2 * Wi-Fi Direct - P2P module
3 * Copyright (c) 2009-2010, Atheros Communications
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
13 #include "common/ieee802_11_defs.h"
14 #include "common/ieee802_11_common.h"
15 #include "common/wpa_ctrl.h"
16 #include "crypto/sha256.h"
17 #include "crypto/crypto.h"
18 #include "wps/wps_i.h"
23 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
24 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
25 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
26 const u8 *sa, const u8 *data, size_t len,
28 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
29 const u8 *sa, const u8 *data,
31 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
32 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
36 * p2p_scan recovery timeout
38 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
39 * timeout for this to avoid hitting P2P timeout unnecessarily.
41 #define P2P_SCAN_TIMEOUT 35
44 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
45 * entries will be removed
47 #ifndef P2P_PEER_EXPIRATION_AGE
48 #define P2P_PEER_EXPIRATION_AGE 60
49 #endif /* P2P_PEER_EXPIRATION_AGE */
51 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
53 static void p2p_expire_peers(struct p2p_data *p2p)
55 struct p2p_device *dev, *n;
56 struct os_reltime now;
60 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
61 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
64 if (dev == p2p->go_neg_peer) {
66 * GO Negotiation is in progress with the peer, so
67 * don't expire the peer entry until GO Negotiation
73 if (p2p->cfg->go_connected &&
74 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
75 dev->info.p2p_device_addr)) {
77 * We are connected as a client to a group in which the
78 * peer is the GO, so do not expire the peer entry.
80 os_get_reltime(&dev->last_seen);
84 for (i = 0; i < p2p->num_groups; i++) {
85 if (p2p_group_is_client_connected(
86 p2p->groups[i], dev->info.p2p_device_addr))
89 if (i < p2p->num_groups) {
91 * The peer is connected as a client in a group where
92 * we are the GO, so do not expire the peer entry.
94 os_get_reltime(&dev->last_seen);
98 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
99 MAC2STR(dev->info.p2p_device_addr));
100 dl_list_del(&dev->list);
101 p2p_device_free(p2p, dev);
106 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
108 struct p2p_data *p2p = eloop_ctx;
109 p2p_expire_peers(p2p);
110 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
111 p2p_expiration_timeout, p2p, NULL);
115 static const char * p2p_state_txt(int state)
124 case P2P_CONNECT_LISTEN:
125 return "CONNECT_LISTEN";
128 case P2P_LISTEN_ONLY:
129 return "LISTEN_ONLY";
130 case P2P_WAIT_PEER_CONNECT:
131 return "WAIT_PEER_CONNECT";
132 case P2P_WAIT_PEER_IDLE:
133 return "WAIT_PEER_IDLE";
134 case P2P_SD_DURING_FIND:
135 return "SD_DURING_FIND";
136 case P2P_PROVISIONING:
137 return "PROVISIONING";
138 case P2P_PD_DURING_FIND:
139 return "PD_DURING_FIND";
142 case P2P_INVITE_LISTEN:
143 return "INVITE_LISTEN";
150 const char * p2p_get_state_txt(struct p2p_data *p2p)
152 return p2p_state_txt(p2p->state);
156 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
158 struct p2p_device *dev = NULL;
163 dev = p2p_get_device(p2p, addr);
165 return dev->wps_prov_info;
171 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
173 struct p2p_device *dev = NULL;
178 dev = p2p_get_device(p2p, addr);
180 dev->wps_prov_info = 0;
184 void p2p_set_state(struct p2p_data *p2p, int new_state)
186 p2p_dbg(p2p, "State %s -> %s",
187 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
188 p2p->state = new_state;
190 if (new_state == P2P_IDLE && p2p->pending_channel) {
191 p2p_dbg(p2p, "Apply change in listen channel");
192 p2p->cfg->reg_class = p2p->pending_reg_class;
193 p2p->cfg->channel = p2p->pending_channel;
194 p2p->pending_reg_class = 0;
195 p2p->pending_channel = 0;
200 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
202 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
203 p2p_state_txt(p2p->state), sec, usec);
204 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
205 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
209 void p2p_clear_timeout(struct p2p_data *p2p)
211 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
212 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
216 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
218 struct p2p_go_neg_results res;
219 struct p2p_device *peer = p2p->go_neg_peer;
224 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
225 if (p2p->state != P2P_SEARCH) {
227 * Clear timeouts related to GO Negotiation if no new p2p_find
230 p2p_clear_timeout(p2p);
231 p2p_set_state(p2p, P2P_IDLE);
234 peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
235 peer->wps_method = WPS_NOT_READY;
237 wpabuf_free(peer->go_neg_conf);
238 peer->go_neg_conf = NULL;
239 p2p->go_neg_peer = NULL;
241 os_memset(&res, 0, sizeof(res));
243 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
244 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
245 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
249 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
255 p2p_dbg(p2p, "Starting short listen state (state=%s)",
256 p2p_state_txt(p2p->state));
258 if (p2p->pending_listen_freq) {
259 /* We have a pending p2p_listen request */
260 p2p_dbg(p2p, "p2p_listen command pending already");
264 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
266 p2p_dbg(p2p, "Unknown regulatory class/channel");
270 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
272 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
273 p2p->min_disc_int) * 100;
274 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
275 tu = p2p->max_disc_tu;
276 if (!dev_disc && tu < 100)
277 tu = 100; /* Need to wait in non-device discovery use cases */
278 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
279 tu = p2p->cfg->max_listen * 1000 / 1024;
282 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
283 p2p_set_timeout(p2p, 0, 0);
287 ies = p2p_build_probe_resp_ies(p2p);
291 p2p->pending_listen_freq = freq;
292 p2p->pending_listen_sec = 0;
293 p2p->pending_listen_usec = 1024 * tu;
295 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
297 p2p_dbg(p2p, "Failed to start listen mode");
298 p2p->pending_listen_freq = 0;
304 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
309 p2p_dbg(p2p, "Going to listen(only) state");
311 if (p2p->pending_listen_freq) {
312 /* We have a pending p2p_listen request */
313 p2p_dbg(p2p, "p2p_listen command pending already");
317 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
319 p2p_dbg(p2p, "Unknown regulatory class/channel");
323 p2p->pending_listen_sec = timeout / 1000;
324 p2p->pending_listen_usec = (timeout % 1000) * 1000;
326 if (p2p->p2p_scan_running) {
327 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
328 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
331 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
332 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
336 ies = p2p_build_probe_resp_ies(p2p);
340 p2p->pending_listen_freq = freq;
342 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
343 p2p_dbg(p2p, "Failed to start listen mode");
344 p2p->pending_listen_freq = 0;
350 p2p_set_state(p2p, P2P_LISTEN_ONLY);
356 static void p2p_device_clear_reported(struct p2p_data *p2p)
358 struct p2p_device *dev;
359 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
360 dev->flags &= ~P2P_DEV_REPORTED;
367 * p2p_get_device - Fetch a peer entry
368 * @p2p: P2P module context from p2p_init()
369 * @addr: P2P Device Address of the peer
370 * Returns: Pointer to the device entry or %NULL if not found
372 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
374 struct p2p_device *dev;
375 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
376 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
384 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
385 * @p2p: P2P module context from p2p_init()
386 * @addr: P2P Interface Address of the peer
387 * Returns: Pointer to the device entry or %NULL if not found
389 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
392 struct p2p_device *dev;
393 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
394 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
402 * p2p_create_device - Create a peer entry
403 * @p2p: P2P module context from p2p_init()
404 * @addr: P2P Device Address of the peer
405 * Returns: Pointer to the device entry or %NULL on failure
407 * If there is already an entry for the peer, it will be returned instead of
408 * creating a new one.
410 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
413 struct p2p_device *dev, *oldest = NULL;
416 dev = p2p_get_device(p2p, addr);
420 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
422 if (oldest == NULL ||
423 os_reltime_before(&dev->last_seen, &oldest->last_seen))
426 if (count + 1 > p2p->cfg->max_peers && oldest) {
427 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
428 dl_list_del(&oldest->list);
429 p2p_device_free(p2p, oldest);
432 dev = os_zalloc(sizeof(*dev));
435 dl_list_add(&p2p->devices, &dev->list);
436 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
442 static void p2p_copy_client_info(struct p2p_device *dev,
443 struct p2p_client_info *cli)
445 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
446 dev->info.device_name[cli->dev_name_len] = '\0';
447 dev->info.dev_capab = cli->dev_capab;
448 dev->info.config_methods = cli->config_methods;
449 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
450 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
451 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
452 dev->info.wps_sec_dev_type_list_len);
456 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
457 const u8 *go_interface_addr, int freq,
458 const u8 *gi, size_t gi_len)
460 struct p2p_group_info info;
462 struct p2p_device *dev;
467 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
471 * Clear old data for this group; if the devices are still in the
472 * group, the information will be restored in the loop following this.
474 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
475 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
477 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
478 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
482 for (c = 0; c < info.num_clients; c++) {
483 struct p2p_client_info *cli = &info.client[c];
484 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
486 continue; /* ignore our own entry */
487 dev = p2p_get_device(p2p, cli->p2p_device_addr);
489 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
490 P2P_DEV_PROBE_REQ_ONLY)) {
492 * Update information since we have not
493 * received this directly from the client.
495 p2p_copy_client_info(dev, cli);
498 * Need to update P2P Client Discoverability
499 * flag since it is valid only in P2P Group
502 dev->info.dev_capab &=
503 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
504 dev->info.dev_capab |=
506 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
508 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
509 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
512 dev = p2p_create_device(p2p, cli->p2p_device_addr);
515 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
516 p2p_copy_client_info(dev, cli);
517 dev->oper_freq = freq;
518 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
519 dev->info.p2p_device_addr,
521 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
524 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
526 os_get_reltime(&dev->last_seen);
527 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
528 os_memcpy(dev->member_in_go_iface, go_interface_addr,
536 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
537 int probe_req, const struct p2p_message *msg)
539 os_memcpy(dev->info.device_name, msg->device_name,
540 sizeof(dev->info.device_name));
542 if (msg->manufacturer &&
543 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
544 os_memset(dev->info.manufacturer, 0,
545 sizeof(dev->info.manufacturer));
546 os_memcpy(dev->info.manufacturer, msg->manufacturer,
547 msg->manufacturer_len);
550 if (msg->model_name &&
551 msg->model_name_len < sizeof(dev->info.model_name)) {
552 os_memset(dev->info.model_name, 0,
553 sizeof(dev->info.model_name));
554 os_memcpy(dev->info.model_name, msg->model_name,
555 msg->model_name_len);
558 if (msg->model_number &&
559 msg->model_number_len < sizeof(dev->info.model_number)) {
560 os_memset(dev->info.model_number, 0,
561 sizeof(dev->info.model_number));
562 os_memcpy(dev->info.model_number, msg->model_number,
563 msg->model_number_len);
566 if (msg->serial_number &&
567 msg->serial_number_len < sizeof(dev->info.serial_number)) {
568 os_memset(dev->info.serial_number, 0,
569 sizeof(dev->info.serial_number));
570 os_memcpy(dev->info.serial_number, msg->serial_number,
571 msg->serial_number_len);
574 if (msg->pri_dev_type)
575 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
576 sizeof(dev->info.pri_dev_type));
577 else if (msg->wps_pri_dev_type)
578 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
579 sizeof(dev->info.pri_dev_type));
581 if (msg->wps_sec_dev_type_list) {
582 os_memcpy(dev->info.wps_sec_dev_type_list,
583 msg->wps_sec_dev_type_list,
584 msg->wps_sec_dev_type_list_len);
585 dev->info.wps_sec_dev_type_list_len =
586 msg->wps_sec_dev_type_list_len;
589 if (msg->capability) {
591 * P2P Client Discoverability bit is reserved in all frames
592 * that use this function, so do not change its value here.
594 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
595 dev->info.dev_capab |= msg->capability[0] &
596 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
597 dev->info.group_capab = msg->capability[1];
600 if (msg->ext_listen_timing) {
601 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
602 dev->ext_listen_interval =
603 WPA_GET_LE16(msg->ext_listen_timing + 2);
607 u16 new_config_methods;
608 new_config_methods = msg->config_methods ?
