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 "wps/wps_i.h"
20 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
21 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
22 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
23 const u8 *sa, const u8 *data, size_t len,
25 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
26 const u8 *sa, const u8 *data,
28 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
29 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
33 * p2p_scan recovery timeout
35 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
36 * timeout for this to avoid hitting P2P timeout unnecessarily.
38 #define P2P_SCAN_TIMEOUT 35
41 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
42 * entries will be removed
44 #ifndef P2P_PEER_EXPIRATION_AGE
45 #define P2P_PEER_EXPIRATION_AGE 60
46 #endif /* P2P_PEER_EXPIRATION_AGE */
48 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
50 static void p2p_expire_peers(struct p2p_data *p2p)
52 struct p2p_device *dev, *n;
53 struct os_reltime now;
57 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
58 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
61 if (dev == p2p->go_neg_peer) {
63 * GO Negotiation is in progress with the peer, so
64 * don't expire the peer entry until GO Negotiation
70 if (p2p->cfg->go_connected &&
71 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
72 dev->info.p2p_device_addr)) {
74 * We are connected as a client to a group in which the
75 * peer is the GO, so do not expire the peer entry.
77 os_get_reltime(&dev->last_seen);
81 for (i = 0; i < p2p->num_groups; i++) {
82 if (p2p_group_is_client_connected(
83 p2p->groups[i], dev->info.p2p_device_addr))
86 if (i < p2p->num_groups) {
88 * The peer is connected as a client in a group where
89 * we are the GO, so do not expire the peer entry.
91 os_get_reltime(&dev->last_seen);
95 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
96 MAC2STR(dev->info.p2p_device_addr));
97 dl_list_del(&dev->list);
98 p2p_device_free(p2p, dev);
103 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
105 struct p2p_data *p2p = eloop_ctx;
106 p2p_expire_peers(p2p);
107 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
108 p2p_expiration_timeout, p2p, NULL);
112 static const char * p2p_state_txt(int state)
121 case P2P_CONNECT_LISTEN:
122 return "CONNECT_LISTEN";
125 case P2P_LISTEN_ONLY:
126 return "LISTEN_ONLY";
127 case P2P_WAIT_PEER_CONNECT:
128 return "WAIT_PEER_CONNECT";
129 case P2P_WAIT_PEER_IDLE:
130 return "WAIT_PEER_IDLE";
131 case P2P_SD_DURING_FIND:
132 return "SD_DURING_FIND";
133 case P2P_PROVISIONING:
134 return "PROVISIONING";
135 case P2P_PD_DURING_FIND:
136 return "PD_DURING_FIND";
139 case P2P_INVITE_LISTEN:
140 return "INVITE_LISTEN";
147 const char * p2p_get_state_txt(struct p2p_data *p2p)
149 return p2p_state_txt(p2p->state);
153 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
155 struct p2p_device *dev = NULL;
160 dev = p2p_get_device(p2p, addr);
162 return dev->wps_prov_info;
168 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
170 struct p2p_device *dev = NULL;
175 dev = p2p_get_device(p2p, addr);
177 dev->wps_prov_info = 0;
181 void p2p_set_state(struct p2p_data *p2p, int new_state)
183 p2p_dbg(p2p, "State %s -> %s",
184 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
185 p2p->state = new_state;
189 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
191 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
192 p2p_state_txt(p2p->state), sec, usec);
193 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
194 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
198 void p2p_clear_timeout(struct p2p_data *p2p)
200 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
201 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
205 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
208 struct p2p_go_neg_results res;
209 p2p_clear_timeout(p2p);
210 p2p_set_state(p2p, P2P_IDLE);
211 if (p2p->go_neg_peer) {
212 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
213 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
214 p2p->go_neg_peer->oob_pw_id = 0;
216 p2p->go_neg_peer = NULL;
218 os_memset(&res, 0, sizeof(res));
221 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
223 os_memcpy(res.peer_interface_addr, peer->intended_addr,
226 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
230 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
236 p2p_dbg(p2p, "Starting short listen state (state=%s)",
237 p2p_state_txt(p2p->state));
239 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
241 p2p_dbg(p2p, "Unknown regulatory class/channel");
245 os_get_random((u8 *) &r, sizeof(r));
246 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
247 p2p->min_disc_int) * 100;
248 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
249 tu = p2p->max_disc_tu;
250 if (!dev_disc && tu < 100)
251 tu = 100; /* Need to wait in non-device discovery use cases */
252 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
253 tu = p2p->cfg->max_listen * 1000 / 1024;
256 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
257 p2p_set_timeout(p2p, 0, 0);
261 p2p->pending_listen_freq = freq;
262 p2p->pending_listen_sec = 0;
263 p2p->pending_listen_usec = 1024 * tu;
265 ies = p2p_build_probe_resp_ies(p2p);
269 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
271 p2p_dbg(p2p, "Failed to start listen mode");
272 p2p->pending_listen_freq = 0;
278 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
283 p2p_dbg(p2p, "Going to listen(only) state");
285 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
287 p2p_dbg(p2p, "Unknown regulatory class/channel");
291 p2p->pending_listen_freq = freq;
292 p2p->pending_listen_sec = timeout / 1000;
293 p2p->pending_listen_usec = (timeout % 1000) * 1000;
295 if (p2p->p2p_scan_running) {
296 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
297 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
300 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
301 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
305 ies = p2p_build_probe_resp_ies(p2p);
309 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
310 p2p_dbg(p2p, "Failed to start listen mode");
311 p2p->pending_listen_freq = 0;
317 p2p_set_state(p2p, P2P_LISTEN_ONLY);
323 static void p2p_device_clear_reported(struct p2p_data *p2p)
325 struct p2p_device *dev;
326 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
327 dev->flags &= ~P2P_DEV_REPORTED;
332 * p2p_get_device - Fetch a peer entry
333 * @p2p: P2P module context from p2p_init()
334 * @addr: P2P Device Address of the peer
335 * Returns: Pointer to the device entry or %NULL if not found
337 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
339 struct p2p_device *dev;
340 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
341 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
349 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
350 * @p2p: P2P module context from p2p_init()
351 * @addr: P2P Interface Address of the peer
352 * Returns: Pointer to the device entry or %NULL if not found
354 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
357 struct p2p_device *dev;
358 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
359 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
367 * p2p_create_device - Create 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 on failure
372 * If there is already an entry for the peer, it will be returned instead of
373 * creating a new one.
375 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
378 struct p2p_device *dev, *oldest = NULL;
381 dev = p2p_get_device(p2p, addr);
385 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
387 if (oldest == NULL ||
388 os_reltime_before(&dev->last_seen, &oldest->last_seen))
391 if (count + 1 > p2p->cfg->max_peers && oldest) {
392 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
393 dl_list_del(&oldest->list);
394 p2p_device_free(p2p, oldest);
397 dev = os_zalloc(sizeof(*dev));
400 dl_list_add(&p2p->devices, &dev->list);
401 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
407 static void p2p_copy_client_info(struct p2p_device *dev,
408 struct p2p_client_info *cli)
410 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
411 dev->info.device_name[cli->dev_name_len] = '\0';
412 dev->info.dev_capab = cli->dev_capab;
413 dev->info.config_methods = cli->config_methods;
414 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
415 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
416 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
417 dev->info.wps_sec_dev_type_list_len);
421 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
422 const u8 *go_interface_addr, int freq,
423 const u8 *gi, size_t gi_len)
425 struct p2p_group_info info;
427 struct p2p_device *dev;
432 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
436 * Clear old data for this group; if the devices are still in the
437 * group, the information will be restored in the loop following this.
439 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
440 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
442 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
443 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
447 for (c = 0; c < info.num_clients; c++) {
448 struct p2p_client_info *cli = &info.client[c];
449 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
451 continue; /* ignore our own entry */
452 dev = p2p_get_device(p2p, cli->p2p_device_addr);
454 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
455 P2P_DEV_PROBE_REQ_ONLY)) {
457 * Update information since we have not
458 * received this directly from the client.
460 p2p_copy_client_info(dev, cli);
463 * Need to update P2P Client Discoverability
464 * flag since it is valid only in P2P Group
467 dev->info.dev_capab &=
468 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
469 dev->info.dev_capab |=
471 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
473 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
474 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
477 dev = p2p_create_device(p2p, cli->p2p_device_addr);
480 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
481 p2p_copy_client_info(dev, cli);
482 dev->oper_freq = freq;
483 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
484 dev->info.p2p_device_addr,
486 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
489 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
491 os_get_reltime(&dev->last_seen);
492 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
493 os_memcpy(dev->member_in_go_iface, go_interface_addr,
501 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
502 int probe_req, const struct p2p_message *msg)
504 os_memcpy(dev->info.device_name, msg->device_name,
505 sizeof(dev->info.device_name));
507 if (msg->manufacturer &&
508 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
509 os_memset(dev->info.manufacturer, 0,
510 sizeof(dev->info.manufacturer));
511 os_memcpy(dev->info.manufacturer, msg->manufacturer,
512 msg->manufacturer_len);
515 if (msg->model_name &&
516 msg->model_name_len < sizeof(dev->info.model_name)) {
517 os_memset(dev->info.model_name, 0,
518 sizeof(dev->info.model_name));
519 os_memcpy(dev->info.model_name, msg->model_name,
520 msg->model_name_len);
523 if (msg->model_number &&
524 msg->model_number_len < sizeof(dev->info.model_number)) {
525 os_memset(dev->info.model_number, 0,
526 sizeof(dev->info.model_number));
527 os_memcpy(dev->info.model_number, msg->model_number,
528 msg->model_number_len);
531 if (msg->serial_number &&
532 msg->serial_number_len < sizeof(dev->info.serial_number)) {
533 os_memset(dev->info.serial_number, 0,
534 sizeof(dev->info.serial_number));
535 os_memcpy(dev->info.serial_number, msg->serial_number,
536 msg->serial_number_len);
539 if (msg->pri_dev_type)
540 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
541 sizeof(dev->info.pri_dev_type));
542 else if (msg->wps_pri_dev_type)
543 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
544 sizeof(dev->info.pri_dev_type));
546 if (msg->wps_sec_dev_type_list) {
547 os_memcpy(dev->info.wps_sec_dev_type_list,
548 msg->wps_sec_dev_type_list,
549 msg->wps_sec_dev_type_list_len);
550 dev->info.wps_sec_dev_type_list_len =
551 msg->wps_sec_dev_type_list_len;
554 if (msg->capability) {
556 * P2P Client Discoverability bit is reserved in all frames
557 * that use this function, so do not change its value here.
559 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
560 dev->info.dev_capab |= msg->capability[0] &
561 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
562 dev->info.group_capab = msg->capability[1];
565 if (msg->ext_listen_timing) {
566 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
567 dev->ext_listen_interval =
568 WPA_GET_LE16(msg->ext_listen_timing + 2);
572 u16 new_config_methods;
573 new_config_methods = msg->config_methods ?
