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/defs.h"
14 #include "common/ieee802_11_defs.h"
15 #include "common/ieee802_11_common.h"
16 #include "common/wpa_ctrl.h"
17 #include "crypto/sha256.h"
18 #include "crypto/crypto.h"
19 #include "wps/wps_i.h"
24 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
25 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
26 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
27 const u8 *sa, const u8 *data, size_t len,
29 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
30 const u8 *sa, const u8 *data,
32 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
33 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
37 * p2p_scan recovery timeout
39 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
40 * timeout for this to avoid hitting P2P timeout unnecessarily.
42 #define P2P_SCAN_TIMEOUT 35
45 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
46 * entries will be removed
48 #ifndef P2P_PEER_EXPIRATION_AGE
49 #define P2P_PEER_EXPIRATION_AGE 60
50 #endif /* P2P_PEER_EXPIRATION_AGE */
53 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 const char * p2p_state_txt(int state)
115 case P2P_CONNECT_LISTEN:
116 return "CONNECT_LISTEN";
119 case P2P_LISTEN_ONLY:
120 return "LISTEN_ONLY";
121 case P2P_WAIT_PEER_CONNECT:
122 return "WAIT_PEER_CONNECT";
123 case P2P_WAIT_PEER_IDLE:
124 return "WAIT_PEER_IDLE";
125 case P2P_SD_DURING_FIND:
126 return "SD_DURING_FIND";
127 case P2P_PROVISIONING:
128 return "PROVISIONING";
129 case P2P_PD_DURING_FIND:
130 return "PD_DURING_FIND";
133 case P2P_INVITE_LISTEN:
134 return "INVITE_LISTEN";
141 const char * p2p_get_state_txt(struct p2p_data *p2p)
143 return p2p_state_txt(p2p->state);
147 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p)
149 return p2p ? p2p->p2ps_adv_list : NULL;
153 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr)
155 if (p2p && intended_addr)
156 os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN);
160 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
162 struct p2p_device *dev = NULL;
167 dev = p2p_get_device(p2p, addr);
169 return dev->wps_prov_info;
175 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
177 struct p2p_device *dev = NULL;
182 dev = p2p_get_device(p2p, addr);
184 dev->wps_prov_info = 0;
188 void p2p_set_state(struct p2p_data *p2p, int new_state)
190 p2p_dbg(p2p, "State %s -> %s",
191 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
192 p2p->state = new_state;
194 if (new_state == P2P_IDLE && p2p->pending_channel) {
195 p2p_dbg(p2p, "Apply change in listen channel");
196 p2p->cfg->reg_class = p2p->pending_reg_class;
197 p2p->cfg->channel = p2p->pending_channel;
198 p2p->pending_reg_class = 0;
199 p2p->pending_channel = 0;
204 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
206 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
207 p2p_state_txt(p2p->state), sec, usec);
208 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
209 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
213 void p2p_clear_timeout(struct p2p_data *p2p)
215 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
216 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
220 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
222 struct p2p_go_neg_results res;
223 struct p2p_device *peer = p2p->go_neg_peer;
228 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
229 if (p2p->state != P2P_SEARCH) {
231 * Clear timeouts related to GO Negotiation if no new p2p_find
234 p2p_clear_timeout(p2p);
235 p2p_set_state(p2p, P2P_IDLE);
238 peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
239 peer->wps_method = WPS_NOT_READY;
241 wpabuf_free(peer->go_neg_conf);
242 peer->go_neg_conf = NULL;
243 p2p->go_neg_peer = NULL;
245 os_memset(&res, 0, sizeof(res));
247 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
248 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
249 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
253 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
259 p2p_dbg(p2p, "Starting short listen state (state=%s)",
260 p2p_state_txt(p2p->state));
262 if (p2p->pending_listen_freq) {
263 /* We have a pending p2p_listen request */
264 p2p_dbg(p2p, "p2p_listen command pending already");
268 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
270 p2p_dbg(p2p, "Unknown regulatory class/channel");
274 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
276 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
277 p2p->min_disc_int) * 100;
278 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
279 tu = p2p->max_disc_tu;
280 if (!dev_disc && tu < 100)
281 tu = 100; /* Need to wait in non-device discovery use cases */
282 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
283 tu = p2p->cfg->max_listen * 1000 / 1024;
286 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
287 p2p_set_timeout(p2p, 0, 0);
291 ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
295 p2p->pending_listen_freq = freq;
296 p2p->pending_listen_sec = 0;
297 p2p->pending_listen_usec = 1024 * tu;
299 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
301 p2p_dbg(p2p, "Failed to start listen mode");
302 p2p->pending_listen_freq = 0;
308 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
313 p2p_dbg(p2p, "Going to listen(only) state");
315 if (p2p->pending_listen_freq) {
316 /* We have a pending p2p_listen request */
317 p2p_dbg(p2p, "p2p_listen command pending already");
321 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
323 p2p_dbg(p2p, "Unknown regulatory class/channel");
327 p2p->pending_listen_sec = timeout / 1000;
328 p2p->pending_listen_usec = (timeout % 1000) * 1000;
330 if (p2p->p2p_scan_running) {
331 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
332 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
335 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
336 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
340 ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
344 p2p->pending_listen_freq = freq;
346 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
347 p2p_dbg(p2p, "Failed to start listen mode");
348 p2p->pending_listen_freq = 0;
354 p2p_set_state(p2p, P2P_LISTEN_ONLY);
360 static void p2p_device_clear_reported(struct p2p_data *p2p)
362 struct p2p_device *dev;
363 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
364 dev->flags &= ~P2P_DEV_REPORTED;
371 * p2p_get_device - Fetch a peer entry
372 * @p2p: P2P module context from p2p_init()
373 * @addr: P2P Device Address of the peer
374 * Returns: Pointer to the device entry or %NULL if not found
376 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
378 struct p2p_device *dev;
379 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
380 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
388 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
389 * @p2p: P2P module context from p2p_init()
390 * @addr: P2P Interface Address of the peer
391 * Returns: Pointer to the device entry or %NULL if not found
393 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
396 struct p2p_device *dev;
397 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
398 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
406 * p2p_create_device - Create a peer entry
407 * @p2p: P2P module context from p2p_init()
408 * @addr: P2P Device Address of the peer
409 * Returns: Pointer to the device entry or %NULL on failure
411 * If there is already an entry for the peer, it will be returned instead of
412 * creating a new one.
414 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
417 struct p2p_device *dev, *oldest = NULL;
420 dev = p2p_get_device(p2p, addr);
424 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
426 if (oldest == NULL ||
427 os_reltime_before(&dev->last_seen, &oldest->last_seen))
430 if (count + 1 > p2p->cfg->max_peers && oldest) {
431 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
432 dl_list_del(&oldest->list);
433 p2p_device_free(p2p, oldest);
436 dev = os_zalloc(sizeof(*dev));
439 dl_list_add(&p2p->devices, &dev->list);
440 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
446 static void p2p_copy_client_info(struct p2p_device *dev,
447 struct p2p_client_info *cli)
449 p2p_copy_filter_devname(dev->info.device_name,
450 sizeof(dev->info.device_name),
451 cli->dev_name, cli->dev_name_len);
452 dev->info.dev_capab = cli->dev_capab;
453 dev->info.config_methods = cli->config_methods;
454 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
455 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
456 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
457 dev->info.wps_sec_dev_type_list_len);
461 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
462 const u8 *go_interface_addr, int freq,
463 const u8 *gi, size_t gi_len,
464 struct os_reltime *rx_time)
466 struct p2p_group_info info;
468 struct p2p_device *dev;
473 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
477 * Clear old data for this group; if the devices are still in the
478 * group, the information will be restored in the loop following this.
480 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
481 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
483 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
484 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
488 for (c = 0; c < info.num_clients; c++) {
489 struct p2p_client_info *cli = &info.client[c];
490 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
492 continue; /* ignore our own entry */
493 dev = p2p_get_device(p2p, cli->p2p_device_addr);
495 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
496 P2P_DEV_PROBE_REQ_ONLY)) {
498 * Update information since we have not
499 * received this directly from the client.
501 p2p_copy_client_info(dev, cli);
504 * Need to update P2P Client Discoverability
505 * flag since it is valid only in P2P Group
508 dev->info.dev_capab &=
509 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
510 dev->info.dev_capab |=
512 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
514 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
515 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
518 dev = p2p_create_device(p2p, cli->p2p_device_addr);
521 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
522 p2p_copy_client_info(dev, cli);
523 dev->oper_freq = freq;
524 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
525 dev->info.p2p_device_addr,
527 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
530 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
532 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
533 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
534 os_memcpy(dev->member_in_go_iface, go_interface_addr,
536 dev->flags |= P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT;
543 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
544 int probe_req, const struct p2p_message *msg)
546 os_memcpy(dev->info.device_name, msg->device_name,
547 sizeof(dev->info.device_name));
549 if (msg->manufacturer &&
550 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
551 os_memset(dev->info.manufacturer, 0,
552 sizeof(dev->info.manufacturer));
553 os_memcpy(dev->info.manufacturer, msg->manufacturer,
554 msg->manufacturer_len);
557 if (msg->model_name &&
558 msg->model_name_len < sizeof(dev->info.model_name)) {
559 os_memset(dev->info.model_name, 0,
560 sizeof(dev->info.model_name));
561 os_memcpy(dev->info.model_name, msg->model_name,
562 msg->model_name_len);
565 if (msg->model_number &&
566 msg->model_number_len < sizeof(dev->info.model_number)) {
567 os_memset(dev->info.model_number, 0,
568 sizeof(dev->info.model_number));
569 os_memcpy(dev->info.model_number, msg->model_number,
570 msg->model_number_len);
573 if (msg->serial_number &&
574 msg->serial_number_len < sizeof(dev->info.serial_number)) {
575 os_memset(dev->info.serial_number, 0,
576 sizeof(dev->info.serial_number));
577 os_memcpy(dev->info.serial_number, msg->serial_number,
578 msg->serial_number_len);
581 if (msg->pri_dev_type)
582 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
583 sizeof(dev->info.pri_dev_type));
584 else if (msg->wps_pri_dev_type)
585 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
586 sizeof(dev->info.pri_dev_type));
588 if (msg->wps_sec_dev_type_list) {
589 os_memcpy(dev->info.wps_sec_dev_type_list,
590 msg->wps_sec_dev_type_list,
591 msg->wps_sec_dev_type_list_len);
592 dev->info.wps_sec_dev_type_list_len =
593 msg->wps_sec_dev_type_list_len;
596 if (msg->capability) {
598 * P2P Client Discoverability bit is reserved in all frames
599 * that use this function, so do not change its value here.
601 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
602 dev->info.dev_capab |= msg->capability[0] &
603 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
604 dev->info.group_capab = msg->capability[1];
607 if (msg->ext_listen_timing) {
608 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
609 dev->ext_listen_interval =
610 WPA_GET_LE16(msg->ext_listen_timing + 2);
614 u16 new_config_methods;
615 new_config_methods = msg->config_methods ?
616 msg->config_methods : msg->wps_config_methods;
617 if (new_config_methods &&
618 dev->info.config_methods != new_config_methods) {
619 p2p_dbg(p2p, "Update peer " MACSTR
620 " config_methods 0x%x -> 0x%x",
621 MAC2STR(dev->info.p2p_device_addr),
622 dev->info.config_methods,
624 dev->info.config_methods = new_config_methods;
630 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
636 wpabuf_free(dev->info.vendor_elems);
637 dev->info.vendor_elems = NULL;
641 for (pos = ies; end - pos > 1; pos += len) {
648 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
652 u32 type = WPA_GET_BE32(pos);
654 if (type == WPA_IE_VENDOR_TYPE ||
655 type == WMM_IE_VENDOR_TYPE ||
656 type == WPS_IE_VENDOR_TYPE ||
657 type == P2P_IE_VENDOR_TYPE ||
658 type == WFD_IE_VENDOR_TYPE)
662 /* Unknown vendor element - make raw IE data available */
663 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
665 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
670 static int p2p_compare_wfd_info(struct p2p_device *dev,
671 const struct p2p_message *msg)
673 if (dev->info.wfd_subelems && msg->wfd_subelems) {
674 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
677 return os_memcmp(dev->info.wfd_subelems->buf,
678 msg->wfd_subelems->buf,
679 dev->info.wfd_subelems->used);
681 if (dev->info.wfd_subelems || msg->wfd_subelems)
689 * p2p_add_device - Add peer entries based on scan results or P2P frames
690 * @p2p: P2P module context from p2p_init()
691 * @addr: Source address of Beacon or Probe Response frame (may be either
692 * P2P Device Address or P2P Interface Address)
693 * @level: Signal level (signal strength of the received frame from the peer)
694 * @freq: Frequency on which the Beacon or Probe Response frame was received
695 * @rx_time: Time when the result was received
696 * @ies: IEs from the Beacon or Probe Response frame
697 * @ies_len: Length of ies buffer in octets
698 * @scan_res: Whether this was based on scan results
699 * Returns: 0 on success, -1 on failure
701 * If the scan result is for a GO, the clients in the group will also be added
702 * to the peer table. This function can also be used with some other frames
703 * like Provision Discovery Request that contains P2P Capability and P2P Device
706 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
707 struct os_reltime *rx_time, int level, const u8 *ies,
708 size_t ies_len, int scan_res)
710 struct p2p_device *dev;
711 struct p2p_message msg;
712 const u8 *p2p_dev_addr;
715 struct os_reltime time_now;
717 os_memset(&msg, 0, sizeof(msg));
718 if (p2p_parse_ies(ies, ies_len, &msg)) {
719 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
720 p2p_parse_free(&msg);
724 if (msg.p2p_device_addr)
725 p2p_dev_addr = msg.p2p_device_addr;
726 else if (msg.device_id)
727 p2p_dev_addr = msg.device_id;
729 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
730 p2p_parse_free(&msg);
734 if (!is_zero_ether_addr(p2p->peer_filter) &&
735 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
736 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
737 " due to peer filter", MAC2STR(p2p_dev_addr));
738 p2p_parse_free(&msg);
742 dev = p2p_create_device(p2p, p2p_dev_addr);
744 p2p_parse_free(&msg);
748 if (rx_time == NULL) {
749 os_get_reltime(&time_now);
754 * Update the device entry only if the new peer
755 * entry is newer than the one previously stored, or if
756 * the device was previously seen as a P2P Client in a group
757 * and the new entry isn't older than a threshold.
