text: /*
   * wpa_supplicant - P2P
   * Copyright (c) 2009-2010, Atheros Communications
   *
   * This software may be distributed under the terms of the BSD license.
   * See README for more details.
   */
  
  #include "includes.h"
  
  #include "common.h"
  #include "eloop.h"
  #include "common/ieee802_11_common.h"
  #include "common/ieee802_11_defs.h"
  #include "common/wpa_ctrl.h"
  #include "wps/wps_i.h"
  #include "p2p/p2p.h"
  #include "ap/hostapd.h"
  #include "ap/ap_config.h"
  #include "ap/sta_info.h"
  #include "ap/ap_drv_ops.h"
  #include "ap/p2p_hostapd.h"
  #include "eapol_supp/eapol_supp_sm.h"
  #include "rsn_supp/wpa.h"
  #include "wpa_supplicant_i.h"
  #include "driver_i.h"
  #include "ap.h"
  #include "config_ssid.h"
  #include "config.h"
  #include "notify.h"
  #include "scan.h"
  #include "bss.h"
  #include "offchannel.h"
  #include "wps_supplicant.h"
  #include "p2p_supplicant.h"
  
  
  /*
   * How many times to try to scan to find the GO before giving up on join
   * request.
   */
  #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  
  #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  
  #ifndef P2P_MAX_CLIENT_IDLE
  /*
   * How many seconds to try to reconnect to the GO when connection in P2P client
   * role has been lost.
   */
  #ifdef ANDROID_P2P
  #define P2P_MAX_CLIENT_IDLE 20
  #else
  #define P2P_MAX_CLIENT_IDLE 10
  #endif /* ANDROID_P2P */
  #endif /* P2P_MAX_CLIENT_IDLE */
  
  #ifndef P2P_MAX_INITIAL_CONN_WAIT
  /*
   * How many seconds to wait for initial 4-way handshake to get completed after
   * WPS provisioning step.
   */
  #define P2P_MAX_INITIAL_CONN_WAIT 20
  #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  
  #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  /*
   * How many seconds to wait for initial 4-way handshake to get completed after
   * WPS provisioning step on the GO. This controls the extra time the P2P
   * operation is considered to be in progress (e.g., to delay other scans) after
   * WPS provisioning has been completed on the GO during group formation.
   */
  #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  
  #ifndef P2P_CONCURRENT_SEARCH_DELAY
  #define P2P_CONCURRENT_SEARCH_DELAY 500
  #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  
  #define P2P_MGMT_DEVICE_PREFIX		"p2p-dev-"
  
  enum p2p_group_removal_reason {
  	P2P_GROUP_REMOVAL_UNKNOWN,
  	P2P_GROUP_REMOVAL_SILENT,
  	P2P_GROUP_REMOVAL_FORMATION_FAILED,
  	P2P_GROUP_REMOVAL_REQUESTED,
  	P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  	P2P_GROUP_REMOVAL_UNAVAILABLE,
  	P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  	P2P_GROUP_REMOVAL_PSK_FAILURE,
  #ifdef ANDROID_P2P
  	P2P_GROUP_REMOVAL_FREQ_CONFLICT
  #endif
  };
  
  
  static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  static struct wpa_supplicant *
  wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  			 int go);
  static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq);
  static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  			 const u8 *dev_addr, enum p2p_wps_method wps_method,
  			 int auto_join);
  static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
  static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
  static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
  static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
  static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
  					     void *timeout_ctx);
  #ifdef ANDROID_P2P
  static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
  #endif
  static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
  					int group_added);
  static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
  
  
  /*
   * Get the number of concurrent channels that the HW can operate, but that are
   * currently not in use by any of the wpa_supplicant interfaces.
   */
  static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
  {
  	int *freqs;
  	int num;
  
  	freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
  	if (!freqs)
  		return -1;
  
  	num = get_shared_radio_freqs(wpa_s, freqs,
  				     wpa_s->num_multichan_concurrent);
  	os_free(freqs);
  
  	return wpa_s->num_multichan_concurrent - num;
  }
  
  
  /*
   * Get the frequencies that are currently in use by one or more of the virtual
   * interfaces, and that are also valid for P2P operation.
   */
  static int wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
  				     int *p2p_freqs, unsigned int len)
  {
  	int *freqs;
  	unsigned int num, i, j;
  
  	freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
  	if (!freqs)
  		return -1;
  
  	num = get_shared_radio_freqs(wpa_s, freqs,
  				     wpa_s->num_multichan_concurrent);
  
  	os_memset(p2p_freqs, 0, sizeof(int) * len);
  
  	for (i = 0, j = 0; i < num && j < len; i++) {
  		if (p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
  			p2p_freqs[j++] = freqs[i];
  	}
  
  	os_free(freqs);
  
  	return j;
  }
  
  
  static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
  					     int freq)
  {
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return;
  	if (freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
  	    wpas_p2p_num_unused_channels(wpa_s) > 0 &&
  	    wpa_s->parent->conf->p2p_ignore_shared_freq)
  		freq = 0;
  	p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
  }
  
  
  static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
  				      struct wpa_scan_results *scan_res)
  {
  	size_t i;
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return;
  
  	wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
  		   (int) scan_res->num);
  
  	for (i = 0; i < scan_res->num; i++) {
  		struct wpa_scan_res *bss = scan_res->res[i];
  		struct os_time time_tmp_age, entry_ts;
  		time_tmp_age.sec = bss->age / 1000;
  		time_tmp_age.usec = (bss->age % 1000) * 1000;
  		os_time_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
  		if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
  					 bss->freq, &entry_ts, bss->level,
  					 (const u8 *) (bss + 1),
  					 bss->ie_len) > 0)
  			break;
  	}
  
  	p2p_scan_res_handled(wpa_s->global->p2p);
  }
  
  
  static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
  			 unsigned int num_req_dev_types,
  			 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	struct wpa_supplicant *ifs;
  	struct wpa_driver_scan_params params;
  	int ret;
  	struct wpabuf *wps_ie, *ies;
  	int social_channels[] = { 2412, 2437, 2462, 0, 0 };
  	size_t ielen;
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return -1;
  
  	for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
  		if (ifs->sta_scan_pending &&
  		    (wpas_scan_scheduled(ifs) || ifs->scanning) &&
  		    wpas_p2p_in_progress(wpa_s) == 2) {
  			wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow "
  				   "pending station mode scan to be "
  				   "completed on interface %s", ifs->ifname);
  			wpa_s->global->p2p_cb_on_scan_complete = 1;
  			wpa_supplicant_req_scan(ifs, 0, 0);
  			return 1;
  		}
  	}
  
  	os_memset(&params, 0, sizeof(params));
  
  	/* P2P Wildcard SSID */
  	params.num_ssids = 1;
  	params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
  	params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
  
  	wpa_s->wps->dev.p2p = 1;
  	wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
  					wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
  					num_req_dev_types, req_dev_types);
  	if (wps_ie == NULL)
  		return -1;
  
  	ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
  	ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
  	if (ies == NULL) {
  		wpabuf_free(wps_ie);
  		return -1;
  	}
  	wpabuf_put_buf(ies, wps_ie);
  	wpabuf_free(wps_ie);
  
  	p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
  
  	params.p2p_probe = 1;
  	params.extra_ies = wpabuf_head(ies);
  	params.extra_ies_len = wpabuf_len(ies);
  
  	switch (type) {
  	case P2P_SCAN_SOCIAL:
  		params.freqs = social_channels;
  		break;
  	case P2P_SCAN_FULL:
  		break;
  	case P2P_SCAN_SOCIAL_PLUS_ONE:
  		social_channels[3] = freq;
  		params.freqs = social_channels;
  		break;
  	}
  
  	ret = wpa_drv_scan(wpa_s, &params);
  
  	wpabuf_free(ies);
  
  	if (ret) {
  		for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
  			if (ifs->scanning ||
  			    ifs->scan_res_handler == wpas_p2p_scan_res_handler) {
  				wpa_s->global->p2p_cb_on_scan_complete = 1;
  				ret = 1;
  				break;
  			}
  		}
  	} else {
  		os_get_time(&wpa_s->scan_trigger_time);
  		wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
  	}
  
  	return ret;
  }
  
  
  static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
  {
  	switch (p2p_group_interface) {
  	case P2P_GROUP_INTERFACE_PENDING:
  		return WPA_IF_P2P_GROUP;
  	case P2P_GROUP_INTERFACE_GO:
  		return WPA_IF_P2P_GO;
  	case P2P_GROUP_INTERFACE_CLIENT:
  		return WPA_IF_P2P_CLIENT;
  	}
  
  	return WPA_IF_P2P_GROUP;
  }
  
  
  static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
  						  const u8 *ssid,
  						  size_t ssid_len, int *go)
  {
  	struct wpa_ssid *s;
  
  	for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
  		for (s = wpa_s->conf->ssid; s; s = s->next) {
  			if (s->disabled != 0 || !s->p2p_group ||
  			    s->ssid_len != ssid_len ||
  			    os_memcmp(ssid, s->ssid, ssid_len) != 0)
  				continue;
  			if (s->mode == WPAS_MODE_P2P_GO &&
  			    s != wpa_s->current_ssid)
  				continue;
  			if (go)
  				*go = s->mode == WPAS_MODE_P2P_GO;
  			return wpa_s;
  		}
  	}
  
  	return NULL;
  }
  
  
  static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
  				 enum p2p_group_removal_reason removal_reason)
  {
  	struct wpa_ssid *ssid;
  	char *gtype;
  	const char *reason;
  
  	ssid = wpa_s->current_ssid;
  	if (ssid == NULL) {
  		/*
  		 * The current SSID was not known, but there may still be a
  		 * pending P2P group interface waiting for provisioning or a
  		 * P2P group that is trying to reconnect.
  		 */
  		ssid = wpa_s->conf->ssid;
  		while (ssid) {
  			if (ssid->p2p_group && ssid->disabled != 2)
  				break;
  			ssid = ssid->next;
  		}
  		if (ssid == NULL &&
  			wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
  		{
  			wpa_printf(MSG_ERROR, "P2P: P2P group interface "
  				   "not found");
  			return -1;
  		}
  	}
  	if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
  		gtype = "GO";
  	else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
  		 (ssid && ssid->mode == WPAS_MODE_INFRA)) {
  		wpa_s->reassociate = 0;
  		wpa_s->disconnected = 1;
  		wpa_supplicant_deauthenticate(wpa_s,
  					      WLAN_REASON_DEAUTH_LEAVING);
  		gtype = "client";
  	} else
  		gtype = "GO";
  	if (wpa_s->cross_connect_in_use) {
  		wpa_s->cross_connect_in_use = 0;
  		wpa_msg_global(wpa_s->parent, MSG_INFO,
  			       P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
  			       wpa_s->ifname, wpa_s->cross_connect_uplink);
  	}
  	switch (removal_reason) {
  	case P2P_GROUP_REMOVAL_REQUESTED:
  		reason = " reason=REQUESTED";
  		break;
  	case P2P_GROUP_REMOVAL_FORMATION_FAILED:
  		reason = " reason=FORMATION_FAILED";
  		break;
  	case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
  		reason = " reason=IDLE";
  		break;
  	case P2P_GROUP_REMOVAL_UNAVAILABLE:
  		reason = " reason=UNAVAILABLE";
  		break;
  	case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
  		reason = " reason=GO_ENDING_SESSION";
  		break;
  	case P2P_GROUP_REMOVAL_PSK_FAILURE:
  		reason = " reason=PSK_FAILURE";
  		break;
  #ifdef ANDROID_P2P
  	case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
  		reason = " reason=FREQ_CONFLICT";
  		break;
  #endif
  	default:
  		reason = "";
  		break;
  	}
  	if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
  		wpa_msg_global(wpa_s->parent, MSG_INFO,
  			       P2P_EVENT_GROUP_REMOVED "%s %s%s",
  			       wpa_s->ifname, gtype, reason);
  	}
  
  #ifdef ANDROID_P2P
  	eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
  #endif
  	if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
  		wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
  	if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
  				 wpa_s->parent, NULL) > 0) {
  		wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
  			   "timeout");
  		wpa_s->p2p_in_provisioning = 0;
  	}
  
  	if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
  		wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
  
  	if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
  		struct wpa_global *global;
  		char *ifname;
  		enum wpa_driver_if_type type;
  		wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
  			wpa_s->ifname);
  		global = wpa_s->global;
  		ifname = os_strdup(wpa_s->ifname);
  		type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
  		wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
  		wpa_s = global->ifaces;
  		if (wpa_s && ifname)
  			wpa_drv_if_remove(wpa_s, type, ifname);
  		os_free(ifname);
  		return 1;
  	}
  
  	wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
  	if (ssid && (ssid->p2p_group ||
  		     ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
  		     (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
  		int id = ssid->id;
  		if (ssid == wpa_s->current_ssid) {
  			wpa_sm_set_config(wpa_s->wpa, NULL);
  			eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
  			wpa_s->current_ssid = NULL;
  		}
  		/*
  		 * Networks objects created during any P2P activities are not
  		 * exposed out as they might/will confuse certain non-P2P aware
  		 * applications since these network objects won't behave like
  		 * regular ones.
  		 *
  		 * Likewise, we don't send out network removed signals for such
  		 * network objects.
  		 */
  		wpa_config_remove_network(wpa_s->conf, id);
  		wpa_supplicant_clear_status(wpa_s);
  		wpa_supplicant_cancel_sched_scan(wpa_s);
  		wpa_s->sta_scan_pending = 0;
  	} else {
  		wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
  			   "found");
  	}
  	if (wpa_s->ap_iface)
  		wpa_supplicant_ap_deinit(wpa_s);
  	else
  		wpa_drv_deinit_p2p_cli(wpa_s);
  
  	return 0;
  }
  
  
  static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
  				     u8 *go_dev_addr,
  				     const u8 *ssid, size_t ssid_len)
  {
  	struct wpa_bss *bss;
  	const u8 *bssid;
  	struct wpabuf *p2p;
  	u8 group_capab;
  	const u8 *addr;
  
  	if (wpa_s->go_params)
  		bssid = wpa_s->go_params->peer_interface_addr;
  	else
  		bssid = wpa_s->bssid;
  
  	bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
  	if (bss == NULL) {
  		u8 iface_addr[ETH_ALEN];
  		if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
  					   iface_addr) == 0)
  			bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
  	}
  	if (bss == NULL) {
  		wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
  			   "group is persistent - BSS " MACSTR " not found",
  			   MAC2STR(bssid));
  		return 0;
  	}
  
  	p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
  	if (p2p == NULL) {
  		wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
  			   "group is persistent - BSS " MACSTR
  			   " did not include P2P IE", MAC2STR(bssid));
  		wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
  			    (u8 *) (bss + 1), bss->ie_len);
  		wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
  			    ((u8 *) bss + 1) + bss->ie_len,
  			    bss->beacon_ie_len);
  		return 0;
  	}
  
  	group_capab = p2p_get_group_capab(p2p);
  	addr = p2p_get_go_dev_addr(p2p);
  	wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
  		   "group_capab=0x%x", group_capab);
  	if (addr) {
  		os_memcpy(go_dev_addr, addr, ETH_ALEN);
  		wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
  			   MAC2STR(addr));
  	} else
  		os_memset(go_dev_addr, 0, ETH_ALEN);
  	wpabuf_free(p2p);
  
  	wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
  		   "go_dev_addr=" MACSTR,
  		   MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
  
  	return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
  }
  
  
  static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
  					   struct wpa_ssid *ssid,
  					   const u8 *go_dev_addr)
  {
  	struct wpa_ssid *s;
  	int changed = 0;
  
  	wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
  		   "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
  	for (s = wpa_s->conf->ssid; s; s = s->next) {
  		if (s->disabled == 2 &&
  		    os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
  		    s->ssid_len == ssid->ssid_len &&
  		    os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
  			break;
  	}
  
  	if (s) {
  		wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
  			   "entry");
  		if (ssid->passphrase && !s->passphrase)
  			changed = 1;
  		else if (ssid->passphrase && s->passphrase &&
  			 os_strcmp(ssid->passphrase, s->passphrase) != 0)
  			changed = 1;
  	} else {
  		wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
  			   "entry");
  		changed = 1;
  		s = wpa_config_add_network(wpa_s->conf);
  		if (s == NULL)
  			return -1;
  
  		/*
  		 * Instead of network_added we emit persistent_group_added
  		 * notification. Also to keep the defense checks in
  		 * persistent_group obj registration method, we set the
  		 * relevant flags in s to designate it as a persistent group.
  		 */
  		s->p2p_group = 1;
  		s->p2p_persistent_group = 1;
  		wpas_notify_persistent_group_added(wpa_s, s);
  		wpa_config_set_network_defaults(s);
  	}
  
  	s->p2p_group = 1;
  	s->p2p_persistent_group = 1;
  	s->disabled = 2;
  	s->bssid_set = 1;
  	os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
  	s->mode = ssid->mode;
  	s->auth_alg = WPA_AUTH_ALG_OPEN;
  	s->key_mgmt = WPA_KEY_MGMT_PSK;
  	s->proto = WPA_PROTO_RSN;
  	s->pairwise_cipher = WPA_CIPHER_CCMP;
  	s->export_keys = 1;
  	if (ssid->passphrase) {
  		os_free(s->passphrase);
  		s->passphrase = os_strdup(ssid->passphrase);
  	}
  	if (ssid->psk_set) {
  		s->psk_set = 1;
  		os_memcpy(s->psk, ssid->psk, 32);
  	}
  	if (s->passphrase && !s->psk_set)
  		wpa_config_update_psk(s);
  	if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
  		os_free(s->ssid);
  		s->ssid = os_malloc(ssid->ssid_len);
  	}
  	if (s->ssid) {
  		s->ssid_len = ssid->ssid_len;
  		os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
  	}
  	if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
  		dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
  		wpa_s->global->add_psk = NULL;
  		changed = 1;
  	}
  
  #ifndef CONFIG_NO_CONFIG_WRITE
  	if (changed && wpa_s->conf->update_config &&
  	    wpa_config_write(wpa_s->confname, wpa_s->conf)) {
  		wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
  	}
  #endif /* CONFIG_NO_CONFIG_WRITE */
  
  	return s->id;
  }
  
  
  static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
  						 const u8 *addr)
  {
  	struct wpa_ssid *ssid, *s;
  	u8 *n;
  	size_t i;
  	int found = 0;
  
  	ssid = wpa_s->current_ssid;
  	if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
  	    !ssid->p2p_persistent_group)
  		return;
  
  	for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
  		if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
  			continue;
  
  		if (s->ssid_len == ssid->ssid_len &&
  		    os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
  			break;
  	}
  
  	if (s == NULL)
  		return;
  
  	for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
  		if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
  			      ETH_ALEN) != 0)
  			continue;
  
  		if (i == s->num_p2p_clients - 1)
  			return; /* already the most recent entry */
  
