3 * Copyright (c) 2009-2010, Atheros Communications
4 * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
6 * This software may be distributed under the terms of the BSD license.
7 * See README for more details.
14 #include "common/ieee802_11_common.h"
15 #include "common/ieee802_11_defs.h"
16 #include "common/wpa_ctrl.h"
17 #include "wps/wps_i.h"
19 #include "ap/hostapd.h"
20 #include "ap/ap_config.h"
21 #include "ap/sta_info.h"
22 #include "ap/ap_drv_ops.h"
23 #include "ap/wps_hostapd.h"
24 #include "ap/p2p_hostapd.h"
25 #include "eapol_supp/eapol_supp_sm.h"
26 #include "rsn_supp/wpa.h"
27 #include "wpa_supplicant_i.h"
30 #include "config_ssid.h"
35 #include "offchannel.h"
36 #include "wps_supplicant.h"
37 #include "p2p_supplicant.h"
38 #include "wifi_display.h"
42 * How many times to try to scan to find the GO before giving up on join
45 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
47 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
49 #ifndef P2P_MAX_CLIENT_IDLE
51 * How many seconds to try to reconnect to the GO when connection in P2P client
54 #define P2P_MAX_CLIENT_IDLE 10
55 #endif /* P2P_MAX_CLIENT_IDLE */
57 #ifndef P2P_MAX_INITIAL_CONN_WAIT
59 * How many seconds to wait for initial 4-way handshake to get completed after
60 * WPS provisioning step or after the re-invocation of a persistent group on a
63 #define P2P_MAX_INITIAL_CONN_WAIT 10
64 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
66 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
68 * How many seconds to wait for initial 4-way handshake to get completed after
69 * WPS provisioning step on the GO. This controls the extra time the P2P
70 * operation is considered to be in progress (e.g., to delay other scans) after
71 * WPS provisioning has been completed on the GO during group formation.
73 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
74 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
76 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
78 * How many seconds to wait for initial 4-way handshake to get completed after
79 * re-invocation of a persistent group on the GO when the client is expected
80 * to connect automatically (no user interaction).
82 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
83 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
85 #define P2P_MGMT_DEVICE_PREFIX "p2p-dev-"
87 enum p2p_group_removal_reason {
88 P2P_GROUP_REMOVAL_UNKNOWN,
89 P2P_GROUP_REMOVAL_SILENT,
90 P2P_GROUP_REMOVAL_FORMATION_FAILED,
91 P2P_GROUP_REMOVAL_REQUESTED,
92 P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
93 P2P_GROUP_REMOVAL_UNAVAILABLE,
94 P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
95 P2P_GROUP_REMOVAL_PSK_FAILURE,
96 P2P_GROUP_REMOVAL_FREQ_CONFLICT
100 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
101 static struct wpa_supplicant *
102 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
104 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
105 const u8 *ssid, size_t ssid_len);
106 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
107 const u8 *ssid, size_t ssid_len);
108 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
109 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
110 const u8 *dev_addr, enum p2p_wps_method wps_method,
111 int auto_join, int freq,
112 const u8 *ssid, size_t ssid_len);
113 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
114 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
115 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
116 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
117 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
119 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
120 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
122 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
123 static void wpas_stop_listen(void *ctx);
124 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
125 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
129 * Get the number of concurrent channels that the HW can operate, but that are
130 * currently not in use by any of the wpa_supplicant interfaces.
132 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
137 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
141 num = get_shared_radio_freqs(wpa_s, freqs,
142 wpa_s->num_multichan_concurrent);
145 unused = wpa_s->num_multichan_concurrent - num;
146 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
152 * Get the frequencies that are currently in use by one or more of the virtual
153 * interfaces, and that are also valid for P2P operation.
156 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
157 struct wpa_used_freq_data *p2p_freqs,
160 struct wpa_used_freq_data *freqs;
161 unsigned int num, i, j;
163 freqs = os_calloc(wpa_s->num_multichan_concurrent,
164 sizeof(struct wpa_used_freq_data));
168 num = get_shared_radio_freqs_data(wpa_s, freqs,
169 wpa_s->num_multichan_concurrent);
171 os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
173 for (i = 0, j = 0; i < num && j < len; i++) {
174 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
175 p2p_freqs[j++] = freqs[i];
180 dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
186 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
189 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
191 if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
192 freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
193 wpas_p2p_num_unused_channels(wpa_s) > 0) {
194 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
198 p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
202 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
203 struct wpa_scan_results *scan_res)
207 if (wpa_s->p2p_scan_work) {
208 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
209 wpa_s->p2p_scan_work = NULL;
210 radio_work_done(work);
213 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
216 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
217 (int) scan_res->num);
219 for (i = 0; i < scan_res->num; i++) {
220 struct wpa_scan_res *bss = scan_res->res[i];
221 struct os_reltime time_tmp_age, entry_ts;
225 time_tmp_age.sec = bss->age / 1000;
226 time_tmp_age.usec = (bss->age % 1000) * 1000;
227 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
229 ies = (const u8 *) (bss + 1);
230 ies_len = bss->ie_len;
231 if (bss->beacon_ie_len > 0 &&
232 !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
233 wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
234 wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
235 MACSTR, MAC2STR(bss->bssid));
237 ies_len = bss->beacon_ie_len;
241 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
242 bss->freq, &entry_ts, bss->level,
247 p2p_scan_res_handled(wpa_s->global->p2p);
251 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
253 struct wpa_supplicant *wpa_s = work->wpa_s;
254 struct wpa_driver_scan_params *params = work->ctx;
258 if (!work->started) {
259 wpa_scan_free_params(params);
263 wpa_s->p2p_scan_work = NULL;
267 ret = wpa_drv_scan(wpa_s, params);
268 wpa_scan_free_params(params);
271 radio_work_done(work);
272 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
276 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
277 os_get_reltime(&wpa_s->scan_trigger_time);
278 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
279 wpa_s->own_scan_requested = 1;
280 wpa_s->p2p_scan_work = work;
284 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
287 if (wpa_s->global->p2p_24ghz_social_channels &&
288 (freq == 2412 || freq == 2437 || freq == 2462)) {
290 * Search all social channels regardless of whether these have
291 * been disabled for P2P operating channel use to avoid missing
296 return p2p_supported_freq(wpa_s->global->p2p, freq);
300 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
301 unsigned int num_req_dev_types,
302 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
304 struct wpa_supplicant *wpa_s = ctx;
305 struct wpa_driver_scan_params *params = NULL;
306 struct wpabuf *wps_ie, *ies;
307 unsigned int num_channels = 0;
308 int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
312 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
315 if (wpa_s->p2p_scan_work) {
316 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
320 params = os_zalloc(sizeof(*params));
324 /* P2P Wildcard SSID */
325 params->num_ssids = 1;
326 n = os_malloc(P2P_WILDCARD_SSID_LEN);
329 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
330 params->ssids[0].ssid = n;
331 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
333 wpa_s->wps->dev.p2p = 1;
334 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
335 wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
336 num_req_dev_types, req_dev_types);
340 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
341 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
346 wpabuf_put_buf(ies, wps_ie);
349 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
351 params->p2p_probe = 1;
352 n = os_malloc(wpabuf_len(ies));
357 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
358 params->extra_ies = n;
359 params->extra_ies_len = wpabuf_len(ies);
363 case P2P_SCAN_SOCIAL:
364 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
366 if (params->freqs == NULL)
368 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
369 if (wpas_p2p_search_social_channel(
370 wpa_s, social_channels_freq[i]))
371 params->freqs[num_channels++] =
372 social_channels_freq[i];
374 params->freqs[num_channels++] = 0;
378 case P2P_SCAN_SOCIAL_PLUS_ONE:
379 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
381 if (params->freqs == NULL)
383 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
384 if (wpas_p2p_search_social_channel(
385 wpa_s, social_channels_freq[i]))
386 params->freqs[num_channels++] =
387 social_channels_freq[i];
389 if (p2p_supported_freq(wpa_s->global->p2p, freq))
390 params->freqs[num_channels++] = freq;
391 params->freqs[num_channels++] = 0;
395 radio_remove_works(wpa_s, "p2p-scan", 0);
396 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
402 wpa_scan_free_params(params);
407 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
409 switch (p2p_group_interface) {
410 case P2P_GROUP_INTERFACE_PENDING:
411 return WPA_IF_P2P_GROUP;
412 case P2P_GROUP_INTERFACE_GO:
413 return WPA_IF_P2P_GO;
414 case P2P_GROUP_INTERFACE_CLIENT:
415 return WPA_IF_P2P_CLIENT;
418 return WPA_IF_P2P_GROUP;
422 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
424 size_t ssid_len, int *go)
428 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
429 for (s = wpa_s->conf->ssid; s; s = s->next) {
430 if (s->disabled != 0 || !s->p2p_group ||
431 s->ssid_len != ssid_len ||
432 os_memcmp(ssid, s->ssid, ssid_len) != 0)
434 if (s->mode == WPAS_MODE_P2P_GO &&
435 s != wpa_s->current_ssid)
438 *go = s->mode == WPAS_MODE_P2P_GO;
447 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
449 struct wpa_supplicant *wpa_s = eloop_ctx;
450 wpa_printf(MSG_DEBUG,
451 "P2P: Complete previously requested removal of %s",
453 wpas_p2p_disconnect(wpa_s);
457 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
458 struct wpa_supplicant *calling_wpa_s)
460 if (calling_wpa_s == wpa_s && wpa_s &&
461 wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
463 * The calling wpa_s instance is going to be removed. Do that
464 * from an eloop callback to keep the instance available until
465 * the caller has returned. This my be needed, e.g., to provide
466 * control interface responses on the per-interface socket.
468 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
474 return wpas_p2p_disconnect(wpa_s);
478 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
479 enum p2p_group_removal_reason removal_reason)
481 struct wpa_ssid *ssid;
485 ssid = wpa_s->current_ssid;
488 * The current SSID was not known, but there may still be a
489 * pending P2P group interface waiting for provisioning or a
490 * P2P group that is trying to reconnect.
492 ssid = wpa_s->conf->ssid;
494 if (ssid->p2p_group && ssid->disabled != 2)
499 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
501 wpa_printf(MSG_ERROR, "P2P: P2P group interface "
506 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
508 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
509 (ssid && ssid->mode == WPAS_MODE_INFRA)) {
510 wpa_s->reassociate = 0;
511 wpa_s->disconnected = 1;
516 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
517 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
519 if (os_strcmp(gtype, "client") == 0) {
520 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
521 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
523 wpa_printf(MSG_DEBUG,
524 "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
525 removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
526 eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
531 if (wpa_s->cross_connect_in_use) {
532 wpa_s->cross_connect_in_use = 0;
533 wpa_msg_global(wpa_s->parent, MSG_INFO,
534 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
535 wpa_s->ifname, wpa_s->cross_connect_uplink);
537 switch (removal_reason) {
538 case P2P_GROUP_REMOVAL_REQUESTED:
539 reason = " reason=REQUESTED";
541 case P2P_GROUP_REMOVAL_FORMATION_FAILED:
542 reason = " reason=FORMATION_FAILED";
544 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
545 reason = " reason=IDLE";
547 case P2P_GROUP_REMOVAL_UNAVAILABLE:
548 reason = " reason=UNAVAILABLE";
550 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
551 reason = " reason=GO_ENDING_SESSION";
553 case P2P_GROUP_REMOVAL_PSK_FAILURE:
554 reason = " reason=PSK_FAILURE";
556 case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
557 reason = " reason=FREQ_CONFLICT";
563 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
564 wpa_msg_global(wpa_s->parent, MSG_INFO,
565 P2P_EVENT_GROUP_REMOVED "%s %s%s",
566 wpa_s->ifname, gtype, reason);
569 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
570 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
571 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
572 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
573 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
574 wpa_s->parent, NULL) > 0) {
575 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
577 wpa_s->p2p_in_provisioning = 0;
580 wpa_s->p2p_in_invitation = 0;
583 * Make sure wait for the first client does not remain active after the
584 * group has been removed.
586 wpa_s->global->p2p_go_wait_client.sec = 0;
588 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
589 struct wpa_global *global;
591 enum wpa_driver_if_type type;
592 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
594 global = wpa_s->global;
595 ifname = os_strdup(wpa_s->ifname);
596 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
597 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
598 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
599 wpa_s = global->ifaces;
601 wpa_drv_if_remove(wpa_s, type, ifname);
606 if (!wpa_s->p2p_go_group_formation_completed) {
607 wpa_s->global->p2p_group_formation = NULL;
608 wpa_s->p2p_in_provisioning = 0;
611 wpa_s->show_group_started = 0;
612 os_free(wpa_s->go_params);
613 wpa_s->go_params = NULL;
615 os_free(wpa_s->p2p_group_common_freqs);
616 wpa_s->p2p_group_common_freqs = NULL;
617 wpa_s->p2p_group_common_freqs_num = 0;
619 wpa_s->waiting_presence_resp = 0;
621 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
622 if (ssid && (ssid->p2p_group ||
623 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
624 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
626 if (ssid == wpa_s->current_ssid) {
627 wpa_sm_set_config(wpa_s->wpa, NULL);
628 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
629 wpa_s->current_ssid = NULL;
632 * Networks objects created during any P2P activities are not
633 * exposed out as they might/will confuse certain non-P2P aware
634 * applications since these network objects won't behave like
637 * Likewise, we don't send out network removed signals for such
640 wpa_config_remove_network(wpa_s->conf, id);
641 wpa_supplicant_clear_status(wpa_s);
642 wpa_supplicant_cancel_sched_scan(wpa_s);
644 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
648 wpa_supplicant_ap_deinit(wpa_s);
650 wpa_drv_deinit_p2p_cli(wpa_s);
656 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
658 const u8 *ssid, size_t ssid_len)
666 if (wpa_s->go_params)
667 bssid = wpa_s->go_params->peer_interface_addr;
669 bssid = wpa_s->bssid;
671 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
672 if (bss == NULL && wpa_s->go_params &&
673 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
674 bss = wpa_bss_get_p2p_dev_addr(
675 wpa_s, wpa_s->go_params->peer_device_addr);
677 u8 iface_addr[ETH_ALEN];
678 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
680 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
683 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
684 "group is persistent - BSS " MACSTR " not found",
689 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
691 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
694 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
695 "group is persistent - BSS " MACSTR
696 " did not include P2P IE", MAC2STR(bssid));
697 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
698 (u8 *) (bss + 1), bss->ie_len);
699 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
700 ((u8 *) bss + 1) + bss->ie_len,
705 group_capab = p2p_get_group_capab(p2p);
706 addr = p2p_get_go_dev_addr(p2p);
707 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
708 "group_capab=0x%x", group_capab);
710 os_memcpy(go_dev_addr, addr, ETH_ALEN);
711 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
714 os_memset(go_dev_addr, 0, ETH_ALEN);
717 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
718 "go_dev_addr=" MACSTR,
719 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
721 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
725 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
726 struct wpa_ssid *ssid,
727 const u8 *go_dev_addr)
732 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
733 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
734 for (s = wpa_s->conf->ssid; s; s = s->next) {
735 if (s->disabled == 2 &&
736 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
737 s->ssid_len == ssid->ssid_len &&
738 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
743 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
745 if (ssid->passphrase && !s->passphrase)
747 else if (ssid->passphrase && s->passphrase &&
748 os_strcmp(ssid->passphrase, s->passphrase) != 0)
751 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
754 s = wpa_config_add_network(wpa_s->conf);
759 * Instead of network_added we emit persistent_group_added
760 * notification. Also to keep the defense checks in
761 * persistent_group obj registration method, we set the
762 * relevant flags in s to designate it as a persistent group.
765 s->p2p_persistent_group = 1;
766 wpas_notify_persistent_group_added(wpa_s, s);
767 wpa_config_set_network_defaults(s);
771 s->p2p_persistent_group = 1;
774 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
775 s->mode = ssid->mode;
776 s->auth_alg = WPA_AUTH_ALG_OPEN;
777 s->key_mgmt = WPA_KEY_MGMT_PSK;
778 s->proto = WPA_PROTO_RSN;
779 s->pairwise_cipher = WPA_CIPHER_CCMP;
781 if (ssid->passphrase) {
782 os_free(s->passphrase);
783 s->passphrase = os_strdup(ssid->passphrase);
787 os_memcpy(s->psk, ssid->psk, 32);
789 if (s->passphrase && !s->psk_set)
790 wpa_config_update_psk(s);
791 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
793 s->ssid = os_malloc(ssid->ssid_len);
796 s->ssid_len = ssid->ssid_len;
797 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
799 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
800 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
801 wpa_s->global->add_psk = NULL;
805 if (changed && wpa_s->conf->update_config &&
806 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
807 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
814 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
817 struct wpa_ssid *ssid, *s;
822 ssid = wpa_s->current_ssid;
823 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
824 !ssid->p2p_persistent_group)
827 for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
828 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
831 if (s->ssid_len == ssid->ssid_len &&
832 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
839 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
840 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
844 if (i == s->num_p2p_clients - 1)
845 return; /* already the most recent entry */
847 /* move the entry to mark it most recent */
848 os_memmove(s->p2p_client_list + i * ETH_ALEN,
849 s->p2p_client_list + (i + 1) * ETH_ALEN,
850 (s->num_p2p_clients - i - 1) * ETH_ALEN);
851 os_memcpy(s->p2p_client_list +
852 (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
857 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
858 n = os_realloc_array(s->p2p_client_list,
859 s->num_p2p_clients + 1, ETH_ALEN);
862 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
863 s->p2p_client_list = n;
864 s->num_p2p_clients++;
865 } else if (!found && s->p2p_client_list) {
866 /* Not enough room for an additional entry - drop the oldest
868 os_memmove(s->p2p_client_list,
869 s->p2p_client_list + ETH_ALEN,
870 (s->num_p2p_clients - 1) * ETH_ALEN);
871 os_memcpy(s->p2p_client_list +
872 (s->num_p2p_clients - 1) * ETH_ALEN,
876 if (wpa_s->parent->conf->update_config &&
877 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
878 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
882 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
883 int go, struct wpa_ssid *ssid, int freq,
884 const u8 *psk, const char *passphrase,
885 const u8 *go_dev_addr, int persistent,
888 const char *ssid_txt;
892 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
897 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
901 if (passphrase && passphrase[0] == '\0')
905 * Include PSK/passphrase only in the control interface message and
906 * leave it out from the debug log entry.
908 wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
909 P2P_EVENT_GROUP_STARTED
910 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
912 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
913 psk ? " psk=" : "", psk_txt,
914 passphrase ? " passphrase=\"" : "",
915 passphrase ? passphrase : "",
916 passphrase ? "\"" : "",
917 MAC2STR(go_dev_addr),
918 persistent ? " [PERSISTENT]" : "", extra);
919 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
920 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
921 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
922 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
927 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
930 struct wpa_ssid *ssid;
933 u8 go_dev_addr[ETH_ALEN];
937 * This callback is likely called for the main interface. Update wpa_s
938 * to use the group interface if a new interface was created for the
941 if (wpa_s->global->p2p_group_formation)
942 wpa_s = wpa_s->global->p2p_group_formation;
943 if (wpa_s->p2p_go_group_formation_completed) {
944 wpa_s->global->p2p_group_formation = NULL;
945 wpa_s->p2p_in_provisioning = 0;
947 wpa_s->p2p_in_invitation = 0;
948 wpa_s->group_formation_reported = 1;
951 wpa_msg_global(wpa_s->parent, MSG_INFO,
952 P2P_EVENT_GROUP_FORMATION_FAILURE);
953 wpas_p2p_group_delete(wpa_s,
954 P2P_GROUP_REMOVAL_FORMATION_FAILED);
958 wpa_msg_global(wpa_s->parent, MSG_INFO,
959 P2P_EVENT_GROUP_FORMATION_SUCCESS);
961 ssid = wpa_s->current_ssid;
962 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
963 ssid->mode = WPAS_MODE_P2P_GO;
964 p2p_group_notif_formation_done(wpa_s->p2p_group);
965 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
970 client = ssid->mode == WPAS_MODE_INFRA;
971 if (ssid->mode == WPAS_MODE_P2P_GO) {
972 persistent = ssid->p2p_persistent_group;
973 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
976 persistent = wpas_p2p_persistent_group(wpa_s,
981 client = wpa_s->p2p_group_interface ==
982 P2P_GROUP_INTERFACE_CLIENT;
983 os_memset(go_dev_addr, 0, ETH_ALEN);
986 wpa_s->show_group_started = 0;
989 * Indicate event only after successfully completed 4-way
990 * handshake, i.e., when the interface is ready for data
993 wpa_s->show_group_started = 1;
995 wpas_p2p_group_started(wpa_s, 1, ssid,
996 ssid ? ssid->frequency : 0,
997 ssid && ssid->passphrase == NULL &&
998 ssid->psk_set ? ssid->psk : NULL,
999 ssid ? ssid->passphrase : NULL,
1000 go_dev_addr, persistent, "");
1001 wpas_p2p_cross_connect_setup(wpa_s);
1002 wpas_p2p_set_group_idle_timeout(wpa_s);
1006 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1009 os_free(wpa_s->global->add_psk);
1010 wpa_s->global->add_psk = NULL;
1012 if (network_id < 0 && ssid)
1013 network_id = ssid->id;
1015 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1016 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1021 struct send_action_work {
1027 unsigned int wait_time;
1032 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1035 struct wpa_supplicant *wpa_s = eloop_ctx;
1037 if (!wpa_s->p2p_send_action_work)
1040 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1041 os_free(wpa_s->p2p_send_action_work->ctx);
1042 radio_work_done(wpa_s->p2p_send_action_work);
1043 wpa_s->p2p_send_action_work = NULL;
1047 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1049 if (wpa_s->p2p_send_action_work) {
1050 struct send_action_work *awork;
1051 awork = wpa_s->p2p_send_action_work->ctx;
1052 if (awork->wait_time == 0) {
1054 radio_work_done(wpa_s->p2p_send_action_work);
1055 wpa_s->p2p_send_action_work = NULL;
1058 * In theory, this should not be needed, but number of
1059 * places in the P2P code is still using non-zero wait
1060 * time for the last Action frame in the sequence and
1061 * some of these do not call send_action_done().