609 msg->config_methods : msg->wps_config_methods;
610 if (new_config_methods &&
611 dev->info.config_methods != new_config_methods) {
612 p2p_dbg(p2p, "Update peer " MACSTR
613 " config_methods 0x%x -> 0x%x",
614 MAC2STR(dev->info.p2p_device_addr),
615 dev->info.config_methods,
617 dev->info.config_methods = new_config_methods;
623 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
629 wpabuf_free(dev->info.vendor_elems);
630 dev->info.vendor_elems = NULL;
634 for (pos = ies; pos + 1 < end; pos += len) {
641 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
645 u32 type = WPA_GET_BE32(pos);
647 if (type == WPA_IE_VENDOR_TYPE ||
648 type == WMM_IE_VENDOR_TYPE ||
649 type == WPS_IE_VENDOR_TYPE ||
650 type == P2P_IE_VENDOR_TYPE ||
651 type == WFD_IE_VENDOR_TYPE)
655 /* Unknown vendor element - make raw IE data available */
656 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
658 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
663 static int p2p_compare_wfd_info(struct p2p_device *dev,
664 const struct p2p_message *msg)
666 if (dev->info.wfd_subelems && msg->wfd_subelems) {
667 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
670 return os_memcmp(dev->info.wfd_subelems->buf,
671 msg->wfd_subelems->buf,
672 dev->info.wfd_subelems->used);
674 if (dev->info.wfd_subelems || msg->wfd_subelems)
682 * p2p_add_device - Add peer entries based on scan results or P2P frames
683 * @p2p: P2P module context from p2p_init()
684 * @addr: Source address of Beacon or Probe Response frame (may be either
685 * P2P Device Address or P2P Interface Address)
686 * @level: Signal level (signal strength of the received frame from the peer)
687 * @freq: Frequency on which the Beacon or Probe Response frame was received
688 * @rx_time: Time when the result was received
689 * @ies: IEs from the Beacon or Probe Response frame
690 * @ies_len: Length of ies buffer in octets
691 * @scan_res: Whether this was based on scan results
692 * Returns: 0 on success, -1 on failure
694 * If the scan result is for a GO, the clients in the group will also be added
695 * to the peer table. This function can also be used with some other frames
696 * like Provision Discovery Request that contains P2P Capability and P2P Device
699 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
700 struct os_reltime *rx_time, int level, const u8 *ies,
701 size_t ies_len, int scan_res)
703 struct p2p_device *dev;
704 struct p2p_message msg;
705 const u8 *p2p_dev_addr;
708 struct os_reltime time_now;
710 os_memset(&msg, 0, sizeof(msg));
711 if (p2p_parse_ies(ies, ies_len, &msg)) {
712 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
713 p2p_parse_free(&msg);
717 if (msg.p2p_device_addr)
718 p2p_dev_addr = msg.p2p_device_addr;
719 else if (msg.device_id)
720 p2p_dev_addr = msg.device_id;
722 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
723 p2p_parse_free(&msg);
727 if (!is_zero_ether_addr(p2p->peer_filter) &&
728 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
729 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
730 " due to peer filter", MAC2STR(p2p_dev_addr));
731 p2p_parse_free(&msg);
735 dev = p2p_create_device(p2p, p2p_dev_addr);
737 p2p_parse_free(&msg);
741 if (rx_time == NULL) {
742 os_get_reltime(&time_now);
747 * Update the device entry only if the new peer
748 * entry is newer than the one previously stored.
750 if (dev->last_seen.sec > 0 &&
751 os_reltime_before(rx_time, &dev->last_seen)) {
752 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
753 (unsigned int) rx_time->sec,
754 (unsigned int) rx_time->usec,
755 (unsigned int) dev->last_seen.sec,
756 (unsigned int) dev->last_seen.usec);
757 p2p_parse_free(&msg);
761 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
763 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
765 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
766 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
768 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
769 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
771 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
772 dev->oper_ssid_len = msg.ssid[1];
775 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
776 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
778 if (*msg.ds_params == 14)
781 ds_freq = 2407 + *msg.ds_params * 5;
782 if (freq != ds_freq) {
783 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
789 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
790 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
791 MACSTR " %d -> %d MHz (DS param %d)",
792 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
793 freq, msg.ds_params ? *msg.ds_params : -1);
796 dev->listen_freq = freq;
798 dev->oper_freq = freq;
800 dev->info.level = level;
802 p2p_copy_wps_info(p2p, dev, 0, &msg);
804 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
805 wpabuf_free(dev->info.wps_vendor_ext[i]);
806 dev->info.wps_vendor_ext[i] = NULL;
809 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
810 if (msg.wps_vendor_ext[i] == NULL)
812 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
813 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
814 if (dev->info.wps_vendor_ext[i] == NULL)
818 wfd_changed = p2p_compare_wfd_info(dev, &msg);
820 if (msg.wfd_subelems) {
821 wpabuf_free(dev->info.wfd_subelems);
822 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
826 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
827 msg.group_info, msg.group_info_len);
830 p2p_parse_free(&msg);
832 p2p_update_peer_vendor_elems(dev, ies, ies_len);
834 if (dev->flags & P2P_DEV_REPORTED && !wfd_changed)
837 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
838 freq, (unsigned int) rx_time->sec,
839 (unsigned int) rx_time->usec);
840 if (dev->flags & P2P_DEV_USER_REJECTED) {
841 p2p_dbg(p2p, "Do not report rejected device");
845 if (dev->info.config_methods == 0 &&
846 (freq == 2412 || freq == 2437 || freq == 2462)) {
848 * If we have only seen a Beacon frame from a GO, we do not yet
849 * know what WPS config methods it supports. Since some
850 * applications use config_methods value from P2P-DEVICE-FOUND
851 * events, postpone reporting this peer until we've fully
852 * discovered its capabilities.
854 * At least for now, do this only if the peer was detected on
855 * one of the social channels since that peer can be easily be
856 * found again and there are no limitations of having to use
857 * passive scan on this channels, so this can be done through
858 * Probe Response frame that includes the config_methods
861 p2p_dbg(p2p, "Do not report peer " MACSTR
862 " with unknown config methods", MAC2STR(addr));
866 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
867 !(dev->flags & P2P_DEV_REPORTED_ONCE));
868 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
874 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
878 if (p2p->go_neg_peer == dev) {
880 * If GO Negotiation is in progress, report that it has failed.
882 p2p_go_neg_failed(p2p, -1);
884 if (p2p->invite_peer == dev)
885 p2p->invite_peer = NULL;
886 if (p2p->sd_peer == dev)
888 if (p2p->pending_client_disc_go == dev)
889 p2p->pending_client_disc_go = NULL;
891 /* dev_lost() device, but only if it was previously dev_found() */
892 if (dev->flags & P2P_DEV_REPORTED_ONCE)
893 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
894 dev->info.p2p_device_addr);
896 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
897 wpabuf_free(dev->info.wps_vendor_ext[i]);
898 dev->info.wps_vendor_ext[i] = NULL;
901 wpabuf_free(dev->info.wfd_subelems);
902 wpabuf_free(dev->info.vendor_elems);
903 wpabuf_free(dev->go_neg_conf);
909 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
911 struct p2p_channels *c;
912 struct p2p_reg_class *cla;
919 c = &p2p->cfg->channels;
920 for (cl = 0; cl < c->reg_classes; cl++) {
921 cla = &c->reg_class[cl];
922 if (cla->reg_class != p2p->last_prog_scan_class)
924 for (ch = 0; ch < cla->channels; ch++) {
925 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
935 /* Start from beginning */
936 reg_class = c->reg_class[0].reg_class;
937 channel = c->reg_class[0].channel[0];
939 /* Pick the next channel */
941 if (ch == cla->channels) {
943 if (cl == c->reg_classes)
947 reg_class = c->reg_class[cl].reg_class;
948 channel = c->reg_class[cl].channel[ch];
951 freq = p2p_channel_to_freq(reg_class, channel);
952 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
953 reg_class, channel, freq);
954 p2p->last_prog_scan_class = reg_class;
955 p2p->last_prog_scan_chan = channel;
957 if (freq == 2412 || freq == 2437 || freq == 2462)
958 return 0; /* No need to add social channels */
963 static void p2p_search(struct p2p_data *p2p)
966 enum p2p_scan_type type;
967 u16 pw_id = DEV_PW_DEFAULT;
970 if (p2p->drv_in_listen) {
971 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
974 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
976 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
977 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
978 type = P2P_SCAN_SOCIAL_PLUS_ONE;
979 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
981 type = P2P_SCAN_SOCIAL;
982 p2p_dbg(p2p, "Starting search");
985 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
986 p2p->num_req_dev_types, p2p->req_dev_types,
987 p2p->find_dev_id, pw_id);
989 p2p_dbg(p2p, "Scan request schedule failed");
990 p2p_continue_find(p2p);
995 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
997 struct p2p_data *p2p = eloop_ctx;
998 p2p_dbg(p2p, "Find timeout -> stop");
1003 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1006 p2p_dbg(p2p, "Scan request failed");
1007 /* Do continue find even for the first p2p_find_scan */
1008 p2p_continue_find(p2p);
1010 p2p_dbg(p2p, "Running p2p_scan");
1011 p2p->p2p_scan_running = 1;
1012 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1013 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1019 static int p2p_run_after_scan(struct p2p_data *p2p)
1021 struct p2p_device *dev;
1022 enum p2p_after_scan op;
1024 if (p2p->after_scan_tx) {
1025 p2p->after_scan_tx_in_progress = 1;
1026 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1027 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1028 p2p->after_scan_tx->freq,
1029 p2p->after_scan_tx->dst,
1030 p2p->after_scan_tx->src,
1031 p2p->after_scan_tx->bssid,
1032 (u8 *) (p2p->after_scan_tx + 1),
1033 p2p->after_scan_tx->len,
1034 p2p->after_scan_tx->wait_time);
1035 os_free(p2p->after_scan_tx);
1036 p2p->after_scan_tx = NULL;
1040 op = p2p->start_after_scan;
1041 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1043 case P2P_AFTER_SCAN_NOTHING:
1045 case P2P_AFTER_SCAN_LISTEN:
1046 p2p_dbg(p2p, "Start previously requested Listen state");
1047 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1048 p2p->pending_listen_usec / 1000);
1050 case P2P_AFTER_SCAN_CONNECT:
1051 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1052 MAC2STR(p2p->after_scan_peer));
1053 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1055 p2p_dbg(p2p, "Peer not known anymore");
1058 p2p_connect_send(p2p, dev);
1066 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1068 struct p2p_data *p2p = eloop_ctx;
1070 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1071 running = p2p->p2p_scan_running;
1072 /* Make sure we recover from missed scan results callback */
1073 p2p->p2p_scan_running = 0;
1076 p2p_run_after_scan(p2p);
1080 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1082 p2p->num_req_dev_types = 0;
1083 os_free(p2p->req_dev_types);
1084 p2p->req_dev_types = NULL;
1088 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1090 u8 buf[SHA256_MAC_LEN];
1092 const u8 *adv_array;
1099 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1103 adv_array = (u8 *) str_buf;
1104 adv_len = os_strlen(str);
1106 for (i = 0; str[i] && i < adv_len; i++) {
1107 if (str[i] >= 'A' && str[i] <= 'Z')
1108 str_buf[i] = str[i] - 'A' + 'a';
1110 str_buf[i] = str[i];
1113 if (sha256_vector(1, &adv_array, &adv_len, buf))
1116 os_memcpy(hash, buf, P2PS_HASH_LEN);
1121 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1122 enum p2p_discovery_type type,
1123 unsigned int num_req_dev_types, const u8 *req_dev_types,
1124 const u8 *dev_id, unsigned int search_delay,
1125 u8 seek_count, const char **seek)
1129 p2p_dbg(p2p, "Starting find (type=%d)", type);
1130 os_get_reltime(&p2p->find_start);
1131 if (p2p->p2p_scan_running) {
1132 p2p_dbg(p2p, "p2p_scan is already running");
1135 p2p_free_req_dev_types(p2p);
1136 if (req_dev_types && num_req_dev_types) {
1137 p2p->req_dev_types = os_malloc(num_req_dev_types *
1139 if (p2p->req_dev_types == NULL)
1141 os_memcpy(p2p->req_dev_types, req_dev_types,
1142 num_req_dev_types * WPS_DEV_TYPE_LEN);
1143 p2p->num_req_dev_types = num_req_dev_types;
1147 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1148 p2p->find_dev_id = p2p->find_dev_id_buf;
1150 p2p->find_dev_id = NULL;
1152 if (seek_count == 0 || !seek) {
1153 /* Not an ASP search */
1155 } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1157 * An empty seek string means no hash values, but still an ASP
1160 p2p->p2ps_seek_count = 0;
1162 } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1163 u8 buf[P2PS_HASH_LEN];
1166 p2p->p2ps_seek_count = seek_count;
1167 for (i = 0; i < seek_count; i++) {
1168 if (!p2ps_gen_hash(p2p, seek[i], buf))
1171 /* If asking for wildcard, don't do others */
1172 if (os_memcmp(buf, p2p->wild_card_hash,
1173 P2PS_HASH_LEN) == 0) {
1174 p2p->p2ps_seek_count = 0;
1178 os_memcpy(&p2p->query_hash[i * P2PS_HASH_LEN], buf,
1183 p2p->p2ps_seek_count = 0;
1187 /* Special case to perform wildcard search */
1188 if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1189 p2p->p2ps_seek_count = 1;
1190 os_memcpy(&p2p->query_hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1193 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1194 p2p_clear_timeout(p2p);
1195 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1196 p2p->find_type = type;
1197 p2p_device_clear_reported(p2p);
1198 p2p_set_state(p2p, P2P_SEARCH);
1199 p2p->search_delay = search_delay;
1200 p2p->in_search_delay = 0;
1201 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1202 p2p->last_p2p_find_timeout = timeout;
1204 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1207 case P2P_FIND_START_WITH_FULL:
1208 case P2P_FIND_PROGRESSIVE:
1209 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1210 p2p->num_req_dev_types,
1211 p2p->req_dev_types, dev_id,
1214 case P2P_FIND_ONLY_SOCIAL:
1215 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1216 p2p->num_req_dev_types,
1217 p2p->req_dev_types, dev_id,
1224 if (res != 0 && p2p->p2p_scan_running) {
1225 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1226 /* wait for the previous p2p_scan to complete */
1227 res = 0; /* do not report failure */
1228 } else if (res != 0) {
1229 p2p_dbg(p2p, "Failed to start p2p_scan");
1230 p2p_set_state(p2p, P2P_IDLE);
1231 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1238 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1240 p2p_dbg(p2p, "Stopping find");
1241 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1242 p2p_clear_timeout(p2p);
1243 if (p2p->state == P2P_SEARCH)
1244 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1246 p2p->p2ps_seek_count = 0;
1248 p2p_set_state(p2p, P2P_IDLE);
1249 p2p_free_req_dev_types(p2p);
1250 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1251 if (p2p->go_neg_peer)
1252 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1253 p2p->go_neg_peer = NULL;
1254 p2p->sd_peer = NULL;
1255 p2p->invite_peer = NULL;
1256 p2p_stop_listen_for_freq(p2p, freq);
1260 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1262 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1263 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1266 if (p2p->in_listen) {
1268 p2p_clear_timeout(p2p);
1270 if (p2p->drv_in_listen) {
1272 * The driver may not deliver callback to p2p_listen_end()
1273 * when the operation gets canceled, so clear the internal
1274 * variable that is tracking driver state.