  		/* move the entry to mark it most recent */
  		os_memmove(s->p2p_client_list + i * ETH_ALEN,
  			   s->p2p_client_list + (i + 1) * ETH_ALEN,
  			   (s->num_p2p_clients - i - 1) * ETH_ALEN);
  		os_memcpy(s->p2p_client_list +
  			  (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
  		found = 1;
  		break;
  	}
  
  	if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
  		n = os_realloc_array(s->p2p_client_list,
  				     s->num_p2p_clients + 1, ETH_ALEN);
  		if (n == NULL)
  			return;
  		os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
  		s->p2p_client_list = n;
  		s->num_p2p_clients++;
  	} else if (!found) {
  		/* Not enough room for an additional entry - drop the oldest
  		 * entry */
  		os_memmove(s->p2p_client_list,
  			   s->p2p_client_list + ETH_ALEN,
  			   (s->num_p2p_clients - 1) * ETH_ALEN);
  		os_memcpy(s->p2p_client_list +
  			  (s->num_p2p_clients - 1) * ETH_ALEN,
  			  addr, ETH_ALEN);
  	}
  
  #ifndef CONFIG_NO_CONFIG_WRITE
  	if (wpa_s->parent->conf->update_config &&
  	    wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
  		wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
  #endif /* CONFIG_NO_CONFIG_WRITE */
  }
  
  
  static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
  					   int success)
  {
  	struct wpa_ssid *ssid;
  	const char *ssid_txt;
  	int client;
  	int persistent;
  	u8 go_dev_addr[ETH_ALEN];
  	int network_id = -1;
  
  	/*
  	 * This callback is likely called for the main interface. Update wpa_s
  	 * to use the group interface if a new interface was created for the
  	 * group.
  	 */
  	if (wpa_s->global->p2p_group_formation)
  		wpa_s = wpa_s->global->p2p_group_formation;
  	wpa_s->global->p2p_group_formation = NULL;
  	wpa_s->p2p_in_provisioning = 0;
  
  	if (!success) {
  		wpa_msg_global(wpa_s->parent, MSG_INFO,
  			       P2P_EVENT_GROUP_FORMATION_FAILURE);
  		wpas_p2p_group_delete(wpa_s,
  				      P2P_GROUP_REMOVAL_FORMATION_FAILED);
  		return;
  	}
  
  	wpa_msg_global(wpa_s->parent, MSG_INFO,
  		       P2P_EVENT_GROUP_FORMATION_SUCCESS);
  
  	ssid = wpa_s->current_ssid;
  	if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
  		ssid->mode = WPAS_MODE_P2P_GO;
  		p2p_group_notif_formation_done(wpa_s->p2p_group);
  		wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
  	}
  
  	persistent = 0;
  	if (ssid) {
  		ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
  		client = ssid->mode == WPAS_MODE_INFRA;
  		if (ssid->mode == WPAS_MODE_P2P_GO) {
  			persistent = ssid->p2p_persistent_group;
  			os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
  				  ETH_ALEN);
  		} else
  			persistent = wpas_p2p_persistent_group(wpa_s,
  							       go_dev_addr,
  							       ssid->ssid,
  							       ssid->ssid_len);
  	} else {
  		ssid_txt = "";
  		client = wpa_s->p2p_group_interface ==
  			P2P_GROUP_INTERFACE_CLIENT;
  		os_memset(go_dev_addr, 0, ETH_ALEN);
  	}
  
  	wpa_s->show_group_started = 0;
  	if (client) {
  		/*
  		 * Indicate event only after successfully completed 4-way
  		 * handshake, i.e., when the interface is ready for data
  		 * packets.
  		 */
  		wpa_s->show_group_started = 1;
  #ifdef ANDROID_P2P
  		/* For client Second phase of Group formation (4-way handshake) can be still pending
  		 * So we need to restore wpa_s->global->p2p_group_formation */
  		wpa_printf(MSG_INFO, "Restoring back wpa_s->global->p2p_group_formation to wpa_s %p\n", wpa_s);
  		wpa_s->global->p2p_group_formation = wpa_s;
  #endif
  
  	} else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
  		char psk[65];
  		wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
  		wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
  			       "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr="
  			       MACSTR "%s",
  			       wpa_s->ifname, ssid_txt, ssid->frequency, psk,
  			       MAC2STR(go_dev_addr),
  			       persistent ? " [PERSISTENT]" : "");
  		wpas_p2p_cross_connect_setup(wpa_s);
  		wpas_p2p_set_group_idle_timeout(wpa_s);
  	} else {
  		wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
  			       "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
  			       "go_dev_addr=" MACSTR "%s",
  			       wpa_s->ifname, ssid_txt,
  			       ssid ? ssid->frequency : 0,
  			       ssid && ssid->passphrase ? ssid->passphrase : "",
  			       MAC2STR(go_dev_addr),
  			       persistent ? " [PERSISTENT]" : "");
  		wpas_p2p_cross_connect_setup(wpa_s);
  		wpas_p2p_set_group_idle_timeout(wpa_s);
  	}
  
  	if (persistent)
  		network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
  							     ssid, go_dev_addr);
  	else {
  		os_free(wpa_s->global->add_psk);
  		wpa_s->global->add_psk = NULL;
  	}
  	if (network_id < 0 && ssid)
  		network_id = ssid->id;
  	if (!client) {
  		wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
  		os_get_time(&wpa_s->global->p2p_go_wait_client);
  	}
  }
  
  
  static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
  					   unsigned int freq,
  					   const u8 *dst, const u8 *src,
  					   const u8 *bssid,
  					   const u8 *data, size_t data_len,
  					   enum offchannel_send_action_result
  					   result)
  {
  	enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
  
  	if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
  		return;
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return;
  
  	switch (result) {
  	case OFFCHANNEL_SEND_ACTION_SUCCESS:
  		res = P2P_SEND_ACTION_SUCCESS;
  		break;
  	case OFFCHANNEL_SEND_ACTION_NO_ACK:
  		res = P2P_SEND_ACTION_NO_ACK;
  		break;
  	case OFFCHANNEL_SEND_ACTION_FAILED:
  		res = P2P_SEND_ACTION_FAILED;
  		break;
  	}
  
  	p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
  
  	if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
  	    wpa_s->pending_pd_before_join &&
  	    (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
  	     os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
  	    wpa_s->p2p_fallback_to_go_neg) {
  		wpa_s->pending_pd_before_join = 0;
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
  			"during p2p_connect-auto");
  		wpas_p2p_fallback_to_go_neg(wpa_s, 0);
  		return;
  	}
  }
  
  
  static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
  			    const u8 *src, const u8 *bssid, const u8 *buf,
  			    size_t len, unsigned int wait_time)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
  				      wait_time,
  				      wpas_p2p_send_action_tx_status, 1);
  }
  
  
  static void wpas_send_action_done(void *ctx)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	offchannel_send_action_done(wpa_s);
  }
  
  
  static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
  				    struct p2p_go_neg_results *params)
  {
  	if (wpa_s->go_params == NULL) {
  		wpa_s->go_params = os_malloc(sizeof(*params));
  		if (wpa_s->go_params == NULL)
  			return -1;
  	}
  	os_memcpy(wpa_s->go_params, params, sizeof(*params));
  	return 0;
  }
  
  
  static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
  				    struct p2p_go_neg_results *res)
  {
  	wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
  		   MAC2STR(res->peer_interface_addr));
  	wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
  			  res->ssid, res->ssid_len);
  	wpa_supplicant_ap_deinit(wpa_s);
  	wpas_copy_go_neg_results(wpa_s, res);
  	if (res->wps_method == WPS_PBC)
  		wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
  	else {
  		u16 dev_pw_id = DEV_PW_DEFAULT;
  		if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
  			dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
  		wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
  				   wpa_s->p2p_pin, 1, dev_pw_id);
  	}
  }
  
  
  static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
  				  struct wpa_ssid *ssid)
  {
  	struct wpa_ssid *persistent;
  	struct psk_list_entry *psk;
  	struct hostapd_data *hapd;
  
  	if (!wpa_s->ap_iface)
  		return;
  
  	persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
  					     ssid->ssid_len);
  	if (persistent == NULL)
  		return;
  
  	hapd = wpa_s->ap_iface->bss[0];
  
  	dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
  			 list) {
  		struct hostapd_wpa_psk *hpsk;
  
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
  			MACSTR " psk=%d",
  			MAC2STR(psk->addr), psk->p2p);
  		hpsk = os_zalloc(sizeof(*hpsk));
  		if (hpsk == NULL)
  			break;
  		os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
  		if (psk->p2p)
  			os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
  		else
  			os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
  		hpsk->next = hapd->conf->ssid.wpa_psk;
  		hapd->conf->ssid.wpa_psk = hpsk;
  	}
  }
  
  
  static void p2p_go_configured(void *ctx, void *data)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	struct p2p_go_neg_results *params = data;
  	struct wpa_ssid *ssid;
  	int network_id = -1;
  
  	ssid = wpa_s->current_ssid;
  	if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
  		wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
  		if (wpa_s->global->p2p_group_formation == wpa_s)
  			wpa_s->global->p2p_group_formation = NULL;
  		if (os_strlen(params->passphrase) > 0) {
  			wpa_msg_global(wpa_s->parent, MSG_INFO,
  				       P2P_EVENT_GROUP_STARTED
  				       "%s GO ssid=\"%s\" freq=%d "
  				       "passphrase=\"%s\" go_dev_addr=" MACSTR
  				       "%s", wpa_s->ifname,
  				       wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
  				       ssid->frequency, params->passphrase,
  				       MAC2STR(wpa_s->global->p2p_dev_addr),
  				       params->persistent_group ?
  				       " [PERSISTENT]" : "");
  		} else {
  			char psk[65];
  			wpa_snprintf_hex(psk, sizeof(psk), params->psk,
  					 sizeof(params->psk));
  			wpa_msg_global(wpa_s->parent, MSG_INFO,
  				       P2P_EVENT_GROUP_STARTED
  				       "%s GO ssid=\"%s\" freq=%d psk=%s "
  				       "go_dev_addr=" MACSTR "%s",
  				       wpa_s->ifname,
  				       wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
  				       ssid->frequency, psk,
  				       MAC2STR(wpa_s->global->p2p_dev_addr),
  				       params->persistent_group ?
  				       " [PERSISTENT]" : "");
  		}
  
  		if (params->persistent_group) {
  			network_id = wpas_p2p_store_persistent_group(
  				wpa_s->parent, ssid,
  				wpa_s->global->p2p_dev_addr);
  			wpas_p2p_add_psk_list(wpa_s, ssid);
  		}
  		if (network_id < 0)
  			network_id = ssid->id;
  		wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
  		wpas_p2p_cross_connect_setup(wpa_s);
  		wpas_p2p_set_group_idle_timeout(wpa_s);
  		return;
  	}
  
  	wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
  	if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
  					      params->peer_interface_addr)) {
  		wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
  			   "filtering");
  		return;
  	}
  	if (params->wps_method == WPS_PBC)
  		wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
  					  params->peer_device_addr);
  	else if (wpa_s->p2p_pin[0])
  		wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
  					  wpa_s->p2p_pin, NULL, 0, 0);
  	os_free(wpa_s->go_params);
  	wpa_s->go_params = NULL;
  }
  
  
  static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
  			      struct p2p_go_neg_results *params,
  			      int group_formation)
  {
  	struct wpa_ssid *ssid;
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
  	if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
  			"results");
  		return;
  	}
  
  	ssid = wpa_config_add_network(wpa_s->conf);
  	if (ssid == NULL) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
  		return;
  	}
  
  	wpa_s->show_group_started = 0;
  
  	wpa_config_set_network_defaults(ssid);
  	ssid->temporary = 1;
  	ssid->p2p_group = 1;
  	ssid->p2p_persistent_group = params->persistent_group;
  	ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
  		WPAS_MODE_P2P_GO;
  	ssid->frequency = params->freq;
  	ssid->ht40 = params->ht40;
  	ssid->ssid = os_zalloc(params->ssid_len + 1);
  	if (ssid->ssid) {
  		os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
  		ssid->ssid_len = params->ssid_len;
  	}
  	ssid->auth_alg = WPA_AUTH_ALG_OPEN;
  	ssid->key_mgmt = WPA_KEY_MGMT_PSK;
  	ssid->proto = WPA_PROTO_RSN;
  	ssid->pairwise_cipher = WPA_CIPHER_CCMP;
  	if (os_strlen(params->passphrase) > 0) {
  		ssid->passphrase = os_strdup(params->passphrase);
  		if (ssid->passphrase == NULL) {
  			wpa_msg_global(wpa_s, MSG_ERROR,
  				       "P2P: Failed to copy passphrase for GO");
  			wpa_config_remove_network(wpa_s->conf, ssid->id);
  			return;
  		}
  	} else
  		ssid->passphrase = NULL;
  	ssid->psk_set = params->psk_set;
  	if (ssid->psk_set)
  		os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
  	else if (ssid->passphrase)
  		wpa_config_update_psk(ssid);
  	ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
  
  	wpa_s->ap_configured_cb = p2p_go_configured;
  	wpa_s->ap_configured_cb_ctx = wpa_s;
  	wpa_s->ap_configured_cb_data = wpa_s->go_params;
  	wpa_s->connect_without_scan = ssid;
  	wpa_s->reassociate = 1;
  	wpa_s->disconnected = 0;
  	wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
  		"start GO)");
  	wpa_supplicant_req_scan(wpa_s, 0, 0);
  }
  
  
  static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
  				  const struct wpa_supplicant *src)
  {
  	struct wpa_config *d;
  	const struct wpa_config *s;
  
  	d = dst->conf;
  	s = src->conf;
  
  #define C(n) if (s->n) d->n = os_strdup(s->n)
  	C(device_name);
  	C(manufacturer);
  	C(model_name);
  	C(model_number);
  	C(serial_number);
  	C(config_methods);
  #undef C
  
  	os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
  	os_memcpy(d->sec_device_type, s->sec_device_type,
  		  sizeof(d->sec_device_type));
  	d->num_sec_device_types = s->num_sec_device_types;
  
  	d->p2p_group_idle = s->p2p_group_idle;
  	d->p2p_intra_bss = s->p2p_intra_bss;
  	d->persistent_reconnect = s->persistent_reconnect;
  	d->max_num_sta = s->max_num_sta;
  	d->pbc_in_m1 = s->pbc_in_m1;
  	d->ignore_old_scan_res = s->ignore_old_scan_res;
  	d->beacon_int = s->beacon_int;
  	d->disassoc_low_ack = s->disassoc_low_ack;
  }
  
  
  static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
  				      char *ifname, size_t len)
  {
  	char *ifname_ptr = wpa_s->ifname;
  
  	if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
  		       os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
  		ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
  	}
  
  	os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
  	if (os_strlen(ifname) >= IFNAMSIZ &&
  	    os_strlen(wpa_s->ifname) < IFNAMSIZ) {
  		/* Try to avoid going over the IFNAMSIZ length limit */
  		os_snprintf(ifname, sizeof(ifname), "p2p-%d",
  			    wpa_s->p2p_group_idx);
  	}
  }
  
  
  static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
  					enum wpa_driver_if_type type)
  {
  	char ifname[120], force_ifname[120];
  
  	if (wpa_s->pending_interface_name[0]) {
  		wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
  			   "- skip creation of a new one");
  		if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
  			wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
  				   "unknown?! ifname='%s'",
  				   wpa_s->pending_interface_name);
  			return -1;
  		}
  		return 0;
  	}
  
  	wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
  	force_ifname[0] = '\0';
  
  	wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
  		   ifname);
  	wpa_s->p2p_group_idx++;
  
  	wpa_s->pending_interface_type = type;
  	if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
  			   wpa_s->pending_interface_addr, NULL) < 0) {
  		wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
  			   "interface");
  		return -1;
  	}
  
  	if (force_ifname[0]) {
  		wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
  			   force_ifname);
  		os_strlcpy(wpa_s->pending_interface_name, force_ifname,
  			   sizeof(wpa_s->pending_interface_name));
  	} else
  		os_strlcpy(wpa_s->pending_interface_name, ifname,
  			   sizeof(wpa_s->pending_interface_name));
  	wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
  		   MACSTR, wpa_s->pending_interface_name,
  		   MAC2STR(wpa_s->pending_interface_addr));
  
  	return 0;
  }
  
  
  static void wpas_p2p_remove_pending_group_interface(
  	struct wpa_supplicant *wpa_s)
  {
  	if (!wpa_s->pending_interface_name[0] ||
  	    is_zero_ether_addr(wpa_s->pending_interface_addr))
  		return; /* No pending virtual interface */
  
  	wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
  		   wpa_s->pending_interface_name);
  	wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
  			  wpa_s->pending_interface_name);
  	os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
  	wpa_s->pending_interface_name[0] = '\0';
  }
  
  
  static struct wpa_supplicant *
  wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
  {
  	struct wpa_interface iface;
  	struct wpa_supplicant *group_wpa_s;
  
  	if (!wpa_s->pending_interface_name[0]) {
  		wpa_printf(MSG_ERROR, "P2P: No pending group interface");
  		if (!wpas_p2p_create_iface(wpa_s))
  			return NULL;
  		/*
  		 * Something has forced us to remove the pending interface; try
  		 * to create a new one and hope for the best that we will get
  		 * the same local address.
  		 */
  		if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
  						 WPA_IF_P2P_CLIENT) < 0)
  			return NULL;
  	}
  
  	os_memset(&iface, 0, sizeof(iface));
  	iface.ifname = wpa_s->pending_interface_name;
  	iface.driver = wpa_s->driver->name;
  	if (wpa_s->conf->ctrl_interface == NULL &&
  	    wpa_s->parent != wpa_s &&
  	    wpa_s->p2p_mgmt &&
  	    (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
  		iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
  	else
  		iface.ctrl_interface = wpa_s->conf->ctrl_interface;
  	iface.driver_param = wpa_s->conf->driver_param;
  	group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
  	if (group_wpa_s == NULL) {
  		wpa_printf(MSG_ERROR, "P2P: Failed to create new "
  			   "wpa_supplicant interface");
  		return NULL;
  	}
  	wpa_s->pending_interface_name[0] = '\0';
  	group_wpa_s->parent = wpa_s;
  	group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
  		P2P_GROUP_INTERFACE_CLIENT;
  	wpa_s->global->p2p_group_formation = group_wpa_s;
  
  	wpas_p2p_clone_config(group_wpa_s, wpa_s);
  
  	return group_wpa_s;
  }
  
  
  static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
  					     void *timeout_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  	wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
  	wpas_p2p_group_formation_failed(wpa_s);
  }
  
  
  void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
  {
  	eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
  			     wpa_s->parent, NULL);
  	if (wpa_s->global->p2p)
  		p2p_group_formation_failed(wpa_s->global->p2p);
  	else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		wpa_drv_p2p_group_formation_failed(wpa_s);
  	wpas_group_formation_completed(wpa_s, 0);
  }
  
  
  void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
  {
  	if (wpa_s->global->p2p_group_formation != wpa_s)
  		return;
  	/* Speed up group formation timeout since this cannot succeed */
  	eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
  			     wpa_s->parent, NULL);
  	eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
  			       wpa_s->parent, NULL);
  }
  