759 if (dev->last_seen.sec > 0 &&
760 os_reltime_before(rx_time, &dev->last_seen) &&
761 (!(dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT) ||
762 os_reltime_expired(&dev->last_seen, rx_time,
763 P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD))) {
765 "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u flags=0x%x)",
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,
771 p2p_parse_free(&msg);
775 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
777 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY |
778 P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT);
780 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
781 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
783 msg.ssid[1] <= sizeof(dev->oper_ssid) &&
784 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
785 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
787 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
788 dev->oper_ssid_len = msg.ssid[1];
791 if (msg.adv_service_instance && msg.adv_service_instance_len) {
792 wpabuf_free(dev->info.p2ps_instance);
793 dev->info.p2ps_instance = wpabuf_alloc_copy(
794 msg.adv_service_instance, msg.adv_service_instance_len);
797 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
798 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
800 if (*msg.ds_params == 14)
803 ds_freq = 2407 + *msg.ds_params * 5;
804 if (freq != ds_freq) {
805 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
811 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
812 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
813 MACSTR " %d -> %d MHz (DS param %d)",
814 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
815 freq, msg.ds_params ? *msg.ds_params : -1);
818 dev->listen_freq = freq;
820 dev->oper_freq = freq;
822 dev->info.level = level;
824 p2p_copy_wps_info(p2p, dev, 0, &msg);
826 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
827 wpabuf_free(dev->info.wps_vendor_ext[i]);
828 dev->info.wps_vendor_ext[i] = NULL;
831 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
832 if (msg.wps_vendor_ext[i] == NULL)
834 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
835 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
836 if (dev->info.wps_vendor_ext[i] == NULL)
840 wfd_changed = p2p_compare_wfd_info(dev, &msg);
842 if (msg.wfd_subelems) {
843 wpabuf_free(dev->info.wfd_subelems);
844 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
848 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
849 msg.group_info, msg.group_info_len,
853 p2p_parse_free(&msg);
855 p2p_update_peer_vendor_elems(dev, ies, ies_len);
857 if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
858 (!msg.adv_service_instance ||
859 (dev->flags & P2P_DEV_P2PS_REPORTED)))
862 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
863 freq, (unsigned int) rx_time->sec,
864 (unsigned int) rx_time->usec);
865 if (dev->flags & P2P_DEV_USER_REJECTED) {
866 p2p_dbg(p2p, "Do not report rejected device");
870 if (dev->info.config_methods == 0 &&
871 (freq == 2412 || freq == 2437 || freq == 2462)) {
873 * If we have only seen a Beacon frame from a GO, we do not yet
874 * know what WPS config methods it supports. Since some
875 * applications use config_methods value from P2P-DEVICE-FOUND
876 * events, postpone reporting this peer until we've fully
877 * discovered its capabilities.
879 * At least for now, do this only if the peer was detected on
880 * one of the social channels since that peer can be easily be
881 * found again and there are no limitations of having to use
882 * passive scan on this channels, so this can be done through
883 * Probe Response frame that includes the config_methods
886 p2p_dbg(p2p, "Do not report peer " MACSTR
887 " with unknown config methods", MAC2STR(addr));
891 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
892 !(dev->flags & P2P_DEV_REPORTED_ONCE));
893 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
895 if (msg.adv_service_instance)
896 dev->flags |= P2P_DEV_P2PS_REPORTED;
902 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
906 if (p2p->go_neg_peer == dev) {
908 * If GO Negotiation is in progress, report that it has failed.
910 p2p_go_neg_failed(p2p, -1);
912 if (p2p->invite_peer == dev)
913 p2p->invite_peer = NULL;
914 if (p2p->sd_peer == dev)
916 if (p2p->pending_client_disc_go == dev)
917 p2p->pending_client_disc_go = NULL;
919 /* dev_lost() device, but only if it was previously dev_found() */
920 if (dev->flags & P2P_DEV_REPORTED_ONCE)
921 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
922 dev->info.p2p_device_addr);
924 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
925 wpabuf_free(dev->info.wps_vendor_ext[i]);
926 dev->info.wps_vendor_ext[i] = NULL;
929 wpabuf_free(dev->info.wfd_subelems);
930 wpabuf_free(dev->info.vendor_elems);
931 wpabuf_free(dev->go_neg_conf);
932 wpabuf_free(dev->info.p2ps_instance);
938 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
940 struct p2p_channels *c;
941 struct p2p_reg_class *cla;
948 c = &p2p->cfg->channels;
949 for (cl = 0; cl < c->reg_classes; cl++) {
950 cla = &c->reg_class[cl];
951 if (cla->reg_class != p2p->last_prog_scan_class)
953 for (ch = 0; ch < cla->channels; ch++) {
954 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
964 /* Start from beginning */
965 reg_class = c->reg_class[0].reg_class;
966 channel = c->reg_class[0].channel[0];
968 /* Pick the next channel */
970 if (ch == cla->channels) {
972 if (cl == c->reg_classes)
976 reg_class = c->reg_class[cl].reg_class;
977 channel = c->reg_class[cl].channel[ch];
980 freq = p2p_channel_to_freq(reg_class, channel);
981 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
982 reg_class, channel, freq);
983 p2p->last_prog_scan_class = reg_class;
984 p2p->last_prog_scan_chan = channel;
986 if (freq == 2412 || freq == 2437 || freq == 2462)
987 return 0; /* No need to add social channels */
992 static void p2p_search(struct p2p_data *p2p)
995 enum p2p_scan_type type;
996 u16 pw_id = DEV_PW_DEFAULT;
999 if (p2p->drv_in_listen) {
1000 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
1003 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1005 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
1006 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1007 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1008 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1010 type = P2P_SCAN_SOCIAL;
1011 p2p_dbg(p2p, "Starting search");
1014 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1015 p2p->num_req_dev_types, p2p->req_dev_types,
1016 p2p->find_dev_id, pw_id);
1018 p2p_dbg(p2p, "Scan request schedule failed");
1019 p2p_continue_find(p2p);
1024 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1026 struct p2p_data *p2p = eloop_ctx;
1027 p2p_dbg(p2p, "Find timeout -> stop");
1032 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1035 p2p_dbg(p2p, "Scan request failed");
1036 /* Do continue find even for the first p2p_find_scan */
1037 p2p_continue_find(p2p);
1039 p2p_dbg(p2p, "Running p2p_scan");
1040 p2p->p2p_scan_running = 1;
1041 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1042 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1048 static int p2p_run_after_scan(struct p2p_data *p2p)
1050 struct p2p_device *dev;
1051 enum p2p_after_scan op;
1053 if (p2p->after_scan_tx) {
1054 p2p->after_scan_tx_in_progress = 1;
1055 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1056 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1057 p2p->after_scan_tx->freq,
1058 p2p->after_scan_tx->dst,
1059 p2p->after_scan_tx->src,
1060 p2p->after_scan_tx->bssid,
1061 (u8 *) (p2p->after_scan_tx + 1),
1062 p2p->after_scan_tx->len,
1063 p2p->after_scan_tx->wait_time);
1064 os_free(p2p->after_scan_tx);
1065 p2p->after_scan_tx = NULL;
1069 op = p2p->start_after_scan;
1070 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1072 case P2P_AFTER_SCAN_NOTHING:
1074 case P2P_AFTER_SCAN_LISTEN:
1075 p2p_dbg(p2p, "Start previously requested Listen state");
1076 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1077 p2p->pending_listen_usec / 1000);
1079 case P2P_AFTER_SCAN_CONNECT:
1080 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1081 MAC2STR(p2p->after_scan_peer));
1082 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1084 p2p_dbg(p2p, "Peer not known anymore");
1087 p2p_connect_send(p2p, dev);
1095 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1097 struct p2p_data *p2p = eloop_ctx;
1099 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1100 running = p2p->p2p_scan_running;
1101 /* Make sure we recover from missed scan results callback */
1102 p2p->p2p_scan_running = 0;
1105 p2p_run_after_scan(p2p);
1109 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1111 p2p->num_req_dev_types = 0;
1112 os_free(p2p->req_dev_types);
1113 p2p->req_dev_types = NULL;
1117 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1119 u8 buf[SHA256_MAC_LEN];
1121 const u8 *adv_array;
1128 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1132 adv_array = (u8 *) str_buf;
1133 adv_len = os_strlen(str);
1134 if (adv_len >= sizeof(str_buf))
1137 for (i = 0; i < adv_len; i++) {
1138 if (str[i] >= 'A' && str[i] <= 'Z')
1139 str_buf[i] = str[i] - 'A' + 'a';
1141 str_buf[i] = str[i];
1144 if (sha256_vector(1, &adv_array, &adv_len, buf))
1147 os_memcpy(hash, buf, P2PS_HASH_LEN);
1152 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1153 enum p2p_discovery_type type,
1154 unsigned int num_req_dev_types, const u8 *req_dev_types,
1155 const u8 *dev_id, unsigned int search_delay,
1156 u8 seek_count, const char **seek, int freq)
1160 p2p_dbg(p2p, "Starting find (type=%d)", type);
1161 os_get_reltime(&p2p->find_start);
1162 if (p2p->p2p_scan_running) {
1163 p2p_dbg(p2p, "p2p_scan is already running");
1166 p2p_free_req_dev_types(p2p);
1167 if (req_dev_types && num_req_dev_types) {
1168 p2p->req_dev_types = os_malloc(num_req_dev_types *
1170 if (p2p->req_dev_types == NULL)
1172 os_memcpy(p2p->req_dev_types, req_dev_types,
1173 num_req_dev_types * WPS_DEV_TYPE_LEN);
1174 p2p->num_req_dev_types = num_req_dev_types;
1178 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1179 p2p->find_dev_id = p2p->find_dev_id_buf;
1181 p2p->find_dev_id = NULL;
1183 if (seek_count == 0 || !seek) {
1184 /* Not an ASP search */
1186 } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1188 * An empty seek string means no hash values, but still an ASP
1191 p2p_dbg(p2p, "ASP search");
1192 p2p->p2ps_seek_count = 0;
1194 } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1195 u8 buf[P2PS_HASH_LEN];
1198 for (i = 0; i < seek_count; i++) {
1199 if (!p2ps_gen_hash(p2p, seek[i], buf))
1202 p2p_dbg(p2p, "Seek service %s hash " MACSTR,
1203 seek[i], MAC2STR(buf));
1204 os_memcpy(&p2p->p2ps_seek_hash[count * P2PS_HASH_LEN],
1205 buf, P2PS_HASH_LEN);
1209 p2p->p2ps_seek_count = count;
1212 p2p->p2ps_seek_count = 0;
1216 /* Special case to perform wildcard search */
1217 if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1218 p2p->p2ps_seek_count = 1;
1219 os_memcpy(&p2p->p2ps_seek_hash, p2p->wild_card_hash,
1223 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1224 p2p_clear_timeout(p2p);
1225 if (p2p->pending_listen_freq) {
1226 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_find");
1227 p2p->pending_listen_freq = 0;
1229 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1230 p2p->find_type = type;
1231 p2p_device_clear_reported(p2p);
1232 os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
1233 p2p_set_state(p2p, P2P_SEARCH);
1234 p2p->search_delay = search_delay;
1235 p2p->in_search_delay = 0;
1236 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1237 p2p->last_p2p_find_timeout = timeout;
1239 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1242 case P2P_FIND_START_WITH_FULL:
1245 * Start with the specified channel and then move to
1246 * social channels only scans.
1248 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1249 P2P_SCAN_SPECIFIC, freq,
1250 p2p->num_req_dev_types,
1251 p2p->req_dev_types, dev_id,
1256 case P2P_FIND_PROGRESSIVE:
1257 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1258 p2p->num_req_dev_types,
1259 p2p->req_dev_types, dev_id,
1262 case P2P_FIND_ONLY_SOCIAL:
1263 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1264 p2p->num_req_dev_types,
1265 p2p->req_dev_types, dev_id,
1272 if (res != 0 && p2p->p2p_scan_running) {
1273 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1274 /* wait for the previous p2p_scan to complete */
1275 res = 0; /* do not report failure */
1276 } else if (res != 0) {
1277 p2p_dbg(p2p, "Failed to start p2p_scan");
1278 p2p_set_state(p2p, P2P_IDLE);
1279 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1286 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1288 p2p_dbg(p2p, "Stopping find");
1289 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1290 p2p_clear_timeout(p2p);
1291 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1292 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1294 p2p->p2ps_seek_count = 0;
1296 p2p_set_state(p2p, P2P_IDLE);
1297 p2p_free_req_dev_types(p2p);
1298 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1299 if (p2p->go_neg_peer)
1300 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1301 p2p->go_neg_peer = NULL;
1302 p2p->sd_peer = NULL;
1303 p2p->invite_peer = NULL;
1304 p2p_stop_listen_for_freq(p2p, freq);
1305 p2p->send_action_in_progress = 0;
1309 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1311 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1312 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1315 if (p2p->in_listen) {
1317 p2p_clear_timeout(p2p);
1319 if (p2p->drv_in_listen) {
1321 * The driver may not deliver callback to p2p_listen_end()
1322 * when the operation gets canceled, so clear the internal
1323 * variable that is tracking driver state.