1276 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1277 p2p->drv_in_listen = 0;
1279 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1283 void p2p_stop_listen(struct p2p_data *p2p)
1285 if (p2p->state != P2P_LISTEN_ONLY) {
1286 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1290 p2p_stop_listen_for_freq(p2p, 0);
1291 p2p_set_state(p2p, P2P_IDLE);
1295 void p2p_stop_find(struct p2p_data *p2p)
1297 p2p->pending_listen_freq = 0;
1298 p2p_stop_find_for_freq(p2p, 0);
1302 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1303 unsigned int force_freq,
1304 unsigned int pref_freq, int go)
1306 u8 op_class, op_channel;
1307 unsigned int freq = force_freq ? force_freq : pref_freq;
1309 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1310 force_freq, pref_freq, go);
1311 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1312 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1316 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1317 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1319 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1320 freq, op_class, op_channel);
1324 p2p->op_reg_class = op_class;
1325 p2p->op_channel = op_channel;
1328 p2p->channels.reg_classes = 1;
1329 p2p->channels.reg_class[0].channels = 1;
1330 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1331 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1333 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1334 sizeof(struct p2p_channels));
1341 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1343 u8 op_class, op_channel;
1344 const int op_classes_5ghz[] = { 124, 115, 0 };
1345 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1346 const int op_classes_vht[] = { 128, 0 };
1348 p2p_dbg(p2p, "Prepare channel best");
1350 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1351 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1352 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1354 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1355 p2p->op_reg_class = op_class;
1356 p2p->op_channel = op_channel;
1357 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1358 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1359 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1361 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1362 p2p->op_reg_class = op_class;
1363 p2p->op_channel = op_channel;
1364 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1365 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1366 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1367 &op_channel) == 0) {
1368 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1369 p2p->op_reg_class = op_class;
1370 p2p->op_channel = op_channel;
1371 } else if (p2p->cfg->num_pref_chan > 0 &&
1372 p2p_channels_includes(&p2p->cfg->channels,
1373 p2p->cfg->pref_chan[0].op_class,
1374 p2p->cfg->pref_chan[0].chan)) {
1375 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1376 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1377 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1378 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1379 &p2p->op_reg_class, &p2p->op_channel) ==
1381 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1382 p2p->op_reg_class, p2p->op_channel);
1383 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1384 &p2p->op_reg_class, &p2p->op_channel) ==
1386 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1387 p2p->op_reg_class, p2p->op_channel);
1388 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1389 &p2p->op_reg_class, &p2p->op_channel) ==
1391 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1392 p2p->op_reg_class, p2p->op_channel);
1393 } else if (p2p_channels_includes(&p2p->cfg->channels,
1394 p2p->cfg->op_reg_class,
1395 p2p->cfg->op_channel)) {
1396 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1397 p2p->op_reg_class = p2p->cfg->op_reg_class;
1398 p2p->op_channel = p2p->cfg->op_channel;
1399 } else if (p2p_channel_random_social(&p2p->cfg->channels,
1401 &p2p->op_channel) == 0) {
1402 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1403 p2p->op_reg_class, p2p->op_channel);
1405 /* Select any random available channel from the first available
1406 * operating class */
1407 p2p_channel_select(&p2p->cfg->channels, NULL,
1410 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1411 p2p->op_channel, p2p->op_reg_class);
1414 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1415 sizeof(struct p2p_channels));
1420 * p2p_prepare_channel - Select operating channel for GO Negotiation
1421 * @p2p: P2P module context from p2p_init()
1422 * @dev: Selected peer device
1423 * @force_freq: Forced frequency in MHz or 0 if not forced
1424 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1425 * @go: Whether the local end will be forced to be GO
1426 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1428 * This function is used to do initial operating channel selection for GO
1429 * Negotiation prior to having received peer information. The selected channel
1430 * may be further optimized in p2p_reselect_channel() once the peer information
1433 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1434 unsigned int force_freq, unsigned int pref_freq, int go)
1436 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1437 force_freq, pref_freq, go);
1438 if (force_freq || pref_freq) {
1439 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1443 p2p_prepare_channel_best(p2p);
1445 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1447 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1448 else if (!force_freq)
1449 p2p_channels_union_inplace(&p2p->channels,
1450 &p2p->cfg->cli_channels);
1451 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1453 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1454 p2p->op_reg_class, p2p->op_channel,
1455 force_freq ? " (forced)" : "");
1458 dev->flags |= P2P_DEV_FORCE_FREQ;
1460 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1466 static void p2p_set_dev_persistent(struct p2p_device *dev,
1467 int persistent_group)
1469 switch (persistent_group) {
1471 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1472 P2P_DEV_PREFER_PERSISTENT_RECONN);
1475 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1476 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1479 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1480 P2P_DEV_PREFER_PERSISTENT_RECONN;
1486 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1487 enum p2p_wps_method wps_method,
1488 int go_intent, const u8 *own_interface_addr,
1489 unsigned int force_freq, int persistent_group,
1490 const u8 *force_ssid, size_t force_ssid_len,
1491 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1493 struct p2p_device *dev;
1495 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1496 " GO Intent=%d Intended Interface Address=" MACSTR
1497 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1499 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1500 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1502 dev = p2p_get_device(p2p, peer_addr);
1503 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1504 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1505 MAC2STR(peer_addr));
1509 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1510 go_intent == 15) < 0)
1513 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1514 if (!(dev->info.dev_capab &
1515 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1516 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1517 " that is in a group and is not discoverable",
1518 MAC2STR(peer_addr));
1521 if (dev->oper_freq <= 0) {
1522 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1523 " with incomplete information",
1524 MAC2STR(peer_addr));
1529 * First, try to connect directly. If the peer does not
1530 * acknowledge frames, assume it is sleeping and use device
1531 * discoverability via the GO at that point.
1537 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1538 force_ssid, force_ssid_len);
1539 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1540 p2p->ssid_len = force_ssid_len;
1544 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1545 dev->flags &= ~P2P_DEV_USER_REJECTED;
1546 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1547 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1548 if (pd_before_go_neg)
1549 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1551 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1553 * Assign dialog token and tie breaker here to use the same
1554 * values in each retry within the same GO Negotiation exchange.
1556 dev->dialog_token++;
1557 if (dev->dialog_token == 0)
1558 dev->dialog_token = 1;
1559 dev->tie_breaker = p2p->next_tie_breaker;
1560 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1562 dev->connect_reqs = 0;
1563 dev->go_neg_req_sent = 0;
1564 dev->go_state = UNKNOWN_GO;
1565 p2p_set_dev_persistent(dev, persistent_group);
1566 p2p->go_intent = go_intent;
1567 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1569 if (p2p->state != P2P_IDLE)
1572 if (p2p->after_scan_tx) {
1574 * We need to drop the pending frame to avoid issues with the
1575 * new GO Negotiation, e.g., when the pending frame was from a
1576 * previous attempt at starting a GO Negotiation.
1578 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1579 os_free(p2p->after_scan_tx);
1580 p2p->after_scan_tx = NULL;
1583 dev->wps_method = wps_method;
1584 dev->oob_pw_id = oob_pw_id;
1585 dev->status = P2P_SC_SUCCESS;
1587 if (p2p->p2p_scan_running) {
1588 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1589 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1590 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1593 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1595 return p2p_connect_send(p2p, dev);
1599 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1600 enum p2p_wps_method wps_method,
1601 int go_intent, const u8 *own_interface_addr,
1602 unsigned int force_freq, int persistent_group,
1603 const u8 *force_ssid, size_t force_ssid_len,
1604 unsigned int pref_freq, u16 oob_pw_id)
1606 struct p2p_device *dev;
1608 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1609 " GO Intent=%d Intended Interface Address=" MACSTR
1610 " wps_method=%d persistent_group=%d oob_pw_id=%u",
1611 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1612 wps_method, persistent_group, oob_pw_id);
1614 dev = p2p_get_device(p2p, peer_addr);
1616 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1617 MAC2STR(peer_addr));
1621 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1627 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1628 force_ssid, force_ssid_len);
1629 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1630 p2p->ssid_len = force_ssid_len;
1634 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1635 dev->flags &= ~P2P_DEV_USER_REJECTED;
1636 dev->go_neg_req_sent = 0;
1637 dev->go_state = UNKNOWN_GO;
1638 p2p_set_dev_persistent(dev, persistent_group);
1639 p2p->go_intent = go_intent;
1640 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1642 dev->wps_method = wps_method;
1643 dev->oob_pw_id = oob_pw_id;
1644 dev->status = P2P_SC_SUCCESS;
1650 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1651 struct p2p_device *dev, struct p2p_message *msg)
1653 os_get_reltime(&dev->last_seen);
1655 p2p_copy_wps_info(p2p, dev, 0, msg);
1657 if (msg->listen_channel) {
1659 freq = p2p_channel_to_freq(msg->listen_channel[3],
1660 msg->listen_channel[4]);
1662 p2p_dbg(p2p, "Unknown peer Listen channel: "
1663 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1664 msg->listen_channel[0],
1665 msg->listen_channel[1],
1666 msg->listen_channel[2],
1667 msg->listen_channel[3],
1668 msg->listen_channel[4]);
1670 p2p_dbg(p2p, "Update peer " MACSTR
1671 " Listen channel: %u -> %u MHz",
1672 MAC2STR(dev->info.p2p_device_addr),
1673 dev->listen_freq, freq);
1674 dev->listen_freq = freq;
1678 if (msg->wfd_subelems) {
1679 wpabuf_free(dev->info.wfd_subelems);
1680 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1683 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1684 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1685 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1687 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1688 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1690 MAC2STR(dev->info.p2p_device_addr),
1691 dev->info.dev_capab, dev->info.group_capab,
1692 dev->info.device_name, dev->listen_freq);
1695 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1697 if (dev->flags & P2P_DEV_USER_REJECTED) {
1698 p2p_dbg(p2p, "Do not report rejected device");
1702 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1703 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1704 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1708 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1710 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1711 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1712 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1713 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1714 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1718 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1720 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1721 p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1726 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1728 struct p2p_go_neg_results res;
1729 int go = peer->go_state == LOCAL_GO;
1730 struct p2p_channels intersection;
1732 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1733 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1735 os_memset(&res, 0, sizeof(res));
1737 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1738 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1739 res.wps_method = peer->wps_method;
1740 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1741 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1742 res.persistent_group = 2;
1744 res.persistent_group = 1;
1748 /* Setup AP mode for WPS provisioning */
1749 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1751 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1752 res.ssid_len = p2p->ssid_len;
1753 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1755 res.freq = peer->oper_freq;
1756 if (p2p->ssid_len) {
1757 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1758 res.ssid_len = p2p->ssid_len;
1762 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1763 p2p_channels_dump(p2p, "peer channels", &peer->channels);
1764 p2p_channels_intersect(&p2p->channels, &peer->channels,
1767 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1768 p2p_channels_dump(p2p, "intersection after no-GO removal",
1772 p2p_channels_to_freqs(&intersection, res.freq_list,
1775 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1777 p2p_clear_timeout(p2p);
1779 peer->go_neg_req_sent = 0;
1780 peer->wps_method = WPS_NOT_READY;
1781 peer->oob_pw_id = 0;
1782 wpabuf_free(peer->go_neg_conf);
1783 peer->go_neg_conf = NULL;
1785 p2p_set_state(p2p, P2P_PROVISIONING);
1786 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1790 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1791 const u8 *data, size_t len, int rx_freq)
1793 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1794 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1800 case P2P_GO_NEG_REQ:
1801 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1803 case P2P_GO_NEG_RESP:
1804 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1806 case P2P_GO_NEG_CONF:
1807 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1809 case P2P_INVITATION_REQ:
1810 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1813 case P2P_INVITATION_RESP:
1814 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1816 case P2P_PROV_DISC_REQ:
1817 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1819 case P2P_PROV_DISC_RESP:
1820 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1822 case P2P_DEV_DISC_REQ:
1823 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1825 case P2P_DEV_DISC_RESP:
1826 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1829 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1836 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1837 const u8 *sa, const u8 *bssid, const u8 *data,
1838 size_t len, int freq)
1844 case WLAN_PA_VENDOR_SPECIFIC:
1849 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1855 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1857 case WLAN_PA_GAS_INITIAL_REQ:
1858 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1860 case WLAN_PA_GAS_INITIAL_RESP:
1861 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1863 case WLAN_PA_GAS_COMEBACK_REQ:
1864 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1866 case WLAN_PA_GAS_COMEBACK_RESP:
1867 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1873 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1874 const u8 *bssid, u8 category,
1875 const u8 *data, size_t len, int freq)
1877 if (category == WLAN_ACTION_PUBLIC) {
1878 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1882 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1888 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1893 /* P2P action frame */
1894 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1895 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1901 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1904 case P2P_PRESENCE_REQ:
1905 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1907 case P2P_PRESENCE_RESP:
1908 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1910 case P2P_GO_DISC_REQ:
1911 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1914 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1920 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1922 struct p2p_data *p2p = eloop_ctx;
1923 if (p2p->go_neg_peer == NULL)
1925 if (p2p->pending_listen_freq) {
1926 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1927 p2p->pending_listen_freq = 0;
1929 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1930 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1932 * Set new timeout to make sure a previously set one does not expire
1933 * too quickly while waiting for the GO Negotiation to complete.
