_neg_conf_cb(p2p, result);
3239 case P2P_PENDING_SD:
3240 p2p_sd_cb(p2p, success);
3242 case P2P_PENDING_PD:
3243 p2p_prov_disc_cb(p2p, success);
3245 case P2P_PENDING_INVITATION_REQUEST:
3246 p2p_invitation_req_cb(p2p, success);
3248 case P2P_PENDING_INVITATION_RESPONSE:
3249 p2p_invitation_resp_cb(p2p, success);
3251 case P2P_PENDING_DEV_DISC_REQUEST:
3252 p2p_dev_disc_req_cb(p2p, success);
3254 case P2P_PENDING_DEV_DISC_RESPONSE:
3255 p2p_dev_disc_resp_cb(p2p, success);
3257 case P2P_PENDING_GO_DISC_REQ:
3258 p2p_go_disc_req_cb(p2p, success);
3262 p2p->after_scan_tx_in_progress = 0;
3266 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3267 unsigned int duration)
3269 if (freq == p2p->pending_client_disc_freq) {
3270 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3271 p2p->pending_client_disc_freq = 0;
3275 if (freq != p2p->pending_listen_freq) {
3276 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3277 freq, duration, p2p->pending_listen_freq);
3281 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3282 p2p->pending_listen_sec, p2p->pending_listen_usec,
3283 p2p->pending_listen_freq);
3285 p2p->drv_in_listen = freq;
3286 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3288 * Add 20 msec extra wait to avoid race condition with driver
3289 * remain-on-channel end event, i.e., give driver more time to
3290 * complete the operation before our timeout expires.
3292 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3293 p2p->pending_listen_usec + 20000);
3296 p2p->pending_listen_freq = 0;
3300 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3302 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3303 p2p->drv_in_listen = 0;
3305 return 0; /* Internal timeout will trigger the next step */
3307 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3308 if (p2p->go_neg_peer->connect_reqs >= 120) {
3309 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3310 p2p_go_neg_failed(p2p, -1);
3314 p2p_set_state(p2p, P2P_CONNECT);
3315 p2p_connect_send(p2p, p2p->go_neg_peer);
3317 } else if (p2p->state == P2P_SEARCH) {
3318 if (p2p->p2p_scan_running) {
3320 * Search is already in progress. This can happen if
3321 * an Action frame RX is reported immediately after
3322 * the end of a remain-on-channel operation and the
3323 * response frame to that is sent using an offchannel
3324 * operation while in p2p_find. Avoid an attempt to
3325 * restart a scan here.
3327 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3330 if (p2p->pending_listen_freq) {
3332 * Better wait a bit if the driver is unable to start
3333 * offchannel operation for some reason. p2p_search()
3334 * will be started from internal timeout.
3336 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3337 p2p_set_timeout(p2p, 0, 100000);
3340 if (p2p->search_delay) {
3341 p2p_dbg(p2p, "Delay search operation by %u ms",
3343 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3344 (p2p->search_delay % 1000) * 1000);
3355 static void p2p_timeout_connect(struct p2p_data *p2p)
3357 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3358 if (p2p->go_neg_peer &&
3359 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3360 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3361 p2p_go_neg_failed(p2p, -1);
3364 if (p2p->go_neg_peer &&
3365 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3366 p2p->go_neg_peer->connect_reqs < 120) {
3367 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3368 p2p_connect_send(p2p, p2p->go_neg_peer);
3371 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3372 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3373 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3374 p2p_set_timeout(p2p, 0, 30000);
3377 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3378 p2p_listen_in_find(p2p, 0);
3382 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3384 if (p2p->go_neg_peer) {
3385 if (p2p->drv_in_listen) {