1063 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1065 eloop_register_timeout(
1066 0, awork->wait_time * 1000,
1067 wpas_p2p_send_action_work_timeout,
1074 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1076 const u8 *dst, const u8 *src,
1078 const u8 *data, size_t data_len,
1079 enum offchannel_send_action_result
1082 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1084 wpas_p2p_action_tx_clear(wpa_s);
1086 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1090 case OFFCHANNEL_SEND_ACTION_SUCCESS:
1091 res = P2P_SEND_ACTION_SUCCESS;
1093 case OFFCHANNEL_SEND_ACTION_NO_ACK:
1094 res = P2P_SEND_ACTION_NO_ACK;
1096 case OFFCHANNEL_SEND_ACTION_FAILED:
1097 res = P2P_SEND_ACTION_FAILED;
1101 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1103 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1104 wpa_s->pending_pd_before_join &&
1105 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1106 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1107 wpa_s->p2p_fallback_to_go_neg) {
1108 wpa_s->pending_pd_before_join = 0;
1109 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1110 "during p2p_connect-auto");
1111 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1117 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1119 struct wpa_supplicant *wpa_s = work->wpa_s;
1120 struct send_action_work *awork = work->ctx;
1123 if (work->started) {
1124 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1126 wpa_s->p2p_send_action_work = NULL;
1127 offchannel_send_action_done(wpa_s);
1133 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1134 awork->bssid, awork->buf, awork->len,
1136 wpas_p2p_send_action_tx_status, 1) < 0) {
1138 radio_work_done(work);
1141 wpa_s->p2p_send_action_work = work;
1145 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1146 unsigned int freq, const u8 *dst,
1147 const u8 *src, const u8 *bssid, const u8 *buf,
1148 size_t len, unsigned int wait_time)
1150 struct send_action_work *awork;
1152 if (wpa_s->p2p_send_action_work) {
1153 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1157 awork = os_zalloc(sizeof(*awork) + len);
1162 os_memcpy(awork->dst, dst, ETH_ALEN);
1163 os_memcpy(awork->src, src, ETH_ALEN);
1164 os_memcpy(awork->bssid, bssid, ETH_ALEN);
1166 awork->wait_time = wait_time;
1167 os_memcpy(awork->buf, buf, len);
1169 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1170 wpas_send_action_cb, awork) < 0) {
1179 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1180 const u8 *src, const u8 *bssid, const u8 *buf,
1181 size_t len, unsigned int wait_time)
1183 struct wpa_supplicant *wpa_s = ctx;
1184 int listen_freq = -1, send_freq = -1;
1186 if (wpa_s->p2p_listen_work)
1187 listen_freq = wpa_s->p2p_listen_work->freq;
1188 if (wpa_s->p2p_send_action_work)
1189 send_freq = wpa_s->p2p_send_action_work->freq;
1190 if (listen_freq != (int) freq && send_freq != (int) freq) {
1191 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1192 listen_freq, send_freq);
1193 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1197 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1198 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1200 wpas_p2p_send_action_tx_status, 1);
1204 static void wpas_send_action_done(void *ctx)
1206 struct wpa_supplicant *wpa_s = ctx;
1208 if (wpa_s->p2p_send_action_work) {
1209 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1211 os_free(wpa_s->p2p_send_action_work->ctx);
1212 radio_work_done(wpa_s->p2p_send_action_work);
1213 wpa_s->p2p_send_action_work = NULL;
1216 offchannel_send_action_done(wpa_s);
1220 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1221 struct p2p_go_neg_results *params)
1223 if (wpa_s->go_params == NULL) {
1224 wpa_s->go_params = os_malloc(sizeof(*params));
1225 if (wpa_s->go_params == NULL)
1228 os_memcpy(wpa_s->go_params, params, sizeof(*params));
1233 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1234 struct p2p_go_neg_results *res)
1236 wpa_s->group_formation_reported = 0;
1237 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1238 " dev_addr " MACSTR " wps_method %d",
1239 MAC2STR(res->peer_interface_addr),
1240 MAC2STR(res->peer_device_addr), res->wps_method);
1241 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1242 res->ssid, res->ssid_len);
1243 wpa_supplicant_ap_deinit(wpa_s);
1244 wpas_copy_go_neg_results(wpa_s, res);
1245 if (res->wps_method == WPS_PBC) {
1246 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1247 #ifdef CONFIG_WPS_NFC
1248 } else if (res->wps_method == WPS_NFC) {
1249 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1250 res->peer_interface_addr,
1251 wpa_s->parent->p2p_oob_dev_pw,
1252 wpa_s->parent->p2p_oob_dev_pw_id, 1,
1253 wpa_s->parent->p2p_oob_dev_pw_id ==
1254 DEV_PW_NFC_CONNECTION_HANDOVER ?
1255 wpa_s->parent->p2p_peer_oob_pubkey_hash :
1258 #endif /* CONFIG_WPS_NFC */
1260 u16 dev_pw_id = DEV_PW_DEFAULT;
1261 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1262 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1263 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1264 wpa_s->p2p_pin, 1, dev_pw_id);
1269 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1270 struct wpa_ssid *ssid)
1272 struct wpa_ssid *persistent;
1273 struct psk_list_entry *psk;
1274 struct hostapd_data *hapd;
1276 if (!wpa_s->ap_iface)
1279 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1281 if (persistent == NULL)
1284 hapd = wpa_s->ap_iface->bss[0];
1286 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1288 struct hostapd_wpa_psk *hpsk;
1290 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1292 MAC2STR(psk->addr), psk->p2p);
1293 hpsk = os_zalloc(sizeof(*hpsk));
1296 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1298 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1300 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1301 hpsk->next = hapd->conf->ssid.wpa_psk;
1302 hapd->conf->ssid.wpa_psk = hpsk;
1307 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1311 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1312 wpa_s->p2p_group_common_freqs_num);
1314 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1315 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1316 i, wpa_s->p2p_group_common_freqs[i]);
1320 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1321 struct p2p_go_neg_results *params)
1323 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1325 wpa_s->p2p_group_common_freqs_num = 0;
1326 os_free(wpa_s->p2p_group_common_freqs);
1327 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1328 if (!wpa_s->p2p_group_common_freqs)
1331 for (i = 0; i < len; i++) {
1332 if (!wpa_s->go_params->freq_list[i])
1334 wpa_s->p2p_group_common_freqs[i] =
1335 wpa_s->go_params->freq_list[i];
1337 wpa_s->p2p_group_common_freqs_num = i;
1341 static void p2p_go_configured(void *ctx, void *data)
1343 struct wpa_supplicant *wpa_s = ctx;
1344 struct p2p_go_neg_results *params = data;
1345 struct wpa_ssid *ssid;
1346 int network_id = -1;
1348 p2p_go_save_group_common_freqs(wpa_s, params);
1349 p2p_go_dump_common_freqs(wpa_s);
1351 ssid = wpa_s->current_ssid;
1352 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1353 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1354 if (wpa_s->global->p2p_group_formation == wpa_s)
1355 wpa_s->global->p2p_group_formation = NULL;
1356 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1357 params->passphrase[0] == '\0' ?
1360 wpa_s->global->p2p_dev_addr,
1361 params->persistent_group, "");
1362 wpa_s->group_formation_reported = 1;
1364 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1365 if (params->persistent_group) {
1366 network_id = wpas_p2p_store_persistent_group(
1367 wpa_s->parent, ssid,
1368 wpa_s->global->p2p_dev_addr);
1369 wpas_p2p_add_psk_list(wpa_s, ssid);
1372 network_id = ssid->id;
1373 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1374 wpas_p2p_cross_connect_setup(wpa_s);
1375 wpas_p2p_set_group_idle_timeout(wpa_s);
1377 if (wpa_s->p2p_first_connection_timeout) {
1378 wpa_dbg(wpa_s, MSG_DEBUG,
1379 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1380 wpa_s->p2p_first_connection_timeout);
1381 wpa_s->p2p_go_group_formation_completed = 0;
1382 wpa_s->global->p2p_group_formation = wpa_s;
1383 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1384 wpa_s->parent, NULL);
1385 eloop_register_timeout(
1386 wpa_s->p2p_first_connection_timeout, 0,
1387 wpas_p2p_group_formation_timeout,
1388 wpa_s->parent, NULL);
1394 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1395 if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1396 params->peer_interface_addr)) {
1397 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1401 if (params->wps_method == WPS_PBC) {
1402 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1403 params->peer_device_addr);
1404 #ifdef CONFIG_WPS_NFC
1405 } else if (params->wps_method == WPS_NFC) {
1406 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1407 DEV_PW_NFC_CONNECTION_HANDOVER &&
1408 !wpa_s->parent->p2p_oob_dev_pw) {
1409 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1412 wpas_ap_wps_add_nfc_pw(
1413 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1414 wpa_s->parent->p2p_oob_dev_pw,
1415 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1416 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1417 #endif /* CONFIG_WPS_NFC */
1418 } else if (wpa_s->p2p_pin[0])
1419 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1420 wpa_s->p2p_pin, NULL, 0, 0);
1421 os_free(wpa_s->go_params);
1422 wpa_s->go_params = NULL;
1426 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1427 struct p2p_go_neg_results *params,
1428 int group_formation)
1430 struct wpa_ssid *ssid;
1432 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1433 if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1434 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1439 ssid = wpa_config_add_network(wpa_s->conf);
1441 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1445 wpa_s->show_group_started = 0;
1446 wpa_s->p2p_go_group_formation_completed = 0;
1447 wpa_s->group_formation_reported = 0;
1449 wpa_config_set_network_defaults(ssid);
1450 ssid->temporary = 1;
1451 ssid->p2p_group = 1;
1452 ssid->p2p_persistent_group = params->persistent_group;
1453 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1455 ssid->frequency = params->freq;
1456 ssid->ht40 = params->ht40;
1457 ssid->vht = params->vht;
1458 ssid->ssid = os_zalloc(params->ssid_len + 1);
1460 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1461 ssid->ssid_len = params->ssid_len;
1463 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1464 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1465 ssid->proto = WPA_PROTO_RSN;
1466 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1467 ssid->group_cipher = WPA_CIPHER_CCMP;
1468 if (params->freq > 56160) {
1470 * Enable GCMP instead of CCMP as pairwise_cipher and
1471 * group_cipher in 60 GHz.
1473 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1474 ssid->group_cipher = WPA_CIPHER_GCMP;
1476 if (os_strlen(params->passphrase) > 0) {
1477 ssid->passphrase = os_strdup(params->passphrase);
1478 if (ssid->passphrase == NULL) {
1479 wpa_msg_global(wpa_s, MSG_ERROR,
1480 "P2P: Failed to copy passphrase for GO");
1481 wpa_config_remove_network(wpa_s->conf, ssid->id);
1485 ssid->passphrase = NULL;
1486 ssid->psk_set = params->psk_set;
1488 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1489 else if (ssid->passphrase)
1490 wpa_config_update_psk(ssid);
1491 ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1493 wpa_s->ap_configured_cb = p2p_go_configured;
1494 wpa_s->ap_configured_cb_ctx = wpa_s;
1495 wpa_s->ap_configured_cb_data = wpa_s->go_params;
1496 wpa_s->scan_req = NORMAL_SCAN_REQ;
1497 wpa_s->connect_without_scan = ssid;
1498 wpa_s->reassociate = 1;
1499 wpa_s->disconnected = 0;
1500 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1502 wpa_supplicant_req_scan(wpa_s, 0, 0);
1506 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1507 const struct wpa_supplicant *src)
1509 struct wpa_config *d;
1510 const struct wpa_config *s;
1515 #define C(n) if (s->n) d->n = os_strdup(s->n)
1524 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1525 os_memcpy(d->sec_device_type, s->sec_device_type,
1526 sizeof(d->sec_device_type));
1527 d->num_sec_device_types = s->num_sec_device_types;
1529 d->p2p_group_idle = s->p2p_group_idle;
1530 d->p2p_intra_bss = s->p2p_intra_bss;
1531 d->persistent_reconnect = s->persistent_reconnect;
1532 d->max_num_sta = s->max_num_sta;
1533 d->pbc_in_m1 = s->pbc_in_m1;
1534 d->ignore_old_scan_res = s->ignore_old_scan_res;
1535 d->beacon_int = s->beacon_int;
1536 d->dtim_period = s->dtim_period;
1537 d->disassoc_low_ack = s->disassoc_low_ack;
1538 d->disable_scan_offload = s->disable_scan_offload;
1540 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1541 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1542 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1547 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1548 char *ifname, size_t len)
1550 char *ifname_ptr = wpa_s->ifname;
1552 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1553 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1554 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1557 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1558 if (os_strlen(ifname) >= IFNAMSIZ &&
1559 os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1562 /* Try to avoid going over the IFNAMSIZ length limit */
1563 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1564 if (os_snprintf_error(len, res) && len)
1565 ifname[len - 1] = '\0';
1570 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1571 enum wpa_driver_if_type type)
1573 char ifname[120], force_ifname[120];
1575 if (wpa_s->pending_interface_name[0]) {
1576 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1577 "- skip creation of a new one");
1578 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1579 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1580 "unknown?! ifname='%s'",
1581 wpa_s->pending_interface_name);
1587 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1588 force_ifname[0] = '\0';
1590 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1592 wpa_s->p2p_group_idx++;
1594 wpa_s->pending_interface_type = type;
1595 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1596 wpa_s->pending_interface_addr, NULL) < 0) {
1597 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1602 if (force_ifname[0]) {
1603 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1605 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1606 sizeof(wpa_s->pending_interface_name));
1608 os_strlcpy(wpa_s->pending_interface_name, ifname,
1609 sizeof(wpa_s->pending_interface_name));
1610 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1611 MACSTR, wpa_s->pending_interface_name,
1612 MAC2STR(wpa_s->pending_interface_addr));
1618 static void wpas_p2p_remove_pending_group_interface(
1619 struct wpa_supplicant *wpa_s)
1621 if (!wpa_s->pending_interface_name[0] ||
1622 is_zero_ether_addr(wpa_s->pending_interface_addr))
1623 return; /* No pending virtual interface */
1625 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1626 wpa_s->pending_interface_name);
1627 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1628 wpa_s->pending_interface_name);
1629 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1630 wpa_s->pending_interface_name[0] = '\0';
1634 static struct wpa_supplicant *
1635 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1637 struct wpa_interface iface;
1638 struct wpa_supplicant *group_wpa_s;
1640 if (!wpa_s->pending_interface_name[0]) {
1641 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1642 if (!wpas_p2p_create_iface(wpa_s))
1645 * Something has forced us to remove the pending interface; try
1646 * to create a new one and hope for the best that we will get
1647 * the same local address.
1649 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1650 WPA_IF_P2P_CLIENT) < 0)
1654 os_memset(&iface, 0, sizeof(iface));
1655 iface.ifname = wpa_s->pending_interface_name;
1656 iface.driver = wpa_s->driver->name;
1657 if (wpa_s->conf->ctrl_interface == NULL &&
1658 wpa_s->parent != wpa_s &&
1660 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1661 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1663 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1664 iface.driver_param = wpa_s->conf->driver_param;
1665 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1666 if (group_wpa_s == NULL) {
1667 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1668 "wpa_supplicant interface");
1671 wpa_s->pending_interface_name[0] = '\0';
1672 group_wpa_s->parent = wpa_s;
1673 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1674 P2P_GROUP_INTERFACE_CLIENT;
1675 wpa_s->global->p2p_group_formation = group_wpa_s;
1677 wpas_p2p_clone_config(group_wpa_s, wpa_s);
1683 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1686 struct wpa_supplicant *wpa_s = eloop_ctx;
1687 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1688 wpas_p2p_group_formation_failed(wpa_s);
1692 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
1694 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1695 wpa_s->parent, NULL);
1696 if (wpa_s->global->p2p)
1697 p2p_group_formation_failed(wpa_s->global->p2p);
1698 wpas_group_formation_completed(wpa_s, 0);
1702 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
1704 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
1705 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1706 wpa_s->parent, NULL);
1707 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1708 wpa_s->parent, NULL);
1709 wpa_s->global->p2p_fail_on_wps_complete = 0;
1713 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
1715 if (wpa_s->global->p2p_group_formation != wpa_s)
1717 /* Speed up group formation timeout since this cannot succeed */
1718 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1719 wpa_s->parent, NULL);
1720 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1721 wpa_s->parent, NULL);
1725 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1727 struct wpa_supplicant *wpa_s = ctx;
1729 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1730 wpa_drv_cancel_remain_on_channel(wpa_s);
1731 wpa_s->off_channel_freq = 0;
1732 wpa_s->roc_waiting_drv_freq = 0;
1736 wpa_msg_global(wpa_s, MSG_INFO,
1737 P2P_EVENT_GO_NEG_FAILURE "status=%d",
1739 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1740 wpas_p2p_remove_pending_group_interface(wpa_s);
1744 if (wpa_s->p2p_go_ht40)
1746 if (wpa_s->p2p_go_vht)
1749 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
1750 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
1752 res->role_go ? "GO" : "client", res->freq, res->ht40,
1753 MAC2STR(res->peer_device_addr),
1754 MAC2STR(res->peer_interface_addr),
1755 p2p_wps_method_text(res->wps_method));
1756 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1758 if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1759 struct wpa_ssid *ssid;
1760 ssid = wpa_config_get_network(wpa_s->conf,
1761 wpa_s->p2p_persistent_id);
1762 if (ssid && ssid->disabled == 2 &&
1763 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1764 size_t len = os_strlen(ssid->passphrase);
1765 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1766 "on requested persistent group");
1767 os_memcpy(res->passphrase, ssid->passphrase, len);
1768 res->passphrase[len] = '\0';
1772 if (wpa_s->create_p2p_iface) {
1773 struct wpa_supplicant *group_wpa_s =
1774 wpas_p2p_init_group_interface(wpa_s, res->role_go);
1775 if (group_wpa_s == NULL) {
1776 wpas_p2p_remove_pending_group_interface(wpa_s);
1777 eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
1779 wpas_p2p_group_formation_failed(wpa_s);
1782 if (group_wpa_s != wpa_s) {
1783 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1784 sizeof(group_wpa_s->p2p_pin));
1785 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1787 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1788 wpa_s->pending_interface_name[0] = '\0';
1789 group_wpa_s->p2p_in_provisioning = 1;
1792 wpas_start_wps_go(group_wpa_s, res, 1);
1794 wpas_start_wps_enrollee(group_wpa_s, res);
1796 wpa_s->p2p_in_provisioning = 1;
1797 wpa_s->global->p2p_group_formation = wpa_s;
1800 wpas_start_wps_go(wpa_s, res, 1);
1802 wpas_start_wps_enrollee(ctx, res);
1805 wpa_s->p2p_long_listen = 0;
1806 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1808 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1809 eloop_register_timeout(15 + res->peer_config_timeout / 100,
1810 (res->peer_config_timeout % 100) * 10000,
1811 wpas_p2p_group_formation_timeout, wpa_s, NULL);
1815 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1817 struct wpa_supplicant *wpa_s = ctx;
1818 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1819 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1821 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1825 static void wpas_dev_found(void *ctx, const u8 *addr,
1826 const struct p2p_peer_info *info,
1829 #ifndef CONFIG_NO_STDOUT_DEBUG
1830 struct wpa_supplicant *wpa_s = ctx;
1831 char devtype[WPS_DEV_TYPE_BUFSIZE];
1832 char *wfd_dev_info_hex = NULL;
1834 #ifdef CONFIG_WIFI_DISPLAY
1835 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
1836 WFD_SUBELEM_DEVICE_INFO);
1837 #endif /* CONFIG_WIFI_DISPLAY */
1839 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1840 " p2p_dev_addr=" MACSTR
1841 " pri_dev_type=%s name='%s' config_methods=0x%x "
1842 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
1843 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1844 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1846 info->device_name, info->config_methods,
1847 info->dev_capab, info->group_capab,
1848 wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
1849 wfd_dev_info_hex ? wfd_dev_info_hex : "",
1850 info->vendor_elems ? " vendor_elems=1" : "",
1853 os_free(wfd_dev_info_hex);
1854 #endif /* CONFIG_NO_STDOUT_DEBUG */
1856 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1860 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1862 struct wpa_supplicant *wpa_s = ctx;
1864 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1865 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1867 wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1871 static void wpas_find_stopped(void *ctx)
1873 struct wpa_supplicant *wpa_s = ctx;
1874 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1878 struct wpas_p2p_listen_work {
1880 unsigned int duration;
1881 struct wpabuf *probe_resp_ie;
1885 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
1889 wpabuf_free(lwork->probe_resp_ie);
1894 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
1896 struct wpas_p2p_listen_work *lwork;
1898 if (!wpa_s->p2p_listen_work)
1901 lwork = wpa_s->p2p_listen_work->ctx;
1902 wpas_p2p_listen_work_free(lwork);
1903 radio_work_done(wpa_s->p2p_listen_work);
1904 wpa_s->p2p_listen_work = NULL;
1908 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
1910 struct wpa_supplicant *wpa_s = work->wpa_s;
1911 struct wpas_p2p_listen_work *lwork = work->ctx;
1912 unsigned int duration;
1915 if (work->started) {
1916 wpa_s->p2p_listen_work = NULL;
1917 wpas_stop_listen(wpa_s);
1919 wpas_p2p_listen_work_free(lwork);
1923 wpa_s->p2p_listen_work = work;
1925 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
1927 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1928 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1929 "report received Probe Request frames");
1930 wpas_p2p_listen_work_done(wpa_s);
1934 wpa_s->pending_listen_freq = lwork->freq;
1935 wpa_s->pending_listen_duration = lwork->duration;
1937 duration = lwork->duration;
1938 #ifdef CONFIG_TESTING_OPTIONS
1939 if (wpa_s->extra_roc_dur) {
1940 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
1941 duration, duration + wpa_s->extra_roc_dur);
1942 duration += wpa_s->extra_roc_dur;
1944 #endif /* CONFIG_TESTING_OPTIONS */
1946 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
1947 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1948 "to remain on channel (%u MHz) for Listen "
1949 "state", lwork->freq);
1950 wpas_p2p_listen_work_done(wpa_s);
1951 wpa_s->pending_listen_freq = 0;
1954 wpa_s->off_channel_freq = 0;
1955 wpa_s->roc_waiting_drv_freq = lwork->freq;
1959 static int wpas_start_listen(void *ctx, unsigned int freq,
1960 unsigned int duration,
1961 const struct wpabuf *probe_resp_ie)
1963 struct wpa_supplicant *wpa_s = ctx;
1964 struct wpas_p2p_listen_work *lwork;
1966 if (wpa_s->p2p_listen_work) {
1967 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
1971 lwork = os_zalloc(sizeof(*lwork));
1975 lwork->duration = duration;
1976 if (probe_resp_ie) {
1977 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
1978 if (lwork->probe_resp_ie == NULL) {
1979 wpas_p2p_listen_work_free(lwork);
1984 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
1986 wpas_p2p_listen_work_free(lwork);
1994 static void wpas_stop_listen(void *ctx)
1996 struct wpa_supplicant *wpa_s = ctx;
1997 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1998 wpa_drv_cancel_remain_on_channel(wpa_s);
1999 wpa_s->off_channel_freq = 0;
2000 wpa_s->roc_waiting_drv_freq = 0;
2002 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2003 wpa_drv_probe_req_report(wpa_s, 0);
2004 wpas_p2p_listen_work_done(wpa_s);
2008 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
2010 struct wpa_supplicant *wpa_s = ctx;
2011 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
2016 * DNS Header section is used only to calculate compression pointers, so the
2017 * contents of this data does not matter, but the length needs to be reserved
2018 * in the virtual packet.