574 msg->config_methods : msg->wps_config_methods;
575 if (new_config_methods &&
576 dev->info.config_methods != new_config_methods) {
577 p2p_dbg(p2p, "Update peer " MACSTR
578 " config_methods 0x%x -> 0x%x",
579 MAC2STR(dev->info.p2p_device_addr),
580 dev->info.config_methods,
582 dev->info.config_methods = new_config_methods;
589 * p2p_add_device - Add peer entries based on scan results or P2P frames
590 * @p2p: P2P module context from p2p_init()
591 * @addr: Source address of Beacon or Probe Response frame (may be either
592 * P2P Device Address or P2P Interface Address)
593 * @level: Signal level (signal strength of the received frame from the peer)
594 * @freq: Frequency on which the Beacon or Probe Response frame was received
595 * @rx_time: Time when the result was received
596 * @ies: IEs from the Beacon or Probe Response frame
597 * @ies_len: Length of ies buffer in octets
598 * @scan_res: Whether this was based on scan results
599 * Returns: 0 on success, -1 on failure
601 * If the scan result is for a GO, the clients in the group will also be added
602 * to the peer table. This function can also be used with some other frames
603 * like Provision Discovery Request that contains P2P Capability and P2P Device
606 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
607 struct os_reltime *rx_time, int level, const u8 *ies,
608 size_t ies_len, int scan_res)
610 struct p2p_device *dev;
611 struct p2p_message msg;
612 const u8 *p2p_dev_addr;
614 struct os_reltime time_now;
616 os_memset(&msg, 0, sizeof(msg));
617 if (p2p_parse_ies(ies, ies_len, &msg)) {
618 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
619 p2p_parse_free(&msg);
623 if (msg.p2p_device_addr)
624 p2p_dev_addr = msg.p2p_device_addr;
625 else if (msg.device_id)
626 p2p_dev_addr = msg.device_id;
628 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
629 p2p_parse_free(&msg);
633 if (!is_zero_ether_addr(p2p->peer_filter) &&
634 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
635 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
636 " due to peer filter", MAC2STR(p2p_dev_addr));
637 p2p_parse_free(&msg);
641 dev = p2p_create_device(p2p, p2p_dev_addr);
643 p2p_parse_free(&msg);
647 if (rx_time == NULL) {
648 os_get_reltime(&time_now);
653 * Update the device entry only if the new peer
654 * entry is newer than the one previously stored.
656 if (dev->last_seen.sec > 0 &&
657 os_reltime_before(rx_time, &dev->last_seen)) {
658 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
659 (unsigned int) rx_time->sec,
660 (unsigned int) rx_time->usec,
661 (unsigned int) dev->last_seen.sec,
662 (unsigned int) dev->last_seen.usec);
663 p2p_parse_free(&msg);
667 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
669 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
671 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
672 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
674 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
675 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
677 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
678 dev->oper_ssid_len = msg.ssid[1];
681 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
682 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
684 if (*msg.ds_params == 14)
687 ds_freq = 2407 + *msg.ds_params * 5;
688 if (freq != ds_freq) {
689 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
695 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
696 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
697 MACSTR " %d -> %d MHz (DS param %d)",
698 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
699 freq, msg.ds_params ? *msg.ds_params : -1);
702 dev->listen_freq = freq;
704 dev->oper_freq = freq;
706 dev->info.level = level;
708 p2p_copy_wps_info(p2p, dev, 0, &msg);
710 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
711 wpabuf_free(dev->info.wps_vendor_ext[i]);
712 dev->info.wps_vendor_ext[i] = NULL;
715 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
716 if (msg.wps_vendor_ext[i] == NULL)
718 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
719 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
720 if (dev->info.wps_vendor_ext[i] == NULL)
724 if (msg.wfd_subelems) {
725 wpabuf_free(dev->info.wfd_subelems);
726 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
730 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
731 msg.group_info, msg.group_info_len);
734 p2p_parse_free(&msg);
736 if (p2p_pending_sd_req(p2p, dev))
737 dev->flags |= P2P_DEV_SD_SCHEDULE;
739 if (dev->flags & P2P_DEV_REPORTED)
742 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
743 freq, (unsigned int) rx_time->sec,
744 (unsigned int) rx_time->usec);
745 if (dev->flags & P2P_DEV_USER_REJECTED) {
746 p2p_dbg(p2p, "Do not report rejected device");
750 if (dev->info.config_methods == 0 &&
751 (freq == 2412 || freq == 2437 || freq == 2462)) {
753 * If we have only seen a Beacon frame from a GO, we do not yet
754 * know what WPS config methods it supports. Since some
755 * applications use config_methods value from P2P-DEVICE-FOUND
756 * events, postpone reporting this peer until we've fully
757 * discovered its capabilities.
759 * At least for now, do this only if the peer was detected on
760 * one of the social channels since that peer can be easily be
761 * found again and there are no limitations of having to use
762 * passive scan on this channels, so this can be done through
763 * Probe Response frame that includes the config_methods
766 p2p_dbg(p2p, "Do not report peer " MACSTR
767 " with unknown config methods", MAC2STR(addr));
771 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
772 !(dev->flags & P2P_DEV_REPORTED_ONCE));
773 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
779 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
783 if (p2p->go_neg_peer == dev) {
785 * If GO Negotiation is in progress, report that it has failed.
787 p2p_go_neg_failed(p2p, dev, -1);
788 p2p->go_neg_peer = NULL;
790 if (p2p->invite_peer == dev)
791 p2p->invite_peer = NULL;
792 if (p2p->sd_peer == dev)
794 if (p2p->pending_client_disc_go == dev)
795 p2p->pending_client_disc_go = NULL;
797 /* dev_lost() device, but only if it was previously dev_found() */
798 if (dev->flags & P2P_DEV_REPORTED_ONCE)
799 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
800 dev->info.p2p_device_addr);
802 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
803 wpabuf_free(dev->info.wps_vendor_ext[i]);
804 dev->info.wps_vendor_ext[i] = NULL;
807 wpabuf_free(dev->info.wfd_subelems);
813 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
815 struct p2p_channels *c;
816 struct p2p_reg_class *cla;
823 c = &p2p->cfg->channels;
824 for (cl = 0; cl < c->reg_classes; cl++) {
825 cla = &c->reg_class[cl];
826 if (cla->reg_class != p2p->last_prog_scan_class)
828 for (ch = 0; ch < cla->channels; ch++) {
829 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
839 /* Start from beginning */
840 reg_class = c->reg_class[0].reg_class;
841 channel = c->reg_class[0].channel[0];
843 /* Pick the next channel */
845 if (ch == cla->channels) {
847 if (cl == c->reg_classes)
851 reg_class = c->reg_class[cl].reg_class;
852 channel = c->reg_class[cl].channel[ch];
855 freq = p2p_channel_to_freq(reg_class, channel);
856 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
857 reg_class, channel, freq);
858 p2p->last_prog_scan_class = reg_class;
859 p2p->last_prog_scan_chan = channel;
861 if (freq == 2412 || freq == 2437 || freq == 2462)
862 return 0; /* No need to add social channels */
867 static void p2p_search(struct p2p_data *p2p)
870 enum p2p_scan_type type;
871 u16 pw_id = DEV_PW_DEFAULT;
874 if (p2p->drv_in_listen) {
875 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
878 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
880 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
881 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
882 type = P2P_SCAN_SOCIAL_PLUS_ONE;
883 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
885 type = P2P_SCAN_SOCIAL;
886 p2p_dbg(p2p, "Starting search");
889 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
890 p2p->num_req_dev_types, p2p->req_dev_types,
891 p2p->find_dev_id, pw_id);
893 p2p_dbg(p2p, "Scan request failed");
894 p2p_continue_find(p2p);
896 p2p_dbg(p2p, "Running p2p_scan");
897 p2p->p2p_scan_running = 1;
898 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
899 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
905 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
907 struct p2p_data *p2p = eloop_ctx;
908 p2p_dbg(p2p, "Find timeout -> stop");
913 static int p2p_run_after_scan(struct p2p_data *p2p)
915 struct p2p_device *dev;
916 enum p2p_after_scan op;
918 if (p2p->after_scan_tx) {
919 p2p->after_scan_tx_in_progress = 1;
920 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
921 p2p->cfg->send_action(p2p->cfg->cb_ctx,
922 p2p->after_scan_tx->freq,
923 p2p->after_scan_tx->dst,
924 p2p->after_scan_tx->src,
925 p2p->after_scan_tx->bssid,
926 (u8 *) (p2p->after_scan_tx + 1),
927 p2p->after_scan_tx->len,
928 p2p->after_scan_tx->wait_time);
929 os_free(p2p->after_scan_tx);
930 p2p->after_scan_tx = NULL;
934 op = p2p->start_after_scan;
935 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
937 case P2P_AFTER_SCAN_NOTHING:
939 case P2P_AFTER_SCAN_LISTEN:
940 p2p_dbg(p2p, "Start previously requested Listen state");
941 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
942 p2p->pending_listen_usec / 1000);
944 case P2P_AFTER_SCAN_CONNECT:
945 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
946 MAC2STR(p2p->after_scan_peer));
947 dev = p2p_get_device(p2p, p2p->after_scan_peer);
949 p2p_dbg(p2p, "Peer not known anymore");
952 p2p_connect_send(p2p, dev);
960 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
962 struct p2p_data *p2p = eloop_ctx;
964 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
965 running = p2p->p2p_scan_running;
966 /* Make sure we recover from missed scan results callback */
967 p2p->p2p_scan_running = 0;
970 p2p_run_after_scan(p2p);
974 static void p2p_free_req_dev_types(struct p2p_data *p2p)
976 p2p->num_req_dev_types = 0;
977 os_free(p2p->req_dev_types);
978 p2p->req_dev_types = NULL;
982 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
983 enum p2p_discovery_type type,
984 unsigned int num_req_dev_types, const u8 *req_dev_types,
985 const u8 *dev_id, unsigned int search_delay)
989 p2p_dbg(p2p, "Starting find (type=%d)", type);
990 os_get_reltime(&p2p->find_start);
991 if (p2p->p2p_scan_running) {
992 p2p_dbg(p2p, "p2p_scan is already running");
995 p2p_free_req_dev_types(p2p);
996 if (req_dev_types && num_req_dev_types) {
997 p2p->req_dev_types = os_malloc(num_req_dev_types *
999 if (p2p->req_dev_types == NULL)
1001 os_memcpy(p2p->req_dev_types, req_dev_types,
1002 num_req_dev_types * WPS_DEV_TYPE_LEN);
1003 p2p->num_req_dev_types = num_req_dev_types;
1007 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1008 p2p->find_dev_id = p2p->find_dev_id_buf;
1010 p2p->find_dev_id = NULL;
1012 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1013 p2p_clear_timeout(p2p);
1014 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1015 p2p->find_type = type;
1016 p2p_device_clear_reported(p2p);
1017 p2p_set_state(p2p, P2P_SEARCH);
1018 p2p->search_delay = search_delay;
1019 p2p->in_search_delay = 0;
1020 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1021 p2p->last_p2p_find_timeout = timeout;
1023 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1026 case P2P_FIND_START_WITH_FULL:
1027 case P2P_FIND_PROGRESSIVE:
1028 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1029 p2p->num_req_dev_types,
1030 p2p->req_dev_types, dev_id,
1033 case P2P_FIND_ONLY_SOCIAL:
1034 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1035 p2p->num_req_dev_types,
1036 p2p->req_dev_types, dev_id,
1044 p2p_dbg(p2p, "Running p2p_scan");
1045 p2p->p2p_scan_running = 1;
1046 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1047 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1049 } else if (p2p->p2p_scan_running) {
1050 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1051 /* wait for the previous p2p_scan to complete */
1053 p2p_dbg(p2p, "Failed to start p2p_scan");
1054 p2p_set_state(p2p, P2P_IDLE);
1055 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1062 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1064 p2p_dbg(p2p, "Stopping find");
1065 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1066 p2p_clear_timeout(p2p);
1067 if (p2p->state == P2P_SEARCH)
1068 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1069 p2p_set_state(p2p, P2P_IDLE);
1070 p2p_free_req_dev_types(p2p);
1071 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1072 if (p2p->go_neg_peer)
1073 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1074 p2p->go_neg_peer = NULL;
1075 p2p->sd_peer = NULL;
1076 p2p->invite_peer = NULL;
1077 p2p_stop_listen_for_freq(p2p, freq);
1081 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1083 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1084 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1087 if (p2p->in_listen) {
1089 p2p_clear_timeout(p2p);
1091 if (p2p->drv_in_listen) {
1093 * The driver may not deliver callback to p2p_listen_end()
1094 * when the operation gets canceled, so clear the internal
1095 * variable that is tracking driver state.