3386 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3390 if (p2p->go_neg_peer->connect_reqs >= 120) {
3391 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3392 p2p_go_neg_failed(p2p, -1);
3396 p2p_set_state(p2p, P2P_CONNECT);
3397 p2p_connect_send(p2p, p2p->go_neg_peer);
3399 p2p_set_state(p2p, P2P_IDLE);
3403 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3405 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3407 if (p2p->cfg->is_concurrent_session_active &&
3408 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3409 p2p_set_timeout(p2p, 0, 500000);
3411 p2p_set_timeout(p2p, 0, 200000);
3415 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3417 struct p2p_device *dev = p2p->go_neg_peer;
3420 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3424 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3425 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3426 p2p_listen_in_find(p2p, 0);
3430 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3432 p2p_dbg(p2p, "Service Discovery Query timeout");
3434 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3435 p2p->sd_peer = NULL;
3437 p2p_continue_find(p2p);
3441 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3443 p2p_dbg(p2p, "Provision Discovery Request timeout");
3444 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3445 p2p_continue_find(p2p);
3449 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3451 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3454 * For user initiated PD requests that we have not gotten any responses
3455 * for while in IDLE state, we retry them a couple of times before
3458 if (!p2p->user_initiated_pd)
3461 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3463 if (p2p->pd_retries) {
3467 struct p2p_device *dev;
3470 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3471 if (os_memcmp(p2p->pending_pd_devaddr,
3472 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3474 if (dev->req_config_methods &&
3475 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3479 if (p2p->cfg->prov_disc_fail)
3480 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3481 p2p->pending_pd_devaddr,
3483 P2P_PROV_DISC_TIMEOUT_JOIN :
3484 P2P_PROV_DISC_TIMEOUT);
3485 p2p_reset_pending_pd(p2p);
3490 static void p2p_timeout_invite(struct p2p_data *p2p)
3492 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3493 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3494 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3496 * Better remain on operating channel instead of listen channel
3497 * when running a group.
3499 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3500 p2p_set_timeout(p2p, 0, 100000);
3503 p2p_listen_in_find(p2p, 0);
3507 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3509 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3510 p2p_set_state(p2p, P2P_INVITE);
3511 p2p_invite_send(p2p, p2p->invite_peer,
3512 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3514 if (p2p->invite_peer) {
3515 p2p_dbg(p2p, "Invitation Request retry limit reached");
3516 if (p2p->cfg->invitation_result)
3517 p2p->cfg->invitation_result(
3518 p2p->cfg->cb_ctx, -1, NULL, NULL,
3519 p2p->invite_peer->info.p2p_device_addr,
3522 p2p_set_state(p2p, P2P_IDLE);
3527 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3529 struct p2p_data *p2p = eloop_ctx;
3531 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3534 if (p2p->drv_in_listen) {
3535 p2p_dbg(p2p, "Driver is still in listen state - stop it");
3536 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
3539 switch (p2p->state) {
3541 /* Check if we timed out waiting for PD req */
3542 if (p2p->pending_action_state == P2P_PENDING_PD)
3543 p2p_timeout_prov_disc_req(p2p);
3546 /* Check if we timed out waiting for PD req */
3547 if (p2p->pending_action_state == P2P_PENDING_PD)
3548 p2p_timeout_prov_disc_req(p2p);
3549 if (p2p->search_delay && !p2p->in_search_delay) {