2020 #define DNS_HEADER_LEN 12
2023 * 27-octet in-memory packet from P2P specification containing two implied
2024 * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
2026 #define P2P_SD_IN_MEMORY_LEN 27
2028 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
2029 u8 **spos, const u8 *end)
2031 while (*spos < end) {
2032 u8 val = ((*spos)[0] & 0xc0) >> 6;
2035 if (val == 1 || val == 2) {
2036 /* These are reserved values in RFC 1035 */
2037 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
2038 "sequence starting with 0x%x", val);
2047 if (*spos + 2 > end) {
2048 wpa_printf(MSG_DEBUG, "P2P: No room for full "
2049 "DNS offset field");
2053 offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
2054 if (offset >= *spos - start) {
2055 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
2056 "pointer offset %u", offset);
2061 spos_tmp = start + offset;
2062 return p2p_sd_dns_uncompress_label(upos, uend, start,
2068 len = (*spos)[0] & 0x3f;
2073 if (*spos + len > end) {
2074 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
2075 "sequence - no room for label with length "
2080 if (*upos + len + 2 > uend)
2083 os_memcpy(*upos, *spos, len);
2095 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
2096 * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
2097 * not large enough */
2098 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
2099 size_t msg_len, size_t offset)
2101 /* 27-octet in-memory packet from P2P specification */
2102 const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
2103 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
2104 u8 *tmp, *end, *spos;
2110 if (offset > msg_len)
2113 tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
2116 spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
2117 end = spos + msg_len;
2120 os_memset(tmp, 0, DNS_HEADER_LEN);
2121 os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
2122 os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
2125 uend = buf + buf_len;
2127 ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
2136 } else if (upos[-1] == '.')
2144 static struct p2p_srv_bonjour *
2145 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
2146 const struct wpabuf *query)
2148 struct p2p_srv_bonjour *bsrv;
2151 len = wpabuf_len(query);
2152 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2153 struct p2p_srv_bonjour, list) {
2154 if (len == wpabuf_len(bsrv->query) &&
2155 os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
2163 static struct p2p_srv_upnp *
2164 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
2165 const char *service)
2167 struct p2p_srv_upnp *usrv;
2169 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2170 struct p2p_srv_upnp, list) {
2171 if (version == usrv->version &&
2172 os_strcmp(service, usrv->service) == 0)
2179 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
2184 if (wpabuf_tailroom(resp) < 5)
2187 /* Length (to be filled) */
2188 len_pos = wpabuf_put(resp, 2);
2189 wpabuf_put_u8(resp, srv_proto);
2190 wpabuf_put_u8(resp, srv_trans_id);
2192 wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
2193 /* Response Data: empty */
2194 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2198 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
2199 struct wpabuf *resp, u8 srv_trans_id)
2201 struct p2p_srv_bonjour *bsrv;
2204 wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
2206 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2207 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2211 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2212 struct p2p_srv_bonjour, list) {
2213 if (wpabuf_tailroom(resp) <
2214 5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
2216 /* Length (to be filled) */
2217 len_pos = wpabuf_put(resp, 2);
2218 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2219 wpabuf_put_u8(resp, srv_trans_id);
2221 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2222 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2223 wpabuf_head(bsrv->resp),
2224 wpabuf_len(bsrv->resp));
2226 wpabuf_put_buf(resp, bsrv->query); /* Key */
2227 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2228 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2234 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
2237 char str_rx[256], str_srv[256];
2239 if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
2240 return 0; /* Too short to include DNS Type and Version */
2241 if (os_memcmp(query + query_len - 3,
2242 wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
2244 return 0; /* Mismatch in DNS Type or Version */
2245 if (query_len == wpabuf_len(bsrv->query) &&
2246 os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
2247 return 1; /* Binary match */
2249 if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
2251 return 0; /* Failed to uncompress query */
2252 if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
2253 wpabuf_head(bsrv->query),
2254 wpabuf_len(bsrv->query) - 3, 0))
2255 return 0; /* Failed to uncompress service */
2257 return os_strcmp(str_rx, str_srv) == 0;
2261 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
2262 struct wpabuf *resp, u8 srv_trans_id,
2263 const u8 *query, size_t query_len)
2265 struct p2p_srv_bonjour *bsrv;
2269 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
2271 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2272 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2273 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
2278 if (query_len == 0) {
2279 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2283 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2284 struct p2p_srv_bonjour, list) {
2285 if (!match_bonjour_query(bsrv, query, query_len))
2288 if (wpabuf_tailroom(resp) <
2289 5 + query_len + wpabuf_len(bsrv->resp))
2294 /* Length (to be filled) */
2295 len_pos = wpabuf_put(resp, 2);
2296 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2297 wpabuf_put_u8(resp, srv_trans_id);
2300 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2301 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2302 wpabuf_head(bsrv->resp),
2303 wpabuf_len(bsrv->resp));
2306 wpabuf_put_data(resp, query, query_len); /* Key */
2307 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2309 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2313 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
2315 if (wpabuf_tailroom(resp) < 5)
2318 /* Length (to be filled) */
2319 len_pos = wpabuf_put(resp, 2);
2320 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2321 wpabuf_put_u8(resp, srv_trans_id);
2324 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2325 /* Response Data: empty */
2326 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2332 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
2333 struct wpabuf *resp, u8 srv_trans_id)
2335 struct p2p_srv_upnp *usrv;
2338 wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
2340 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2341 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2345 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2346 struct p2p_srv_upnp, list) {
2347 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
2350 /* Length (to be filled) */
2351 len_pos = wpabuf_put(resp, 2);
2352 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2353 wpabuf_put_u8(resp, srv_trans_id);
2356 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2358 wpabuf_put_u8(resp, usrv->version);
2359 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2361 wpabuf_put_str(resp, usrv->service);
2362 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2368 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
2369 struct wpabuf *resp, u8 srv_trans_id,
2370 const u8 *query, size_t query_len)
2372 struct p2p_srv_upnp *usrv;
2378 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
2381 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2382 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2383 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
2388 if (query_len == 0) {
2389 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2393 if (wpabuf_tailroom(resp) < 5)
2396 /* Length (to be filled) */
2397 len_pos = wpabuf_put(resp, 2);
2398 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2399 wpabuf_put_u8(resp, srv_trans_id);
2402 str = os_malloc(query_len);
2405 os_memcpy(str, query + 1, query_len - 1);
2406 str[query_len - 1] = '\0';
2408 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2409 struct p2p_srv_upnp, list) {
2410 if (version != usrv->version)
2413 if (os_strcmp(str, "ssdp:all") != 0 &&
2414 os_strstr(usrv->service, str) == NULL)
2417 if (wpabuf_tailroom(resp) < 2)
2421 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2423 wpabuf_put_u8(resp, version);
2425 wpabuf_put_u8(resp, ',');
2429 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2431 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
2433 wpabuf_put_str(resp, usrv->service);
2438 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
2441 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2442 /* Response Data: empty */
2445 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2449 #ifdef CONFIG_WIFI_DISPLAY
2450 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
2451 struct wpabuf *resp, u8 srv_trans_id,
2452 const u8 *query, size_t query_len)
2458 wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
2460 if (!wpa_s->global->wifi_display) {
2461 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
2462 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
2467 if (query_len < 1) {
2468 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
2473 if (wpabuf_tailroom(resp) < 5)
2478 wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
2480 /* TODO: role specific handling */
2482 /* Length (to be filled) */
2483 len_pos = wpabuf_put(resp, 2);
2484 wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
2485 wpabuf_put_u8(resp, srv_trans_id);
2486 wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
2488 while (pos < query + query_len) {
2489 if (*pos < MAX_WFD_SUBELEMS &&
2490 wpa_s->global->wfd_subelem[*pos] &&
2491 wpabuf_tailroom(resp) >=
2492 wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
2493 wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
2494 "subelement %u", *pos);
2495 wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
2500 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2502 #endif /* CONFIG_WIFI_DISPLAY */
2505 static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
2506 u16 update_indic, const u8 *tlvs, size_t tlvs_len)
2508 struct wpa_supplicant *wpa_s = ctx;
2509 const u8 *pos = tlvs;
2510 const u8 *end = tlvs + tlvs_len;
2513 struct wpabuf *resp;
2514 u8 srv_proto, srv_trans_id;
2518 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
2520 buf_len = 2 * tlvs_len + 1;
2521 buf = os_malloc(buf_len);
2523 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2524 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
2526 freq, MAC2STR(sa), dialog_token, update_indic,
2531 if (wpa_s->p2p_sd_over_ctrl_iface) {
2532 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2533 update_indic, tlvs, tlvs_len);
2534 return; /* to be processed by an external program */
2537 resp = wpabuf_alloc(10000);
2541 while (pos + 1 < end) {
2542 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
2543 slen = WPA_GET_LE16(pos);
2545 if (pos + slen > end || slen < 2) {
2546 wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
2551 tlv_end = pos + slen;
2554 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2556 srv_trans_id = *pos++;
2557 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2560 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
2561 pos, tlv_end - pos);
2564 if (wpa_s->force_long_sd) {
2565 wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
2567 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2568 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2572 switch (srv_proto) {
2573 case P2P_SERV_ALL_SERVICES:
2574 wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
2575 "for all services");
2576 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
2577 dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2578 wpa_printf(MSG_DEBUG, "P2P: No service "
2579 "discovery protocols available");
2580 wpas_sd_add_proto_not_avail(
2581 resp, P2P_SERV_ALL_SERVICES,
2585 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2586 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2588 case P2P_SERV_BONJOUR:
2589 wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
2590 pos, tlv_end - pos);
2593 wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
2594 pos, tlv_end - pos);
2596 #ifdef CONFIG_WIFI_DISPLAY
2597 case P2P_SERV_WIFI_DISPLAY:
2598 wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
2599 pos, tlv_end - pos);
2601 #endif /* CONFIG_WIFI_DISPLAY */
2603 wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
2604 "protocol %u", srv_proto);
2605 wpas_sd_add_proto_not_avail(resp, srv_proto,
2614 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2615 update_indic, tlvs, tlvs_len);
2617 wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
2623 static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
2624 const u8 *tlvs, size_t tlvs_len)
2626 struct wpa_supplicant *wpa_s = ctx;
2627 const u8 *pos = tlvs;
2628 const u8 *end = tlvs + tlvs_len;
2634 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
2636 if (tlvs_len > 1500) {
2637 /* TODO: better way for handling this */
2638 wpa_msg_ctrl(wpa_s, MSG_INFO,
2639 P2P_EVENT_SERV_DISC_RESP MACSTR
2640 " %u <long response: %u bytes>",
2641 MAC2STR(sa), update_indic,
2642 (unsigned int) tlvs_len);
2644 buf_len = 2 * tlvs_len + 1;
2645 buf = os_malloc(buf_len);
2647 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2648 wpa_msg_ctrl(wpa_s, MSG_INFO,
2649 P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
2650 MAC2STR(sa), update_indic, buf);
2656 u8 srv_proto, srv_trans_id, status;
2658 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
2659 slen = WPA_GET_LE16(pos);
2661 if (pos + slen > end || slen < 3) {
2662 wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
2666 tlv_end = pos + slen;
2669 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2671 srv_trans_id = *pos++;
2672 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2675 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
2678 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
2679 pos, tlv_end - pos);
2684 wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
2688 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2689 const struct wpabuf *tlvs)
2691 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2693 return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
2697 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
2698 u8 version, const char *query)
2700 struct wpabuf *tlvs;
2703 tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
2706 wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
2707 wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
2708 wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
2709 wpabuf_put_u8(tlvs, version);
2710 wpabuf_put_str(tlvs, query);
2711 ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
2717 #ifdef CONFIG_WIFI_DISPLAY
2719 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
2720 const struct wpabuf *tlvs)
2722 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2724 return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
2728 #define MAX_WFD_SD_SUBELEMS 20
2730 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
2731 const char *subelems)
2738 len = wpabuf_put(tlvs, 2);
2739 wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
2740 wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
2742 wpabuf_put_u8(tlvs, role);
2747 if (val >= 0 && val < 256) {
2748 wpabuf_put_u8(tlvs, val);
2750 if (count == MAX_WFD_SD_SUBELEMS)
2753 pos = os_strchr(pos + 1, ',');
2759 WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2763 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2764 const u8 *dst, const char *role)
2766 struct wpabuf *tlvs;
2768 const char *subelems;
2771 subelems = os_strchr(role, ' ');
2772 if (subelems == NULL)
2776 tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2780 if (os_strstr(role, "[source]"))
2781 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2782 if (os_strstr(role, "[pri-sink]"))
2783 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2784 if (os_strstr(role, "[sec-sink]"))
2785 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2786 if (os_strstr(role, "[source+sink]"))
2787 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2789 ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2794 #endif /* CONFIG_WIFI_DISPLAY */
2797 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2799 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2801 return p2p_sd_cancel_request(wpa_s->global->p2p,
2802 (void *) (uintptr_t) req);
2806 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2807 const u8 *dst, u8 dialog_token,
2808 const struct wpabuf *resp_tlvs)
2810 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2812 p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2817 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2819 if (wpa_s->global->p2p)
2820 p2p_sd_service_update(wpa_s->global->p2p);
2824 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2826 dl_list_del(&bsrv->list);
2827 wpabuf_free(bsrv->query);
2828 wpabuf_free(bsrv->resp);
2833 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2835 dl_list_del(&usrv->list);
2836 os_free(usrv->service);
2841 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2843 struct p2p_srv_bonjour *bsrv, *bn;
2844 struct p2p_srv_upnp *usrv, *un;
2846 dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2847 struct p2p_srv_bonjour, list)
2848 wpas_p2p_srv_bonjour_free(bsrv);
2850 dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2851 struct p2p_srv_upnp, list)
2852 wpas_p2p_srv_upnp_free(usrv);
2854 wpas_p2p_sd_service_update(wpa_s);
2858 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2859 struct wpabuf *query, struct wpabuf *resp)
2861 struct p2p_srv_bonjour *bsrv;
2863 bsrv = os_zalloc(sizeof(*bsrv));
2866 bsrv->query = query;
2868 dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2870 wpas_p2p_sd_service_update(wpa_s);
2875 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2876 const struct wpabuf *query)
2878 struct p2p_srv_bonjour *bsrv;
2880 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2883 wpas_p2p_srv_bonjour_free(bsrv);
2884 wpas_p2p_sd_service_update(wpa_s);
2889 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2890 const char *service)
2892 struct p2p_srv_upnp *usrv;
2894 if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2895 return 0; /* Already listed */
2896 usrv = os_zalloc(sizeof(*usrv));
2899 usrv->version = version;
2900 usrv->service = os_strdup(service);
2901 if (usrv->service == NULL) {
2905 dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2907 wpas_p2p_sd_service_update(wpa_s);
2912 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2913 const char *service)
2915 struct p2p_srv_upnp *usrv;
2917 usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2920 wpas_p2p_srv_upnp_free(usrv);
2921 wpas_p2p_sd_service_update(wpa_s);
2926 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2927 const u8 *peer, const char *params,
2928 unsigned int generated_pin)
2930 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2931 " %08d%s", MAC2STR(peer), generated_pin, params);
2935 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2936 const u8 *peer, const char *params)
2938 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2939 "%s", MAC2STR(peer), params);
2943 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2944 const u8 *dev_addr, const u8 *pri_dev_type,
2945 const char *dev_name, u16 supp_config_methods,
2946 u8 dev_capab, u8 group_capab, const u8 *group_id,
2947 size_t group_id_len)
2949 struct wpa_supplicant *wpa_s = ctx;
2950 char devtype[WPS_DEV_TYPE_BUFSIZE];
2952 u8 empty_dev_type[8];
2953 unsigned int generated_pin = 0;
2954 struct wpa_supplicant *group = NULL;
2958 for (group = wpa_s->global->ifaces; group; group = group->next)
2960 struct wpa_ssid *s = group->current_ssid;
2962 s->mode == WPAS_MODE_P2P_GO &&
2963 group_id_len - ETH_ALEN == s->ssid_len &&
2964 os_memcmp(group_id + ETH_ALEN, s->ssid,
2970 if (pri_dev_type == NULL) {
2971 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2972 pri_dev_type = empty_dev_type;
2974 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2975 " pri_dev_type=%s name='%s' config_methods=0x%x "
2976 "dev_capab=0x%x group_capab=0x%x%s%s",
2978 wps_dev_type_bin2str(pri_dev_type, devtype,
2980 dev_name, supp_config_methods, dev_capab, group_capab,
2981 group ? " group=" : "",
2982 group ? group->ifname : "");
2983 if (os_snprintf_error(sizeof(params), res))
2984 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2985 params[sizeof(params) - 1] = '\0';
2987 if (config_methods & WPS_CONFIG_DISPLAY) {
2988 generated_pin = wps_generate_pin();
2989 wpas_prov_disc_local_display(wpa_s, peer, params,
2991 } else if (config_methods & WPS_CONFIG_KEYPAD)
2992 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2993 else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2994 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2995 MACSTR "%s", MAC2STR(peer), params);
2997 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2998 P2P_PROV_DISC_SUCCESS,
2999 config_methods, generated_pin);
3003 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
3005 struct wpa_supplicant *wpa_s = ctx;
3006 unsigned int generated_pin = 0;
3009 if (wpa_s->pending_pd_before_join &&
3010 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
3011 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
3012 wpa_s->pending_pd_before_join = 0;
3013 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
3014 "join-existing-group operation");
3015 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
3019 if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
3020 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
3023 res = os_snprintf(params, sizeof(params), " peer_go=%d",
3024 wpa_s->pending_pd_use == AUTO_PD_JOIN);
3025 if (os_snprintf_error(sizeof(params), res))
3026 params[sizeof(params) - 1] = '\0';
3030 if (config_methods & WPS_CONFIG_DISPLAY)
3031 wpas_prov_disc_local_keypad(wpa_s, peer, params);
3032 else if (config_methods & WPS_CONFIG_KEYPAD) {
3033 generated_pin = wps_generate_pin();
3034 wpas_prov_disc_local_display(wpa_s, peer, params,
3036 } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
3037 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
3038 MACSTR "%s", MAC2STR(peer), params);
3040 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
3041 P2P_PROV_DISC_SUCCESS,
3042 config_methods, generated_pin);
3046 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
3047 enum p2p_prov_disc_status status)
3049 struct wpa_supplicant *wpa_s = ctx;
3051 if (wpa_s->p2p_fallback_to_go_neg) {
3052 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
3053 "failed - fall back to GO Negotiation");
3054 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
3058 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
3059 wpa_s->pending_pd_before_join = 0;
3060 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
3061 "join-existing-group operation (no ACK for PD "
3063 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
3067 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3068 " p2p_dev_addr=" MACSTR " status=%d",
3069 MAC2STR(peer), status);
3071 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
3076 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
3078 if (channels == NULL)
3079 return 1; /* Assume no restrictions */
3080 return p2p_channels_includes_freq(channels, freq);
3086 * Pick the best frequency to use from all the currently used frequencies.
