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 "crypto/sha256.h"
17 #include "crypto/crypto.h"
18 #include "wps/wps_i.h"
23 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
24 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
25 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
26 const u8 *sa, const u8 *data, size_t len,
28 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
29 const u8 *sa, const u8 *data,
31 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
32 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
36 * p2p_scan recovery timeout
38 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
39 * timeout for this to avoid hitting P2P timeout unnecessarily.
41 #define P2P_SCAN_TIMEOUT 35
44 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
45 * entries will be removed
47 #ifndef P2P_PEER_EXPIRATION_AGE
48 #define P2P_PEER_EXPIRATION_AGE 60
49 #endif /* P2P_PEER_EXPIRATION_AGE */
51 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
53 static void p2p_expire_peers(struct p2p_data *p2p)
55 struct p2p_device *dev, *n;
56 struct os_reltime now;
60 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
61 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
64 if (dev == p2p->go_neg_peer) {
66 * GO Negotiation is in progress with the peer, so
67 * don't expire the peer entry until GO Negotiation
73 if (p2p->cfg->go_connected &&
74 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
75 dev->info.p2p_device_addr)) {
77 * We are connected as a client to a group in which the
78 * peer is the GO, so do not expire the peer entry.
80 os_get_reltime(&dev->last_seen);
84 for (i = 0; i < p2p->num_groups; i++) {
85 if (p2p_group_is_client_connected(
86 p2p->groups[i], dev->info.p2p_device_addr))
89 if (i < p2p->num_groups) {
91 * The peer is connected as a client in a group where
92 * we are the GO, so do not expire the peer entry.
94 os_get_reltime(&dev->last_seen);
98 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
99 MAC2STR(dev->info.p2p_device_addr));
100 dl_list_del(&dev->list);
101 p2p_device_free(p2p, dev);
106 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
108 struct p2p_data *p2p = eloop_ctx;
109 p2p_expire_peers(p2p);
110 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
111 p2p_expiration_timeout, p2p, NULL);
115 static const char * p2p_state_txt(int state)
124 case P2P_CONNECT_LISTEN:
125 return "CONNECT_LISTEN";
128 case P2P_LISTEN_ONLY:
129 return "LISTEN_ONLY";
130 case P2P_WAIT_PEER_CONNECT:
131 return "WAIT_PEER_CONNECT";
132 case P2P_WAIT_PEER_IDLE:
133 return "WAIT_PEER_IDLE";
134 case P2P_SD_DURING_FIND:
135 return "SD_DURING_FIND";
136 case P2P_PROVISIONING:
137 return "PROVISIONING";
138 case P2P_PD_DURING_FIND:
139 return "PD_DURING_FIND";
142 case P2P_INVITE_LISTEN:
143 return "INVITE_LISTEN";
150 const char * p2p_get_state_txt(struct p2p_data *p2p)
152 return p2p_state_txt(p2p->state);
156 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p)
158 return p2p ? p2p->p2ps_adv_list : NULL;
162 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr)
164 if (p2p && intended_addr)
165 os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN);
169 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
171 struct p2p_device *dev = NULL;
176 dev = p2p_get_device(p2p, addr);
178 return dev->wps_prov_info;
184 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
186 struct p2p_device *dev = NULL;
191 dev = p2p_get_device(p2p, addr);
193 dev->wps_prov_info = 0;
197 void p2p_set_state(struct p2p_data *p2p, int new_state)
199 p2p_dbg(p2p, "State %s -> %s",
200 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
201 p2p->state = new_state;
203 if (new_state == P2P_IDLE && p2p->pending_channel) {
204 p2p_dbg(p2p, "Apply change in listen channel");
205 p2p->cfg->reg_class = p2p->pending_reg_class;
206 p2p->cfg->channel = p2p->pending_channel;
207 p2p->pending_reg_class = 0;
208 p2p->pending_channel = 0;
213 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
215 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
216 p2p_state_txt(p2p->state), sec, usec);
217 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
218 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
222 void p2p_clear_timeout(struct p2p_data *p2p)
224 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
225 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
229 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
231 struct p2p_go_neg_results res;
232 struct p2p_device *peer = p2p->go_neg_peer;
237 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
238 if (p2p->state != P2P_SEARCH) {
240 * Clear timeouts related to GO Negotiation if no new p2p_find
243 p2p_clear_timeout(p2p);
244 p2p_set_state(p2p, P2P_IDLE);
247 peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
248 peer->wps_method = WPS_NOT_READY;
250 wpabuf_free(peer->go_neg_conf);
251 peer->go_neg_conf = NULL;
252 p2p->go_neg_peer = NULL;
254 os_memset(&res, 0, sizeof(res));
256 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
257 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
258 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
262 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
268 p2p_dbg(p2p, "Starting short listen state (state=%s)",
269 p2p_state_txt(p2p->state));
271 if (p2p->pending_listen_freq) {
272 /* We have a pending p2p_listen request */
273 p2p_dbg(p2p, "p2p_listen command pending already");
277 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
279 p2p_dbg(p2p, "Unknown regulatory class/channel");
283 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
285 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
286 p2p->min_disc_int) * 100;
287 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
288 tu = p2p->max_disc_tu;
289 if (!dev_disc && tu < 100)
290 tu = 100; /* Need to wait in non-device discovery use cases */
291 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
292 tu = p2p->cfg->max_listen * 1000 / 1024;
295 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
296 p2p_set_timeout(p2p, 0, 0);
300 ies = p2p_build_probe_resp_ies(p2p);
304 p2p->pending_listen_freq = freq;
305 p2p->pending_listen_sec = 0;
306 p2p->pending_listen_usec = 1024 * tu;
308 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
310 p2p_dbg(p2p, "Failed to start listen mode");
311 p2p->pending_listen_freq = 0;
317 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
322 p2p_dbg(p2p, "Going to listen(only) state");
324 if (p2p->pending_listen_freq) {
325 /* We have a pending p2p_listen request */
326 p2p_dbg(p2p, "p2p_listen command pending already");
330 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
332 p2p_dbg(p2p, "Unknown regulatory class/channel");
336 p2p->pending_listen_sec = timeout / 1000;
337 p2p->pending_listen_usec = (timeout % 1000) * 1000;
339 if (p2p->p2p_scan_running) {
340 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
341 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
344 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
345 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
349 ies = p2p_build_probe_resp_ies(p2p);
353 p2p->pending_listen_freq = freq;
355 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
356 p2p_dbg(p2p, "Failed to start listen mode");
357 p2p->pending_listen_freq = 0;
363 p2p_set_state(p2p, P2P_LISTEN_ONLY);
369 static void p2p_device_clear_reported(struct p2p_data *p2p)
371 struct p2p_device *dev;
372 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
373 dev->flags &= ~P2P_DEV_REPORTED;
380 * p2p_get_device - Fetch a peer entry
381 * @p2p: P2P module context from p2p_init()
382 * @addr: P2P Device Address of the peer
383 * Returns: Pointer to the device entry or %NULL if not found
385 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
387 struct p2p_device *dev;
388 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
389 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
397 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
398 * @p2p: P2P module context from p2p_init()
399 * @addr: P2P Interface Address of the peer
400 * Returns: Pointer to the device entry or %NULL if not found
402 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
405 struct p2p_device *dev;
406 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
407 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
415 * p2p_create_device - Create a peer entry
416 * @p2p: P2P module context from p2p_init()
417 * @addr: P2P Device Address of the peer
418 * Returns: Pointer to the device entry or %NULL on failure
420 * If there is already an entry for the peer, it will be returned instead of
421 * creating a new one.
423 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
426 struct p2p_device *dev, *oldest = NULL;
429 dev = p2p_get_device(p2p, addr);
433 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
435 if (oldest == NULL ||
436 os_reltime_before(&dev->last_seen, &oldest->last_seen))
439 if (count + 1 > p2p->cfg->max_peers && oldest) {
440 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
441 dl_list_del(&oldest->list);
442 p2p_device_free(p2p, oldest);
445 dev = os_zalloc(sizeof(*dev));
448 dl_list_add(&p2p->devices, &dev->list);
449 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
455 static void p2p_copy_client_info(struct p2p_device *dev,
456 struct p2p_client_info *cli)
458 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
459 dev->info.device_name[cli->dev_name_len] = '\0';
460 dev->info.dev_capab = cli->dev_capab;
461 dev->info.config_methods = cli->config_methods;
462 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
463 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
464 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
465 dev->info.wps_sec_dev_type_list_len);
469 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
470 const u8 *go_interface_addr, int freq,
471 const u8 *gi, size_t gi_len)
473 struct p2p_group_info info;
475 struct p2p_device *dev;
480 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
484 * Clear old data for this group; if the devices are still in the
485 * group, the information will be restored in the loop following this.
487 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
488 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
490 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
491 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
495 for (c = 0; c < info.num_clients; c++) {
496 struct p2p_client_info *cli = &info.client[c];
497 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
499 continue; /* ignore our own entry */
500 dev = p2p_get_device(p2p, cli->p2p_device_addr);
502 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
503 P2P_DEV_PROBE_REQ_ONLY)) {
505 * Update information since we have not
506 * received this directly from the client.
508 p2p_copy_client_info(dev, cli);
511 * Need to update P2P Client Discoverability
512 * flag since it is valid only in P2P Group
515 dev->info.dev_capab &=
516 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
517 dev->info.dev_capab |=
519 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
521 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
522 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
525 dev = p2p_create_device(p2p, cli->p2p_device_addr);
528 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
529 p2p_copy_client_info(dev, cli);
530 dev->oper_freq = freq;
531 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
532 dev->info.p2p_device_addr,
534 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
537 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
539 os_get_reltime(&dev->last_seen);
540 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
541 os_memcpy(dev->member_in_go_iface, go_interface_addr,
549 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
550 int probe_req, const struct p2p_message *msg)
552 os_memcpy(dev->info.device_name, msg->device_name,
553 sizeof(dev->info.device_name));
555 if (msg->manufacturer &&
556 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
557 os_memset(dev->info.manufacturer, 0,
558 sizeof(dev->info.manufacturer));
559 os_memcpy(dev->info.manufacturer, msg->manufacturer,
560 msg->manufacturer_len);
563 if (msg->model_name &&
564 msg->model_name_len < sizeof(dev->info.model_name)) {
565 os_memset(dev->info.model_name, 0,
566 sizeof(dev->info.model_name));
567 os_memcpy(dev->info.model_name, msg->model_name,
568 msg->model_name_len);
571 if (msg->model_number &&
572 msg->model_number_len < sizeof(dev->info.model_number)) {
573 os_memset(dev->info.model_number, 0,
574 sizeof(dev->info.model_number));
575 os_memcpy(dev->info.model_number, msg->model_number,
576 msg->model_number_len);
579 if (msg->serial_number &&
580 msg->serial_number_len < sizeof(dev->info.serial_number)) {
581 os_memset(dev->info.serial_number, 0,
582 sizeof(dev->info.serial_number));
583 os_memcpy(dev->info.serial_number, msg->serial_number,
584 msg->serial_number_len);
587 if (msg->pri_dev_type)
588 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
589 sizeof(dev->info.pri_dev_type));
590 else if (msg->wps_pri_dev_type)
591 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
592 sizeof(dev->info.pri_dev_type));
594 if (msg->wps_sec_dev_type_list) {
595 os_memcpy(dev->info.wps_sec_dev_type_list,
596 msg->wps_sec_dev_type_list,
597 msg->wps_sec_dev_type_list_len);
598 dev->info.wps_sec_dev_type_list_len =
599 msg->wps_sec_dev_type_list_len;
602 if (msg->capability) {
604 * P2P Client Discoverability bit is reserved in all frames
605 * that use this function, so do not change its value here.
607 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
608 dev->info.dev_capab |= msg->capability[0] &
609 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
610 dev->info.group_capab = msg->capability[1];
613 if (msg->ext_listen_timing) {
614 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
615 dev->ext_listen_interval =
616 WPA_GET_LE16(msg->ext_listen_timing + 2);
620 u16 new_config_methods;
621 new_config_methods = msg->config_methods ?