3550 p2p_dbg(p2p, "Delay search operation by %u ms",
3552 p2p->in_search_delay = 1;
3553 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3554 (p2p->search_delay % 1000) * 1000);
3557 p2p->in_search_delay = 0;
3561 p2p_timeout_connect(p2p);
3563 case P2P_CONNECT_LISTEN:
3564 p2p_timeout_connect_listen(p2p);
3568 case P2P_LISTEN_ONLY:
3569 /* Check if we timed out waiting for PD req */
3570 if (p2p->pending_action_state == P2P_PENDING_PD)
3571 p2p_timeout_prov_disc_req(p2p);
3573 if (p2p->ext_listen_only) {
3574 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3575 p2p->ext_listen_only = 0;
3576 p2p_set_state(p2p, P2P_IDLE);
3579 case P2P_WAIT_PEER_CONNECT:
3580 p2p_timeout_wait_peer_connect(p2p);
3582 case P2P_WAIT_PEER_IDLE:
3583 p2p_timeout_wait_peer_idle(p2p);
3585 case P2P_SD_DURING_FIND:
3586 p2p_timeout_sd_during_find(p2p);
3588 case P2P_PROVISIONING:
3590 case P2P_PD_DURING_FIND:
3591 p2p_timeout_prov_disc_during_find(p2p);
3594 p2p_timeout_invite(p2p);
3596 case P2P_INVITE_LISTEN:
3597 p2p_timeout_invite_listen(p2p);
3603 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3605 struct p2p_device *dev;
3607 dev = p2p_get_device(p2p, peer_addr);
3608 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3609 MACSTR, MAC2STR(peer_addr));
3611 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3614 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3615 dev->flags |= P2P_DEV_USER_REJECTED;
3620 const char * p2p_wps_method_text(enum p2p_wps_method method)
3625 case WPS_PIN_DISPLAY:
3627 case WPS_PIN_KEYPAD:
3639 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3654 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3655 const u8 *addr, int next)
3657 struct p2p_device *dev;
3660 dev = p2p_get_device(p2p, addr);
3662 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3665 dev = dl_list_first(&dev->list, struct p2p_device, list);
3666 if (&dev->list == &p2p->devices)
3677 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3678 char *buf, size_t buflen)
3680 struct p2p_device *dev;
3683 struct os_reltime now;
3688 dev = (struct p2p_device *) (((u8 *) info) -
3689 offsetof(struct p2p_device, info));
3694 os_get_reltime(&now);
3695 res = os_snprintf(pos, end - pos,
3699 "interface_addr=" MACSTR "\n"
3700 "member_in_go_dev=" MACSTR "\n"
3701 "member_in_go_iface=" MACSTR "\n"
3702 "go_neg_req_sent=%d\n"
3705 "intended_addr=" MACSTR "\n"
3708 "req_config_methods=0x%x\n"
3709 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3711 "invitation_reqs=%u\n",
3712 (int) (now.sec - dev->last_seen.sec),
3714 p2p_wps_method_text(dev->wps_method),
3715 MAC2STR(dev->interface_addr),
3716 MAC2STR(dev->member_in_go_dev),
3717 MAC2STR(dev->member_in_go_iface),
3718 dev->go_neg_req_sent,
3719 p2p_go_state_text(dev->go_state),
3721 MAC2STR(dev->intended_addr),
3722 dev->country[0] ? dev->country[0] : '_',
3723 dev->country[1] ? dev->country[1] : '_',
3725 dev->req_config_methods,
3726 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3727 "[PROBE_REQ_ONLY]" : "",
3728 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3729 dev->flags & P2P_DEV_NOT_YET_READY ?
3730 "[NOT_YET_READY]" : "",
3731 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3732 "[PD_PEER_DISPLAY]" : "",
3733 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3734 "[PD_PEER_KEYPAD]" : "",
3735 dev->flags & P2P_DEV_USER_REJECTED ?
3736 "[USER_REJECTED]" : "",
3737 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3738 "[PEER_WAITING_RESPONSE]" : "",
3739 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3740 "[PREFER_PERSISTENT_GROUP]" : "",
3741 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3742 "[WAIT_GO_NEG_RESPONSE]" : "",
3743 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3744 "[WAIT_GO_NEG_CONFIRM]" : "",
3745 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3746 "[GROUP_CLIENT_ONLY]" : "",
3747 dev->flags & P2P_DEV_FORCE_FREQ ?