1097 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1098 p2p->drv_in_listen = 0;
1100 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1104 void p2p_stop_listen(struct p2p_data *p2p)
1106 if (p2p->state != P2P_LISTEN_ONLY) {
1107 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1111 p2p_stop_listen_for_freq(p2p, 0);
1112 p2p_set_state(p2p, P2P_IDLE);
1116 void p2p_stop_find(struct p2p_data *p2p)
1118 p2p_stop_find_for_freq(p2p, 0);
1122 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1123 unsigned int force_freq,
1124 unsigned int pref_freq, int go)
1126 u8 op_class, op_channel;
1127 unsigned int freq = force_freq ? force_freq : pref_freq;
1129 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1130 force_freq, pref_freq, go);
1131 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1132 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1136 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1137 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1139 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1140 freq, op_class, op_channel);
1144 p2p->op_reg_class = op_class;
1145 p2p->op_channel = op_channel;
1148 p2p->channels.reg_classes = 1;
1149 p2p->channels.reg_class[0].channels = 1;
1150 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1151 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1153 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1154 sizeof(struct p2p_channels));
1161 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1163 u8 op_class, op_channel;
1164 const int op_classes_5ghz[] = { 124, 115, 0 };
1165 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1166 const int op_classes_vht[] = { 128, 0 };
1168 p2p_dbg(p2p, "Prepare channel best");
1170 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1171 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1172 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1174 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1175 p2p->op_reg_class = op_class;
1176 p2p->op_channel = op_channel;
1177 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1178 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1179 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1181 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1182 p2p->op_reg_class = op_class;
1183 p2p->op_channel = op_channel;
1184 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1185 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1186 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1187 &op_channel) == 0) {
1188 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1189 p2p->op_reg_class = op_class;
1190 p2p->op_channel = op_channel;
1191 } else if (p2p->cfg->num_pref_chan > 0 &&
1192 p2p_channels_includes(&p2p->cfg->channels,
1193 p2p->cfg->pref_chan[0].op_class,
1194 p2p->cfg->pref_chan[0].chan)) {
1195 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1196 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1197 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1198 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1199 &p2p->op_reg_class, &p2p->op_channel) ==
1201 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1202 p2p->op_reg_class, p2p->op_channel);
1203 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1204 &p2p->op_reg_class, &p2p->op_channel) ==
1206 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1207 p2p->op_reg_class, p2p->op_channel);
1208 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1209 &p2p->op_reg_class, &p2p->op_channel) ==
1211 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1212 p2p->op_reg_class, p2p->op_channel);
1214 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1215 p2p->op_reg_class = p2p->cfg->op_reg_class;
1216 p2p->op_channel = p2p->cfg->op_channel;
1219 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1220 sizeof(struct p2p_channels));
1225 * p2p_prepare_channel - Select operating channel for GO Negotiation
1226 * @p2p: P2P module context from p2p_init()
1227 * @dev: Selected peer device
1228 * @force_freq: Forced frequency in MHz or 0 if not forced
1229 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1230 * @go: Whether the local end will be forced to be GO
1231 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1233 * This function is used to do initial operating channel selection for GO
1234 * Negotiation prior to having received peer information. The selected channel
1235 * may be further optimized in p2p_reselect_channel() once the peer information
1238 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1239 unsigned int force_freq, unsigned int pref_freq, int go)
1241 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1242 force_freq, pref_freq, go);
1243 if (force_freq || pref_freq) {
1244 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1248 p2p_prepare_channel_best(p2p);
1250 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1252 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1253 else if (!force_freq)
1254 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1256 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1258 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1259 p2p->op_reg_class, p2p->op_channel,
1260 force_freq ? " (forced)" : "");
1263 dev->flags |= P2P_DEV_FORCE_FREQ;
1265 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1271 static void p2p_set_dev_persistent(struct p2p_device *dev,
1272 int persistent_group)
1274 switch (persistent_group) {
1276 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1277 P2P_DEV_PREFER_PERSISTENT_RECONN);
1280 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1281 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1284 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1285 P2P_DEV_PREFER_PERSISTENT_RECONN;
1291 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1292 enum p2p_wps_method wps_method,
1293 int go_intent, const u8 *own_interface_addr,
1294 unsigned int force_freq, int persistent_group,
1295 const u8 *force_ssid, size_t force_ssid_len,
1296 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1298 struct p2p_device *dev;
1300 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1301 " GO Intent=%d Intended Interface Address=" MACSTR
1302 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1304 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1305 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1307 dev = p2p_get_device(p2p, peer_addr);
1308 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1309 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1310 MAC2STR(peer_addr));
1314 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1315 go_intent == 15) < 0)
1318 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1319 if (!(dev->info.dev_capab &
1320 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1321 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1322 " that is in a group and is not discoverable",
1323 MAC2STR(peer_addr));
1326 if (dev->oper_freq <= 0) {
1327 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1328 " with incomplete information",
1329 MAC2STR(peer_addr));
1334 * First, try to connect directly. If the peer does not
1335 * acknowledge frames, assume it is sleeping and use device
1336 * discoverability via the GO at that point.
1342 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1343 force_ssid, force_ssid_len);
1344 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1345 p2p->ssid_len = force_ssid_len;
1349 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1350 dev->flags &= ~P2P_DEV_USER_REJECTED;
1351 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1352 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1353 if (pd_before_go_neg)
1354 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1356 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1358 * Assign dialog token and tie breaker here to use the same
1359 * values in each retry within the same GO Negotiation exchange.
1361 dev->dialog_token++;
1362 if (dev->dialog_token == 0)
1363 dev->dialog_token = 1;
1364 dev->tie_breaker = p2p->next_tie_breaker;
1365 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1367 dev->connect_reqs = 0;
1368 dev->go_neg_req_sent = 0;
1369 dev->go_state = UNKNOWN_GO;
1370 p2p_set_dev_persistent(dev, persistent_group);
1371 p2p->go_intent = go_intent;
1372 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1374 if (p2p->state != P2P_IDLE)
1377 if (p2p->after_scan_tx) {
1379 * We need to drop the pending frame to avoid issues with the
1380 * new GO Negotiation, e.g., when the pending frame was from a
1381 * previous attempt at starting a GO Negotiation.
1383 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1384 os_free(p2p->after_scan_tx);
1385 p2p->after_scan_tx = NULL;
1388 dev->wps_method = wps_method;
1389 dev->oob_pw_id = oob_pw_id;
1390 dev->status = P2P_SC_SUCCESS;
1392 if (p2p->p2p_scan_running) {
1393 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1394 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1395 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1398 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1400 return p2p_connect_send(p2p, dev);
1404 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1405 enum p2p_wps_method wps_method,
1406 int go_intent, const u8 *own_interface_addr,
1407 unsigned int force_freq, int persistent_group,
1408 const u8 *force_ssid, size_t force_ssid_len,
1409 unsigned int pref_freq, u16 oob_pw_id)
1411 struct p2p_device *dev;
1413 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1414 " GO Intent=%d Intended Interface Address=" MACSTR
1415 " wps_method=%d persistent_group=%d oob_pw_id=%u",
1416 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1417 wps_method, persistent_group, oob_pw_id);
1419 dev = p2p_get_device(p2p, peer_addr);
1421 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1422 MAC2STR(peer_addr));
1426 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1432 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1433 force_ssid, force_ssid_len);
1434 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1435 p2p->ssid_len = force_ssid_len;
1439 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1440 dev->flags &= ~P2P_DEV_USER_REJECTED;
1441 dev->go_neg_req_sent = 0;
1442 dev->go_state = UNKNOWN_GO;
1443 p2p_set_dev_persistent(dev, persistent_group);
1444 p2p->go_intent = go_intent;
1445 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1447 dev->wps_method = wps_method;
1448 dev->oob_pw_id = oob_pw_id;
1449 dev->status = P2P_SC_SUCCESS;
1455 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1456 struct p2p_device *dev, struct p2p_message *msg)
1458 os_get_reltime(&dev->last_seen);
1460 p2p_copy_wps_info(p2p, dev, 0, msg);
1462 if (msg->listen_channel) {
1464 freq = p2p_channel_to_freq(msg->listen_channel[3],
1465 msg->listen_channel[4]);
1467 p2p_dbg(p2p, "Unknown peer Listen channel: "
1468 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1469 msg->listen_channel[0],
1470 msg->listen_channel[1],
1471 msg->listen_channel[2],
1472 msg->listen_channel[3],
1473 msg->listen_channel[4]);
1475 p2p_dbg(p2p, "Update peer " MACSTR
1476 " Listen channel: %u -> %u MHz",
1477 MAC2STR(dev->info.p2p_device_addr),
1478 dev->listen_freq, freq);
1479 dev->listen_freq = freq;
1483 if (msg->wfd_subelems) {
1484 wpabuf_free(dev->info.wfd_subelems);
1485 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1488 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1489 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1490 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1492 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1493 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1495 MAC2STR(dev->info.p2p_device_addr),
1496 dev->info.dev_capab, dev->info.group_capab,
1497 dev->info.device_name, dev->listen_freq);
1500 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1502 if (dev->flags & P2P_DEV_USER_REJECTED) {
1503 p2p_dbg(p2p, "Do not report rejected device");
1507 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1508 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1509 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1513 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1515 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1516 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1517 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1518 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1519 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1523 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1525 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1526 p2p_random(params->passphrase, 8);
1531 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1533 struct p2p_go_neg_results res;
1534 int go = peer->go_state == LOCAL_GO;
1535 struct p2p_channels intersection;
1539 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1540 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1542 os_memset(&res, 0, sizeof(res));
1544 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1545 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1546 res.wps_method = peer->wps_method;
1547 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1548 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1549 res.persistent_group = 2;
1551 res.persistent_group = 1;
1555 /* Setup AP mode for WPS provisioning */
1556 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1558 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1559 res.ssid_len = p2p->ssid_len;
1560 p2p_random(res.passphrase, 8);
1562 res.freq = peer->oper_freq;
1563 if (p2p->ssid_len) {
1564 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1565 res.ssid_len = p2p->ssid_len;
1569 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1570 p2p_channels_dump(p2p, "peer channels", &peer->channels);
1571 p2p_channels_intersect(&p2p->channels, &peer->channels,
1574 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1575 p2p_channels_dump(p2p, "intersection after no-GO removal",
1579 for (i = 0; i < intersection.reg_classes; i++) {
1580 struct p2p_reg_class *c = &intersection.reg_class[i];
1581 if (freqs + 1 == P2P_MAX_CHANNELS)
1583 for (j = 0; j < c->channels; j++) {
1585 if (freqs + 1 == P2P_MAX_CHANNELS)
1587 freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1590 res.freq_list[freqs++] = freq;
1594 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1596 p2p_clear_timeout(p2p);
1598 peer->go_neg_req_sent = 0;
1599 peer->wps_method = WPS_NOT_READY;
1600 peer->oob_pw_id = 0;
1602 p2p_set_state(p2p, P2P_PROVISIONING);
1603 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1607 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1608 const u8 *data, size_t len, int rx_freq)
1610 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1611 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1617 case P2P_GO_NEG_REQ:
1618 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1620 case P2P_GO_NEG_RESP:
1621 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1623 case P2P_GO_NEG_CONF:
1624 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1626 case P2P_INVITATION_REQ:
1627 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1630 case P2P_INVITATION_RESP:
1631 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
1632 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1634 case P2P_PROV_DISC_REQ:
1635 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1637 case P2P_PROV_DISC_RESP:
1638 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1640 case P2P_DEV_DISC_REQ:
1641 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1643 case P2P_DEV_DISC_RESP:
1644 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1647 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1654 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1655 const u8 *sa, const u8 *bssid, const u8 *data,
1656 size_t len, int freq)
1662 case WLAN_PA_VENDOR_SPECIFIC:
1667 if (WPA_GET_BE24(data) != OUI_WFA)
1675 if (*data != P2P_OUI_TYPE)
1678 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1680 case WLAN_PA_GAS_INITIAL_REQ:
1681 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1683 case WLAN_PA_GAS_INITIAL_RESP:
1684 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1686 case WLAN_PA_GAS_COMEBACK_REQ:
1687 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1689 case WLAN_PA_GAS_COMEBACK_RESP:
1690 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1696 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1697 const u8 *bssid, u8 category,
1698 const u8 *data, size_t len, int freq)
1700 if (category == WLAN_ACTION_PUBLIC) {
1701 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1705 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1711 if (WPA_GET_BE24(data) != OUI_WFA)
1716 if (*data != P2P_OUI_TYPE)
1721 /* P2P action frame */
1722 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1723 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1729 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1732 case P2P_PRESENCE_REQ:
1733 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1735 case P2P_PRESENCE_RESP:
1736 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1738 case P2P_GO_DISC_REQ:
1739 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1742 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1748 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1750 struct p2p_data *p2p = eloop_ctx;
1751 if (p2p->go_neg_peer == NULL)
1753 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1754 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1755 p2p_connect_send(p2p, p2p->go_neg_peer);
1759 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1761 struct p2p_data *p2p = eloop_ctx;
1762 if (p2p->invite_peer == NULL)
1764 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1765 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1766 p2p->invite_dev_pw_id);
1770 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1771 const u8 *ie, size_t ie_len)
1773 struct p2p_message msg;
1774 struct p2p_device *dev;
1776 os_memset(&msg, 0, sizeof(msg));
1777 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1779 p2p_parse_free(&msg);
1780 return; /* not a P2P probe */
1783 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1784 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1786 /* The Probe Request is not part of P2P Device Discovery. It is
1787 * not known whether the source address of the frame is the P2P
1788 * Device Address or P2P Interface Address. Do not add a new
1789 * peer entry based on this frames.