622 msg->config_methods : msg->wps_config_methods;
623 if (new_config_methods &&
624 dev->info.config_methods != new_config_methods) {
625 p2p_dbg(p2p, "Update peer " MACSTR
626 " config_methods 0x%x -> 0x%x",
627 MAC2STR(dev->info.p2p_device_addr),
628 dev->info.config_methods,
630 dev->info.config_methods = new_config_methods;
636 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
642 wpabuf_free(dev->info.vendor_elems);
643 dev->info.vendor_elems = NULL;
647 for (pos = ies; pos + 1 < end; pos += len) {
654 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
658 u32 type = WPA_GET_BE32(pos);
660 if (type == WPA_IE_VENDOR_TYPE ||
661 type == WMM_IE_VENDOR_TYPE ||
662 type == WPS_IE_VENDOR_TYPE ||
663 type == P2P_IE_VENDOR_TYPE ||
664 type == WFD_IE_VENDOR_TYPE)
668 /* Unknown vendor element - make raw IE data available */
669 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
671 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
676 static int p2p_compare_wfd_info(struct p2p_device *dev,
677 const struct p2p_message *msg)
679 if (dev->info.wfd_subelems && msg->wfd_subelems) {
680 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
683 return os_memcmp(dev->info.wfd_subelems->buf,
684 msg->wfd_subelems->buf,
685 dev->info.wfd_subelems->used);
687 if (dev->info.wfd_subelems || msg->wfd_subelems)
695 * p2p_add_device - Add peer entries based on scan results or P2P frames
696 * @p2p: P2P module context from p2p_init()
697 * @addr: Source address of Beacon or Probe Response frame (may be either
698 * P2P Device Address or P2P Interface Address)
699 * @level: Signal level (signal strength of the received frame from the peer)
700 * @freq: Frequency on which the Beacon or Probe Response frame was received
701 * @rx_time: Time when the result was received
702 * @ies: IEs from the Beacon or Probe Response frame
703 * @ies_len: Length of ies buffer in octets
704 * @scan_res: Whether this was based on scan results
705 * Returns: 0 on success, -1 on failure
707 * If the scan result is for a GO, the clients in the group will also be added
708 * to the peer table. This function can also be used with some other frames
709 * like Provision Discovery Request that contains P2P Capability and P2P Device
712 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
713 struct os_reltime *rx_time, int level, const u8 *ies,
714 size_t ies_len, int scan_res)
716 struct p2p_device *dev;
717 struct p2p_message msg;
718 const u8 *p2p_dev_addr;
721 struct os_reltime time_now;
723 os_memset(&msg, 0, sizeof(msg));
724 if (p2p_parse_ies(ies, ies_len, &msg)) {
725 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
726 p2p_parse_free(&msg);
730 if (msg.p2p_device_addr)
731 p2p_dev_addr = msg.p2p_device_addr;
732 else if (msg.device_id)
733 p2p_dev_addr = msg.device_id;
735 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
736 p2p_parse_free(&msg);
740 if (!is_zero_ether_addr(p2p->peer_filter) &&
741 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
742 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
743 " due to peer filter", MAC2STR(p2p_dev_addr));
744 p2p_parse_free(&msg);
748 dev = p2p_create_device(p2p, p2p_dev_addr);
750 p2p_parse_free(&msg);
754 if (rx_time == NULL) {
755 os_get_reltime(&time_now);
760 * Update the device entry only if the new peer
761 * entry is newer than the one previously stored.
763 if (dev->last_seen.sec > 0 &&
764 os_reltime_before(rx_time, &dev->last_seen)) {
765 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
766 (unsigned int) rx_time->sec,
767 (unsigned int) rx_time->usec,
768 (unsigned int) dev->last_seen.sec,
769 (unsigned int) dev->last_seen.usec);
770 p2p_parse_free(&msg);
774 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
776 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
778 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
779 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
781 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
782 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
784 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
785 dev->oper_ssid_len = msg.ssid[1];
788 if (msg.adv_service_instance && msg.adv_service_instance_len) {
789 wpabuf_free(dev->info.p2ps_instance);
790 dev->info.p2ps_instance = wpabuf_alloc_copy(
791 msg.adv_service_instance, msg.adv_service_instance_len);
794 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
795 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
797 if (*msg.ds_params == 14)
800 ds_freq = 2407 + *msg.ds_params * 5;
801 if (freq != ds_freq) {
802 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
808 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
809 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
810 MACSTR " %d -> %d MHz (DS param %d)",
811 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
812 freq, msg.ds_params ? *msg.ds_params : -1);
815 dev->listen_freq = freq;
817 dev->oper_freq = freq;
819 dev->info.level = level;
821 p2p_copy_wps_info(p2p, dev, 0, &msg);
823 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
824 wpabuf_free(dev->info.wps_vendor_ext[i]);
825 dev->info.wps_vendor_ext[i] = NULL;
828 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
829 if (msg.wps_vendor_ext[i] == NULL)
831 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
832 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
833 if (dev->info.wps_vendor_ext[i] == NULL)
837 wfd_changed = p2p_compare_wfd_info(dev, &msg);
839 if (msg.wfd_subelems) {
840 wpabuf_free(dev->info.wfd_subelems);
841 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
845 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
846 msg.group_info, msg.group_info_len);
849 p2p_parse_free(&msg);
851 p2p_update_peer_vendor_elems(dev, ies, ies_len);
853 if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
854 (!msg.adv_service_instance ||
855 (dev->flags & P2P_DEV_P2PS_REPORTED)))
858 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
859 freq, (unsigned int) rx_time->sec,
860 (unsigned int) rx_time->usec);
861 if (dev->flags & P2P_DEV_USER_REJECTED) {
862 p2p_dbg(p2p, "Do not report rejected device");
866 if (dev->info.config_methods == 0 &&
867 (freq == 2412 || freq == 2437 || freq == 2462)) {
869 * If we have only seen a Beacon frame from a GO, we do not yet
870 * know what WPS config methods it supports. Since some
871 * applications use config_methods value from P2P-DEVICE-FOUND
872 * events, postpone reporting this peer until we've fully
873 * discovered its capabilities.
875 * At least for now, do this only if the peer was detected on
876 * one of the social channels since that peer can be easily be
877 * found again and there are no limitations of having to use
878 * passive scan on this channels, so this can be done through
879 * Probe Response frame that includes the config_methods
882 p2p_dbg(p2p, "Do not report peer " MACSTR
883 " with unknown config methods", MAC2STR(addr));
887 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
888 !(dev->flags & P2P_DEV_REPORTED_ONCE));
889 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
891 if (msg.adv_service_instance)
892 dev->flags |= P2P_DEV_P2PS_REPORTED;
898 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
902 if (p2p->go_neg_peer == dev) {
904 * If GO Negotiation is in progress, report that it has failed.
906 p2p_go_neg_failed(p2p, -1);
908 if (p2p->invite_peer == dev)
909 p2p->invite_peer = NULL;
910 if (p2p->sd_peer == dev)
912 if (p2p->pending_client_disc_go == dev)
913 p2p->pending_client_disc_go = NULL;
915 /* dev_lost() device, but only if it was previously dev_found() */
916 if (dev->flags & P2P_DEV_REPORTED_ONCE)
917 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
918 dev->info.p2p_device_addr);
920 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
921 wpabuf_free(dev->info.wps_vendor_ext[i]);
922 dev->info.wps_vendor_ext[i] = NULL;
925 wpabuf_free(dev->info.wfd_subelems);
926 wpabuf_free(dev->info.vendor_elems);
927 wpabuf_free(dev->go_neg_conf);
928 wpabuf_free(dev->info.p2ps_instance);
934 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
936 struct p2p_channels *c;
937 struct p2p_reg_class *cla;
944 c = &p2p->cfg->channels;
945 for (cl = 0; cl < c->reg_classes; cl++) {
946 cla = &c->reg_class[cl];
947 if (cla->reg_class != p2p->last_prog_scan_class)
949 for (ch = 0; ch < cla->channels; ch++) {
950 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
960 /* Start from beginning */
961 reg_class = c->reg_class[0].reg_class;
962 channel = c->reg_class[0].channel[0];
964 /* Pick the next channel */
966 if (ch == cla->channels) {
968 if (cl == c->reg_classes)
972 reg_class = c->reg_class[cl].reg_class;
973 channel = c->reg_class[cl].channel[ch];
976 freq = p2p_channel_to_freq(reg_class, channel);
977 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
978 reg_class, channel, freq);
979 p2p->last_prog_scan_class = reg_class;
980 p2p->last_prog_scan_chan = channel;
982 if (freq == 2412 || freq == 2437 || freq == 2462)
983 return 0; /* No need to add social channels */
988 static void p2p_search(struct p2p_data *p2p)
991 enum p2p_scan_type type;
992 u16 pw_id = DEV_PW_DEFAULT;
995 if (p2p->drv_in_listen) {
996 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
999 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1001 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
1002 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1003 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1004 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1006 type = P2P_SCAN_SOCIAL;
1007 p2p_dbg(p2p, "Starting search");
1010 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1011 p2p->num_req_dev_types, p2p->req_dev_types,
1012 p2p->find_dev_id, pw_id);
1014 p2p_dbg(p2p, "Scan request schedule failed");
1015 p2p_continue_find(p2p);
1020 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1022 struct p2p_data *p2p = eloop_ctx;
1023 p2p_dbg(p2p, "Find timeout -> stop");
1028 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1031 p2p_dbg(p2p, "Scan request failed");
1032 /* Do continue find even for the first p2p_find_scan */
1033 p2p_continue_find(p2p);
1035 p2p_dbg(p2p, "Running p2p_scan");
1036 p2p->p2p_scan_running = 1;
1037 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1038 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1044 static int p2p_run_after_scan(struct p2p_data *p2p)
1046 struct p2p_device *dev;
1047 enum p2p_after_scan op;
1049 if (p2p->after_scan_tx) {
1050 p2p->after_scan_tx_in_progress = 1;
1051 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1052 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1053 p2p->after_scan_tx->freq,
1054 p2p->after_scan_tx->dst,
1055 p2p->after_scan_tx->src,
1056 p2p->after_scan_tx->bssid,
1057 (u8 *) (p2p->after_scan_tx + 1),
1058 p2p->after_scan_tx->len,
1059 p2p->after_scan_tx->wait_time);
1060 os_free(p2p->after_scan_tx);
1061 p2p->after_scan_tx = NULL;
1065 op = p2p->start_after_scan;
1066 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1068 case P2P_AFTER_SCAN_NOTHING:
1070 case P2P_AFTER_SCAN_LISTEN:
1071 p2p_dbg(p2p, "Start previously requested Listen state");
1072 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1073 p2p->pending_listen_usec / 1000);
1075 case P2P_AFTER_SCAN_CONNECT:
1076 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1077 MAC2STR(p2p->after_scan_peer));
1078 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1080 p2p_dbg(p2p, "Peer not known anymore");
1083 p2p_connect_send(p2p, dev);
1091 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1093 struct p2p_data *p2p = eloop_ctx;
1095 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1096 running = p2p->p2p_scan_running;
1097 /* Make sure we recover from missed scan results callback */
1098 p2p->p2p_scan_running = 0;
1101 p2p_run_after_scan(p2p);
1105 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1107 p2p->num_req_dev_types = 0;
1108 os_free(p2p->req_dev_types);
1109 p2p->req_dev_types = NULL;
1113 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1115 u8 buf[SHA256_MAC_LEN];
1117 const u8 *adv_array;
1124 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1128 adv_array = (u8 *) str_buf;
1129 adv_len = os_strlen(str);
1131 for (i = 0; str[i] && i < adv_len; i++) {
1132 if (str[i] >= 'A' && str[i] <= 'Z')
1133 str_buf[i] = str[i] - 'A' + 'a';
1135 str_buf[i] = str[i];
1138 if (sha256_vector(1, &adv_array, &adv_len, buf))
1141 os_memcpy(hash, buf, P2PS_HASH_LEN);
1146 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1147 enum p2p_discovery_type type,
1148 unsigned int num_req_dev_types, const u8 *req_dev_types,
1149 const u8 *dev_id, unsigned int search_delay,
1150 u8 seek_count, const char **seek)
1154 p2p_dbg(p2p, "Starting find (type=%d)", type);
1155 os_get_reltime(&p2p->find_start);
1156 if (p2p->p2p_scan_running) {
1157 p2p_dbg(p2p, "p2p_scan is already running");
1160 p2p_free_req_dev_types(p2p);
1161 if (req_dev_types && num_req_dev_types) {
1162 p2p->req_dev_types = os_malloc(num_req_dev_types *
1164 if (p2p->req_dev_types == NULL)
1166 os_memcpy(p2p->req_dev_types, req_dev_types,
1167 num_req_dev_types * WPS_DEV_TYPE_LEN);
1168 p2p->num_req_dev_types = num_req_dev_types;
1172 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1173 p2p->find_dev_id = p2p->find_dev_id_buf;
1175 p2p->find_dev_id = NULL;
1177 if (seek_count == 0 || !seek) {
1178 /* Not an ASP search */
1180 } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1182 * An empty seek string means no hash values, but still an ASP
1185 p2p->p2ps_seek_count = 0;
1187 } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1188 u8 buf[P2PS_HASH_LEN];
1191 p2p->p2ps_seek_count = seek_count;
1192 for (i = 0; i < seek_count; i++) {
1193 if (!p2ps_gen_hash(p2p, seek[i], buf))
1196 /* If asking for wildcard, don't do others */
1197 if (os_memcmp(buf, p2p->wild_card_hash,
1198 P2PS_HASH_LEN) == 0) {
1199 p2p->p2ps_seek_count = 0;
1203 os_memcpy(&p2p->query_hash[i * P2PS_HASH_LEN], buf,
1208 p2p->p2ps_seek_count = 0;
1212 /* Special case to perform wildcard search */
1213 if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1214 p2p->p2ps_seek_count = 1;
1215 os_memcpy(&p2p->query_hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1218 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1219 p2p_clear_timeout(p2p);
1220 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1221 p2p->find_type = type;
1222 p2p_device_clear_reported(p2p);
1223 p2p_set_state(p2p, P2P_SEARCH);
1224 p2p->search_delay = search_delay;
1225 p2p->in_search_delay = 0;
1226 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1227 p2p->last_p2p_find_timeout = timeout;
1229 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1232 case P2P_FIND_START_WITH_FULL:
1233 case P2P_FIND_PROGRESSIVE:
1234 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1235 p2p->num_req_dev_types,
1236 p2p->req_dev_types, dev_id,
1239 case P2P_FIND_ONLY_SOCIAL:
1240 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1241 p2p->num_req_dev_types,
1242 p2p->req_dev_types, dev_id,
1249 if (res != 0 && p2p->p2p_scan_running) {
1250 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1251 /* wait for the previous p2p_scan to complete */
1252 res = 0; /* do not report failure */
1253 } else if (res != 0) {
1254 p2p_dbg(p2p, "Failed to start p2p_scan");
1255 p2p_set_state(p2p, P2P_IDLE);
1256 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1263 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1265 p2p_dbg(p2p, "Stopping find");
1266 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1267 p2p_clear_timeout(p2p);
1268 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1269 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1271 p2p->p2ps_seek_count = 0;
1273 p2p_set_state(p2p, P2P_IDLE);
1274 p2p_free_req_dev_types(p2p);
1275 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1276 if (p2p->go_neg_peer)
1277 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1278 p2p->go_neg_peer = NULL;
1279 p2p->sd_peer = NULL;
1280 p2p->invite_peer = NULL;
1281 p2p_stop_listen_for_freq(p2p, freq);
1285 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1287 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1288 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1291 if (p2p->in_listen) {
1293 p2p_clear_timeout(p2p);
1295 if (p2p->drv_in_listen) {
1297 * The driver may not deliver callback to p2p_listen_end()
1298 * when the operation gets canceled, so clear the internal
1299 * variable that is tracking driver state.