3748 "[FORCE_FREQ]" : "",
3749 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3750 "[PD_FOR_JOIN]" : "",
3752 dev->invitation_reqs);
3753 if (res < 0 || res >= end - pos)
3757 if (dev->ext_listen_period) {
3758 res = os_snprintf(pos, end - pos,
3759 "ext_listen_period=%u\n"
3760 "ext_listen_interval=%u\n",
3761 dev->ext_listen_period,
3762 dev->ext_listen_interval);
3763 if (res < 0 || res >= end - pos)
3768 if (dev->oper_ssid_len) {
3769 res = os_snprintf(pos, end - pos,
3771 wpa_ssid_txt(dev->oper_ssid,
3772 dev->oper_ssid_len));
3773 if (res < 0 || res >= end - pos)
3778 #ifdef CONFIG_WIFI_DISPLAY
3779 if (dev->info.wfd_subelems) {
3780 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3781 if (res < 0 || res >= end - pos)
3785 pos += wpa_snprintf_hex(pos, end - pos,
3786 wpabuf_head(dev->info.wfd_subelems),
3787 wpabuf_len(dev->info.wfd_subelems));
3789 res = os_snprintf(pos, end - pos, "\n");
3790 if (res < 0 || res >= end - pos)
3794 #endif /* CONFIG_WIFI_DISPLAY */
3800 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3802 return p2p_get_device(p2p, addr) != NULL;
3806 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3809 p2p_dbg(p2p, "Client discoverability enabled");
3810 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3812 p2p_dbg(p2p, "Client discoverability disabled");
3813 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3818 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3819 u32 duration2, u32 interval2)
3822 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3825 req = wpabuf_alloc(100);
3829 if (duration1 || interval1) {
3830 os_memset(&desc1, 0, sizeof(desc1));
3831 desc1.count_type = 1;
3832 desc1.duration = duration1;
3833 desc1.interval = interval1;
3836 if (duration2 || interval2) {
3837 os_memset(&desc2, 0, sizeof(desc2));
3838 desc2.count_type = 2;
3839 desc2.duration = duration2;
3840 desc2.interval = interval2;
3845 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3846 len = p2p_buf_add_ie_hdr(req);
3847 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3848 p2p_buf_update_ie_hdr(req, len);
3854 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3855 const u8 *own_interface_addr, unsigned int freq,
3856 u32 duration1, u32 interval1, u32 duration2,
3861 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3862 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3864 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3865 freq, duration1, interval1, duration2, interval2);
3867 req = p2p_build_presence_req(duration1, interval1, duration2,
3872 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3873 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3875 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3876 p2p_dbg(p2p, "Failed to send Action frame");
3884 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3885 size_t noa_len, u8 dialog_token)
3887 struct wpabuf *resp;
3890 resp = wpabuf_alloc(100 + noa_len);
3894 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3895 len = p2p_buf_add_ie_hdr(resp);
3896 p2p_buf_add_status(resp, status);
3898 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3899 wpabuf_put_le16(resp, noa_len);
3900 wpabuf_put_data(resp, noa, noa_len);
3902 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3903 p2p_buf_update_ie_hdr(resp, len);
3909 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3910 const u8 *sa, const u8 *data, size_t len,
3913 struct p2p_message msg;
3915 struct wpabuf *resp;
3917 struct p2p_group *group = NULL;
3922 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3924 for (g = 0; g < p2p->num_groups; g++) {
3925 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3927 group = p2p->groups[g];
3931 if (group == NULL) {
3932 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3933 MACSTR, MAC2STR(da));
3937 if (p2p_parse(data, len, &msg) < 0) {
3938 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3939 status = P2P_SC_FAIL_INVALID_PARAMS;
3944 if (msg.noa == NULL) {
3945 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3946 status = P2P_SC_FAIL_INVALID_PARAMS;
3950 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3953 if (p2p->cfg->get_noa)
3954 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3958 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3959 noa_len > 0 ? noa_len : 0,
3962 p2p_parse_free(&msg);
3966 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3967 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3968 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3969 p2p_dbg(p2p, "Failed to send Action frame");
3975 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3976 const u8 *sa, const u8 *data, size_t len)
3978 struct p2p_message msg;
3980 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3982 if (p2p_parse(data, len, &msg) < 0) {
3983 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3987 if (msg.status == NULL || msg.noa == NULL) {
3988 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3989 p2p_parse_free(&msg);
3993 if (p2p->cfg->presence_resp) {
3994 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3995 msg.noa, msg.noa_len);
3999 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4001 p2p_parse_free(&msg);
4005 p2p_dbg(p2p, "P2P Presence Request was accepted");
4006 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4007 msg.noa, msg.noa_len);
4008 /* TODO: process NoA */
4009 p2p_parse_free(&msg);
4013 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4015 struct p2p_data *p2p = eloop_ctx;
4017 if (p2p->ext_listen_interval) {
4018 /* Schedule next extended listen timeout */
4019 eloop_register_timeout(p2p->ext_listen_interval_sec,
4020 p2p->ext_listen_interval_usec,
4021 p2p_ext_listen_timeout, p2p, NULL);
4024 if ((p2p->cfg->is_p2p_in_progress &&
4025 p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4026 (p2p->pending_action_state == P2P_PENDING_PD &&
4027 p2p->pd_retries > 0)) {
4028 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4029 p2p_state_txt(p2p->state));
4033 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4035 * This should not really happen, but it looks like the Listen
4036 * command may fail is something else (e.g., a scan) was
4037 * running at an inconvenient time. As a workaround, allow new
4038 * Extended Listen operation to be started.