1791 p2p_parse_free(&msg);
1795 dev = p2p_get_device(p2p, addr);
1797 if (dev->country[0] == 0 && msg.listen_channel)
1798 os_memcpy(dev->country, msg.listen_channel, 3);
1799 os_get_reltime(&dev->last_seen);
1800 p2p_parse_free(&msg);
1801 return; /* already known */
1804 dev = p2p_create_device(p2p, addr);
1806 p2p_parse_free(&msg);
1810 os_get_reltime(&dev->last_seen);
1811 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1813 if (msg.listen_channel) {
1814 os_memcpy(dev->country, msg.listen_channel, 3);
1815 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1816 msg.listen_channel[4]);
1819 p2p_copy_wps_info(p2p, dev, 1, &msg);
1821 if (msg.wfd_subelems) {
1822 wpabuf_free(dev->info.wfd_subelems);
1823 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1826 p2p_parse_free(&msg);
1828 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1829 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1830 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1831 dev->info.group_capab, dev->info.device_name,
1836 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1838 struct p2p_message *msg)
1840 struct p2p_device *dev;
1842 dev = p2p_get_device(p2p, addr);
1844 os_get_reltime(&dev->last_seen);
1845 return dev; /* already known */
1848 dev = p2p_create_device(p2p, addr);
1852 p2p_add_dev_info(p2p, addr, dev, msg);
1858 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1860 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1862 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1863 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1864 WPA_GET_BE16(&req_dev_type[6]) == 0)
1865 return 1; /* Category match with wildcard OUI/sub-category */
1870 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1871 size_t num_req_dev_type)
1874 for (i = 0; i < num_req_dev_type; i++) {
1875 if (dev_type_match(dev_type, req_dev_type[i]))
1883 * p2p_match_dev_type - Match local device type with requested type
1884 * @p2p: P2P module context from p2p_init()
1885 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1886 * Returns: 1 on match, 0 on mismatch
1888 * This function can be used to match the Requested Device Type attribute in
1889 * WPS IE with the local device types for deciding whether to reply to a Probe
1892 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1894 struct wps_parse_attr attr;
1897 if (wps_parse_msg(wps, &attr))
1898 return 1; /* assume no Requested Device Type attributes */
1900 if (attr.num_req_dev_type == 0)
1901 return 1; /* no Requested Device Type attributes -> match */
1903 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1904 attr.num_req_dev_type))
1905 return 1; /* Own Primary Device Type matches */
1907 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1908 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1910 attr.num_req_dev_type))
1911 return 1; /* Own Secondary Device Type matches */
1913 /* No matching device type found */
1918 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1925 #ifdef CONFIG_WIFI_DISPLAY
1926 if (p2p->wfd_ie_probe_resp)
1927 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1928 #endif /* CONFIG_WIFI_DISPLAY */
1930 buf = wpabuf_alloc(1000 + extra);
1934 if (p2p->go_neg_peer) {
1935 /* Advertise immediate availability of WPS credential */
1936 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1939 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
1940 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
1945 #ifdef CONFIG_WIFI_DISPLAY
1946 if (p2p->wfd_ie_probe_resp)
1947 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1948 #endif /* CONFIG_WIFI_DISPLAY */
1951 len = p2p_buf_add_ie_hdr(buf);
1952 p2p_buf_add_capability(buf, p2p->dev_capab &
1953 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
1954 if (p2p->ext_listen_interval)
1955 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1956 p2p->ext_listen_interval);
1957 p2p_buf_add_device_info(buf, p2p, NULL);
1958 p2p_buf_update_ie_hdr(buf, len);
1964 static enum p2p_probe_req_status
1965 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1966 const u8 *bssid, const u8 *ie, size_t ie_len)
1968 struct ieee802_11_elems elems;
1970 struct ieee80211_mgmt *resp;
1971 struct p2p_message msg;
1974 if (!p2p->in_listen || !p2p->drv_in_listen) {
1975 /* not in Listen state - ignore Probe Request */
1976 return P2P_PREQ_NOT_LISTEN;
1979 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1981 /* Ignore invalid Probe Request frames */
1982 return P2P_PREQ_MALFORMED;
1985 if (elems.p2p == NULL) {
1986 /* not a P2P probe - ignore it */
1987 return P2P_PREQ_NOT_P2P;
1990 if (dst && !is_broadcast_ether_addr(dst) &&
1991 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1992 /* Not sent to the broadcast address or our P2P Device Address
1994 return P2P_PREQ_NOT_PROCESSED;
1997 if (bssid && !is_broadcast_ether_addr(bssid)) {
1998 /* Not sent to the Wildcard BSSID */
1999 return P2P_PREQ_NOT_PROCESSED;
2002 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2003 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2005 /* not using P2P Wildcard SSID - ignore */
2006 return P2P_PREQ_NOT_PROCESSED;
2009 if (supp_rates_11b_only(&elems)) {
2010 /* Indicates support for 11b rates only */
2011 return P2P_PREQ_NOT_P2P;
2014 os_memset(&msg, 0, sizeof(msg));
2015 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2016 /* Could not parse P2P attributes */
2017 return P2P_PREQ_NOT_P2P;
2020 if (msg.device_id &&
2021 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2022 /* Device ID did not match */
2023 p2p_parse_free(&msg);
2024 return P2P_PREQ_NOT_PROCESSED;
2027 /* Check Requested Device Type match */
2028 if (msg.wps_attributes &&
2029 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2030 /* No match with Requested Device Type */
2031 p2p_parse_free(&msg);
2032 return P2P_PREQ_NOT_PROCESSED;
2034 p2p_parse_free(&msg);
2036 if (!p2p->cfg->send_probe_resp) {
2037 /* Response generated elsewhere */
2038 return P2P_PREQ_NOT_PROCESSED;
2041 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2044 * We do not really have a specific BSS that this frame is advertising,
2045 * so build a frame that has some information in valid format. This is
2046 * really only used for discovery purposes, not to learn exact BSS
2049 ies = p2p_build_probe_resp_ies(p2p);
2051 return P2P_PREQ_NOT_PROCESSED;
2053 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2056 return P2P_PREQ_NOT_PROCESSED;
2060 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2062 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2063 (WLAN_FC_STYPE_PROBE_RESP << 4));
2064 os_memcpy(resp->da, addr, ETH_ALEN);
2065 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2066 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2067 resp->u.probe_resp.beacon_int = host_to_le16(100);
2068 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2069 resp->u.probe_resp.capab_info =
2070 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2071 WLAN_CAPABILITY_PRIVACY |
2072 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2074 wpabuf_put_u8(buf, WLAN_EID_SSID);
2075 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2076 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2078 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2079 wpabuf_put_u8(buf, 8);
2080 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2081 wpabuf_put_u8(buf, 90 / 5);
2082 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2083 wpabuf_put_u8(buf, 180 / 5);
2084 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2085 wpabuf_put_u8(buf, 360 / 5);
2086 wpabuf_put_u8(buf, 480 / 5);
2087 wpabuf_put_u8(buf, 540 / 5);
2089 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2090 wpabuf_put_u8(buf, 1);
2091 wpabuf_put_u8(buf, p2p->cfg->channel);
2093 wpabuf_put_buf(buf, ies);
2096 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2100 return P2P_PREQ_NOT_PROCESSED;
2104 enum p2p_probe_req_status
2105 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2106 const u8 *bssid, const u8 *ie, size_t ie_len)
2108 enum p2p_probe_req_status res;
2110 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2112 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2114 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2116 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2118 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2119 /* Received a Probe Request from GO Negotiation peer */
2120 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2121 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2122 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2123 return P2P_PREQ_PROCESSED;
2126 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2128 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2130 /* Received a Probe Request from Invite peer */
2131 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2132 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2133 return P2P_PREQ_PROCESSED;
2140 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2141 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2150 return 0; /* WLAN AP is not a P2P manager */
2153 * (Re)Association Request - P2P IE
2154 * P2P Capability attribute (shall be present)
2155 * P2P Interface attribute (present if concurrent device and
2156 * P2P Management is enabled)
2158 tmp = wpabuf_alloc(200);
2162 lpos = p2p_buf_add_ie_hdr(tmp);
2164 if (p2p->num_groups > 0) {
2165 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2166 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2167 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2169 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2171 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2172 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2173 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2174 p2p_buf_add_p2p_interface(tmp, p2p);
2175 p2p_buf_update_ie_hdr(tmp, lpos);
2177 tmplen = wpabuf_len(tmp);
2181 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2190 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2191 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2195 struct p2p_device *peer;
2201 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2203 #ifdef CONFIG_WIFI_DISPLAY
2204 if (p2p->wfd_ie_assoc_req)
2205 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2206 #endif /* CONFIG_WIFI_DISPLAY */
2209 * (Re)Association Request - P2P IE
2210 * P2P Capability attribute (shall be present)
2211 * Extended Listen Timing (may be present)
2212 * P2P Device Info attribute (shall be present)
2214 tmp = wpabuf_alloc(200 + extra);
2218 #ifdef CONFIG_WIFI_DISPLAY
2219 if (p2p->wfd_ie_assoc_req)
2220 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2221 #endif /* CONFIG_WIFI_DISPLAY */
2223 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2225 lpos = p2p_buf_add_ie_hdr(tmp);
2226 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2227 if (p2p->ext_listen_interval)
2228 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2229 p2p->ext_listen_interval);
2230 p2p_buf_add_device_info(tmp, p2p, peer);
2231 p2p_buf_update_ie_hdr(tmp, lpos);
2233 tmplen = wpabuf_len(tmp);
2237 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2246 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2248 struct wpabuf *p2p_ie;
2251 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2255 ret = p2p_attr_text(p2p_ie, buf, end);
2256 wpabuf_free(p2p_ie);
2261 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2263 struct p2p_message msg;
2265 os_memset(&msg, 0, sizeof(msg));
2266 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2269 if (msg.p2p_device_addr) {
2270 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2272 } else if (msg.device_id) {