3088 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
3089 struct wpa_used_freq_data *freqs,
3094 /* find a candidate freq that is supported by P2P */
3095 for (c = 0; c < num; c++)
3096 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
3102 /* once we have a candidate, try to find a 'better' one */
3103 for (i = c + 1; i < num; i++) {
3104 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
3108 * 1. Infrastructure station interfaces have higher preference.
3109 * 2. P2P Clients have higher preference.
3112 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
3117 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
3120 return freqs[c].freq;
3124 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
3125 const u8 *go_dev_addr, const u8 *ssid,
3126 size_t ssid_len, int *go, u8 *group_bssid,
3127 int *force_freq, int persistent_group,
3128 const struct p2p_channels *channels,
3131 struct wpa_supplicant *wpa_s = ctx;
3133 struct wpa_used_freq_data *freqs;
3134 struct wpa_supplicant *grp;
3137 if (!persistent_group) {
3138 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
3139 " to join an active group (SSID: %s)",
3140 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
3141 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
3142 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
3144 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
3145 wpa_printf(MSG_DEBUG, "P2P: Accept previously "
3146 "authorized invitation");
3150 #ifdef CONFIG_WPS_NFC
3151 if (dev_pw_id >= 0 && wpa_s->parent->p2p_nfc_tag_enabled &&
3152 dev_pw_id == wpa_s->parent->p2p_oob_dev_pw_id) {
3153 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
3154 wpa_s->parent->p2p_wps_method = WPS_NFC;
3155 wpa_s->parent->pending_join_wps_method = WPS_NFC;
3156 os_memcpy(wpa_s->parent->pending_join_dev_addr,
3157 go_dev_addr, ETH_ALEN);
3158 os_memcpy(wpa_s->parent->pending_join_iface_addr,
3162 #endif /* CONFIG_WPS_NFC */
3165 * Do not accept the invitation automatically; notify user and
3168 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
3171 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
3173 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
3174 "running persistent group");
3176 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
3180 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
3181 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
3182 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
3183 "invitation to re-invoke a persistent group");
3184 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
3185 } else if (!wpa_s->conf->persistent_reconnect)
3186 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
3188 for (s = wpa_s->conf->ssid; s; s = s->next) {
3189 if (s->disabled == 2 &&
3190 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
3191 s->ssid_len == ssid_len &&
3192 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3197 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
3198 " requested reinvocation of an unknown group",
3200 return P2P_SC_FAIL_UNKNOWN_GROUP;
3203 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
3205 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3206 wpa_printf(MSG_DEBUG, "P2P: The only available "
3207 "interface is already in use - reject "
3209 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3211 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
3212 } else if (s->mode == WPAS_MODE_P2P_GO) {
3214 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
3216 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3217 "interface address for the group");
3218 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3220 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
3225 wpas_p2p_set_own_freq_preference(wpa_s, 0);
3228 freqs = os_calloc(wpa_s->num_multichan_concurrent,
3229 sizeof(struct wpa_used_freq_data));
3231 int num_channels = wpa_s->num_multichan_concurrent;
3232 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
3233 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
3237 /* Get one of the frequencies currently in use */
3238 if (best_freq > 0) {
3239 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3240 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
3242 if (wpa_s->num_multichan_concurrent < 2 ||
3243 wpas_p2p_num_unused_channels(wpa_s) < 1) {
3244 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3245 *force_freq = best_freq;
3249 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3250 wpas_p2p_num_unused_channels(wpa_s) > 0) {
3252 /* We are the client */
3253 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3254 "running a GO but we are capable of MCC, "
3255 "figure out the best channel to use");
3257 } else if (!freq_included(channels, *force_freq)) {
3258 /* We are the GO, and *force_freq is not in the
3260 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3261 "in intersection but we are capable of MCC, "
3262 "figure out the best channel to use",
3268 return P2P_SC_SUCCESS;
3272 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3273 const u8 *ssid, size_t ssid_len,
3274 const u8 *go_dev_addr, u8 status,
3277 struct wpa_supplicant *wpa_s = ctx;
3280 for (s = wpa_s->conf->ssid; s; s = s->next) {
3281 if (s->disabled == 2 &&
3282 s->ssid_len == ssid_len &&
3283 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3287 if (status == P2P_SC_SUCCESS) {
3288 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3289 " was accepted; op_freq=%d MHz, SSID=%s",
3290 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3292 int go = s->mode == WPAS_MODE_P2P_GO;
3293 wpas_p2p_group_add_persistent(
3294 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
3295 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3297 wpa_s->user_initiated_pd = 0;
3298 wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3299 wpa_s->p2p_wps_method, 0, op_freq,
3305 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3306 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3307 " was rejected (status %u)", MAC2STR(sa), status);
3313 wpa_msg_global(wpa_s, MSG_INFO,
3314 P2P_EVENT_INVITATION_RECEIVED
3315 "sa=" MACSTR " go_dev_addr=" MACSTR
3316 " bssid=" MACSTR " unknown-network",
3317 MAC2STR(sa), MAC2STR(go_dev_addr),
3320 wpa_msg_global(wpa_s, MSG_INFO,
3321 P2P_EVENT_INVITATION_RECEIVED
3322 "sa=" MACSTR " go_dev_addr=" MACSTR
3324 MAC2STR(sa), MAC2STR(go_dev_addr));
3329 if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3330 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3331 "sa=" MACSTR " persistent=%d freq=%d",
3332 MAC2STR(sa), s->id, op_freq);
3334 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3335 "sa=" MACSTR " persistent=%d",
3336 MAC2STR(sa), s->id);
3341 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3342 struct wpa_ssid *ssid,
3343 const u8 *peer, int inv)
3350 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3351 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
3355 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3356 if (ssid->mode != WPAS_MODE_P2P_GO &&
3357 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3358 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3359 "due to invitation result", ssid->id);
3360 wpas_notify_network_removed(wpa_s, ssid);
3361 wpa_config_remove_network(wpa_s->conf, ssid->id);
3364 return; /* Peer not found in client list */
3367 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3368 "group %d client list%s",
3369 MAC2STR(peer), ssid->id,
3370 inv ? " due to invitation result" : "");
3371 os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
3372 ssid->p2p_client_list + (i + 1) * ETH_ALEN,
3373 (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
3374 ssid->num_p2p_clients--;
3375 if (wpa_s->parent->conf->update_config &&
3376 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
3377 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3381 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3384 struct wpa_ssid *ssid;
3386 wpa_s = wpa_s->global->p2p_invite_group;
3388 return; /* No known invitation group */
3389 ssid = wpa_s->current_ssid;
3390 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3391 !ssid->p2p_persistent_group)
3392 return; /* Not operating as a GO in persistent group */
3393 ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3394 ssid->ssid, ssid->ssid_len);
3395 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3399 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3400 const struct p2p_channels *channels,
3401 const u8 *peer, int neg_freq,
3404 struct wpa_supplicant *wpa_s = ctx;
3405 struct wpa_ssid *ssid;
3409 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3410 "status=%d " MACSTR,
3411 status, MAC2STR(bssid));
3413 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3414 "status=%d ", status);
3416 wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3418 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3419 status, MAC2STR(peer));
3420 if (wpa_s->pending_invite_ssid_id == -1) {
3421 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3422 wpas_remove_persistent_client(wpa_s, peer);
3423 return; /* Invitation to active group */
3426 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3427 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3428 "invitation exchange to indicate readiness for "
3432 if (status != P2P_SC_SUCCESS) {
3433 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3434 ssid = wpa_config_get_network(
3435 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3436 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3438 wpas_p2p_remove_pending_group_interface(wpa_s);
3442 ssid = wpa_config_get_network(wpa_s->conf,
3443 wpa_s->pending_invite_ssid_id);
3445 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3446 "data matching with invitation");
3451 * The peer could have missed our ctrl::ack frame for Invitation
3452 * Response and continue retransmitting the frame. To reduce the
3453 * likelihood of the peer not getting successful TX status for the
3454 * Invitation Response frame, wait a short time here before starting
3455 * the persistent group so that we will remain on the current channel to
3456 * acknowledge any possible retransmission from the peer.
3458 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3459 "starting persistent group");
3462 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3463 freq_included(channels, neg_freq))
3465 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3466 freq_included(channels, peer_oper_freq))
3467 freq = peer_oper_freq;
3471 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3472 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3473 wpas_p2p_group_add_persistent(wpa_s, ssid,
3474 ssid->mode == WPAS_MODE_P2P_GO,
3475 wpa_s->p2p_persistent_go_freq,
3477 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3479 ssid->mode == WPAS_MODE_P2P_GO ?
3480 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3485 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3488 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3490 return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3494 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3496 reg->channel[reg->channels] = chan;
3501 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3502 struct p2p_channels *chan,
3503 struct p2p_channels *cli_chan)
3507 wpa_s->global->p2p_24ghz_social_channels = 1;
3509 os_memset(cli_chan, 0, sizeof(*cli_chan));
3511 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3514 /* Operating class 81 - 2.4 GHz band channels 1..13 */
3515 chan->reg_class[cla].reg_class = 81;
3516 chan->reg_class[cla].channels = 0;
3517 for (i = 0; i < 11; i++) {
3518 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3519 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3521 if (chan->reg_class[cla].channels)
3524 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3527 /* Operating class 115 - 5 GHz, channels 36-48 */
3528 chan->reg_class[cla].reg_class = 115;
3529 chan->reg_class[cla].channels = 0;
3530 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3531 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3532 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3533 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3534 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3535 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3536 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3537 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3538 if (chan->reg_class[cla].channels)
3541 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3544 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3545 chan->reg_class[cla].reg_class = 124;
3546 chan->reg_class[cla].channels = 0;
3547 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3548 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3549 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3550 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3551 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3552 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3553 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3554 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3555 if (chan->reg_class[cla].channels)
3558 chan->reg_classes = cla;
3563 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3565 enum hostapd_hw_mode mode)
3569 for (i = 0; i < num_modes; i++) {
3570 if (modes[i].mode == mode)
3579 NOT_ALLOWED, NO_IR, ALLOWED
3582 static int has_channel(struct wpa_global *global,
3583 struct hostapd_hw_modes *mode, u8 chan, int *flags)
3588 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3590 if (wpas_p2p_disallowed_freq(global, freq))
3593 for (i = 0; i < mode->num_channels; i++) {
3594 if (mode->channels[i].chan == chan) {
3596 *flags = mode->channels[i].flag;
3597 if (mode->channels[i].flag &
3598 (HOSTAPD_CHAN_DISABLED |
3599 HOSTAPD_CHAN_RADAR))
3601 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3611 struct p2p_oper_class_map {
3612 enum hostapd_hw_mode mode;
3617 enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3620 static struct p2p_oper_class_map op_class[] = {
3621 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3622 #if 0 /* Do not enable HT40 on 2 GHz for now */
3623 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3624 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3626 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3627 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3628 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3629 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3630 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3631 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3634 * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3635 * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3636 * 80 MHz, but currently use the following definition for simplicity
3637 * (these center frequencies are not actual channels, which makes
3638 * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3639 * removing invalid channels.
3641 { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3642 { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3643 { -1, 0, 0, 0, 0, BW20 }
3647 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3648 struct hostapd_hw_modes *mode,
3651 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3654 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3657 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3659 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3660 * so the center channel is 6 channels away from the start/end.
3662 if (channel >= center_channels[i] - 6 &&
3663 channel <= center_channels[i] + 6)
3664 return center_channels[i];
3670 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3671 struct hostapd_hw_modes *mode,
3676 enum chan_allowed res, ret = ALLOWED;
3678 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3681 if (center_chan >= 58 && center_chan <= 138)
3682 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3684 /* check all the channels are available */
3685 for (i = 0; i < 4; i++) {
3686 int adj_chan = center_chan - 6 + i * 4;
3688 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3689 if (res == NOT_ALLOWED)
3694 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3696 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3698 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3700 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3708 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3709 struct hostapd_hw_modes *mode,
3713 enum chan_allowed res, res2;
3715 res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3716 if (bw == BW40MINUS) {
3717 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3719 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3720 } else if (bw == BW40PLUS) {
3721 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3723 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3724 } else if (bw == BW80) {
3725 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3728 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3730 if (res == NO_IR || res2 == NO_IR)
3736 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3737 struct p2p_channels *chan,
3738 struct p2p_channels *cli_chan)
3740 struct hostapd_hw_modes *mode;
3741 int cla, op, cli_cla;
3743 if (wpa_s->hw.modes == NULL) {
3744 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3745 "of all supported channels; assume dualband "
3747 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3752 for (op = 0; op_class[op].op_class; op++) {
3753 struct p2p_oper_class_map *o = &op_class[op];
3755 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3757 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3760 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3761 wpa_s->global->p2p_24ghz_social_channels = 1;
3762 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3763 enum chan_allowed res;
3764 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3765 if (res == ALLOWED) {
3767 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3769 reg = &chan->reg_class[cla];
3771 reg->reg_class = o->op_class;
3773 reg->channel[reg->channels] = ch;
3775 } else if (res == NO_IR &&
3776 wpa_s->conf->p2p_add_cli_chan) {
3777 if (cli_reg == NULL) {
3778 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3780 cli_reg = &cli_chan->reg_class[cli_cla];
3782 cli_reg->reg_class = o->op_class;
3784 cli_reg->channel[cli_reg->channels] = ch;
3785 cli_reg->channels++;
3789 wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3790 reg->channel, reg->channels);
3793 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3794 cli_reg->channel, cli_reg->channels);
3798 chan->reg_classes = cla;
3799 cli_chan->reg_classes = cli_cla;
3805 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3806 struct hostapd_hw_modes *mode, u8 channel)
3809 enum chan_allowed ret;
3811 for (op = 0; op_class[op].op_class; op++) {
3812 struct p2p_oper_class_map *o = &op_class[op];
3815 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3816 if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3817 o->bw == BW20 || ch != channel)
3819 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3821 return (o->bw == BW40MINUS) ? -1 : 1;
3828 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3829 struct hostapd_hw_modes *mode, u8 channel)
3831 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3834 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3838 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3841 struct wpa_supplicant *wpa_s = ctx;
3843 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3844 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3850 return wpa_drv_get_noa(wpa_s, buf, buf_len);
3854 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3855 const u8 *ssid, size_t ssid_len)
3857 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3858 struct wpa_ssid *s = wpa_s->current_ssid;
3861 if (s->mode != WPAS_MODE_P2P_GO &&
3862 s->mode != WPAS_MODE_AP &&
3863 s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3865 if (s->ssid_len != ssid_len ||
3866 os_memcmp(ssid, s->ssid, ssid_len) != 0)
3876 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3877 const u8 *peer_dev_addr)
3879 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3880 struct wpa_ssid *ssid = wpa_s->current_ssid;
3883 if (ssid->mode != WPAS_MODE_INFRA)
3885 if (wpa_s->wpa_state != WPA_COMPLETED &&
3886 wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3888 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3896 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3898 struct wpa_supplicant *wpa_s = ctx;
3900 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3904 static int wpas_is_concurrent_session_active(void *ctx)
3906 struct wpa_supplicant *wpa_s = ctx;
3907 struct wpa_supplicant *ifs;
3909 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3912 if (ifs->wpa_state > WPA_ASSOCIATED)
3919 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3921 struct wpa_supplicant *wpa_s = ctx;
3922 wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3926 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3927 const char *conf_p2p_dev)
3929 struct wpa_interface iface;
3930 struct wpa_supplicant *p2pdev_wpa_s;
3932 char force_name[100];
3935 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3937 if (os_snprintf_error(sizeof(ifname), ret))
3939 force_name[0] = '\0';
3940 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3941 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3942 force_name, wpa_s->pending_interface_addr, NULL);
3944 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3947 os_strlcpy(wpa_s->pending_interface_name, ifname,
3948 sizeof(wpa_s->pending_interface_name));
3950 os_memset(&iface, 0, sizeof(iface));
3952 iface.ifname = wpa_s->pending_interface_name;
3953 iface.driver = wpa_s->driver->name;
3954 iface.driver_param = wpa_s->conf->driver_param;
3957 * If a P2P Device configuration file was given, use it as the interface
3958 * configuration file (instead of using parent's configuration file.
3961 iface.confname = conf_p2p_dev;
3962 iface.ctrl_interface = NULL;
3964 iface.confname = wpa_s->confname;
3965 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3967 iface.conf_p2p_dev = NULL;
3969 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
3970 if (!p2pdev_wpa_s) {
3971 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3974 p2pdev_wpa_s->parent = wpa_s;
3975 wpa_s->p2p_dev = p2pdev_wpa_s;
3977 wpa_s->pending_interface_name[0] = '\0';
3982 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3983 const u8 *noa, size_t noa_len)
3985 struct wpa_supplicant *wpa_s, *intf = ctx;
3988 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3989 if (wpa_s->waiting_presence_resp)
3993 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3996 wpa_s->waiting_presence_resp = 0;
3998 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3999 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
4000 " status=%u noa=%s", MAC2STR(src), status, hex);
4004 static int _wpas_p2p_in_progress(void *ctx)
4006 struct wpa_supplicant *wpa_s = ctx;
4007 return wpas_p2p_in_progress(wpa_s);
4012 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4013 * @global: Pointer to global data from wpa_supplicant_init()
4014 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4015 * Returns: 0 on success, -1 on failure
4017 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4019 struct p2p_config p2p;
4022 if (wpa_s->conf->p2p_disabled)
4025 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4031 os_memset(&p2p, 0, sizeof(p2p));
4033 p2p.debug_print = wpas_p2p_debug_print;
4034 p2p.p2p_scan = wpas_p2p_scan;
4035 p2p.send_action = wpas_send_action;
4036 p2p.send_action_done = wpas_send_action_done;
4037 p2p.go_neg_completed = wpas_go_neg_completed;
4038 p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4039 p2p.dev_found = wpas_dev_found;
4040 p2p.dev_lost = wpas_dev_lost;
4041 p2p.find_stopped = wpas_find_stopped;
4042 p2p.start_listen = wpas_start_listen;
4043 p2p.stop_listen = wpas_stop_listen;
4044 p2p.send_probe_resp = wpas_send_probe_resp;
4045 p2p.sd_request = wpas_sd_request;
4046 p2p.sd_response = wpas_sd_response;
4047 p2p.prov_disc_req = wpas_prov_disc_req;
4048 p2p.prov_disc_resp = wpas_prov_disc_resp;
4049 p2p.prov_disc_fail = wpas_prov_disc_fail;
4050 p2p.invitation_process = wpas_invitation_process;
4051 p2p.invitation_received = wpas_invitation_received;
4052 p2p.invitation_result = wpas_invitation_result;
4053 p2p.get_noa = wpas_get_noa;
4054 p2p.go_connected = wpas_go_connected;
4055 p2p.presence_resp = wpas_presence_resp;
4056 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4057 p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4059 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4060 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4061 p2p.dev_name = wpa_s->conf->device_name;
4062 p2p.manufacturer = wpa_s->conf->manufacturer;
4063 p2p.model_name = wpa_s->conf->model_name;
4064 p2p.model_number = wpa_s->conf->model_number;
4065 p2p.serial_number = wpa_s->conf->serial_number;
4067 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4068 p2p.config_methods = wpa_s->wps->config_methods;
4071 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4072 wpa_printf(MSG_ERROR,
4073 "P2P: Failed to configure supported channel list");
4077 if (wpa_s->conf->p2p_listen_reg_class &&
4078 wpa_s->conf->p2p_listen_channel) {
4079 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4080 p2p.channel = wpa_s->conf->p2p_listen_channel;
4081 p2p.channel_forced = 1;
4084 * Pick one of the social channels randomly as the listen
4087 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4088 &p2p.channel) != 0) {
4089 wpa_printf(MSG_ERROR,
4090 "P2P: Failed to select random social channel as listen channel");
4093 p2p.channel_forced = 0;
4095 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4096 p2p.reg_class, p2p.channel);
4098 if (wpa_s->conf->p2p_oper_reg_class &&
4099 wpa_s->conf->p2p_oper_channel) {
4100 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4101 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4102 p2p.cfg_op_channel = 1;
4103 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4104 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4108 * Use random operation channel from 2.4 GHz band social
4109 * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4110 * other preference is indicated.