4040 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4041 p2p->ext_listen_only = 0;
4042 p2p_set_state(p2p, P2P_IDLE);
4045 if (p2p->state != P2P_IDLE) {
4046 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4050 p2p_dbg(p2p, "Extended Listen timeout");
4051 p2p->ext_listen_only = 1;
4052 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4053 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4054 p2p->ext_listen_only = 0;
4059 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4060 unsigned int interval)
4062 if (period > 65535 || interval > 65535 || period > interval ||
4063 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4064 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4069 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4071 if (interval == 0) {
4072 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4073 p2p->ext_listen_period = 0;
4074 p2p->ext_listen_interval = 0;
4078 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4080 p2p->ext_listen_period = period;
4081 p2p->ext_listen_interval = interval;
4082 p2p->ext_listen_interval_sec = interval / 1000;
4083 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4085 eloop_register_timeout(p2p->ext_listen_interval_sec,
4086 p2p->ext_listen_interval_usec,
4087 p2p_ext_listen_timeout, p2p, NULL);
4093 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4094 const u8 *ie, size_t ie_len)
4096 struct p2p_message msg;
4098 if (bssid == NULL || ie == NULL)
4101 os_memset(&msg, 0, sizeof(msg));
4102 if (p2p_parse_ies(ie, ie_len, &msg))
4104 if (msg.minor_reason_code == NULL) {
4105 p2p_parse_free(&msg);
4109 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4110 " reason_code=%u minor_reason_code=%u",
4111 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4113 p2p_parse_free(&msg);
4117 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4118 const u8 *ie, size_t ie_len)
4120 struct p2p_message msg;
4122 if (bssid == NULL || ie == NULL)
4125 os_memset(&msg, 0, sizeof(msg));
4126 if (p2p_parse_ies(ie, ie_len, &msg))
4128 if (msg.minor_reason_code == NULL) {
4129 p2p_parse_free(&msg);
4133 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4134 " reason_code=%u minor_reason_code=%u",
4135 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4137 p2p_parse_free(&msg);
4141 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4144 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4145 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4147 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4148 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4153 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4156 return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4160 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4163 if (p2p_channel_to_freq(reg_class, channel) < 0)
4166 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4167 reg_class, channel);
4170 * Listen channel was set in configuration or set by control interface;
4171 * cannot override it.