1935 p2p_set_timeout(p2p, 0, 500000);
1936 p2p_connect_send(p2p, p2p->go_neg_peer);
1940 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1942 struct p2p_data *p2p = eloop_ctx;
1943 if (p2p->invite_peer == NULL)
1945 if (p2p->pending_listen_freq) {
1946 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1947 p2p->pending_listen_freq = 0;
1949 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1950 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1951 p2p->invite_dev_pw_id);
1955 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1956 const u8 *ie, size_t ie_len)
1958 struct p2p_message msg;
1959 struct p2p_device *dev;
1961 os_memset(&msg, 0, sizeof(msg));
1962 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1964 p2p_parse_free(&msg);
1965 return; /* not a P2P probe */
1968 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1969 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1971 /* The Probe Request is not part of P2P Device Discovery. It is
1972 * not known whether the source address of the frame is the P2P
1973 * Device Address or P2P Interface Address. Do not add a new
1974 * peer entry based on this frames.
1976 p2p_parse_free(&msg);
1980 dev = p2p_get_device(p2p, addr);
1982 if (dev->country[0] == 0 && msg.listen_channel)
1983 os_memcpy(dev->country, msg.listen_channel, 3);
1984 os_get_reltime(&dev->last_seen);
1985 p2p_parse_free(&msg);
1986 return; /* already known */
1989 dev = p2p_create_device(p2p, addr);
1991 p2p_parse_free(&msg);
1995 os_get_reltime(&dev->last_seen);
1996 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1998 if (msg.listen_channel) {
1999 os_memcpy(dev->country, msg.listen_channel, 3);
2000 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2001 msg.listen_channel[4]);
2004 p2p_copy_wps_info(p2p, dev, 1, &msg);
2006 if (msg.wfd_subelems) {
2007 wpabuf_free(dev->info.wfd_subelems);
2008 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2011 p2p_parse_free(&msg);
2013 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2014 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2015 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2016 dev->info.group_capab, dev->info.device_name,
2021 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2023 struct p2p_message *msg)
2025 struct p2p_device *dev;
2027 dev = p2p_get_device(p2p, addr);
2029 os_get_reltime(&dev->last_seen);
2030 return dev; /* already known */
2033 dev = p2p_create_device(p2p, addr);
2037 p2p_add_dev_info(p2p, addr, dev, msg);
2043 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2045 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2047 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2048 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2049 WPA_GET_BE16(&req_dev_type[6]) == 0)
2050 return 1; /* Category match with wildcard OUI/sub-category */
2055 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2056 size_t num_req_dev_type)
2059 for (i = 0; i < num_req_dev_type; i++) {
2060 if (dev_type_match(dev_type, req_dev_type[i]))
2068 * p2p_match_dev_type - Match local device type with requested type
2069 * @p2p: P2P module context from p2p_init()
2070 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2071 * Returns: 1 on match, 0 on mismatch
2073 * This function can be used to match the Requested Device Type attribute in
2074 * WPS IE with the local device types for deciding whether to reply to a Probe
2077 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2079 struct wps_parse_attr attr;
2082 if (wps_parse_msg(wps, &attr))
2083 return 1; /* assume no Requested Device Type attributes */
2085 if (attr.num_req_dev_type == 0)
2086 return 1; /* no Requested Device Type attributes -> match */
2088 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2089 attr.num_req_dev_type))
2090 return 1; /* Own Primary Device Type matches */
2092 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2093 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2095 attr.num_req_dev_type))
2096 return 1; /* Own Secondary Device Type matches */
2099 /* No matching device type found */
2104 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2111 #ifdef CONFIG_WIFI_DISPLAY
2112 if (p2p->wfd_ie_probe_resp)
2113 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2114 #endif /* CONFIG_WIFI_DISPLAY */
2116 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2117 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2119 buf = wpabuf_alloc(1000 + extra);
2123 if (p2p->go_neg_peer) {
2124 /* Advertise immediate availability of WPS credential */
2125 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2128 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2129 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2134 #ifdef CONFIG_WIFI_DISPLAY
2135 if (p2p->wfd_ie_probe_resp)
2136 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2137 #endif /* CONFIG_WIFI_DISPLAY */
2139 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2141 p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2144 len = p2p_buf_add_ie_hdr(buf);
2145 p2p_buf_add_capability(buf, p2p->dev_capab &
2146 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2147 if (p2p->ext_listen_interval)
2148 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2149 p2p->ext_listen_interval);
2150 p2p_buf_add_device_info(buf, p2p, NULL);
2151 p2p_buf_update_ie_hdr(buf, len);
2157 static enum p2p_probe_req_status
2158 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2159 const u8 *bssid, const u8 *ie, size_t ie_len)
2161 struct ieee802_11_elems elems;
2163 struct ieee80211_mgmt *resp;
2164 struct p2p_message msg;
2167 if (!p2p->in_listen || !p2p->drv_in_listen) {
2168 /* not in Listen state - ignore Probe Request */
2169 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2170 p2p->in_listen, p2p->drv_in_listen);
2171 return P2P_PREQ_NOT_LISTEN;
2174 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2176 /* Ignore invalid Probe Request frames */
2177 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2178 return P2P_PREQ_MALFORMED;
2181 if (elems.p2p == NULL) {
2182 /* not a P2P probe - ignore it */
2183 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2184 return P2P_PREQ_NOT_P2P;
2187 if (dst && !is_broadcast_ether_addr(dst) &&
2188 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2189 /* Not sent to the broadcast address or our P2P Device Address
2191 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2193 return P2P_PREQ_NOT_PROCESSED;
2196 if (bssid && !is_broadcast_ether_addr(bssid)) {
2197 /* Not sent to the Wildcard BSSID */
2198 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2200 return P2P_PREQ_NOT_PROCESSED;
2203 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2204 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2206 /* not using P2P Wildcard SSID - ignore */
2207 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2208 return P2P_PREQ_NOT_PROCESSED;
2211 if (supp_rates_11b_only(&elems)) {
2212 /* Indicates support for 11b rates only */
2213 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2214 return P2P_PREQ_NOT_P2P;
2217 os_memset(&msg, 0, sizeof(msg));
2218 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2219 /* Could not parse P2P attributes */
2220 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2221 return P2P_PREQ_NOT_P2P;
2224 if (msg.device_id &&
2225 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2226 /* Device ID did not match */
2227 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2228 MAC2STR(msg.device_id));
2229 p2p_parse_free(&msg);
2230 return P2P_PREQ_NOT_PROCESSED;
2233 /* Check Requested Device Type match */
2234 if (msg.wps_attributes &&
2235 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2236 /* No match with Requested Device Type */
2237 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2238 p2p_parse_free(&msg);
2239 return P2P_PREQ_NOT_PROCESSED;
2241 p2p_parse_free(&msg);
2243 if (!p2p->cfg->send_probe_resp) {
2244 /* Response generated elsewhere */
2245 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2246 return P2P_PREQ_NOT_PROCESSED;
2249 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2252 * We do not really have a specific BSS that this frame is advertising,
2253 * so build a frame that has some information in valid format. This is
2254 * really only used for discovery purposes, not to learn exact BSS
2257 ies = p2p_build_probe_resp_ies(p2p);
2259 return P2P_PREQ_NOT_PROCESSED;
2261 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2264 return P2P_PREQ_NOT_PROCESSED;
2268 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2270 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2271 (WLAN_FC_STYPE_PROBE_RESP << 4));
2272 os_memcpy(resp->da, addr, ETH_ALEN);
2273 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2274 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2275 resp->u.probe_resp.beacon_int = host_to_le16(100);
2276 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2277 resp->u.probe_resp.capab_info =
2278 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2279 WLAN_CAPABILITY_PRIVACY |
2280 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2282 wpabuf_put_u8(buf, WLAN_EID_SSID);
2283 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2284 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2286 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2287 wpabuf_put_u8(buf, 8);
2288 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2289 wpabuf_put_u8(buf, 90 / 5);
2290 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2291 wpabuf_put_u8(buf, 180 / 5);
2292 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2293 wpabuf_put_u8(buf, 360 / 5);
2294 wpabuf_put_u8(buf, 480 / 5);
2295 wpabuf_put_u8(buf, 540 / 5);
2297 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2298 wpabuf_put_u8(buf, 1);
2299 wpabuf_put_u8(buf, p2p->cfg->channel);
2301 wpabuf_put_buf(buf, ies);
2304 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2308 return P2P_PREQ_NOT_PROCESSED;
2312 enum p2p_probe_req_status
2313 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2314 const u8 *bssid, const u8 *ie, size_t ie_len)
2316 enum p2p_probe_req_status res;
2318 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2320 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2322 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2324 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2326 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2327 /* Received a Probe Request from GO Negotiation peer */
2328 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2329 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2330 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2331 return P2P_PREQ_PROCESSED;
2334 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2336 (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2337 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2339 /* Received a Probe Request from Invite peer */
2340 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2341 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2342 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2343 return P2P_PREQ_PROCESSED;
2350 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2351 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2360 return 0; /* WLAN AP is not a P2P manager */
2363 * (Re)Association Request - P2P IE
2364 * P2P Capability attribute (shall be present)
2365 * P2P Interface attribute (present if concurrent device and
2366 * P2P Management is enabled)
2368 tmp = wpabuf_alloc(200);
2372 lpos = p2p_buf_add_ie_hdr(tmp);
2374 if (p2p->num_groups > 0) {
2375 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2376 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2377 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2379 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2381 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2382 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2383 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2384 p2p_buf_add_p2p_interface(tmp, p2p);
2385 p2p_buf_update_ie_hdr(tmp, lpos);
2387 tmplen = wpabuf_len(tmp);
2391 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2400 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2401 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2405 struct p2p_device *peer;
2411 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2413 #ifdef CONFIG_WIFI_DISPLAY
2414 if (p2p->wfd_ie_assoc_req)
2415 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2416 #endif /* CONFIG_WIFI_DISPLAY */
2418 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2419 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2422 * (Re)Association Request - P2P IE
2423 * P2P Capability attribute (shall be present)
2424 * Extended Listen Timing (may be present)
2425 * P2P Device Info attribute (shall be present)
2427 tmp = wpabuf_alloc(200 + extra);
2431 #ifdef CONFIG_WIFI_DISPLAY
2432 if (p2p->wfd_ie_assoc_req)
2433 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2434 #endif /* CONFIG_WIFI_DISPLAY */
2436 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2438 p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2440 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2442 lpos = p2p_buf_add_ie_hdr(tmp);
2443 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2444 if (p2p->ext_listen_interval)
2445 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2446 p2p->ext_listen_interval);
2447 p2p_buf_add_device_info(tmp, p2p, peer);
2448 p2p_buf_update_ie_hdr(tmp, lpos);