  
  void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  
  	if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
  		wpa_drv_cancel_remain_on_channel(wpa_s);
  		wpa_s->off_channel_freq = 0;
  		wpa_s->roc_waiting_drv_freq = 0;
  	}
  
  	if (res->status) {
  		wpa_msg_global(wpa_s, MSG_INFO,
  			       P2P_EVENT_GO_NEG_FAILURE "status=%d",
  			       res->status);
  		wpas_notify_p2p_go_neg_completed(wpa_s, res);
  		wpas_p2p_remove_pending_group_interface(wpa_s);
  		return;
  	}
  
  	if (wpa_s->p2p_go_ht40)
  		res->ht40 = 1;
  
  	wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
  		       "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
  		       " wps_method=%s",
  		       res->role_go ? "GO" : "client", res->freq, res->ht40,
  		       MAC2STR(res->peer_device_addr),
  		       MAC2STR(res->peer_interface_addr),
  		       p2p_wps_method_text(res->wps_method));
  	wpas_notify_p2p_go_neg_completed(wpa_s, res);
  
  	if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
  		struct wpa_ssid *ssid;
  		ssid = wpa_config_get_network(wpa_s->conf,
  					      wpa_s->p2p_persistent_id);
  		if (ssid && ssid->disabled == 2 &&
  		    ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
  			size_t len = os_strlen(ssid->passphrase);
  			wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
  				   "on requested persistent group");
  			os_memcpy(res->passphrase, ssid->passphrase, len);
  			res->passphrase[len] = '\0';
  		}
  	}
  
  	if (wpa_s->create_p2p_iface) {
  		struct wpa_supplicant *group_wpa_s =
  			wpas_p2p_init_group_interface(wpa_s, res->role_go);
  		if (group_wpa_s == NULL) {
  			wpas_p2p_remove_pending_group_interface(wpa_s);
  			return;
  		}
  		if (group_wpa_s != wpa_s) {
  			os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
  				  sizeof(group_wpa_s->p2p_pin));
  			group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
  		}
  		os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
  		wpa_s->pending_interface_name[0] = '\0';
  		group_wpa_s->p2p_in_provisioning = 1;
  
  		if (res->role_go)
  			wpas_start_wps_go(group_wpa_s, res, 1);
  		else
  			wpas_start_wps_enrollee(group_wpa_s, res);
  	} else {
  		wpa_s->p2p_in_provisioning = 1;
  		wpa_s->global->p2p_group_formation = wpa_s;
  
  		if (res->role_go)
  			wpas_start_wps_go(wpa_s, res, 1);
  		else
  			wpas_start_wps_enrollee(ctx, res);
  	}
  
  	wpa_s->p2p_long_listen = 0;
  	eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
  
  	eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
  	eloop_register_timeout(15 + res->peer_config_timeout / 100,
  			       (res->peer_config_timeout % 100) * 10000,
  			       wpas_p2p_group_formation_timeout, wpa_s, NULL);
  }
  
  
  void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
  		       " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
  
  	wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
  }
  
  
  void wpas_dev_found(void *ctx, const u8 *addr,
  		    const struct p2p_peer_info *info,
  		    int new_device)
  {
  #ifndef CONFIG_NO_STDOUT_DEBUG
  	struct wpa_supplicant *wpa_s = ctx;
  	char devtype[WPS_DEV_TYPE_BUFSIZE];
  #define WFD_DEV_INFO_SIZE 9
  	char wfd_dev_info_hex[2 * WFD_DEV_INFO_SIZE + 1];
  	os_memset(wfd_dev_info_hex, 0, sizeof(wfd_dev_info_hex));
  #ifdef CONFIG_WIFI_DISPLAY
  	if (info->wfd_subelems) {
  		wpa_snprintf_hex(wfd_dev_info_hex, sizeof(wfd_dev_info_hex),
  					wpabuf_head(info->wfd_subelems),
  					WFD_DEV_INFO_SIZE);
  	}
  #endif /* CONFIG_WIFI_DISPLAY */
  	wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
  		       " p2p_dev_addr=" MACSTR
  		       " pri_dev_type=%s name='%s' config_methods=0x%x "
  		       "dev_capab=0x%x group_capab=0x%x%s%s",
  		       MAC2STR(addr), MAC2STR(info->p2p_device_addr),
  		       wps_dev_type_bin2str(info->pri_dev_type, devtype,
  					    sizeof(devtype)),
  		       info->device_name, info->config_methods,
  		       info->dev_capab, info->group_capab,
  		       wfd_dev_info_hex[0] ? " wfd_dev_info=0x" : "", wfd_dev_info_hex);
  #endif /* CONFIG_NO_STDOUT_DEBUG */
  
  	wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
  }
  
  
  static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  
  	wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
  		       "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
  
  	wpas_notify_p2p_device_lost(wpa_s, dev_addr);
  }
  
  
  static void wpas_find_stopped(void *ctx)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
  }
  
  
  static int wpas_start_listen(void *ctx, unsigned int freq,
  			     unsigned int duration,
  			     const struct wpabuf *probe_resp_ie)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  
  	wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
  
  	if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
  		wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
  			   "report received Probe Request frames");
  		return -1;
  	}
  
  	wpa_s->pending_listen_freq = freq;
  	wpa_s->pending_listen_duration = duration;
  
  	if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
  		wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
  			   "to remain on channel (%u MHz) for Listen "
  			   "state", freq);
  		wpa_s->pending_listen_freq = 0;
  		return -1;
  	}
  	wpa_s->off_channel_freq = 0;
  	wpa_s->roc_waiting_drv_freq = freq;
  
  	return 0;
  }
  
  
  static void wpas_stop_listen(void *ctx)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
  		wpa_drv_cancel_remain_on_channel(wpa_s);
  		wpa_s->off_channel_freq = 0;
  		wpa_s->roc_waiting_drv_freq = 0;
  	}
  	wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
  	wpa_drv_probe_req_report(wpa_s, 0);
  }
  
  
  static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
  }
  
  
  /*
   * DNS Header section is used only to calculate compression pointers, so the
   * contents of this data does not matter, but the length needs to be reserved
   * in the virtual packet.
   */
  #define DNS_HEADER_LEN 12
  
  /*
   * 27-octet in-memory packet from P2P specification containing two implied
   * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
   */
  #define P2P_SD_IN_MEMORY_LEN 27
  
  static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
  				       u8 **spos, const u8 *end)
  {
  	while (*spos < end) {
  		u8 val = ((*spos)[0] & 0xc0) >> 6;
  		int len;
  
  		if (val == 1 || val == 2) {
  			/* These are reserved values in RFC 1035 */
  			wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
  				   "sequence starting with 0x%x", val);
  			return -1;
  		}
  
  		if (val == 3) {
  			u16 offset;
  			u8 *spos_tmp;
  
  			/* Offset */
  			if (*spos + 2 > end) {
  				wpa_printf(MSG_DEBUG, "P2P: No room for full "
  					   "DNS offset field");
  				return -1;
  			}
  
  			offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
  			if (offset >= *spos - start) {
  				wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
  					   "pointer offset %u", offset);
  				return -1;
  			}
  
  			(*spos) += 2;
  			spos_tmp = start + offset;
  			return p2p_sd_dns_uncompress_label(upos, uend, start,
  							   &spos_tmp,
  							   *spos - 2);
  		}
  
  		/* Label */
  		len = (*spos)[0] & 0x3f;
  		if (len == 0)
  			return 0;
  
  		(*spos)++;
  		if (*spos + len > end) {
  			wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
  				   "sequence - no room for label with length "
  				   "%u", len);
  			return -1;
  		}
  
  		if (*upos + len + 2 > uend)
  			return -2;
  
  		os_memcpy(*upos, *spos, len);
  		*spos += len;
  		*upos += len;
  		(*upos)[0] = '.';
  		(*upos)++;
  		(*upos)[0] = '\0';
  	}
  
  	return 0;
  }
  
  
  /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
   * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
   * not large enough */
  static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
  				 size_t msg_len, size_t offset)
  {
  	/* 27-octet in-memory packet from P2P specification */
  	const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
  		"\x04_udp\xC0\x11\x00\x0C\x00\x01";
  	u8 *tmp, *end, *spos;
  	char *upos, *uend;
  	int ret = 0;
  
  	if (buf_len < 2)
  		return -1;
  	if (offset > msg_len)
  		return -1;
  
  	tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
  	if (tmp == NULL)
  		return -1;
  	spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
  	end = spos + msg_len;
  	spos += offset;
  
  	os_memset(tmp, 0, DNS_HEADER_LEN);
  	os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
  	os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
  
  	upos = buf;
  	uend = buf + buf_len;
  
  	ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
  	if (ret) {
  		os_free(tmp);
  		return ret;
  	}
  
  	if (upos == buf) {
  		upos[0] = '.';
  		upos[1] = '\0';
  	} else if (upos[-1] == '.')
  		upos[-1] = '\0';
  
  	os_free(tmp);
  	return 0;
  }
  
  
  static struct p2p_srv_bonjour *
  wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
  			     const struct wpabuf *query)
  {
  	struct p2p_srv_bonjour *bsrv;
  	size_t len;
  
  	len = wpabuf_len(query);
  	dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
  			 struct p2p_srv_bonjour, list) {
  		if (len == wpabuf_len(bsrv->query) &&
  		    os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
  			      len) == 0)
  			return bsrv;
  	}
  	return NULL;
  }
  
  
  static struct p2p_srv_upnp *
  wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
  			  const char *service)
  {
  	struct p2p_srv_upnp *usrv;
  
  	dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
  			 struct p2p_srv_upnp, list) {
  		if (version == usrv->version &&
  		    os_strcmp(service, usrv->service) == 0)
  			return usrv;
  	}
  	return NULL;
  }
  
  
  static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
  					u8 srv_trans_id)
  {
  	u8 *len_pos;
  
  	if (wpabuf_tailroom(resp) < 5)
  		return;
  
  	/* Length (to be filled) */
  	len_pos = wpabuf_put(resp, 2);
  	wpabuf_put_u8(resp, srv_proto);
  	wpabuf_put_u8(resp, srv_trans_id);
  	/* Status Code */
  	wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
  	/* Response Data: empty */
  	WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
  }
  
  
  static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
  				struct wpabuf *resp, u8 srv_trans_id)
  {
  	struct p2p_srv_bonjour *bsrv;
  	u8 *len_pos;
  
  	wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
  
  	if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
  		wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
  		return;
  	}
  
  	dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
  			 struct p2p_srv_bonjour, list) {
  		if (wpabuf_tailroom(resp) <
  		    5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
  			return;
  		/* Length (to be filled) */
  		len_pos = wpabuf_put(resp, 2);
  		wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
  		wpabuf_put_u8(resp, srv_trans_id);
  		/* Status Code */
  		wpabuf_put_u8(resp, P2P_SD_SUCCESS);
  		wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
  				  wpabuf_head(bsrv->resp),
  				  wpabuf_len(bsrv->resp));
  		/* Response Data */
  		wpabuf_put_buf(resp, bsrv->query); /* Key */
  		wpabuf_put_buf(resp, bsrv->resp); /* Value */
  		WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
  			     2);
  	}
  }
  
  
  static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
  			       size_t query_len)
  {
  	char str_rx[256], str_srv[256];
  
  	if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
  		return 0; /* Too short to include DNS Type and Version */
  	if (os_memcmp(query + query_len - 3,
  		      wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
  		      3) != 0)
  		return 0; /* Mismatch in DNS Type or Version */
  	if (query_len == wpabuf_len(bsrv->query) &&
  	    os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
  		return 1; /* Binary match */
  
  	if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
  				  0))
  		return 0; /* Failed to uncompress query */
  	if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
  				  wpabuf_head(bsrv->query),
  				  wpabuf_len(bsrv->query) - 3, 0))
  		return 0; /* Failed to uncompress service */
  
  	return os_strcmp(str_rx, str_srv) == 0;
  }
  
  
  static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
  				struct wpabuf *resp, u8 srv_trans_id,
  				const u8 *query, size_t query_len)
  {
  	struct p2p_srv_bonjour *bsrv;
  	u8 *len_pos;
  	int matches = 0;
  
  	wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
  			  query, query_len);
  	if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
  		wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
  		wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
  					    srv_trans_id);
  		return;
  	}
  
  	if (query_len == 0) {
  		wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
  		return;
  	}
  
  	dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
  			 struct p2p_srv_bonjour, list) {
  		if (!match_bonjour_query(bsrv, query, query_len))
  			continue;
  
  		if (wpabuf_tailroom(resp) <
  		    5 + query_len + wpabuf_len(bsrv->resp))
  			return;
  
  		matches++;
  
  		/* Length (to be filled) */
  		len_pos = wpabuf_put(resp, 2);
  		wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
  		wpabuf_put_u8(resp, srv_trans_id);
  
  		/* Status Code */
  		wpabuf_put_u8(resp, P2P_SD_SUCCESS);
  		wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
  				  wpabuf_head(bsrv->resp),
  				  wpabuf_len(bsrv->resp));
  
  		/* Response Data */
  		wpabuf_put_data(resp, query, query_len); /* Key */
  		wpabuf_put_buf(resp, bsrv->resp); /* Value */
  
  		WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
  	}
  
  	if (matches == 0) {
  		wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
  			   "available");
  		if (wpabuf_tailroom(resp) < 5)
  			return;
  
  		/* Length (to be filled) */
  		len_pos = wpabuf_put(resp, 2);
  		wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
  		wpabuf_put_u8(resp, srv_trans_id);
  
  		/* Status Code */
  		wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
  		/* Response Data: empty */
  		WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
  			     2);
  	}
  }
  
  
  static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
  			     struct wpabuf *resp, u8 srv_trans_id)
  {
  	struct p2p_srv_upnp *usrv;
  	u8 *len_pos;
  
  	wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
  
  	if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
  		wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
  		return;
  	}
  
  	dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
  			 struct p2p_srv_upnp, list) {
  		if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
  			return;
  
  		/* Length (to be filled) */
  		len_pos = wpabuf_put(resp, 2);
  		wpabuf_put_u8(resp, P2P_SERV_UPNP);
  		wpabuf_put_u8(resp, srv_trans_id);
  
  		/* Status Code */
  		wpabuf_put_u8(resp, P2P_SD_SUCCESS);
  		/* Response Data */
  		wpabuf_put_u8(resp, usrv->version);
  		wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
  			   usrv->service);
  		wpabuf_put_str(resp, usrv->service);
  		WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
  			     2);
  	}
  }
  
  
  static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
  			     struct wpabuf *resp, u8 srv_trans_id,
  			     const u8 *query, size_t query_len)
  {
  	struct p2p_srv_upnp *usrv;
  	u8 *len_pos;
  	u8 version;
  	char *str;
  	int count = 0;
  
  	wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
  			  query, query_len);
  
  	if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
  		wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
  		wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
  					    srv_trans_id);
  		return;
  	}
  
  	if (query_len == 0) {
  		wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
  		return;
  	}
  
  	if (wpabuf_tailroom(resp) < 5)
  		return;
  
  	/* Length (to be filled) */
  	len_pos = wpabuf_put(resp, 2);
  	wpabuf_put_u8(resp, P2P_SERV_UPNP);
  	wpabuf_put_u8(resp, srv_trans_id);
  
  	version = query[0];
  	str = os_malloc(query_len);
  	if (str == NULL)
  		return;
  	os_memcpy(str, query + 1, query_len - 1);
  	str[query_len - 1] = '\0';
  
  	dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
  			 struct p2p_srv_upnp, list) {
  		if (version != usrv->version)
  			continue;
  
  		if (os_strcmp(str, "ssdp:all") != 0 &&
  		    os_strstr(usrv->service, str) == NULL)
  			continue;
  
  		if (wpabuf_tailroom(resp) < 2)
  			break;
  		if (count == 0) {
  			/* Status Code */
  			wpabuf_put_u8(resp, P2P_SD_SUCCESS);
  			/* Response Data */
  			wpabuf_put_u8(resp, version);
  		} else
  			wpabuf_put_u8(resp, ',');
  
  		count++;
  
  		wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
  			   usrv->service);
  		if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
  			break;
  		wpabuf_put_str(resp, usrv->service);
  	}
  	os_free(str);
  
  	if (count == 0) {
  		wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
  			   "available");
  		/* Status Code */
  		wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
  		/* Response Data: empty */
  	}
  
  	WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
  }
  
  
  #ifdef CONFIG_WIFI_DISPLAY
  static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
  			    struct wpabuf *resp, u8 srv_trans_id,
  			    const u8 *query, size_t query_len)
  {
  	const u8 *pos;
  	u8 role;
  	u8 *len_pos;
  
  	wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
  
  	if (!wpa_s->global->wifi_display) {
  		wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
  		wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
  					    srv_trans_id);
  		return;
  	}
  
  	if (query_len < 1) {
  		wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
  			   "Role");
  		return;
  	}
  
  	if (wpabuf_tailroom(resp) < 5)
  		return;
  
  	pos = query;
  	role = *pos++;
  	wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
  
  	/* TODO: role specific handling */
  
  	/* Length (to be filled) */
  	len_pos = wpabuf_put(resp, 2);
  	wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
  	wpabuf_put_u8(resp, srv_trans_id);
  	wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
  
  	while (pos < query + query_len) {
  		if (*pos < MAX_WFD_SUBELEMS &&
  		    wpa_s->global->wfd_subelem[*pos] &&
  		    wpabuf_tailroom(resp) >=
  		    wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
  			wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
  				   "subelement %u", *pos);
  			wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
  		}
  		pos++;
  	}
  