1301 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1302 p2p->drv_in_listen = 0;
1304 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1308 void p2p_stop_listen(struct p2p_data *p2p)
1310 if (p2p->state != P2P_LISTEN_ONLY) {
1311 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1315 p2p_stop_listen_for_freq(p2p, 0);
1316 p2p_set_state(p2p, P2P_IDLE);
1320 void p2p_stop_find(struct p2p_data *p2p)
1322 p2p->pending_listen_freq = 0;
1323 p2p_stop_find_for_freq(p2p, 0);
1327 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1328 unsigned int force_freq,
1329 unsigned int pref_freq, int go)
1331 u8 op_class, op_channel;
1332 unsigned int freq = force_freq ? force_freq : pref_freq;
1334 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1335 force_freq, pref_freq, go);
1336 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1337 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1341 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1342 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1344 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1345 freq, op_class, op_channel);
1349 p2p->op_reg_class = op_class;
1350 p2p->op_channel = op_channel;
1353 p2p->channels.reg_classes = 1;
1354 p2p->channels.reg_class[0].channels = 1;
1355 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1356 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1358 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1359 sizeof(struct p2p_channels));
1366 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1368 u8 op_class, op_channel;
1369 const int op_classes_5ghz[] = { 124, 115, 0 };
1370 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1371 const int op_classes_vht[] = { 128, 0 };
1373 p2p_dbg(p2p, "Prepare channel best");
1375 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1376 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1377 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1379 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1380 p2p->op_reg_class = op_class;
1381 p2p->op_channel = op_channel;
1382 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1383 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1384 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1386 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1387 p2p->op_reg_class = op_class;
1388 p2p->op_channel = op_channel;
1389 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1390 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1391 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1392 &op_channel) == 0) {
1393 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1394 p2p->op_reg_class = op_class;
1395 p2p->op_channel = op_channel;
1396 } else if (p2p->cfg->num_pref_chan > 0 &&
1397 p2p_channels_includes(&p2p->cfg->channels,
1398 p2p->cfg->pref_chan[0].op_class,
1399 p2p->cfg->pref_chan[0].chan)) {
1400 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1401 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1402 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1403 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1404 &p2p->op_reg_class, &p2p->op_channel) ==
1406 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1407 p2p->op_reg_class, p2p->op_channel);
1408 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1409 &p2p->op_reg_class, &p2p->op_channel) ==
1411 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1412 p2p->op_reg_class, p2p->op_channel);
1413 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1414 &p2p->op_reg_class, &p2p->op_channel) ==
1416 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1417 p2p->op_reg_class, p2p->op_channel);
1418 } else if (p2p_channels_includes(&p2p->cfg->channels,
1419 p2p->cfg->op_reg_class,
1420 p2p->cfg->op_channel)) {
1421 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1422 p2p->op_reg_class = p2p->cfg->op_reg_class;
1423 p2p->op_channel = p2p->cfg->op_channel;
1424 } else if (p2p_channel_random_social(&p2p->cfg->channels,
1426 &p2p->op_channel) == 0) {
1427 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1428 p2p->op_reg_class, p2p->op_channel);
1430 /* Select any random available channel from the first available
1431 * operating class */
1432 p2p_channel_select(&p2p->cfg->channels, NULL,
1435 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1436 p2p->op_channel, p2p->op_reg_class);
1439 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1440 sizeof(struct p2p_channels));
1445 * p2p_prepare_channel - Select operating channel for GO Negotiation
1446 * @p2p: P2P module context from p2p_init()
1447 * @dev: Selected peer device
1448 * @force_freq: Forced frequency in MHz or 0 if not forced
1449 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1450 * @go: Whether the local end will be forced to be GO
1451 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1453 * This function is used to do initial operating channel selection for GO
1454 * Negotiation prior to having received peer information. The selected channel
1455 * may be further optimized in p2p_reselect_channel() once the peer information
1458 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1459 unsigned int force_freq, unsigned int pref_freq, int go)
1461 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1462 force_freq, pref_freq, go);
1463 if (force_freq || pref_freq) {
1464 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1468 p2p_prepare_channel_best(p2p);
1470 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1472 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1473 else if (!force_freq)
1474 p2p_channels_union_inplace(&p2p->channels,
1475 &p2p->cfg->cli_channels);
1476 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1478 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1479 p2p->op_reg_class, p2p->op_channel,
1480 force_freq ? " (forced)" : "");
1483 dev->flags |= P2P_DEV_FORCE_FREQ;
1485 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1491 static void p2p_set_dev_persistent(struct p2p_device *dev,
1492 int persistent_group)
1494 switch (persistent_group) {
1496 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1497 P2P_DEV_PREFER_PERSISTENT_RECONN);
1500 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1501 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1504 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1505 P2P_DEV_PREFER_PERSISTENT_RECONN;
1511 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1512 enum p2p_wps_method wps_method,
1513 int go_intent, const u8 *own_interface_addr,
1514 unsigned int force_freq, int persistent_group,
1515 const u8 *force_ssid, size_t force_ssid_len,
1516 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1518 struct p2p_device *dev;
1520 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1521 " GO Intent=%d Intended Interface Address=" MACSTR
1522 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1524 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1525 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1527 dev = p2p_get_device(p2p, peer_addr);
1528 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1529 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1530 MAC2STR(peer_addr));
1534 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1535 go_intent == 15) < 0)
1538 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1539 if (!(dev->info.dev_capab &
1540 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1541 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1542 " that is in a group and is not discoverable",
1543 MAC2STR(peer_addr));
1546 if (dev->oper_freq <= 0) {
1547 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1548 " with incomplete information",
1549 MAC2STR(peer_addr));
1554 * First, try to connect directly. If the peer does not
1555 * acknowledge frames, assume it is sleeping and use device
1556 * discoverability via the GO at that point.
1562 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1563 force_ssid, force_ssid_len);
1564 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1565 p2p->ssid_len = force_ssid_len;
1569 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1570 dev->flags &= ~P2P_DEV_USER_REJECTED;
1571 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1572 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1573 if (pd_before_go_neg)
1574 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1576 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1578 * Assign dialog token and tie breaker here to use the same
1579 * values in each retry within the same GO Negotiation exchange.
1581 dev->dialog_token++;
1582 if (dev->dialog_token == 0)
1583 dev->dialog_token = 1;
1584 dev->tie_breaker = p2p->next_tie_breaker;
1585 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1587 dev->connect_reqs = 0;
1588 dev->go_neg_req_sent = 0;
1589 dev->go_state = UNKNOWN_GO;
1590 p2p_set_dev_persistent(dev, persistent_group);
1591 p2p->go_intent = go_intent;
1592 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1594 if (p2p->state != P2P_IDLE)
1597 if (p2p->after_scan_tx) {
1599 * We need to drop the pending frame to avoid issues with the
1600 * new GO Negotiation, e.g., when the pending frame was from a
1601 * previous attempt at starting a GO Negotiation.
1603 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1604 os_free(p2p->after_scan_tx);
1605 p2p->after_scan_tx = NULL;
1608 dev->wps_method = wps_method;
1609 dev->oob_pw_id = oob_pw_id;
1610 dev->status = P2P_SC_SUCCESS;
1612 if (p2p->p2p_scan_running) {
1613 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1614 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1615 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1618 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1620 return p2p_connect_send(p2p, dev);
1624 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1625 enum p2p_wps_method wps_method,
1626 int go_intent, const u8 *own_interface_addr,
1627 unsigned int force_freq, int persistent_group,
1628 const u8 *force_ssid, size_t force_ssid_len,
1629 unsigned int pref_freq, u16 oob_pw_id)
1631 struct p2p_device *dev;
1633 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1634 " GO Intent=%d Intended Interface Address=" MACSTR
1635 " wps_method=%d persistent_group=%d oob_pw_id=%u",
1636 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1637 wps_method, persistent_group, oob_pw_id);
1639 dev = p2p_get_device(p2p, peer_addr);
1641 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1642 MAC2STR(peer_addr));
1646 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1652 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1653 force_ssid, force_ssid_len);
1654 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1655 p2p->ssid_len = force_ssid_len;
1659 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1660 dev->flags &= ~P2P_DEV_USER_REJECTED;
1661 dev->go_neg_req_sent = 0;
1662 dev->go_state = UNKNOWN_GO;
1663 p2p_set_dev_persistent(dev, persistent_group);
1664 p2p->go_intent = go_intent;
1665 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1667 dev->wps_method = wps_method;
1668 dev->oob_pw_id = oob_pw_id;
1669 dev->status = P2P_SC_SUCCESS;
1675 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1676 struct p2p_device *dev, struct p2p_message *msg)
1678 os_get_reltime(&dev->last_seen);
1680 p2p_copy_wps_info(p2p, dev, 0, msg);
1682 if (msg->listen_channel) {
1684 freq = p2p_channel_to_freq(msg->listen_channel[3],
1685 msg->listen_channel[4]);
1687 p2p_dbg(p2p, "Unknown peer Listen channel: "
1688 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1689 msg->listen_channel[0],
1690 msg->listen_channel[1],
1691 msg->listen_channel[2],
1692 msg->listen_channel[3],
1693 msg->listen_channel[4]);
1695 p2p_dbg(p2p, "Update peer " MACSTR
1696 " Listen channel: %u -> %u MHz",
1697 MAC2STR(dev->info.p2p_device_addr),
1698 dev->listen_freq, freq);
1699 dev->listen_freq = freq;
1703 if (msg->wfd_subelems) {
1704 wpabuf_free(dev->info.wfd_subelems);
1705 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1708 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1709 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1710 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1712 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1713 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1715 MAC2STR(dev->info.p2p_device_addr),
1716 dev->info.dev_capab, dev->info.group_capab,
1717 dev->info.device_name, dev->listen_freq);
1720 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1722 if (dev->flags & P2P_DEV_USER_REJECTED) {
1723 p2p_dbg(p2p, "Do not report rejected device");
1727 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1728 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1729 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1733 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1735 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1736 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1737 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1738 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1739 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1743 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1745 if (p2p->ssid_set) {
1746 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1747 params->ssid_len = p2p->ssid_len;
1749 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1753 p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1758 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1760 struct p2p_go_neg_results res;
1761 int go = peer->go_state == LOCAL_GO;
1762 struct p2p_channels intersection;
1764 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1765 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1767 os_memset(&res, 0, sizeof(res));
1769 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1770 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1771 res.wps_method = peer->wps_method;
1772 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1773 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1774 res.persistent_group = 2;
1776 res.persistent_group = 1;
1780 /* Setup AP mode for WPS provisioning */
1781 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1783 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1784 res.ssid_len = p2p->ssid_len;
1785 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1787 res.freq = peer->oper_freq;
1788 if (p2p->ssid_len) {
1789 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1790 res.ssid_len = p2p->ssid_len;
1794 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1795 p2p_channels_dump(p2p, "peer channels", &peer->channels);
1796 p2p_channels_intersect(&p2p->channels, &peer->channels,
1799 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1800 p2p_channels_dump(p2p, "intersection after no-GO removal",
1804 p2p_channels_to_freqs(&intersection, res.freq_list,
1807 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1809 p2p_clear_timeout(p2p);
1811 peer->go_neg_req_sent = 0;
1812 peer->wps_method = WPS_NOT_READY;
1813 peer->oob_pw_id = 0;
1814 wpabuf_free(peer->go_neg_conf);
1815 peer->go_neg_conf = NULL;
1817 p2p_set_state(p2p, P2P_PROVISIONING);
1818 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1822 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1823 const u8 *data, size_t len, int rx_freq)
1825 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1826 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1832 case P2P_GO_NEG_REQ:
1833 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1835 case P2P_GO_NEG_RESP:
1836 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1838 case P2P_GO_NEG_CONF:
1839 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1841 case P2P_INVITATION_REQ:
1842 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1845 case P2P_INVITATION_RESP:
1846 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1848 case P2P_PROV_DISC_REQ:
1849 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1851 case P2P_PROV_DISC_RESP:
1852 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1854 case P2P_DEV_DISC_REQ:
1855 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1857 case P2P_DEV_DISC_RESP:
1858 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1861 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1868 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1869 const u8 *sa, const u8 *bssid, const u8 *data,
1870 size_t len, int freq)
1876 case WLAN_PA_VENDOR_SPECIFIC:
1881 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1887 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1889 case WLAN_PA_GAS_INITIAL_REQ:
1890 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1892 case WLAN_PA_GAS_INITIAL_RESP:
1893 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1895 case WLAN_PA_GAS_COMEBACK_REQ:
1896 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1898 case WLAN_PA_GAS_COMEBACK_RESP:
1899 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1905 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1906 const u8 *bssid, u8 category,
1907 const u8 *data, size_t len, int freq)
1909 if (category == WLAN_ACTION_PUBLIC) {
1910 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1914 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1920 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1925 /* P2P action frame */
1926 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1927 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1933 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1936 case P2P_PRESENCE_REQ:
1937 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1939 case P2P_PRESENCE_RESP:
1940 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1942 case P2P_GO_DISC_REQ:
1943 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1946 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1952 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1954 struct p2p_data *p2p = eloop_ctx;
1955 if (p2p->go_neg_peer == NULL)
1957 if (p2p->pending_listen_freq) {
1958 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1959 p2p->pending_listen_freq = 0;
1961 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1962 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1964 * Set new timeout to make sure a previously set one does not expire
1965 * too quickly while waiting for the GO Negotiation to complete.