4173 if (p2p->cfg->channel_forced && forced == 0)
4176 if (p2p->state == P2P_IDLE) {
4177 p2p->cfg->reg_class = reg_class;
4178 p2p->cfg->channel = channel;
4179 p2p->cfg->channel_forced = forced;
4181 p2p_dbg(p2p, "Defer setting listen channel");
4182 p2p->pending_reg_class = reg_class;
4183 p2p->pending_channel = channel;
4184 p2p->pending_channel_forced = forced;
4191 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4193 return p2p->cfg->channel;
4197 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4199 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4200 if (postfix == NULL) {
4201 p2p->cfg->ssid_postfix_len = 0;
4204 if (len > sizeof(p2p->cfg->ssid_postfix))
4206 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4207 p2p->cfg->ssid_postfix_len = len;
4212 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4215 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4218 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4219 op_reg_class, op_channel);
4220 p2p->cfg->op_reg_class = op_reg_class;
4221 p2p->cfg->op_channel = op_channel;
4222 p2p->cfg->cfg_op_channel = cfg_op_channel;
4227 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4228 const struct p2p_channel *pref_chan)
4230 struct p2p_channel *n;
4233 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4236 os_memcpy(n, pref_chan,
4237 num_pref_chan * sizeof(struct p2p_channel));
4241 os_free(p2p->cfg->pref_chan);
4242 p2p->cfg->pref_chan = n;
4243 p2p->cfg->num_pref_chan = num_pref_chan;
4249 int p2p_set_no_go_freq(struct p2p_data *p2p,
4250 const struct wpa_freq_range_list *list)
4252 struct wpa_freq_range *tmp;
4254 if (list == NULL || list->num == 0) {
4255 os_free(p2p->no_go_freq.range);
4256 p2p->no_go_freq.range = NULL;
4257 p2p->no_go_freq.num = 0;
4261 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4264 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4265 os_free(p2p->no_go_freq.range);
4266 p2p->no_go_freq.range = tmp;
4267 p2p->no_go_freq.num = list->num;
4268 p2p_dbg(p2p, "Updated no GO chan list");
4274 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4277 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4278 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4280 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4285 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4288 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4291 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4296 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4298 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4299 if (is_zero_ether_addr(p2p->peer_filter))
4300 p2p_dbg(p2p, "Disable peer filter");
4302 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4303 MAC2STR(p2p->peer_filter));
4307 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4309 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4310 if (p2p->cross_connect == enabled)
4312 p2p->cross_connect = enabled;
4313 /* TODO: may need to tear down any action group where we are GO(?) */
4317 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4319 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4322 if (dev->oper_freq <= 0)
4324 return dev->oper_freq;
4328 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4330 p2p_dbg(p2p, "Intra BSS distribution %s",
4331 enabled ? "enabled" : "disabled");
4332 p2p->cfg->p2p_intra_bss = enabled;
4336 void p2p_update_channel_list(struct p2p_data *p2p,
4337 const struct p2p_channels *chan,
4338 const struct p2p_channels *cli_chan)
4340 p2p_dbg(p2p, "Update channel list");
4341 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4342 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4343 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4344 sizeof(struct p2p_channels));
4345 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4349 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4350 const u8 *src, const u8 *bssid, const u8 *buf,
4351 size_t len, unsigned int wait_time)
4353 if (p2p->p2p_scan_running) {
4354 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4355 if (p2p->after_scan_tx) {
4356 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4357 os_free(p2p->after_scan_tx);
4359 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4361 if (p2p->after_scan_tx == NULL)
4363 p2p->after_scan_tx->freq = freq;
4364 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4365 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4366 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4367 p2p->after_scan_tx->len = len;
4368 p2p->after_scan_tx->wait_time = wait_time;
4369 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4373 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4374 buf, len, wait_time);
4378 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4381 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4382 freq_24, freq_5, freq_overall);
4383 p2p->best_freq_24 = freq_24;
4384 p2p->best_freq_5 = freq_5;
4385 p2p->best_freq_overall = freq_overall;
4389 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4391 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4392 p2p->own_freq_preference = freq;
4396 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4398 if (p2p == NULL || p2p->go_neg_peer == NULL)
4400 return p2p->go_neg_peer->info.p2p_device_addr;
4404 const struct p2p_peer_info *
4405 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4407 struct p2p_device *dev;
4410 dev = p2p_get_device(p2p, addr);