4112 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4113 &p2p.op_channel) != 0) {
4114 wpa_printf(MSG_ERROR,
4115 "P2P: Failed to select random social channel as operation channel");
4118 p2p.cfg_op_channel = 0;
4119 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4120 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4123 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4124 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4125 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4128 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4129 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4130 p2p.country[2] = 0x04;
4132 os_memcpy(p2p.country, "XX\x04", 3);
4134 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4137 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4138 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4139 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4141 p2p.concurrent_operations = !!(wpa_s->drv_flags &
4142 WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4144 p2p.max_peers = 100;
4146 if (wpa_s->conf->p2p_ssid_postfix) {
4147 p2p.ssid_postfix_len =
4148 os_strlen(wpa_s->conf->p2p_ssid_postfix);
4149 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4150 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4151 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4152 p2p.ssid_postfix_len);
4155 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4157 p2p.max_listen = wpa_s->max_remain_on_chan;
4159 if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4160 wpa_s->conf->p2p_passphrase_len <= 63)
4161 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4163 p2p.passphrase_len = 8;
4165 global->p2p = p2p_init(&p2p);
4166 if (global->p2p == NULL)
4168 global->p2p_init_wpa_s = wpa_s;
4170 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4171 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4173 p2p_add_wps_vendor_extension(
4174 global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4177 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4184 * wpas_p2p_deinit - Deinitialize per-interface P2P data
4185 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4187 * This function deinitialize per-interface P2P data.
4189 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4191 if (wpa_s->driver && wpa_s->drv_priv)
4192 wpa_drv_probe_req_report(wpa_s, 0);
4194 if (wpa_s->go_params) {
4195 /* Clear any stored provisioning info */
4196 p2p_clear_provisioning_info(
4198 wpa_s->go_params->peer_device_addr);
4201 os_free(wpa_s->go_params);
4202 wpa_s->go_params = NULL;
4203 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4204 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4205 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4206 wpa_s->p2p_long_listen = 0;
4207 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4208 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4209 wpas_p2p_remove_pending_group_interface(wpa_s);
4210 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4211 wpas_p2p_listen_work_done(wpa_s);
4212 if (wpa_s->p2p_send_action_work) {
4213 os_free(wpa_s->p2p_send_action_work->ctx);
4214 radio_work_done(wpa_s->p2p_send_action_work);
4215 wpa_s->p2p_send_action_work = NULL;
4217 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4219 wpabuf_free(wpa_s->p2p_oob_dev_pw);
4220 wpa_s->p2p_oob_dev_pw = NULL;
4222 os_free(wpa_s->p2p_group_common_freqs);
4223 wpa_s->p2p_group_common_freqs = NULL;
4224 wpa_s->p2p_group_common_freqs_num = 0;
4226 /* TODO: remove group interface from the driver if this wpa_s instance
4227 * is on top of a P2P group interface */
4232 * wpas_p2p_deinit_global - Deinitialize global P2P module
4233 * @global: Pointer to global data from wpa_supplicant_init()
4235 * This function deinitializes the global (per device) P2P module.
4237 static void wpas_p2p_deinit_global(struct wpa_global *global)
4239 struct wpa_supplicant *wpa_s, *tmp;
4241 wpa_s = global->ifaces;
4243 wpas_p2p_service_flush(global->p2p_init_wpa_s);
4245 /* Remove remaining P2P group interfaces */
4246 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4247 wpa_s = wpa_s->next;
4249 tmp = global->ifaces;
4252 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4257 /* Disconnect from the P2P group and deinit the interface */
4258 wpas_p2p_disconnect(tmp);
4262 * Deinit GO data on any possibly remaining interface (if main
4263 * interface is used as GO).
4265 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4266 if (wpa_s->ap_iface)
4267 wpas_p2p_group_deinit(wpa_s);
4270 p2p_deinit(global->p2p);
4272 global->p2p_init_wpa_s = NULL;
4276 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4278 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4279 wpa_s->conf->p2p_no_group_iface)
4280 return 0; /* separate interface disabled per configuration */
4281 if (wpa_s->drv_flags &
4282 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4283 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4284 return 1; /* P2P group requires a new interface in every case
4286 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4287 return 0; /* driver does not support concurrent operations */
4288 if (wpa_s->global->ifaces->next)
4289 return 1; /* more that one interface already in use */
4290 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4291 return 1; /* this interface is already in use */
4296 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4297 const u8 *peer_addr,
4298 enum p2p_wps_method wps_method,
4299 int go_intent, const u8 *own_interface_addr,
4300 unsigned int force_freq, int persistent_group,
4301 struct wpa_ssid *ssid, unsigned int pref_freq)
4303 if (persistent_group && wpa_s->conf->persistent_reconnect)
4304 persistent_group = 2;
4307 * Increase GO config timeout if HT40 is used since it takes some time
4308 * to scan channels for coex purposes before the BSS can be started.
4310 p2p_set_config_timeout(wpa_s->global->p2p,
4311 wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4313 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4314 go_intent, own_interface_addr, force_freq,
4315 persistent_group, ssid ? ssid->ssid : NULL,
4316 ssid ? ssid->ssid_len : 0,
4317 wpa_s->p2p_pd_before_go_neg, pref_freq,
4318 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4323 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4324 const u8 *peer_addr,
4325 enum p2p_wps_method wps_method,
4326 int go_intent, const u8 *own_interface_addr,
4327 unsigned int force_freq, int persistent_group,
4328 struct wpa_ssid *ssid, unsigned int pref_freq)
4330 if (persistent_group && wpa_s->conf->persistent_reconnect)
4331 persistent_group = 2;
4333 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4334 go_intent, own_interface_addr, force_freq,
4335 persistent_group, ssid ? ssid->ssid : NULL,
4336 ssid ? ssid->ssid_len : 0, pref_freq,
4337 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4342 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4344 wpa_s->p2p_join_scan_count++;
4345 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4346 wpa_s->p2p_join_scan_count);
4347 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4348 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4349 " for join operationg - stop join attempt",
4350 MAC2STR(wpa_s->pending_join_iface_addr));
4351 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4352 if (wpa_s->p2p_auto_pd) {
4353 wpa_s->p2p_auto_pd = 0;
4354 wpa_msg_global(wpa_s, MSG_INFO,
4355 P2P_EVENT_PROV_DISC_FAILURE
4356 " p2p_dev_addr=" MACSTR " status=N/A",
4357 MAC2STR(wpa_s->pending_join_dev_addr));
4360 wpa_msg_global(wpa_s->parent, MSG_INFO,
4361 P2P_EVENT_GROUP_FORMATION_FAILURE);
4366 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4369 unsigned int num, i;
4370 struct wpa_used_freq_data *freqs;
4372 if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4373 /* Multiple channels are supported and not all are in use */
4377 freqs = os_calloc(wpa_s->num_multichan_concurrent,
4378 sizeof(struct wpa_used_freq_data));
4382 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4383 wpa_s->num_multichan_concurrent);
4385 for (i = 0; i < num; i++) {
4386 if (freqs[i].freq == freq) {
4387 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4394 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4403 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4404 const u8 *peer_dev_addr)
4406 struct wpa_bss *bss;
4409 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4412 if (bss->last_update_idx < wpa_s->bss_update_idx) {
4413 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4418 updated = os_reltime_before(&wpa_s->p2p_auto_started,
4420 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4421 "%ld.%06ld (%supdated in last scan)",
4422 bss->last_update.sec, bss->last_update.usec,
4423 updated ? "": "not ");
4429 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4430 struct wpa_scan_results *scan_res)
4432 struct wpa_bss *bss = NULL;
4434 u8 iface_addr[ETH_ALEN];
4436 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4438 if (wpa_s->global->p2p_disabled)
4441 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4442 scan_res ? (int) scan_res->num : -1,
4443 wpa_s->p2p_auto_join ? "auto_" : "");
4446 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4448 if (wpa_s->p2p_auto_pd) {
4449 int join = wpas_p2p_peer_go(wpa_s,
4450 wpa_s->pending_join_dev_addr);
4452 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4453 wpa_s->auto_pd_scan_retry++;
4454 bss = wpa_bss_get_bssid_latest(
4455 wpa_s, wpa_s->pending_join_dev_addr);
4458 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4459 "the peer " MACSTR " at %d MHz",
4460 wpa_s->auto_pd_scan_retry,
4462 pending_join_dev_addr),
4464 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4472 wpa_s->p2p_auto_pd = 0;
4473 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4474 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4475 MAC2STR(wpa_s->pending_join_dev_addr), join);
4476 if (p2p_prov_disc_req(wpa_s->global->p2p,
4477 wpa_s->pending_join_dev_addr,
4478 wpa_s->pending_pd_config_methods, join,
4479 0, wpa_s->user_initiated_pd) < 0) {
4480 wpa_s->p2p_auto_pd = 0;
4481 wpa_msg_global(wpa_s, MSG_INFO,
4482 P2P_EVENT_PROV_DISC_FAILURE
4483 " p2p_dev_addr=" MACSTR " status=N/A",
4484 MAC2STR(wpa_s->pending_join_dev_addr));
4489 if (wpa_s->p2p_auto_join) {
4490 int join = wpas_p2p_peer_go(wpa_s,
4491 wpa_s->pending_join_dev_addr);
4493 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4494 "running a GO -> use GO Negotiation");
4495 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4496 wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4497 wpa_s->p2p_persistent_group, 0, 0, 0,
4498 wpa_s->p2p_go_intent,
4499 wpa_s->p2p_connect_freq,
4500 wpa_s->p2p_persistent_id,
4501 wpa_s->p2p_pd_before_go_neg,
4507 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4508 "try to join the group", join ? "" :
4511 wpa_s->p2p_fallback_to_go_neg = 1;
4514 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4515 wpa_s->pending_join_iface_addr);
4517 p2p_get_interface_addr(wpa_s->global->p2p,
4518 wpa_s->pending_join_dev_addr,
4520 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4521 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4522 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4523 "address for join from " MACSTR " to " MACSTR
4524 " based on newly discovered P2P peer entry",
4525 MAC2STR(wpa_s->pending_join_iface_addr),
4526 MAC2STR(iface_addr));
4527 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4530 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4531 wpa_s->pending_join_iface_addr);
4534 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4535 "from P2P peer table: %d MHz", freq);
4537 if (wpa_s->p2p_join_ssid_len) {
4538 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4539 MACSTR " and SSID %s",
4540 MAC2STR(wpa_s->pending_join_iface_addr),
4541 wpa_ssid_txt(wpa_s->p2p_join_ssid,
4542 wpa_s->p2p_join_ssid_len));
4543 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4544 wpa_s->p2p_join_ssid,
4545 wpa_s->p2p_join_ssid_len);
4548 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4549 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4550 bss = wpa_bss_get_bssid_latest(wpa_s,
4551 wpa_s->pending_join_iface_addr);
4555 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4556 "from BSS table: %d MHz (SSID %s)", freq,
4557 wpa_ssid_txt(bss->ssid, bss->ssid_len));
4562 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4563 wpa_msg_global(wpa_s->parent, MSG_INFO,
4564 P2P_EVENT_GROUP_FORMATION_FAILURE
4565 "reason=FREQ_CONFLICT");
4569 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4570 "prior to joining an existing group (GO " MACSTR
4572 MAC2STR(wpa_s->pending_join_dev_addr), freq);
4573 wpa_s->pending_pd_before_join = 1;
4575 switch (wpa_s->pending_join_wps_method) {
4576 case WPS_PIN_DISPLAY:
4577 method = WPS_CONFIG_KEYPAD;
4579 case WPS_PIN_KEYPAD:
4580 method = WPS_CONFIG_DISPLAY;
4583 method = WPS_CONFIG_PUSHBUTTON;
4590 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4591 wpa_s->pending_join_dev_addr) ==
4594 * We have already performed provision discovery for
4595 * joining the group. Proceed directly to join
4596 * operation without duplicated provision discovery. */
4597 wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4598 "with " MACSTR " already done - proceed to "
4600 MAC2STR(wpa_s->pending_join_dev_addr));
4601 wpa_s->pending_pd_before_join = 0;
4605 if (p2p_prov_disc_req(wpa_s->global->p2p,
4606 wpa_s->pending_join_dev_addr, method, 1,
4607 freq, wpa_s->user_initiated_pd) < 0) {
4608 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4609 "Discovery Request before joining an "
4611 wpa_s->pending_pd_before_join = 0;
4617 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4618 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4619 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4620 wpas_p2p_check_join_scan_limit(wpa_s);
4624 /* Start join operation immediately */
4625 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4629 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4630 const u8 *ssid, size_t ssid_len)
4633 struct wpa_driver_scan_params params;
4634 struct wpabuf *wps_ie, *ies;
4636 int freqs[2] = { 0, 0 };
4638 os_memset(¶ms, 0, sizeof(params));
4640 /* P2P Wildcard SSID */
4641 params.num_ssids = 1;
4642 if (ssid && ssid_len) {
4643 params.ssids[0].ssid = ssid;
4644 params.ssids[0].ssid_len = ssid_len;
4645 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4646 wpa_s->p2p_join_ssid_len = ssid_len;
4648 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4649 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4650 wpa_s->p2p_join_ssid_len = 0;
4653 wpa_s->wps->dev.p2p = 1;
4654 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4655 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4657 if (wps_ie == NULL) {
4658 wpas_p2p_scan_res_join(wpa_s, NULL);
4662 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4663 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4665 wpabuf_free(wps_ie);
4666 wpas_p2p_scan_res_join(wpa_s, NULL);
4669 wpabuf_put_buf(ies, wps_ie);
4670 wpabuf_free(wps_ie);
4672 p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4674 params.p2p_probe = 1;
4675 params.extra_ies = wpabuf_head(ies);
4676 params.extra_ies_len = wpabuf_len(ies);
4681 * If freq is not provided, check the operating freq of the GO
4682 * and use a single channel scan on if possible.
4684 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4685 wpa_s->pending_join_iface_addr);
4691 params.freqs = freqs;
4695 * Run a scan to update BSS table and start Provision Discovery once
4696 * the new scan results become available.
4698 ret = wpa_drv_scan(wpa_s, ¶ms);
4700 os_get_reltime(&wpa_s->scan_trigger_time);
4701 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4702 wpa_s->own_scan_requested = 1;
4708 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4710 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4711 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4712 wpas_p2p_check_join_scan_limit(wpa_s);
4717 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4719 struct wpa_supplicant *wpa_s = eloop_ctx;
4720 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4724 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4725 const u8 *dev_addr, enum p2p_wps_method wps_method,
4726 int auto_join, int op_freq,
4727 const u8 *ssid, size_t ssid_len)
4729 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4730 MACSTR " dev " MACSTR " op_freq=%d)%s",
4731 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4732 auto_join ? " (auto_join)" : "");
4733 if (ssid && ssid_len) {
4734 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4735 wpa_ssid_txt(ssid, ssid_len));
4738 wpa_s->p2p_auto_pd = 0;
4739 wpa_s->p2p_auto_join = !!auto_join;
4740 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4741 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4742 wpa_s->pending_join_wps_method = wps_method;
4744 /* Make sure we are not running find during connection establishment */
4745 wpas_p2p_stop_find(wpa_s);
4747 wpa_s->p2p_join_scan_count = 0;
4748 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4753 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4754 const u8 *ssid, size_t ssid_len)
4756 struct wpa_supplicant *group;
4757 struct p2p_go_neg_results res;
4758 struct wpa_bss *bss;
4760 group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4763 if (group != wpa_s) {
4764 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4765 sizeof(group->p2p_pin));
4766 group->p2p_wps_method = wpa_s->p2p_wps_method;
4769 * Need to mark the current interface for p2p_group_formation
4770 * when a separate group interface is not used. This is needed
4771 * to allow p2p_cancel stop a pending p2p_connect-join.
4772 * wpas_p2p_init_group_interface() addresses this for the case
4773 * where a separate group interface is used.
4775 wpa_s->global->p2p_group_formation = wpa_s;
4778 group->p2p_in_provisioning = 1;
4779 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4781 os_memset(&res, 0, sizeof(res));
4782 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4783 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4785 res.wps_method = wpa_s->pending_join_wps_method;
4786 if (freq && ssid && ssid_len) {
4788 res.ssid_len = ssid_len;
4789 os_memcpy(res.ssid, ssid, ssid_len);
4791 bss = wpa_bss_get_bssid_latest(wpa_s,
4792 wpa_s->pending_join_iface_addr);
4794 res.freq = bss->freq;
4795 res.ssid_len = bss->ssid_len;
4796 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4797 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4799 wpa_ssid_txt(bss->ssid, bss->ssid_len));
4803 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4804 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4806 wpa_drv_cancel_remain_on_channel(wpa_s);
4807 wpa_s->off_channel_freq = 0;
4808 wpa_s->roc_waiting_drv_freq = 0;
4810 wpas_start_wps_enrollee(group, &res);
4813 * Allow a longer timeout for join-a-running-group than normal 15
4814 * second group formation timeout since the GO may not have authorized
4815 * our connection yet.
4817 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4818 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4825 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4826 int *force_freq, int *pref_freq, int go)
4828 struct wpa_used_freq_data *freqs;
4829 int res, best_freq, num_unused;
4830 unsigned int freq_in_use = 0, num, i;
4832 freqs = os_calloc(wpa_s->num_multichan_concurrent,
4833 sizeof(struct wpa_used_freq_data));
4837 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4838 wpa_s->num_multichan_concurrent);
4841 * It is possible that the total number of used frequencies is bigger
4842 * than the number of frequencies used for P2P, so get the system wide
4843 * number of unused frequencies.