1967 p2p_set_timeout(p2p, 0, 500000);
1968 p2p_connect_send(p2p, p2p->go_neg_peer);
1972 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1974 struct p2p_data *p2p = eloop_ctx;
1975 if (p2p->invite_peer == NULL)
1977 if (p2p->pending_listen_freq) {
1978 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1979 p2p->pending_listen_freq = 0;
1981 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1982 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1983 p2p->invite_dev_pw_id);
1987 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1988 const u8 *ie, size_t ie_len)
1990 struct p2p_message msg;
1991 struct p2p_device *dev;
1993 os_memset(&msg, 0, sizeof(msg));
1994 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1996 p2p_parse_free(&msg);
1997 return; /* not a P2P probe */
2000 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2001 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2003 /* The Probe Request is not part of P2P Device Discovery. It is
2004 * not known whether the source address of the frame is the P2P
2005 * Device Address or P2P Interface Address. Do not add a new
2006 * peer entry based on this frames.
2008 p2p_parse_free(&msg);
2012 dev = p2p_get_device(p2p, addr);
2014 if (dev->country[0] == 0 && msg.listen_channel)
2015 os_memcpy(dev->country, msg.listen_channel, 3);
2016 os_get_reltime(&dev->last_seen);
2017 p2p_parse_free(&msg);
2018 return; /* already known */
2021 dev = p2p_create_device(p2p, addr);
2023 p2p_parse_free(&msg);
2027 os_get_reltime(&dev->last_seen);
2028 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2030 if (msg.listen_channel) {
2031 os_memcpy(dev->country, msg.listen_channel, 3);
2032 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2033 msg.listen_channel[4]);
2036 p2p_copy_wps_info(p2p, dev, 1, &msg);
2038 if (msg.wfd_subelems) {
2039 wpabuf_free(dev->info.wfd_subelems);
2040 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2043 p2p_parse_free(&msg);
2045 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2046 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2047 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2048 dev->info.group_capab, dev->info.device_name,
2053 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2055 struct p2p_message *msg)
2057 struct p2p_device *dev;
2059 dev = p2p_get_device(p2p, addr);
2061 os_get_reltime(&dev->last_seen);
2062 return dev; /* already known */
2065 dev = p2p_create_device(p2p, addr);
2069 p2p_add_dev_info(p2p, addr, dev, msg);
2075 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2077 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2079 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2080 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2081 WPA_GET_BE16(&req_dev_type[6]) == 0)
2082 return 1; /* Category match with wildcard OUI/sub-category */
2087 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2088 size_t num_req_dev_type)
2091 for (i = 0; i < num_req_dev_type; i++) {
2092 if (dev_type_match(dev_type, req_dev_type[i]))
2100 * p2p_match_dev_type - Match local device type with requested type
2101 * @p2p: P2P module context from p2p_init()
2102 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2103 * Returns: 1 on match, 0 on mismatch
2105 * This function can be used to match the Requested Device Type attribute in
2106 * WPS IE with the local device types for deciding whether to reply to a Probe
2109 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2111 struct wps_parse_attr attr;
2114 if (wps_parse_msg(wps, &attr))
2115 return 1; /* assume no Requested Device Type attributes */
2117 if (attr.num_req_dev_type == 0)
2118 return 1; /* no Requested Device Type attributes -> match */
2120 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2121 attr.num_req_dev_type))
2122 return 1; /* Own Primary Device Type matches */
2124 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2125 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2127 attr.num_req_dev_type))
2128 return 1; /* Own Secondary Device Type matches */
2131 /* No matching device type found */
2136 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2143 #ifdef CONFIG_WIFI_DISPLAY
2144 if (p2p->wfd_ie_probe_resp)
2145 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2146 #endif /* CONFIG_WIFI_DISPLAY */
2148 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2149 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2151 if (p2p->query_count)
2152 extra += MAX_SVC_ADV_IE_LEN;
2154 buf = wpabuf_alloc(1000 + extra);
2158 if (p2p->go_neg_peer) {
2159 /* Advertise immediate availability of WPS credential */
2160 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2163 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2164 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2169 #ifdef CONFIG_WIFI_DISPLAY
2170 if (p2p->wfd_ie_probe_resp)
2171 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2172 #endif /* CONFIG_WIFI_DISPLAY */
2174 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2176 p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2179 len = p2p_buf_add_ie_hdr(buf);
2180 p2p_buf_add_capability(buf, p2p->dev_capab &
2181 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2182 if (p2p->ext_listen_interval)
2183 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2184 p2p->ext_listen_interval);
2185 p2p_buf_add_device_info(buf, p2p, NULL);
2186 p2p_buf_update_ie_hdr(buf, len);
2188 if (p2p->query_count) {
2189 p2p_buf_add_service_instance(buf, p2p, p2p->query_count,
2191 p2p->p2ps_adv_list);
2198 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2200 struct p2ps_advertisement *adv_data;
2202 p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2204 /* Wildcard always matches if we have actual services */
2205 if (os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0)
2206 return p2p->p2ps_adv_list != NULL;
2208 adv_data = p2p->p2ps_adv_list;
2210 p2p_dbg(p2p, "ASP hash: %x =? %x", hash[0], adv_data->hash[0]);
2211 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2213 adv_data = adv_data->next;
2220 static enum p2p_probe_req_status
2221 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2222 const u8 *bssid, const u8 *ie, size_t ie_len)
2224 struct ieee802_11_elems elems;
2226 struct ieee80211_mgmt *resp;
2227 struct p2p_message msg;
2230 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2232 /* Ignore invalid Probe Request frames */
2233 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2234 return P2P_PREQ_MALFORMED;
2237 if (elems.p2p == NULL) {
2238 /* not a P2P probe - ignore it */
2239 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2240 return P2P_PREQ_NOT_P2P;
2243 if (dst && !is_broadcast_ether_addr(dst) &&
2244 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2245 /* Not sent to the broadcast address or our P2P Device Address
2247 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2249 return P2P_PREQ_NOT_PROCESSED;
2252 if (bssid && !is_broadcast_ether_addr(bssid)) {
2253 /* Not sent to the Wildcard BSSID */
2254 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2256 return P2P_PREQ_NOT_PROCESSED;
2259 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2260 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2262 /* not using P2P Wildcard SSID - ignore */
2263 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2264 return P2P_PREQ_NOT_PROCESSED;
2267 if (supp_rates_11b_only(&elems)) {
2268 /* Indicates support for 11b rates only */
2269 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2270 return P2P_PREQ_NOT_P2P;
2273 os_memset(&msg, 0, sizeof(msg));
2274 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2275 /* Could not parse P2P attributes */
2276 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2277 return P2P_PREQ_NOT_P2P;
2280 p2p->p2ps_svc_found = 0;
2282 if (msg.service_hash && msg.service_hash_count) {
2283 const u8 *hash = msg.service_hash;
2284 u8 *dest = p2p->query_hash;
2287 p2p->query_count = 0;
2288 for (i = 0; i < msg.service_hash_count; i++) {
2289 if (p2p_service_find_asp(p2p, hash)) {
2290 p2p->p2ps_svc_found = 1;
2292 if (!os_memcmp(hash, p2p->wild_card_hash,
2294 /* We found match(es) but wildcard
2295 * will return all */
2296 p2p->query_count = 1;
2297 os_memcpy(p2p->query_hash, hash,
2302 /* Save each matching hash */
2303 if (p2p->query_count < P2P_MAX_QUERY_HASH) {
2304 os_memcpy(dest, hash, P2PS_HASH_LEN);
2305 dest += P2PS_HASH_LEN;
2308 /* We found match(es) but too many to
2310 p2p->query_count = 0;
2314 hash += P2PS_HASH_LEN;
2317 p2p_dbg(p2p, "ASP adv found: %d", p2p->p2ps_svc_found);
2319 /* Probed hash unknown */
2320 if (!p2p->p2ps_svc_found) {
2321 p2p_parse_free(&msg);
2322 return P2P_PREQ_NOT_PROCESSED;
2325 /* This is not a P2PS Probe Request */
2326 p2p->query_count = 0;
2327 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2329 if (!p2p->in_listen || !p2p->drv_in_listen) {
2330 /* not in Listen state - ignore Probe Request */
2331 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2332 p2p->in_listen, p2p->drv_in_listen);
2333 p2p_parse_free(&msg);
2334 return P2P_PREQ_NOT_LISTEN;
2338 if (msg.device_id &&
2339 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2340 /* Device ID did not match */
2341 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2342 MAC2STR(msg.device_id));
2343 p2p_parse_free(&msg);
2344 return P2P_PREQ_NOT_PROCESSED;
2347 /* Check Requested Device Type match */
2348 if (msg.wps_attributes &&
2349 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2350 /* No match with Requested Device Type */
2351 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2352 p2p_parse_free(&msg);
2353 return P2P_PREQ_NOT_PROCESSED;
2355 p2p_parse_free(&msg);
2357 if (!p2p->cfg->send_probe_resp) {
2358 /* Response generated elsewhere */
2359 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2360 return P2P_PREQ_NOT_PROCESSED;
2363 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2366 * We do not really have a specific BSS that this frame is advertising,
2367 * so build a frame that has some information in valid format. This is
2368 * really only used for discovery purposes, not to learn exact BSS
2371 ies = p2p_build_probe_resp_ies(p2p);
2373 return P2P_PREQ_NOT_PROCESSED;
2375 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2378 return P2P_PREQ_NOT_PROCESSED;
2382 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2384 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2385 (WLAN_FC_STYPE_PROBE_RESP << 4));
2386 os_memcpy(resp->da, addr, ETH_ALEN);
2387 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2388 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2389 resp->u.probe_resp.beacon_int = host_to_le16(100);
2390 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2391 resp->u.probe_resp.capab_info =
2392 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2393 WLAN_CAPABILITY_PRIVACY |
2394 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2396 wpabuf_put_u8(buf, WLAN_EID_SSID);
2397 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2398 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2400 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2401 wpabuf_put_u8(buf, 8);
2402 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2403 wpabuf_put_u8(buf, 90 / 5);
2404 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2405 wpabuf_put_u8(buf, 180 / 5);
2406 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2407 wpabuf_put_u8(buf, 360 / 5);
2408 wpabuf_put_u8(buf, 480 / 5);
2409 wpabuf_put_u8(buf, 540 / 5);
2411 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2412 wpabuf_put_u8(buf, 1);
2413 wpabuf_put_u8(buf, p2p->cfg->channel);
2415 wpabuf_put_buf(buf, ies);
2418 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2422 return P2P_PREQ_NOT_PROCESSED;
2426 enum p2p_probe_req_status
2427 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2428 const u8 *bssid, const u8 *ie, size_t ie_len)
2430 enum p2p_probe_req_status res;
2432 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2434 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2435 p2p->query_count = 0;
2437 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2439 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2441 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2442 /* Received a Probe Request from GO Negotiation peer */
2443 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2444 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2445 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2446 return P2P_PREQ_PROCESSED;
2449 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2451 (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2452 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2454 /* Received a Probe Request from Invite peer */
2455 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2456 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2457 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2458 return P2P_PREQ_PROCESSED;
2465 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2466 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2475 return 0; /* WLAN AP is not a P2P manager */
2478 * (Re)Association Request - P2P IE
2479 * P2P Capability attribute (shall be present)
2480 * P2P Interface attribute (present if concurrent device and
2481 * P2P Management is enabled)
2483 tmp = wpabuf_alloc(200);
2487 lpos = p2p_buf_add_ie_hdr(tmp);
2489 if (p2p->num_groups > 0) {
2490 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2491 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2492 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2494 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2496 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2497 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2498 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2499 p2p_buf_add_p2p_interface(tmp, p2p);
2500 p2p_buf_update_ie_hdr(tmp, lpos);
2502 tmplen = wpabuf_len(tmp);
2506 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2515 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2516 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2520 struct p2p_device *peer;
2526 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2528 #ifdef CONFIG_WIFI_DISPLAY
2529 if (p2p->wfd_ie_assoc_req)
2530 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2531 #endif /* CONFIG_WIFI_DISPLAY */
2533 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2534 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2537 * (Re)Association Request - P2P IE
2538 * P2P Capability attribute (shall be present)
2539 * Extended Listen Timing (may be present)
2540 * P2P Device Info attribute (shall be present)
2542 tmp = wpabuf_alloc(200 + extra);
2546 #ifdef CONFIG_WIFI_DISPLAY
2547 if (p2p->wfd_ie_assoc_req)
2548 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2549 #endif /* CONFIG_WIFI_DISPLAY */
2551 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2553 p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2555 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2557 lpos = p2p_buf_add_ie_hdr(tmp);