2273 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2280 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2282 struct wpabuf *p2p_ie;
2285 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2286 P2P_IE_VENDOR_TYPE);
2289 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2290 wpabuf_free(p2p_ie);
2295 static void p2p_clear_go_neg(struct p2p_data *p2p)
2297 p2p->go_neg_peer = NULL;
2298 p2p_clear_timeout(p2p);
2299 p2p_set_state(p2p, P2P_IDLE);
2303 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2305 if (p2p->go_neg_peer == NULL) {
2306 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2307 return; /* No pending Group Formation */
2310 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2312 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2313 MACSTR " (GO Negotiation peer " MACSTR ")",
2315 MAC2STR(p2p->go_neg_peer->intended_addr));
2316 return; /* Ignore unexpected peer address */
2319 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2322 p2p_clear_go_neg(p2p);
2326 void p2p_group_formation_failed(struct p2p_data *p2p)
2328 if (p2p->go_neg_peer == NULL) {
2329 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2330 return; /* No pending Group Formation */
2333 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2334 MAC2STR(p2p->go_neg_peer->intended_addr));
2336 p2p_clear_go_neg(p2p);
2340 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2342 struct p2p_data *p2p;
2344 if (cfg->max_peers < 1)
2347 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2350 p2p->cfg = (struct p2p_config *) (p2p + 1);
2351 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2353 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2354 if (cfg->manufacturer)
2355 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2356 if (cfg->model_name)
2357 p2p->cfg->model_name = os_strdup(cfg->model_name);
2358 if (cfg->model_number)
2359 p2p->cfg->model_number = os_strdup(cfg->model_number);
2360 if (cfg->serial_number)
2361 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2362 if (cfg->pref_chan) {
2363 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2364 sizeof(struct p2p_channel));
2365 if (p2p->cfg->pref_chan) {
2366 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2367 cfg->num_pref_chan *
2368 sizeof(struct p2p_channel));
2370 p2p->cfg->num_pref_chan = 0;
2373 p2p->min_disc_int = 1;
2374 p2p->max_disc_int = 3;
2375 p2p->max_disc_tu = -1;
2377 os_get_random(&p2p->next_tie_breaker, 1);
2378 p2p->next_tie_breaker &= 0x01;
2379 if (cfg->sd_request)
2380 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2381 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2382 if (cfg->concurrent_operations)
2383 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2384 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2386 dl_list_init(&p2p->devices);
2388 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2389 p2p_expiration_timeout, p2p, NULL);
2391 p2p->go_timeout = 100;
2392 p2p->client_timeout = 20;
2394 p2p_dbg(p2p, "initialized");
2395 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2396 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2402 void p2p_deinit(struct p2p_data *p2p)
2404 #ifdef CONFIG_WIFI_DISPLAY
2405 wpabuf_free(p2p->wfd_ie_beacon);
2406 wpabuf_free(p2p->wfd_ie_probe_req);
2407 wpabuf_free(p2p->wfd_ie_probe_resp);
2408 wpabuf_free(p2p->wfd_ie_assoc_req);
2409 wpabuf_free(p2p->wfd_ie_invitation);
2410 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2411 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2412 wpabuf_free(p2p->wfd_ie_go_neg);
2413 wpabuf_free(p2p->wfd_dev_info);
2414 wpabuf_free(p2p->wfd_assoc_bssid);
2415 wpabuf_free(p2p->wfd_coupled_sink_info);
2416 #endif /* CONFIG_WIFI_DISPLAY */
2418 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2419 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2420 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2421 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2423 p2p_free_req_dev_types(p2p);
2424 os_free(p2p->cfg->dev_name);
2425 os_free(p2p->cfg->manufacturer);
2426 os_free(p2p->cfg->model_name);
2427 os_free(p2p->cfg->model_number);
2428 os_free(p2p->cfg->serial_number);
2429 os_free(p2p->cfg->pref_chan);
2430 os_free(p2p->groups);
2431 wpabuf_free(p2p->sd_resp);
2432 os_free(p2p->after_scan_tx);
2433 p2p_remove_wps_vendor_extensions(p2p);
2434 os_free(p2p->no_go_freq.range);
2439 void p2p_flush(struct p2p_data *p2p)
2441 struct p2p_device *dev, *prev;
2443 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2445 dl_list_del(&dev->list);
2446 p2p_device_free(p2p, dev);
2448 p2p_free_sd_queries(p2p);
2449 os_free(p2p->after_scan_tx);
2450 p2p->after_scan_tx = NULL;
2454 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2456 struct p2p_device *dev;
2458 dev = p2p_get_device(p2p, addr);
2462 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2464 if (p2p->go_neg_peer == dev)
2465 p2p->go_neg_peer = NULL;
2467 dev->wps_method = WPS_NOT_READY;
2469 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2470 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2472 /* Check if after_scan_tx is for this peer. If so free it */
2473 if (p2p->after_scan_tx &&
2474 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2475 os_free(p2p->after_scan_tx);
2476 p2p->after_scan_tx = NULL;
2483 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2485 os_free(p2p->cfg->dev_name);
2487 p2p->cfg->dev_name = os_strdup(dev_name);
2488 if (p2p->cfg->dev_name == NULL)
2491 p2p->cfg->dev_name = NULL;
2496 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2498 os_free(p2p->cfg->manufacturer);
2499 p2p->cfg->manufacturer = NULL;
2501 p2p->cfg->manufacturer = os_strdup(manufacturer);
2502 if (p2p->cfg->manufacturer == NULL)
2510 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2512 os_free(p2p->cfg->model_name);
2513 p2p->cfg->model_name = NULL;
2515 p2p->cfg->model_name = os_strdup(model_name);
2516 if (p2p->cfg->model_name == NULL)
2524 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2526 os_free(p2p->cfg->model_number);
2527 p2p->cfg->model_number = NULL;
2529 p2p->cfg->model_number = os_strdup(model_number);
2530 if (p2p->cfg->model_number == NULL)
2538 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2540 os_free(p2p->cfg->serial_number);
2541 p2p->cfg->serial_number = NULL;
2542 if (serial_number) {
2543 p2p->cfg->serial_number = os_strdup(serial_number);
2544 if (p2p->cfg->serial_number == NULL)
2552 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2554 p2p->cfg->config_methods = config_methods;
2558 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2560 os_memcpy(p2p->cfg->uuid, uuid, 16);
2564 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2566 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2571 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2572 size_t num_dev_types)
2574 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2575 num_dev_types = P2P_SEC_DEVICE_TYPES;
2576 p2p->cfg->num_sec_dev_types = num_dev_types;
2577 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2582 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2586 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2587 wpabuf_free(p2p->wps_vendor_ext[i]);
2588 p2p->wps_vendor_ext[i] = NULL;
2593 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2594 const struct wpabuf *vendor_ext)
2598 if (vendor_ext == NULL)
2601 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2602 if (p2p->wps_vendor_ext[i] == NULL)
2605 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2608 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2609 if (p2p->wps_vendor_ext[i] == NULL)
2616 int p2p_set_country(struct p2p_data *p2p, const char *country)
2618 os_memcpy(p2p->cfg->country, country, 3);
2623 void p2p_continue_find(struct p2p_data *p2p)
2625 struct p2p_device *dev;
2626 p2p_set_state(p2p, P2P_SEARCH);
2627 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2628 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2629 if (p2p_start_sd(p2p, dev) == 0)
2633 } else if (dev->req_config_methods &&
2634 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2635 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2636 MACSTR " (config methods 0x%x)",
2637 MAC2STR(dev->info.p2p_device_addr),
2638 dev->req_config_methods);
2639 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2644 p2p_listen_in_find(p2p, 1);
2648 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2650 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2652 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2656 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2657 p2p->sd_peer = NULL;
2659 p2p_continue_find(p2p);
2663 if (p2p->sd_peer == NULL) {
2664 p2p_dbg(p2p, "No SD peer entry known");
2665 p2p_continue_find(p2p);
2669 /* Wait for response from the peer */
2670 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2671 p2p_set_timeout(p2p, 0, 200000);
2676 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2677 * @p2p: P2P module context from p2p_init()
2679 static void p2p_retry_pd(struct p2p_data *p2p)
2681 struct p2p_device *dev;
2683 if (p2p->state != P2P_IDLE)
2687 * Retry the prov disc req attempt only for the peer that the user had
2691 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2692 if (os_memcmp(p2p->pending_pd_devaddr,
2693 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2695 if (!dev->req_config_methods)
2698 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2699 MACSTR " (config methods 0x%x)",
2700 MAC2STR(dev->info.p2p_device_addr),
2701 dev->req_config_methods);
2702 p2p_send_prov_disc_req(p2p, dev,
2703 dev->flags & P2P_DEV_PD_FOR_JOIN,
2704 p2p->pd_force_freq);
2710 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2712 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2716 * Postpone resetting the pending action state till after we actually
2717 * time out. This allows us to take some action like notifying any
2718 * interested parties about no response to the request.
2720 * When the timer (below) goes off we check in IDLE, SEARCH, or
2721 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2722 * requests in, if this was still pending and then raise notification.
2726 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2728 if (p2p->user_initiated_pd &&
2729 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2731 /* Retry request from timeout to avoid busy loops */
2732 p2p->pending_action_state = P2P_PENDING_PD;
2733 p2p_set_timeout(p2p, 0, 50000);
2734 } else if (p2p->state != P2P_IDLE)
2735 p2p_continue_find(p2p);
2736 else if (p2p->user_initiated_pd) {
2737 p2p->pending_action_state = P2P_PENDING_PD;
2738 p2p_set_timeout(p2p, 0, 300000);
2744 * This postponing, of resetting pending_action_state, needs to be
2745 * done only for user initiated PD requests and not internal ones.
2747 if (p2p->user_initiated_pd)
2748 p2p->pending_action_state = P2P_PENDING_PD;
2750 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2752 /* Wait for response from the peer */
2753 if (p2p->state == P2P_SEARCH)
2754 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2755 p2p_set_timeout(p2p, 0, 200000);
2759 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2760 struct os_reltime *rx_time, int level, const u8 *ies,
2763 if (os_reltime_before(rx_time, &p2p->find_start)) {
2765 * The driver may have cached (e.g., in cfg80211 BSS table) the
2766 * scan results for relatively long time. To avoid reporting
2767 * stale information, update P2P peers only based on results
2768 * that have based on frames received after the last p2p_find
2769 * operation was started.