  	WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
  }
  #endif /* CONFIG_WIFI_DISPLAY */
  
  
  void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
  		     u16 update_indic, const u8 *tlvs, size_t tlvs_len)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	const u8 *pos = tlvs;
  	const u8 *end = tlvs + tlvs_len;
  	const u8 *tlv_end;
  	u16 slen;
  	struct wpabuf *resp;
  	u8 srv_proto, srv_trans_id;
  	size_t buf_len;
  	char *buf;
  
  	wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
  		    tlvs, tlvs_len);
  	buf_len = 2 * tlvs_len + 1;
  	buf = os_malloc(buf_len);
  	if (buf) {
  		wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
  		wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
  			     MACSTR " %u %u %s",
  			     freq, MAC2STR(sa), dialog_token, update_indic,
  			     buf);
  		os_free(buf);
  	}
  
  	if (wpa_s->p2p_sd_over_ctrl_iface) {
  		wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
  					   update_indic, tlvs, tlvs_len);
  		return; /* to be processed by an external program */
  	}
  
  	resp = wpabuf_alloc(10000);
  	if (resp == NULL)
  		return;
  
  	while (pos + 1 < end) {
  		wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
  		slen = WPA_GET_LE16(pos);
  		pos += 2;
  		if (pos + slen > end || slen < 2) {
  			wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
  				   "length");
  			wpabuf_free(resp);
  			return;
  		}
  		tlv_end = pos + slen;
  
  		srv_proto = *pos++;
  		wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
  			   srv_proto);
  		srv_trans_id = *pos++;
  		wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
  			   srv_trans_id);
  
  		wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
  			    pos, tlv_end - pos);
  
  
  		if (wpa_s->force_long_sd) {
  			wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
  				   "response");
  			wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
  			wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
  			goto done;
  		}
  
  		switch (srv_proto) {
  		case P2P_SERV_ALL_SERVICES:
  			wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
  				   "for all services");
  			if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
  			    dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
  				wpa_printf(MSG_DEBUG, "P2P: No service "
  					   "discovery protocols available");
  				wpas_sd_add_proto_not_avail(
  					resp, P2P_SERV_ALL_SERVICES,
  					srv_trans_id);
  				break;
  			}
  			wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
  			wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
  			break;
  		case P2P_SERV_BONJOUR:
  			wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
  					    pos, tlv_end - pos);
  			break;
  		case P2P_SERV_UPNP:
  			wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
  					 pos, tlv_end - pos);
  			break;
  #ifdef CONFIG_WIFI_DISPLAY
  		case P2P_SERV_WIFI_DISPLAY:
  			wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
  					pos, tlv_end - pos);
  			break;
  #endif /* CONFIG_WIFI_DISPLAY */
  		default:
  			wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
  				   "protocol %u", srv_proto);
  			wpas_sd_add_proto_not_avail(resp, srv_proto,
  						    srv_trans_id);
  			break;
  		}
  
  		pos = tlv_end;
  	}
  
  done:
  	wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
  				   update_indic, tlvs, tlvs_len);
  
  	wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
  
  	wpabuf_free(resp);
  }
  
  
  void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
  		      const u8 *tlvs, size_t tlvs_len)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	const u8 *pos = tlvs;
  	const u8 *end = tlvs + tlvs_len;
  	const u8 *tlv_end;
  	u16 slen;
  	size_t buf_len;
  	char *buf;
  
  	wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
  		    tlvs, tlvs_len);
  	if (tlvs_len > 1500) {
  		/* TODO: better way for handling this */
  		wpa_msg_ctrl(wpa_s, MSG_INFO,
  			     P2P_EVENT_SERV_DISC_RESP MACSTR
  			     " %u <long response: %u bytes>",
  			     MAC2STR(sa), update_indic,
  			     (unsigned int) tlvs_len);
  	} else {
  		buf_len = 2 * tlvs_len + 1;
  		buf = os_malloc(buf_len);
  		if (buf) {
  			wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
  			wpa_msg_ctrl(wpa_s, MSG_INFO,
  				     P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
  				     MAC2STR(sa), update_indic, buf);
  			os_free(buf);
  		}
  	}
  
  	while (pos < end) {
  		u8 srv_proto, srv_trans_id, status;
  
  		wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
  		slen = WPA_GET_LE16(pos);
  		pos += 2;
  		if (pos + slen > end || slen < 3) {
  			wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
  				   "length");
  			return;
  		}
  		tlv_end = pos + slen;
  
  		srv_proto = *pos++;
  		wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
  			   srv_proto);
  		srv_trans_id = *pos++;
  		wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
  			   srv_trans_id);
  		status = *pos++;
  		wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
  			   status);
  
  		wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
  			    pos, tlv_end - pos);
  
  		pos = tlv_end;
  	}
  
  	wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
  }
  
  
  u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
  			const struct wpabuf *tlvs)
  {
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return 0;
  	return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
  }
  
  
  u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
  			     u8 version, const char *query)
  {
  	struct wpabuf *tlvs;
  	u64 ret;
  
  	tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
  	if (tlvs == NULL)
  		return 0;
  	wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
  	wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
  	wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
  	wpabuf_put_u8(tlvs, version);
  	wpabuf_put_str(tlvs, query);
  	ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
  	wpabuf_free(tlvs);
  	return ret;
  }
  
  
  #ifdef CONFIG_WIFI_DISPLAY
  
  static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
  				   const struct wpabuf *tlvs)
  {
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return 0;
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return 0;
  	return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
  }
  
  
  #define MAX_WFD_SD_SUBELEMS 20
  
  static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
  				const char *subelems)
  {
  	u8 *len;
  	const char *pos;
  	int val;
  	int count = 0;
  
  	len = wpabuf_put(tlvs, 2);
  	wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
  	wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
  
  	wpabuf_put_u8(tlvs, role);
  
  	pos = subelems;
  	while (*pos) {
  		val = atoi(pos);
  		if (val >= 0 && val < 256) {
  			wpabuf_put_u8(tlvs, val);
  			count++;
  			if (count == MAX_WFD_SD_SUBELEMS)
  				break;
  		}
  		pos = os_strchr(pos + 1, ',');
  		if (pos == NULL)
  			break;
  		pos++;
  	}
  
  	WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
  }
  
  
  u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
  				     const u8 *dst, const char *role)
  {
  	struct wpabuf *tlvs;
  	u64 ret;
  	const char *subelems;
  	u8 id = 1;
  
  	subelems = os_strchr(role, ' ');
  	if (subelems == NULL)
  		return 0;
  	subelems++;
  
  	tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
  	if (tlvs == NULL)
  		return 0;
  
  	if (os_strstr(role, "[source]"))
  		wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
  	if (os_strstr(role, "[pri-sink]"))
  		wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
  	if (os_strstr(role, "[sec-sink]"))
  		wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
  	if (os_strstr(role, "[source+sink]"))
  		wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
  
  	ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
  	wpabuf_free(tlvs);
  	return ret;
  }
  
  #endif /* CONFIG_WIFI_DISPLAY */
  
  
  int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
  {
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return -1;
  	return p2p_sd_cancel_request(wpa_s->global->p2p,
  				     (void *) (uintptr_t) req);
  }
  
  
  void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
  			  const u8 *dst, u8 dialog_token,
  			  const struct wpabuf *resp_tlvs)
  {
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
  		wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
  					resp_tlvs);
  		return;
  	}
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return;
  	p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
  			resp_tlvs);
  }
  
  
  void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
  {
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
  		wpa_drv_p2p_service_update(wpa_s);
  		return;
  	}
  	if (wpa_s->global->p2p)
  		p2p_sd_service_update(wpa_s->global->p2p);
  }
  
  
  static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
  {
  	dl_list_del(&bsrv->list);
  	wpabuf_free(bsrv->query);
  	wpabuf_free(bsrv->resp);
  	os_free(bsrv);
  }
  
  
  static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
  {
  	dl_list_del(&usrv->list);
  	os_free(usrv->service);
  	os_free(usrv);
  }
  
  
  void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
  {
  	struct p2p_srv_bonjour *bsrv, *bn;
  	struct p2p_srv_upnp *usrv, *un;
  
  	dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
  			      struct p2p_srv_bonjour, list)
  		wpas_p2p_srv_bonjour_free(bsrv);
  
  	dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
  			      struct p2p_srv_upnp, list)
  		wpas_p2p_srv_upnp_free(usrv);
  
  	wpas_p2p_sd_service_update(wpa_s);
  }
  
  
  int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
  				 struct wpabuf *query, struct wpabuf *resp)
  {
  	struct p2p_srv_bonjour *bsrv;
  
  	bsrv = os_zalloc(sizeof(*bsrv));
  	if (bsrv == NULL)
  		return -1;
  	bsrv->query = query;
  	bsrv->resp = resp;
  	dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
  
  	wpas_p2p_sd_service_update(wpa_s);
  	return 0;
  }
  
  
  int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
  				 const struct wpabuf *query)
  {
  	struct p2p_srv_bonjour *bsrv;
  
  	bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
  	if (bsrv == NULL)
  		return -1;
  	wpas_p2p_srv_bonjour_free(bsrv);
  	wpas_p2p_sd_service_update(wpa_s);
  	return 0;
  }
  
  
  int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
  			      const char *service)
  {
  	struct p2p_srv_upnp *usrv;
  
  	if (wpas_p2p_service_get_upnp(wpa_s, version, service))
  		return 0; /* Already listed */
  	usrv = os_zalloc(sizeof(*usrv));
  	if (usrv == NULL)
  		return -1;
  	usrv->version = version;
  	usrv->service = os_strdup(service);
  	if (usrv->service == NULL) {
  		os_free(usrv);
  		return -1;
  	}
  	dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
  
  	wpas_p2p_sd_service_update(wpa_s);
  	return 0;
  }
  
  
  int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
  			      const char *service)
  {
  	struct p2p_srv_upnp *usrv;
  
  	usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
  	if (usrv == NULL)
  		return -1;
  	wpas_p2p_srv_upnp_free(usrv);
  	wpas_p2p_sd_service_update(wpa_s);
  	return 0;
  }
  
  
  static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
  					 const u8 *peer, const char *params,
  					 unsigned int generated_pin)
  {
  	wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
  		       " %08d%s", MAC2STR(peer), generated_pin, params);
  }
  
  
  static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
  					const u8 *peer, const char *params)
  {
  	wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
  		       "%s", MAC2STR(peer), params);
  }
  
  
  void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
  			const u8 *dev_addr, const u8 *pri_dev_type,
  			const char *dev_name, u16 supp_config_methods,
  			u8 dev_capab, u8 group_capab, const u8 *group_id,
  			size_t group_id_len)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	char devtype[WPS_DEV_TYPE_BUFSIZE];
  	char params[300];
  	u8 empty_dev_type[8];
  	unsigned int generated_pin = 0;
  	struct wpa_supplicant *group = NULL;
  
  	if (group_id) {
  		for (group = wpa_s->global->ifaces; group; group = group->next)
  		{
  			struct wpa_ssid *s = group->current_ssid;
  			if (s != NULL &&
  			    s->mode == WPAS_MODE_P2P_GO &&
  			    group_id_len - ETH_ALEN == s->ssid_len &&
  			    os_memcmp(group_id + ETH_ALEN, s->ssid,
  				      s->ssid_len) == 0)
  				break;
  		}
  	}
  
  	if (pri_dev_type == NULL) {
  		os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
  		pri_dev_type = empty_dev_type;
  	}
  	os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
  		    " pri_dev_type=%s name='%s' config_methods=0x%x "
  		    "dev_capab=0x%x group_capab=0x%x%s%s",
  		    MAC2STR(dev_addr),
  		    wps_dev_type_bin2str(pri_dev_type, devtype,
  					 sizeof(devtype)),
  		    dev_name, supp_config_methods, dev_capab, group_capab,
  		    group ? " group=" : "",
  		    group ? group->ifname : "");
  	params[sizeof(params) - 1] = '\0';
  
  	if (config_methods & WPS_CONFIG_DISPLAY) {
  		generated_pin = wps_generate_pin();
  		wpas_prov_disc_local_display(wpa_s, peer, params,
  					     generated_pin);
  	} else if (config_methods & WPS_CONFIG_KEYPAD)
  		wpas_prov_disc_local_keypad(wpa_s, peer, params);
  	else if (config_methods & WPS_CONFIG_PUSHBUTTON)
  		wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
  			       MACSTR "%s", MAC2STR(peer), params);
  
  	wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
  					    P2P_PROV_DISC_SUCCESS,
  					    config_methods, generated_pin);
  }
  
  
  void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	unsigned int generated_pin = 0;
  	char params[20];
  
  	if (wpa_s->pending_pd_before_join &&
  	    (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
  	     os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
  		wpa_s->pending_pd_before_join = 0;
  		wpa_printf(MSG_DEBUG, "P2P: Starting pending "
  			   "join-existing-group operation");
  		wpas_p2p_join_start(wpa_s);
  		return;
  	}
  
  	if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
  	    wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
  		os_snprintf(params, sizeof(params), " peer_go=%d",
  			    wpa_s->pending_pd_use == AUTO_PD_JOIN);
  	else
  		params[0] = '\0';
  
  	if (config_methods & WPS_CONFIG_DISPLAY)
  		wpas_prov_disc_local_keypad(wpa_s, peer, params);
  	else if (config_methods & WPS_CONFIG_KEYPAD) {
  		generated_pin = wps_generate_pin();
  		wpas_prov_disc_local_display(wpa_s, peer, params,
  					     generated_pin);
  	} else if (config_methods & WPS_CONFIG_PUSHBUTTON)
  		wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
  			       MACSTR "%s", MAC2STR(peer), params);
  
  	wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
  					    P2P_PROV_DISC_SUCCESS,
  					    config_methods, generated_pin);
  }
  
  
  static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
  				enum p2p_prov_disc_status status)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  
  	if (wpa_s->p2p_fallback_to_go_neg) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
  			"failed - fall back to GO Negotiation");
  		wpas_p2p_fallback_to_go_neg(wpa_s, 0);
  		return;
  	}
  
  	if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
  		wpa_s->pending_pd_before_join = 0;
  		wpa_printf(MSG_DEBUG, "P2P: Starting pending "
  			   "join-existing-group operation (no ACK for PD "
  			   "Req attempts)");
  		wpas_p2p_join_start(wpa_s);
  		return;
  	}
  
  	wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
  		       " p2p_dev_addr=" MACSTR " status=%d",
  		       MAC2STR(peer), status);
  
  	wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
  					    status, 0, 0);
  }
  
  
  static int freq_included(const struct p2p_channels *channels, unsigned int freq)
  {
  	if (channels == NULL)
  		return 1; /* Assume no restrictions */
  	return p2p_channels_includes_freq(channels, freq);
  
  }
  
  
  static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
  				  const u8 *go_dev_addr, const u8 *ssid,
  				  size_t ssid_len, int *go, u8 *group_bssid,
  				  int *force_freq, int persistent_group,
  				  const struct p2p_channels *channels)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	struct wpa_ssid *s;
  	int res;
  	struct wpa_supplicant *grp;
  
  	if (!persistent_group) {
  		wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
  			   " to join an active group", MAC2STR(sa));
  		if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
  		    (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
  		     == 0 ||
  		     os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
  			wpa_printf(MSG_DEBUG, "P2P: Accept previously "
  				   "authorized invitation");
  			goto accept_inv;
  		}
  		/*
  		 * Do not accept the invitation automatically; notify user and
  		 * request approval.
  		 */
  		return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
  	}
  
  	grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
  	if (grp) {
  		wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
  			   "running persistent group");
  		if (*go)
  			os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
  		goto accept_inv;
  	}
  
  	if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
  	    os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
  		wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
  			   "invitation to re-invoke a persistent group");
  	} else if (!wpa_s->conf->persistent_reconnect)
  		return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
  
  	for (s = wpa_s->conf->ssid; s; s = s->next) {
  		if (s->disabled == 2 &&
  		    os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
  		    s->ssid_len == ssid_len &&
  		    os_memcmp(ssid, s->ssid, ssid_len) == 0)
  			break;
  	}
  
  	if (!s) {
  		wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
  			   " requested reinvocation of an unknown group",
  			   MAC2STR(sa));
  		return P2P_SC_FAIL_UNKNOWN_GROUP;
  	}
  
  	if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
  		*go = 1;
  		if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
  			wpa_printf(MSG_DEBUG, "P2P: The only available "
  				   "interface is already in use - reject "
  				   "invitation");
  			return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
  		}
  		os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
  	} else if (s->mode == WPAS_MODE_P2P_GO) {
  		*go = 1;
  		if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
  		{
  			wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
  				   "interface address for the group");
  			return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
  		}
  		os_memcpy(group_bssid, wpa_s->pending_interface_addr,
  			  ETH_ALEN);
  	}
  
  accept_inv:
  	wpas_p2p_set_own_freq_preference(wpa_s, 0);
  
  	/* Get one of the frequencies currently in use */
  	if (wpas_p2p_valid_oper_freqs(wpa_s, &res, 1) > 0) {
  		wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match a channel already used by one of the interfaces");
  		*force_freq = res;
  		wpas_p2p_set_own_freq_preference(wpa_s, res);
  	}
  
  	if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
  	    wpas_p2p_num_unused_channels(wpa_s) > 0) {
  		if (*go == 0) {
  			/* We are the client */
  			wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
  				   "running a GO but we are capable of MCC, "
  				   "figure out the best channel to use");
  			*force_freq = 0;
  		} else if (!freq_included(channels, *force_freq)) {
  			/* We are the GO, and *force_freq is not in the
  			 * intersection */
  			wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
  				   "in intersection but we are capable of MCC, "
  				   "figure out the best channel to use",
  				   *force_freq);
  			*force_freq = 0;
  		}
  	}
  
  	return P2P_SC_SUCCESS;
  }
  
  
  static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
  				     const u8 *ssid, size_t ssid_len,
  				     const u8 *go_dev_addr, u8 status,
  				     int op_freq)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	struct wpa_ssid *s;
  
  	for (s = wpa_s->conf->ssid; s; s = s->next) {
  		if (s->disabled == 2 &&
  		    s->ssid_len == ssid_len &&
  		    os_memcmp(ssid, s->ssid, ssid_len) == 0)
  			break;
  	}
  
  	if (status == P2P_SC_SUCCESS) {
  		wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
  			   " was accepted; op_freq=%d MHz",
  			   MAC2STR(sa), op_freq);
  		if (s) {
  			int go = s->mode == WPAS_MODE_P2P_GO;
  			wpas_p2p_group_add_persistent(
  				wpa_s, s, go, go ? op_freq : 0, 0, NULL);
  		} else if (bssid) {
  			wpa_s->user_initiated_pd = 0;
  			wpas_p2p_join(wpa_s, bssid, go_dev_addr,
  				      wpa_s->p2p_wps_method, 0);
  		}
  		return;
  	}
  
  	if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
  		wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
  			   " was rejected (status %u)", MAC2STR(sa), status);
  		return;
  	}
  
  	if (!s) {
  		if (bssid) {
  			wpa_msg_global(wpa_s, MSG_INFO,
  				       P2P_EVENT_INVITATION_RECEIVED
  				       "sa=" MACSTR " go_dev_addr=" MACSTR
  				       " bssid=" MACSTR " unknown-network",
  				       MAC2STR(sa), MAC2STR(go_dev_addr),
  				       MAC2STR(bssid));
  		} else {
  			wpa_msg_global(wpa_s, MSG_INFO,
  				       P2P_EVENT_INVITATION_RECEIVED
  				       "sa=" MACSTR " go_dev_addr=" MACSTR
  				       " unknown-network",
  				       MAC2STR(sa), MAC2STR(go_dev_addr));
  		}
  		return;
  	}
  
  	if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
  		wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
  			       "sa=" MACSTR " persistent=%d freq=%d",
  			       MAC2STR(sa), s->id, op_freq);
  	} else {
  		wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
  			       "sa=" MACSTR " persistent=%d",
  			       MAC2STR(sa), s->id);
  	}
  }
  
  
  static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
  					struct wpa_ssid *ssid,
  					const u8 *peer, int inv)
  {
  	size_t i;
  
  	if (ssid == NULL)
  		return;
  
  	for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
  		if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
  			      ETH_ALEN) == 0)
  			break;
  	}
  	if (i >= ssid->num_p2p_clients) {
  		if (ssid->mode != WPAS_MODE_P2P_GO &&
  		    os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
  			wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
  				   "due to invitation result", ssid->id);
  			wpas_notify_network_removed(wpa_s, ssid);
  			wpa_config_remove_network(wpa_s->conf, ssid->id);
  			return;
  		}
  		return; /* Peer not found in client list */
  	}
  
  	wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
  		   "group %d client list%s",
  		   MAC2STR(peer), ssid->id,
  		   inv ? " due to invitation result" : "");
  	os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
  		   ssid->p2p_client_list + (i + 1) * ETH_ALEN,
  		   (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
  	ssid->num_p2p_clients--;
  #ifndef CONFIG_NO_CONFIG_WRITE
  	if (wpa_s->parent->conf->update_config &&
  	    wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
  		wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
  #endif /* CONFIG_NO_CONFIG_WRITE */
  }
  
  
  static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
  					  const u8 *peer)
  {
  	struct wpa_ssid *ssid;
  
  	wpa_s = wpa_s->global->p2p_invite_group;
  	if (wpa_s == NULL)
  		return; /* No known invitation group */
  	ssid = wpa_s->current_ssid;
  	if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
  	    !ssid->p2p_persistent_group)
  		return; /* Not operating as a GO in persistent group */
  	ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
  				       ssid->ssid, ssid->ssid_len);
  	wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
  }
  
  
  static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
  				   const struct p2p_channels *channels,
  				   const u8 *peer)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	struct wpa_ssid *ssid;
  
  	if (bssid) {
  		wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
  			       "status=%d " MACSTR,
  			       status, MAC2STR(bssid));
  	} else {
  		wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
  			       "status=%d ", status);
  	}
  	wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
  
  	wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
  		   status, MAC2STR(peer));
  	if (wpa_s->pending_invite_ssid_id == -1) {
  		if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
  			wpas_remove_persistent_client(wpa_s, peer);
  		return; /* Invitation to active group */
  	}
  
  	if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
  		wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
  			   "invitation exchange to indicate readiness for "
  			   "re-invocation");
  	}
  
  	if (status != P2P_SC_SUCCESS) {
  		if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
  			ssid = wpa_config_get_network(
  				wpa_s->conf, wpa_s->pending_invite_ssid_id);
  			wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
  		}
  		wpas_p2p_remove_pending_group_interface(wpa_s);
  		return;
  	}
  
  	ssid = wpa_config_get_network(wpa_s->conf,
  				      wpa_s->pending_invite_ssid_id);
  	if (ssid == NULL) {
  		wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
  			   "data matching with invitation");
  		return;
  	}
  