2450 tmplen = wpabuf_len(tmp);
2454 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2463 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2465 struct wpabuf *p2p_ie;
2468 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2472 ret = p2p_attr_text(p2p_ie, buf, end);
2473 wpabuf_free(p2p_ie);
2478 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2480 struct p2p_message msg;
2482 os_memset(&msg, 0, sizeof(msg));
2483 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2486 if (msg.p2p_device_addr) {
2487 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2489 } else if (msg.device_id) {
2490 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2497 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2499 struct wpabuf *p2p_ie;
2502 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2503 P2P_IE_VENDOR_TYPE);
2506 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2507 wpabuf_free(p2p_ie);
2512 static void p2p_clear_go_neg(struct p2p_data *p2p)
2514 p2p->go_neg_peer = NULL;
2515 p2p_clear_timeout(p2p);
2516 p2p_set_state(p2p, P2P_IDLE);
2520 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2522 if (p2p->go_neg_peer == NULL) {
2523 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2524 return; /* No pending Group Formation */
2527 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2529 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2530 MACSTR " (GO Negotiation peer " MACSTR ")",
2532 MAC2STR(p2p->go_neg_peer->intended_addr));
2533 return; /* Ignore unexpected peer address */
2536 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2539 p2p_clear_go_neg(p2p);
2543 void p2p_group_formation_failed(struct p2p_data *p2p)
2545 if (p2p->go_neg_peer == NULL) {
2546 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2547 return; /* No pending Group Formation */
2550 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2551 MAC2STR(p2p->go_neg_peer->intended_addr));
2553 p2p_clear_go_neg(p2p);
2557 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2559 struct p2p_data *p2p;
2561 if (cfg->max_peers < 1 ||
2562 cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2565 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2568 p2p->cfg = (struct p2p_config *) (p2p + 1);
2569 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2571 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2572 if (cfg->manufacturer)
2573 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2574 if (cfg->model_name)
2575 p2p->cfg->model_name = os_strdup(cfg->model_name);
2576 if (cfg->model_number)
2577 p2p->cfg->model_number = os_strdup(cfg->model_number);
2578 if (cfg->serial_number)
2579 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2580 if (cfg->pref_chan) {
2581 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2582 sizeof(struct p2p_channel));
2583 if (p2p->cfg->pref_chan) {
2584 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2585 cfg->num_pref_chan *
2586 sizeof(struct p2p_channel));
2588 p2p->cfg->num_pref_chan = 0;
2591 p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2593 p2p->min_disc_int = 1;
2594 p2p->max_disc_int = 3;
2595 p2p->max_disc_tu = -1;
2597 if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2598 p2p->next_tie_breaker = 0;
2599 p2p->next_tie_breaker &= 0x01;
2600 if (cfg->sd_request)
2601 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2602 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2603 if (cfg->concurrent_operations)
2604 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2605 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2607 dl_list_init(&p2p->devices);
2609 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2610 p2p_expiration_timeout, p2p, NULL);
2612 p2p->go_timeout = 100;
2613 p2p->client_timeout = 20;
2614 p2p->num_p2p_sd_queries = 0;
2616 p2p_dbg(p2p, "initialized");
2617 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2618 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2624 void p2p_deinit(struct p2p_data *p2p)
2626 #ifdef CONFIG_WIFI_DISPLAY
2627 wpabuf_free(p2p->wfd_ie_beacon);
2628 wpabuf_free(p2p->wfd_ie_probe_req);
2629 wpabuf_free(p2p->wfd_ie_probe_resp);
2630 wpabuf_free(p2p->wfd_ie_assoc_req);
2631 wpabuf_free(p2p->wfd_ie_invitation);
2632 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2633 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2634 wpabuf_free(p2p->wfd_ie_go_neg);
2635 wpabuf_free(p2p->wfd_dev_info);
2636 wpabuf_free(p2p->wfd_assoc_bssid);
2637 wpabuf_free(p2p->wfd_coupled_sink_info);
2638 #endif /* CONFIG_WIFI_DISPLAY */
2640 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2641 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2642 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2643 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2644 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2646 p2p_free_req_dev_types(p2p);
2647 os_free(p2p->cfg->dev_name);
2648 os_free(p2p->cfg->manufacturer);
2649 os_free(p2p->cfg->model_name);
2650 os_free(p2p->cfg->model_number);
2651 os_free(p2p->cfg->serial_number);
2652 os_free(p2p->cfg->pref_chan);
2653 os_free(p2p->groups);
2654 wpabuf_free(p2p->sd_resp);
2655 os_free(p2p->after_scan_tx);
2656 p2p_remove_wps_vendor_extensions(p2p);
2657 os_free(p2p->no_go_freq.range);
2662 void p2p_flush(struct p2p_data *p2p)
2664 struct p2p_device *dev, *prev;
2666 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2668 dl_list_del(&dev->list);
2669 p2p_device_free(p2p, dev);
2671 p2p_free_sd_queries(p2p);
2672 os_free(p2p->after_scan_tx);
2673 p2p->after_scan_tx = NULL;
2677 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2679 struct p2p_device *dev;
2681 dev = p2p_get_device(p2p, addr);
2685 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2687 if (p2p->go_neg_peer == dev) {
2688 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2689 p2p->go_neg_peer = NULL;
2692 dev->wps_method = WPS_NOT_READY;
2694 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2695 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2697 /* Check if after_scan_tx is for this peer. If so free it */
2698 if (p2p->after_scan_tx &&
2699 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2700 os_free(p2p->after_scan_tx);
2701 p2p->after_scan_tx = NULL;
2708 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2710 os_free(p2p->cfg->dev_name);
2712 p2p->cfg->dev_name = os_strdup(dev_name);
2713 if (p2p->cfg->dev_name == NULL)
2716 p2p->cfg->dev_name = NULL;
2721 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2723 os_free(p2p->cfg->manufacturer);
2724 p2p->cfg->manufacturer = NULL;
2726 p2p->cfg->manufacturer = os_strdup(manufacturer);
2727 if (p2p->cfg->manufacturer == NULL)
2735 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2737 os_free(p2p->cfg->model_name);
2738 p2p->cfg->model_name = NULL;
2740 p2p->cfg->model_name = os_strdup(model_name);
2741 if (p2p->cfg->model_name == NULL)
2749 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2751 os_free(p2p->cfg->model_number);
2752 p2p->cfg->model_number = NULL;
2754 p2p->cfg->model_number = os_strdup(model_number);
2755 if (p2p->cfg->model_number == NULL)
2763 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2765 os_free(p2p->cfg->serial_number);
2766 p2p->cfg->serial_number = NULL;
2767 if (serial_number) {
2768 p2p->cfg->serial_number = os_strdup(serial_number);
2769 if (p2p->cfg->serial_number == NULL)
2777 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2779 p2p->cfg->config_methods = config_methods;
2783 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2785 os_memcpy(p2p->cfg->uuid, uuid, 16);
2789 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2791 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2796 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2797 size_t num_dev_types)
2799 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2800 num_dev_types = P2P_SEC_DEVICE_TYPES;
2801 p2p->cfg->num_sec_dev_types = num_dev_types;
2802 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2807 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2811 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2812 wpabuf_free(p2p->wps_vendor_ext[i]);
2813 p2p->wps_vendor_ext[i] = NULL;
2818 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2819 const struct wpabuf *vendor_ext)
2823 if (vendor_ext == NULL)
2826 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2827 if (p2p->wps_vendor_ext[i] == NULL)
2830 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2833 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2834 if (p2p->wps_vendor_ext[i] == NULL)
2841 int p2p_set_country(struct p2p_data *p2p, const char *country)
2843 os_memcpy(p2p->cfg->country, country, 3);
2848 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
2850 if (dev->sd_pending_bcast_queries == 0) {
2851 /* Initialize with total number of registered broadcast
2853 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
2856 if (p2p_start_sd(p2p, dev) == 0)
2859 if (dev->req_config_methods &&
2860 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2861 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2862 MACSTR " (config methods 0x%x)",
2863 MAC2STR(dev->info.p2p_device_addr),
2864 dev->req_config_methods);
2865 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2873 void p2p_continue_find(struct p2p_data *p2p)
2875 struct p2p_device *dev;
2878 p2p_set_state(p2p, P2P_SEARCH);
2880 /* Continue from the device following the last iteration */
2882 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2883 if (dev == p2p->last_p2p_find_oper) {
2889 if (p2p_pre_find_operation(p2p, dev) > 0) {
2890 p2p->last_p2p_find_oper = dev;
2896 * Wrap around to the beginning of the list and continue until the last
2899 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2900 if (p2p_pre_find_operation(p2p, dev) > 0) {
2901 p2p->last_p2p_find_oper = dev;
2904 if (dev == p2p->last_p2p_find_oper)
2908 p2p_listen_in_find(p2p, 1);
2912 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2914 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2916 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2920 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2921 p2p->sd_peer = NULL;
2922 p2p_continue_find(p2p);
2926 if (p2p->sd_peer == NULL) {
2927 p2p_dbg(p2p, "No SD peer entry known");
2928 p2p_continue_find(p2p);
2932 if (p2p->sd_query && p2p->sd_query->for_all_peers) {
2933 /* Update the pending broadcast SD query count for this device
2935 p2p->sd_peer->sd_pending_bcast_queries--;
2938 * If there are no pending broadcast queries for this device,
2939 * mark it as done (-1).
2941 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
2942 p2p->sd_peer->sd_pending_bcast_queries = -1;
2945 /* Wait for response from the peer */
2946 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2947 p2p_set_timeout(p2p, 0, 200000);
2952 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2953 * @p2p: P2P module context from p2p_init()
2955 static void p2p_retry_pd(struct p2p_data *p2p)
2957 struct p2p_device *dev;
2959 if (p2p->state != P2P_IDLE)
2963 * Retry the prov disc req attempt only for the peer that the user had
2967 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2968 if (os_memcmp(p2p->pending_pd_devaddr,
2969 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2971 if (!dev->req_config_methods)
2974 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2975 MACSTR " (config methods 0x%x)",
2976 MAC2STR(dev->info.p2p_device_addr),
2977 dev->req_config_methods);
2978 p2p_send_prov_disc_req(p2p, dev,
2979 dev->flags & P2P_DEV_PD_FOR_JOIN,
2980 p2p->pd_force_freq);
2986 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2988 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2992 * Postpone resetting the pending action state till after we actually
2993 * time out. This allows us to take some action like notifying any
2994 * interested parties about no response to the request.
2996 * When the timer (below) goes off we check in IDLE, SEARCH, or
2997 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2998 * requests in, if this was still pending and then raise notification.
3002 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3004 if (p2p->user_initiated_pd &&
3005 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3007 /* Retry request from timeout to avoid busy loops */
3008 p2p->pending_action_state = P2P_PENDING_PD;
3009 p2p_set_timeout(p2p, 0, 50000);
3010 } else if (p2p->state != P2P_IDLE)
3011 p2p_continue_find(p2p);
3012 else if (p2p->user_initiated_pd) {
3013 p2p->pending_action_state = P2P_PENDING_PD;
3014 p2p_set_timeout(p2p, 0, 300000);
3020 * This postponing, of resetting pending_action_state, needs to be
3021 * done only for user initiated PD requests and not internal ones.
3023 if (p2p->user_initiated_pd)
3024 p2p->pending_action_state = P2P_PENDING_PD;
3026 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3028 /* Wait for response from the peer */
3029 if (p2p->state == P2P_SEARCH)
3030 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3031 p2p_set_timeout(p2p, 0, 200000);
3035 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3036 struct os_reltime *rx_time, int level, const u8 *ies,
3039 if (os_reltime_before(rx_time, &p2p->find_start)) {
3041 * The driver may have cached (e.g., in cfg80211 BSS table) the
3042 * scan results for relatively long time. To avoid reporting
3043 * stale information, update P2P peers only based on results
3044 * that have based on frames received after the last p2p_find
3045 * operation was started.