2771 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2772 " (rx_time=%u.%06u)",
2773 MAC2STR(bssid), (unsigned int) rx_time->sec,
2774 (unsigned int) rx_time->usec);
2778 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2784 void p2p_scan_res_handled(struct p2p_data *p2p)
2786 if (!p2p->p2p_scan_running) {
2787 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2789 p2p->p2p_scan_running = 0;
2790 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2792 if (p2p_run_after_scan(p2p))
2794 if (p2p->state == P2P_SEARCH)
2795 p2p_continue_find(p2p);
2799 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2803 #ifdef CONFIG_WIFI_DISPLAY
2804 if (p2p->wfd_ie_probe_req)
2805 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2806 #endif /* CONFIG_WIFI_DISPLAY */
2808 len = p2p_buf_add_ie_hdr(ies);
2809 p2p_buf_add_capability(ies, p2p->dev_capab &
2810 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2812 p2p_buf_add_device_id(ies, dev_id);
2813 if (p2p->cfg->reg_class && p2p->cfg->channel)
2814 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2815 p2p->cfg->reg_class,
2817 if (p2p->ext_listen_interval)
2818 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2819 p2p->ext_listen_interval);
2820 /* TODO: p2p_buf_add_operating_channel() if GO */
2821 p2p_buf_update_ie_hdr(ies, len);
2825 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2829 #ifdef CONFIG_WIFI_DISPLAY
2830 if (p2p && p2p->wfd_ie_probe_req)
2831 len += wpabuf_len(p2p->wfd_ie_probe_req);
2832 #endif /* CONFIG_WIFI_DISPLAY */
2838 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2840 return p2p_attr_text(p2p_ie, buf, end);
2844 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2846 struct p2p_device *dev = p2p->go_neg_peer;
2849 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2852 p2p_dbg(p2p, "No pending GO Negotiation");
2857 if (dev->flags & P2P_DEV_USER_REJECTED) {
2858 p2p_set_state(p2p, P2P_IDLE);
2861 } else if (dev->go_neg_req_sent) {
2862 /* Cancel the increment from p2p_connect_send() on failure */
2863 dev->go_neg_req_sent--;
2867 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2868 !is_zero_ether_addr(dev->member_in_go_dev)) {
2869 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
2870 MAC2STR(dev->info.p2p_device_addr));
2871 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2872 p2p_send_dev_disc_req(p2p, dev);
2877 * Use P2P find, if needed, to find the other device from its listen
2880 p2p_set_state(p2p, P2P_CONNECT);
2881 timeout = success ? 500000 : 100000;
2882 if (!success && p2p->go_neg_peer &&
2883 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2886 * Peer is expected to wait our response and we will skip the
2887 * listen phase. Add some randomness to the wait time here to
2888 * make it less likely to hit cases where we could end up in
2889 * sync with peer not listening.
2891 os_get_random((u8 *) &r, sizeof(r));
2892 timeout += r % 100000;
2894 p2p_set_timeout(p2p, 0, timeout);
2898 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2900 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
2902 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2903 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
2906 p2p_set_state(p2p, P2P_CONNECT);
2907 p2p_set_timeout(p2p, 0, 500000);
2911 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2914 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
2915 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2916 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2917 p2p->go_neg_peer->status);
2918 } else if (success) {
2919 struct p2p_device *dev;
2920 dev = p2p_get_device(p2p, addr);
2922 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2923 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
2928 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2929 enum p2p_send_action_result result)
2931 struct p2p_device *dev;
2933 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
2934 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2935 if (result == P2P_SEND_ACTION_FAILED) {
2936 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2939 if (result == P2P_SEND_ACTION_NO_ACK) {
2941 * It looks like the TX status for GO Negotiation Confirm is
2942 * often showing failure even when the peer has actually
2943 * received the frame. Since the peer may change channels
2944 * immediately after having received the frame, we may not see
2945 * an Ack for retries, so just dropping a single frame may
2946 * trigger this. To allow the group formation to succeed if the
2947 * peer did indeed receive the frame, continue regardless of
2950 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
2953 dev = p2p->go_neg_peer;
2957 p2p_go_complete(p2p, dev);
2961 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2962 const u8 *src, const u8 *bssid,
2963 enum p2p_send_action_result result)
2965 enum p2p_pending_action_state state;
2968 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
2969 " src=" MACSTR " bssid=" MACSTR " result=%d",
2970 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2971 MAC2STR(bssid), result);
2972 success = result == P2P_SEND_ACTION_SUCCESS;
2973 state = p2p->pending_action_state;
2974 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2976 case P2P_NO_PENDING_ACTION:
2977 if (p2p->after_scan_tx_in_progress) {
2978 p2p->after_scan_tx_in_progress = 0;
2979 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
2980 p2p_run_after_scan(p2p))
2982 if (p2p->state == P2P_SEARCH) {
2983 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
2984 p2p_continue_find(p2p);
2988 case P2P_PENDING_GO_NEG_REQUEST:
2989 p2p_go_neg_req_cb(p2p, success);
2991 case P2P_PENDING_GO_NEG_RESPONSE:
2992 p2p_go_neg_resp_cb(p2p, success);
2994 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2995 p2p_go_neg_resp_failure_cb(p2p, success, dst);
2997 case P2P_PENDING_GO_NEG_CONFIRM:
2998 p2p_go_neg_conf_cb(p2p, result);
3000 case P2P_PENDING_SD:
3001 p2p_sd_cb(p2p, success);
3003 case P2P_PENDING_PD:
3004 p2p_prov_disc_cb(p2p, success);
3006 case P2P_PENDING_INVITATION_REQUEST:
3007 p2p_invitation_req_cb(p2p, success);
3009 case P2P_PENDING_INVITATION_RESPONSE:
3010 p2p_invitation_resp_cb(p2p, success);
3012 case P2P_PENDING_DEV_DISC_REQUEST:
3013 p2p_dev_disc_req_cb(p2p, success);
3015 case P2P_PENDING_DEV_DISC_RESPONSE:
3016 p2p_dev_disc_resp_cb(p2p, success);
3018 case P2P_PENDING_GO_DISC_REQ:
3019 p2p_go_disc_req_cb(p2p, success);
3023 p2p->after_scan_tx_in_progress = 0;
3027 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3028 unsigned int duration)
3030 if (freq == p2p->pending_client_disc_freq) {
3031 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3032 p2p->pending_client_disc_freq = 0;
3036 if (freq != p2p->pending_listen_freq) {
3037 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3038 freq, duration, p2p->pending_listen_freq);
3042 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3043 p2p->pending_listen_sec, p2p->pending_listen_usec,
3044 p2p->pending_listen_freq);
3046 p2p->drv_in_listen = freq;
3047 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3049 * Add 20 msec extra wait to avoid race condition with driver
3050 * remain-on-channel end event, i.e., give driver more time to
3051 * complete the operation before our timeout expires.
3053 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3054 p2p->pending_listen_usec + 20000);
3057 p2p->pending_listen_freq = 0;
3061 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3063 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3064 p2p->drv_in_listen = 0;
3066 return 0; /* Internal timeout will trigger the next step */
3068 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3069 if (p2p->go_neg_peer->connect_reqs >= 120) {
3070 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3071 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3075 p2p_set_state(p2p, P2P_CONNECT);
3076 p2p_connect_send(p2p, p2p->go_neg_peer);
3078 } else if (p2p->state == P2P_SEARCH) {
3079 if (p2p->p2p_scan_running) {
3081 * Search is already in progress. This can happen if
3082 * an Action frame RX is reported immediately after
3083 * the end of a remain-on-channel operation and the
3084 * response frame to that is sent using an offchannel
3085 * operation while in p2p_find. Avoid an attempt to
3086 * restart a scan here.
3088 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3091 if (p2p->pending_listen_freq) {
3093 * Better wait a bit if the driver is unable to start
3094 * offchannel operation for some reason. p2p_search()
3095 * will be started from internal timeout.
3097 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3098 p2p_set_timeout(p2p, 0, 100000);
3101 if (p2p->search_delay) {
3102 p2p_dbg(p2p, "Delay search operation by %u ms",
3104 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3105 (p2p->search_delay % 1000) * 1000);
3116 static void p2p_timeout_connect(struct p2p_data *p2p)
3118 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3119 if (p2p->go_neg_peer &&
3120 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3121 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3122 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3125 if (p2p->go_neg_peer &&
3126 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3127 p2p->go_neg_peer->connect_reqs < 120) {
3128 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3129 p2p_connect_send(p2p, p2p->go_neg_peer);
3132 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3133 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3134 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3135 p2p_set_timeout(p2p, 0, 30000);
3138 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3139 p2p_listen_in_find(p2p, 0);
3143 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3145 if (p2p->go_neg_peer) {
3146 if (p2p->drv_in_listen) {
3147 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3151 if (p2p->go_neg_peer->connect_reqs >= 120) {
3152 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3153 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3157 p2p_set_state(p2p, P2P_CONNECT);
3158 p2p_connect_send(p2p, p2p->go_neg_peer);
3160 p2p_set_state(p2p, P2P_IDLE);
3164 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3166 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3168 if (p2p->cfg->is_concurrent_session_active &&
3169 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3170 p2p_set_timeout(p2p, 0, 500000);
3172 p2p_set_timeout(p2p, 0, 200000);
3176 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3178 struct p2p_device *dev = p2p->go_neg_peer;
3181 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3186 if (dev->wait_count >= 120) {
3187 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3188 p2p_go_neg_failed(p2p, dev, -1);
3192 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3193 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3194 p2p_listen_in_find(p2p, 0);
3198 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3200 p2p_dbg(p2p, "Service Discovery Query timeout");
3202 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3203 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3204 p2p->sd_peer = NULL;
3206 p2p_continue_find(p2p);
3210 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3212 p2p_dbg(p2p, "Provision Discovery Request timeout");
3213 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3214 p2p_continue_find(p2p);
3218 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3220 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3223 * For user initiated PD requests that we have not gotten any responses
3224 * for while in IDLE state, we retry them a couple of times before
3227 if (!p2p->user_initiated_pd)
3230 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3232 if (p2p->pd_retries) {
3236 struct p2p_device *dev;
3239 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3240 if (os_memcmp(p2p->pending_pd_devaddr,
3241 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3243 if (dev->req_config_methods &&
3244 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3248 if (p2p->cfg->prov_disc_fail)
3249 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3250 p2p->pending_pd_devaddr,
3252 P2P_PROV_DISC_TIMEOUT_JOIN :
3253 P2P_PROV_DISC_TIMEOUT);
3254 p2p_reset_pending_pd(p2p);
3259 static void p2p_timeout_invite(struct p2p_data *p2p)
3261 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3262 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3263 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3265 * Better remain on operating channel instead of listen channel
3266 * when running a group.