4415 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4421 dev = dl_list_first(&dev->list,
4424 if (!dev || &dev->list == &p2p->devices)
4426 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4429 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4432 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4433 dev = dl_list_first(&dev->list,
4436 if (!dev || &dev->list == &p2p->devices)
4445 int p2p_in_progress(struct p2p_data *p2p)
4449 if (p2p->state == P2P_SEARCH)
4451 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4455 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4459 p2p->go_timeout = go_timeout;
4460 p2p->client_timeout = client_timeout;
4465 #ifdef CONFIG_WIFI_DISPLAY
4467 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4470 struct p2p_group *group;
4472 for (g = 0; g < p2p->num_groups; g++) {
4473 group = p2p->groups[g];
4474 p2p_group_force_beacon_update_ies(group);
4479 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4481 wpabuf_free(p2p->wfd_ie_beacon);
4482 p2p->wfd_ie_beacon = ie;
4483 p2p_update_wfd_ie_groups(p2p);
4488 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4490 wpabuf_free(p2p->wfd_ie_probe_req);
4491 p2p->wfd_ie_probe_req = ie;
4496 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4498 wpabuf_free(p2p->wfd_ie_probe_resp);
4499 p2p->wfd_ie_probe_resp = ie;
4500 p2p_update_wfd_ie_groups(p2p);
4505 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4507 wpabuf_free(p2p->wfd_ie_assoc_req);
4508 p2p->wfd_ie_assoc_req = ie;
4513 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4515 wpabuf_free(p2p->wfd_ie_invitation);
4516 p2p->wfd_ie_invitation = ie;
4521 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4523 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4524 p2p->wfd_ie_prov_disc_req = ie;
4529 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4531 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4532 p2p->wfd_ie_prov_disc_resp = ie;
4537 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4539 wpabuf_free(p2p->wfd_ie_go_neg);
4540 p2p->wfd_ie_go_neg = ie;
4545 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4547 wpabuf_free(p2p->wfd_dev_info);
4549 p2p->wfd_dev_info = wpabuf_dup(elem);
4550 if (p2p->wfd_dev_info == NULL)
4553 p2p->wfd_dev_info = NULL;
4559 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4561 wpabuf_free(p2p->wfd_assoc_bssid);
4563 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4564 if (p2p->wfd_assoc_bssid == NULL)
4567 p2p->wfd_assoc_bssid = NULL;
4573 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4574 const struct wpabuf *elem)
4576 wpabuf_free(p2p->wfd_coupled_sink_info);
4578 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4579 if (p2p->wfd_coupled_sink_info == NULL)
4582 p2p->wfd_coupled_sink_info = NULL;
4587 #endif /* CONFIG_WIFI_DISPLAY */
4590 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4593 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4596 p2p->min_disc_int = min_disc_int;
4597 p2p->max_disc_int = max_disc_int;
4598 p2p->max_disc_tu = max_disc_tu;
4599 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4600 min_disc_int, max_disc_int, max_disc_tu);
4606 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4611 if (!p2p->cfg->debug_print)
4615 vsnprintf(buf, sizeof(buf), fmt, ap);
4616 buf[sizeof(buf) - 1] = '\0';
4618 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4622 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4627 if (!p2p->cfg->debug_print)
4631 vsnprintf(buf, sizeof(buf), fmt, ap);
4632 buf[sizeof(buf) - 1] = '\0';
4634 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4638 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4643 if (!p2p->cfg->debug_print)
4647 vsnprintf(buf, sizeof(buf), fmt, ap);
4648 buf[sizeof(buf) - 1] = '\0';
4650 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4654 void p2p_loop_on_known_peers(struct p2p_data *p2p,
4655 void (*peer_callback)(struct p2p_peer_info *peer,
4659 struct p2p_device *dev, *n;
4661 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
4662 peer_callback(&dev->info, user_data);
4667 #ifdef CONFIG_WPS_NFC
4669 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4671 const u8 *go_dev_addr,
4672 const u8 *ssid, size_t ssid_len)
4675 u8 op_class, channel;
4676 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4678 buf = wpabuf_alloc(1000);
4682 op_class = p2p->cfg->reg_class;
4683 channel = p2p->cfg->channel;
4685 p2p_buf_add_capability(buf, p2p->dev_capab &
4686 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4687 p2p_buf_add_device_info(buf, p2p, NULL);
4689 if (p2p->num_groups > 0) {
4690 int freq = p2p_group_get_freq(p2p->groups[0]);
4691 role = P2P_GO_IN_A_GROUP;
4692 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
4694 "Unknown GO operating frequency %d MHz for NFC handover",
4699 } else if (client_freq > 0) {
4700 role = P2P_CLIENT_IN_A_GROUP;
4701 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
4703 "Unknown client operating frequency %d MHz for NFC handover",
4710 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4713 if (p2p->num_groups > 0) {
4714 /* Limit number of clients to avoid very long message */
4715 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4716 p2p_group_buf_add_id(p2p->groups[0], buf);
4717 } else if (client_freq > 0 &&
4718 go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
4719 ssid && ssid_len > 0) {
4721 * Add the optional P2P Group ID to indicate in which group this
4722 * device is a P2P Client.