2558 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2559 if (p2p->ext_listen_interval)
2560 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2561 p2p->ext_listen_interval);
2562 p2p_buf_add_device_info(tmp, p2p, peer);
2563 p2p_buf_update_ie_hdr(tmp, lpos);
2565 tmplen = wpabuf_len(tmp);
2569 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2578 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2580 struct wpabuf *p2p_ie;
2583 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2587 ret = p2p_attr_text(p2p_ie, buf, end);
2588 wpabuf_free(p2p_ie);
2593 struct p2ps_advertisement *
2594 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2596 struct p2ps_advertisement *adv_data;
2601 adv_data = p2p->p2ps_adv_list;
2603 if (adv_data->id == adv_id)
2605 adv_data = adv_data->next;
2612 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2614 struct p2ps_advertisement *adv_data;
2615 struct p2ps_advertisement **prior;
2620 adv_data = p2p->p2ps_adv_list;
2621 prior = &p2p->p2ps_adv_list;
2623 if (adv_data->id == adv_id) {
2624 p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2625 *prior = adv_data->next;
2629 prior = &adv_data->next;
2630 adv_data = adv_data->next;
2637 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2638 const char *adv_str, u8 svc_state, u16 config_methods,
2639 const char *svc_info)
2641 struct p2ps_advertisement *adv_data, *tmp, **prev;
2642 u8 buf[P2PS_HASH_LEN];
2643 size_t adv_data_len, adv_len, info_len = 0;
2645 if (!p2p || !adv_str || !adv_str[0])
2648 if (!(config_methods & p2p->cfg->config_methods)) {
2649 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2650 config_methods, p2p->cfg->config_methods);
2654 if (!p2ps_gen_hash(p2p, adv_str, buf))
2658 info_len = os_strlen(svc_info);
2659 adv_len = os_strlen(adv_str);
2660 adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2663 adv_data = os_zalloc(adv_data_len);
2667 os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2668 adv_data->id = adv_id;
2669 adv_data->state = svc_state;
2670 adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2671 adv_data->auto_accept = (u8) auto_accept;
2672 os_memcpy(adv_data->svc_name, adv_str, adv_len);
2674 if (svc_info && info_len) {
2675 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2676 os_memcpy(adv_data->svc_info, svc_info, info_len);
2680 * Group Advertisements by service string. They do not need to be
2681 * sorted, but groups allow easier Probe Response instance grouping
2683 tmp = p2p->p2ps_adv_list;
2684 prev = &p2p->p2ps_adv_list;
2686 if (tmp->id == adv_data->id) {
2687 if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2691 adv_data->next = tmp->next;
2696 if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2697 adv_data->next = tmp->next;
2698 tmp->next = adv_data;
2706 /* No svc_name match found */
2707 adv_data->next = p2p->p2ps_adv_list;
2708 p2p->p2ps_adv_list = adv_data;
2712 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s'",
2713 adv_id, adv_data->config_methods, svc_state, adv_str);
2719 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2721 struct p2p_message msg;
2723 os_memset(&msg, 0, sizeof(msg));
2724 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2727 if (msg.p2p_device_addr) {
2728 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2730 } else if (msg.device_id) {
2731 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2738 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2740 struct wpabuf *p2p_ie;
2743 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2744 P2P_IE_VENDOR_TYPE);
2747 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2748 wpabuf_free(p2p_ie);
2753 static void p2p_clear_go_neg(struct p2p_data *p2p)
2755 p2p->go_neg_peer = NULL;
2756 p2p_clear_timeout(p2p);
2757 p2p_set_state(p2p, P2P_IDLE);
2761 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2763 if (p2p->go_neg_peer == NULL) {
2764 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2765 return; /* No pending Group Formation */
2768 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2770 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2771 MACSTR " (GO Negotiation peer " MACSTR ")",
2773 MAC2STR(p2p->go_neg_peer->intended_addr));
2774 return; /* Ignore unexpected peer address */
2777 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2780 p2p_clear_go_neg(p2p);
2784 void p2p_group_formation_failed(struct p2p_data *p2p)
2786 if (p2p->go_neg_peer == NULL) {
2787 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2788 return; /* No pending Group Formation */
2791 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2792 MAC2STR(p2p->go_neg_peer->intended_addr));
2794 p2p_clear_go_neg(p2p);
2798 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2800 struct p2p_data *p2p;
2802 if (cfg->max_peers < 1 ||
2803 cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2806 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2809 p2p->cfg = (struct p2p_config *) (p2p + 1);
2810 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2812 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2813 if (cfg->manufacturer)
2814 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2815 if (cfg->model_name)
2816 p2p->cfg->model_name = os_strdup(cfg->model_name);
2817 if (cfg->model_number)
2818 p2p->cfg->model_number = os_strdup(cfg->model_number);
2819 if (cfg->serial_number)
2820 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2821 if (cfg->pref_chan) {
2822 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2823 sizeof(struct p2p_channel));
2824 if (p2p->cfg->pref_chan) {
2825 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2826 cfg->num_pref_chan *
2827 sizeof(struct p2p_channel));
2829 p2p->cfg->num_pref_chan = 0;
2832 p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2834 p2p->min_disc_int = 1;
2835 p2p->max_disc_int = 3;
2836 p2p->max_disc_tu = -1;
2838 if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2839 p2p->next_tie_breaker = 0;
2840 p2p->next_tie_breaker &= 0x01;
2841 if (cfg->sd_request)
2842 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2843 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2844 if (cfg->concurrent_operations)
2845 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2846 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2848 dl_list_init(&p2p->devices);
2850 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2851 p2p_expiration_timeout, p2p, NULL);
2853 p2p->go_timeout = 100;
2854 p2p->client_timeout = 20;
2855 p2p->num_p2p_sd_queries = 0;
2857 p2p_dbg(p2p, "initialized");
2858 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2859 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2865 void p2p_deinit(struct p2p_data *p2p)
2867 struct p2ps_advertisement *adv, *prev;
2869 #ifdef CONFIG_WIFI_DISPLAY
2870 wpabuf_free(p2p->wfd_ie_beacon);
2871 wpabuf_free(p2p->wfd_ie_probe_req);
2872 wpabuf_free(p2p->wfd_ie_probe_resp);
2873 wpabuf_free(p2p->wfd_ie_assoc_req);
2874 wpabuf_free(p2p->wfd_ie_invitation);
2875 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2876 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2877 wpabuf_free(p2p->wfd_ie_go_neg);
2878 wpabuf_free(p2p->wfd_dev_info);
2879 wpabuf_free(p2p->wfd_assoc_bssid);
2880 wpabuf_free(p2p->wfd_coupled_sink_info);
2881 #endif /* CONFIG_WIFI_DISPLAY */
2883 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2884 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2885 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2886 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2887 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2889 p2p_free_req_dev_types(p2p);
2890 os_free(p2p->cfg->dev_name);
2891 os_free(p2p->cfg->manufacturer);
2892 os_free(p2p->cfg->model_name);
2893 os_free(p2p->cfg->model_number);
2894 os_free(p2p->cfg->serial_number);
2895 os_free(p2p->cfg->pref_chan);
2896 os_free(p2p->groups);
2897 os_free(p2p->p2ps_prov);
2898 wpabuf_free(p2p->sd_resp);
2899 os_free(p2p->after_scan_tx);
2900 p2p_remove_wps_vendor_extensions(p2p);
2901 os_free(p2p->no_go_freq.range);
2903 adv = p2p->p2ps_adv_list;
2914 void p2p_flush(struct p2p_data *p2p)
2916 struct p2p_device *dev, *prev;
2918 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2920 dl_list_del(&dev->list);
2921 p2p_device_free(p2p, dev);
2923 p2p_free_sd_queries(p2p);
2924 os_free(p2p->after_scan_tx);
2925 p2p->after_scan_tx = NULL;
2929 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2931 struct p2p_device *dev;
2933 dev = p2p_get_device(p2p, addr);
2937 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2939 if (p2p->go_neg_peer == dev) {
2940 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2941 p2p->go_neg_peer = NULL;
2944 dev->wps_method = WPS_NOT_READY;
2946 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2947 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2949 /* Check if after_scan_tx is for this peer. If so free it */
2950 if (p2p->after_scan_tx &&
2951 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2952 os_free(p2p->after_scan_tx);
2953 p2p->after_scan_tx = NULL;
2960 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2962 os_free(p2p->cfg->dev_name);
2964 p2p->cfg->dev_name = os_strdup(dev_name);
2965 if (p2p->cfg->dev_name == NULL)
2968 p2p->cfg->dev_name = NULL;
2973 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2975 os_free(p2p->cfg->manufacturer);
2976 p2p->cfg->manufacturer = NULL;
2978 p2p->cfg->manufacturer = os_strdup(manufacturer);
2979 if (p2p->cfg->manufacturer == NULL)
2987 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2989 os_free(p2p->cfg->model_name);
2990 p2p->cfg->model_name = NULL;
2992 p2p->cfg->model_name = os_strdup(model_name);
2993 if (p2p->cfg->model_name == NULL)
3001 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3003 os_free(p2p->cfg->model_number);
3004 p2p->cfg->model_number = NULL;
3006 p2p->cfg->model_number = os_strdup(model_number);
3007 if (p2p->cfg->model_number == NULL)
3015 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3017 os_free(p2p->cfg->serial_number);
3018 p2p->cfg->serial_number = NULL;
3019 if (serial_number) {
3020 p2p->cfg->serial_number = os_strdup(serial_number);
3021 if (p2p->cfg->serial_number == NULL)
3029 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3031 p2p->cfg->config_methods = config_methods;
3035 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3037 os_memcpy(p2p->cfg->uuid, uuid, 16);
3041 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3043 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3048 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3049 size_t num_dev_types)
3051 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3052 num_dev_types = P2P_SEC_DEVICE_TYPES;
3053 p2p->cfg->num_sec_dev_types = num_dev_types;
3054 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3059 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3063 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3064 wpabuf_free(p2p->wps_vendor_ext[i]);
3065 p2p->wps_vendor_ext[i] = NULL;
3070 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3071 const struct wpabuf *vendor_ext)
3075 if (vendor_ext == NULL)
3078 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3079 if (p2p->wps_vendor_ext[i] == NULL)
3082 if (i >= P2P_MAX_WPS_VENDOR_EXT)
3085 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3086 if (p2p->wps_vendor_ext[i] == NULL)
3093 int p2p_set_country(struct p2p_data *p2p, const char *country)
3095 os_memcpy(p2p->cfg->country, country, 3);
3100 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3102 if (dev->sd_pending_bcast_queries == 0) {
3103 /* Initialize with total number of registered broadcast
3105 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3108 if (p2p_start_sd(p2p, dev) == 0)
3111 if (dev->req_config_methods &&
3112 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3113 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3114 MACSTR " (config methods 0x%x)",
3115 MAC2STR(dev->info.p2p_device_addr),
3116 dev->req_config_methods);
3117 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3125 void p2p_continue_find(struct p2p_data *p2p)
3127 struct p2p_device *dev;
3130 p2p_set_state(p2p, P2P_SEARCH);
3132 /* Continue from the device following the last iteration */
3134 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3135 if (dev == p2p->last_p2p_find_oper) {
3141 if (p2p_pre_find_operation(p2p, dev) > 0) {
3142 p2p->last_p2p_find_oper = dev;
3148 * Wrap around to the beginning of the list and continue until the last
3151 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3152 if (p2p_pre_find_operation(p2p, dev) > 0) {
3153 p2p->last_p2p_find_oper = dev;
3156 if (dev == p2p->last_p2p_find_oper)
3160 p2p_listen_in_find(p2p, 1);
3164 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3166 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3168 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3172 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3173 p2p->sd_peer = NULL;
3174 p2p_continue_find(p2p);
3178 if (p2p->sd_peer == NULL) {
3179 p2p_dbg(p2p, "No SD peer entry known");
3180 p2p_continue_find(p2p);
3184 if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3185 /* Update the pending broadcast SD query count for this device
3187 p2p->sd_peer->sd_pending_bcast_queries--;
3190 * If there are no pending broadcast queries for this device,
3191 * mark it as done (-1).
3193 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3194 p2p->sd_peer->sd_pending_bcast_queries = -1;
3197 /* Wait for response from the peer */
3198 p2p_set_state(p2p, P2P_SD_DURING_FIND);
3199 p2p_set_timeout(p2p, 0, 200000);
3204 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3205 * @p2p: P2P module context from p2p_init()
3207 static void p2p_retry_pd(struct p2p_data *p2p)
3209 struct p2p_device *dev;
3212 * Retry the prov disc req attempt only for the peer that the user had
3216 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3217 if (os_memcmp(p2p->pending_pd_devaddr,
3218 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3220 if (!dev->req_config_methods)
3223 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3224 MACSTR " (config methods 0x%x)",
3225 MAC2STR(dev->info.p2p_device_addr),
3226 dev->req_config_methods);
3227 p2p_send_prov_disc_req(p2p, dev,
3228 dev->flags & P2P_DEV_PD_FOR_JOIN,
3229 p2p->pd_force_freq);
3235 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3237 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3241 * Postpone resetting the pending action state till after we actually
3242 * time out. This allows us to take some action like notifying any
3243 * interested parties about no response to the request.
3245 * When the timer (below) goes off we check in IDLE, SEARCH, or
3246 * LISTEN_ONLY state, which are the only allowed states to issue a PD
3247 * requests in, if this was still pending and then raise notification.