1325 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1326 p2p->drv_in_listen = 0;
1328 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1332 void p2p_stop_listen(struct p2p_data *p2p)
1334 if (p2p->state != P2P_LISTEN_ONLY) {
1335 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1339 p2p_stop_listen_for_freq(p2p, 0);
1340 p2p_set_state(p2p, P2P_IDLE);
1344 void p2p_stop_find(struct p2p_data *p2p)
1346 p2p->pending_listen_freq = 0;
1347 p2p_stop_find_for_freq(p2p, 0);
1351 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1352 unsigned int force_freq,
1353 unsigned int pref_freq, int go)
1355 u8 op_class, op_channel;
1356 unsigned int freq = force_freq ? force_freq : pref_freq;
1358 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1359 force_freq, pref_freq, go);
1360 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1361 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1365 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1366 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1368 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1369 freq, op_class, op_channel);
1373 p2p->op_reg_class = op_class;
1374 p2p->op_channel = op_channel;
1377 p2p->channels.reg_classes = 1;
1378 p2p->channels.reg_class[0].channels = 1;
1379 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1380 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1382 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1383 sizeof(struct p2p_channels));
1390 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1392 u8 op_class, op_channel;
1393 const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1394 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1395 const int op_classes_vht[] = { 128, 0 };
1397 p2p_dbg(p2p, "Prepare channel best");
1399 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1400 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1401 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1403 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1404 p2p->op_reg_class = op_class;
1405 p2p->op_channel = op_channel;
1406 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1407 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1408 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1410 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1411 p2p->op_reg_class = op_class;
1412 p2p->op_channel = op_channel;
1413 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1414 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1415 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1416 &op_channel) == 0) {
1417 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1418 p2p->op_reg_class = op_class;
1419 p2p->op_channel = op_channel;
1420 } else if (p2p->cfg->num_pref_chan > 0 &&
1421 p2p_channels_includes(&p2p->cfg->channels,
1422 p2p->cfg->pref_chan[0].op_class,
1423 p2p->cfg->pref_chan[0].chan)) {
1424 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1425 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1426 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1427 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1428 &p2p->op_reg_class, &p2p->op_channel) ==
1430 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1431 p2p->op_reg_class, p2p->op_channel);
1432 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1433 &p2p->op_reg_class, &p2p->op_channel) ==
1435 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1436 p2p->op_reg_class, p2p->op_channel);
1437 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1438 &p2p->op_reg_class, &p2p->op_channel) ==
1440 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1441 p2p->op_reg_class, p2p->op_channel);
1442 } else if (p2p_channels_includes(&p2p->cfg->channels,
1443 p2p->cfg->op_reg_class,
1444 p2p->cfg->op_channel)) {
1445 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1446 p2p->op_reg_class = p2p->cfg->op_reg_class;
1447 p2p->op_channel = p2p->cfg->op_channel;
1448 } else if (p2p_channel_random_social(&p2p->cfg->channels,
1450 &p2p->op_channel) == 0) {
1451 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1452 p2p->op_reg_class, p2p->op_channel);
1454 /* Select any random available channel from the first available
1455 * operating class */
1456 p2p_channel_select(&p2p->cfg->channels, NULL,
1459 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1460 p2p->op_channel, p2p->op_reg_class);
1463 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1464 sizeof(struct p2p_channels));
1469 * p2p_prepare_channel - Select operating channel for GO Negotiation or P2PS PD
1470 * @p2p: P2P module context from p2p_init()
1471 * @dev: Selected peer device
1472 * @force_freq: Forced frequency in MHz or 0 if not forced
1473 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1474 * @go: Whether the local end will be forced to be GO
1475 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1477 * This function is used to do initial operating channel selection for GO
1478 * Negotiation prior to having received peer information or for P2PS PD
1479 * signalling. The selected channel may be further optimized in
1480 * p2p_reselect_channel() once the peer information is available.
1482 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1483 unsigned int force_freq, unsigned int pref_freq, int go)
1485 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1486 force_freq, pref_freq, go);
1487 if (force_freq || pref_freq) {
1488 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1492 p2p_prepare_channel_best(p2p);
1494 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1496 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1497 else if (!force_freq)
1498 p2p_channels_union_inplace(&p2p->channels,
1499 &p2p->cfg->cli_channels);
1500 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1502 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1503 p2p->op_reg_class, p2p->op_channel,
1504 force_freq ? " (forced)" : "");
1507 dev->flags |= P2P_DEV_FORCE_FREQ;
1509 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1515 static void p2p_set_dev_persistent(struct p2p_device *dev,
1516 int persistent_group)
1518 switch (persistent_group) {
1520 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1521 P2P_DEV_PREFER_PERSISTENT_RECONN);
1524 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1525 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1528 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1529 P2P_DEV_PREFER_PERSISTENT_RECONN;
1535 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1536 enum p2p_wps_method wps_method,
1537 int go_intent, const u8 *own_interface_addr,
1538 unsigned int force_freq, int persistent_group,
1539 const u8 *force_ssid, size_t force_ssid_len,
1540 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1542 struct p2p_device *dev;
1544 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1545 " GO Intent=%d Intended Interface Address=" MACSTR
1546 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1548 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1549 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1551 dev = p2p_get_device(p2p, peer_addr);
1552 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1553 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1554 MAC2STR(peer_addr));
1558 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1559 go_intent == 15) < 0)
1562 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1563 if (!(dev->info.dev_capab &
1564 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1565 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1566 " that is in a group and is not discoverable",
1567 MAC2STR(peer_addr));
1570 if (dev->oper_freq <= 0) {
1571 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1572 " with incomplete information",
1573 MAC2STR(peer_addr));
1578 * First, try to connect directly. If the peer does not
1579 * acknowledge frames, assume it is sleeping and use device
1580 * discoverability via the GO at that point.
1586 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1587 force_ssid, force_ssid_len);
1588 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1589 p2p->ssid_len = force_ssid_len;
1593 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1594 dev->flags &= ~P2P_DEV_USER_REJECTED;
1595 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1596 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1597 if (pd_before_go_neg)
1598 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1600 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1602 * Assign dialog token and tie breaker here to use the same
1603 * values in each retry within the same GO Negotiation exchange.
1605 dev->dialog_token++;
1606 if (dev->dialog_token == 0)
1607 dev->dialog_token = 1;
1608 dev->tie_breaker = p2p->next_tie_breaker;
1609 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1611 dev->connect_reqs = 0;
1612 dev->go_neg_req_sent = 0;
1613 dev->go_state = UNKNOWN_GO;
1614 p2p_set_dev_persistent(dev, persistent_group);
1615 p2p->go_intent = go_intent;
1616 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1618 if (p2p->state != P2P_IDLE)
1621 if (p2p->after_scan_tx) {
1623 * We need to drop the pending frame to avoid issues with the
1624 * new GO Negotiation, e.g., when the pending frame was from a
1625 * previous attempt at starting a GO Negotiation.
1627 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1628 os_free(p2p->after_scan_tx);
1629 p2p->after_scan_tx = NULL;
1632 dev->wps_method = wps_method;
1633 dev->oob_pw_id = oob_pw_id;
1634 dev->status = P2P_SC_SUCCESS;
1636 if (p2p->p2p_scan_running) {
1637 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1638 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1639 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1642 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1644 return p2p_connect_send(p2p, dev);
1648 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1649 enum p2p_wps_method wps_method,
1650 int go_intent, const u8 *own_interface_addr,
1651 unsigned int force_freq, int persistent_group,
1652 const u8 *force_ssid, size_t force_ssid_len,
1653 unsigned int pref_freq, u16 oob_pw_id)
1655 struct p2p_device *dev;
1657 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1658 " GO Intent=%d Intended Interface Address=" MACSTR
1659 " wps_method=%d persistent_group=%d oob_pw_id=%u",
1660 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1661 wps_method, persistent_group, oob_pw_id);
1663 dev = p2p_get_device(p2p, peer_addr);
1665 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1666 MAC2STR(peer_addr));
1670 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1676 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1677 force_ssid, force_ssid_len);
1678 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1679 p2p->ssid_len = force_ssid_len;
1683 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1684 dev->flags &= ~P2P_DEV_USER_REJECTED;
1685 dev->go_neg_req_sent = 0;
1686 dev->go_state = UNKNOWN_GO;
1687 p2p_set_dev_persistent(dev, persistent_group);
1688 p2p->go_intent = go_intent;
1689 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1691 dev->wps_method = wps_method;
1692 dev->oob_pw_id = oob_pw_id;
1693 dev->status = P2P_SC_SUCCESS;
1699 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1700 struct p2p_device *dev, struct p2p_message *msg)
1702 os_get_reltime(&dev->last_seen);
1704 p2p_copy_wps_info(p2p, dev, 0, msg);
1706 if (msg->listen_channel) {
1708 freq = p2p_channel_to_freq(msg->listen_channel[3],
1709 msg->listen_channel[4]);
1711 p2p_dbg(p2p, "Unknown peer Listen channel: "
1712 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1713 msg->listen_channel[0],
1714 msg->listen_channel[1],
1715 msg->listen_channel[2],
1716 msg->listen_channel[3],
1717 msg->listen_channel[4]);
1719 p2p_dbg(p2p, "Update peer " MACSTR
1720 " Listen channel: %u -> %u MHz",
1721 MAC2STR(dev->info.p2p_device_addr),
1722 dev->listen_freq, freq);
1723 dev->listen_freq = freq;
1727 if (msg->wfd_subelems) {
1728 wpabuf_free(dev->info.wfd_subelems);
1729 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1732 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1733 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1734 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1736 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1737 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1739 MAC2STR(dev->info.p2p_device_addr),
1740 dev->info.dev_capab, dev->info.group_capab,
1741 dev->info.device_name, dev->listen_freq);
1744 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1746 if (dev->flags & P2P_DEV_USER_REJECTED) {
1747 p2p_dbg(p2p, "Do not report rejected device");
1751 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1752 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1753 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1757 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1759 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1760 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1761 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1762 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1763 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1767 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1769 if (p2p->ssid_set) {
1770 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1771 params->ssid_len = p2p->ssid_len;
1773 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1777 p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1782 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1784 struct p2p_go_neg_results res;
1785 int go = peer->go_state == LOCAL_GO;
1786 struct p2p_channels intersection;
1788 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1789 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1791 os_memset(&res, 0, sizeof(res));
1793 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1794 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1795 res.wps_method = peer->wps_method;
1796 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1797 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1798 res.persistent_group = 2;
1800 res.persistent_group = 1;
1804 /* Setup AP mode for WPS provisioning */
1805 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1807 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1808 res.ssid_len = p2p->ssid_len;
1809 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1811 res.freq = peer->oper_freq;
1812 if (p2p->ssid_len) {
1813 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1814 res.ssid_len = p2p->ssid_len;
1818 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1819 p2p_channels_dump(p2p, "peer channels", &peer->channels);
1820 p2p_channels_intersect(&p2p->channels, &peer->channels,
1823 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1824 p2p_channels_dump(p2p, "intersection after no-GO removal",
1828 p2p_channels_to_freqs(&intersection, res.freq_list,
1831 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1833 p2p_clear_timeout(p2p);
1835 peer->go_neg_req_sent = 0;
1836 peer->wps_method = WPS_NOT_READY;
1837 peer->oob_pw_id = 0;
1838 wpabuf_free(peer->go_neg_conf);
1839 peer->go_neg_conf = NULL;
1841 p2p_set_state(p2p, P2P_PROVISIONING);
1842 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1846 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1847 const u8 *data, size_t len, int rx_freq)
1849 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1850 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1856 case P2P_GO_NEG_REQ:
1857 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1859 case P2P_GO_NEG_RESP:
1860 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1862 case P2P_GO_NEG_CONF:
1863 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1865 case P2P_INVITATION_REQ:
1866 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1869 case P2P_INVITATION_RESP:
1870 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1872 case P2P_PROV_DISC_REQ:
1873 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1875 case P2P_PROV_DISC_RESP:
1876 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1878 case P2P_DEV_DISC_REQ:
1879 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1881 case P2P_DEV_DISC_RESP:
1882 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1885 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1892 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1893 const u8 *sa, const u8 *bssid, const u8 *data,
1894 size_t len, int freq)
1900 case WLAN_PA_VENDOR_SPECIFIC:
1905 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1911 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1913 case WLAN_PA_GAS_INITIAL_REQ:
1914 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1916 case WLAN_PA_GAS_INITIAL_RESP:
1917 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1919 case WLAN_PA_GAS_COMEBACK_REQ:
1920 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1922 case WLAN_PA_GAS_COMEBACK_RESP:
1923 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1929 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1930 const u8 *bssid, u8 category,
1931 const u8 *data, size_t len, int freq)
1933 if (category == WLAN_ACTION_PUBLIC) {
1934 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1938 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1944 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1949 /* P2P action frame */
1950 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1951 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1957 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1960 case P2P_PRESENCE_REQ:
1961 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1963 case P2P_PRESENCE_RESP:
1964 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1966 case P2P_GO_DISC_REQ:
1967 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1970 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1976 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1978 struct p2p_data *p2p = eloop_ctx;
1979 if (p2p->go_neg_peer == NULL)
1981 if (p2p->pending_listen_freq) {
1982 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1983 p2p->pending_listen_freq = 0;
1985 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1986 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1988 * Set new timeout to make sure a previously set one does not expire
1989 * too quickly while waiting for the GO Negotiation to complete.
1991 p2p_set_timeout(p2p, 0, 500000);
1992 p2p_connect_send(p2p, p2p->go_neg_peer);
1996 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1998 struct p2p_data *p2p = eloop_ctx;
1999 if (p2p->invite_peer == NULL)
2001 if (p2p->pending_listen_freq) {
2002 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
2003 p2p->pending_listen_freq = 0;
2005 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
2006 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
2007 p2p->invite_dev_pw_id);
2011 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2012 const u8 *ie, size_t ie_len)
2014 struct p2p_message msg;
2015 struct p2p_device *dev;
2017 os_memset(&msg, 0, sizeof(msg));
2018 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2020 p2p_parse_free(&msg);
2021 return; /* not a P2P probe */
2024 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2025 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2027 /* The Probe Request is not part of P2P Device Discovery. It is
2028 * not known whether the source address of the frame is the P2P
2029 * Device Address or P2P Interface Address. Do not add a new
2030 * peer entry based on this frames.