  	/*
  	 * The peer could have missed our ctrl::ack frame for Invitation
  	 * Response and continue retransmitting the frame. To reduce the
  	 * likelihood of the peer not getting successful TX status for the
  	 * Invitation Response frame, wait a short time here before starting
  	 * the persistent group so that we will remain on the current channel to
  	 * acknowledge any possible retransmission from the peer.
  	 */
  #ifndef ANDROID_P2P
  	wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
  		"starting persistent group");
  	os_sleep(0, 50000);
  #else
  	wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 100 ms wait on current channel before "
  		"starting persistent group");
  	os_sleep(0, 100000);
  #endif
  
  	wpas_p2p_group_add_persistent(wpa_s, ssid,
  				      ssid->mode == WPAS_MODE_P2P_GO,
  				      wpa_s->p2p_persistent_go_freq,
  				      wpa_s->p2p_go_ht40, channels);
  }
  
  
  static int wpas_p2p_disallowed_freq(struct wpa_global *global,
  				    unsigned int freq)
  {
  	unsigned int i;
  
  	if (global->p2p_disallow_freq == NULL)
  		return 0;
  
  	for (i = 0; i < global->num_p2p_disallow_freq; i++) {
  		if (freq >= global->p2p_disallow_freq[i].min &&
  		    freq <= global->p2p_disallow_freq[i].max)
  			return 1;
  	}
  
  	return 0;
  }
  
  
  static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
  {
  	reg->channel[reg->channels] = chan;
  	reg->channels++;
  }
  
  
  static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
  				     struct p2p_channels *chan)
  {
  	int i, cla = 0;
  
  	wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
  		   "band");
  
  	/* Operating class 81 - 2.4 GHz band channels 1..13 */
  	chan->reg_class[cla].reg_class = 81;
  	chan->reg_class[cla].channels = 0;
  	for (i = 0; i < 11; i++) {
  		if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
  			wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
  	}
  	if (chan->reg_class[cla].channels)
  		cla++;
  
  	wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
  		   "band");
  
  	/* Operating class 115 - 5 GHz, channels 36-48 */
  	chan->reg_class[cla].reg_class = 115;
  	chan->reg_class[cla].channels = 0;
  	if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
  		wpas_p2p_add_chan(&chan->reg_class[cla], 36);
  	if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
  		wpas_p2p_add_chan(&chan->reg_class[cla], 40);
  	if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
  		wpas_p2p_add_chan(&chan->reg_class[cla], 44);
  	if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
  		wpas_p2p_add_chan(&chan->reg_class[cla], 48);
  	if (chan->reg_class[cla].channels)
  		cla++;
  
  	wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
  		   "band");
  
  	/* Operating class 124 - 5 GHz, channels 149,153,157,161 */
  	chan->reg_class[cla].reg_class = 124;
  	chan->reg_class[cla].channels = 0;
  	if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
  		wpas_p2p_add_chan(&chan->reg_class[cla], 149);
  	if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
  		wpas_p2p_add_chan(&chan->reg_class[cla], 153);
  	if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
  		wpas_p2p_add_chan(&chan->reg_class[cla], 157);
  	if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
  		wpas_p2p_add_chan(&chan->reg_class[cla], 161);
  	if (chan->reg_class[cla].channels)
  		cla++;
  
  	chan->reg_classes = cla;
  	return 0;
  }
  
  
  static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
  					  u16 num_modes,
  					  enum hostapd_hw_mode mode)
  {
  	u16 i;
  
  	for (i = 0; i < num_modes; i++) {
  		if (modes[i].mode == mode)
  			return &modes[i];
  	}
  
  	return NULL;
  }
  
  
  static int has_channel(struct wpa_global *global,
  		       struct hostapd_hw_modes *mode, u8 chan, int *flags)
  {
  	int i;
  	unsigned int freq;
  
  	freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
  		chan * 5;
  	if (wpas_p2p_disallowed_freq(global, freq))
  		return 0;
  
  	for (i = 0; i < mode->num_channels; i++) {
  		if (mode->channels[i].chan == chan) {
  			if (flags)
  				*flags = mode->channels[i].flag;
  			return !(mode->channels[i].flag &
  				 (HOSTAPD_CHAN_DISABLED |
  				  HOSTAPD_CHAN_PASSIVE_SCAN |
  				  HOSTAPD_CHAN_NO_IBSS |
  				  HOSTAPD_CHAN_RADAR));
  		}
  	}
  
  	return 0;
  }
  
  
  struct p2p_oper_class_map {
  	enum hostapd_hw_mode mode;
  	u8 op_class;
  	u8 min_chan;
  	u8 max_chan;
  	u8 inc;
  	enum { BW20, BW40PLUS, BW40MINUS } bw;
  };
  
  static struct p2p_oper_class_map op_class[] = {
  	{ HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
  #if 0 /* Do not enable HT40 on 2 GHz for now */
  	{ HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
  	{ HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
  #endif
  	{ HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
  	{ HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
  	{ HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
  	{ HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
  	{ HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
  	{ HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
  	{ -1, 0, 0, 0, 0, BW20 }
  };
  
  
  static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
  				   struct hostapd_hw_modes *mode,
  				   u8 channel, u8 bw)
  {
  	int flag;
  
  	if (!has_channel(wpa_s->global, mode, channel, &flag))
  		return -1;
  	if (bw == BW40MINUS &&
  	    (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
  	     !has_channel(wpa_s->global, mode, channel - 4, NULL)))
  		return 0;
  	if (bw == BW40PLUS &&
  	    (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
  	     !has_channel(wpa_s->global, mode, channel + 4, NULL)))
  		return 0;
  	return 1;
  }
  
  
  static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
  				   struct p2p_channels *chan)
  {
  	struct hostapd_hw_modes *mode;
  	int cla, op;
  
  	if (wpa_s->hw.modes == NULL) {
  		wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
  			   "of all supported channels; assume dualband "
  			   "support");
  		return wpas_p2p_default_channels(wpa_s, chan);
  	}
  
  	cla = 0;
  
  	for (op = 0; op_class[op].op_class; op++) {
  		struct p2p_oper_class_map *o = &op_class[op];
  		u8 ch;
  		struct p2p_reg_class *reg = NULL;
  
  		mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
  		if (mode == NULL)
  			continue;
  		for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
  			if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
  				continue;
  			if (reg == NULL) {
  				wpa_printf(MSG_DEBUG, "P2P: Add operating "
  					   "class %u", o->op_class);
  				reg = &chan->reg_class[cla];
  				cla++;
  				reg->reg_class = o->op_class;
  			}
  			reg->channel[reg->channels] = ch;
  			reg->channels++;
  		}
  		if (reg) {
  			wpa_hexdump(MSG_DEBUG, "P2P: Channels",
  				    reg->channel, reg->channels);
  		}
  	}
  
  	chan->reg_classes = cla;
  
  	return 0;
  }
  
  
  int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
  			   struct hostapd_hw_modes *mode, u8 channel)
  {
  	int op, ret;
  
  	for (op = 0; op_class[op].op_class; op++) {
  		struct p2p_oper_class_map *o = &op_class[op];
  		u8 ch;
  
  		for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
  			if (o->mode != HOSTAPD_MODE_IEEE80211A ||
  			    o->bw == BW20 || ch != channel)
  				continue;
  			ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
  			if (ret < 0)
  				continue;
  			else if (ret > 0)
  				return (o->bw == BW40MINUS) ? -1 : 1;
  			else
  				return 0;
  		}
  	}
  	return 0;
  }
  
  
  static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
  			size_t buf_len)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  
  	for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
  		if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
  			break;
  	}
  	if (wpa_s == NULL)
  		return -1;
  
  	return wpa_drv_get_noa(wpa_s, buf, buf_len);
  }
  
  
  static int wpas_go_connected(void *ctx, const u8 *dev_addr)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  
  	for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
  		struct wpa_ssid *ssid = wpa_s->current_ssid;
  		if (ssid == NULL)
  			continue;
  		if (ssid->mode != WPAS_MODE_INFRA)
  			continue;
  		if (wpa_s->wpa_state != WPA_COMPLETED &&
  		    wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
  			continue;
  		if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
  			return 1;
  	}
  
  	return 0;
  }
  
  
  static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	wpa_msg_global(wpa_s, level, "P2P: %s", msg);
  }
  
  
  int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s)
  {
  	struct wpa_interface iface;
  	struct wpa_supplicant *p2pdev_wpa_s;
  	char ifname[100];
  	char force_name[100];
  	int ret;
  
  	os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
  		    wpa_s->ifname);
  	force_name[0] = '\0';
  	wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
  	ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
  			     force_name, wpa_s->pending_interface_addr, NULL);
  	if (ret < 0) {
  		wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
  		return ret;
  	}
  	os_strlcpy(wpa_s->pending_interface_name, ifname,
  		   sizeof(wpa_s->pending_interface_name));
  
  	os_memset(&iface, 0, sizeof(iface));
  	iface.p2p_mgmt = 1;
  	iface.ifname = wpa_s->pending_interface_name;
  	iface.driver = wpa_s->driver->name;
  	iface.driver_param = wpa_s->conf->driver_param;
  	iface.confname = wpa_s->confname;
  	p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
  	if (!p2pdev_wpa_s) {
  		wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
  		return -1;
  	}
  	p2pdev_wpa_s->parent = wpa_s;
  
  	wpa_s->pending_interface_name[0] = '\0';
  	return 0;
  }
  
  
  /**
   * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
   * @global: Pointer to global data from wpa_supplicant_init()
   * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
   * Returns: 0 on success, -1 on failure
   */
  int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
  {
  	struct p2p_config p2p;
  	unsigned int r;
  	int i;
  
  	if (wpa_s->conf->p2p_disabled)
  		return 0;
  
  	if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
  		return 0;
  
  	if (global->p2p)
  		return 0;
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
  		struct p2p_params params;
  
  		wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
  		os_memset(&params, 0, sizeof(params));
  		params.dev_name = wpa_s->conf->device_name;
  		os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
  			  WPS_DEV_TYPE_LEN);
  		params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
  		os_memcpy(params.sec_dev_type,
  			  wpa_s->conf->sec_device_type,
  			  params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
  
  		if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
  			return -1;
  
  		return 0;
  	}
  
  	os_memset(&p2p, 0, sizeof(p2p));
  	p2p.cb_ctx = wpa_s;
  	p2p.debug_print = wpas_p2p_debug_print;
  	p2p.p2p_scan = wpas_p2p_scan;
  	p2p.send_action = wpas_send_action;
  	p2p.send_action_done = wpas_send_action_done;
  	p2p.go_neg_completed = wpas_go_neg_completed;
  	p2p.go_neg_req_rx = wpas_go_neg_req_rx;
  	p2p.dev_found = wpas_dev_found;
  	p2p.dev_lost = wpas_dev_lost;
  	p2p.find_stopped = wpas_find_stopped;
  	p2p.start_listen = wpas_start_listen;
  	p2p.stop_listen = wpas_stop_listen;
  	p2p.send_probe_resp = wpas_send_probe_resp;
  	p2p.sd_request = wpas_sd_request;
  	p2p.sd_response = wpas_sd_response;
  	p2p.prov_disc_req = wpas_prov_disc_req;
  	p2p.prov_disc_resp = wpas_prov_disc_resp;
  	p2p.prov_disc_fail = wpas_prov_disc_fail;
  	p2p.invitation_process = wpas_invitation_process;
  	p2p.invitation_received = wpas_invitation_received;
  	p2p.invitation_result = wpas_invitation_result;
  	p2p.get_noa = wpas_get_noa;
  	p2p.go_connected = wpas_go_connected;
  
  	os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
  	os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
  	p2p.dev_name = wpa_s->conf->device_name;
  	p2p.manufacturer = wpa_s->conf->manufacturer;
  	p2p.model_name = wpa_s->conf->model_name;
  	p2p.model_number = wpa_s->conf->model_number;
  	p2p.serial_number = wpa_s->conf->serial_number;
  	if (wpa_s->wps) {
  		os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
  		p2p.config_methods = wpa_s->wps->config_methods;
  	}
  
  	if (wpa_s->conf->p2p_listen_reg_class &&
  	    wpa_s->conf->p2p_listen_channel) {
  		p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
  		p2p.channel = wpa_s->conf->p2p_listen_channel;
  	} else {
  		p2p.reg_class = 81;
  		/*
  		 * Pick one of the social channels randomly as the listen
  		 * channel.
  		 */
  		os_get_random((u8 *) &r, sizeof(r));
  		p2p.channel = 1 + (r % 3) * 5;
  	}
  	wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
  
  	if (wpa_s->conf->p2p_oper_reg_class &&
  	    wpa_s->conf->p2p_oper_channel) {
  		p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
  		p2p.op_channel = wpa_s->conf->p2p_oper_channel;
  		p2p.cfg_op_channel = 1;
  		wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
  			   "%d:%d", p2p.op_reg_class, p2p.op_channel);
  
  	} else {
  		p2p.op_reg_class = 81;
  		/*
  		 * Use random operation channel from (1, 6, 11) if no other
  		 * preference is indicated.
  		 */
  		os_get_random((u8 *) &r, sizeof(r));
  		p2p.op_channel = 1 + (r % 3) * 5;
  		p2p.cfg_op_channel = 0;
  		wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
  			   "%d:%d", p2p.op_reg_class, p2p.op_channel);
  	}
  
  	if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
  		p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
  		p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
  	}
  
  	if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
  		os_memcpy(p2p.country, wpa_s->conf->country, 2);
  		p2p.country[2] = 0x04;
  	} else
  		os_memcpy(p2p.country, "XX\x04", 3);
  
  	if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
  		wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
  			   "channel list");
  		return -1;
  	}
  
  	os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
  		  WPS_DEV_TYPE_LEN);
  
  	p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
  	os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
  		  p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
  
  	p2p.concurrent_operations = !!(wpa_s->drv_flags &
  				       WPA_DRIVER_FLAGS_P2P_CONCURRENT);
  
  	p2p.max_peers = 100;
  
  	if (wpa_s->conf->p2p_ssid_postfix) {
  		p2p.ssid_postfix_len =
  			os_strlen(wpa_s->conf->p2p_ssid_postfix);
  		if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
  			p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
  		os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
  			  p2p.ssid_postfix_len);
  	}
  
  	p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
  
  	p2p.max_listen = wpa_s->max_remain_on_chan;
  
  	global->p2p = p2p_init(&p2p);
  	if (global->p2p == NULL)
  		return -1;
  	global->p2p_init_wpa_s = wpa_s;
  
  	for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
  		if (wpa_s->conf->wps_vendor_ext[i] == NULL)
  			continue;
  		p2p_add_wps_vendor_extension(
  			global->p2p, wpa_s->conf->wps_vendor_ext[i]);
  	}
  
  	return 0;
  }
  
  
  /**
   * wpas_p2p_deinit - Deinitialize per-interface P2P data
   * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
   *
   * This function deinitialize per-interface P2P data.
   */
  void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
  {
  	if (wpa_s->driver && wpa_s->drv_priv)
  		wpa_drv_probe_req_report(wpa_s, 0);
  
  	if (wpa_s->go_params) {
  		/* Clear any stored provisioning info */
  		p2p_clear_provisioning_info(
  			wpa_s->global->p2p,
  			wpa_s->go_params->peer_device_addr);
  	}
  
  	os_free(wpa_s->go_params);
  	wpa_s->go_params = NULL;
  #ifdef ANDROID_P2P
  	eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
  #endif
  	eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
  	eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
  	wpa_s->p2p_long_listen = 0;
  	eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
  	eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
  	wpas_p2p_remove_pending_group_interface(wpa_s);
  
  	/* TODO: remove group interface from the driver if this wpa_s instance
  	 * is on top of a P2P group interface */
  }
  
  
  /**
   * wpas_p2p_deinit_global - Deinitialize global P2P module
   * @global: Pointer to global data from wpa_supplicant_init()
   *
   * This function deinitializes the global (per device) P2P module.
   */
  void wpas_p2p_deinit_global(struct wpa_global *global)
  {
  	struct wpa_supplicant *wpa_s, *tmp;
  
  	wpa_s = global->ifaces;
  	if (wpa_s)
  		wpas_p2p_service_flush(wpa_s);
  
  	if (global->p2p == NULL)
  		return;
  
  	/* Remove remaining P2P group interfaces */
  	while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
  		wpa_s = wpa_s->next;
  	while (wpa_s) {
  		tmp = global->ifaces;
  		while (tmp &&
  		       (tmp == wpa_s ||
  			tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
  			tmp = tmp->next;
  		}
  		if (tmp == NULL)
  			break;
  		/* Disconnect from the P2P group and deinit the interface */
  		wpas_p2p_disconnect(tmp);
  	}
  