4845 num_unused = wpas_p2p_num_unused_channels(wpa_s);
4847 wpa_printf(MSG_DEBUG,
4848 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4849 freq, wpa_s->num_multichan_concurrent, num, num_unused);
4854 ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4856 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4858 wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4859 "(%u MHz) is not supported for P2P uses",
4865 for (i = 0; i < num; i++) {
4866 if (freqs[i].freq == freq)
4870 if (num_unused <= 0 && !freq_in_use) {
4871 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4876 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4877 "requested channel (%u MHz)", freq);
4882 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4884 /* We have a candidate frequency to use */
4885 if (best_freq > 0) {
4886 if (*pref_freq == 0 && num_unused > 0) {
4887 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4889 *pref_freq = best_freq;
4891 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4893 *force_freq = best_freq;
4895 } else if (num_unused > 0) {
4896 wpa_printf(MSG_DEBUG,
4897 "P2P: Current operating channels are not available for P2P. Try to use another channel");
4900 wpa_printf(MSG_DEBUG,
4901 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4915 * wpas_p2p_connect - Request P2P Group Formation to be started
4916 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4917 * @peer_addr: Address of the peer P2P Device
4918 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4919 * @persistent_group: Whether to create a persistent group
4920 * @auto_join: Whether to select join vs. GO Negotiation automatically
4921 * @join: Whether to join an existing group (as a client) instead of starting
4922 * Group Owner negotiation; @peer_addr is BSSID in that case
4923 * @auth: Whether to only authorize the connection instead of doing that and
4924 * initiating Group Owner negotiation
4925 * @go_intent: GO Intent or -1 to use default
4926 * @freq: Frequency for the group or 0 for auto-selection
4927 * @persistent_id: Persistent group credentials to use for forcing GO
4928 * parameters or -1 to generate new values (SSID/passphrase)
4929 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4930 * interoperability workaround when initiating group formation
4931 * @ht40: Start GO with 40 MHz channel width
4932 * @vht: Start GO with VHT support
4933 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4934 * failure, -2 on failure due to channel not currently available,
4935 * -3 if forced channel is not supported
4937 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4938 const char *pin, enum p2p_wps_method wps_method,
4939 int persistent_group, int auto_join, int join, int auth,
4940 int go_intent, int freq, int persistent_id, int pd,
4943 int force_freq = 0, pref_freq = 0;
4945 enum wpa_driver_if_type iftype;
4947 struct wpa_ssid *ssid = NULL;
4949 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4952 if (persistent_id >= 0) {
4953 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4954 if (ssid == NULL || ssid->disabled != 2 ||
4955 ssid->mode != WPAS_MODE_P2P_GO)
4959 os_free(wpa_s->global->add_psk);
4960 wpa_s->global->add_psk = NULL;
4962 wpa_s->global->p2p_fail_on_wps_complete = 0;
4965 go_intent = wpa_s->conf->p2p_go_intent;
4968 wpa_s->p2p_long_listen = 0;
4970 wpa_s->p2p_wps_method = wps_method;
4971 wpa_s->p2p_persistent_group = !!persistent_group;
4972 wpa_s->p2p_persistent_id = persistent_id;
4973 wpa_s->p2p_go_intent = go_intent;
4974 wpa_s->p2p_connect_freq = freq;
4975 wpa_s->p2p_fallback_to_go_neg = 0;
4976 wpa_s->p2p_pd_before_go_neg = !!pd;
4977 wpa_s->p2p_go_ht40 = !!ht40;
4978 wpa_s->p2p_go_vht = !!vht;
4981 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4982 else if (wps_method == WPS_PIN_DISPLAY) {
4983 ret = wps_generate_pin();
4984 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
4986 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
4987 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
4988 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4991 wpa_s->p2p_pin[0] = '\0';
4993 if (join || auto_join) {
4994 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4996 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4997 "connect a running group from " MACSTR,
4998 MAC2STR(peer_addr));
4999 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5002 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5003 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5005 os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5006 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5010 os_get_reltime(&wpa_s->p2p_auto_started);
5011 wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5013 wpa_s->p2p_auto_started.sec,
5014 wpa_s->p2p_auto_started.usec);
5016 wpa_s->user_initiated_pd = 1;
5017 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5018 auto_join, freq, NULL, 0) < 0)
5023 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5027 wpas_p2p_set_own_freq_preference(wpa_s,
5028 force_freq ? force_freq : pref_freq);
5030 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5032 if (wpa_s->create_p2p_iface) {
5033 /* Prepare to add a new interface for the group */
5034 iftype = WPA_IF_P2P_GROUP;
5035 if (go_intent == 15)
5036 iftype = WPA_IF_P2P_GO;
5037 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5038 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5039 "interface for the group");
5043 if_addr = wpa_s->pending_interface_addr;
5045 if_addr = wpa_s->own_addr;
5048 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5050 force_freq, persistent_group, ssid,
5056 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5057 go_intent, if_addr, force_freq,
5058 persistent_group, ssid, pref_freq) < 0) {
5059 if (wpa_s->create_p2p_iface)
5060 wpas_p2p_remove_pending_group_interface(wpa_s);
5068 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5069 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5070 * @freq: Frequency of the channel in MHz
5071 * @duration: Duration of the stay on the channel in milliseconds
5073 * This callback is called when the driver indicates that it has started the
5074 * requested remain-on-channel duration.
5076 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5077 unsigned int freq, unsigned int duration)
5079 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5081 if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5082 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5083 wpa_s->pending_listen_duration);
5084 wpa_s->pending_listen_freq = 0;
5086 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5087 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5093 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
5094 unsigned int timeout)
5096 /* Limit maximum Listen state time based on driver limitation. */
5097 if (timeout > wpa_s->max_remain_on_chan)
5098 timeout = wpa_s->max_remain_on_chan;
5100 return p2p_listen(wpa_s->global->p2p, timeout);
5105 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5106 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5107 * @freq: Frequency of the channel in MHz
5109 * This callback is called when the driver indicates that a remain-on-channel
5110 * operation has been completed, i.e., the duration on the requested channel
5113 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5116 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5117 "(p2p_long_listen=%d ms pending_action_tx=%p)",
5118 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5119 wpas_p2p_listen_work_done(wpa_s);
5120 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5122 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5123 return; /* P2P module started a new operation */
5124 if (offchannel_pending_action_tx(wpa_s))
5126 if (wpa_s->p2p_long_listen > 0)
5127 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5128 if (wpa_s->p2p_long_listen > 0) {
5129 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5130 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5133 * When listen duration is over, stop listen & update p2p_state
5136 p2p_stop_listen(wpa_s->global->p2p);
5142 * wpas_p2p_group_remove - Remove a P2P group
5143 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5144 * @ifname: Network interface name of the group interface or "*" to remove all
5146 * Returns: 0 on success, -1 on failure
5148 * This function is used to remove a P2P group. This can be used to disconnect
5149 * from a group in which the local end is a P2P Client or to end a P2P Group in
5150 * case the local end is the Group Owner. If a virtual network interface was
5151 * created for this group, that interface will be removed. Otherwise, only the
5152 * configured P2P group network will be removed from the interface.
5154 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5156 struct wpa_global *global = wpa_s->global;
5157 struct wpa_supplicant *calling_wpa_s = wpa_s;
5159 if (os_strcmp(ifname, "*") == 0) {
5160 struct wpa_supplicant *prev;
5161 wpa_s = global->ifaces;
5164 wpa_s = wpa_s->next;
5165 if (prev->p2p_group_interface !=
5166 NOT_P2P_GROUP_INTERFACE ||
5167 (prev->current_ssid &&
5168 prev->current_ssid->p2p_group))
5169 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5174 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5175 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5179 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5183 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5188 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5190 if (wpa_s->best_24_freq > 0 &&
5191 p2p_supported_freq_go(wpa_s->global->p2p,
5192 wpa_s->best_24_freq)) {
5193 freq = wpa_s->best_24_freq;
5194 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5195 "channel: %d MHz", freq);
5197 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5199 freq = 2412 + (r % 3) * 25;
5200 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5201 "channel: %d MHz", freq);
5206 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5208 if (wpa_s->best_5_freq > 0 &&
5209 p2p_supported_freq_go(wpa_s->global->p2p,
5210 wpa_s->best_5_freq)) {
5211 freq = wpa_s->best_5_freq;
5212 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5213 "channel: %d MHz", freq);
5215 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5217 freq = 5180 + (r % 4) * 20;
5218 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5219 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5220 "5 GHz channel for P2P group");
5223 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5224 "channel: %d MHz", freq);
5228 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5229 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5230 "(%u MHz) is not supported for P2P uses",
5239 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
5240 struct p2p_go_neg_results *params,
5241 const struct p2p_channels *channels)
5245 /* first try some random selection of the social channels */
5246 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5249 for (i = 0; i < 3; i++) {
5250 params->freq = 2412 + ((r + i) % 3) * 25;
5251 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5252 freq_included(channels, params->freq) &&
5253 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5257 /* try all channels in reg. class 81 */
5258 for (i = 0; i < 11; i++) {
5259 params->freq = 2412 + i * 5;
5260 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5261 freq_included(channels, params->freq) &&
5262 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5266 /* try social channel class 180 channel 2 */
5267 params->freq = 58320 + 1 * 2160;
5268 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5269 freq_included(channels, params->freq) &&
5270 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5273 /* try all channels in reg. class 180 */
5274 for (i = 0; i < 4; i++) {
5275 params->freq = 58320 + i * 2160;
5276 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5277 freq_included(channels, params->freq) &&
5278 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5282 wpa_printf(MSG_DEBUG, "P2P: No 2.4 and 60 GHz channel allowed");
5285 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5291 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5292 struct p2p_go_neg_results *params,
5293 int freq, int ht40, int vht,
5294 const struct p2p_channels *channels)
5296 struct wpa_used_freq_data *freqs;
5297 unsigned int pref_freq, cand_freq;
5298 unsigned int num, i;
5300 os_memset(params, 0, sizeof(*params));
5301 params->role_go = 1;
5302 params->ht40 = ht40;
5305 if (!freq_included(channels, freq)) {
5306 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
5310 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
5311 "frequency %d MHz", freq);
5312 params->freq = freq;
5313 } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5314 wpa_s->conf->p2p_oper_channel >= 1 &&
5315 wpa_s->conf->p2p_oper_channel <= 11 &&
5316 freq_included(channels,
5317 2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5318 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5319 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5320 "frequency %d MHz", params->freq);
5321 } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5322 wpa_s->conf->p2p_oper_reg_class == 116 ||
5323 wpa_s->conf->p2p_oper_reg_class == 117 ||
5324 wpa_s->conf->p2p_oper_reg_class == 124 ||
5325 wpa_s->conf->p2p_oper_reg_class == 126 ||
5326 wpa_s->conf->p2p_oper_reg_class == 127) &&
5327 freq_included(channels,
5328 5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5329 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5330 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5331 "frequency %d MHz", params->freq);
5332 } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5333 wpa_s->best_overall_freq > 0 &&
5334 p2p_supported_freq_go(wpa_s->global->p2p,
5335 wpa_s->best_overall_freq) &&
5336 freq_included(channels, wpa_s->best_overall_freq)) {
5337 params->freq = wpa_s->best_overall_freq;
5338 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5339 "channel %d MHz", params->freq);
5340 } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5341 wpa_s->best_24_freq > 0 &&
5342 p2p_supported_freq_go(wpa_s->global->p2p,
5343 wpa_s->best_24_freq) &&
5344 freq_included(channels, wpa_s->best_24_freq)) {
5345 params->freq = wpa_s->best_24_freq;
5346 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5347 "channel %d MHz", params->freq);
5348 } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5349 wpa_s->best_5_freq > 0 &&
5350 p2p_supported_freq_go(wpa_s->global->p2p,
5351 wpa_s->best_5_freq) &&
5352 freq_included(channels, wpa_s->best_5_freq)) {
5353 params->freq = wpa_s->best_5_freq;
5354 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5355 "channel %d MHz", params->freq);
5356 } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5358 params->freq = pref_freq;
5359 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5360 "channels", params->freq);
5362 /* no preference, select some channel */
5363 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
5367 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5368 sizeof(struct wpa_used_freq_data));
5372 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5373 wpa_s->num_multichan_concurrent);
5375 cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5377 /* First try the best used frequency if possible */
5378 if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
5379 params->freq = cand_freq;
5381 /* Try any of the used frequencies */
5382 for (i = 0; i < num; i++) {
5383 if (freq_included(channels, freqs[i].freq)) {
5384 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5386 params->freq = freqs[i].freq;
5392 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5393 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5397 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5401 for (i = 0; i < num; i++) {
5402 if (freqs[i].freq == freq)
5407 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5409 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5413 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5423 static struct wpa_supplicant *
5424 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5427 struct wpa_supplicant *group_wpa_s;
5429 if (!wpas_p2p_create_iface(wpa_s)) {
5430 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5432 wpa_s->p2p_first_connection_timeout = 0;
5436 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5437 WPA_IF_P2P_CLIENT) < 0) {
5438 wpa_msg_global(wpa_s, MSG_ERROR,
5439 "P2P: Failed to add group interface");
5442 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5443 if (group_wpa_s == NULL) {
5444 wpa_msg_global(wpa_s, MSG_ERROR,
5445 "P2P: Failed to initialize group interface");
5446 wpas_p2p_remove_pending_group_interface(wpa_s);
5450 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5451 group_wpa_s->ifname);
5452 group_wpa_s->p2p_first_connection_timeout = 0;
5458 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5459 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5460 * @persistent_group: Whether to create a persistent group
5461 * @freq: Frequency for the group or 0 to indicate no hardcoding
5462 * @ht40: Start GO with 40 MHz channel width
5463 * @vht: Start GO with VHT support
5464 * Returns: 0 on success, -1 on failure
5466 * This function creates a new P2P group with the local end as the Group Owner,
5467 * i.e., without using Group Owner Negotiation.
5469 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5470 int freq, int ht40, int vht)
5472 struct p2p_go_neg_results params;
5474 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5477 os_free(wpa_s->global->add_psk);
5478 wpa_s->global->add_psk = NULL;
5480 /* Make sure we are not running find during connection establishment */
5481 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5482 wpas_p2p_stop_find_oper(wpa_s);
5484 freq = wpas_p2p_select_go_freq(wpa_s, freq);
5488 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40, vht, NULL))
5491 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5492 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
5493 "(%u MHz) is not supported for P2P uses",
5497 p2p_go_params(wpa_s->global->p2p, ¶ms);
5498 params.persistent_group = persistent_group;
5500 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5503 wpas_start_wps_go(wpa_s, ¶ms, 0);
5509 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5510 struct wpa_ssid *params, int addr_allocated,
5513 struct wpa_ssid *ssid;
5515 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5518 wpa_s->p2p_last_4way_hs_fail = NULL;
5520 wpa_supplicant_ap_deinit(wpa_s);
5522 ssid = wpa_config_add_network(wpa_s->conf);
5525 wpa_config_set_network_defaults(ssid);
5526 ssid->temporary = 1;
5527 ssid->proto = WPA_PROTO_RSN;
5528 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5529 ssid->group_cipher = WPA_CIPHER_CCMP;
5530 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5531 ssid->ssid = os_malloc(params->ssid_len);
5532 if (ssid->ssid == NULL) {
5533 wpa_config_remove_network(wpa_s->conf, ssid->id);
5536 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5537 ssid->ssid_len = params->ssid_len;
5538 ssid->p2p_group = 1;
5539 ssid->export_keys = 1;
5540 if (params->psk_set) {
5541 os_memcpy(ssid->psk, params->psk, 32);
5544 if (params->passphrase)
5545 ssid->passphrase = os_strdup(params->passphrase);
5547 wpa_s->show_group_started = 1;
5548 wpa_s->p2p_in_invitation = 1;
5549 wpa_s->p2p_invite_go_freq = freq;
5551 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5553 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5554 wpas_p2p_group_formation_timeout,
5555 wpa_s->parent, NULL);
5556 wpa_supplicant_select_network(wpa_s, ssid);
5562 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5563 struct wpa_ssid *ssid, int addr_allocated,
5564 int force_freq, int neg_freq, int ht40,
5565 int vht, const struct p2p_channels *channels,
5566 int connection_timeout)
5568 struct p2p_go_neg_results params;
5571 if (ssid->disabled != 2 || ssid->ssid == NULL)
5574 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5575 go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5576 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5581 os_free(wpa_s->global->add_psk);
5582 wpa_s->global->add_psk = NULL;
5584 /* Make sure we are not running find during connection establishment */
5585 wpas_p2p_stop_find_oper(wpa_s);
5587 wpa_s->p2p_fallback_to_go_neg = 0;
5589 if (ssid->mode == WPAS_MODE_P2P_GO) {
5590 if (force_freq > 0) {
5591 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5595 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5597 (freq > 0 && !freq_included(channels, freq)))
5603 (freq > 0 && !freq_included(channels, freq)))
5607 if (ssid->mode == WPAS_MODE_INFRA)
5608 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5610 if (ssid->mode != WPAS_MODE_P2P_GO)
5613 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40, vht, channels))
5617 params.psk_set = ssid->psk_set;
5619 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5620 if (ssid->passphrase) {
5621 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5622 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5623 "persistent group");
5626 os_strlcpy(params.passphrase, ssid->passphrase,
5627 sizeof(params.passphrase));
5629 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5630 params.ssid_len = ssid->ssid_len;
5631 params.persistent_group = 1;
5633 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5637 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
5639 wpa_s->p2p_first_connection_timeout = connection_timeout;
5640 wpas_start_wps_go(wpa_s, ¶ms, 0);
5646 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5647 struct wpabuf *proberesp_ies)
5649 struct wpa_supplicant *wpa_s = ctx;
5650 if (wpa_s->ap_iface) {
5651 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5652 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5653 wpabuf_free(beacon_ies);
5654 wpabuf_free(proberesp_ies);
5658 wpabuf_free(hapd->p2p_beacon_ie);
5659 hapd->p2p_beacon_ie = beacon_ies;
5661 wpabuf_free(hapd->p2p_probe_resp_ie);
5662 hapd->p2p_probe_resp_ie = proberesp_ies;
5664 wpabuf_free(beacon_ies);
5665 wpabuf_free(proberesp_ies);
5667 wpa_supplicant_ap_update_beacon(wpa_s);
5671 static void wpas_p2p_idle_update(void *ctx, int idle)
5673 struct wpa_supplicant *wpa_s = ctx;
5674 if (!wpa_s->ap_iface)
5676 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5678 if (wpa_s->global->p2p_fail_on_wps_complete &&
5679 wpa_s->p2p_in_provisioning) {
5680 wpas_p2p_grpform_fail_after_wps(wpa_s);
5683 wpas_p2p_set_group_idle_timeout(wpa_s);
5685 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5689 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5690 struct wpa_ssid *ssid)
5692 struct p2p_group *group;
5693 struct p2p_group_config *cfg;
5695 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5698 cfg = os_zalloc(sizeof(*cfg));
5702 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5703 cfg->persistent_group = 2;
5704 else if (ssid->p2p_persistent_group)
5705 cfg->persistent_group = 1;
5706 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5707 if (wpa_s->max_stations &&
5708 wpa_s->max_stations < wpa_s->conf->max_num_sta)
5709 cfg->max_clients = wpa_s->max_stations;
5711 cfg->max_clients = wpa_s->conf->max_num_sta;
5712 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5713 cfg->ssid_len = ssid->ssid_len;
5714 cfg->freq = ssid->frequency;
5715 cfg->cb_ctx = wpa_s;
5716 cfg->ie_update = wpas_p2p_ie_update;
5717 cfg->idle_update = wpas_p2p_idle_update;
5719 group = p2p_group_init(wpa_s->global->p2p, cfg);
5722 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5723 p2p_group_notif_formation_done(group);
5724 wpa_s->p2p_group = group;
5729 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5732 struct wpa_ssid *ssid = wpa_s->current_ssid;
5734 if (!wpa_s->p2p_in_provisioning) {
5735 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5736 "provisioning not in progress");
5740 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5741 u8 go_dev_addr[ETH_ALEN];
5742 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5743 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5745 /* Clear any stored provisioning info */
5746 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5749 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5751 wpa_s->p2p_go_group_formation_completed = 1;
5752 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5754 * Use a separate timeout for initial data connection to
5755 * complete to allow the group to be removed automatically if
5756 * something goes wrong in this step before the P2P group idle
5757 * timeout mechanism is taken into use.
5759 wpa_dbg(wpa_s, MSG_DEBUG,
5760 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5761 P2P_MAX_INITIAL_CONN_WAIT);
5762 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5763 wpas_p2p_group_formation_timeout,
5764 wpa_s->parent, NULL);
5767 * Use a separate timeout for initial data connection to
5768 * complete to allow the group to be removed automatically if
5769 * the client does not complete data connection successfully.
5771 wpa_dbg(wpa_s, MSG_DEBUG,
5772 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5773 P2P_MAX_INITIAL_CONN_WAIT_GO);
5774 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5775 wpas_p2p_group_formation_timeout,
5776 wpa_s->parent, NULL);
5778 * Complete group formation on first successful data connection
5780 wpa_s->p2p_go_group_formation_completed = 0;
5782 if (wpa_s->global->p2p)
5783 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5784 wpas_group_formation_completed(wpa_s, 1);
5788 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5789 struct wps_event_fail *fail)
5791 if (!wpa_s->p2p_in_provisioning) {
5792 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5793 "provisioning not in progress");
5797 if (wpa_s->go_params) {
5798 p2p_clear_provisioning_info(
5800 wpa_s->go_params->peer_device_addr);
5803 wpas_notify_p2p_wps_failed(wpa_s, fail);
5805 if (wpa_s == wpa_s->global->p2p_group_formation) {
5807 * Allow some time for the failed WPS negotiation exchange to
5808 * complete, but remove the group since group formation cannot
5809 * succeed after provisioning failure.