3251 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3253 if (p2p->user_initiated_pd &&
3254 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3256 /* Retry request from timeout to avoid busy loops */
3257 p2p->pending_action_state = P2P_PENDING_PD;
3258 p2p_set_timeout(p2p, 0, 50000);
3259 } else if (p2p->state != P2P_IDLE)
3260 p2p_continue_find(p2p);
3261 else if (p2p->user_initiated_pd) {
3262 p2p->pending_action_state = P2P_PENDING_PD;
3263 p2p_set_timeout(p2p, 0, 300000);
3269 * This postponing, of resetting pending_action_state, needs to be
3270 * done only for user initiated PD requests and not internal ones.
3272 if (p2p->user_initiated_pd)
3273 p2p->pending_action_state = P2P_PENDING_PD;
3275 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3277 /* Wait for response from the peer */
3278 if (p2p->state == P2P_SEARCH)
3279 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3280 p2p_set_timeout(p2p, 0, 200000);
3284 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3286 if (p2p->after_scan_tx_in_progress) {
3287 p2p->after_scan_tx_in_progress = 0;
3288 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3289 p2p_run_after_scan(p2p))
3291 if (p2p->state == P2P_SEARCH) {
3292 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3293 p2p_continue_find(p2p);
3301 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3303 p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3306 if (p2p->send_action_in_progress) {
3307 p2p->send_action_in_progress = 0;
3308 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3311 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3314 goto continue_search;
3316 if (!p2p->cfg->prov_disc_resp_cb ||
3317 p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3318 goto continue_search;
3321 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3325 p2p_check_after_scan_tx_continuation(p2p);
3329 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3330 struct os_reltime *rx_time, int level, const u8 *ies,
3333 if (os_reltime_before(rx_time, &p2p->find_start)) {
3335 * The driver may have cached (e.g., in cfg80211 BSS table) the
3336 * scan results for relatively long time. To avoid reporting
3337 * stale information, update P2P peers only based on results
3338 * that have based on frames received after the last p2p_find
3339 * operation was started.
3341 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3342 " (rx_time=%u.%06u)",
3343 MAC2STR(bssid), (unsigned int) rx_time->sec,
3344 (unsigned int) rx_time->usec);
3348 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3354 void p2p_scan_res_handled(struct p2p_data *p2p)
3356 if (!p2p->p2p_scan_running) {
3357 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3359 p2p->p2p_scan_running = 0;
3360 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3362 if (p2p_run_after_scan(p2p))
3364 if (p2p->state == P2P_SEARCH)
3365 p2p_continue_find(p2p);
3369 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3374 #ifdef CONFIG_WIFI_DISPLAY
3375 if (p2p->wfd_ie_probe_req)
3376 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3377 #endif /* CONFIG_WIFI_DISPLAY */
3379 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3381 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3383 len = p2p_buf_add_ie_hdr(ies);
3385 dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3387 /* P2PS requires Probe Request frames to include SD bit */
3388 if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3389 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3391 p2p_buf_add_capability(ies, dev_capab, 0);
3394 p2p_buf_add_device_id(ies, dev_id);
3395 if (p2p->cfg->reg_class && p2p->cfg->channel)
3396 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3397 p2p->cfg->reg_class,
3399 if (p2p->ext_listen_interval)
3400 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3401 p2p->ext_listen_interval);
3403 if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3404 p2p_buf_add_service_hash(ies, p2p);
3406 /* TODO: p2p_buf_add_operating_channel() if GO */
3407 p2p_buf_update_ie_hdr(ies, len);
3411 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3415 #ifdef CONFIG_WIFI_DISPLAY
3416 if (p2p && p2p->wfd_ie_probe_req)
3417 len += wpabuf_len(p2p->wfd_ie_probe_req);
3418 #endif /* CONFIG_WIFI_DISPLAY */
3420 if (p2p && p2p->vendor_elem &&
3421 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3422 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3428 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3430 return p2p_attr_text(p2p_ie, buf, end);
3434 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3436 struct p2p_device *dev = p2p->go_neg_peer;
3439 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3442 p2p_dbg(p2p, "No pending GO Negotiation");
3447 if (dev->flags & P2P_DEV_USER_REJECTED) {
3448 p2p_set_state(p2p, P2P_IDLE);
3451 } else if (dev->go_neg_req_sent) {
3452 /* Cancel the increment from p2p_connect_send() on failure */
3453 dev->go_neg_req_sent--;
3457 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3458 !is_zero_ether_addr(dev->member_in_go_dev)) {
3459 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3460 MAC2STR(dev->info.p2p_device_addr));
3461 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3462 p2p_send_dev_disc_req(p2p, dev);
3467 * Use P2P find, if needed, to find the other device from its listen
3470 p2p_set_state(p2p, P2P_CONNECT);
3471 timeout = success ? 500000 : 100000;
3472 if (!success && p2p->go_neg_peer &&
3473 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3476 * Peer is expected to wait our response and we will skip the
3477 * listen phase. Add some randomness to the wait time here to
3478 * make it less likely to hit cases where we could end up in
3479 * sync with peer not listening.
3481 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3483 timeout += r % 100000;
3485 p2p_set_timeout(p2p, 0, timeout);
3489 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3491 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3493 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3494 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3497 p2p_set_state(p2p, P2P_CONNECT);
3498 p2p_set_timeout(p2p, 0, 500000);
3502 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3505 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3506 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3507 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3508 } else if (success) {
3509 struct p2p_device *dev;
3510 dev = p2p_get_device(p2p, addr);
3512 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3513 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3518 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3519 enum p2p_send_action_result result)
3521 struct p2p_device *dev;
3523 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3524 if (result == P2P_SEND_ACTION_FAILED) {
3525 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3526 p2p_go_neg_failed(p2p, -1);
3530 dev = p2p->go_neg_peer;
3532 if (result == P2P_SEND_ACTION_NO_ACK) {
3534 * Retry GO Negotiation Confirmation
3535 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3536 * ACK for confirmation.
3538 if (dev && dev->go_neg_conf &&
3539 dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3540 p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3541 dev->go_neg_conf_sent);
3542 p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3543 if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3544 dev->info.p2p_device_addr,
3546 dev->info.p2p_device_addr,
3547 wpabuf_head(dev->go_neg_conf),
3548 wpabuf_len(dev->go_neg_conf), 0) >=
3550 dev->go_neg_conf_sent++;
3553 p2p_dbg(p2p, "Failed to re-send Action frame");
3556 * Continue with the assumption that the first attempt
3557 * went through and just the ACK frame was lost.
3562 * It looks like the TX status for GO Negotiation Confirm is
3563 * often showing failure even when the peer has actually
3564 * received the frame. Since the peer may change channels
3565 * immediately after having received the frame, we may not see
3566 * an Ack for retries, so just dropping a single frame may
3567 * trigger this. To allow the group formation to succeed if the
3568 * peer did indeed receive the frame, continue regardless of
3571 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3574 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3579 p2p_go_complete(p2p, dev);
3583 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3584 const u8 *src, const u8 *bssid,
3585 enum p2p_send_action_result result)
3587 enum p2p_pending_action_state state;
3590 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3591 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3592 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3593 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3594 success = result == P2P_SEND_ACTION_SUCCESS;
3595 state = p2p->pending_action_state;
3596 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3598 case P2P_NO_PENDING_ACTION:
3599 if (p2p->send_action_in_progress) {
3600 p2p->send_action_in_progress = 0;
3601 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3603 p2p_check_after_scan_tx_continuation(p2p);
3605 case P2P_PENDING_GO_NEG_REQUEST:
3606 p2p_go_neg_req_cb(p2p, success);
3608 case P2P_PENDING_GO_NEG_RESPONSE:
3609 p2p_go_neg_resp_cb(p2p, success);
3611 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3612 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3614 case P2P_PENDING_GO_NEG_CONFIRM:
3615 p2p_go_neg_conf_cb(p2p, result);
3617 case P2P_PENDING_SD:
3618 p2p_sd_cb(p2p, success);
3620 case P2P_PENDING_PD:
3621 p2p_prov_disc_cb(p2p, success);
3623 case P2P_PENDING_PD_RESPONSE:
3624 p2p_prov_disc_resp_cb(p2p, success);
3626 case P2P_PENDING_INVITATION_REQUEST:
3627 p2p_invitation_req_cb(p2p, success);
3629 case P2P_PENDING_INVITATION_RESPONSE:
3630 p2p_invitation_resp_cb(p2p, success);
3632 case P2P_PENDING_DEV_DISC_REQUEST:
3633 p2p_dev_disc_req_cb(p2p, success);
3635 case P2P_PENDING_DEV_DISC_RESPONSE:
3636 p2p_dev_disc_resp_cb(p2p, success);
3638 case P2P_PENDING_GO_DISC_REQ:
3639 p2p_go_disc_req_cb(p2p, success);
3643 p2p->after_scan_tx_in_progress = 0;
3647 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3648 unsigned int duration)
3650 if (freq == p2p->pending_client_disc_freq) {
3651 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3652 p2p->pending_client_disc_freq = 0;
3656 if (freq != p2p->pending_listen_freq) {
3657 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3658 freq, duration, p2p->pending_listen_freq);
3662 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3663 p2p->pending_listen_sec, p2p->pending_listen_usec,
3664 p2p->pending_listen_freq);
3666 p2p->drv_in_listen = freq;
3667 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3669 * Add 20 msec extra wait to avoid race condition with driver
3670 * remain-on-channel end event, i.e., give driver more time to
3671 * complete the operation before our timeout expires.
3673 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3674 p2p->pending_listen_usec + 20000);
3677 p2p->pending_listen_freq = 0;
3681 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3683 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3684 p2p->drv_in_listen = 0;
3686 return 0; /* Internal timeout will trigger the next step */
3688 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3689 if (p2p->go_neg_peer->connect_reqs >= 120) {
3690 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3691 p2p_go_neg_failed(p2p, -1);
3695 p2p_set_state(p2p, P2P_CONNECT);
3696 p2p_connect_send(p2p, p2p->go_neg_peer);
3698 } else if (p2p->state == P2P_SEARCH) {
3699 if (p2p->p2p_scan_running) {
3701 * Search is already in progress. This can happen if
3702 * an Action frame RX is reported immediately after
3703 * the end of a remain-on-channel operation and the
3704 * response frame to that is sent using an offchannel
3705 * operation while in p2p_find. Avoid an attempt to
3706 * restart a scan here.
3708 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3711 if (p2p->pending_listen_freq) {
3713 * Better wait a bit if the driver is unable to start
3714 * offchannel operation for some reason. p2p_search()
3715 * will be started from internal timeout.
3717 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3718 p2p_set_timeout(p2p, 0, 100000);
3721 if (p2p->search_delay) {
3722 p2p_dbg(p2p, "Delay search operation by %u ms",
3724 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3725 (p2p->search_delay % 1000) * 1000);
3736 static void p2p_timeout_connect(struct p2p_data *p2p)
3738 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3739 if (p2p->go_neg_peer &&
3740 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3741 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3742 p2p_go_neg_failed(p2p, -1);
3745 if (p2p->go_neg_peer &&
3746 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3747 p2p->go_neg_peer->connect_reqs < 120) {
3748 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3749 p2p_connect_send(p2p, p2p->go_neg_peer);
3752 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3753 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3754 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3755 p2p_set_timeout(p2p, 0, 30000);
3758 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3759 p2p_listen_in_find(p2p, 0);
3763 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3765 if (p2p->go_neg_peer) {
3766 if (p2p->drv_in_listen) {
3767 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3771 if (p2p->go_neg_peer->connect_reqs >= 120) {
3772 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3773 p2p_go_neg_failed(p2p, -1);
3777 p2p_set_state(p2p, P2P_CONNECT);
3778 p2p_connect_send(p2p, p2p->go_neg_peer);
3780 p2p_set_state(p2p, P2P_IDLE);
3784 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3786 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3788 if (p2p->cfg->is_concurrent_session_active &&
3789 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3790 p2p_set_timeout(p2p, 0, 500000);
3792 p2p_set_timeout(p2p, 0, 200000);
3796 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3798 struct p2p_device *dev = p2p->go_neg_peer;
3801 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3805 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3806 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3807 p2p_listen_in_find(p2p, 0);
3811 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3813 p2p_dbg(p2p, "Service Discovery Query timeout");
3815 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3816 p2p->sd_peer = NULL;
3818 p2p_continue_find(p2p);
3822 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3824 p2p_dbg(p2p, "Provision Discovery Request timeout");
3825 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3826 p2p_continue_find(p2p);
3830 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3835 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3838 * For user initiated PD requests that we have not gotten any responses
3839 * for while in IDLE state, we retry them a couple of times before
3842 if (!p2p->user_initiated_pd)
3845 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3847 if (p2p->pd_retries) {
3851 struct p2p_device *dev;
3854 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3855 if (os_memcmp(p2p->pending_pd_devaddr,
3856 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3858 if (dev->req_config_methods &&
3859 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3863 if (p2p->p2ps_prov) {
3864 adv_id = p2p->p2ps_prov->adv_id;
3865 adv_mac = p2p->p2ps_prov->adv_mac;
3868 if (p2p->cfg->prov_disc_fail)
3869 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3870 p2p->pending_pd_devaddr,
3872 P2P_PROV_DISC_TIMEOUT_JOIN :
3873 P2P_PROV_DISC_TIMEOUT,
3874 adv_id, adv_mac, NULL);
3875 p2p_reset_pending_pd(p2p);
3880 static void p2p_timeout_invite(struct p2p_data *p2p)
3882 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3883 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3884 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3886 * Better remain on operating channel instead of listen channel
3887 * when running a group.