  	/*
  	 * Deinit GO data on any possibly remaining interface (if main
  	 * interface is used as GO).
  	 */
  	for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
  		if (wpa_s->ap_iface)
  			wpas_p2p_group_deinit(wpa_s);
  	}
  
  	p2p_deinit(global->p2p);
  	global->p2p = NULL;
  	global->p2p_init_wpa_s = NULL;
  }
  
  
  static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
  {
  	if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
  	    wpa_s->conf->p2p_no_group_iface)
  		return 0; /* separate interface disabled per configuration */
  	if (wpa_s->drv_flags &
  	    (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
  	     WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
  		return 1; /* P2P group requires a new interface in every case
  			   */
  	if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
  		return 0; /* driver does not support concurrent operations */
  	if (wpa_s->global->ifaces->next)
  		return 1; /* more that one interface already in use */
  	if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
  		return 1; /* this interface is already in use */
  	return 0;
  }
  
  
  static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
  				 const u8 *peer_addr,
  				 enum p2p_wps_method wps_method,
  				 int go_intent, const u8 *own_interface_addr,
  				 unsigned int force_freq, int persistent_group,
  				 struct wpa_ssid *ssid, unsigned int pref_freq)
  {
  	if (persistent_group && wpa_s->conf->persistent_reconnect)
  		persistent_group = 2;
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
  		return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
  					   go_intent, own_interface_addr,
  					   force_freq, persistent_group);
  	}
  
  	/*
  	 * Increase GO config timeout if HT40 is used since it takes some time
  	 * to scan channels for coex purposes before the BSS can be started.
  	 */
  	p2p_set_config_timeout(wpa_s->global->p2p,
  			       wpa_s->p2p_go_ht40 ? 255 : 100, 20);
  
  	return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
  			   go_intent, own_interface_addr, force_freq,
  			   persistent_group, ssid ? ssid->ssid : NULL,
  			   ssid ? ssid->ssid_len : 0,
  			   wpa_s->p2p_pd_before_go_neg, pref_freq);
  }
  
  
  static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
  				const u8 *peer_addr,
  				enum p2p_wps_method wps_method,
  				int go_intent, const u8 *own_interface_addr,
  				unsigned int force_freq, int persistent_group,
  				struct wpa_ssid *ssid, unsigned int pref_freq)
  {
  	if (persistent_group && wpa_s->conf->persistent_reconnect)
  		persistent_group = 2;
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return -1;
  
  	return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
  			     go_intent, own_interface_addr, force_freq,
  			     persistent_group, ssid ? ssid->ssid : NULL,
  			     ssid ? ssid->ssid_len : 0, pref_freq);
  }
  
  
  static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
  {
  	wpa_s->p2p_join_scan_count++;
  	wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
  		   wpa_s->p2p_join_scan_count);
  	if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
  		wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
  			   " for join operationg - stop join attempt",
  			   MAC2STR(wpa_s->pending_join_iface_addr));
  		eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
  		if (wpa_s->p2p_auto_pd) {
  			wpa_s->p2p_auto_pd = 0;
  			wpa_msg_global(wpa_s, MSG_INFO,
  				       P2P_EVENT_PROV_DISC_FAILURE
  				       " p2p_dev_addr=" MACSTR " status=N/A",
  				       MAC2STR(wpa_s->pending_join_dev_addr));
  			return;
  		}
  		wpa_msg_global(wpa_s->parent, MSG_INFO,
  			       P2P_EVENT_GROUP_FORMATION_FAILURE);
  	}
  }
  
  
  static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
  {
  	int *freqs, res, num, i;
  
  	if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
  		/* Multiple channels are supported and not all are in use */
  		return 0;
  	}
  
  	freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
  	if (!freqs)
  		return 1;
  
  	num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
  					wpa_s->num_multichan_concurrent);
  	if (num < 0) {
  		res = 1;
  		goto exit_free;
  	}
  
  	for (i = 0; i < num; i++) {
  		if (freqs[i] == freq) {
  			wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
  				   freq);
  			res = 0;
  			goto exit_free;
  		}
  	}
  
  	res = 1;
  
  exit_free:
  	os_free(freqs);
  	return res;
  }
  
  
  static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
  			    const u8 *peer_dev_addr)
  {
  	struct wpa_bss *bss;
  	int updated;
  
  	bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
  	if (bss == NULL)
  		return -1;
  	if (bss->last_update_idx < wpa_s->bss_update_idx) {
  		wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
  			   "last scan");
  		return 0;
  	}
  
  	updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
  	wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
  		   "%ld.%06ld (%supdated in last scan)",
  		   bss->last_update.sec, bss->last_update.usec,
  		   updated ? "": "not ");
  
  	return updated;
  }
  
  
  static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
  				   struct wpa_scan_results *scan_res)
  {
  	struct wpa_bss *bss;
  	int freq;
  	u8 iface_addr[ETH_ALEN];
  
  	eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
  
  	if (wpa_s->global->p2p_disabled)
  		return;
  
  	wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
  		   scan_res ? (int) scan_res->num : -1,
  		   wpa_s->p2p_auto_join ? "auto_" : "");
  
  	if (scan_res)
  		wpas_p2p_scan_res_handler(wpa_s, scan_res);
  
  	if (wpa_s->p2p_auto_pd) {
  		int join = wpas_p2p_peer_go(wpa_s,
  					    wpa_s->pending_join_dev_addr);
  		if (join == 0 &&
  		    wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
  			wpa_s->auto_pd_scan_retry++;
  			bss = wpa_bss_get_bssid_latest(
  				wpa_s, wpa_s->pending_join_dev_addr);
  			if (bss) {
  				freq = bss->freq;
  				wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
  					   "the peer " MACSTR " at %d MHz",
  					   wpa_s->auto_pd_scan_retry,
  					   MAC2STR(wpa_s->
  						   pending_join_dev_addr),
  					   freq);
  				wpas_p2p_join_scan_req(wpa_s, freq);
  				return;
  			}
  		}
  
  		if (join < 0)
  			join = 0;
  
  		wpa_s->p2p_auto_pd = 0;
  		wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
  		wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
  			   MAC2STR(wpa_s->pending_join_dev_addr), join);
  		if (p2p_prov_disc_req(wpa_s->global->p2p,
  				      wpa_s->pending_join_dev_addr,
  				      wpa_s->pending_pd_config_methods, join,
  				      0, wpa_s->user_initiated_pd) < 0) {
  			wpa_s->p2p_auto_pd = 0;
  			wpa_msg_global(wpa_s, MSG_INFO,
  				       P2P_EVENT_PROV_DISC_FAILURE
  				       " p2p_dev_addr=" MACSTR " status=N/A",
  				       MAC2STR(wpa_s->pending_join_dev_addr));
  		}
  		return;
  	}
  
  	if (wpa_s->p2p_auto_join) {
  		int join = wpas_p2p_peer_go(wpa_s,
  					    wpa_s->pending_join_dev_addr);
  		if (join < 0) {
  			wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
  				   "running a GO -> use GO Negotiation");
  			wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
  					 wpa_s->p2p_pin, wpa_s->p2p_wps_method,
  					 wpa_s->p2p_persistent_group, 0, 0, 0,
  					 wpa_s->p2p_go_intent,
  					 wpa_s->p2p_connect_freq,
  					 wpa_s->p2p_persistent_id,
  					 wpa_s->p2p_pd_before_go_neg,
  					 wpa_s->p2p_go_ht40);
  			return;
  		}
  
  		wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
  			   "try to join the group", join ? "" :
  			   " in older scan");
  		if (!join)
  			wpa_s->p2p_fallback_to_go_neg = 1;
  	}
  
  	freq = p2p_get_oper_freq(wpa_s->global->p2p,
  				 wpa_s->pending_join_iface_addr);
  	if (freq < 0 &&
  	    p2p_get_interface_addr(wpa_s->global->p2p,
  				   wpa_s->pending_join_dev_addr,
  				   iface_addr) == 0 &&
  	    os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
  	{
  		wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
  			   "address for join from " MACSTR " to " MACSTR
  			   " based on newly discovered P2P peer entry",
  			   MAC2STR(wpa_s->pending_join_iface_addr),
  			   MAC2STR(iface_addr));
  		os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
  			  ETH_ALEN);
  
  		freq = p2p_get_oper_freq(wpa_s->global->p2p,
  					 wpa_s->pending_join_iface_addr);
  	}
  	if (freq >= 0) {
  		wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
  			   "from P2P peer table: %d MHz", freq);
  	}
  	bss = wpa_bss_get_bssid_latest(wpa_s, wpa_s->pending_join_iface_addr);
  	if (bss) {
  		freq = bss->freq;
  		wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
  			   "from BSS table: %d MHz", freq);
  	}
  	if (freq > 0) {
  		u16 method;
  
  		if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
  			wpa_msg_global(wpa_s->parent, MSG_INFO,
  				       P2P_EVENT_GROUP_FORMATION_FAILURE
  				       "reason=FREQ_CONFLICT");
  			return;
  		}
  
  		wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
  			   "prior to joining an existing group (GO " MACSTR
  			   " freq=%u MHz)",
  			   MAC2STR(wpa_s->pending_join_dev_addr), freq);
  		wpa_s->pending_pd_before_join = 1;
  
  		switch (wpa_s->pending_join_wps_method) {
  		case WPS_PIN_DISPLAY:
  			method = WPS_CONFIG_KEYPAD;
  			break;
  		case WPS_PIN_KEYPAD:
  			method = WPS_CONFIG_DISPLAY;
  			break;
  		case WPS_PBC:
  			method = WPS_CONFIG_PUSHBUTTON;
  			break;
  		default:
  			method = 0;
  			break;
  		}
  
  		if ((p2p_get_provisioning_info(wpa_s->global->p2p,
  					       wpa_s->pending_join_dev_addr) ==
  		     method)) {
  			/*
  			 * We have already performed provision discovery for
  			 * joining the group. Proceed directly to join
  			 * operation without duplicated provision discovery. */
  			wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
  				   "with " MACSTR " already done - proceed to "
  				   "join",
  				   MAC2STR(wpa_s->pending_join_dev_addr));
  			wpa_s->pending_pd_before_join = 0;
  			goto start;
  		}
  
  		if (p2p_prov_disc_req(wpa_s->global->p2p,
  				      wpa_s->pending_join_dev_addr, method, 1,
  				      freq, wpa_s->user_initiated_pd) < 0) {
  			wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
  				   "Discovery Request before joining an "
  				   "existing group");
  			wpa_s->pending_pd_before_join = 0;
  			goto start;
  		}
  		return;
  	}
  
  	wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
  	eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
  	eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
  	wpas_p2p_check_join_scan_limit(wpa_s);
  	return;
  
  start:
  	/* Start join operation immediately */
  	wpas_p2p_join_start(wpa_s);
  }
  
  
  static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
  {
  	int ret;
  	struct wpa_driver_scan_params params;
  	struct wpabuf *wps_ie, *ies;
  	size_t ielen;
  	int freqs[2] = { 0, 0 };
  #ifdef ANDROID_P2P
  	int oper_freq;
  
  	/* If freq is not provided, check the operating freq of the GO and do a
  	 * a directed scan to save time
  	 */
  	if(!freq) {
  		freq = (oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
  			 wpa_s->pending_join_iface_addr) == -1) ? 0 : oper_freq;
  	}
  #endif
  	os_memset(&params, 0, sizeof(params));
  
  	/* P2P Wildcard SSID */
  	params.num_ssids = 1;
  	params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
  	params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
  
  	wpa_s->wps->dev.p2p = 1;
  	wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
  					wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
  					NULL);
  	if (wps_ie == NULL) {
  		wpas_p2p_scan_res_join(wpa_s, NULL);
  		return;
  	}
  
  	ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
  	ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
  	if (ies == NULL) {
  		wpabuf_free(wps_ie);
  		wpas_p2p_scan_res_join(wpa_s, NULL);
  		return;
  	}
  	wpabuf_put_buf(ies, wps_ie);
  	wpabuf_free(wps_ie);
  
  	p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
  
  	params.p2p_probe = 1;
  	params.extra_ies = wpabuf_head(ies);
  	params.extra_ies_len = wpabuf_len(ies);
  	if (freq > 0) {
  		freqs[0] = freq;
  		params.freqs = freqs;
  	}
  
  	/*
  	 * Run a scan to update BSS table and start Provision Discovery once
  	 * the new scan results become available.
  	 */
  	ret = wpa_drv_scan(wpa_s, &params);
  	if (!ret) {
  		os_get_time(&wpa_s->scan_trigger_time);
  		wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
  	}
  
  	wpabuf_free(ies);
  
  	if (ret) {
  		wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
  			   "try again later");
  		eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
  		eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
  		wpas_p2p_check_join_scan_limit(wpa_s);
  	}
  }
  
  
  static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  	wpas_p2p_join_scan_req(wpa_s, 0);
  }
  
  
  static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  			 const u8 *dev_addr, enum p2p_wps_method wps_method,
  			 int auto_join)
  {
  	wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
  		   MACSTR " dev " MACSTR ")%s",
  		   MAC2STR(iface_addr), MAC2STR(dev_addr),
  		   auto_join ? " (auto_join)" : "");
  
  	wpa_s->p2p_auto_pd = 0;
  	wpa_s->p2p_auto_join = !!auto_join;
  	os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
  	os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
  	wpa_s->pending_join_wps_method = wps_method;
  
  	/* Make sure we are not running find during connection establishment */
  	wpas_p2p_stop_find(wpa_s);
  
  	wpa_s->p2p_join_scan_count = 0;
  	wpas_p2p_join_scan(wpa_s, NULL);
  	return 0;
  }
  
  
  static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
  {
  	struct wpa_supplicant *group;
  	struct p2p_go_neg_results res;
  	struct wpa_bss *bss;
  
  	group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
  	if (group == NULL)
  		return -1;
  	if (group != wpa_s) {
  		os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
  			  sizeof(group->p2p_pin));
  		group->p2p_wps_method = wpa_s->p2p_wps_method;
  	} else {
  		/*
  		 * Need to mark the current interface for p2p_group_formation
  		 * when a separate group interface is not used. This is needed
  		 * to allow p2p_cancel stop a pending p2p_connect-join.
  		 * wpas_p2p_init_group_interface() addresses this for the case
  		 * where a separate group interface is used.
  		 */
  		wpa_s->global->p2p_group_formation = wpa_s;
  	}
  
  	group->p2p_in_provisioning = 1;
  	group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
  
  	os_memset(&res, 0, sizeof(res));
  	os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
  		  ETH_ALEN);
  	res.wps_method = wpa_s->pending_join_wps_method;
  	bss = wpa_bss_get_bssid_latest(wpa_s, wpa_s->pending_join_iface_addr);
  	if (bss) {
  		res.freq = bss->freq;
  		res.ssid_len = bss->ssid_len;
  		os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
  	}
  
  	if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
  		wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
  			   "starting client");
  		wpa_drv_cancel_remain_on_channel(wpa_s);
  		wpa_s->off_channel_freq = 0;
  		wpa_s->roc_waiting_drv_freq = 0;
  	}
  	wpas_start_wps_enrollee(group, &res);
  
  	/*
  	 * Allow a longer timeout for join-a-running-group than normal 15
  	 * second group formation timeout since the GO may not have authorized
  	 * our connection yet.
  	 */
  	eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
  	eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
  			       wpa_s, NULL);
  
  	return 0;
  }
  
  
  static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
  				int *force_freq, int *pref_freq)
  {
  	int *freqs, res;
  	unsigned int freq_in_use = 0, num, i;
  
  	freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
  	if (!freqs)
  		return -1;
  
  	num = get_shared_radio_freqs(wpa_s, freqs,
  				     wpa_s->num_multichan_concurrent);
  	wpa_printf(MSG_DEBUG,
  		   "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u",
  		   freq, wpa_s->num_multichan_concurrent, num);
  
  	if (freq > 0) {
  		if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
  			wpa_printf(MSG_DEBUG, "P2P: The forced channel "
  				   "(%u MHz) is not supported for P2P uses",
  				   freq);
  			res = -3;
  			goto exit_free;
  		}
  
  		for (i = 0; i < num; i++) {
  			if (freqs[i] == freq)
  				freq_in_use = 1;
  		}
  
  		if (num == wpa_s->num_multichan_concurrent && !freq_in_use) {
  			wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
  				   freq);
  			res = -2;
  			goto exit_free;
  		}
  		wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
  			   "requested channel (%u MHz)", freq);
  		*force_freq = freq;
  		goto exit_ok;
  	}
  
  	for (i = 0; i < num; i++) {
  		if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
  			continue;
  
  #ifndef ANDROID_P2P
  		wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
  			   *force_freq);
  		*force_freq = freqs[i];
  #endif
  
  		if (*pref_freq == 0 && num < wpa_s->num_multichan_concurrent) {
  			wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency we are already using");
  			*pref_freq = freqs[i];
  #ifdef ANDROID_P2P
  		} else {
  			wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
  				   *force_freq);
  			*force_freq = freqs[i];
  #endif
  		}
  		break;
  	}
  
  	if (i == num) {
  		if (num < wpa_s->num_multichan_concurrent) {
  			wpa_printf(MSG_DEBUG, "P2P: Current operating channels are not available for P2P. Try to use another channel");
  			*force_freq = 0;
  		} else {
  			wpa_printf(MSG_DEBUG, "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
  			res = -2;
  			goto exit_free;
  		}
  	}
  
  exit_ok:
  	res = 0;
  exit_free:
  	os_free(freqs);
  	return res;
  }
  
  
  /**
   * wpas_p2p_connect - Request P2P Group Formation to be started
   * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
   * @peer_addr: Address of the peer P2P Device
   * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
   * @persistent_group: Whether to create a persistent group
   * @auto_join: Whether to select join vs. GO Negotiation automatically
   * @join: Whether to join an existing group (as a client) instead of starting
   *	Group Owner negotiation; @peer_addr is BSSID in that case
   * @auth: Whether to only authorize the connection instead of doing that and
   *	initiating Group Owner negotiation
   * @go_intent: GO Intent or -1 to use default
   * @freq: Frequency for the group or 0 for auto-selection
   * @persistent_id: Persistent group credentials to use for forcing GO
   *	parameters or -1 to generate new values (SSID/passphrase)
   * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
   *	interoperability workaround when initiating group formation
   * @ht40: Start GO with 40 MHz channel width
   * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
   *	failure, -2 on failure due to channel not currently available,
   *	-3 if forced channel is not supported
   */
  int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
  		     const char *pin, enum p2p_wps_method wps_method,
  		     int persistent_group, int auto_join, int join, int auth,
  		     int go_intent, int freq, int persistent_id, int pd,
  		     int ht40)
  {
  	int force_freq = 0, pref_freq = 0;
  	int ret = 0, res;
  	enum wpa_driver_if_type iftype;
  	const u8 *if_addr;
  	struct wpa_ssid *ssid = NULL;
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return -1;
  
  	if (persistent_id >= 0) {
  		ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
  		if (ssid == NULL || ssid->disabled != 2 ||
  		    ssid->mode != WPAS_MODE_P2P_GO)
  			return -1;
  	}
  
  	os_free(wpa_s->global->add_psk);
  	wpa_s->global->add_psk = NULL;
  