3268 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3269 p2p_set_timeout(p2p, 0, 100000);
3272 p2p_listen_in_find(p2p, 0);
3276 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3278 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3279 p2p_set_state(p2p, P2P_INVITE);
3280 p2p_invite_send(p2p, p2p->invite_peer,
3281 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3283 if (p2p->invite_peer) {
3284 p2p_dbg(p2p, "Invitation Request retry limit reached");
3285 if (p2p->cfg->invitation_result)
3286 p2p->cfg->invitation_result(
3287 p2p->cfg->cb_ctx, -1, NULL, NULL,
3288 p2p->invite_peer->info.p2p_device_addr,
3291 p2p_set_state(p2p, P2P_IDLE);
3296 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3298 struct p2p_data *p2p = eloop_ctx;
3300 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3304 switch (p2p->state) {
3306 /* Check if we timed out waiting for PD req */
3307 if (p2p->pending_action_state == P2P_PENDING_PD)
3308 p2p_timeout_prov_disc_req(p2p);
3311 /* Check if we timed out waiting for PD req */
3312 if (p2p->pending_action_state == P2P_PENDING_PD)
3313 p2p_timeout_prov_disc_req(p2p);
3314 if (p2p->search_delay && !p2p->in_search_delay) {
3315 p2p_dbg(p2p, "Delay search operation by %u ms",
3317 p2p->in_search_delay = 1;
3318 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3319 (p2p->search_delay % 1000) * 1000);
3322 p2p->in_search_delay = 0;
3326 p2p_timeout_connect(p2p);
3328 case P2P_CONNECT_LISTEN:
3329 p2p_timeout_connect_listen(p2p);
3333 case P2P_LISTEN_ONLY:
3334 /* Check if we timed out waiting for PD req */
3335 if (p2p->pending_action_state == P2P_PENDING_PD)
3336 p2p_timeout_prov_disc_req(p2p);
3338 if (p2p->ext_listen_only) {
3339 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3340 p2p->ext_listen_only = 0;
3341 p2p_set_state(p2p, P2P_IDLE);
3344 case P2P_WAIT_PEER_CONNECT:
3345 p2p_timeout_wait_peer_connect(p2p);
3347 case P2P_WAIT_PEER_IDLE:
3348 p2p_timeout_wait_peer_idle(p2p);
3350 case P2P_SD_DURING_FIND:
3351 p2p_timeout_sd_during_find(p2p);
3353 case P2P_PROVISIONING:
3355 case P2P_PD_DURING_FIND:
3356 p2p_timeout_prov_disc_during_find(p2p);
3359 p2p_timeout_invite(p2p);
3361 case P2P_INVITE_LISTEN:
3362 p2p_timeout_invite_listen(p2p);
3368 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3370 struct p2p_device *dev;
3372 dev = p2p_get_device(p2p, peer_addr);
3373 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3374 MACSTR, MAC2STR(peer_addr));
3376 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3379 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3380 dev->flags |= P2P_DEV_USER_REJECTED;
3385 const char * p2p_wps_method_text(enum p2p_wps_method method)
3390 case WPS_PIN_DISPLAY:
3392 case WPS_PIN_KEYPAD:
3404 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3419 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3420 const u8 *addr, int next)
3422 struct p2p_device *dev;
3425 dev = p2p_get_device(p2p, addr);
3427 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3430 dev = dl_list_first(&dev->list, struct p2p_device, list);
3431 if (&dev->list == &p2p->devices)
3442 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3443 char *buf, size_t buflen)
3445 struct p2p_device *dev;
3448 struct os_reltime now;
3453 dev = (struct p2p_device *) (((u8 *) info) -
3454 offsetof(struct p2p_device, info));
3459 os_get_reltime(&now);
3460 res = os_snprintf(pos, end - pos,
3464 "interface_addr=" MACSTR "\n"
3465 "member_in_go_dev=" MACSTR "\n"
3466 "member_in_go_iface=" MACSTR "\n"
3467 "go_neg_req_sent=%d\n"
3470 "intended_addr=" MACSTR "\n"
3473 "req_config_methods=0x%x\n"
3474 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3477 "invitation_reqs=%u\n",
3478 (int) (now.sec - dev->last_seen.sec),
3480 p2p_wps_method_text(dev->wps_method),
3481 MAC2STR(dev->interface_addr),
3482 MAC2STR(dev->member_in_go_dev),
3483 MAC2STR(dev->member_in_go_iface),
3484 dev->go_neg_req_sent,
3485 p2p_go_state_text(dev->go_state),
3487 MAC2STR(dev->intended_addr),
3488 dev->country[0] ? dev->country[0] : '_',
3489 dev->country[1] ? dev->country[1] : '_',
3491 dev->req_config_methods,
3492 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3493 "[PROBE_REQ_ONLY]" : "",
3494 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3495 dev->flags & P2P_DEV_NOT_YET_READY ?
3496 "[NOT_YET_READY]" : "",
3497 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3498 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3500 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3501 "[PD_PEER_DISPLAY]" : "",
3502 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3503 "[PD_PEER_KEYPAD]" : "",
3504 dev->flags & P2P_DEV_USER_REJECTED ?
3505 "[USER_REJECTED]" : "",
3506 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3507 "[PEER_WAITING_RESPONSE]" : "",
3508 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3509 "[PREFER_PERSISTENT_GROUP]" : "",
3510 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3511 "[WAIT_GO_NEG_RESPONSE]" : "",
3512 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3513 "[WAIT_GO_NEG_CONFIRM]" : "",
3514 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3515 "[GROUP_CLIENT_ONLY]" : "",
3516 dev->flags & P2P_DEV_FORCE_FREQ ?
3517 "[FORCE_FREQ]" : "",
3518 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3519 "[PD_FOR_JOIN]" : "",
3522 dev->invitation_reqs);
3523 if (res < 0 || res >= end - pos)
3527 if (dev->ext_listen_period) {
3528 res = os_snprintf(pos, end - pos,
3529 "ext_listen_period=%u\n"
3530 "ext_listen_interval=%u\n",
3531 dev->ext_listen_period,
3532 dev->ext_listen_interval);
3533 if (res < 0 || res >= end - pos)
3538 if (dev->oper_ssid_len) {
3539 res = os_snprintf(pos, end - pos,
3541 wpa_ssid_txt(dev->oper_ssid,
3542 dev->oper_ssid_len));
3543 if (res < 0 || res >= end - pos)
3548 #ifdef CONFIG_WIFI_DISPLAY
3549 if (dev->info.wfd_subelems) {
3550 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3551 if (res < 0 || res >= end - pos)
3555 pos += wpa_snprintf_hex(pos, end - pos,
3556 wpabuf_head(dev->info.wfd_subelems),
3557 wpabuf_len(dev->info.wfd_subelems));
3559 res = os_snprintf(pos, end - pos, "\n");
3560 if (res < 0 || res >= end - pos)
3564 #endif /* CONFIG_WIFI_DISPLAY */
3570 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3572 return p2p_get_device(p2p, addr) != NULL;
3576 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3579 p2p_dbg(p2p, "Client discoverability enabled");
3580 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3582 p2p_dbg(p2p, "Client discoverability disabled");
3583 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3588 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3589 u32 duration2, u32 interval2)
3592 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3595 req = wpabuf_alloc(100);
3599 if (duration1 || interval1) {
3600 os_memset(&desc1, 0, sizeof(desc1));
3601 desc1.count_type = 1;
3602 desc1.duration = duration1;
3603 desc1.interval = interval1;
3606 if (duration2 || interval2) {
3607 os_memset(&desc2, 0, sizeof(desc2));
3608 desc2.count_type = 2;
3609 desc2.duration = duration2;
3610 desc2.interval = interval2;
3615 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3616 len = p2p_buf_add_ie_hdr(req);
3617 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3618 p2p_buf_update_ie_hdr(req, len);
3624 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3625 const u8 *own_interface_addr, unsigned int freq,
3626 u32 duration1, u32 interval1, u32 duration2,
3631 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3632 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3634 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3635 freq, duration1, interval1, duration2, interval2);
3637 req = p2p_build_presence_req(duration1, interval1, duration2,
3642 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3643 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3645 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3646 p2p_dbg(p2p, "Failed to send Action frame");
3654 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3655 size_t noa_len, u8 dialog_token)
3657 struct wpabuf *resp;
3660 resp = wpabuf_alloc(100 + noa_len);
3664 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3665 len = p2p_buf_add_ie_hdr(resp);
3666 p2p_buf_add_status(resp, status);
3668 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3669 wpabuf_put_le16(resp, noa_len);
3670 wpabuf_put_data(resp, noa, noa_len);
3672 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3673 p2p_buf_update_ie_hdr(resp, len);
3679 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3680 const u8 *sa, const u8 *data, size_t len,
3683 struct p2p_message msg;
3685 struct wpabuf *resp;
3687 struct p2p_group *group = NULL;
3692 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3694 for (g = 0; g < p2p->num_groups; g++) {
3695 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3697 group = p2p->groups[g];
3701 if (group == NULL) {
3702 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3703 MACSTR, MAC2STR(da));
3707 if (p2p_parse(data, len, &msg) < 0) {
3708 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3709 status = P2P_SC_FAIL_INVALID_PARAMS;
3714 if (msg.noa == NULL) {
3715 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3716 status = P2P_SC_FAIL_INVALID_PARAMS;
3720 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3723 if (p2p->cfg->get_noa)
3724 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3728 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3729 noa_len > 0 ? noa_len : 0,
3732 p2p_parse_free(&msg);
3736 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3737 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3738 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3739 p2p_dbg(p2p, "Failed to send Action frame");
3745 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3746 const u8 *sa, const u8 *data, size_t len)
3748 struct p2p_message msg;
3750 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3752 if (p2p_parse(data, len, &msg) < 0) {
3753 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3757 if (msg.status == NULL || msg.noa == NULL) {
3758 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3759 p2p_parse_free(&msg);
3763 if (p2p->cfg->presence_resp) {
3764 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3765 msg.noa, msg.noa_len);
3769 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3771 p2p_parse_free(&msg);
3775 p2p_dbg(p2p, "P2P Presence Request was accepted");
3776 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3777 msg.noa, msg.noa_len);
3778 /* TODO: process NoA */
3779 p2p_parse_free(&msg);
3783 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3785 struct p2p_data *p2p = eloop_ctx;
3787 if (p2p->ext_listen_interval) {
3788 /* Schedule next extended listen timeout */
3789 eloop_register_timeout(p2p->ext_listen_interval_sec,
3790 p2p->ext_listen_interval_usec,
3791 p2p_ext_listen_timeout, p2p, NULL);
3794 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3796 * This should not really happen, but it looks like the Listen
3797 * command may fail is something else (e.g., a scan) was
3798 * running at an inconvenient time. As a workaround, allow new
3799 * Extended Listen operation to be started.