5811 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5812 wpa_s->global->p2p_fail_on_wps_complete = 1;
5813 eloop_deplete_timeout(0, 50000,
5814 wpas_p2p_group_formation_timeout,
5815 wpa_s->parent, NULL);
5820 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5822 if (!wpa_s->global->p2p_fail_on_wps_complete ||
5823 !wpa_s->p2p_in_provisioning)
5826 wpas_p2p_grpform_fail_after_wps(wpa_s);
5832 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5833 const char *config_method,
5834 enum wpas_p2p_prov_disc_use use)
5838 wpa_s->p2p_fallback_to_go_neg = 0;
5839 wpa_s->pending_pd_use = NORMAL_PD;
5840 if (os_strncmp(config_method, "display", 7) == 0)
5841 config_methods = WPS_CONFIG_DISPLAY;
5842 else if (os_strncmp(config_method, "keypad", 6) == 0)
5843 config_methods = WPS_CONFIG_KEYPAD;
5844 else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5845 os_strncmp(config_method, "pushbutton", 10) == 0)
5846 config_methods = WPS_CONFIG_PUSHBUTTON;
5848 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5852 if (use == WPAS_P2P_PD_AUTO) {
5853 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5854 wpa_s->pending_pd_config_methods = config_methods;
5855 wpa_s->p2p_auto_pd = 1;
5856 wpa_s->p2p_auto_join = 0;
5857 wpa_s->pending_pd_before_join = 0;
5858 wpa_s->auto_pd_scan_retry = 0;
5859 wpas_p2p_stop_find(wpa_s);
5860 wpa_s->p2p_join_scan_count = 0;
5861 os_get_reltime(&wpa_s->p2p_auto_started);
5862 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5863 wpa_s->p2p_auto_started.sec,
5864 wpa_s->p2p_auto_started.usec);
5865 wpas_p2p_join_scan(wpa_s, NULL);
5869 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
5872 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
5873 config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5878 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5881 return p2p_scan_result_text(ies, ies_len, buf, end);
5885 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5887 if (!offchannel_pending_action_tx(wpa_s))
5890 wpas_p2p_action_tx_clear(wpa_s);
5892 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5893 "operation request");
5894 offchannel_clear_pending_action_tx(wpa_s);
5898 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5899 enum p2p_discovery_type type,
5900 unsigned int num_req_dev_types, const u8 *req_dev_types,
5901 const u8 *dev_id, unsigned int search_delay)
5903 wpas_p2p_clear_pending_action_tx(wpa_s);
5904 wpa_s->p2p_long_listen = 0;
5906 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5907 wpa_s->p2p_in_provisioning)
5910 wpa_supplicant_cancel_sched_scan(wpa_s);
5912 return p2p_find(wpa_s->global->p2p, timeout, type,
5913 num_req_dev_types, req_dev_types, dev_id,
5918 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
5919 struct wpa_scan_results *scan_res)
5921 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5923 if (wpa_s->p2p_scan_work) {
5924 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
5925 wpa_s->p2p_scan_work = NULL;
5926 radio_work_done(work);
5929 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5933 * Indicate that results have been processed so that the P2P module can
5934 * continue pending tasks.
5936 p2p_scan_res_handled(wpa_s->global->p2p);
5940 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5942 wpas_p2p_clear_pending_action_tx(wpa_s);
5943 wpa_s->p2p_long_listen = 0;
5944 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5945 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5947 if (wpa_s->global->p2p)
5948 p2p_stop_find(wpa_s->global->p2p);
5950 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
5951 wpa_printf(MSG_DEBUG,
5952 "P2P: Do not consider the scan results after stop_find");
5953 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
5958 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5960 wpas_p2p_stop_find_oper(wpa_s);
5961 wpas_p2p_remove_pending_group_interface(wpa_s);
5965 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5967 struct wpa_supplicant *wpa_s = eloop_ctx;
5968 wpa_s->p2p_long_listen = 0;
5972 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5976 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5979 wpa_supplicant_cancel_sched_scan(wpa_s);
5980 wpas_p2p_clear_pending_action_tx(wpa_s);
5984 * This is a request for unlimited Listen state. However, at
5985 * least for now, this is mapped to a Listen state for one
5990 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5991 wpa_s->p2p_long_listen = 0;
5994 * Stop previous find/listen operation to avoid trying to request a new
5995 * remain-on-channel operation while the driver is still running the
5998 if (wpa_s->global->p2p)
5999 p2p_stop_find(wpa_s->global->p2p);
6001 res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6002 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6003 wpa_s->p2p_long_listen = timeout * 1000;
6004 eloop_register_timeout(timeout, 0,
6005 wpas_p2p_long_listen_timeout,
6013 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6014 u8 *buf, size_t len, int p2p_group)
6016 struct wpabuf *p2p_ie;
6019 if (wpa_s->global->p2p_disabled)
6021 if (wpa_s->conf->p2p_disabled)
6023 if (wpa_s->global->p2p == NULL)
6028 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6029 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6031 wpabuf_free(p2p_ie);
6037 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6038 const u8 *dst, const u8 *bssid,
6039 const u8 *ie, size_t ie_len, int ssi_signal)
6041 if (wpa_s->global->p2p_disabled)
6043 if (wpa_s->global->p2p == NULL)
6046 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6048 case P2P_PREQ_NOT_P2P:
6049 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6052 case P2P_PREQ_MALFORMED:
6053 case P2P_PREQ_NOT_LISTEN:
6054 case P2P_PREQ_NOT_PROCESSED:
6055 default: /* make gcc happy */
6057 case P2P_PREQ_PROCESSED:
6063 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6064 const u8 *sa, const u8 *bssid,
6065 u8 category, const u8 *data, size_t len, int freq)
6067 if (wpa_s->global->p2p_disabled)
6069 if (wpa_s->global->p2p == NULL)
6072 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6077 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6079 if (wpa_s->global->p2p_disabled)
6081 if (wpa_s->global->p2p == NULL)
6084 p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6088 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6090 p2p_group_deinit(wpa_s->p2p_group);
6091 wpa_s->p2p_group = NULL;
6093 wpa_s->ap_configured_cb = NULL;
6094 wpa_s->ap_configured_cb_ctx = NULL;
6095 wpa_s->ap_configured_cb_data = NULL;
6096 wpa_s->connect_without_scan = NULL;
6100 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6102 wpa_s->p2p_long_listen = 0;
6104 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6107 return p2p_reject(wpa_s->global->p2p, addr);
6111 /* Invite to reinvoke a persistent group */
6112 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6113 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6114 int ht40, int vht, int pref_freq)
6116 enum p2p_invite_role role;
6120 int no_pref_freq_given = pref_freq == 0;
6122 wpa_s->global->p2p_invite_group = NULL;
6124 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6126 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6128 wpa_s->p2p_persistent_go_freq = freq;
6129 wpa_s->p2p_go_ht40 = !!ht40;
6130 if (ssid->mode == WPAS_MODE_P2P_GO) {
6131 role = P2P_INVITE_ROLE_GO;
6132 if (peer_addr == NULL) {
6133 wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6134 "address in invitation command");
6137 if (wpas_p2p_create_iface(wpa_s)) {
6138 if (wpas_p2p_add_group_interface(wpa_s,
6139 WPA_IF_P2P_GO) < 0) {
6140 wpa_printf(MSG_ERROR, "P2P: Failed to "
6141 "allocate a new interface for the "
6145 bssid = wpa_s->pending_interface_addr;
6147 bssid = wpa_s->own_addr;
6149 role = P2P_INVITE_ROLE_CLIENT;
6150 peer_addr = ssid->bssid;
6152 wpa_s->pending_invite_ssid_id = ssid->id;
6154 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6155 role == P2P_INVITE_ROLE_GO);
6159 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6162 if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6163 no_pref_freq_given && pref_freq > 0 &&
6164 wpa_s->num_multichan_concurrent > 1 &&
6165 wpas_p2p_num_unused_channels(wpa_s) > 0) {
6166 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6171 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6172 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6177 /* Invite to join an active group */
6178 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6179 const u8 *peer_addr, const u8 *go_dev_addr)
6181 struct wpa_global *global = wpa_s->global;
6182 enum p2p_invite_role role;
6184 struct wpa_ssid *ssid;
6186 int freq = 0, force_freq = 0, pref_freq = 0;
6189 wpa_s->p2p_persistent_go_freq = 0;
6190 wpa_s->p2p_go_ht40 = 0;
6191 wpa_s->p2p_go_vht = 0;
6193 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6194 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6197 if (wpa_s == NULL) {
6198 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6202 ssid = wpa_s->current_ssid;
6204 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6209 wpa_s->global->p2p_invite_group = wpa_s;
6210 persistent = ssid->p2p_persistent_group &&
6211 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6212 ssid->ssid, ssid->ssid_len);
6214 if (ssid->mode == WPAS_MODE_P2P_GO) {
6215 role = P2P_INVITE_ROLE_ACTIVE_GO;
6216 bssid = wpa_s->own_addr;
6217 if (go_dev_addr == NULL)
6218 go_dev_addr = wpa_s->global->p2p_dev_addr;
6219 freq = ssid->frequency;
6221 role = P2P_INVITE_ROLE_CLIENT;
6222 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6223 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6224 "invite to current group");
6227 bssid = wpa_s->bssid;
6228 if (go_dev_addr == NULL &&
6229 !is_zero_ether_addr(wpa_s->go_dev_addr))
6230 go_dev_addr = wpa_s->go_dev_addr;
6231 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6232 (int) wpa_s->assoc_freq;
6234 wpa_s->parent->pending_invite_ssid_id = -1;
6236 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6239 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6240 role == P2P_INVITE_ROLE_ACTIVE_GO);
6243 wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6245 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6246 ssid->ssid, ssid->ssid_len, force_freq,
6247 go_dev_addr, persistent, pref_freq, -1);
6251 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6253 struct wpa_ssid *ssid = wpa_s->current_ssid;
6254 u8 go_dev_addr[ETH_ALEN];
6255 int network_id = -1;
6261 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6262 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6263 wpa_s->parent, NULL);
6266 if (!wpa_s->show_group_started || !ssid)
6269 wpa_s->show_group_started = 0;
6271 os_memset(go_dev_addr, 0, ETH_ALEN);
6272 if (ssid->bssid_set)
6273 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6274 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6276 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6278 if (wpa_s->global->p2p_group_formation == wpa_s)
6279 wpa_s->global->p2p_group_formation = NULL;
6281 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6282 (int) wpa_s->assoc_freq;
6285 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6288 res = os_snprintf(ip_addr, sizeof(ip_addr),
6289 " ip_addr=%u.%u.%u.%u "
6290 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6291 ip[0], ip[1], ip[2], ip[3],
6292 ip[4], ip[5], ip[6], ip[7],
6293 ip[8], ip[9], ip[10], ip[11]);
6294 if (os_snprintf_error(sizeof(ip_addr), res))
6298 wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6299 ssid->passphrase == NULL && ssid->psk_set ?
6301 ssid->passphrase, go_dev_addr, persistent,
6305 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6308 network_id = ssid->id;
6309 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6313 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6314 u32 interval1, u32 duration2, u32 interval2)
6318 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6321 if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6322 wpa_s->current_ssid == NULL ||
6323 wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6326 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6327 wpa_s->own_addr, wpa_s->assoc_freq,
6328 duration1, interval1, duration2, interval2);
6330 wpa_s->waiting_presence_resp = 1;
6336 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6337 unsigned int interval)
6339 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6342 return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6346 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6348 if (wpa_s->current_ssid == NULL) {
6350 * current_ssid can be cleared when P2P client interface gets
6351 * disconnected, so assume this interface was used as P2P
6356 return wpa_s->current_ssid->p2p_group &&
6357 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6361 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6363 struct wpa_supplicant *wpa_s = eloop_ctx;
6365 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6366 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6371 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6373 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6377 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6381 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6382 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6384 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6387 timeout = wpa_s->conf->p2p_group_idle;
6388 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6389 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6390 timeout = P2P_MAX_CLIENT_IDLE;
6396 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6397 timeout = 0; /* special client mode no-timeout */
6402 if (wpa_s->p2p_in_provisioning) {
6404 * Use the normal group formation timeout during the
6405 * provisioning phase to avoid terminating this process too
6406 * early due to group idle timeout.
6408 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6409 "during provisioning");
6413 if (wpa_s->show_group_started) {
6415 * Use the normal group formation timeout between the end of
6416 * the provisioning phase and completion of 4-way handshake to
6417 * avoid terminating this process too early due to group idle
6420 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6421 "while waiting for initial 4-way handshake to "
6426 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6428 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6433 /* Returns 1 if the interface was removed */
6434 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6435 u16 reason_code, const u8 *ie, size_t ie_len,
6436 int locally_generated)
6438 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6441 if (!locally_generated)
6442 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6445 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6446 wpa_s->current_ssid &&
6447 wpa_s->current_ssid->p2p_group &&
6448 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6449 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6450 "session is ending");
6451 if (wpas_p2p_group_delete(wpa_s,
6452 P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6461 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6462 u16 reason_code, const u8 *ie, size_t ie_len,
6463 int locally_generated)
6465 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6468 if (!locally_generated)
6469 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6474 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6476 struct p2p_data *p2p = wpa_s->global->p2p;
6481 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6484 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6485 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6487 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6488 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6491 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6492 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6494 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6495 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6497 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6498 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6499 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6500 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6501 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6504 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6505 p2p_set_sec_dev_types(p2p,
6506 (void *) wpa_s->conf->sec_device_type,
6507 wpa_s->conf->num_sec_device_types);
6509 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6511 p2p_remove_wps_vendor_extensions(p2p);
6512 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6513 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6515 p2p_add_wps_vendor_extension(
6516 p2p, wpa_s->conf->wps_vendor_ext[i]);
6520 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6521 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6523 country[0] = wpa_s->conf->country[0];
6524 country[1] = wpa_s->conf->country[1];
6526 p2p_set_country(p2p, country);
6529 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6530 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6531 wpa_s->conf->p2p_ssid_postfix ?
6532 os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6536 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6537 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6539 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6540 u8 reg_class, channel;
6545 if (wpa_s->conf->p2p_listen_reg_class &&
6546 wpa_s->conf->p2p_listen_channel) {
6547 reg_class = wpa_s->conf->p2p_listen_reg_class;
6548 channel = wpa_s->conf->p2p_listen_channel;
6553 * Pick one of the social channels randomly as the
6556 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6559 channel = 1 + (r % 3) * 5;
6562 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6565 wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6568 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6569 u8 op_reg_class, op_channel, cfg_op_channel;
6572 if (wpa_s->conf->p2p_oper_reg_class &&
6573 wpa_s->conf->p2p_oper_channel) {
6574 op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6575 op_channel = wpa_s->conf->p2p_oper_channel;
6580 * Use random operation channel from (1, 6, 11)
6581 *if no other preference is indicated.
6583 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6586 op_channel = 1 + (r % 3) * 5;
6589 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6592 wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6596 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6597 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6598 wpa_s->conf->p2p_pref_chan) < 0) {
6599 wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6603 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6604 wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6609 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6610 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6614 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6617 if (!wpa_s->ap_iface)
6619 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6624 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6626 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6629 wpa_s->global->cross_connection = enabled;
6630 p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6633 struct wpa_supplicant *iface;
6635 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6637 if (iface->cross_connect_enabled == 0)
6640 iface->cross_connect_enabled = 0;
6641 iface->cross_connect_in_use = 0;
6642 wpa_msg_global(iface->parent, MSG_INFO,
6643 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6645 iface->cross_connect_uplink);
6653 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6655 struct wpa_supplicant *iface;
6657 if (!uplink->global->cross_connection)
6660 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6661 if (!iface->cross_connect_enabled)
6663 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6666 if (iface->ap_iface == NULL)
6668 if (iface->cross_connect_in_use)
6671 iface->cross_connect_in_use = 1;
6672 wpa_msg_global(iface->parent, MSG_INFO,
6673 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6674 iface->ifname, iface->cross_connect_uplink);
6679 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6681 struct wpa_supplicant *iface;
6683 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6684 if (!iface->cross_connect_enabled)
6686 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6689 if (!iface->cross_connect_in_use)
6692 wpa_msg_global(iface->parent, MSG_INFO,
6693 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6694 iface->ifname, iface->cross_connect_uplink);
6695 iface->cross_connect_in_use = 0;
6700 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6702 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6703 wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6704 wpa_s->cross_connect_disallowed)
6705 wpas_p2p_disable_cross_connect(wpa_s);
6707 wpas_p2p_enable_cross_connect(wpa_s);
6708 if (!wpa_s->ap_iface &&
6709 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6710 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6714 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6716 wpas_p2p_disable_cross_connect(wpa_s);
6717 if (!wpa_s->ap_iface &&
6718 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6720 wpas_p2p_set_group_idle_timeout(wpa_s);
6724 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6726 struct wpa_supplicant *iface;
6728 if (!wpa_s->global->cross_connection)
6731 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6734 if (iface->drv_flags &
6735 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6737 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
6738 iface != wpa_s->parent)
6741 wpa_s->cross_connect_enabled = 1;
6742 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6743 sizeof(wpa_s->cross_connect_uplink));
6744 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6745 "%s to %s whenever uplink is available",
6746 wpa_s->ifname, wpa_s->cross_connect_uplink);
6748 if (iface->ap_iface || iface->current_ssid == NULL ||
6749 iface->current_ssid->mode != WPAS_MODE_INFRA ||
6750 iface->cross_connect_disallowed ||
6751 iface->wpa_state != WPA_COMPLETED)
6754 wpa_s->cross_connect_in_use = 1;
6755 wpa_msg_global(wpa_s->parent, MSG_INFO,
6756 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6757 wpa_s->ifname, wpa_s->cross_connect_uplink);
6763 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6765 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6766 !wpa_s->p2p_in_provisioning)
6767 return 0; /* not P2P client operation */
6769 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6771 if (wpa_s != wpa_s->parent)
6772 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6773 wpas_p2p_group_formation_failed(wpa_s);
6778 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6780 struct wpa_supplicant *wpa_s = eloop_ctx;
6781 wpas_p2p_notif_pbc_overlap(wpa_s);
6785 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6787 struct p2p_channels chan, cli_chan;
6788 struct wpa_supplicant *ifs;
6790 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6793 os_memset(&chan, 0, sizeof(chan));
6794 os_memset(&cli_chan, 0, sizeof(cli_chan));
6795 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6796 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6801 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6803 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6805 if (!ifs->current_ssid ||
6806 !ifs->current_ssid->p2p_group ||
6807 (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6808 ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6810 freq = ifs->current_ssid->frequency;
6811 if (freq_included(&chan, freq)) {
6812 wpa_dbg(ifs, MSG_DEBUG,
6813 "P2P GO operating frequency %d MHz in valid range",
6818 wpa_dbg(ifs, MSG_DEBUG,
6819 "P2P GO operating in invalid frequency %d MHz", freq);
6820 /* TODO: Consider using CSA or removing the group within
6822 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6827 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6828 struct wpa_scan_results *scan_res)
6830 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6834 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6836 struct wpa_global *global = wpa_s->global;
6840 if (global->p2p == NULL)
6843 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6845 if (wpa_s->pending_interface_name[0] &&
6846 !is_zero_ether_addr(wpa_s->pending_interface_addr))
6849 peer = p2p_get_go_neg_peer(global->p2p);
6851 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6852 MACSTR, MAC2STR(peer));
6853 p2p_unauthorize(global->p2p, peer);
6857 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6858 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6859 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6863 if (wpa_s->pending_pd_before_join) {
6864 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6865 wpa_s->pending_pd_before_join = 0;
6869 wpas_p2p_stop_find(wpa_s);
6871 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6872 if (wpa_s == global->p2p_group_formation &&
6873 (wpa_s->p2p_in_provisioning ||
6874 wpa_s->parent->pending_interface_type ==
6875 WPA_IF_P2P_CLIENT)) {
6876 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6877 "formation found - cancelling",
6880 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6881 wpa_s->parent, NULL);
6882 if (wpa_s->p2p_in_provisioning) {
6883 wpas_group_formation_completed(wpa_s, 0);
6886 wpas_p2p_group_delete(wpa_s,
6887 P2P_GROUP_REMOVAL_REQUESTED);
6889 } else if (wpa_s->p2p_in_invitation) {
6890 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6893 wpas_p2p_group_formation_failed(wpa_s);
6898 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6906 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6908 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6911 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6912 "being available anymore");
6913 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6917 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6918 int freq_24, int freq_5, int freq_overall)
6920 struct p2p_data *p2p = wpa_s->global->p2p;
6923 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6927 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6930 struct p2p_data *p2p = wpa_s->global->p2p;
6935 if (hwaddr_aton(addr, peer))
6938 return p2p_unauthorize(p2p, peer);
6943 * wpas_p2p_disconnect - Disconnect from a P2P Group
6944 * @wpa_s: Pointer to wpa_supplicant data
6945 * Returns: 0 on success, -1 on failure
6947 * This can be used to disconnect from a group in which the local end is a P2P
6948 * Client or to end a P2P Group in case the local end is the Group Owner. If a
6949 * virtual network interface was created for this group, that interface will be
6950 * removed. Otherwise, only the configured P2P group network will be removed
6951 * from the interface.
6953 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6959 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6964 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6968 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6971 ret = p2p_in_progress(wpa_s->global->p2p);
6974 * Check whether there is an ongoing WPS provisioning step (or
6975 * other parts of group formation) on another interface since
6976 * p2p_in_progress() does not report this to avoid issues for
6977 * scans during such provisioning step.