  #ifndef REALTEK_WIFI_VENDOR
  	if (go_intent < 0)
  #endif
  		go_intent = wpa_s->conf->p2p_go_intent;
  
  	if (!auth)
  		wpa_s->p2p_long_listen = 0;
  
  	wpa_s->p2p_wps_method = wps_method;
  	wpa_s->p2p_persistent_group = !!persistent_group;
  	wpa_s->p2p_persistent_id = persistent_id;
  	wpa_s->p2p_go_intent = go_intent;
  	wpa_s->p2p_connect_freq = freq;
  	wpa_s->p2p_fallback_to_go_neg = 0;
  	wpa_s->p2p_pd_before_go_neg = !!pd;
  	wpa_s->p2p_go_ht40 = !!ht40;
  
  	if (pin)
  		os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
  	else if (wps_method == WPS_PIN_DISPLAY) {
  		ret = wps_generate_pin();
  		os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
  			    ret);
  		wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
  			   wpa_s->p2p_pin);
  	} else
  		wpa_s->p2p_pin[0] = '\0';
  
  	if (join || auto_join) {
  		u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
  		if (auth) {
  			wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
  				   "connect a running group from " MACSTR,
  				   MAC2STR(peer_addr));
  			os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
  			return ret;
  		}
  		os_memcpy(dev_addr, peer_addr, ETH_ALEN);
  		if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
  					   iface_addr) < 0) {
  			os_memcpy(iface_addr, peer_addr, ETH_ALEN);
  			p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
  					 dev_addr);
  		}
  		if (auto_join) {
  			os_get_time(&wpa_s->p2p_auto_started);
  			wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
  				   "%ld.%06ld",
  				   wpa_s->p2p_auto_started.sec,
  				   wpa_s->p2p_auto_started.usec);
  		}
  		wpa_s->user_initiated_pd = 1;
  		if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
  				  auto_join) < 0)
  			return -1;
  		return ret;
  	}
  
  	res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq);
  	if (res)
  		return res;
  	wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
  
  	wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
  
  	if (wpa_s->create_p2p_iface) {
  		/* Prepare to add a new interface for the group */
  		iftype = WPA_IF_P2P_GROUP;
  		if (go_intent == 15)
  			iftype = WPA_IF_P2P_GO;
  		if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
  			wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
  				   "interface for the group");
  			return -1;
  		}
  
  		if_addr = wpa_s->pending_interface_addr;
  	} else
  		if_addr = wpa_s->own_addr;
  
  	if (auth) {
  		if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
  					 go_intent, if_addr,
  					 force_freq, persistent_group, ssid,
  					 pref_freq) < 0)
  			return -1;
  		return ret;
  	}
  
  	if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
  				  go_intent, if_addr, force_freq,
  				  persistent_group, ssid, pref_freq) < 0) {
  		if (wpa_s->create_p2p_iface)
  			wpas_p2p_remove_pending_group_interface(wpa_s);
  		return -1;
  	}
  	return ret;
  }
  
  
  /**
   * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
   * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
   * @freq: Frequency of the channel in MHz
   * @duration: Duration of the stay on the channel in milliseconds
   *
   * This callback is called when the driver indicates that it has started the
   * requested remain-on-channel duration.
   */
  void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
  				   unsigned int freq, unsigned int duration)
  {
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return;
  	if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
  		p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
  			      wpa_s->pending_listen_duration);
  		wpa_s->pending_listen_freq = 0;
  	}
  }
  
  
  static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
  				 unsigned int timeout)
  {
  	/* Limit maximum Listen state time based on driver limitation. */
  	if (timeout > wpa_s->max_remain_on_chan)
  		timeout = wpa_s->max_remain_on_chan;
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return wpa_drv_p2p_listen(wpa_s, timeout);
  
  	return p2p_listen(wpa_s->global->p2p, timeout);
  }
  
  
  /**
   * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
   * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
   * @freq: Frequency of the channel in MHz
   *
   * This callback is called when the driver indicates that a remain-on-channel
   * operation has been completed, i.e., the duration on the requested channel
   * has timed out.
   */
  void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
  					  unsigned int freq)
  {
  	wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
  		   "(p2p_long_listen=%d ms pending_action_tx=%p)",
  		   wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return;
  	if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
  		return; /* P2P module started a new operation */
  	if (offchannel_pending_action_tx(wpa_s))
  		return;
  	if (wpa_s->p2p_long_listen > 0)
  		wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
  	if (wpa_s->p2p_long_listen > 0) {
  		wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
  		wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
  	} else {
  		/*
  		 * When listen duration is over, stop listen & update p2p_state
  		 * to IDLE.
  		 */
  		p2p_stop_listen(wpa_s->global->p2p);
  	}
  }
  
  
  /**
   * wpas_p2p_group_remove - Remove a P2P group
   * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
   * @ifname: Network interface name of the group interface or "*" to remove all
   *	groups
   * Returns: 0 on success, -1 on failure
   *
   * This function is used to remove a P2P group. This can be used to disconnect
   * from a group in which the local end is a P2P Client or to end a P2P Group in
   * case the local end is the Group Owner. If a virtual network interface was
   * created for this group, that interface will be removed. Otherwise, only the
   * configured P2P group network will be removed from the interface.
   */
  int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
  {
  	struct wpa_global *global = wpa_s->global;
  
  	if (os_strcmp(ifname, "*") == 0) {
  		struct wpa_supplicant *prev;
  		wpa_s = global->ifaces;
  		while (wpa_s) {
  			prev = wpa_s;
  			wpa_s = wpa_s->next;
  			if (prev->p2p_group_interface !=
  			    NOT_P2P_GROUP_INTERFACE ||
  			    (prev->current_ssid &&
  			     prev->current_ssid->p2p_group))
  				wpas_p2p_disconnect(prev);
  		}
  		return 0;
  	}
  
  	for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
  		if (os_strcmp(wpa_s->ifname, ifname) == 0)
  			break;
  	}
  
  	return wpas_p2p_disconnect(wpa_s);
  }
  
  
  static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
  {
  	unsigned int r;
  
  	if (freq == 2) {
  		wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
  			   "band");
  		if (wpa_s->best_24_freq > 0 &&
  		    p2p_supported_freq(wpa_s->global->p2p,
  				       wpa_s->best_24_freq)) {
  			freq = wpa_s->best_24_freq;
  			wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
  				   "channel: %d MHz", freq);
  		} else {
  			os_get_random((u8 *) &r, sizeof(r));
  			freq = 2412 + (r % 3) * 25;
  			wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
  				   "channel: %d MHz", freq);
  		}
  	}
  
  	if (freq == 5) {
  		wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
  			   "band");
  		if (wpa_s->best_5_freq > 0 &&
  		    p2p_supported_freq(wpa_s->global->p2p,
  				       wpa_s->best_5_freq)) {
  			freq = wpa_s->best_5_freq;
  			wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
  				   "channel: %d MHz", freq);
  		} else {
  			os_get_random((u8 *) &r, sizeof(r));
  			freq = 5180 + (r % 4) * 20;
  			if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
  				wpa_printf(MSG_DEBUG, "P2P: Could not select "
  					   "5 GHz channel for P2P group");
  				return -1;
  			}
  			wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
  				   "channel: %d MHz", freq);
  		}
  	}
  
  	if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
  		wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
  			   "(%u MHz) is not supported for P2P uses",
  			   freq);
  		return -1;
  	}
  
  	return freq;
  }
  
  
  static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
  				   struct p2p_go_neg_results *params,
  				   int freq, int ht40,
  				   const struct p2p_channels *channels)
  {
  	int res, *freqs;
  	unsigned int pref_freq;
  	unsigned int num, i;
  
  	os_memset(params, 0, sizeof(*params));
  	params->role_go = 1;
  	params->ht40 = ht40;
  	if (freq) {
  		if (!freq_included(channels, freq)) {
  			wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
  				   "accepted", freq);
  			return -1;
  		}
  		wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
  			   "frequency %d MHz", freq);
  		params->freq = freq;
  	} else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
  		   wpa_s->conf->p2p_oper_channel >= 1 &&
  		   wpa_s->conf->p2p_oper_channel <= 11 &&
  		   freq_included(channels,
  				 2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
  		params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
  		wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
  			   "frequency %d MHz", params->freq);
  	} else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
  		    wpa_s->conf->p2p_oper_reg_class == 116 ||
  		    wpa_s->conf->p2p_oper_reg_class == 117 ||
  		    wpa_s->conf->p2p_oper_reg_class == 124 ||
  		    wpa_s->conf->p2p_oper_reg_class == 126 ||
  		    wpa_s->conf->p2p_oper_reg_class == 127) &&
  		   freq_included(channels,
  				 5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
  		params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
  		wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
  			   "frequency %d MHz", params->freq);
  	} else if (wpa_s->conf->p2p_oper_channel == 0 &&
  		   wpa_s->best_overall_freq > 0 &&
  		   p2p_supported_freq(wpa_s->global->p2p,
  				      wpa_s->best_overall_freq) &&
  		   freq_included(channels, wpa_s->best_overall_freq)) {
  		params->freq = wpa_s->best_overall_freq;
  		wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
  			   "channel %d MHz", params->freq);
  	} else if (wpa_s->conf->p2p_oper_channel == 0 &&
  		   wpa_s->best_24_freq > 0 &&
  		   p2p_supported_freq(wpa_s->global->p2p,
  				      wpa_s->best_24_freq) &&
  		   freq_included(channels, wpa_s->best_24_freq)) {
  		params->freq = wpa_s->best_24_freq;
  		wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
  			   "channel %d MHz", params->freq);
  	} else if (wpa_s->conf->p2p_oper_channel == 0 &&
  		   wpa_s->best_5_freq > 0 &&
  		   p2p_supported_freq(wpa_s->global->p2p,
  				      wpa_s->best_5_freq) &&
  		   freq_included(channels, wpa_s->best_5_freq)) {
  		params->freq = wpa_s->best_5_freq;
  		wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
  			   "channel %d MHz", params->freq);
  	} else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
  						  channels))) {
  		params->freq = pref_freq;
  		wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
  			   "channels", params->freq);
  	} else {
  		int chan;
  		for (chan = 0; chan < 11; chan++) {
  			params->freq = 2412 + chan * 5;
  			if (!wpas_p2p_disallowed_freq(wpa_s->global,
  						      params->freq) &&
  			    freq_included(channels, params->freq))
  				break;
  		}
  		if (chan == 11) {
  			wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
  				   "allowed");
  			return -1;
  		}
  		wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
  			   "known)", params->freq);
  	}
  
  	freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
  	if (!freqs)
  		return -1;
  
  	res = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
  					wpa_s->num_multichan_concurrent);
  	if (res < 0) {
  		os_free(freqs);
  		return -1;
  	}
  	num = res;
  
  	if (!freq) {
  		for (i = 0; i < num; i++) {
  			if (freq_included(channels, freqs[i])) {
  				wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
  					   freqs[i]);
  				params->freq = freqs[i];
  				break;
  			}
  		}
  
  		if (i == num) {
  			if (num == wpa_s->num_multichan_concurrent) {
  				wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
  				os_free(freqs);
  				return -1;
  			} else {
  				wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
  			}
  		}
  	} else {
  		for (i = 0; i < num; i++) {
  			if (freqs[i] == freq)
  				break;
  		}
  
  		if (i == num) {
  			if (num == wpa_s->num_multichan_concurrent) {
  				wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
  				os_free(freqs);
  				return -1;
  			} else {
  				wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
  			}
  		}
  	}
  	os_free(freqs);
  	return 0;
  }
  
  
  static struct wpa_supplicant *
  wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  			 int go)
  {
  	struct wpa_supplicant *group_wpa_s;
  
  	if (!wpas_p2p_create_iface(wpa_s)) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
  			"operations");
  		return wpa_s;
  	}
  
  	if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
  					 WPA_IF_P2P_CLIENT) < 0) {
  		wpa_msg_global(wpa_s, MSG_ERROR,
  			       "P2P: Failed to add group interface");
  		return NULL;
  	}
  	group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
  	if (group_wpa_s == NULL) {
  		wpa_msg_global(wpa_s, MSG_ERROR,
  			       "P2P: Failed to initialize group interface");
  		wpas_p2p_remove_pending_group_interface(wpa_s);
  		return NULL;
  	}
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
  		group_wpa_s->ifname);
  	return group_wpa_s;
  }
  
  
  /**
   * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
   * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
   * @persistent_group: Whether to create a persistent group
   * @freq: Frequency for the group or 0 to indicate no hardcoding
   * Returns: 0 on success, -1 on failure
   *
   * This function creates a new P2P group with the local end as the Group Owner,
   * i.e., without using Group Owner Negotiation.
   */
  int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
  		       int freq, int ht40)
  {
  	struct p2p_go_neg_results params;
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return -1;
  
  	os_free(wpa_s->global->add_psk);
  	wpa_s->global->add_psk = NULL;
  
  	/* Make sure we are not running find during connection establishment */
  	wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
  	wpas_p2p_stop_find_oper(wpa_s);
  
  	freq = wpas_p2p_select_go_freq(wpa_s, freq);
  	if (freq < 0)
  		return -1;
  
  	if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, NULL))
  		return -1;
  	if (params.freq &&
  	    !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
  		wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
  			   "(%u MHz) is not supported for P2P uses",
  			   params.freq);
  		return -1;
  	}
  	p2p_go_params(wpa_s->global->p2p, &params);
  	params.persistent_group = persistent_group;
  
  	wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
  	if (wpa_s == NULL)
  		return -1;
  	wpas_start_wps_go(wpa_s, &params, 0);
  
  	return 0;
  }
  
  
  static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
  				 struct wpa_ssid *params, int addr_allocated)
  {
  	struct wpa_ssid *ssid;
  
  	wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
  	if (wpa_s == NULL)
  		return -1;
  	wpa_s->p2p_last_4way_hs_fail = NULL;
  
  	wpa_supplicant_ap_deinit(wpa_s);
  
  	ssid = wpa_config_add_network(wpa_s->conf);
  	if (ssid == NULL)
  		return -1;
  	wpa_config_set_network_defaults(ssid);
  	ssid->temporary = 1;
  	ssid->proto = WPA_PROTO_RSN;
  	ssid->pairwise_cipher = WPA_CIPHER_CCMP;
  	ssid->group_cipher = WPA_CIPHER_CCMP;
  	ssid->key_mgmt = WPA_KEY_MGMT_PSK;
  	ssid->ssid = os_malloc(params->ssid_len);
  	if (ssid->ssid == NULL) {
  		wpa_config_remove_network(wpa_s->conf, ssid->id);
  		return -1;
  	}
  	os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
  	ssid->ssid_len = params->ssid_len;
  	ssid->p2p_group = 1;
  	ssid->export_keys = 1;
  	if (params->psk_set) {
  		os_memcpy(ssid->psk, params->psk, 32);
  		ssid->psk_set = 1;
  	}
  	if (params->passphrase)
  		ssid->passphrase = os_strdup(params->passphrase);
  
  	wpa_supplicant_select_network(wpa_s, ssid);
  
  	wpa_s->show_group_started = 1;
  
  	return 0;
  }
  
  
  int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
  				  struct wpa_ssid *ssid, int addr_allocated,
  				  int freq, int ht40,
  				  const struct p2p_channels *channels)
  {
  	struct p2p_go_neg_results params;
  	int go = 0;
  
  	if (ssid->disabled != 2 || ssid->ssid == NULL)
  		return -1;
  
  	if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
  	    go == (ssid->mode == WPAS_MODE_P2P_GO)) {
  		wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
  			   "already running");
  		return 0;
  	}
  
  	os_free(wpa_s->global->add_psk);
  	wpa_s->global->add_psk = NULL;
  
  	/* Make sure we are not running find during connection establishment */
  	wpas_p2p_stop_find_oper(wpa_s);
  
  	wpa_s->p2p_fallback_to_go_neg = 0;
  
  	if (ssid->mode == WPAS_MODE_INFRA)
  		return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
  
  	if (ssid->mode != WPAS_MODE_P2P_GO)
  		return -1;
  
  	freq = wpas_p2p_select_go_freq(wpa_s, freq);
  	if (freq < 0)
  		return -1;
  
  	if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, channels))
  		return -1;
  
  	params.role_go = 1;
  	params.psk_set = ssid->psk_set;
  	if (params.psk_set)
  		os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
  	if (ssid->passphrase) {
  		if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
  			wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
  				   "persistent group");
  			return -1;
  		}
  		os_strlcpy(params.passphrase, ssid->passphrase,
  			   sizeof(params.passphrase));
  	}
  	os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
  	params.ssid_len = ssid->ssid_len;
  	params.persistent_group = 1;
  
  	wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
  	if (wpa_s == NULL)
  		return -1;
  
  	wpas_start_wps_go(wpa_s, &params, 0);
  
  	return 0;
  }
  
  
  static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
  			       struct wpabuf *proberesp_ies)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	if (wpa_s->ap_iface) {
  		struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
  		if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
  			wpabuf_free(beacon_ies);
  			wpabuf_free(proberesp_ies);
  			return;
  		}
  		if (beacon_ies) {
  			wpabuf_free(hapd->p2p_beacon_ie);
  			hapd->p2p_beacon_ie = beacon_ies;
  		}
  		wpabuf_free(hapd->p2p_probe_resp_ie);
  		hapd->p2p_probe_resp_ie = proberesp_ies;
  	} else {
  		wpabuf_free(beacon_ies);
  		wpabuf_free(proberesp_ies);
  	}
  	wpa_supplicant_ap_update_beacon(wpa_s);
  }
  
  
  static void wpas_p2p_idle_update(void *ctx, int idle)
  {
  	struct wpa_supplicant *wpa_s = ctx;
  	if (!wpa_s->ap_iface)
  		return;
  	wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
  	if (idle)
  		wpas_p2p_set_group_idle_timeout(wpa_s);
  	else
  		eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
  }
  
  
  struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
  				       struct wpa_ssid *ssid)
  {
  	struct p2p_group *group;
  	struct p2p_group_config *cfg;
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return NULL;
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return NULL;
  
  	cfg = os_zalloc(sizeof(*cfg));
  	if (cfg == NULL)
  		return NULL;
  
  	if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
  		cfg->persistent_group = 2;
  	else if (ssid->p2p_persistent_group)
  		cfg->persistent_group = 1;
  	os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
  	if (wpa_s->max_stations &&
  	    wpa_s->max_stations < wpa_s->conf->max_num_sta)
  		cfg->max_clients = wpa_s->max_stations;
  	else
  		cfg->max_clients = wpa_s->conf->max_num_sta;
  	os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
  	cfg->ssid_len = ssid->ssid_len;
  	cfg->cb_ctx = wpa_s;
  	cfg->ie_update = wpas_p2p_ie_update;
  	cfg->idle_update = wpas_p2p_idle_update;
  
  	group = p2p_group_init(wpa_s->global->p2p, cfg);
  	if (group == NULL)
  		os_free(cfg);
  	if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
  		p2p_group_notif_formation_done(group);
  	wpa_s->p2p_group = group;
  	return group;
  }
  