3047 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3048 " (rx_time=%u.%06u)",
3049 MAC2STR(bssid), (unsigned int) rx_time->sec,
3050 (unsigned int) rx_time->usec);
3054 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3060 void p2p_scan_res_handled(struct p2p_data *p2p)
3062 if (!p2p->p2p_scan_running) {
3063 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3065 p2p->p2p_scan_running = 0;
3066 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3068 if (p2p_run_after_scan(p2p))
3070 if (p2p->state == P2P_SEARCH)
3071 p2p_continue_find(p2p);
3075 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3079 #ifdef CONFIG_WIFI_DISPLAY
3080 if (p2p->wfd_ie_probe_req)
3081 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3082 #endif /* CONFIG_WIFI_DISPLAY */
3084 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3086 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3088 len = p2p_buf_add_ie_hdr(ies);
3089 p2p_buf_add_capability(ies, p2p->dev_capab &
3090 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
3092 p2p_buf_add_device_id(ies, dev_id);
3093 if (p2p->cfg->reg_class && p2p->cfg->channel)
3094 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3095 p2p->cfg->reg_class,
3097 if (p2p->ext_listen_interval)
3098 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3099 p2p->ext_listen_interval);
3100 /* TODO: p2p_buf_add_operating_channel() if GO */
3101 p2p_buf_update_ie_hdr(ies, len);
3105 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3109 #ifdef CONFIG_WIFI_DISPLAY
3110 if (p2p && p2p->wfd_ie_probe_req)
3111 len += wpabuf_len(p2p->wfd_ie_probe_req);
3112 #endif /* CONFIG_WIFI_DISPLAY */
3114 if (p2p && p2p->vendor_elem &&
3115 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3116 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3122 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3124 return p2p_attr_text(p2p_ie, buf, end);
3128 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3130 struct p2p_device *dev = p2p->go_neg_peer;
3133 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3136 p2p_dbg(p2p, "No pending GO Negotiation");
3141 if (dev->flags & P2P_DEV_USER_REJECTED) {
3142 p2p_set_state(p2p, P2P_IDLE);
3145 } else if (dev->go_neg_req_sent) {
3146 /* Cancel the increment from p2p_connect_send() on failure */
3147 dev->go_neg_req_sent--;
3151 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3152 !is_zero_ether_addr(dev->member_in_go_dev)) {
3153 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3154 MAC2STR(dev->info.p2p_device_addr));
3155 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3156 p2p_send_dev_disc_req(p2p, dev);
3161 * Use P2P find, if needed, to find the other device from its listen
3164 p2p_set_state(p2p, P2P_CONNECT);
3165 timeout = success ? 500000 : 100000;
3166 if (!success && p2p->go_neg_peer &&
3167 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3170 * Peer is expected to wait our response and we will skip the
3171 * listen phase. Add some randomness to the wait time here to
3172 * make it less likely to hit cases where we could end up in
3173 * sync with peer not listening.
3175 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3177 timeout += r % 100000;
3179 p2p_set_timeout(p2p, 0, timeout);
3183 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3185 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3187 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3188 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3191 p2p_set_state(p2p, P2P_CONNECT);
3192 p2p_set_timeout(p2p, 0, 500000);
3196 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3199 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3200 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3201 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3202 } else if (success) {
3203 struct p2p_device *dev;
3204 dev = p2p_get_device(p2p, addr);
3206 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3207 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3212 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3213 enum p2p_send_action_result result)
3215 struct p2p_device *dev;
3217 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3218 if (result == P2P_SEND_ACTION_FAILED) {
3219 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3220 p2p_go_neg_failed(p2p, -1);
3224 dev = p2p->go_neg_peer;
3226 if (result == P2P_SEND_ACTION_NO_ACK) {
3228 * Retry GO Negotiation Confirmation
3229 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3230 * ACK for confirmation.
3232 if (dev && dev->go_neg_conf &&
3233 dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3234 p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3235 dev->go_neg_conf_sent);
3236 p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3237 if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3238 dev->info.p2p_device_addr,
3240 dev->info.p2p_device_addr,
3241 wpabuf_head(dev->go_neg_conf),
3242 wpabuf_len(dev->go_neg_conf), 0) >=
3244 dev->go_neg_conf_sent++;
3247 p2p_dbg(p2p, "Failed to re-send Action frame");
3250 * Continue with the assumption that the first attempt
3251 * went through and just the ACK frame was lost.
3256 * It looks like the TX status for GO Negotiation Confirm is
3257 * often showing failure even when the peer has actually
3258 * received the frame. Since the peer may change channels
3259 * immediately after having received the frame, we may not see
3260 * an Ack for retries, so just dropping a single frame may
3261 * trigger this. To allow the group formation to succeed if the
3262 * peer did indeed receive the frame, continue regardless of
3265 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3268 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3273 p2p_go_complete(p2p, dev);
3277 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3278 const u8 *src, const u8 *bssid,
3279 enum p2p_send_action_result result)
3281 enum p2p_pending_action_state state;
3284 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3285 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3286 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3287 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3288 success = result == P2P_SEND_ACTION_SUCCESS;
3289 state = p2p->pending_action_state;
3290 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3292 case P2P_NO_PENDING_ACTION:
3293 if (p2p->send_action_in_progress) {
3294 p2p->send_action_in_progress = 0;
3295 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3297 if (p2p->after_scan_tx_in_progress) {
3298 p2p->after_scan_tx_in_progress = 0;
3299 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3300 p2p_run_after_scan(p2p))
3302 if (p2p->state == P2P_SEARCH) {
3303 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3304 p2p_continue_find(p2p);
3308 case P2P_PENDING_GO_NEG_REQUEST:
3309 p2p_go_neg_req_cb(p2p, success);
3311 case P2P_PENDING_GO_NEG_RESPONSE:
3312 p2p_go_neg_resp_cb(p2p, success);
3314 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3315 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3317 case P2P_PENDING_GO_NEG_CONFIRM:
3318 p2p_go_neg_conf_cb(p2p, result);
3320 case P2P_PENDING_SD:
3321 p2p_sd_cb(p2p, success);
3323 case P2P_PENDING_PD:
3324 p2p_prov_disc_cb(p2p, success);
3326 case P2P_PENDING_INVITATION_REQUEST:
3327 p2p_invitation_req_cb(p2p, success);
3329 case P2P_PENDING_INVITATION_RESPONSE:
3330 p2p_invitation_resp_cb(p2p, success);
3332 case P2P_PENDING_DEV_DISC_REQUEST:
3333 p2p_dev_disc_req_cb(p2p, success);
3335 case P2P_PENDING_DEV_DISC_RESPONSE:
3336 p2p_dev_disc_resp_cb(p2p, success);
3338 case P2P_PENDING_GO_DISC_REQ:
3339 p2p_go_disc_req_cb(p2p, success);
3343 p2p->after_scan_tx_in_progress = 0;
3347 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3348 unsigned int duration)
3350 if (freq == p2p->pending_client_disc_freq) {
3351 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3352 p2p->pending_client_disc_freq = 0;
3356 if (freq != p2p->pending_listen_freq) {
3357 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3358 freq, duration, p2p->pending_listen_freq);
3362 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3363 p2p->pending_listen_sec, p2p->pending_listen_usec,
3364 p2p->pending_listen_freq);
3366 p2p->drv_in_listen = freq;
3367 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3369 * Add 20 msec extra wait to avoid race condition with driver
3370 * remain-on-channel end event, i.e., give driver more time to
3371 * complete the operation before our timeout expires.
3373 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3374 p2p->pending_listen_usec + 20000);
3377 p2p->pending_listen_freq = 0;
3381 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3383 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3384 p2p->drv_in_listen = 0;
3386 return 0; /* Internal timeout will trigger the next step */
3388 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3389 if (p2p->go_neg_peer->connect_reqs >= 120) {
3390 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3391 p2p_go_neg_failed(p2p, -1);
3395 p2p_set_state(p2p, P2P_CONNECT);
3396 p2p_connect_send(p2p, p2p->go_neg_peer);
3398 } else if (p2p->state == P2P_SEARCH) {
3399 if (p2p->p2p_scan_running) {
3401 * Search is already in progress. This can happen if
3402 * an Action frame RX is reported immediately after
3403 * the end of a remain-on-channel operation and the
3404 * response frame to that is sent using an offchannel
3405 * operation while in p2p_find. Avoid an attempt to
3406 * restart a scan here.
3408 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3411 if (p2p->pending_listen_freq) {
3413 * Better wait a bit if the driver is unable to start
3414 * offchannel operation for some reason. p2p_search()
3415 * will be started from internal timeout.
3417 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3418 p2p_set_timeout(p2p, 0, 100000);
3421 if (p2p->search_delay) {
3422 p2p_dbg(p2p, "Delay search operation by %u ms",
3424 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3425 (p2p->search_delay % 1000) * 1000);
3436 static void p2p_timeout_connect(struct p2p_data *p2p)
3438 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3439 if (p2p->go_neg_peer &&
3440 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3441 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3442 p2p_go_neg_failed(p2p, -1);
3445 if (p2p->go_neg_peer &&
3446 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3447 p2p->go_neg_peer->connect_reqs < 120) {
3448 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3449 p2p_connect_send(p2p, p2p->go_neg_peer);
3452 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3453 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3454 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3455 p2p_set_timeout(p2p, 0, 30000);
3458 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3459 p2p_listen_in_find(p2p, 0);
3463 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3465 if (p2p->go_neg_peer) {
3466 if (p2p->drv_in_listen) {
3467 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3471 if (p2p->go_neg_peer->connect_reqs >= 120) {
3472 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3473 p2p_go_neg_failed(p2p, -1);
3477 p2p_set_state(p2p, P2P_CONNECT);
3478 p2p_connect_send(p2p, p2p->go_neg_peer);
3480 p2p_set_state(p2p, P2P_IDLE);
3484 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3486 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3488 if (p2p->cfg->is_concurrent_session_active &&
3489 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3490 p2p_set_timeout(p2p, 0, 500000);
3492 p2p_set_timeout(p2p, 0, 200000);
3496 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3498 struct p2p_device *dev = p2p->go_neg_peer;
3501 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3505 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3506 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3507 p2p_listen_in_find(p2p, 0);
3511 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3513 p2p_dbg(p2p, "Service Discovery Query timeout");
3515 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3516 p2p->sd_peer = NULL;
3518 p2p_continue_find(p2p);
3522 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3524 p2p_dbg(p2p, "Provision Discovery Request timeout");
3525 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3526 p2p_continue_find(p2p);
3530 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3532 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3535 * For user initiated PD requests that we have not gotten any responses
3536 * for while in IDLE state, we retry them a couple of times before
3539 if (!p2p->user_initiated_pd)
3542 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3544 if (p2p->pd_retries) {
3548 struct p2p_device *dev;
3551 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3552 if (os_memcmp(p2p->pending_pd_devaddr,
3553 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3555 if (dev->req_config_methods &&
3556 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3560 if (p2p->cfg->prov_disc_fail)
3561 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3562 p2p->pending_pd_devaddr,
3564 P2P_PROV_DISC_TIMEOUT_JOIN :
3565 P2P_PROV_DISC_TIMEOUT);
3566 p2p_reset_pending_pd(p2p);
3571 static void p2p_timeout_invite(struct p2p_data *p2p)
3573 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3574 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3575 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3577 * Better remain on operating channel instead of listen channel
3578 * when running a group.