3801 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3802 p2p->ext_listen_only = 0;
3803 p2p_set_state(p2p, P2P_IDLE);
3806 if (p2p->state != P2P_IDLE) {
3807 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3811 p2p_dbg(p2p, "Extended Listen timeout");
3812 p2p->ext_listen_only = 1;
3813 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3814 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3815 p2p->ext_listen_only = 0;
3820 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3821 unsigned int interval)
3823 if (period > 65535 || interval > 65535 || period > interval ||
3824 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3825 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3830 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3832 if (interval == 0) {
3833 p2p_dbg(p2p, "Disabling Extended Listen Timing");
3834 p2p->ext_listen_period = 0;
3835 p2p->ext_listen_interval = 0;
3839 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3841 p2p->ext_listen_period = period;
3842 p2p->ext_listen_interval = interval;
3843 p2p->ext_listen_interval_sec = interval / 1000;
3844 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3846 eloop_register_timeout(p2p->ext_listen_interval_sec,
3847 p2p->ext_listen_interval_usec,
3848 p2p_ext_listen_timeout, p2p, NULL);
3854 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3855 const u8 *ie, size_t ie_len)
3857 struct p2p_message msg;
3859 if (bssid == NULL || ie == NULL)
3862 os_memset(&msg, 0, sizeof(msg));
3863 if (p2p_parse_ies(ie, ie_len, &msg))
3865 if (msg.minor_reason_code == NULL) {
3866 p2p_parse_free(&msg);
3870 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
3871 " reason_code=%u minor_reason_code=%u",
3872 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3874 p2p_parse_free(&msg);
3878 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3879 const u8 *ie, size_t ie_len)
3881 struct p2p_message msg;
3883 if (bssid == NULL || ie == NULL)
3886 os_memset(&msg, 0, sizeof(msg));
3887 if (p2p_parse_ies(ie, ie_len, &msg))
3889 if (msg.minor_reason_code == NULL) {
3890 p2p_parse_free(&msg);
3894 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
3895 " reason_code=%u minor_reason_code=%u",
3896 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3898 p2p_parse_free(&msg);
3902 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3905 p2p_dbg(p2p, "Managed P2P Device operations enabled");
3906 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3908 p2p_dbg(p2p, "Managed P2P Device operations disabled");
3909 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3914 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3916 if (p2p_channel_to_freq(reg_class, channel) < 0)
3919 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
3920 reg_class, channel);
3921 p2p->cfg->reg_class = reg_class;
3922 p2p->cfg->channel = channel;
3928 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3930 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
3931 if (postfix == NULL) {
3932 p2p->cfg->ssid_postfix_len = 0;
3935 if (len > sizeof(p2p->cfg->ssid_postfix))
3937 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3938 p2p->cfg->ssid_postfix_len = len;
3943 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3946 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
3949 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
3950 op_reg_class, op_channel);
3951 p2p->cfg->op_reg_class = op_reg_class;
3952 p2p->cfg->op_channel = op_channel;
3953 p2p->cfg->cfg_op_channel = cfg_op_channel;
3958 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3959 const struct p2p_channel *pref_chan)
3961 struct p2p_channel *n;
3964 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3967 os_memcpy(n, pref_chan,
3968 num_pref_chan * sizeof(struct p2p_channel));
3972 os_free(p2p->cfg->pref_chan);
3973 p2p->cfg->pref_chan = n;
3974 p2p->cfg->num_pref_chan = num_pref_chan;
3980 int p2p_set_no_go_freq(struct p2p_data *p2p,
3981 const struct wpa_freq_range_list *list)
3983 struct wpa_freq_range *tmp;
3985 if (list == NULL || list->num == 0) {
3986 os_free(p2p->no_go_freq.range);
3987 p2p->no_go_freq.range = NULL;
3988 p2p->no_go_freq.num = 0;
3992 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
3995 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
3996 os_free(p2p->no_go_freq.range);
3997 p2p->no_go_freq.range = tmp;
3998 p2p->no_go_freq.num = list->num;
3999 p2p_dbg(p2p, "Updated no GO chan list");
4005 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4008 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4009 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4011 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4016 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4019 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4022 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4027 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4029 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4030 if (is_zero_ether_addr(p2p->peer_filter))
4031 p2p_dbg(p2p, "Disable peer filter");
4033 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4034 MAC2STR(p2p->peer_filter));
4038 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4040 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4041 if (p2p->cross_connect == enabled)
4043 p2p->cross_connect = enabled;
4044 /* TODO: may need to tear down any action group where we are GO(?) */
4048 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4050 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4053 if (dev->oper_freq <= 0)
4055 return dev->oper_freq;
4059 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4061 p2p_dbg(p2p, "Intra BSS distribution %s",
4062 enabled ? "enabled" : "disabled");
4063 p2p->cfg->p2p_intra_bss = enabled;
4067 void p2p_update_channel_list(struct p2p_data *p2p,
4068 const struct p2p_channels *chan,
4069 const struct p2p_channels *cli_chan)
4071 p2p_dbg(p2p, "Update channel list");
4072 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4073 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4074 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4075 sizeof(struct p2p_channels));
4076 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4080 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4081 const u8 *src, const u8 *bssid, const u8 *buf,
4082 size_t len, unsigned int wait_time)
4084 if (p2p->p2p_scan_running) {
4085 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4086 if (p2p->after_scan_tx) {
4087 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4088 os_free(p2p->after_scan_tx);
4090 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4092 if (p2p->after_scan_tx == NULL)
4094 p2p->after_scan_tx->freq = freq;
4095 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4096 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4097 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4098 p2p->after_scan_tx->len = len;
4099 p2p->after_scan_tx->wait_time = wait_time;
4100 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4104 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4105 buf, len, wait_time);
4109 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4112 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4113 freq_24, freq_5, freq_overall);
4114 p2p->best_freq_24 = freq_24;
4115 p2p->best_freq_5 = freq_5;
4116 p2p->best_freq_overall = freq_overall;
4120 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4122 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4123 p2p->own_freq_preference = freq;
4127 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4129 if (p2p == NULL || p2p->go_neg_peer == NULL)
4131 return p2p->go_neg_peer->info.p2p_device_addr;
4135 const struct p2p_peer_info *
4136 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4138 struct p2p_device *dev;
4141 dev = p2p_get_device(p2p, addr);
4146 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4152 dev = dl_list_first(&dev->list,
4155 if (&dev->list == &p2p->devices)
4157 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4160 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4163 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4164 dev = dl_list_first(&dev->list,
4167 if (&dev->list == &p2p->devices)
4176 int p2p_in_progress(struct p2p_data *p2p)
4180 if (p2p->state == P2P_SEARCH)
4182 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4186 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4190 p2p->go_timeout = go_timeout;
4191 p2p->client_timeout = client_timeout;
4196 #ifdef CONFIG_WIFI_DISPLAY
4198 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4201 struct p2p_group *group;
4203 for (g = 0; g < p2p->num_groups; g++) {
4204 group = p2p->groups[g];
4205 p2p_group_force_beacon_update_ies(group);
4210 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4212 wpabuf_free(p2p->wfd_ie_beacon);
4213 p2p->wfd_ie_beacon = ie;
4214 p2p_update_wfd_ie_groups(p2p);
4219 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4221 wpabuf_free(p2p->wfd_ie_probe_req);
4222 p2p->wfd_ie_probe_req = ie;
4227 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4229 wpabuf_free(p2p->wfd_ie_probe_resp);
4230 p2p->wfd_ie_probe_resp = ie;
4231 p2p_update_wfd_ie_groups(p2p);
4236 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4238 wpabuf_free(p2p->wfd_ie_assoc_req);
4239 p2p->wfd_ie_assoc_req = ie;
4244 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4246 wpabuf_free(p2p->wfd_ie_invitation);
4247 p2p->wfd_ie_invitation = ie;
4252 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4254 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4255 p2p->wfd_ie_prov_disc_req = ie;
4260 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4262 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4263 p2p->wfd_ie_prov_disc_resp = ie;
4268 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4270 wpabuf_free(p2p->wfd_ie_go_neg);
4271 p2p->wfd_ie_go_neg = ie;
4276 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4278 wpabuf_free(p2p->wfd_dev_info);
4280 p2p->wfd_dev_info = wpabuf_dup(elem);
4281 if (p2p->wfd_dev_info == NULL)
4284 p2p->wfd_dev_info = NULL;
4290 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4292 wpabuf_free(p2p->wfd_assoc_bssid);
4294 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4295 if (p2p->wfd_assoc_bssid == NULL)
4298 p2p->wfd_assoc_bssid = NULL;
4304 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4305 const struct wpabuf *elem)
4307 wpabuf_free(p2p->wfd_coupled_sink_info);
4309 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4310 if (p2p->wfd_coupled_sink_info == NULL)
4313 p2p->wfd_coupled_sink_info = NULL;
4318 #endif /* CONFIG_WIFI_DISPLAY */
4321 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4324 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4327 p2p->min_disc_int = min_disc_int;
4328 p2p->max_disc_int = max_disc_int;
4329 p2p->max_disc_tu = max_disc_tu;
4330 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4331 min_disc_int, max_disc_int, max_disc_tu);
4337 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4342 if (!p2p->cfg->debug_print)
4346 vsnprintf(buf, sizeof(buf), fmt, ap);
4347 buf[sizeof(buf) - 1] = '\0';
4349 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4353 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4358 if (!p2p->cfg->debug_print)
4362 vsnprintf(buf, sizeof(buf), fmt, ap);
4363 buf[sizeof(buf) - 1] = '\0';
4365 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4369 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4374 if (!p2p->cfg->debug_print)
4378 vsnprintf(buf, sizeof(buf), fmt, ap);
4379 buf[sizeof(buf) - 1] = '\0';
4381 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4385 #ifdef CONFIG_WPS_NFC
4387 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4389 const u8 *go_dev_addr,
4390 const u8 *ssid, size_t ssid_len)
4393 u8 op_class, channel;
4394 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4396 buf = wpabuf_alloc(1000);
4400 op_class = p2p->cfg->reg_class;
4401 channel = p2p->cfg->channel;
4403 p2p_buf_add_capability(buf, p2p->dev_capab &
4404 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4405 p2p_buf_add_device_info(buf, p2p, NULL);
4407 if (p2p->num_groups > 0) {
4408 role = P2P_GO_IN_A_GROUP;
4409 p2p_freq_to_channel(p2p_group_get_freq(p2p->groups[0]),
4410 &op_class, &channel);
4411 } else if (client_freq > 0) {
4412 role = P2P_CLIENT_IN_A_GROUP;
4413 p2p_freq_to_channel(client_freq, &op_class, &channel);
4416 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4419 if (p2p->num_groups > 0) {
4420 /* Limit number of clients to avoid very long message */
4421 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4422 p2p_group_buf_add_id(p2p->groups[0], buf);
4423 } else if (client_freq > 0 &&
4424 go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
4425 ssid && ssid_len > 0) {
4427 * Add the optional P2P Group ID to indicate in which group this
4428 * device is a P2P Client.
4430 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
4437 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4439 const u8 *go_dev_addr,
4440 const u8 *ssid, size_t ssid_len)
4442 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4447 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4449 const u8 *go_dev_addr,
4450 const u8 *ssid, size_t ssid_len)
4452 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4457 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4458 struct p2p_nfc_params *params)
4460 struct p2p_message msg;
4461 struct p2p_device *dev;
4462 const u8 *p2p_dev_addr;
4464 enum p2p_role_indication role;
4466 params->next_step = NO_ACTION;
4468 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4469 params->p2p_attr, params->p2p_len, &msg)) {
4470 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4471 p2p_parse_free(&msg);
4475 if (msg.p2p_device_addr)
4476 p2p_dev_addr = msg.p2p_device_addr;
4477 else if (msg.device_id)
4478 p2p_dev_addr = msg.device_id;
4480 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4481 p2p_parse_free(&msg);
4485 if (msg.oob_dev_password) {
4486 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4487 msg.oob_dev_password_len);
4488 params->oob_dev_pw_len = msg.oob_dev_password_len;
4491 dev = p2p_create_device(p2p, p2p_dev_addr);
4493 p2p_parse_free(&msg);
4497 params->peer = &dev->info;
4499 os_get_reltime(&dev->last_seen);
4500 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4501 p2p_copy_wps_info(p2p, dev, 0, &msg);
4503 if (!msg.oob_go_neg_channel) {
4504 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4508 if (msg.oob_go_neg_channel[3] == 0 &&
4509 msg.oob_go_neg_channel[4] == 0)
4512 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4513 msg.oob_go_neg_channel[4]);
4515 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4518 role = msg.oob_go_neg_channel[5];
4520 if (role == P2P_GO_IN_A_GROUP) {
4521 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
4522 params->go_freq = freq;
4523 } else if (role == P2P_CLIENT_IN_A_GROUP) {
4524 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
4526 params->go_freq = freq;
4528 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4529 dev->oob_go_neg_freq = freq;
4531 if (!params->sel && role != P2P_GO_IN_A_GROUP) {
4532 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4535 p2p_dbg(p2p, "Own listen channel not known");
4538 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4539 dev->oob_go_neg_freq = freq;
4543 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
4544 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
4545 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
4546 params->go_ssid_len);
4549 p2p_parse_free(&msg);
4551 if (dev->flags & P2P_DEV_USER_REJECTED) {
4552 p2p_dbg(p2p, "Do not report rejected device");
4556 if (!(dev->flags & P2P_DEV_REPORTED)) {
4557 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4558 !(dev->flags & P2P_DEV_REPORTED_ONCE));
4559 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4562 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
4563 params->next_step = BOTH_GO;
4564 else if (role == P2P_GO_IN_A_GROUP)
4565 params->next_step = JOIN_GROUP;
4566 else if (role == P2P_CLIENT_IN_A_GROUP) {
4567 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4568 params->next_step = PEER_CLIENT;
4569 } else if (p2p->num_groups > 0)
4570 params->next_step = AUTH_JOIN;
4571 else if (params->sel)
4572 params->next_step = INIT_GO_NEG;
4574 params->next_step = RESP_GO_NEG;
4580 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4582 const u8 *own_interface_addr)
4585 p2p->authorized_oob_dev_pw_id = dev_pw_id;
4586 if (dev_pw_id == 0) {
4587 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4591 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4594 p2p->go_intent = go_intent;
4595 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4598 #endif /* CONFIG_WPS_NFC */