2032 p2p_parse_free(&msg);
2036 dev = p2p_get_device(p2p, addr);
2038 if (msg.listen_channel) {
2041 if (dev->country[0] == 0)
2042 os_memcpy(dev->country, msg.listen_channel, 3);
2044 freq = p2p_channel_to_freq(msg.listen_channel[3],
2045 msg.listen_channel[4]);
2047 if (freq > 0 && dev->listen_freq != freq) {
2049 "Updated peer " MACSTR " Listen channel (Probe Request): %d -> %d MHz",
2050 MAC2STR(addr), dev->listen_freq, freq);
2051 dev->listen_freq = freq;
2055 os_get_reltime(&dev->last_seen);
2056 p2p_parse_free(&msg);
2057 return; /* already known */
2060 dev = p2p_create_device(p2p, addr);
2062 p2p_parse_free(&msg);
2066 os_get_reltime(&dev->last_seen);
2067 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2069 if (msg.listen_channel) {
2070 os_memcpy(dev->country, msg.listen_channel, 3);
2071 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2072 msg.listen_channel[4]);
2075 p2p_copy_wps_info(p2p, dev, 1, &msg);
2077 if (msg.wfd_subelems) {
2078 wpabuf_free(dev->info.wfd_subelems);
2079 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2082 p2p_parse_free(&msg);
2084 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2085 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2086 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2087 dev->info.group_capab, dev->info.device_name,
2092 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2094 struct p2p_message *msg)
2096 struct p2p_device *dev;
2098 dev = p2p_get_device(p2p, addr);
2100 os_get_reltime(&dev->last_seen);
2101 return dev; /* already known */
2104 dev = p2p_create_device(p2p, addr);
2108 p2p_add_dev_info(p2p, addr, dev, msg);
2114 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2116 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2118 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2119 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2120 WPA_GET_BE16(&req_dev_type[6]) == 0)
2121 return 1; /* Category match with wildcard OUI/sub-category */
2126 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2127 size_t num_req_dev_type)
2130 for (i = 0; i < num_req_dev_type; i++) {
2131 if (dev_type_match(dev_type, req_dev_type[i]))
2139 * p2p_match_dev_type - Match local device type with requested type
2140 * @p2p: P2P module context from p2p_init()
2141 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2142 * Returns: 1 on match, 0 on mismatch
2144 * This function can be used to match the Requested Device Type attribute in
2145 * WPS IE with the local device types for deciding whether to reply to a Probe
2148 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2150 struct wps_parse_attr attr;
2153 if (wps_parse_msg(wps, &attr))
2154 return 1; /* assume no Requested Device Type attributes */
2156 if (attr.num_req_dev_type == 0)
2157 return 1; /* no Requested Device Type attributes -> match */
2159 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2160 attr.num_req_dev_type))
2161 return 1; /* Own Primary Device Type matches */
2163 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2164 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2166 attr.num_req_dev_type))
2167 return 1; /* Own Secondary Device Type matches */
2170 /* No matching device type found */
2175 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p,
2176 const u8 *query_hash,
2184 #ifdef CONFIG_WIFI_DISPLAY
2185 if (p2p->wfd_ie_probe_resp)
2186 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2187 #endif /* CONFIG_WIFI_DISPLAY */
2189 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2190 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2193 extra += MAX_SVC_ADV_IE_LEN;
2195 buf = wpabuf_alloc(1000 + extra);
2199 if (p2p->go_neg_peer) {
2200 /* Advertise immediate availability of WPS credential */
2201 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2204 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2205 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2210 #ifdef CONFIG_WIFI_DISPLAY
2211 if (p2p->wfd_ie_probe_resp)
2212 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2213 #endif /* CONFIG_WIFI_DISPLAY */
2215 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2217 p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2220 len = p2p_buf_add_ie_hdr(buf);
2221 p2p_buf_add_capability(buf, p2p->dev_capab &
2222 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2223 if (p2p->ext_listen_interval)
2224 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2225 p2p->ext_listen_interval);
2226 p2p_buf_add_device_info(buf, p2p, NULL);
2227 p2p_buf_update_ie_hdr(buf, len);
2230 p2p_buf_add_service_instance(buf, p2p, query_count, query_hash,
2231 p2p->p2ps_adv_list);
2237 static int p2p_build_probe_resp_buf(struct p2p_data *p2p, struct wpabuf *buf,
2239 const u8 *addr, int rx_freq)
2241 struct ieee80211_mgmt *resp;
2242 u8 channel, op_class;
2244 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
2245 u.probe_resp.variable));
2247 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2248 (WLAN_FC_STYPE_PROBE_RESP << 4));
2249 os_memcpy(resp->da, addr, ETH_ALEN);
2250 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2251 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2252 resp->u.probe_resp.beacon_int = host_to_le16(100);
2253 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2254 resp->u.probe_resp.capab_info =
2255 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2256 WLAN_CAPABILITY_PRIVACY |
2257 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2259 wpabuf_put_u8(buf, WLAN_EID_SSID);
2260 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2261 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2263 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2264 wpabuf_put_u8(buf, 8);
2265 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2266 wpabuf_put_u8(buf, 90 / 5);
2267 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2268 wpabuf_put_u8(buf, 180 / 5);
2269 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2270 wpabuf_put_u8(buf, 360 / 5);
2271 wpabuf_put_u8(buf, 480 / 5);
2272 wpabuf_put_u8(buf, 540 / 5);
2275 channel = p2p->cfg->channel;
2276 } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2277 p2p_err(p2p, "Failed to convert freq to channel");
2281 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2282 wpabuf_put_u8(buf, 1);
2283 wpabuf_put_u8(buf, channel);
2285 wpabuf_put_buf(buf, ies);
2290 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2292 struct p2ps_advertisement *adv_data;
2295 p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2297 /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */
2298 any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0;
2300 adv_data = p2p->p2ps_adv_list;
2302 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2303 return 1; /* exact hash match */
2305 os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR,
2306 os_strlen(P2PS_WILD_HASH_STR)) == 0)
2307 return 1; /* WFA service match */
2308 adv_data = adv_data->next;
2315 static enum p2p_probe_req_status
2316 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2317 const u8 *bssid, const u8 *ie, size_t ie_len,
2318 unsigned int rx_freq)
2320 struct ieee802_11_elems elems;
2322 struct p2p_message msg;
2325 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2327 /* Ignore invalid Probe Request frames */
2328 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2329 return P2P_PREQ_MALFORMED;
2332 if (elems.p2p == NULL) {
2333 /* not a P2P probe - ignore it */
2334 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2335 return P2P_PREQ_NOT_P2P;
2338 if (dst && !is_broadcast_ether_addr(dst) &&
2339 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2340 /* Not sent to the broadcast address or our P2P Device Address
2342 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2344 return P2P_PREQ_NOT_PROCESSED;
2347 if (bssid && !is_broadcast_ether_addr(bssid)) {
2348 /* Not sent to the Wildcard BSSID */
2349 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2351 return P2P_PREQ_NOT_PROCESSED;
2354 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2355 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2357 /* not using P2P Wildcard SSID - ignore */
2358 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2359 return P2P_PREQ_NOT_PROCESSED;
2362 if (supp_rates_11b_only(&elems)) {
2363 /* Indicates support for 11b rates only */
2364 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2365 return P2P_PREQ_NOT_P2P;
2368 os_memset(&msg, 0, sizeof(msg));
2369 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2370 /* Could not parse P2P attributes */
2371 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2372 return P2P_PREQ_NOT_P2P;
2375 if (msg.service_hash && msg.service_hash_count) {
2376 const u8 *hash = msg.service_hash;
2378 int p2ps_svc_found = 0;
2380 p2p_dbg(p2p, "in_listen=%d drv_in_listen=%d when received P2PS Probe Request at %u MHz; own Listen channel %u, pending listen freq %u MHz",
2381 p2p->in_listen, p2p->drv_in_listen, rx_freq,
2382 p2p->cfg->channel, p2p->pending_listen_freq);
2384 if (!p2p->in_listen && !p2p->drv_in_listen &&
2385 p2p->pending_listen_freq && rx_freq &&
2386 rx_freq != p2p->pending_listen_freq) {
2387 p2p_dbg(p2p, "Do not reply to Probe Request frame that was received on %u MHz while waiting to start Listen state on %u MHz",
2388 rx_freq, p2p->pending_listen_freq);
2389 p2p_parse_free(&msg);
2390 return P2P_PREQ_NOT_LISTEN;
2393 for (i = 0; i < msg.service_hash_count; i++) {
2394 if (p2p_service_find_asp(p2p, hash)) {
2395 p2p_dbg(p2p, "Service Hash match found: "
2396 MACSTR, MAC2STR(hash));
2400 hash += P2PS_HASH_LEN;
2403 /* Probed hash unknown */
2404 if (!p2ps_svc_found) {
2405 p2p_dbg(p2p, "No Service Hash match found");
2406 p2p_parse_free(&msg);
2407 return P2P_PREQ_NOT_PROCESSED;
2410 /* This is not a P2PS Probe Request */
2411 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2413 if (!p2p->in_listen || !p2p->drv_in_listen) {
2414 /* not in Listen state - ignore Probe Request */
2415 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2416 p2p->in_listen, p2p->drv_in_listen);
2417 p2p_parse_free(&msg);
2418 return P2P_PREQ_NOT_LISTEN;
2422 if (msg.device_id &&
2423 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2424 /* Device ID did not match */
2425 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2426 MAC2STR(msg.device_id));
2427 p2p_parse_free(&msg);
2428 return P2P_PREQ_NOT_PROCESSED;
2431 /* Check Requested Device Type match */
2432 if (msg.wps_attributes &&
2433 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2434 /* No match with Requested Device Type */
2435 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2436 p2p_parse_free(&msg);
2437 return P2P_PREQ_NOT_PROCESSED;
2440 if (!p2p->cfg->send_probe_resp) {
2441 /* Response generated elsewhere */
2442 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2443 p2p_parse_free(&msg);
2444 return P2P_PREQ_NOT_PROCESSED;
2447 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2450 * We do not really have a specific BSS that this frame is advertising,
2451 * so build a frame that has some information in valid format. This is
2452 * really only used for discovery purposes, not to learn exact BSS
2455 ies = p2p_build_probe_resp_ies(p2p, msg.service_hash,
2456 msg.service_hash_count);
2457 p2p_parse_free(&msg);
2459 return P2P_PREQ_NOT_PROCESSED;
2461 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2464 return P2P_PREQ_NOT_PROCESSED;
2467 if (p2p_build_probe_resp_buf(p2p, buf, ies, addr, rx_freq)) {
2470 return P2P_PREQ_NOT_PROCESSED;
2475 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2479 return P2P_PREQ_PROCESSED;
2483 enum p2p_probe_req_status
2484 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2485 const u8 *bssid, const u8 *ie, size_t ie_len,
2486 unsigned int rx_freq, int p2p_lo_started)
2488 enum p2p_probe_req_status res;
2490 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2492 if (p2p_lo_started) {
2494 "Probe Response is offloaded, do not reply Probe Request");
2495 return P2P_PREQ_PROCESSED;
2498 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2499 if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2503 * Activate a pending GO Negotiation/Invite flow if a received Probe
2504 * Request frame is from an expected peer. Some devices may share the
2505 * same address for P2P and non-P2P STA running simultaneously. The
2506 * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2507 * return values verified above ensure we are handling a Probe Request
2508 * frame from a P2P peer.