3580 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3581 p2p_set_timeout(p2p, 0, 100000);
3584 p2p_listen_in_find(p2p, 0);
3588 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3590 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3591 p2p_set_state(p2p, P2P_INVITE);
3592 p2p_invite_send(p2p, p2p->invite_peer,
3593 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3595 if (p2p->invite_peer) {
3596 p2p_dbg(p2p, "Invitation Request retry limit reached");
3597 if (p2p->cfg->invitation_result)
3598 p2p->cfg->invitation_result(
3599 p2p->cfg->cb_ctx, -1, NULL, NULL,
3600 p2p->invite_peer->info.p2p_device_addr,
3603 p2p_set_state(p2p, P2P_IDLE);
3608 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3610 struct p2p_data *p2p = eloop_ctx;
3612 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3615 if (p2p->drv_in_listen) {
3616 p2p_dbg(p2p, "Driver is still in listen state - stop it");
3617 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
3620 switch (p2p->state) {
3622 /* Check if we timed out waiting for PD req */
3623 if (p2p->pending_action_state == P2P_PENDING_PD)
3624 p2p_timeout_prov_disc_req(p2p);
3627 /* Check if we timed out waiting for PD req */
3628 if (p2p->pending_action_state == P2P_PENDING_PD)
3629 p2p_timeout_prov_disc_req(p2p);
3630 if (p2p->search_delay && !p2p->in_search_delay) {
3631 p2p_dbg(p2p, "Delay search operation by %u ms",
3633 p2p->in_search_delay = 1;
3634 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3635 (p2p->search_delay % 1000) * 1000);
3638 p2p->in_search_delay = 0;
3642 p2p_timeout_connect(p2p);
3644 case P2P_CONNECT_LISTEN:
3645 p2p_timeout_connect_listen(p2p);
3649 case P2P_LISTEN_ONLY:
3650 /* Check if we timed out waiting for PD req */
3651 if (p2p->pending_action_state == P2P_PENDING_PD)
3652 p2p_timeout_prov_disc_req(p2p);
3654 if (p2p->ext_listen_only) {
3655 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3656 p2p->ext_listen_only = 0;
3657 p2p_set_state(p2p, P2P_IDLE);
3660 case P2P_WAIT_PEER_CONNECT:
3661 p2p_timeout_wait_peer_connect(p2p);
3663 case P2P_WAIT_PEER_IDLE:
3664 p2p_timeout_wait_peer_idle(p2p);
3666 case P2P_SD_DURING_FIND:
3667 p2p_timeout_sd_during_find(p2p);
3669 case P2P_PROVISIONING:
3671 case P2P_PD_DURING_FIND:
3672 p2p_timeout_prov_disc_during_find(p2p);
3675 p2p_timeout_invite(p2p);
3677 case P2P_INVITE_LISTEN:
3678 p2p_timeout_invite_listen(p2p);
3684 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3686 struct p2p_device *dev;
3688 dev = p2p_get_device(p2p, peer_addr);
3689 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3690 MACSTR, MAC2STR(peer_addr));
3692 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3695 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3696 dev->flags |= P2P_DEV_USER_REJECTED;
3701 const char * p2p_wps_method_text(enum p2p_wps_method method)
3706 case WPS_PIN_DISPLAY:
3708 case WPS_PIN_KEYPAD:
3720 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3735 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3736 const u8 *addr, int next)
3738 struct p2p_device *dev;
3741 dev = p2p_get_device(p2p, addr);
3743 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3746 dev = dl_list_first(&dev->list, struct p2p_device, list);
3747 if (&dev->list == &p2p->devices)
3758 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3759 char *buf, size_t buflen)
3761 struct p2p_device *dev;
3764 struct os_reltime now;
3769 dev = (struct p2p_device *) (((u8 *) info) -
3770 offsetof(struct p2p_device, info));
3775 os_get_reltime(&now);
3776 res = os_snprintf(pos, end - pos,
3780 "interface_addr=" MACSTR "\n"
3781 "member_in_go_dev=" MACSTR "\n"
3782 "member_in_go_iface=" MACSTR "\n"
3783 "go_neg_req_sent=%d\n"
3786 "intended_addr=" MACSTR "\n"
3789 "req_config_methods=0x%x\n"
3790 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3792 "invitation_reqs=%u\n",
3793 (int) (now.sec - dev->last_seen.sec),
3795 p2p_wps_method_text(dev->wps_method),
3796 MAC2STR(dev->interface_addr),
3797 MAC2STR(dev->member_in_go_dev),
3798 MAC2STR(dev->member_in_go_iface),
3799 dev->go_neg_req_sent,
3800 p2p_go_state_text(dev->go_state),
3802 MAC2STR(dev->intended_addr),
3803 dev->country[0] ? dev->country[0] : '_',
3804 dev->country[1] ? dev->country[1] : '_',
3806 dev->req_config_methods,
3807 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3808 "[PROBE_REQ_ONLY]" : "",
3809 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3810 dev->flags & P2P_DEV_NOT_YET_READY ?
3811 "[NOT_YET_READY]" : "",
3812 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3813 "[PD_PEER_DISPLAY]" : "",
3814 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3815 "[PD_PEER_KEYPAD]" : "",
3816 dev->flags & P2P_DEV_USER_REJECTED ?
3817 "[USER_REJECTED]" : "",
3818 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3819 "[PEER_WAITING_RESPONSE]" : "",
3820 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3821 "[PREFER_PERSISTENT_GROUP]" : "",
3822 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3823 "[WAIT_GO_NEG_RESPONSE]" : "",
3824 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3825 "[WAIT_GO_NEG_CONFIRM]" : "",
3826 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3827 "[GROUP_CLIENT_ONLY]" : "",
3828 dev->flags & P2P_DEV_FORCE_FREQ ?
3829 "[FORCE_FREQ]" : "",
3830 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3831 "[PD_FOR_JOIN]" : "",
3833 dev->invitation_reqs);
3834 if (os_snprintf_error(end - pos, res))
3838 if (dev->ext_listen_period) {
3839 res = os_snprintf(pos, end - pos,
3840 "ext_listen_period=%u\n"
3841 "ext_listen_interval=%u\n",
3842 dev->ext_listen_period,
3843 dev->ext_listen_interval);
3844 if (os_snprintf_error(end - pos, res))
3849 if (dev->oper_ssid_len) {
3850 res = os_snprintf(pos, end - pos,
3852 wpa_ssid_txt(dev->oper_ssid,
3853 dev->oper_ssid_len));
3854 if (os_snprintf_error(end - pos, res))
3859 #ifdef CONFIG_WIFI_DISPLAY
3860 if (dev->info.wfd_subelems) {
3861 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3862 if (os_snprintf_error(end - pos, res))
3866 pos += wpa_snprintf_hex(pos, end - pos,
3867 wpabuf_head(dev->info.wfd_subelems),
3868 wpabuf_len(dev->info.wfd_subelems));
3870 res = os_snprintf(pos, end - pos, "\n");
3871 if (os_snprintf_error(end - pos, res))
3875 #endif /* CONFIG_WIFI_DISPLAY */
3881 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3883 return p2p_get_device(p2p, addr) != NULL;
3887 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3890 p2p_dbg(p2p, "Client discoverability enabled");
3891 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3893 p2p_dbg(p2p, "Client discoverability disabled");
3894 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3899 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3900 u32 duration2, u32 interval2)
3903 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3906 req = wpabuf_alloc(100);
3910 if (duration1 || interval1) {
3911 os_memset(&desc1, 0, sizeof(desc1));
3912 desc1.count_type = 1;
3913 desc1.duration = duration1;
3914 desc1.interval = interval1;
3917 if (duration2 || interval2) {
3918 os_memset(&desc2, 0, sizeof(desc2));
3919 desc2.count_type = 2;
3920 desc2.duration = duration2;
3921 desc2.interval = interval2;
3926 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3927 len = p2p_buf_add_ie_hdr(req);
3928 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3929 p2p_buf_update_ie_hdr(req, len);
3935 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3936 const u8 *own_interface_addr, unsigned int freq,
3937 u32 duration1, u32 interval1, u32 duration2,
3942 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3943 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3945 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3946 freq, duration1, interval1, duration2, interval2);
3948 req = p2p_build_presence_req(duration1, interval1, duration2,
3953 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3954 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3956 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3957 p2p_dbg(p2p, "Failed to send Action frame");
3965 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3966 size_t noa_len, u8 dialog_token)
3968 struct wpabuf *resp;
3971 resp = wpabuf_alloc(100 + noa_len);
3975 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3976 len = p2p_buf_add_ie_hdr(resp);
3977 p2p_buf_add_status(resp, status);
3979 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3980 wpabuf_put_le16(resp, noa_len);
3981 wpabuf_put_data(resp, noa, noa_len);
3983 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3984 p2p_buf_update_ie_hdr(resp, len);
3990 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3991 const u8 *sa, const u8 *data, size_t len,
3994 struct p2p_message msg;
3996 struct wpabuf *resp;
3998 struct p2p_group *group = NULL;
4003 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4005 for (g = 0; g < p2p->num_groups; g++) {
4006 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4008 group = p2p->groups[g];
4012 if (group == NULL) {
4013 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4014 MACSTR, MAC2STR(da));
4018 if (p2p_parse(data, len, &msg) < 0) {
4019 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4020 status = P2P_SC_FAIL_INVALID_PARAMS;
4025 if (msg.noa == NULL) {
4026 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4027 status = P2P_SC_FAIL_INVALID_PARAMS;
4031 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4034 if (p2p->cfg->get_noa)
4035 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4039 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4040 noa_len > 0 ? noa_len : 0,
4043 p2p_parse_free(&msg);
4047 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4048 if (p2p_send_action(p2p, rx_freq, sa, da, da,
4049 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4050 p2p_dbg(p2p, "Failed to send Action frame");
4056 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4057 const u8 *sa, const u8 *data, size_t len)
4059 struct p2p_message msg;
4061 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4063 if (p2p_parse(data, len, &msg) < 0) {
4064 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4068 if (msg.status == NULL || msg.noa == NULL) {
4069 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4070 p2p_parse_free(&msg);
4074 if (p2p->cfg->presence_resp) {
4075 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4076 msg.noa, msg.noa_len);
4080 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4082 p2p_parse_free(&msg);
4086 p2p_dbg(p2p, "P2P Presence Request was accepted");
4087 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4088 msg.noa, msg.noa_len);
4089 /* TODO: process NoA */
4090 p2p_parse_free(&msg);
4094 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4096 struct p2p_data *p2p = eloop_ctx;
4098 if (p2p->ext_listen_interval) {
4099 /* Schedule next extended listen timeout */
4100 eloop_register_timeout(p2p->ext_listen_interval_sec,
4101 p2p->ext_listen_interval_usec,
4102 p2p_ext_listen_timeout, p2p, NULL);
4105 if ((p2p->cfg->is_p2p_in_progress &&
4106 p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4107 (p2p->pending_action_state == P2P_PENDING_PD &&
4108 p2p->pd_retries > 0)) {
4109 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4110 p2p_state_txt(p2p->state));
4114 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4116 * This should not really happen, but it looks like the Listen
4117 * command may fail is something else (e.g., a scan) was
4118 * running at an inconvenient time. As a workaround, allow new
4119 * Extended Listen operation to be started.
4121 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4122 p2p->ext_listen_only = 0;
4123 p2p_set_state(p2p, P2P_IDLE);
4126 if (p2p->state != P2P_IDLE) {
4127 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4131 p2p_dbg(p2p, "Extended Listen timeout");
4132 p2p->ext_listen_only = 1;
4133 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4134 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4135 p2p->ext_listen_only = 0;
4140 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4141 unsigned int interval)
4143 if (period > 65535 || interval > 65535 || period > interval ||
4144 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4145 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4150 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4152 if (interval == 0) {
4153 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4154 p2p->ext_listen_period = 0;
4155 p2p->ext_listen_interval = 0;
4159 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4161 p2p->ext_listen_period = period;
4162 p2p->ext_listen_interval = interval;
4163 p2p->ext_listen_interval_sec = interval / 1000;
4164 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4166 eloop_register_timeout(p2p->ext_listen_interval_sec,
4167 p2p->ext_listen_interval_usec,
4168 p2p_ext_listen_timeout, p2p, NULL);
4174 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4175 const u8 *ie, size_t ie_len)
4177 struct p2p_message msg;
4179 if (bssid == NULL || ie == NULL)
4182 os_memset(&msg, 0, sizeof(msg));
4183 if (p2p_parse_ies(ie, ie_len, &msg))
4185 if (msg.minor_reason_code == NULL) {
4186 p2p_parse_free(&msg);
4190 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4191 " reason_code=%u minor_reason_code=%u",
4192 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4194 p2p_parse_free(&msg);
4198 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4199 const u8 *ie, size_t ie_len)
4201 struct p2p_message msg;
4203 if (bssid == NULL || ie == NULL)
4206 os_memset(&msg, 0, sizeof(msg));
4207 if (p2p_parse_ies(ie, ie_len, &msg))
4209 if (msg.minor_reason_code == NULL) {
4210 p2p_parse_free(&msg);
4214 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4215 " reason_code=%u minor_reason_code=%u",
4216 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4218 p2p_parse_free(&msg);
4222 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4225 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4226 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4228 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4229 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4234 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4237 return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4241 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4244 if (p2p_channel_to_freq(reg_class, channel) < 0)
4247 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4248 reg_class, channel);
4251 * Listen channel was set in configuration or set by control interface;
4252 * cannot override it.