3889 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3890 p2p_set_timeout(p2p, 0, 100000);
3893 p2p_listen_in_find(p2p, 0);
3897 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3899 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3900 p2p_set_state(p2p, P2P_INVITE);
3901 p2p_invite_send(p2p, p2p->invite_peer,
3902 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3904 if (p2p->invite_peer) {
3905 p2p_dbg(p2p, "Invitation Request retry limit reached");
3906 if (p2p->cfg->invitation_result)
3907 p2p->cfg->invitation_result(
3908 p2p->cfg->cb_ctx, -1, NULL, NULL,
3909 p2p->invite_peer->info.p2p_device_addr,
3912 p2p_set_state(p2p, P2P_IDLE);
3917 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3919 struct p2p_data *p2p = eloop_ctx;
3921 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3924 if (p2p->drv_in_listen) {
3925 p2p_dbg(p2p, "Driver is still in listen state - stop it");
3926 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
3929 switch (p2p->state) {
3931 /* Check if we timed out waiting for PD req */
3932 if (p2p->pending_action_state == P2P_PENDING_PD)
3933 p2p_timeout_prov_disc_req(p2p);
3936 /* Check if we timed out waiting for PD req */
3937 if (p2p->pending_action_state == P2P_PENDING_PD)
3938 p2p_timeout_prov_disc_req(p2p);
3939 if (p2p->search_delay && !p2p->in_search_delay) {
3940 p2p_dbg(p2p, "Delay search operation by %u ms",
3942 p2p->in_search_delay = 1;
3943 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3944 (p2p->search_delay % 1000) * 1000);
3947 p2p->in_search_delay = 0;
3951 p2p_timeout_connect(p2p);
3953 case P2P_CONNECT_LISTEN:
3954 p2p_timeout_connect_listen(p2p);
3958 case P2P_LISTEN_ONLY:
3959 /* Check if we timed out waiting for PD req */
3960 if (p2p->pending_action_state == P2P_PENDING_PD)
3961 p2p_timeout_prov_disc_req(p2p);
3963 if (p2p->ext_listen_only) {
3964 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3965 p2p->ext_listen_only = 0;
3966 p2p_set_state(p2p, P2P_IDLE);
3969 case P2P_WAIT_PEER_CONNECT:
3970 p2p_timeout_wait_peer_connect(p2p);
3972 case P2P_WAIT_PEER_IDLE:
3973 p2p_timeout_wait_peer_idle(p2p);
3975 case P2P_SD_DURING_FIND:
3976 p2p_timeout_sd_during_find(p2p);
3978 case P2P_PROVISIONING:
3980 case P2P_PD_DURING_FIND:
3981 p2p_timeout_prov_disc_during_find(p2p);
3984 p2p_timeout_invite(p2p);
3986 case P2P_INVITE_LISTEN:
3987 p2p_timeout_invite_listen(p2p);
3993 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3995 struct p2p_device *dev;
3997 dev = p2p_get_device(p2p, peer_addr);
3998 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3999 MACSTR, MAC2STR(peer_addr));
4001 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4004 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4005 dev->flags |= P2P_DEV_USER_REJECTED;
4010 const char * p2p_wps_method_text(enum p2p_wps_method method)
4015 case WPS_PIN_DISPLAY:
4017 case WPS_PIN_KEYPAD:
4031 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4046 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4047 const u8 *addr, int next)
4049 struct p2p_device *dev;
4052 dev = p2p_get_device(p2p, addr);
4054 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4057 dev = dl_list_first(&dev->list, struct p2p_device, list);
4058 if (&dev->list == &p2p->devices)
4069 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4070 char *buf, size_t buflen)
4072 struct p2p_device *dev;
4075 struct os_reltime now;
4080 dev = (struct p2p_device *) (((u8 *) info) -
4081 offsetof(struct p2p_device, info));
4086 os_get_reltime(&now);
4087 res = os_snprintf(pos, end - pos,
4091 "interface_addr=" MACSTR "\n"
4092 "member_in_go_dev=" MACSTR "\n"
4093 "member_in_go_iface=" MACSTR "\n"
4094 "go_neg_req_sent=%d\n"
4097 "intended_addr=" MACSTR "\n"
4100 "req_config_methods=0x%x\n"
4101 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4103 "invitation_reqs=%u\n",
4104 (int) (now.sec - dev->last_seen.sec),
4106 p2p_wps_method_text(dev->wps_method),
4107 MAC2STR(dev->interface_addr),
4108 MAC2STR(dev->member_in_go_dev),
4109 MAC2STR(dev->member_in_go_iface),
4110 dev->go_neg_req_sent,
4111 p2p_go_state_text(dev->go_state),
4113 MAC2STR(dev->intended_addr),
4114 dev->country[0] ? dev->country[0] : '_',
4115 dev->country[1] ? dev->country[1] : '_',
4117 dev->req_config_methods,
4118 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4119 "[PROBE_REQ_ONLY]" : "",
4120 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4121 dev->flags & P2P_DEV_NOT_YET_READY ?
4122 "[NOT_YET_READY]" : "",
4123 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4124 "[PD_PEER_DISPLAY]" : "",
4125 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4126 "[PD_PEER_KEYPAD]" : "",
4127 dev->flags & P2P_DEV_PD_PEER_P2PS ?
4128 "[PD_PEER_P2PS]" : "",
4129 dev->flags & P2P_DEV_USER_REJECTED ?
4130 "[USER_REJECTED]" : "",
4131 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4132 "[PEER_WAITING_RESPONSE]" : "",
4133 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4134 "[PREFER_PERSISTENT_GROUP]" : "",
4135 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4136 "[WAIT_GO_NEG_RESPONSE]" : "",
4137 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4138 "[WAIT_GO_NEG_CONFIRM]" : "",
4139 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4140 "[GROUP_CLIENT_ONLY]" : "",
4141 dev->flags & P2P_DEV_FORCE_FREQ ?
4142 "[FORCE_FREQ]" : "",
4143 dev->flags & P2P_DEV_PD_FOR_JOIN ?
4144 "[PD_FOR_JOIN]" : "",
4146 dev->invitation_reqs);
4147 if (os_snprintf_error(end - pos, res))
4151 if (dev->ext_listen_period) {
4152 res = os_snprintf(pos, end - pos,
4153 "ext_listen_period=%u\n"
4154 "ext_listen_interval=%u\n",
4155 dev->ext_listen_period,
4156 dev->ext_listen_interval);
4157 if (os_snprintf_error(end - pos, res))
4162 if (dev->oper_ssid_len) {
4163 res = os_snprintf(pos, end - pos,
4165 wpa_ssid_txt(dev->oper_ssid,
4166 dev->oper_ssid_len));
4167 if (os_snprintf_error(end - pos, res))
4172 #ifdef CONFIG_WIFI_DISPLAY
4173 if (dev->info.wfd_subelems) {
4174 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4175 if (os_snprintf_error(end - pos, res))
4179 pos += wpa_snprintf_hex(pos, end - pos,
4180 wpabuf_head(dev->info.wfd_subelems),
4181 wpabuf_len(dev->info.wfd_subelems));
4183 res = os_snprintf(pos, end - pos, "\n");
4184 if (os_snprintf_error(end - pos, res))
4188 #endif /* CONFIG_WIFI_DISPLAY */
4194 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4196 return p2p_get_device(p2p, addr) != NULL;
4200 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4203 p2p_dbg(p2p, "Client discoverability enabled");
4204 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4206 p2p_dbg(p2p, "Client discoverability disabled");
4207 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4212 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4213 u32 duration2, u32 interval2)
4216 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4219 req = wpabuf_alloc(100);
4223 if (duration1 || interval1) {
4224 os_memset(&desc1, 0, sizeof(desc1));
4225 desc1.count_type = 1;
4226 desc1.duration = duration1;
4227 desc1.interval = interval1;
4230 if (duration2 || interval2) {
4231 os_memset(&desc2, 0, sizeof(desc2));
4232 desc2.count_type = 2;
4233 desc2.duration = duration2;
4234 desc2.interval = interval2;
4239 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4240 len = p2p_buf_add_ie_hdr(req);
4241 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4242 p2p_buf_update_ie_hdr(req, len);
4248 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4249 const u8 *own_interface_addr, unsigned int freq,
4250 u32 duration1, u32 interval1, u32 duration2,
4255 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4256 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4258 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4259 freq, duration1, interval1, duration2, interval2);
4261 req = p2p_build_presence_req(duration1, interval1, duration2,
4266 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4267 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4269 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4270 p2p_dbg(p2p, "Failed to send Action frame");
4278 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4279 size_t noa_len, u8 dialog_token)
4281 struct wpabuf *resp;
4284 resp = wpabuf_alloc(100 + noa_len);
4288 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4289 len = p2p_buf_add_ie_hdr(resp);
4290 p2p_buf_add_status(resp, status);
4292 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4293 wpabuf_put_le16(resp, noa_len);
4294 wpabuf_put_data(resp, noa, noa_len);
4296 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4297 p2p_buf_update_ie_hdr(resp, len);
4303 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4304 const u8 *sa, const u8 *data, size_t len,
4307 struct p2p_message msg;
4309 struct wpabuf *resp;
4311 struct p2p_group *group = NULL;
4316 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4318 for (g = 0; g < p2p->num_groups; g++) {
4319 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4321 group = p2p->groups[g];
4325 if (group == NULL) {
4326 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4327 MACSTR, MAC2STR(da));
4331 if (p2p_parse(data, len, &msg) < 0) {
4332 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4333 status = P2P_SC_FAIL_INVALID_PARAMS;
4338 if (msg.noa == NULL) {
4339 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4340 status = P2P_SC_FAIL_INVALID_PARAMS;
4344 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4347 if (p2p->cfg->get_noa)
4348 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4352 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4353 noa_len > 0 ? noa_len : 0,
4356 p2p_parse_free(&msg);
4360 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4361 if (p2p_send_action(p2p, rx_freq, sa, da, da,
4362 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4363 p2p_dbg(p2p, "Failed to send Action frame");
4369 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4370 const u8 *sa, const u8 *data, size_t len)
4372 struct p2p_message msg;
4374 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4376 if (p2p_parse(data, len, &msg) < 0) {
4377 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4381 if (msg.status == NULL || msg.noa == NULL) {
4382 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4383 p2p_parse_free(&msg);
4387 if (p2p->cfg->presence_resp) {
4388 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4389 msg.noa, msg.noa_len);
4393 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4395 p2p_parse_free(&msg);
4399 p2p_dbg(p2p, "P2P Presence Request was accepted");
4400 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4401 msg.noa, msg.noa_len);
4402 /* TODO: process NoA */
4403 p2p_parse_free(&msg);
4407 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4409 struct p2p_data *p2p = eloop_ctx;
4411 if (p2p->ext_listen_interval) {
4412 /* Schedule next extended listen timeout */
4413 eloop_register_timeout(p2p->ext_listen_interval_sec,
4414 p2p->ext_listen_interval_usec,
4415 p2p_ext_listen_timeout, p2p, NULL);
4418 if ((p2p->cfg->is_p2p_in_progress &&
4419 p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4420 (p2p->pending_action_state == P2P_PENDING_PD &&
4421 p2p->pd_retries > 0)) {
4422 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4423 p2p_state_txt(p2p->state));
4427 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4429 * This should not really happen, but it looks like the Listen
4430 * command may fail is something else (e.g., a scan) was
4431 * running at an inconvenient time. As a workaround, allow new
4432 * Extended Listen operation to be started.
4434 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4435 p2p->ext_listen_only = 0;
4436 p2p_set_state(p2p, P2P_IDLE);
4439 if (p2p->state != P2P_IDLE) {
4440 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4444 p2p_dbg(p2p, "Extended Listen timeout");
4445 p2p->ext_listen_only = 1;
4446 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4447 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4448 p2p->ext_listen_only = 0;
4453 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4454 unsigned int interval)
4456 if (period > 65535 || interval > 65535 || period > interval ||
4457 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4458 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4463 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4465 if (interval == 0) {
4466 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4467 p2p->ext_listen_period = 0;
4468 p2p->ext_listen_interval = 0;
4472 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4474 p2p->ext_listen_period = period;
4475 p2p->ext_listen_interval = interval;
4476 p2p->ext_listen_interval_sec = interval / 1000;
4477 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4479 eloop_register_timeout(p2p->ext_listen_interval_sec,
4480 p2p->ext_listen_interval_usec,
4481 p2p_ext_listen_timeout, p2p, NULL);
4487 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4488 const u8 *ie, size_t ie_len)
4490 struct p2p_message msg;
4492 if (bssid == NULL || ie == NULL)
4495 os_memset(&msg, 0, sizeof(msg));
4496 if (p2p_parse_ies(ie, ie_len, &msg))
4498 if (msg.minor_reason_code == NULL) {
4499 p2p_parse_free(&msg);
4503 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4504 " reason_code=%u minor_reason_code=%u",
4505 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4507 p2p_parse_free(&msg);
4511 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4512 const u8 *ie, size_t ie_len)
4514 struct p2p_message msg;
4516 if (bssid == NULL || ie == NULL)
4519 os_memset(&msg, 0, sizeof(msg));
4520 if (p2p_parse_ies(ie, ie_len, &msg))
4522 if (msg.minor_reason_code == NULL) {
4523 p2p_parse_free(&msg);
4527 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4528 " reason_code=%u minor_reason_code=%u",
4529 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4531 p2p_parse_free(&msg);
4535 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4538 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4539 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4541 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4542 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4547 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4550 return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4554 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4557 if (p2p_channel_to_freq(reg_class, channel) < 0)
4561 * Listen channel was set in configuration or set by control interface;
4562 * cannot override it.