6979 if (wpa_s->global->p2p_group_formation &&
6980 wpa_s->global->p2p_group_formation != wpa_s) {
6981 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6982 "in group formation",
6983 wpa_s->global->p2p_group_formation->ifname);
6988 if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6989 struct os_reltime now;
6990 os_get_reltime(&now);
6991 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6992 P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6993 /* Wait for the first client has expired */
6994 wpa_s->global->p2p_go_wait_client.sec = 0;
6996 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7005 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7006 struct wpa_ssid *ssid)
7008 if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7009 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7010 wpa_s->parent, NULL) > 0) {
7012 * Remove the network by scheduling the group formation
7013 * timeout to happen immediately. The teardown code
7014 * needs to be scheduled to run asynch later so that we
7015 * don't delete data from under ourselves unexpectedly.
7016 * Calling wpas_p2p_group_formation_timeout directly
7017 * causes a series of crashes in WPS failure scenarios.
7019 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7020 "P2P group network getting removed");
7021 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7022 wpa_s->parent, NULL);
7027 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7028 const u8 *addr, const u8 *ssid,
7034 for (s = wpa_s->conf->ssid; s; s = s->next) {
7035 if (s->disabled != 2)
7038 (ssid_len != s->ssid_len ||
7039 os_memcmp(ssid, s->ssid, ssid_len) != 0))
7042 if (s->mode == WPAS_MODE_P2P_GO)
7046 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7047 return s; /* peer is GO in the persistent group */
7048 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7050 for (i = 0; i < s->num_p2p_clients; i++) {
7051 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
7052 addr, ETH_ALEN) == 0)
7053 return s; /* peer is P2P client in persistent
7062 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7065 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7066 wpa_s->parent, NULL) > 0) {
7068 * This can happen if WPS provisioning step is not terminated
7069 * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7070 * peer was able to connect, there is no need to time out group
7071 * formation after this, though. In addition, this is used with
7072 * the initial connection wait on the GO as a separate formation
7073 * timeout and as such, expected to be hit after the initial WPS
7074 * provisioning step.
7076 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7078 if (!wpa_s->p2p_go_group_formation_completed &&
7079 !wpa_s->group_formation_reported) {
7081 * GO has not yet notified group formation success since
7082 * the WPS step was not completed cleanly. Do that
7083 * notification now since the P2P Client was able to
7084 * connect and as such, must have received the
7085 * credential from the WPS step.
7087 if (wpa_s->global->p2p)
7088 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7089 wpas_group_formation_completed(wpa_s, 1);
7092 if (!wpa_s->p2p_go_group_formation_completed) {
7093 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7094 wpa_s->p2p_go_group_formation_completed = 1;
7095 wpa_s->global->p2p_group_formation = NULL;
7096 wpa_s->p2p_in_provisioning = 0;
7097 wpa_s->p2p_in_invitation = 0;
7099 wpa_s->global->p2p_go_wait_client.sec = 0;
7102 wpas_p2p_add_persistent_group_client(wpa_s, addr);
7106 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7109 struct wpa_supplicant *group = wpa_s;
7110 if (wpa_s->global->p2p_group_formation)
7111 group = wpa_s->global->p2p_group_formation;
7112 wpa_s = wpa_s->parent;
7113 offchannel_send_action_done(wpa_s);
7115 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7116 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7117 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7118 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7119 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7120 wpa_s->p2p_persistent_id,
7121 wpa_s->p2p_pd_before_go_neg,
7127 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7129 if (!wpa_s->p2p_fallback_to_go_neg ||
7130 wpa_s->p2p_in_provisioning <= 5)
7133 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7134 return 0; /* peer operating as a GO */
7136 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7137 "fallback to GO Negotiation");
7138 wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7144 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7146 struct wpa_supplicant *ifs;
7148 if (wpa_s->wpa_state > WPA_SCANNING) {
7149 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7150 "concurrent operation",
7151 wpa_s->conf->p2p_search_delay);
7152 return wpa_s->conf->p2p_search_delay;
7155 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7157 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7158 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7159 "delay due to concurrent operation on "
7161 wpa_s->conf->p2p_search_delay,
7163 return wpa_s->conf->p2p_search_delay;
7171 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7172 struct wpa_ssid *s, const u8 *addr,
7175 struct psk_list_entry *psk, *tmp;
7178 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7180 if ((iface_addr && !psk->p2p &&
7181 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7182 (!iface_addr && psk->p2p &&
7183 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7184 wpa_dbg(wpa_s, MSG_DEBUG,
7185 "P2P: Remove persistent group PSK list entry for "
7187 MAC2STR(psk->addr), psk->p2p);
7188 dl_list_del(&psk->list);
7198 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7199 const u8 *p2p_dev_addr,
7200 const u8 *psk, size_t psk_len)
7202 struct wpa_ssid *ssid = wpa_s->current_ssid;
7203 struct wpa_ssid *persistent;
7204 struct psk_list_entry *p, *last;
7206 if (psk_len != sizeof(p->psk))
7210 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7211 " p2p_dev_addr=" MACSTR,
7212 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7213 if (is_zero_ether_addr(p2p_dev_addr))
7214 p2p_dev_addr = NULL;
7216 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7220 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7221 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7222 /* To be added to persistent group once created */
7223 if (wpa_s->global->add_psk == NULL) {
7224 wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7225 if (wpa_s->global->add_psk == NULL)
7228 p = wpa_s->global->add_psk;
7231 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7234 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7236 os_memcpy(p->psk, psk, psk_len);
7240 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7241 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7245 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7248 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7252 p = os_zalloc(sizeof(*p));
7257 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7260 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7262 os_memcpy(p->psk, psk, psk_len);
7264 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7265 (last = dl_list_last(&persistent->psk_list,
7266 struct psk_list_entry, list))) {
7267 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7268 MACSTR " (p2p=%u) to make room for a new one",
7269 MAC2STR(last->addr), last->p2p);
7270 dl_list_del(&last->list);
7274 wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7275 p2p_dev_addr ? p2p_dev_addr : mac_addr,
7276 p2p_dev_addr == NULL);
7278 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7279 MACSTR, MAC2STR(p2p_dev_addr));
7281 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7284 dl_list_add(&persistent->psk_list, &p->list);
7286 if (wpa_s->parent->conf->update_config &&
7287 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7288 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7292 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7293 struct wpa_ssid *s, const u8 *addr,
7298 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7299 if (res > 0 && wpa_s->conf->update_config &&
7300 wpa_config_write(wpa_s->confname, wpa_s->conf))
7301 wpa_dbg(wpa_s, MSG_DEBUG,
7302 "P2P: Failed to update configuration");
7306 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7307 const u8 *peer, int iface_addr)
7309 struct hostapd_data *hapd;
7310 struct hostapd_wpa_psk *psk, *prev, *rem;
7311 struct sta_info *sta;
7313 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7314 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7317 /* Remove per-station PSK entry */
7318 hapd = wpa_s->ap_iface->bss[0];
7320 psk = hapd->conf->ssid.wpa_psk;
7322 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7324 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7325 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7326 MACSTR " iface_addr=%d",
7327 MAC2STR(peer), iface_addr);
7329 prev->next = psk->next;
7331 hapd->conf->ssid.wpa_psk = psk->next;
7341 /* Disconnect from group */
7343 sta = ap_get_sta(hapd, peer);
7345 sta = ap_get_sta_p2p(hapd, peer);
7347 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7348 " (iface_addr=%d) from group",
7349 MAC2STR(peer), iface_addr);
7350 hostapd_drv_sta_deauth(hapd, sta->addr,
7351 WLAN_REASON_DEAUTH_LEAVING);
7352 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7357 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7361 struct wpa_supplicant *w;
7363 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7365 /* Remove from any persistent group */
7366 for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
7367 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7370 wpas_remove_persistent_peer(wpa_s, s, peer, 0);
7371 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
7374 /* Remove from any operating group */
7375 for (w = wpa_s->global->ifaces; w; w = w->next)
7376 wpas_p2p_remove_client_go(w, peer, iface_addr);
7380 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7382 struct wpa_supplicant *wpa_s = eloop_ctx;
7383 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7387 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7389 struct wpa_supplicant *wpa_s = eloop_ctx;
7391 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7392 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7396 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7397 struct wpa_ssid *ssid)
7399 struct wpa_supplicant *iface;
7401 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7402 if (!iface->current_ssid ||
7403 iface->current_ssid->frequency == freq ||
7404 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7405 !iface->current_ssid->p2p_group))
7408 /* Remove the connection with least priority */
7409 if (!wpas_is_p2p_prioritized(iface)) {
7410 /* STA connection has priority over existing
7411 * P2P connection, so remove the interface. */
7412 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7413 eloop_register_timeout(0, 0,
7414 wpas_p2p_group_freq_conflict,
7416 /* If connection in progress is P2P connection, do not
7417 * proceed for the connection. */
7423 /* P2P connection has priority, disable the STA network
7425 wpa_supplicant_disable_network(wpa_s->global->ifaces,
7427 wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7428 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7429 os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7431 /* If P2P connection is in progress, continue
7444 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7446 struct wpa_ssid *ssid = wpa_s->current_ssid;
7448 if (ssid == NULL || !ssid->p2p_group)
7451 if (wpa_s->p2p_last_4way_hs_fail &&
7452 wpa_s->p2p_last_4way_hs_fail == ssid) {
7453 u8 go_dev_addr[ETH_ALEN];
7454 struct wpa_ssid *persistent;
7456 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7458 ssid->ssid_len) <= 0) {
7459 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7463 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7464 MACSTR, MAC2STR(go_dev_addr));
7465 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7468 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7469 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7472 wpa_msg_global(wpa_s->parent, MSG_INFO,
7473 P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7476 wpa_s->p2p_last_4way_hs_fail = NULL;
7478 * Remove the group from a timeout to avoid issues with caller
7479 * continuing to use the interface if this is on a P2P group
7482 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7487 wpa_s->p2p_last_4way_hs_fail = ssid;
7492 #ifdef CONFIG_WPS_NFC
7494 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7502 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7506 wsc_len = wsc ? wpabuf_len(wsc) : 0;
7507 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7514 wpabuf_put_be16(ret, wsc_len);
7516 wpabuf_put_buf(ret, wsc);
7517 wpabuf_put_be16(ret, wpabuf_len(p2p));
7518 wpabuf_put_buf(ret, p2p);
7522 wpa_hexdump_buf(MSG_DEBUG,
7523 "P2P: Generated NFC connection handover message", ret);
7527 tmp = ndef_build_p2p(ret);
7530 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7540 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7541 struct wpa_ssid **ssid, u8 *go_dev_addr)
7543 struct wpa_supplicant *iface;
7546 os_memset(go_dev_addr, 0, ETH_ALEN);
7549 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7550 if (iface->wpa_state < WPA_ASSOCIATING ||
7551 iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7552 !iface->current_ssid->p2p_group ||
7553 iface->current_ssid->mode != WPAS_MODE_INFRA)
7556 *ssid = iface->current_ssid;
7558 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7559 return iface->assoc_freq;
7565 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7568 struct wpabuf *wsc, *p2p;
7569 struct wpa_ssid *ssid;
7570 u8 go_dev_addr[ETH_ALEN];
7571 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7573 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7574 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7578 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7579 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7580 &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7581 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7585 if (cli_freq == 0) {
7586 wsc = wps_build_nfc_handover_req_p2p(
7587 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7590 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7591 go_dev_addr, ssid ? ssid->ssid : NULL,
7592 ssid ? ssid->ssid_len : 0);
7594 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7598 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7601 struct wpabuf *wsc, *p2p;
7602 struct wpa_ssid *ssid;
7603 u8 go_dev_addr[ETH_ALEN];
7604 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7606 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7609 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7610 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7611 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7614 if (cli_freq == 0) {
7615 wsc = wps_build_nfc_handover_sel_p2p(
7617 tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7618 DEV_PW_NFC_CONNECTION_HANDOVER,
7619 wpa_s->conf->wps_nfc_dh_pubkey,
7620 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7623 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7624 go_dev_addr, ssid ? ssid->ssid : NULL,
7625 ssid ? ssid->ssid_len : 0);
7627 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7631 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7632 struct p2p_nfc_params *params)
7634 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7635 "connection handover (freq=%d)",
7638 if (params->go_freq && params->go_ssid_len) {
7639 wpa_s->p2p_wps_method = WPS_NFC;
7640 wpa_s->pending_join_wps_method = WPS_NFC;
7641 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7642 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7644 return wpas_p2p_join_start(wpa_s, params->go_freq,
7646 params->go_ssid_len);
7649 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7650 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7651 params->go_freq, -1, 0, 1, 1);
7655 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7656 struct p2p_nfc_params *params, int tag)
7658 int res, persistent;
7659 struct wpa_ssid *ssid;
7661 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7662 "connection handover");
7663 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7664 ssid = wpa_s->current_ssid;
7667 if (ssid->mode != WPAS_MODE_P2P_GO)
7669 if (wpa_s->ap_iface == NULL)
7673 if (wpa_s == NULL) {
7674 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7678 if (wpa_s->parent->p2p_oob_dev_pw_id !=
7679 DEV_PW_NFC_CONNECTION_HANDOVER &&
7680 !wpa_s->parent->p2p_oob_dev_pw) {
7681 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7684 res = wpas_ap_wps_add_nfc_pw(
7685 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7686 wpa_s->parent->p2p_oob_dev_pw,
7687 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7688 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7693 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7697 if (!params->peer ||
7698 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7701 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7702 " to join", MAC2STR(params->peer->p2p_device_addr));
7704 wpa_s->global->p2p_invite_group = wpa_s;
7705 persistent = ssid->p2p_persistent_group &&
7706 wpas_p2p_get_persistent(wpa_s->parent,
7707 params->peer->p2p_device_addr,
7708 ssid->ssid, ssid->ssid_len);
7709 wpa_s->parent->pending_invite_ssid_id = -1;
7711 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7712 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7713 ssid->ssid, ssid->ssid_len, ssid->frequency,
7714 wpa_s->global->p2p_dev_addr, persistent, 0,
7715 wpa_s->parent->p2p_oob_dev_pw_id);
7719 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7720 struct p2p_nfc_params *params,
7723 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7724 "connection handover");
7725 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7726 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7727 forced_freq, -1, 0, 1, 1);
7731 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7732 struct p2p_nfc_params *params,
7737 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7738 "connection handover");
7739 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7740 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7741 forced_freq, -1, 0, 1, 1);
7745 res = wpas_p2p_listen(wpa_s, 60);
7747 p2p_unauthorize(wpa_s->global->p2p,
7748 params->peer->p2p_device_addr);
7755 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7756 const struct wpabuf *data,
7757 int sel, int tag, int forced_freq)
7759 const u8 *pos, *end;
7761 struct p2p_nfc_params params;
7764 os_memset(¶ms, 0, sizeof(params));
7767 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7769 pos = wpabuf_head(data);
7770 end = pos + wpabuf_len(data);
7772 if (end - pos < 2) {
7773 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7777 len = WPA_GET_BE16(pos);
7779 if (len > end - pos) {
7780 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7784 params.wsc_attr = pos;
7785 params.wsc_len = len;
7788 if (end - pos < 2) {
7789 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7793 len = WPA_GET_BE16(pos);
7795 if (len > end - pos) {
7796 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7800 params.p2p_attr = pos;
7801 params.p2p_len = len;
7804 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7805 params.wsc_attr, params.wsc_len);
7806 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7807 params.p2p_attr, params.p2p_len);
7809 wpa_hexdump(MSG_DEBUG,
7810 "P2P: Ignored extra data after P2P attributes",
7814 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms);
7818 if (params.next_step == NO_ACTION)
7821 if (params.next_step == BOTH_GO) {
7822 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7823 MAC2STR(params.peer->p2p_device_addr));
7827 if (params.next_step == PEER_CLIENT) {
7828 if (!is_zero_ether_addr(params.go_dev_addr)) {
7829 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7830 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7832 MAC2STR(params.peer->p2p_device_addr),
7834 MAC2STR(params.go_dev_addr),
7835 wpa_ssid_txt(params.go_ssid,
7836 params.go_ssid_len));
7838 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7839 "peer=" MACSTR " freq=%d",
7840 MAC2STR(params.peer->p2p_device_addr),
7846 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7847 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7848 MACSTR, MAC2STR(params.peer->p2p_device_addr));
7852 wpabuf_free(wpa_s->p2p_oob_dev_pw);
7853 wpa_s->p2p_oob_dev_pw = NULL;
7855 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7856 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7861 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7862 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7863 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7864 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7865 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7866 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7867 wpa_s->p2p_peer_oob_pk_hash_known = 1;
7871 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7872 "peer OOB Device Password Id %u", id);
7875 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7876 "Device Password Id %u", id);
7877 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7878 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7879 params.oob_dev_pw_len -
7880 WPS_OOB_PUBKEY_HASH_LEN - 2);
7881 wpa_s->p2p_oob_dev_pw_id = id;
7882 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7883 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7884 params.oob_dev_pw_len -
7885 WPS_OOB_PUBKEY_HASH_LEN - 2);
7886 if (wpa_s->p2p_oob_dev_pw == NULL)
7889 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7890 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7891 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7894 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7895 "without Device Password");
7896 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7899 switch (params.next_step) {
7903 /* already covered above */
7906 return wpas_p2p_nfc_join_group(wpa_s, ¶ms);
7908 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag);
7910 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq);
7912 /* TODO: use own OOB Dev Pw */
7913 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq);
7920 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7921 const struct wpabuf *data, int forced_freq)
7923 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7926 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7930 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7931 const struct wpabuf *req,
7932 const struct wpabuf *sel, int forced_freq)
7937 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7940 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7942 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7943 wpabuf_head(req), wpabuf_len(req));
7944 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7945 wpabuf_head(sel), wpabuf_len(sel));
7947 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7948 tmp = ndef_parse_p2p(init ? sel : req);
7950 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7954 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7962 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7965 int go_intent = wpa_s->conf->p2p_go_intent;
7966 struct wpa_supplicant *iface;
7968 if (wpa_s->global->p2p == NULL)
7972 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7973 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7975 if (!iface->ap_iface)
7977 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7979 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7981 if (wpa_s->p2p_nfc_tag_enabled)
7982 wpas_p2p_remove_pending_group_interface(wpa_s);
7983 wpa_s->p2p_nfc_tag_enabled = 0;
7987 if (wpa_s->global->p2p_disabled)
7990 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7991 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7992 wpa_s->conf->wps_nfc_dev_pw == NULL ||
7993 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7994 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7995 "to allow static handover cases");
7999 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8001 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8002 wpabuf_free(wpa_s->p2p_oob_dev_pw);
8003 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8004 if (wpa_s->p2p_oob_dev_pw == NULL)
8006 wpa_s->p2p_peer_oob_pk_hash_known = 0;
8008 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8009 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8011 * P2P Group Interface present and the command came on group
8012 * interface, so enable the token for the current interface.
8014 wpa_s->create_p2p_iface = 0;
8016 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8019 if (wpa_s->create_p2p_iface) {
8020 enum wpa_driver_if_type iftype;
8021 /* Prepare to add a new interface for the group */
8022 iftype = WPA_IF_P2P_GROUP;
8023 if (go_intent == 15)
8024 iftype = WPA_IF_P2P_GO;
8025 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8026 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8027 "interface for the group");
8031 if_addr = wpa_s->pending_interface_addr;
8033 if_addr = wpa_s->own_addr;
8035 wpa_s->p2p_nfc_tag_enabled = enabled;
8037 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8038 struct hostapd_data *hapd;
8039 if (iface->ap_iface == NULL)
8041 hapd = iface->ap_iface->bss[0];
8042 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8043 hapd->conf->wps_nfc_dh_pubkey =
8044 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8045 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8046 hapd->conf->wps_nfc_dh_privkey =
8047 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8048 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8049 hapd->conf->wps_nfc_dev_pw =
8050 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8051 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8053 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8054 wpa_dbg(iface, MSG_DEBUG,
8055 "P2P: Failed to enable NFC Tag for GO");
8058 p2p_set_authorized_oob_dev_pw_id(
8059 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8065 #endif /* CONFIG_WPS_NFC */
8068 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8069 struct wpa_used_freq_data *freqs,
8072 u8 curr_chan, cand, chan;
8075 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8076 for (i = 0, cand = 0; i < num; i++) {
8077 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8078 if (curr_chan == chan) {
8083 if (chan == 1 || chan == 6 || chan == 11)
8088 wpa_dbg(wpa_s, MSG_DEBUG,
8089 "P2P: Update Listen channel to %u baased on operating channel",
8091 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8096 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8098 struct wpa_used_freq_data *freqs;
8099 unsigned int num = wpa_s->num_multichan_concurrent;
8101 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8105 * If possible, optimize the Listen channel to be a channel that is
8106 * already used by one of the other interfaces.
8108 if (!wpa_s->conf->p2p_optimize_listen_chan)
8111 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8114 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8118 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8120 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
8125 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8127 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8128 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8129 "the management interface is being removed");
8130 wpas_p2p_deinit_global(wpa_s->global);
8135 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8137 if (wpa_s->ap_iface->bss)
8138 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8139 wpas_p2p_group_deinit(wpa_s);