4254 if (p2p->cfg->channel_forced && forced == 0)
4257 if (p2p->state == P2P_IDLE) {
4258 p2p->cfg->reg_class = reg_class;
4259 p2p->cfg->channel = channel;
4260 p2p->cfg->channel_forced = forced;
4262 p2p_dbg(p2p, "Defer setting listen channel");
4263 p2p->pending_reg_class = reg_class;
4264 p2p->pending_channel = channel;
4265 p2p->pending_channel_forced = forced;
4272 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4274 return p2p->cfg->channel;
4278 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4280 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4281 if (postfix == NULL) {
4282 p2p->cfg->ssid_postfix_len = 0;
4285 if (len > sizeof(p2p->cfg->ssid_postfix))
4287 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4288 p2p->cfg->ssid_postfix_len = len;
4293 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4296 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4299 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4300 op_reg_class, op_channel);
4301 p2p->cfg->op_reg_class = op_reg_class;
4302 p2p->cfg->op_channel = op_channel;
4303 p2p->cfg->cfg_op_channel = cfg_op_channel;
4308 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4309 const struct p2p_channel *pref_chan)
4311 struct p2p_channel *n;
4314 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4317 os_memcpy(n, pref_chan,
4318 num_pref_chan * sizeof(struct p2p_channel));
4322 os_free(p2p->cfg->pref_chan);
4323 p2p->cfg->pref_chan = n;
4324 p2p->cfg->num_pref_chan = num_pref_chan;
4330 int p2p_set_no_go_freq(struct p2p_data *p2p,
4331 const struct wpa_freq_range_list *list)
4333 struct wpa_freq_range *tmp;
4335 if (list == NULL || list->num == 0) {
4336 os_free(p2p->no_go_freq.range);
4337 p2p->no_go_freq.range = NULL;
4338 p2p->no_go_freq.num = 0;
4342 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4345 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4346 os_free(p2p->no_go_freq.range);
4347 p2p->no_go_freq.range = tmp;
4348 p2p->no_go_freq.num = list->num;
4349 p2p_dbg(p2p, "Updated no GO chan list");
4355 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4358 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4359 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4361 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4366 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4369 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4372 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4377 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4379 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4380 if (is_zero_ether_addr(p2p->peer_filter))
4381 p2p_dbg(p2p, "Disable peer filter");
4383 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4384 MAC2STR(p2p->peer_filter));
4388 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4390 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4391 if (p2p->cross_connect == enabled)
4393 p2p->cross_connect = enabled;
4394 /* TODO: may need to tear down any action group where we are GO(?) */
4398 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4400 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4403 if (dev->oper_freq <= 0)
4405 return dev->oper_freq;
4409 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4411 p2p_dbg(p2p, "Intra BSS distribution %s",
4412 enabled ? "enabled" : "disabled");
4413 p2p->cfg->p2p_intra_bss = enabled;
4417 void p2p_update_channel_list(struct p2p_data *p2p,
4418 const struct p2p_channels *chan,
4419 const struct p2p_channels *cli_chan)
4421 p2p_dbg(p2p, "Update channel list");
4422 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4423 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4424 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4425 sizeof(struct p2p_channels));
4426 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4430 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4431 const u8 *src, const u8 *bssid, const u8 *buf,
4432 size_t len, unsigned int wait_time)
4434 if (p2p->p2p_scan_running) {
4435 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4436 if (p2p->after_scan_tx) {
4437 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4438 os_free(p2p->after_scan_tx);
4440 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4442 if (p2p->after_scan_tx == NULL)
4444 p2p->after_scan_tx->freq = freq;
4445 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4446 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4447 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4448 p2p->after_scan_tx->len = len;
4449 p2p->after_scan_tx->wait_time = wait_time;
4450 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4454 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4455 buf, len, wait_time);
4459 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4462 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4463 freq_24, freq_5, freq_overall);
4464 p2p->best_freq_24 = freq_24;
4465 p2p->best_freq_5 = freq_5;
4466 p2p->best_freq_overall = freq_overall;
4470 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4472 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4473 p2p->own_freq_preference = freq;
4477 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4479 if (p2p == NULL || p2p->go_neg_peer == NULL)
4481 return p2p->go_neg_peer->info.p2p_device_addr;
4485 const struct p2p_peer_info *
4486 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4488 struct p2p_device *dev;
4491 dev = p2p_get_device(p2p, addr);
4496 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4502 dev = dl_list_first(&dev->list,
4505 if (!dev || &dev->list == &p2p->devices)
4507 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4510 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4513 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4514 dev = dl_list_first(&dev->list,
4517 if (!dev || &dev->list == &p2p->devices)
4526 int p2p_in_progress(struct p2p_data *p2p)
4530 if (p2p->state == P2P_SEARCH)
4532 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4536 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4540 p2p->go_timeout = go_timeout;
4541 p2p->client_timeout = client_timeout;
4546 #ifdef CONFIG_WIFI_DISPLAY
4548 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4551 struct p2p_group *group;
4553 for (g = 0; g < p2p->num_groups; g++) {
4554 group = p2p->groups[g];
4555 p2p_group_force_beacon_update_ies(group);
4560 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4562 wpabuf_free(p2p->wfd_ie_beacon);
4563 p2p->wfd_ie_beacon = ie;
4564 p2p_update_wfd_ie_groups(p2p);
4569 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4571 wpabuf_free(p2p->wfd_ie_probe_req);
4572 p2p->wfd_ie_probe_req = ie;
4577 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4579 wpabuf_free(p2p->wfd_ie_probe_resp);
4580 p2p->wfd_ie_probe_resp = ie;
4581 p2p_update_wfd_ie_groups(p2p);
4586 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4588 wpabuf_free(p2p->wfd_ie_assoc_req);
4589 p2p->wfd_ie_assoc_req = ie;
4594 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4596 wpabuf_free(p2p->wfd_ie_invitation);
4597 p2p->wfd_ie_invitation = ie;
4602 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4604 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4605 p2p->wfd_ie_prov_disc_req = ie;
4610 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4612 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4613 p2p->wfd_ie_prov_disc_resp = ie;
4618 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4620 wpabuf_free(p2p->wfd_ie_go_neg);
4621 p2p->wfd_ie_go_neg = ie;
4626 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4628 wpabuf_free(p2p->wfd_dev_info);
4630 p2p->wfd_dev_info = wpabuf_dup(elem);
4631 if (p2p->wfd_dev_info == NULL)
4634 p2p->wfd_dev_info = NULL;
4640 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4642 wpabuf_free(p2p->wfd_assoc_bssid);
4644 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4645 if (p2p->wfd_assoc_bssid == NULL)
4648 p2p->wfd_assoc_bssid = NULL;
4654 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4655 const struct wpabuf *elem)
4657 wpabuf_free(p2p->wfd_coupled_sink_info);
4659 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4660 if (p2p->wfd_coupled_sink_info == NULL)
4663 p2p->wfd_coupled_sink_info = NULL;
4668 #endif /* CONFIG_WIFI_DISPLAY */
4671 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4674 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4677 p2p->min_disc_int = min_disc_int;
4678 p2p->max_disc_int = max_disc_int;
4679 p2p->max_disc_tu = max_disc_tu;
4680 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4681 min_disc_int, max_disc_int, max_disc_tu);
4687 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4692 if (!p2p->cfg->debug_print)
4696 vsnprintf(buf, sizeof(buf), fmt, ap);
4697 buf[sizeof(buf) - 1] = '\0';
4699 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4703 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4708 if (!p2p->cfg->debug_print)
4712 vsnprintf(buf, sizeof(buf), fmt, ap);
4713 buf[sizeof(buf) - 1] = '\0';
4715 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4719 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4724 if (!p2p->cfg->debug_print)
4728 vsnprintf(buf, sizeof(buf), fmt, ap);
4729 buf[sizeof(buf) - 1] = '\0';
4731 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4735 void p2p_loop_on_known_peers(struct p2p_data *p2p,
4736 void (*peer_callback)(struct p2p_peer_info *peer,
4740 struct p2p_device *dev, *n;
4742 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
4743 peer_callback(&dev->info, user_data);
4748 #ifdef CONFIG_WPS_NFC
4750 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4752 const u8 *go_dev_addr,
4753 const u8 *ssid, size_t ssid_len)
4756 u8 op_class, channel;
4757 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4759 buf = wpabuf_alloc(1000);
4763 op_class = p2p->cfg->reg_class;
4764 channel = p2p->cfg->channel;
4766 p2p_buf_add_capability(buf, p2p->dev_capab &
4767 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4768 p2p_buf_add_device_info(buf, p2p, NULL);
4770 if (p2p->num_groups > 0) {
4771 int freq = p2p_group_get_freq(p2p->groups[0]);
4772 role = P2P_GO_IN_A_GROUP;
4773 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
4775 "Unknown GO operating frequency %d MHz for NFC handover",
4780 } else if (client_freq > 0) {
4781 role = P2P_CLIENT_IN_A_GROUP;
4782 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
4784 "Unknown client operating frequency %d MHz for NFC handover",
4791 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4794 if (p2p->num_groups > 0) {
4795 /* Limit number of clients to avoid very long message */
4796 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4797 p2p_group_buf_add_id(p2p->groups[0], buf);
4798 } else if (client_freq > 0 &&
4799 go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
4800 ssid && ssid_len > 0) {
4802 * Add the optional P2P Group ID to indicate in which group this
4803 * device is a P2P Client.
4805 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
4812 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4814 const u8 *go_dev_addr,
4815 const u8 *ssid, size_t ssid_len)
4817 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4822 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4824 const u8 *go_dev_addr,
4825 const u8 *ssid, size_t ssid_len)
4827 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4832 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4833 struct p2p_nfc_params *params)
4835 struct p2p_message msg;
4836 struct p2p_device *dev;
4837 const u8 *p2p_dev_addr;
4839 enum p2p_role_indication role;
4841 params->next_step = NO_ACTION;
4843 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4844 params->p2p_attr, params->p2p_len, &msg)) {
4845 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4846 p2p_parse_free(&msg);
4850 if (msg.p2p_device_addr)
4851 p2p_dev_addr = msg.p2p_device_addr;
4852 else if (msg.device_id)
4853 p2p_dev_addr = msg.device_id;
4855 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4856 p2p_parse_free(&msg);
4860 if (msg.oob_dev_password) {
4861 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4862 msg.oob_dev_password_len);
4863 params->oob_dev_pw_len = msg.oob_dev_password_len;
4866 dev = p2p_create_device(p2p, p2p_dev_addr);
4868 p2p_parse_free(&msg);
4872 params->peer = &dev->info;
4874 os_get_reltime(&dev->last_seen);
4875 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4876 p2p_copy_wps_info(p2p, dev, 0, &msg);
4878 if (!msg.oob_go_neg_channel) {
4879 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4883 if (msg.oob_go_neg_channel[3] == 0 &&
4884 msg.oob_go_neg_channel[4] == 0)
4887 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4888 msg.oob_go_neg_channel[4]);
4890 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4893 role = msg.oob_go_neg_channel[5];
4895 if (role == P2P_GO_IN_A_GROUP) {
4896 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
4897 params->go_freq = freq;
4898 } else if (role == P2P_CLIENT_IN_A_GROUP) {
4899 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
4901 params->go_freq = freq;
4903 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4904 dev->oob_go_neg_freq = freq;
4906 if (!params->sel && role != P2P_GO_IN_A_GROUP) {
4907 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4910 p2p_dbg(p2p, "Own listen channel not known");
4913 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4914 dev->oob_go_neg_freq = freq;
4918 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
4919 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
4920 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
4921 params->go_ssid_len);
4924 if (dev->flags & P2P_DEV_USER_REJECTED) {
4925 p2p_dbg(p2p, "Do not report rejected device");
4926 p2p_parse_free(&msg);
4930 if (!(dev->flags & P2P_DEV_REPORTED)) {
4931 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4932 !(dev->flags & P2P_DEV_REPORTED_ONCE));
4933 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4935 p2p_parse_free(&msg);
4937 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
4938 params->next_step = BOTH_GO;
4939 else if (role == P2P_GO_IN_A_GROUP)
4940 params->next_step = JOIN_GROUP;
4941 else if (role == P2P_CLIENT_IN_A_GROUP) {
4942 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4943 params->next_step = PEER_CLIENT;
4944 } else if (p2p->num_groups > 0)
4945 params->next_step = AUTH_JOIN;
4946 else if (params->sel)
4947 params->next_step = INIT_GO_NEG;
4949 params->next_step = RESP_GO_NEG;
4955 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4957 const u8 *own_interface_addr)
4960 p2p->authorized_oob_dev_pw_id = dev_pw_id;
4961 if (dev_pw_id == 0) {
4962 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4966 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4969 p2p->go_intent = go_intent;
4970 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4973 #endif /* CONFIG_WPS_NFC */
4976 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
4978 if (len < 8 || len > 63)
4980 p2p->cfg->passphrase_len = len;
4985 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
4987 p2p->vendor_elem = vendor_elem;
4991 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
4993 struct p2p_data *p2p = eloop_ctx;
4996 "Timeout on waiting peer to become ready for GO Negotiation");
4997 p2p_go_neg_failed(p2p, -1);