2510 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2512 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2514 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2515 /* Received a Probe Request from GO Negotiation peer */
2516 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2517 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2518 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2522 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2524 (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2525 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2527 /* Received a Probe Request from Invite peer */
2528 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2529 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2530 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2538 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2539 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2546 struct p2p_message msg;
2549 return 0; /* WLAN AP is not a P2P manager */
2551 os_memset(&msg, 0, sizeof(msg));
2552 if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2555 p2p_dbg(p2p, "BSS P2P manageability %s",
2556 msg.manageability ? "enabled" : "disabled");
2558 if (!msg.manageability)
2562 * (Re)Association Request - P2P IE
2563 * P2P Capability attribute (shall be present)
2564 * P2P Interface attribute (present if concurrent device and
2565 * P2P Management is enabled)
2567 tmp = wpabuf_alloc(200);
2571 lpos = p2p_buf_add_ie_hdr(tmp);
2573 if (p2p->num_groups > 0) {
2574 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2575 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2576 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2578 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2580 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2581 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2582 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2583 p2p_buf_add_p2p_interface(tmp, p2p);
2584 p2p_buf_update_ie_hdr(tmp, lpos);
2586 tmplen = wpabuf_len(tmp);
2590 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2599 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2600 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2604 struct p2p_device *peer;
2610 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2612 #ifdef CONFIG_WIFI_DISPLAY
2613 if (p2p->wfd_ie_assoc_req)
2614 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2615 #endif /* CONFIG_WIFI_DISPLAY */
2617 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2618 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2621 * (Re)Association Request - P2P IE
2622 * P2P Capability attribute (shall be present)
2623 * Extended Listen Timing (may be present)
2624 * P2P Device Info attribute (shall be present)
2626 tmp = wpabuf_alloc(200 + extra);
2630 #ifdef CONFIG_WIFI_DISPLAY
2631 if (p2p->wfd_ie_assoc_req)
2632 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2633 #endif /* CONFIG_WIFI_DISPLAY */
2635 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2637 p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2639 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2641 lpos = p2p_buf_add_ie_hdr(tmp);
2642 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2643 if (p2p->ext_listen_interval)
2644 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2645 p2p->ext_listen_interval);
2646 p2p_buf_add_device_info(tmp, p2p, peer);
2647 p2p_buf_update_ie_hdr(tmp, lpos);
2649 tmplen = wpabuf_len(tmp);
2653 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2662 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2664 struct wpabuf *p2p_ie;
2667 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2671 ret = p2p_attr_text(p2p_ie, buf, end);
2672 wpabuf_free(p2p_ie);
2677 struct p2ps_advertisement *
2678 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2680 struct p2ps_advertisement *adv_data;
2685 adv_data = p2p->p2ps_adv_list;
2687 if (adv_data->id == adv_id)
2689 adv_data = adv_data->next;
2696 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2698 struct p2ps_advertisement *adv_data;
2699 struct p2ps_advertisement **prior;
2704 adv_data = p2p->p2ps_adv_list;
2705 prior = &p2p->p2ps_adv_list;
2707 if (adv_data->id == adv_id) {
2708 p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2709 *prior = adv_data->next;
2713 prior = &adv_data->next;
2714 adv_data = adv_data->next;
2721 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2722 const char *adv_str, u8 svc_state, u16 config_methods,
2723 const char *svc_info, const u8 *cpt_priority)
2725 struct p2ps_advertisement *adv_data, *tmp, **prev;
2726 u8 buf[P2PS_HASH_LEN];
2727 size_t adv_data_len, adv_len, info_len = 0;
2730 if (!p2p || !adv_str || !adv_str[0] || !cpt_priority)
2733 if (!(config_methods & p2p->cfg->config_methods)) {
2734 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2735 config_methods, p2p->cfg->config_methods);
2739 if (!p2ps_gen_hash(p2p, adv_str, buf))
2743 info_len = os_strlen(svc_info);
2744 adv_len = os_strlen(adv_str);
2745 adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2748 adv_data = os_zalloc(adv_data_len);
2752 os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2753 adv_data->id = adv_id;
2754 adv_data->state = svc_state;
2755 adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2756 adv_data->auto_accept = (u8) auto_accept;
2757 os_memcpy(adv_data->svc_name, adv_str, adv_len);
2759 for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) {
2760 adv_data->cpt_priority[i] = cpt_priority[i];
2761 adv_data->cpt_mask |= cpt_priority[i];
2764 if (svc_info && info_len) {
2765 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2766 os_memcpy(adv_data->svc_info, svc_info, info_len);
2770 * Group Advertisements by service string. They do not need to be
2771 * sorted, but groups allow easier Probe Response instance grouping
2773 tmp = p2p->p2ps_adv_list;
2774 prev = &p2p->p2ps_adv_list;
2776 if (tmp->id == adv_data->id) {
2777 if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2781 adv_data->next = tmp->next;
2786 if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2787 adv_data->next = tmp->next;
2788 tmp->next = adv_data;
2796 /* No svc_name match found */
2797 adv_data->next = p2p->p2ps_adv_list;
2798 p2p->p2ps_adv_list = adv_data;
2802 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x",
2803 adv_id, adv_data->config_methods, svc_state, adv_str,
2804 adv_data->cpt_mask);
2810 void p2p_service_flush_asp(struct p2p_data *p2p)
2812 struct p2ps_advertisement *adv, *prev;
2817 adv = p2p->p2ps_adv_list;
2824 p2p->p2ps_adv_list = NULL;
2825 p2p_dbg(p2p, "All ASP advertisements flushed");
2829 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2831 struct p2p_message msg;
2833 os_memset(&msg, 0, sizeof(msg));
2834 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2837 if (msg.p2p_device_addr) {
2838 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2840 } else if (msg.device_id) {
2841 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2848 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2850 struct wpabuf *p2p_ie;
2853 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2854 P2P_IE_VENDOR_TYPE);
2857 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2858 wpabuf_free(p2p_ie);
2863 static void p2p_clear_go_neg(struct p2p_data *p2p)
2865 p2p->go_neg_peer = NULL;
2866 p2p_clear_timeout(p2p);
2867 p2p_set_state(p2p, P2P_IDLE);
2871 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2873 if (p2p->go_neg_peer == NULL) {
2874 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2875 return; /* No pending Group Formation */
2878 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2880 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2881 MACSTR " (GO Negotiation peer " MACSTR ")",
2883 MAC2STR(p2p->go_neg_peer->intended_addr));
2884 return; /* Ignore unexpected peer address */
2887 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2890 p2p_clear_go_neg(p2p);
2894 void p2p_group_formation_failed(struct p2p_data *p2p)
2896 if (p2p->go_neg_peer == NULL) {
2897 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2898 return; /* No pending Group Formation */
2901 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2902 MAC2STR(p2p->go_neg_peer->intended_addr));
2904 p2p_clear_go_neg(p2p);
2908 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2910 struct p2p_data *p2p;
2912 if (cfg->max_peers < 1 ||
2913 cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2916 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2919 p2p->cfg = (struct p2p_config *) (p2p + 1);
2920 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2922 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2923 if (cfg->manufacturer)
2924 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2925 if (cfg->model_name)
2926 p2p->cfg->model_name = os_strdup(cfg->model_name);
2927 if (cfg->model_number)
2928 p2p->cfg->model_number = os_strdup(cfg->model_number);
2929 if (cfg->serial_number)
2930 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2931 if (cfg->pref_chan) {
2932 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2933 sizeof(struct p2p_channel));
2934 if (p2p->cfg->pref_chan) {
2935 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2936 cfg->num_pref_chan *
2937 sizeof(struct p2p_channel));
2939 p2p->cfg->num_pref_chan = 0;
2942 p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2944 p2p->min_disc_int = 1;
2945 p2p->max_disc_int = 3;
2946 p2p->max_disc_tu = -1;
2948 if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2949 p2p->next_tie_breaker = 0;
2950 p2p->next_tie_breaker &= 0x01;
2951 if (cfg->sd_request)
2952 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2953 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2954 if (cfg->concurrent_operations)
2955 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2956 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2958 dl_list_init(&p2p->devices);
2960 p2p->go_timeout = 100;
2961 p2p->client_timeout = 20;
2962 p2p->num_p2p_sd_queries = 0;
2964 p2p_dbg(p2p, "initialized");
2965 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2966 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2972 void p2p_deinit(struct p2p_data *p2p)
2974 #ifdef CONFIG_WIFI_DISPLAY
2975 wpabuf_free(p2p->wfd_ie_beacon);
2976 wpabuf_free(p2p->wfd_ie_probe_req);
2977 wpabuf_free(p2p->wfd_ie_probe_resp);
2978 wpabuf_free(p2p->wfd_ie_assoc_req);
2979 wpabuf_free(p2p->wfd_ie_invitation);
2980 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2981 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2982 wpabuf_free(p2p->wfd_ie_go_neg);
2983 wpabuf_free(p2p->wfd_dev_info);
2984 wpabuf_free(p2p->wfd_assoc_bssid);
2985 wpabuf_free(p2p->wfd_coupled_sink_info);
2986 #endif /* CONFIG_WIFI_DISPLAY */
2988 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2989 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2990 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2992 p2p_free_req_dev_types(p2p);
2993 os_free(p2p->cfg->dev_name);
2994 os_free(p2p->cfg->manufacturer);
2995 os_free(p2p->cfg->model_name);
2996 os_free(p2p->cfg->model_number);
2997 os_free(p2p->cfg->serial_number);
2998 os_free(p2p->cfg->pref_chan);
2999 os_free(p2p->groups);
3000 p2ps_prov_free(p2p);
3001 wpabuf_free(p2p->sd_resp);
3002 os_free(p2p->after_scan_tx);
3003 p2p_remove_wps_vendor_extensions(p2p);
3004 os_free(p2p->no_go_freq.range);
3005 p2p_service_flush_asp(p2p);
3011 void p2p_flush(struct p2p_data *p2p)
3013 struct p2p_device *dev, *prev;
3015 p2p_ext_listen(p2p, 0, 0);
3017 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
3019 dl_list_del(&dev->list);
3020 p2p_device_free(p2p, dev);
3022 p2p_free_sd_queries(p2p);
3023 os_free(p2p->after_scan_tx);
3024 p2p->after_scan_tx = NULL;
3029 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
3031 struct p2p_device *dev;
3033 dev = p2p_get_device(p2p, addr);
3037 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
3039 if (p2p->go_neg_peer == dev) {
3040 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3041 p2p->go_neg_peer = NULL;
3044 dev->wps_method = WPS_NOT_READY;
3046 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3047 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3049 /* Check if after_scan_tx is for this peer. If so free it */
3050 if (p2p->after_scan_tx &&
3051 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3052 os_free(p2p->after_scan_tx);
3053 p2p->after_scan_tx = NULL;
3060 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3062 os_free(p2p->cfg->dev_name);
3064 p2p->cfg->dev_name = os_strdup(dev_name);
3065 if (p2p->cfg->dev_name == NULL)
3068 p2p->cfg->dev_name = NULL;
3073 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3075 os_free(p2p->cfg->manufacturer);
3076 p2p->cfg->manufacturer = NULL;
3078 p2p->cfg->manufacturer = os_strdup(manufacturer);
3079 if (p2p->cfg->manufacturer == NULL)
3087 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3089 os_free(p2p->cfg->model_name);
3090 p2p->cfg->model_name = NULL;
3092 p2p->cfg->model_name = os_strdup(model_name);
3093 if (p2p->cfg->model_name == NULL)
3101 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3103 os_free(p2p->cfg->model_number);
3104 p2p->cfg->model_number = NULL;
3106 p2p->cfg->model_number = os_strdup(model_number);
3107 if (p2p->cfg->model_number == NULL)
3115 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3117 os_free(p2p->cfg->serial_number);
3118 p2p->cfg->serial_number = NULL;
3119 if (serial_number) {
3120 p2p->cfg->serial_number = os_strdup(serial_number);
3121 if (p2p->cfg->serial_number == NULL)
3129 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3131 p2p->cfg->config_methods = config_methods;
3135 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3137 os_memcpy(p2p->cfg->uuid, uuid, 16);
3141 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3143 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3148 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3149 size_t num_dev_types)
3151 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3152 num_dev_types = P2P_SEC_DEVICE_TYPES;
3153 p2p->cfg->num_sec_dev_types = num_dev_types;
3154 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3159 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3163 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3164 wpabuf_free(p2p->wps_vendor_ext[i]);
3165 p2p->wps_vendor_ext[i] = NULL;
3170 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3171 const struct wpabuf *vendor_ext)
3175 if (vendor_ext == NULL)
3178 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3179 if (p2p->wps_vendor_ext[i] == NULL)
3182 if (i >= P2P_MAX_WPS_VENDOR_EXT)
3185 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3186 if (p2p->wps_vendor_ext[i] == NULL)
3193 int p2p_set_country(struct p2p_data *p2p, const char *country)
3195 os_memcpy(p2p->cfg->country, country, 3);
3200 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3204 if (dev->sd_pending_bcast_queries == 0) {
3205 /* Initialize with total number of registered broadcast
3207 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3210 res = p2p_start_sd(p2p, dev);
3216 if (dev->req_config_methods &&
3217 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3218 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3219 MACSTR " (config methods 0x%x)",
3220 MAC2STR(dev->info.p2p_device_addr),
3221 dev->req_config_methods);
3222 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3230 void p2p_continue_find(struct p2p_data *p2p)
3232 struct p2p_device *dev;
3235 p2p_set_state(p2p, P2P_SEARCH);
3237 /* Continue from the device following the last iteration */
3239 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3240 if (dev == p2p->last_p2p_find_oper) {
3246 res = p2p_pre_find_operation(p2p, dev);
3248 p2p->last_p2p_find_oper = dev;
3256 * Wrap around to the beginning of the list and continue until the last
3259 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3260 res = p2p_pre_find_operation(p2p, dev);
3262 p2p->last_p2p_find_oper = dev;
3267 if (dev == p2p->last_p2p_find_oper)
3272 os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
3273 p2p_listen_in_find(p2p, 1);
3277 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3279 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3281 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3285 if (is_zero_ether_addr(p2p->sd_query_no_ack)) {
3286 os_memcpy(p2p->sd_query_no_ack,
3287 p2p->sd_peer->info.p2p_device_addr,
3290 "First SD Query no-ACK in this search iteration: "
3291 MACSTR, MAC2STR(p2p->sd_query_no_ack));
3293 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3295 p2p->sd_peer = NULL;
3296 if (p2p->state != P2P_IDLE)
3297 p2p_continue_find(p2p);
3301 if (p2p->sd_peer == NULL) {
3302 p2p_dbg(p2p, "No SD peer entry known");
3303 if (p2p->state != P2P_IDLE)
3304 p2p_continue_find(p2p);
3308 if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3309 /* Update the pending broadcast SD query count for this device
3311 p2p->sd_peer->sd_pending_bcast_queries--;
3314 * If there are no pending broadcast queries for this device,
3315 * mark it as done (-1).
3317 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3318 p2p->sd_peer->sd_pending_bcast_queries = -1;
3321 /* Wait for response from the peer */
3322 p2p_set_state(p2p, P2P_SD_DURING_FIND);
3323 p2p_set_timeout(p2p, 0, 200000);
3328 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3329 * @p2p: P2P module context from p2p_init()
3331 static void p2p_retry_pd(struct p2p_data *p2p)
3333 struct p2p_device *dev;
3336 * Retry the prov disc req attempt only for the peer that the user had
3340 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3341 if (os_memcmp(p2p->pending_pd_devaddr,
3342 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3344 if (!dev->req_config_methods)
3347 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3348 MACSTR " (config methods 0x%x)",
3349 MAC2STR(dev->info.p2p_device_addr),
3350 dev->req_config_methods);
3351 p2p_send_prov_disc_req(p2p, dev,
3352 dev->flags & P2P_DEV_PD_FOR_JOIN,
3353 p2p->pd_force_freq);
3359 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3361 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3365 * Postpone resetting the pending action state till after we actually
3366 * time out. This allows us to take some action like notifying any
3367 * interested parties about no response to the request.
3369 * When the timer (below) goes off we check in IDLE, SEARCH, or
3370 * LISTEN_ONLY state, which are the only allowed states to issue a PD
3371 * requests in, if this was still pending and then raise notification.
3375 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3377 if (p2p->user_initiated_pd &&
3378 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3380 /* Retry request from timeout to avoid busy loops */
3381 p2p->pending_action_state = P2P_PENDING_PD;
3382 p2p_set_timeout(p2p, 0, 50000);
3383 } else if (p2p->state != P2P_IDLE)
3384 p2p_continue_find(p2p);
3385 else if (p2p->user_initiated_pd) {
3386 p2p->pending_action_state = P2P_PENDING_PD;
3387 p2p_set_timeout(p2p, 0, 300000);
3393 * If after PD Request the peer doesn't expect to receive PD Response
3394 * the PD Request ACK indicates a completion of the current PD. This
3395 * happens only on the advertiser side sending the follow-on PD Request
3396 * with the status different than 12 (Success: accepted by user).