4564 if (p2p->cfg->channel_forced && forced == 0) {
4566 "Listen channel was previously configured - do not override based on optimization");
4570 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4571 reg_class, channel);
4573 if (p2p->state == P2P_IDLE) {
4574 p2p->cfg->reg_class = reg_class;
4575 p2p->cfg->channel = channel;
4576 p2p->cfg->channel_forced = forced;
4578 p2p_dbg(p2p, "Defer setting listen channel");
4579 p2p->pending_reg_class = reg_class;
4580 p2p->pending_channel = channel;
4581 p2p->pending_channel_forced = forced;
4588 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4590 return p2p->cfg->channel;
4594 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4596 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4597 if (postfix == NULL) {
4598 p2p->cfg->ssid_postfix_len = 0;
4601 if (len > sizeof(p2p->cfg->ssid_postfix))
4603 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4604 p2p->cfg->ssid_postfix_len = len;
4609 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4612 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4615 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4616 op_reg_class, op_channel);
4617 p2p->cfg->op_reg_class = op_reg_class;
4618 p2p->cfg->op_channel = op_channel;
4619 p2p->cfg->cfg_op_channel = cfg_op_channel;
4624 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4625 const struct p2p_channel *pref_chan)
4627 struct p2p_channel *n;
4630 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4633 os_memcpy(n, pref_chan,
4634 num_pref_chan * sizeof(struct p2p_channel));
4638 os_free(p2p->cfg->pref_chan);
4639 p2p->cfg->pref_chan = n;
4640 p2p->cfg->num_pref_chan = num_pref_chan;
4646 int p2p_set_no_go_freq(struct p2p_data *p2p,
4647 const struct wpa_freq_range_list *list)
4649 struct wpa_freq_range *tmp;
4651 if (list == NULL || list->num == 0) {
4652 os_free(p2p->no_go_freq.range);
4653 p2p->no_go_freq.range = NULL;
4654 p2p->no_go_freq.num = 0;
4658 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4661 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4662 os_free(p2p->no_go_freq.range);
4663 p2p->no_go_freq.range = tmp;
4664 p2p->no_go_freq.num = list->num;
4665 p2p_dbg(p2p, "Updated no GO chan list");
4671 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4674 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4675 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4677 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4682 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4685 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4688 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4693 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4695 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4696 if (is_zero_ether_addr(p2p->peer_filter))
4697 p2p_dbg(p2p, "Disable peer filter");
4699 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4700 MAC2STR(p2p->peer_filter));
4704 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4706 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4707 if (p2p->cross_connect == enabled)
4709 p2p->cross_connect = enabled;
4710 /* TODO: may need to tear down any action group where we are GO(?) */
4714 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4716 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4719 if (dev->oper_freq <= 0)
4721 return dev->oper_freq;
4725 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4727 p2p_dbg(p2p, "Intra BSS distribution %s",
4728 enabled ? "enabled" : "disabled");
4729 p2p->cfg->p2p_intra_bss = enabled;
4733 void p2p_update_channel_list(struct p2p_data *p2p,
4734 const struct p2p_channels *chan,
4735 const struct p2p_channels *cli_chan)
4737 p2p_dbg(p2p, "Update channel list");
4738 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4739 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4740 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4741 sizeof(struct p2p_channels));
4742 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4746 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4747 const u8 *src, const u8 *bssid, const u8 *buf,
4748 size_t len, unsigned int wait_time)
4750 if (p2p->p2p_scan_running) {
4751 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4752 if (p2p->after_scan_tx) {
4753 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4754 os_free(p2p->after_scan_tx);
4756 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4758 if (p2p->after_scan_tx == NULL)
4760 p2p->after_scan_tx->freq = freq;
4761 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4762 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4763 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4764 p2p->after_scan_tx->len = len;
4765 p2p->after_scan_tx->wait_time = wait_time;
4766 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4770 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4771 buf, len, wait_time);
4775 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4778 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4779 freq_24, freq_5, freq_overall);
4780 p2p->best_freq_24 = freq_24;
4781 p2p->best_freq_5 = freq_5;
4782 p2p->best_freq_overall = freq_overall;
4786 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4788 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4789 p2p->own_freq_preference = freq;
4793 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4795 if (p2p == NULL || p2p->go_neg_peer == NULL)
4797 return p2p->go_neg_peer->info.p2p_device_addr;
4801 const struct p2p_peer_info *
4802 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4804 struct p2p_device *dev;
4807 dev = p2p_get_device(p2p, addr);
4812 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4818 dev = dl_list_first(&dev->list,
4821 if (!dev || &dev->list == &p2p->devices)
4823 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4826 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4829 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4830 dev = dl_list_first(&dev->list,
4833 if (!dev || &dev->list == &p2p->devices)
4842 int p2p_in_progress(struct p2p_data *p2p)
4846 if (p2p->state == P2P_SEARCH)
4848 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4852 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4856 p2p->go_timeout = go_timeout;
4857 p2p->client_timeout = client_timeout;
4862 #ifdef CONFIG_WIFI_DISPLAY
4864 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4867 struct p2p_group *group;
4869 for (g = 0; g < p2p->num_groups; g++) {
4870 group = p2p->groups[g];
4871 p2p_group_force_beacon_update_ies(group);
4876 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4878 wpabuf_free(p2p->wfd_ie_beacon);
4879 p2p->wfd_ie_beacon = ie;
4880 p2p_update_wfd_ie_groups(p2p);
4885 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4887 wpabuf_free(p2p->wfd_ie_probe_req);
4888 p2p->wfd_ie_probe_req = ie;
4893 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4895 wpabuf_free(p2p->wfd_ie_probe_resp);
4896 p2p->wfd_ie_probe_resp = ie;
4897 p2p_update_wfd_ie_groups(p2p);
4902 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4904 wpabuf_free(p2p->wfd_ie_assoc_req);
4905 p2p->wfd_ie_assoc_req = ie;
4910 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4912 wpabuf_free(p2p->wfd_ie_invitation);
4913 p2p->wfd_ie_invitation = ie;
4918 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4920 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4921 p2p->wfd_ie_prov_disc_req = ie;
4926 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4928 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4929 p2p->wfd_ie_prov_disc_resp = ie;
4934 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4936 wpabuf_free(p2p->wfd_ie_go_neg);
4937 p2p->wfd_ie_go_neg = ie;
4942 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4944 wpabuf_free(p2p->wfd_dev_info);
4946 p2p->wfd_dev_info = wpabuf_dup(elem);
4947 if (p2p->wfd_dev_info == NULL)
4950 p2p->wfd_dev_info = NULL;
4956 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4958 wpabuf_free(p2p->wfd_assoc_bssid);
4960 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4961 if (p2p->wfd_assoc_bssid == NULL)
4964 p2p->wfd_assoc_bssid = NULL;
4970 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4971 const struct wpabuf *elem)
4973 wpabuf_free(p2p->wfd_coupled_sink_info);
4975 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4976 if (p2p->wfd_coupled_sink_info == NULL)
4979 p2p->wfd_coupled_sink_info = NULL;
4984 #endif /* CONFIG_WIFI_DISPLAY */
4987 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4990 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4993 p2p->min_disc_int = min_disc_int;
4994 p2p->max_disc_int = max_disc_int;
4995 p2p->max_disc_tu = max_disc_tu;
4996 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4997 min_disc_int, max_disc_int, max_disc_tu);
5003 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5008 if (!p2p->cfg->debug_print)
5012 vsnprintf(buf, sizeof(buf), fmt, ap);
5013 buf[sizeof(buf) - 1] = '\0';
5015 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5019 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5024 if (!p2p->cfg->debug_print)
5028 vsnprintf(buf, sizeof(buf), fmt, ap);
5029 buf[sizeof(buf) - 1] = '\0';
5031 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5035 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5040 if (!p2p->cfg->debug_print)
5044 vsnprintf(buf, sizeof(buf), fmt, ap);
5045 buf[sizeof(buf) - 1] = '\0';
5047 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5051 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5052 void (*peer_callback)(struct p2p_peer_info *peer,
5056 struct p2p_device *dev, *n;
5058 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5059 peer_callback(&dev->info, user_data);
5064 #ifdef CONFIG_WPS_NFC
5066 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5068 const u8 *go_dev_addr,
5069 const u8 *ssid, size_t ssid_len)
5072 u8 op_class, channel;
5073 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5075 buf = wpabuf_alloc(1000);
5079 op_class = p2p->cfg->reg_class;
5080 channel = p2p->cfg->channel;
5082 p2p_buf_add_capability(buf, p2p->dev_capab &
5083 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5084 p2p_buf_add_device_info(buf, p2p, NULL);
5086 if (p2p->num_groups > 0) {
5087 int freq = p2p_group_get_freq(p2p->groups[0]);
5088 role = P2P_GO_IN_A_GROUP;
5089 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5091 "Unknown GO operating frequency %d MHz for NFC handover",
5096 } else if (client_freq > 0) {
5097 role = P2P_CLIENT_IN_A_GROUP;
5098 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5100 "Unknown client operating frequency %d MHz for NFC handover",
5107 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5110 if (p2p->num_groups > 0) {
5111 /* Limit number of clients to avoid very long message */
5112 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5113 p2p_group_buf_add_id(p2p->groups[0], buf);
5114 } else if (client_freq > 0 &&
5115 go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5116 ssid && ssid_len > 0) {
5118 * Add the optional P2P Group ID to indicate in which group this
5119 * device is a P2P Client.
5121 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5128 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5130 const u8 *go_dev_addr,
5131 const u8 *ssid, size_t ssid_len)
5133 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5138 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5140 const u8 *go_dev_addr,
5141 const u8 *ssid, size_t ssid_len)
5143 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5148 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5149 struct p2p_nfc_params *params)
5151 struct p2p_message msg;
5152 struct p2p_device *dev;
5153 const u8 *p2p_dev_addr;
5155 enum p2p_role_indication role;
5157 params->next_step = NO_ACTION;
5159 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5160 params->p2p_attr, params->p2p_len, &msg)) {
5161 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5162 p2p_parse_free(&msg);
5166 if (msg.p2p_device_addr)
5167 p2p_dev_addr = msg.p2p_device_addr;
5168 else if (msg.device_id)
5169 p2p_dev_addr = msg.device_id;
5171 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5172 p2p_parse_free(&msg);
5176 if (msg.oob_dev_password) {
5177 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5178 msg.oob_dev_password_len);
5179 params->oob_dev_pw_len = msg.oob_dev_password_len;
5182 dev = p2p_create_device(p2p, p2p_dev_addr);
5184 p2p_parse_free(&msg);
5188 params->peer = &dev->info;
5190 os_get_reltime(&dev->last_seen);
5191 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5192 p2p_copy_wps_info(p2p, dev, 0, &msg);
5194 if (!msg.oob_go_neg_channel) {
5195 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5199 if (msg.oob_go_neg_channel[3] == 0 &&
5200 msg.oob_go_neg_channel[4] == 0)
5203 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5204 msg.oob_go_neg_channel[4]);
5206 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5209 role = msg.oob_go_neg_channel[5];
5211 if (role == P2P_GO_IN_A_GROUP) {
5212 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5213 params->go_freq = freq;
5214 } else if (role == P2P_CLIENT_IN_A_GROUP) {
5215 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5217 params->go_freq = freq;
5219 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5220 dev->oob_go_neg_freq = freq;
5222 if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5223 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5226 p2p_dbg(p2p, "Own listen channel not known");
5229 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5230 dev->oob_go_neg_freq = freq;
5234 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5235 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5236 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5237 params->go_ssid_len);
5240 if (dev->flags & P2P_DEV_USER_REJECTED) {
5241 p2p_dbg(p2p, "Do not report rejected device");
5242 p2p_parse_free(&msg);
5246 if (!(dev->flags & P2P_DEV_REPORTED)) {
5247 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5248 !(dev->flags & P2P_DEV_REPORTED_ONCE));
5249 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5251 p2p_parse_free(&msg);
5253 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5254 params->next_step = BOTH_GO;
5255 else if (role == P2P_GO_IN_A_GROUP)
5256 params->next_step = JOIN_GROUP;
5257 else if (role == P2P_CLIENT_IN_A_GROUP) {
5258 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5259 params->next_step = PEER_CLIENT;
5260 } else if (p2p->num_groups > 0)
5261 params->next_step = AUTH_JOIN;
5262 else if (params->sel)
5263 params->next_step = INIT_GO_NEG;
5265 params->next_step = RESP_GO_NEG;
5271 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5273 const u8 *own_interface_addr)
5276 p2p->authorized_oob_dev_pw_id = dev_pw_id;
5277 if (dev_pw_id == 0) {
5278 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5282 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5285 p2p->go_intent = go_intent;
5286 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5289 #endif /* CONFIG_WPS_NFC */
5292 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5294 if (len < 8 || len > 63)
5296 p2p->cfg->passphrase_len = len;
5301 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5303 p2p->vendor_elem = vendor_elem;
5307 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5309 struct p2p_data *p2p = eloop_ctx;
5312 "Timeout on waiting peer to become ready for GO Negotiation");
5313 p2p_go_neg_failed(p2p, -1);