4724 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
4731 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4733 const u8 *go_dev_addr,
4734 const u8 *ssid, size_t ssid_len)
4736 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4741 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4743 const u8 *go_dev_addr,
4744 const u8 *ssid, size_t ssid_len)
4746 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4751 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4752 struct p2p_nfc_params *params)
4754 struct p2p_message msg;
4755 struct p2p_device *dev;
4756 const u8 *p2p_dev_addr;
4758 enum p2p_role_indication role;
4760 params->next_step = NO_ACTION;
4762 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4763 params->p2p_attr, params->p2p_len, &msg)) {
4764 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4765 p2p_parse_free(&msg);
4769 if (msg.p2p_device_addr)
4770 p2p_dev_addr = msg.p2p_device_addr;
4771 else if (msg.device_id)
4772 p2p_dev_addr = msg.device_id;
4774 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4775 p2p_parse_free(&msg);
4779 if (msg.oob_dev_password) {
4780 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4781 msg.oob_dev_password_len);
4782 params->oob_dev_pw_len = msg.oob_dev_password_len;
4785 dev = p2p_create_device(p2p, p2p_dev_addr);
4787 p2p_parse_free(&msg);
4791 params->peer = &dev->info;
4793 os_get_reltime(&dev->last_seen);
4794 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4795 p2p_copy_wps_info(p2p, dev, 0, &msg);
4797 if (!msg.oob_go_neg_channel) {
4798 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4802 if (msg.oob_go_neg_channel[3] == 0 &&
4803 msg.oob_go_neg_channel[4] == 0)
4806 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4807 msg.oob_go_neg_channel[4]);
4809 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4812 role = msg.oob_go_neg_channel[5];
4814 if (role == P2P_GO_IN_A_GROUP) {
4815 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
4816 params->go_freq = freq;
4817 } else if (role == P2P_CLIENT_IN_A_GROUP) {
4818 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
4820 params->go_freq = freq;
4822 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4823 dev->oob_go_neg_freq = freq;
4825 if (!params->sel && role != P2P_GO_IN_A_GROUP) {
4826 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4829 p2p_dbg(p2p, "Own listen channel not known");
4832 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4833 dev->oob_go_neg_freq = freq;
4837 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
4838 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
4839 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
4840 params->go_ssid_len);
4843 if (dev->flags & P2P_DEV_USER_REJECTED) {
4844 p2p_dbg(p2p, "Do not report rejected device");
4845 p2p_parse_free(&msg);
4849 if (!(dev->flags & P2P_DEV_REPORTED)) {
4850 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4851 !(dev->flags & P2P_DEV_REPORTED_ONCE));
4852 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4854 p2p_parse_free(&msg);
4856 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
4857 params->next_step = BOTH_GO;
4858 else if (role == P2P_GO_IN_A_GROUP)
4859 params->next_step = JOIN_GROUP;
4860 else if (role == P2P_CLIENT_IN_A_GROUP) {
4861 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4862 params->next_step = PEER_CLIENT;
4863 } else if (p2p->num_groups > 0)
4864 params->next_step = AUTH_JOIN;
4865 else if (params->sel)
4866 params->next_step = INIT_GO_NEG;
4868 params->next_step = RESP_GO_NEG;
4874 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4876 const u8 *own_interface_addr)
4879 p2p->authorized_oob_dev_pw_id = dev_pw_id;
4880 if (dev_pw_id == 0) {
4881 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4885 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4888 p2p->go_intent = go_intent;
4889 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4892 #endif /* CONFIG_WPS_NFC */
4895 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
4897 if (len < 8 || len > 63)
4899 p2p->cfg->passphrase_len = len;
4904 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
4906 p2p->vendor_elem = vendor_elem;
4910 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
4912 struct p2p_data *p2p = eloop_ctx;
4915 "Timeout on waiting peer to become ready for GO Negotiation");
4916 p2p_go_neg_failed(p2p, -1);