3398 if (p2p->p2ps_prov && !p2p->p2ps_prov->pd_seeker &&
3399 p2p->p2ps_prov->status != P2P_SC_SUCCESS_DEFERRED) {
3400 p2p_dbg(p2p, "P2PS PD completion on Follow-on PD Request ACK");
3402 if (p2p->send_action_in_progress) {
3403 p2p->send_action_in_progress = 0;
3404 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3407 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3409 if (p2p->cfg->p2ps_prov_complete) {
3410 p2p->cfg->p2ps_prov_complete(
3412 p2p->p2ps_prov->status,
3413 p2p->p2ps_prov->adv_mac,
3414 p2p->p2ps_prov->adv_mac,
3415 p2p->p2ps_prov->session_mac,
3416 NULL, p2p->p2ps_prov->adv_id,
3417 p2p->p2ps_prov->session_id,
3418 0, 0, NULL, 0, 0, 0,
3419 NULL, NULL, 0, 0, NULL, 0);
3422 if (p2p->user_initiated_pd)
3423 p2p_reset_pending_pd(p2p);
3425 p2ps_prov_free(p2p);
3430 * This postponing, of resetting pending_action_state, needs to be
3431 * done only for user initiated PD requests and not internal ones.
3433 if (p2p->user_initiated_pd)
3434 p2p->pending_action_state = P2P_PENDING_PD;
3436 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3438 /* Wait for response from the peer */
3439 if (p2p->state == P2P_SEARCH)
3440 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3441 p2p_set_timeout(p2p, 0, 200000);
3445 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3447 if (p2p->after_scan_tx_in_progress) {
3448 p2p->after_scan_tx_in_progress = 0;
3449 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3450 p2p_run_after_scan(p2p))
3452 if (p2p->state == P2P_SEARCH) {
3453 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3454 p2p_continue_find(p2p);
3462 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3464 p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3467 if (p2p->send_action_in_progress) {
3468 p2p->send_action_in_progress = 0;
3469 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3472 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3475 goto continue_search;
3477 if (!p2p->cfg->prov_disc_resp_cb ||
3478 p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3479 goto continue_search;
3482 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3486 p2p_check_after_scan_tx_continuation(p2p);
3490 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3491 struct os_reltime *rx_time, int level, const u8 *ies,
3494 if (os_reltime_before(rx_time, &p2p->find_start)) {
3496 * The driver may have cached (e.g., in cfg80211 BSS table) the
3497 * scan results for relatively long time. To avoid reporting
3498 * stale information, update P2P peers only based on results
3499 * that have based on frames received after the last p2p_find
3500 * operation was started.
3502 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3503 " (rx_time=%u.%06u find_start=%u.%06u)",
3504 MAC2STR(bssid), (unsigned int) rx_time->sec,
3505 (unsigned int) rx_time->usec,
3506 (unsigned int) p2p->find_start.sec,
3507 (unsigned int) p2p->find_start.usec);
3511 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3517 void p2p_scan_res_handled(struct p2p_data *p2p)
3519 if (!p2p->p2p_scan_running) {
3520 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3522 p2p->p2p_scan_running = 0;
3523 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3525 if (p2p_run_after_scan(p2p))
3527 if (p2p->state == P2P_SEARCH)
3528 p2p_continue_find(p2p);
3532 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
3538 #ifdef CONFIG_WIFI_DISPLAY
3539 if (p2p->wfd_ie_probe_req)
3540 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3541 #endif /* CONFIG_WIFI_DISPLAY */
3543 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3545 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3547 len = p2p_buf_add_ie_hdr(ies);
3549 dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3551 /* P2PS requires Probe Request frames to include SD bit */
3552 if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3553 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3555 p2p_buf_add_capability(ies, dev_capab, 0);
3558 p2p_buf_add_device_id(ies, dev_id);
3559 if (p2p->cfg->reg_class && p2p->cfg->channel)
3560 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3561 p2p->cfg->reg_class,
3563 if (p2p->ext_listen_interval)
3564 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3565 p2p->ext_listen_interval);
3567 if (bands & BAND_60_GHZ)
3568 p2p_buf_add_device_info(ies, p2p, NULL);
3570 if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3571 p2p_buf_add_service_hash(ies, p2p);
3573 /* TODO: p2p_buf_add_operating_channel() if GO */
3574 p2p_buf_update_ie_hdr(ies, len);
3578 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3582 #ifdef CONFIG_WIFI_DISPLAY
3583 if (p2p && p2p->wfd_ie_probe_req)
3584 len += wpabuf_len(p2p->wfd_ie_probe_req);
3585 #endif /* CONFIG_WIFI_DISPLAY */
3587 if (p2p && p2p->vendor_elem &&
3588 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3589 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3595 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3597 return p2p_attr_text(p2p_ie, buf, end);
3601 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3603 struct p2p_device *dev = p2p->go_neg_peer;
3606 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3609 p2p_dbg(p2p, "No pending GO Negotiation");
3614 if (dev->flags & P2P_DEV_USER_REJECTED) {
3615 p2p_set_state(p2p, P2P_IDLE);
3618 } else if (dev->go_neg_req_sent) {
3619 /* Cancel the increment from p2p_connect_send() on failure */
3620 dev->go_neg_req_sent--;
3624 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3625 !is_zero_ether_addr(dev->member_in_go_dev)) {
3626 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3627 MAC2STR(dev->info.p2p_device_addr));
3628 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3629 p2p_send_dev_disc_req(p2p, dev);
3634 * Use P2P find, if needed, to find the other device from its listen
3637 p2p_set_state(p2p, P2P_CONNECT);
3638 timeout = success ? 500000 : 100000;
3639 if (!success && p2p->go_neg_peer &&
3640 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3643 * Peer is expected to wait our response and we will skip the
3644 * listen phase. Add some randomness to the wait time here to
3645 * make it less likely to hit cases where we could end up in
3646 * sync with peer not listening.
3648 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3650 timeout += r % 100000;
3652 p2p_set_timeout(p2p, 0, timeout);
3656 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3658 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3660 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3661 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3664 p2p_set_state(p2p, P2P_CONNECT);
3665 p2p_set_timeout(p2p, 0, 500000);
3669 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3672 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3673 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3674 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3679 struct p2p_device *dev;
3680 dev = p2p_get_device(p2p, addr);
3682 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3683 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3686 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3687 p2p_continue_find(p2p);
3691 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3692 enum p2p_send_action_result result)
3694 struct p2p_device *dev;
3696 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3697 if (result == P2P_SEND_ACTION_FAILED) {
3698 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3699 p2p_go_neg_failed(p2p, -1);
3703 dev = p2p->go_neg_peer;
3705 if (result == P2P_SEND_ACTION_NO_ACK) {
3707 * Retry GO Negotiation Confirmation
3708 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3709 * ACK for confirmation.
3711 if (dev && dev->go_neg_conf &&
3712 dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3713 p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3714 dev->go_neg_conf_sent);
3715 p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3716 if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3717 dev->info.p2p_device_addr,
3719 dev->info.p2p_device_addr,
3720 wpabuf_head(dev->go_neg_conf),
3721 wpabuf_len(dev->go_neg_conf), 0) >=
3723 dev->go_neg_conf_sent++;
3726 p2p_dbg(p2p, "Failed to re-send Action frame");
3729 * Continue with the assumption that the first attempt
3730 * went through and just the ACK frame was lost.
3735 * It looks like the TX status for GO Negotiation Confirm is
3736 * often showing failure even when the peer has actually
3737 * received the frame. Since the peer may change channels
3738 * immediately after having received the frame, we may not see
3739 * an Ack for retries, so just dropping a single frame may
3740 * trigger this. To allow the group formation to succeed if the
3741 * peer did indeed receive the frame, continue regardless of
3744 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3747 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3752 p2p_go_complete(p2p, dev);
3756 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3757 const u8 *src, const u8 *bssid,
3758 enum p2p_send_action_result result)
3760 enum p2p_pending_action_state state;
3763 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3764 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3765 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3766 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3767 success = result == P2P_SEND_ACTION_SUCCESS;
3768 state = p2p->pending_action_state;
3769 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3771 case P2P_NO_PENDING_ACTION:
3772 if (p2p->send_action_in_progress) {
3773 p2p->send_action_in_progress = 0;
3774 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3776 p2p_check_after_scan_tx_continuation(p2p);
3778 case P2P_PENDING_GO_NEG_REQUEST:
3779 p2p_go_neg_req_cb(p2p, success);
3781 case P2P_PENDING_GO_NEG_RESPONSE:
3782 p2p_go_neg_resp_cb(p2p, success);
3784 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3785 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3787 case P2P_PENDING_GO_NEG_CONFIRM:
3788 p2p_go_neg_conf_cb(p2p, result);
3790 case P2P_PENDING_SD:
3791 p2p_sd_cb(p2p, success);
3793 case P2P_PENDING_PD:
3794 p2p_prov_disc_cb(p2p, success);
3796 case P2P_PENDING_PD_RESPONSE:
3797 p2p_prov_disc_resp_cb(p2p, success);
3799 case P2P_PENDING_INVITATION_REQUEST:
3800 p2p_invitation_req_cb(p2p, success);
3802 case P2P_PENDING_INVITATION_RESPONSE:
3803 p2p_invitation_resp_cb(p2p, success);
3804 if (p2p->inv_status != P2P_SC_SUCCESS)
3805 p2p_check_after_scan_tx_continuation(p2p);
3807 case P2P_PENDING_DEV_DISC_REQUEST:
3808 p2p_dev_disc_req_cb(p2p, success);
3810 case P2P_PENDING_DEV_DISC_RESPONSE:
3811 p2p_dev_disc_resp_cb(p2p, success);
3813 case P2P_PENDING_GO_DISC_REQ:
3814 p2p_go_disc_req_cb(p2p, success);
3818 p2p->after_scan_tx_in_progress = 0;
3822 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3823 unsigned int duration)
3825 if (freq == p2p->pending_client_disc_freq) {
3826 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3827 p2p->pending_client_disc_freq = 0;
3831 if (freq != p2p->pending_listen_freq) {
3832 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3833 freq, duration, p2p->pending_listen_freq);
3837 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3838 p2p->pending_listen_sec, p2p->pending_listen_usec,
3839 p2p->pending_listen_freq);
3841 p2p->drv_in_listen = freq;
3842 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3844 * Add 20 msec extra wait to avoid race condition with driver
3845 * remain-on-channel end event, i.e., give driver more time to
3846 * complete the operation before our timeout expires.
3848 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3849 p2p->pending_listen_usec + 20000);
3852 p2p->pending_listen_freq = 0;
3856 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3858 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3859 p2p->drv_in_listen = 0;
3861 return 0; /* Internal timeout will trigger the next step */
3863 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3864 if (p2p->go_neg_peer->connect_reqs >= 120) {
3865 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3866 p2p_go_neg_failed(p2p, -1);
3870 p2p_set_state(p2p, P2P_CONNECT);
3871 p2p_connect_send(p2p, p2p->go_neg_peer);
3873 } else if (p2p->state == P2P_SEARCH) {
3874 if (p2p->p2p_scan_running) {
3876 * Search is already in progress. This can happen if
3877 * an Action frame RX is reported immediately after
3878 * the end of a remain-on-channel operation and the
3879 * response frame to that is sent using an offchannel
3880 * operation while in p2p_find. Avoid an attempt to
3881 * restart a scan here.
3883 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3886 if (p2p->pending_listen_freq) {
3888 * Better wait a bit if the driver is unable to start
3889 * offchannel operation for some reason. p2p_search()
3890 * will be started from internal timeout.
3892 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3893 p2p_set_timeout(p2p, 0, 100000);
3896 if (p2p->search_delay) {
3897 p2p_dbg(p2p, "Delay search operation by %u ms",
3899 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3900 (p2p->search_delay % 1000) * 1000);
3911 static void p2p_timeout_connect(struct p2p_data *p2p)
3913 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3914 if (p2p->go_neg_peer &&
3915 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3916 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3917 p2p_go_neg_failed(p2p, -1);
3920 if (p2p->go_neg_peer &&
3921 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3922 p2p->go_neg_peer->connect_reqs < 120) {
3923 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3924 p2p_connect_send(p2p, p2p->go_neg_peer);
3927 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3928 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3929 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3930 p2p_set_timeout(p2p, 0, 30000);
3933 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3934 p2p_listen_in_find(p2p, 0);
3938 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3940 if (p2p->go_neg_peer) {
3941 if (p2p->drv_in_listen) {
3942 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3946 if (p2p->go_neg_peer->connect_reqs >= 120) {
3947 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3948 p2p_go_neg_failed(p2p, -1);
3952 p2p_set_state(p2p, P2P_CONNECT);
3953 p2p_connect_send(p2p, p2p->go_neg_peer);
3955 p2p_set_state(p2p, P2P_IDLE);
3959 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3961 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3963 if (p2p->cfg->is_concurrent_session_active &&
3964 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3965 p2p_set_timeout(p2p, 0, 500000);
3967 p2p_set_timeout(p2p, 0, 200000);
3971 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3973 struct p2p_device *dev = p2p->go_neg_peer;
3976 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3980 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3981 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3982 p2p_listen_in_find(p2p, 0);
3986 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3988 p2p_dbg(p2p, "Service Discovery Query timeout");
3990 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3991 p2p->sd_peer = NULL;
3993 p2p_continue_find(p2p);
3997 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3999 p2p_dbg(p2p, "Provision Discovery Request timeout");
4000 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4001 p2p_continue_find(p2p);
4005 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
4010 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4013 * For user initiated PD requests that we have not gotten any responses
4014 * for while in IDLE state, we retry them a couple of times before
4017 if (!p2p->user_initiated_pd)
4020 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
4022 if (p2p->pd_retries) {
4026 struct p2p_device *dev;
4029 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
4030 if (os_memcmp(p2p->pending_pd_devaddr,
4031 dev->info.p2p_device_addr, ETH_ALEN) != 0)
4033 if (dev->req_config_methods &&
4034 (dev->flags & P2P_DEV_PD_FOR_JOIN))
4038 if (p2p->p2ps_prov) {
4039 adv_id = p2p->p2ps_prov->adv_id;
4040 adv_mac = p2p->p2ps_prov->adv_mac;
4043 if (p2p->cfg->prov_disc_fail)
4044 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
4045 p2p->pending_pd_devaddr,
4047 P2P_PROV_DISC_TIMEOUT_JOIN :
4048 P2P_PROV_DISC_TIMEOUT,
4049 adv_id, adv_mac, NULL);
4050 p2p_reset_pending_pd(p2p);
4055 static void p2p_timeout_invite(struct p2p_data *p2p)
4057 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4058 p2p_set_state(p2p, P2P_INVITE_LISTEN);
4059 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
4061 * Better remain on operating channel instead of listen channel
4062 * when running a group.
4064 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
4065 p2p_set_timeout(p2p, 0, 100000);
4068 p2p_listen_in_find(p2p, 0);
4072 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
4074 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
4075 p2p_set_state(p2p, P2P_INVITE);
4076 p2p_invite_send(p2p, p2p->invite_peer,
4077 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
4079 if (p2p->invite_peer) {
4080 p2p_dbg(p2p, "Invitation Request retry limit reached");
4081 if (p2p->cfg->invitation_result)
4082 p2p->cfg->invitation_result(
4083 p2p->cfg->cb_ctx, -1, NULL, NULL,
4084 p2p->invite_peer->info.p2p_device_addr,
4087 p2p_set_state(p2p, P2P_IDLE);
4092 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
4094 struct p2p_data *p2p = eloop_ctx;
4096 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
4099 if (p2p->drv_in_listen) {
4100 p2p_dbg(p2p, "Driver is still in listen state - stop it");
4101 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
4104 switch (p2p->state) {
4106 /* Check if we timed out waiting for PD req */
4107 if (p2p->pending_action_state == P2P_PENDING_PD)
4108 p2p_timeout_prov_disc_req(p2p);
4111 /* Check if we timed out waiting for PD req */
4112 if (p2p->pending_action_state == P2P_PENDING_PD)
4113 p2p_timeout_prov_disc_req(p2p);
4114 if (p2p->search_delay && !p2p->in_search_delay) {
4115 p2p_dbg(p2p, "Delay search operation by %u ms",
4117 p2p->in_search_delay = 1;
4118 p2p_set_timeout(p2p, p2p->search_delay / 1000,
4119 (p2p->search_delay % 1000) * 1000);
4122 p2p->in_search_delay = 0;
4126 p2p_timeout_connect(p2p);
4128 case P2P_CONNECT_LISTEN:
4129 p2p_timeout_connect_listen(p2p);
4133 case P2P_LISTEN_ONLY:
4134 /* Check if we timed out waiting for PD req */
4135 if (p2p->pending_action_state == P2P_PENDING_PD)
4136 p2p_timeout_prov_disc_req(p2p);
4138 if (p2p->ext_listen_only) {
4139 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4140 p2p->ext_listen_only = 0;
4141 p2p_set_state(p2p, P2P_IDLE);
4144 case P2P_WAIT_PEER_CONNECT:
4145 p2p_timeout_wait_peer_connect(p2p);
4147 case P2P_WAIT_PEER_IDLE:
4148 p2p_timeout_wait_peer_idle(p2p);
4150 case P2P_SD_DURING_FIND:
4151 p2p_timeout_sd_during_find(p2p);
4153 case P2P_PROVISIONING:
4155 case P2P_PD_DURING_FIND:
4156 p2p_timeout_prov_disc_during_find(p2p);
4159 p2p_timeout_invite(p2p);
4161 case P2P_INVITE_LISTEN:
4162 p2p_timeout_invite_listen(p2p);
4168 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4170 struct p2p_device *dev;
4172 dev = p2p_get_device(p2p, peer_addr);
4173 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4174 MACSTR, MAC2STR(peer_addr));
4176 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4179 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4180 dev->flags |= P2P_DEV_USER_REJECTED;
4185 const char * p2p_wps_method_text(enum p2p_wps_method method)
4190 case WPS_PIN_DISPLAY:
4192 case WPS_PIN_KEYPAD:
4206 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4221 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4222 const u8 *addr, int next)
4224 struct p2p_device *dev;
4227 dev = p2p_get_device(p2p, addr);
4229 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4232 dev = dl_list_first(&dev->list, struct p2p_device, list);
4233 if (&dev->list == &p2p->devices)
4244 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4245 char *buf, size_t buflen)
4247 struct p2p_device *dev;
4250 struct os_reltime now;
4255 dev = (struct p2p_device *) (((u8 *) info) -
4256 offsetof(struct p2p_device, info));
4261 os_get_reltime(&now);
4262 res = os_snprintf(pos, end - pos,
4266 "interface_addr=" MACSTR "\n"
4267 "member_in_go_dev=" MACSTR "\n"
4268 "member_in_go_iface=" MACSTR "\n"
4269 "go_neg_req_sent=%d\n"
4272 "intended_addr=" MACSTR "\n"
4275 "req_config_methods=0x%x\n"
4276 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4278 "invitation_reqs=%u\n",
4279 (int) (now.sec - dev->last_seen.sec),
4281 p2p_wps_method_text(dev->wps_method),
4282 MAC2STR(dev->interface_addr),
4283 MAC2STR(dev->member_in_go_dev),
4284 MAC2STR(dev->member_in_go_iface),
4285 dev->go_neg_req_sent,
4286 p2p_go_state_text(dev->go_state),
4288 MAC2STR(dev->intended_addr),
4289 dev->country[0] ? dev->country[0] : '_',
4290 dev->country[1] ? dev->country[1] : '_',
4292 dev->req_config_methods,
4293 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4294 "[PROBE_REQ_ONLY]" : "",
4295 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4296 dev->flags & P2P_DEV_NOT_YET_READY ?
4297 "[NOT_YET_READY]" : "",
4298 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4299 "[PD_PEER_DISPLAY]" : "",
4300 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4301 "[PD_PEER_KEYPAD]" : "",
4302 dev->flags & P2P_DEV_PD_PEER_P2PS ?
4303 "[PD_PEER_P2PS]" : "",
4304 dev->flags & P2P_DEV_USER_REJECTED ?
4305 "[USER_REJECTED]" : "",
4306 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4307 "[PEER_WAITING_RESPONSE]" : "",
4308 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4309 "[PREFER_PERSISTENT_GROUP]" : "",
4310 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4311 "[WAIT_GO_NEG_RESPONSE]" : "",
4312 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4313 "[WAIT_GO_NEG_CONFIRM]" : "",
4314 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4315 "[GROUP_CLIENT_ONLY]" : "",
4316 dev->flags & P2P_DEV_FORCE_FREQ ?
4317 "[FORCE_FREQ]" : "",
4318 dev->flags & P2P_DEV_PD_FOR_JOIN ?
4319 "[PD_FOR_JOIN]" : "",
4320 dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4321 "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4323 dev->invitation_reqs);
4324 if (os_snprintf_error(end - pos, res))
4328 if (dev->ext_listen_period) {
4329 res = os_snprintf(pos, end - pos,
4330 "ext_listen_period=%u\n"
4331 "ext_listen_interval=%u\n",
4332 dev->ext_listen_period,
4333 dev->ext_listen_interval);
4334 if (os_snprintf_error(end - pos, res))
4339 if (dev->oper_ssid_len) {
4340 res = os_snprintf(pos, end - pos,
4342 wpa_ssid_txt(dev->oper_ssid,
4343 dev->oper_ssid_len));
4344 if (os_snprintf_error(end - pos, res))
4349 #ifdef CONFIG_WIFI_DISPLAY
4350 if (dev->info.wfd_subelems) {
4351 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4352 if (os_snprintf_error(end - pos, res))
4356 pos += wpa_snprintf_hex(pos, end - pos,
4357 wpabuf_head(dev->info.wfd_subelems),
4358 wpabuf_len(dev->info.wfd_subelems));
4360 res = os_snprintf(pos, end - pos, "\n");
4361 if (os_snprintf_error(end - pos, res))
4365 #endif /* CONFIG_WIFI_DISPLAY */
4371 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4373 return p2p_get_device(p2p, addr) != NULL;
4377 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4380 p2p_dbg(p2p, "Client discoverability enabled");
4381 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4383 p2p_dbg(p2p, "Client discoverability disabled");
4384 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4389 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4390 u32 duration2, u32 interval2)
4393 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4396 req = wpabuf_alloc(100);
4400 if (duration1 || interval1) {
4401 os_memset(&desc1, 0, sizeof(desc1));
4402 desc1.count_type = 1;
4403 desc1.duration = duration1;
4404 desc1.interval = interval1;
4407 if (duration2 || interval2) {
4408 os_memset(&desc2, 0, sizeof(desc2));
4409 desc2.count_type = 2;
4410 desc2.duration = duration2;
4411 desc2.interval = interval2;
4416 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4417 len = p2p_buf_add_ie_hdr(req);
4418 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4419 p2p_buf_update_ie_hdr(req, len);
4425 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4426 const u8 *own_interface_addr, unsigned int freq,
4427 u32 duration1, u32 interval1, u32 duration2,
4432 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4433 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4435 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4436 freq, duration1, interval1, duration2, interval2);
4438 req = p2p_build_presence_req(duration1, interval1, duration2,
4443 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4444 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4446 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4447 p2p_dbg(p2p, "Failed to send Action frame");
4455 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4456 size_t noa_len, u8 dialog_token)
4458 struct wpabuf *resp;
4461 resp = wpabuf_alloc(100 + noa_len);
4465 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4466 len = p2p_buf_add_ie_hdr(resp);
4467 p2p_buf_add_status(resp, status);
4469 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4470 wpabuf_put_le16(resp, noa_len);
4471 wpabuf_put_data(resp, noa, noa_len);
4473 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4474 p2p_buf_update_ie_hdr(resp, len);
4480 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4481 const u8 *sa, const u8 *data, size_t len,
4484 struct p2p_message msg;
4486 struct wpabuf *resp;
4488 struct p2p_group *group = NULL;
4493 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4495 for (g = 0; g < p2p->num_groups; g++) {
4496 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4498 group = p2p->groups[g];
4502 if (group == NULL) {
4503 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4504 MACSTR, MAC2STR(da));
4508 if (p2p_parse(data, len, &msg) < 0) {
4509 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4510 status = P2P_SC_FAIL_INVALID_PARAMS;
4515 if (msg.noa == NULL) {
4516 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4517 status = P2P_SC_FAIL_INVALID_PARAMS;
4521 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4524 if (p2p->cfg->get_noa)
4525 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4529 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4530 noa_len > 0 ? noa_len : 0,
4533 p2p_parse_free(&msg);
4537 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4538 if (p2p_send_action(p2p, rx_freq, sa, da, da,
4539 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4540 p2p_dbg(p2p, "Failed to send Action frame");
4546 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4547 const u8 *sa, const u8 *data, size_t len)
4549 struct p2p_message msg;
4551 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4553 if (p2p_parse(data, len, &msg) < 0) {
4554 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4558 if (msg.status == NULL || msg.noa == NULL) {
4559 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4560 p2p_parse_free(&msg);
4564 if (p2p->cfg->presence_resp) {
4565 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4566 msg.noa, msg.noa_len);
4570 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4572 p2p_parse_free(&msg);
4576 p2p_dbg(p2p, "P2P Presence Request was accepted");
4577 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4578 msg.noa, msg.noa_len);
4579 /* TODO: process NoA */
4580 p2p_parse_free(&msg);
4584 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4586 struct p2p_data *p2p = eloop_ctx;
4588 if (p2p->ext_listen_interval) {
4589 /* Schedule next extended listen timeout */
4590 eloop_register_timeout(p2p->ext_listen_interval_sec,
4591 p2p->ext_listen_interval_usec,
4592 p2p_ext_listen_timeout, p2p, NULL);
4595 if ((p2p->cfg->is_p2p_in_progress &&
4596 p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4597 (p2p->pending_action_state == P2P_PENDING_PD &&
4598 p2p->pd_retries > 0)) {
4599 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4600 p2p_state_txt(p2p->state));
4604 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4606 * This should not really happen, but it looks like the Listen
4607 * command may fail is something else (e.g., a scan) was
4608 * running at an inconvenient time. As a workaround, allow new
4609 * Extended Listen operation to be started.
4611 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4612 p2p->ext_listen_only = 0;
4613 p2p_set_state(p2p, P2P_IDLE);
4616 if (p2p->state != P2P_IDLE) {
4617 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4621 p2p_dbg(p2p, "Extended Listen timeout");
4622 p2p->ext_listen_only = 1;
4623 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4624 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4625 p2p->ext_listen_only = 0;
4630 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4631 unsigned int interval)
4633 if (period > 65535 || interval > 65535 || period > interval ||
4634 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4635 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4640 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4642 if (interval == 0) {
4643 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4644 p2p->ext_listen_period = 0;
4645 p2p->ext_listen_interval = 0;
4649 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4651 p2p->ext_listen_period = period;
4652 p2p->ext_listen_interval = interval;
4653 p2p->ext_listen_interval_sec = interval / 1000;
4654 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4656 eloop_register_timeout(p2p->ext_listen_interval_sec,
4657 p2p->ext_listen_interval_usec,
4658 p2p_ext_listen_timeout, p2p, NULL);
4664 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4665 const u8 *ie, size_t ie_len)
4667 struct p2p_message msg;
4669 if (bssid == NULL || ie == NULL)
4672 os_memset(&msg, 0, sizeof(msg));
4673 if (p2p_parse_ies(ie, ie_len, &msg))
4675 if (msg.minor_reason_code == NULL) {
4676 p2p_parse_free(&msg);
4680 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4681 " reason_code=%u minor_reason_code=%u",
4682 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4684 p2p_parse_free(&msg);
4688 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4689 const u8 *ie, size_t ie_len)
4691 struct p2p_message msg;
4693 if (bssid == NULL || ie == NULL)
4696 os_memset(&msg, 0, sizeof(msg));
4697 if (p2p_parse_ies(ie, ie_len, &msg))
4699 if (msg.minor_reason_code == NULL) {
4700 p2p_parse_free(&msg);
4704 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4705 " reason_code=%u minor_reason_code=%u",
4706 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4708 p2p_parse_free(&msg);
4712 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4715 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4716 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4718 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4719 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4724 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4727 return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4731 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4734 if (p2p_channel_to_freq(reg_class, channel) < 0)
4738 * Listen channel was set in configuration or set by control interface;
4739 * cannot override it.
4741 if (p2p->cfg->channel_forced && forced == 0) {
4743 "Listen channel was previously configured - do not override based on optimization");
4747 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4748 reg_class, channel);
4750 if (p2p->state == P2P_IDLE) {
4751 p2p->cfg->reg_class = reg_class;
4752 p2p->cfg->channel = channel;
4753 p2p->cfg->channel_forced = forced;
4755 p2p_dbg(p2p, "Defer setting listen channel");
4756 p2p->pending_reg_class = reg_class;
4757 p2p->pending_channel = channel;
4758 p2p->pending_channel_forced = forced;
4765 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4767 return p2p->cfg->channel;
4771 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4773 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4774 if (postfix == NULL) {
4775 p2p->cfg->ssid_postfix_len = 0;
4778 if (len > sizeof(p2p->cfg->ssid_postfix))
4780 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4781 p2p->cfg->ssid_postfix_len = len;
4786 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4789 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4792 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4793 op_reg_class, op_channel);
4794 p2p->cfg->op_reg_class = op_reg_class;
4795 p2p->cfg->op_channel = op_channel;
4796 p2p->cfg->cfg_op_channel = cfg_op_channel;
4801 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4802 const struct p2p_channel *pref_chan)
4804 struct p2p_channel *n;
4807 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4810 os_memcpy(n, pref_chan,
4811 num_pref_chan * sizeof(struct p2p_channel));
4815 os_free(p2p->cfg->pref_chan);
4816 p2p->cfg->pref_chan = n;
4817 p2p->cfg->num_pref_chan = num_pref_chan;
4823 int p2p_set_no_go_freq(struct p2p_data *p2p,
4824 const struct wpa_freq_range_list *list)
4826 struct wpa_freq_range *tmp;
4828 if (list == NULL || list->num == 0) {
4829 os_free(p2p->no_go_freq.range);
4830 p2p->no_go_freq.range = NULL;
4831 p2p->no_go_freq.num = 0;
4835 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4838 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4839 os_free(p2p->no_go_freq.range);
4840 p2p->no_go_freq.range = tmp;
4841 p2p->no_go_freq.num = list->num;
4842 p2p_dbg(p2p, "Updated no GO chan list");
4848 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4851 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4852 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4854 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4859 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4862 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4865 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4870 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4872 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4873 if (is_zero_ether_addr(p2p->peer_filter))
4874 p2p_dbg(p2p, "Disable peer filter");
4876 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4877 MAC2STR(p2p->peer_filter));
4881 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4883 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4884 if (p2p->cross_connect == enabled)
4886 p2p->cross_connect = enabled;
4887 /* TODO: may need to tear down any action group where we are GO(?) */
4891 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4893 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4896 if (dev->oper_freq <= 0)
4898 return dev->oper_freq;
4902 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4904 p2p_dbg(p2p, "Intra BSS distribution %s",
4905 enabled ? "enabled" : "disabled");
4906 p2p->cfg->p2p_intra_bss = enabled;
4910 void p2p_update_channel_list(struct p2p_data *p2p,
4911 const struct p2p_channels *chan,
4912 const struct p2p_channels *cli_chan)
4914 p2p_dbg(p2p, "Update channel list");
4915 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4916 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4917 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4918 sizeof(struct p2p_channels));
4919 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4923 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4924 const u8 *src, const u8 *bssid, const u8 *buf,
4925 size_t len, unsigned int wait_time)
4927 if (p2p->p2p_scan_running) {
4928 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4929 if (p2p->after_scan_tx) {
4930 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4931 os_free(p2p->after_scan_tx);
4933 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4935 if (p2p->after_scan_tx == NULL)
4937 p2p->after_scan_tx->freq = freq;
4938 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4939 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4940 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4941 p2p->after_scan_tx->len = len;
4942 p2p->after_scan_tx->wait_time = wait_time;
4943 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4947 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4948 buf, len, wait_time);
4952 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4955 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4956 freq_24, freq_5, freq_overall);
4957 p2p->best_freq_24 = freq_24;
4958 p2p->best_freq_5 = freq_5;
4959 p2p->best_freq_overall = freq_overall;
4963 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4965 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4966 p2p->own_freq_preference = freq;
4970 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4972 if (p2p == NULL || p2p->go_neg_peer == NULL)
4974 return p2p->go_neg_peer->info.p2p_device_addr;
4978 const struct p2p_peer_info *
4979 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4981 struct p2p_device *dev;
4984 dev = p2p_get_device(p2p, addr);
4989 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4995 dev = dl_list_first(&dev->list,
4998 if (!dev || &dev->list == &p2p->devices)
5000 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
5003 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
5006 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
5007 dev = dl_list_first(&dev->list,
5010 if (!dev || &dev->list == &p2p->devices)
5019 int p2p_in_progress(struct p2p_data *p2p)
5023 if (p2p->state == P2P_SEARCH)
5025 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
5029 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
5033 p2p->go_timeout = go_timeout;
5034 p2p->client_timeout = client_timeout;
5039 #ifdef CONFIG_WIFI_DISPLAY
5041 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
5044 struct p2p_group *group;
5046 for (g = 0; g < p2p->num_groups; g++) {
5047 group = p2p->groups[g];
5048 p2p_group_force_beacon_update_ies(group);
5053 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
5055 wpabuf_free(p2p->wfd_ie_beacon);
5056 p2p->wfd_ie_beacon = ie;
5057 p2p_update_wfd_ie_groups(p2p);
5062 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
5064 wpabuf_free(p2p->wfd_ie_probe_req);
5065 p2p->wfd_ie_probe_req = ie;
5070 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
5072 wpabuf_free(p2p->wfd_ie_probe_resp);
5073 p2p->wfd_ie_probe_resp = ie;
5074 p2p_update_wfd_ie_groups(p2p);
5079 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
5081 wpabuf_free(p2p->wfd_ie_assoc_req);
5082 p2p->wfd_ie_assoc_req = ie;
5087 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
5089 wpabuf_free(p2p->wfd_ie_invitation);
5090 p2p->wfd_ie_invitation = ie;
5095 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
5097 wpabuf_free(p2p->wfd_ie_prov_disc_req);
5098 p2p->wfd_ie_prov_disc_req = ie;
5103 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
5105 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
5106 p2p->wfd_ie_prov_disc_resp = ie;
5111 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5113 wpabuf_free(p2p->wfd_ie_go_neg);
5114 p2p->wfd_ie_go_neg = ie;
5119 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5121 wpabuf_free(p2p->wfd_dev_info);
5123 p2p->wfd_dev_info = wpabuf_dup(elem);
5124 if (p2p->wfd_dev_info == NULL)
5127 p2p->wfd_dev_info = NULL;
5133 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5135 wpabuf_free(p2p->wfd_assoc_bssid);
5137 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5138 if (p2p->wfd_assoc_bssid == NULL)
5141 p2p->wfd_assoc_bssid = NULL;
5147 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5148 const struct wpabuf *elem)
5150 wpabuf_free(p2p->wfd_coupled_sink_info);
5152 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5153 if (p2p->wfd_coupled_sink_info == NULL)
5156 p2p->wfd_coupled_sink_info = NULL;
5161 #endif /* CONFIG_WIFI_DISPLAY */
5164 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5167 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5170 p2p->min_disc_int = min_disc_int;
5171 p2p->max_disc_int = max_disc_int;
5172 p2p->max_disc_tu = max_disc_tu;
5173 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5174 min_disc_int, max_disc_int, max_disc_tu);
5180 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5185 if (!p2p->cfg->debug_print)
5189 vsnprintf(buf, sizeof(buf), fmt, ap);
5190 buf[sizeof(buf) - 1] = '\0';
5192 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5196 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5201 if (!p2p->cfg->debug_print)
5205 vsnprintf(buf, sizeof(buf), fmt, ap);
5206 buf[sizeof(buf) - 1] = '\0';
5208 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5212 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5217 if (!p2p->cfg->debug_print)
5221 vsnprintf(buf, sizeof(buf), fmt, ap);
5222 buf[sizeof(buf) - 1] = '\0';
5224 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5228 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5229 void (*peer_callback)(struct p2p_peer_info *peer,
5233 struct p2p_device *dev, *n;
5235 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5236 peer_callback(&dev->info, user_data);
5241 #ifdef CONFIG_WPS_NFC
5243 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5245 const u8 *go_dev_addr,
5246 const u8 *ssid, size_t ssid_len)
5249 u8 op_class, channel;
5250 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5252 buf = wpabuf_alloc(1000);
5256 op_class = p2p->cfg->reg_class;
5257 channel = p2p->cfg->channel;
5259 p2p_buf_add_capability(buf, p2p->dev_capab &
5260 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5261 p2p_buf_add_device_info(buf, p2p, NULL);
5263 if (p2p->num_groups > 0) {
5264 int freq = p2p_group_get_freq(p2p->groups[0]);
5265 role = P2P_GO_IN_A_GROUP;
5266 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5268 "Unknown GO operating frequency %d MHz for NFC handover",
5273 } else if (client_freq > 0) {
5274 role = P2P_CLIENT_IN_A_GROUP;
5275 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5277 "Unknown client operating frequency %d MHz for NFC handover",
5284 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5287 if (p2p->num_groups > 0) {
5288 /* Limit number of clients to avoid very long message */
5289 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5290 p2p_group_buf_add_id(p2p->groups[0], buf);
5291 } else if (client_freq > 0 &&
5292 go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5293 ssid && ssid_len > 0) {
5295 * Add the optional P2P Group ID to indicate in which group this
5296 * device is a P2P Client.
5298 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5305 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5307 const u8 *go_dev_addr,
5308 const u8 *ssid, size_t ssid_len)
5310 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5315 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5317 const u8 *go_dev_addr,
5318 const u8 *ssid, size_t ssid_len)
5320 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5325 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5326 struct p2p_nfc_params *params)
5328 struct p2p_message msg;
5329 struct p2p_device *dev;
5330 const u8 *p2p_dev_addr;
5332 enum p2p_role_indication role;
5334 params->next_step = NO_ACTION;
5336 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5337 params->p2p_attr, params->p2p_len, &msg)) {
5338 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5339 p2p_parse_free(&msg);
5343 if (msg.p2p_device_addr)
5344 p2p_dev_addr = msg.p2p_device_addr;
5345 else if (msg.device_id)
5346 p2p_dev_addr = msg.device_id;
5348 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5349 p2p_parse_free(&msg);
5353 if (msg.oob_dev_password) {
5354 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5355 msg.oob_dev_password_len);
5356 params->oob_dev_pw_len = msg.oob_dev_password_len;
5359 dev = p2p_create_device(p2p, p2p_dev_addr);
5361 p2p_parse_free(&msg);
5365 params->peer = &dev->info;
5367 os_get_reltime(&dev->last_seen);
5368 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5369 p2p_copy_wps_info(p2p, dev, 0, &msg);
5371 if (!msg.oob_go_neg_channel) {
5372 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5373 p2p_parse_free(&msg);
5377 if (msg.oob_go_neg_channel[3] == 0 &&
5378 msg.oob_go_neg_channel[4] == 0)
5381 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5382 msg.oob_go_neg_channel[4]);
5384 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5385 p2p_parse_free(&msg);
5388 role = msg.oob_go_neg_channel[5];
5390 if (role == P2P_GO_IN_A_GROUP) {
5391 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5392 params->go_freq = freq;
5393 } else if (role == P2P_CLIENT_IN_A_GROUP) {
5394 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5396 params->go_freq = freq;
5398 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5399 dev->oob_go_neg_freq = freq;
5401 if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5402 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5405 p2p_dbg(p2p, "Own listen channel not known");
5406 p2p_parse_free(&msg);
5409 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5410 dev->oob_go_neg_freq = freq;
5414 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5415 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5416 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5417 params->go_ssid_len);
5420 if (dev->flags & P2P_DEV_USER_REJECTED) {
5421 p2p_dbg(p2p, "Do not report rejected device");
5422 p2p_parse_free(&msg);
5426 if (!(dev->flags & P2P_DEV_REPORTED)) {
5427 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5428 !(dev->flags & P2P_DEV_REPORTED_ONCE));
5429 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5431 p2p_parse_free(&msg);
5433 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5434 params->next_step = BOTH_GO;
5435 else if (role == P2P_GO_IN_A_GROUP)
5436 params->next_step = JOIN_GROUP;
5437 else if (role == P2P_CLIENT_IN_A_GROUP) {
5438 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5439 params->next_step = PEER_CLIENT;
5440 } else if (p2p->num_groups > 0)
5441 params->next_step = AUTH_JOIN;
5442 else if (params->sel)
5443 params->next_step = INIT_GO_NEG;
5445 params->next_step = RESP_GO_NEG;
5451 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5453 const u8 *own_interface_addr)
5456 p2p->authorized_oob_dev_pw_id = dev_pw_id;
5457 if (dev_pw_id == 0) {
5458 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5462 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5465 p2p->go_intent = go_intent;
5466 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5469 #endif /* CONFIG_WPS_NFC */
5472 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5474 if (len < 8 || len > 63)
5476 p2p->cfg->passphrase_len = len;
5481 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5483 p2p->vendor_elem = vendor_elem;
5487 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5489 struct p2p_data *p2p = eloop_ctx;
5492 "Timeout on waiting peer to become ready for GO Negotiation");
5493 p2p_go_neg_failed(p2p, -1);
5497 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
5498 const unsigned int *pref_freq_list,
5503 if (size > P2P_MAX_PREF_CHANNELS)
5504 size = P2P_MAX_PREF_CHANNELS;
5505 p2p->num_pref_freq = size;
5506 for (i = 0; i < size; i++) {
5507 p2p->pref_freq_list[i] = pref_freq_list[i];
5508 p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz",
5509 i, p2p->pref_freq_list[i]);
5514 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p,
5517 struct wpabuf *ies, *buf;
5518 u8 addr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
5521 ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
5523 wpa_printf(MSG_ERROR,
5524 "CTRL: Failed to build Probe Response IEs");
5528 buf = wpabuf_alloc(200 + wpabuf_len(ies));
5534 ret = p2p_build_probe_resp_buf(p2p, buf, ies, addr, freq);