  
  void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
  			  int registrar)
  {
  	struct wpa_ssid *ssid = wpa_s->current_ssid;
  
  	if (!wpa_s->p2p_in_provisioning) {
  		wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
  			   "provisioning not in progress");
  		return;
  	}
  
  	if (ssid && ssid->mode == WPAS_MODE_INFRA) {
  		u8 go_dev_addr[ETH_ALEN];
  		os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
  		wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
  					  ssid->ssid_len);
  		/* Clear any stored provisioning info */
  		p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
  	}
  
  	eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
  			     NULL);
  	if (ssid && ssid->mode == WPAS_MODE_INFRA) {
  		/*
  		 * Use a separate timeout for initial data connection to
  		 * complete to allow the group to be removed automatically if
  		 * something goes wrong in this step before the P2P group idle
  		 * timeout mechanism is taken into use.
  		 */
  		eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
  				       wpas_p2p_group_formation_timeout,
  				       wpa_s->parent, NULL);
  	}
  	if (wpa_s->global->p2p)
  		p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
  	else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		wpa_drv_wps_success_cb(wpa_s, peer_addr);
  	wpas_group_formation_completed(wpa_s, 1);
  }
  
  
  void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
  			 struct wps_event_fail *fail)
  {
  	if (!wpa_s->p2p_in_provisioning) {
  		wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
  			   "provisioning not in progress");
  		return;
  	}
  
  	if (wpa_s->go_params) {
  		p2p_clear_provisioning_info(
  			wpa_s->global->p2p,
  			wpa_s->go_params->peer_device_addr);
  	}
  
  	wpas_notify_p2p_wps_failed(wpa_s, fail);
  }
  
  
  int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
  		       const char *config_method,
  		       enum wpas_p2p_prov_disc_use use)
  {
  	u16 config_methods;
  
  	wpa_s->p2p_fallback_to_go_neg = 0;
  	wpa_s->pending_pd_use = NORMAL_PD;
  	if (os_strncmp(config_method, "display", 7) == 0)
  		config_methods = WPS_CONFIG_DISPLAY;
  	else if (os_strncmp(config_method, "keypad", 6) == 0)
  		config_methods = WPS_CONFIG_KEYPAD;
  	else if (os_strncmp(config_method, "pbc", 3) == 0 ||
  		 os_strncmp(config_method, "pushbutton", 10) == 0)
  		config_methods = WPS_CONFIG_PUSHBUTTON;
  	else {
  		wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
  		return -1;
  	}
  
  	if (use == WPAS_P2P_PD_AUTO) {
  		os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
  		wpa_s->pending_pd_config_methods = config_methods;
  		wpa_s->p2p_auto_pd = 1;
  		wpa_s->p2p_auto_join = 0;
  		wpa_s->pending_pd_before_join = 0;
  		wpa_s->auto_pd_scan_retry = 0;
  		wpas_p2p_stop_find(wpa_s);
  		wpa_s->p2p_join_scan_count = 0;
  		os_get_time(&wpa_s->p2p_auto_started);
  		wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
  			   wpa_s->p2p_auto_started.sec,
  			   wpa_s->p2p_auto_started.usec);
  		wpas_p2p_join_scan(wpa_s, NULL);
  		return 0;
  	}
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
  		return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
  						 config_methods,
  						 use == WPAS_P2P_PD_FOR_JOIN);
  	}
  
  	if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
  		return -1;
  
  	return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
  				 config_methods, use == WPAS_P2P_PD_FOR_JOIN,
  				 0, 1);
  }
  
  
  int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
  			      char *end)
  {
  	return p2p_scan_result_text(ies, ies_len, buf, end);
  }
  
  
  static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
  {
  	if (!offchannel_pending_action_tx(wpa_s))
  		return;
  
  	wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
  		   "operation request");
  	offchannel_clear_pending_action_tx(wpa_s);
  }
  
  
  int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
  		  enum p2p_discovery_type type,
  		  unsigned int num_req_dev_types, const u8 *req_dev_types,
  		  const u8 *dev_id, unsigned int search_delay)
  {
  	wpas_p2p_clear_pending_action_tx(wpa_s);
  	wpa_s->p2p_long_listen = 0;
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return wpa_drv_p2p_find(wpa_s, timeout, type);
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
  	    wpa_s->p2p_in_provisioning)
  		return -1;
  
  	wpa_supplicant_cancel_sched_scan(wpa_s);
  
  	return p2p_find(wpa_s->global->p2p, timeout, type,
  			num_req_dev_types, req_dev_types, dev_id,
  			search_delay);
  }
  
  
  static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
  {
  	wpas_p2p_clear_pending_action_tx(wpa_s);
  	wpa_s->p2p_long_listen = 0;
  	eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
  	eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
  	wpa_s->global->p2p_cb_on_scan_complete = 0;
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
  		wpa_drv_p2p_stop_find(wpa_s);
  		return 1;
  	}
  
  	if (wpa_s->global->p2p)
  		p2p_stop_find(wpa_s->global->p2p);
  
  	return 0;
  }
  
  
  void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
  {
  	if (wpas_p2p_stop_find_oper(wpa_s) > 0)
  		return;
  	wpas_p2p_remove_pending_group_interface(wpa_s);
  }
  
  
  static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  	wpa_s->p2p_long_listen = 0;
  }
  
  
  int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
  {
  	int res;
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return -1;
  
  	wpa_supplicant_cancel_sched_scan(wpa_s);
  	wpas_p2p_clear_pending_action_tx(wpa_s);
  
  	if (timeout == 0) {
  		/*
  		 * This is a request for unlimited Listen state. However, at
  		 * least for now, this is mapped to a Listen state for one
  		 * hour.
  		 */
  		timeout = 3600;
  	}
  	eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
  	wpa_s->p2p_long_listen = 0;
  
  	/*
  	 * Stop previous find/listen operation to avoid trying to request a new
  	 * remain-on-channel operation while the driver is still running the
  	 * previous one.
  	 */
  	if (wpa_s->global->p2p)
  		p2p_stop_find(wpa_s->global->p2p);
  
  	res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
  	if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
  		wpa_s->p2p_long_listen = timeout * 1000;
  		eloop_register_timeout(timeout, 0,
  				       wpas_p2p_long_listen_timeout,
  				       wpa_s, NULL);
  	}
  
  	return res;
  }
  
  
  int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
  			  u8 *buf, size_t len, int p2p_group)
  {
  	struct wpabuf *p2p_ie;
  	int ret;
  
  	if (wpa_s->global->p2p_disabled)
  		return -1;
  	if (wpa_s->global->p2p == NULL)
  		return -1;
  	if (bss == NULL)
  		return -1;
  
  	p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
  	ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
  			       p2p_group, p2p_ie);
  	wpabuf_free(p2p_ie);
  
  	return ret;
  }
  
  
  int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
  			  const u8 *dst, const u8 *bssid,
  			  const u8 *ie, size_t ie_len, int ssi_signal)
  {
  	if (wpa_s->global->p2p_disabled)
  		return 0;
  	if (wpa_s->global->p2p == NULL)
  		return 0;
  
  	switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
  				 ie, ie_len)) {
  	case P2P_PREQ_NOT_P2P:
  		wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
  				 ssi_signal);
  		/* fall through */
  	case P2P_PREQ_MALFORMED:
  	case P2P_PREQ_NOT_LISTEN:
  	case P2P_PREQ_NOT_PROCESSED:
  	default: /* make gcc happy */
  		return 0;
  	case P2P_PREQ_PROCESSED:
  		return 1;
  	}
  }
  
  
  void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
  			const u8 *sa, const u8 *bssid,
  			u8 category, const u8 *data, size_t len, int freq)
  {
  	if (wpa_s->global->p2p_disabled)
  		return;
  	if (wpa_s->global->p2p == NULL)
  		return;
  
  	p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
  		      freq);
  }
  
  
  void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
  {
  	if (wpa_s->global->p2p_disabled)
  		return;
  	if (wpa_s->global->p2p == NULL)
  		return;
  
  	p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
  }
  
  
  void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
  {
  	p2p_group_deinit(wpa_s->p2p_group);
  	wpa_s->p2p_group = NULL;
  
  	wpa_s->ap_configured_cb = NULL;
  	wpa_s->ap_configured_cb_ctx = NULL;
  	wpa_s->ap_configured_cb_data = NULL;
  	wpa_s->connect_without_scan = NULL;
  }
  
  
  int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
  {
  	wpa_s->p2p_long_listen = 0;
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return wpa_drv_p2p_reject(wpa_s, addr);
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return -1;
  
  	return p2p_reject(wpa_s->global->p2p, addr);
  }
  
  
  /* Invite to reinvoke a persistent group */
  int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
  		    struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
  		    int ht40, int pref_freq)
  {
  	enum p2p_invite_role role;
  	u8 *bssid = NULL;
  	int force_freq = 0;
  	int res;
  
  	wpa_s->global->p2p_invite_group = NULL;
  	if (peer_addr)
  		os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
  	else
  		os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
  
  	wpa_s->p2p_persistent_go_freq = freq;
  	wpa_s->p2p_go_ht40 = !!ht40;
  	if (ssid->mode == WPAS_MODE_P2P_GO) {
  		role = P2P_INVITE_ROLE_GO;
  		if (peer_addr == NULL) {
  			wpa_printf(MSG_DEBUG, "P2P: Missing peer "
  				   "address in invitation command");
  			return -1;
  		}
  		if (wpas_p2p_create_iface(wpa_s)) {
  			if (wpas_p2p_add_group_interface(wpa_s,
  							 WPA_IF_P2P_GO) < 0) {
  				wpa_printf(MSG_ERROR, "P2P: Failed to "
  					   "allocate a new interface for the "
  					   "group");
  				return -1;
  			}
  			bssid = wpa_s->pending_interface_addr;
  		} else
  			bssid = wpa_s->own_addr;
  	} else {
  		role = P2P_INVITE_ROLE_CLIENT;
  		peer_addr = ssid->bssid;
  	}
  	wpa_s->pending_invite_ssid_id = ssid->id;
  
  	res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq);
  	if (res)
  		return res;
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
  					  ssid->ssid, ssid->ssid_len,
  					  go_dev_addr, 1);
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return -1;
  
  	return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
  			  ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
  			  1, pref_freq);
  }
  
  
  /* Invite to join an active group */
  int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
  			  const u8 *peer_addr, const u8 *go_dev_addr)
  {
  	struct wpa_global *global = wpa_s->global;
  	enum p2p_invite_role role;
  	u8 *bssid = NULL;
  	struct wpa_ssid *ssid;
  	int persistent;
  	int force_freq = 0, pref_freq = 0;
  	int res;
  
  	wpa_s->p2p_persistent_go_freq = 0;
  	wpa_s->p2p_go_ht40 = 0;
  
  	for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
  		if (os_strcmp(wpa_s->ifname, ifname) == 0)
  			break;
  	}
  	if (wpa_s == NULL) {
  		wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
  		return -1;
  	}
  
  	ssid = wpa_s->current_ssid;
  	if (ssid == NULL) {
  		wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
  			   "invitation");
  		return -1;
  	}
  
  	wpa_s->global->p2p_invite_group = wpa_s;
  	persistent = ssid->p2p_persistent_group &&
  		wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
  					ssid->ssid, ssid->ssid_len);
  
  	if (ssid->mode == WPAS_MODE_P2P_GO) {
  		role = P2P_INVITE_ROLE_ACTIVE_GO;
  		bssid = wpa_s->own_addr;
  		if (go_dev_addr == NULL)
  			go_dev_addr = wpa_s->global->p2p_dev_addr;
  	} else {
  		role = P2P_INVITE_ROLE_CLIENT;
  		if (wpa_s->wpa_state < WPA_ASSOCIATED) {
  			wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
  				   "invite to current group");
  			return -1;
  		}
  		bssid = wpa_s->bssid;
  		if (go_dev_addr == NULL &&
  		    !is_zero_ether_addr(wpa_s->go_dev_addr))
  			go_dev_addr = wpa_s->go_dev_addr;
  	}
  	wpa_s->parent->pending_invite_ssid_id = -1;
  
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
  					  ssid->ssid, ssid->ssid_len,
  					  go_dev_addr, persistent);
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return -1;
  
  	res = wpas_p2p_setup_freqs(wpa_s, 0, &force_freq, &pref_freq);
  	if (res)
  		return res;
  	wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
  
  	return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
  			  ssid->ssid, ssid->ssid_len, force_freq,
  			  go_dev_addr, persistent, pref_freq);
  }
  
  
  void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
  {
  	struct wpa_ssid *ssid = wpa_s->current_ssid;
  	const char *ssid_txt;
  	u8 go_dev_addr[ETH_ALEN];
  	int network_id = -1;
  	int persistent;
  	int freq;
  
  	if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
  		eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
  				     wpa_s->parent, NULL);
  	}
  
  	if (!wpa_s->show_group_started || !ssid)
  		goto done;
  
  	wpa_s->show_group_started = 0;
  
  	ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
  	os_memset(go_dev_addr, 0, ETH_ALEN);
  	if (ssid->bssid_set)
  		os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
  	persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
  					       ssid->ssid_len);
  	os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
  
  	if (wpa_s->global->p2p_group_formation == wpa_s)
  		wpa_s->global->p2p_group_formation = NULL;
  
  	freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
  		(int) wpa_s->assoc_freq;
  	if (ssid->passphrase == NULL && ssid->psk_set) {
  		char psk[65];
  		wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
  		wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
  			       "%s client ssid=\"%s\" freq=%d psk=%s "
  			       "go_dev_addr=" MACSTR "%s",
  			       wpa_s->ifname, ssid_txt, freq, psk,
  			       MAC2STR(go_dev_addr),
  			       persistent ? " [PERSISTENT]" : "");
  	} else {
  		wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
  			       "%s client ssid=\"%s\" freq=%d "
  			       "passphrase=\"%s\" go_dev_addr=" MACSTR "%s",
  			       wpa_s->ifname, ssid_txt, freq,
  			       ssid->passphrase ? ssid->passphrase : "",
  			       MAC2STR(go_dev_addr),
  			       persistent ? " [PERSISTENT]" : "");
  	}
  
  	if (persistent)
  		network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
  							     ssid, go_dev_addr);
  	if (network_id < 0)
  		network_id = ssid->id;
  	wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
  
  done:
  	wpas_p2p_continue_after_scan(wpa_s);
  }
  
  
  int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
  			  u32 interval1, u32 duration2, u32 interval2)
  {
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return -1;
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return -1;
  
  	if (wpa_s->wpa_state < WPA_ASSOCIATED ||
  	    wpa_s->current_ssid == NULL ||
  	    wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
  		return -1;
  
  	return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
  				wpa_s->own_addr, wpa_s->assoc_freq,
  				duration1, interval1, duration2, interval2);
  }
  
  
  int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
  			unsigned int interval)
  {
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return -1;
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return -1;
  
  	return p2p_ext_listen(wpa_s->global->p2p, period, interval);
  }
  
  
  static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
  {
  	if (wpa_s->current_ssid == NULL) {
  		/*
  		 * current_ssid can be cleared when P2P client interface gets
  		 * disconnected, so assume this interface was used as P2P
  		 * client.
  		 */
  		return 1;
  	}
  	return wpa_s->current_ssid->p2p_group &&
  		wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
  }
  
  
  static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  
  	if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
  		wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
  			   "disabled");
  		return;
  	}
  
  	wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
  		   "group");
  	wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
  }
  
  
  static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
  {
  	int timeout;
  
  	if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
  		wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
  
  	if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
  		return;
  
  	timeout = wpa_s->conf->p2p_group_idle;
  	if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
  	    (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
  	    timeout = P2P_MAX_CLIENT_IDLE;
  
  	if (timeout == 0)
  		return;
  
  	if (timeout < 0) {
  		if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
  			timeout = 0; /* special client mode no-timeout */
  		else
  			return;
  	}
  
  	if (wpa_s->p2p_in_provisioning) {
  		/*
  		 * Use the normal group formation timeout during the
  		 * provisioning phase to avoid terminating this process too
  		 * early due to group idle timeout.
  		 */
  		wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
  			   "during provisioning");
  		return;
  	}
  
  #ifdef REALTEK_WIFI_VENDOR
  
  	timeout = P2P_MAX_CLIENT_IDLE;
  
  	if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
  	{
  		if (wpa_s->show_group_started) {
  			wpa_printf(MSG_INFO, "P2P: set P2P group idle timeout to 20s "
  			   "while waiting for initial 4-way handshake to "
  			   "complete");
  
  			timeout = P2P_MAX_CLIENT_IDLE;
  		}
  		else
  		{
  			timeout = 0;
  		}
  	}
  
  #else //REALTEK_WIFI_VENDOR
  #ifndef ANDROID_P2P
  	if (wpa_s->show_group_started) {
  		/*
  		 * Use the normal group formation timeout between the end of
  		 * the provisioning phase and completion of 4-way handshake to
  		 * avoid terminating this process too early due to group idle
  		 * timeout.
  		 */
  		wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
  			   "while waiting for initial 4-way handshake to "
  			   "complete");
  		return;
  	}
  #endif
  #endif // REALTEK_WIFI_VENDOR
  
  	wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
  		   timeout);
  	eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
  			       wpa_s, NULL);
  }
  
  
  /* Returns 1 if the interface was removed */
  int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
  			  u16 reason_code, const u8 *ie, size_t ie_len,
  			  int locally_generated)
  {
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return 0;
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return 0;
  
  	if (!locally_generated)
  		p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
  				 ie_len);
  
  	if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
  	    wpa_s->current_ssid &&
  	    wpa_s->current_ssid->p2p_group &&
  	    wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
  		wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
  			   "session is ending");
  		if (wpas_p2p_group_delete(wpa_s,
  					  P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
  		    > 0)
  			return 1;
  	}
  
  	return 0;
  }
  
  
  void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
  			     u16 reason_code, const u8 *ie, size_t ie_len,
  			     int locally_generated)
  {
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return;
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return;
  
  	if (!locally_generated)
  		p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
  				   ie_len);
  }
  
  
  void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
  {
  	struct p2p_data *p2p = wpa_s->global->p2p;
  
  	if (p2p == NULL)
  		return;
  
  	if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
  		return;
  
  	if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
  		p2p_set_dev_name(p2p, wpa_s->conf->device_name);
  
  	if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
  		p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
  
  	if (wpa_s->wps &&
  	    (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
  		p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
  
  	if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
  		p2p_set_uuid(p2p, wpa_s->wps->uuid);
  
  	if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
  		p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
  		p2p_set_model_name(p2p, wpa_s->conf->model_name);
  		p2p_set_model_number(p2p, wpa_s->conf->model_number);
  		p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
  	}
  
  	if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
  		p2p_set_sec_dev_types(p2p,
  				      (void *) wpa_s->conf->sec_device_type,
  				      wpa_s->conf->num_sec_device_types);
  
  	if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
  		int i;
  		p2p_remove_wps_vendor_extensions(p2p);
  		for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
  			if (wpa_s->conf->wps_vendor_ext[i] == NULL)
  				continue;
  			p2p_add_wps_vendor_extension(
  				p2p, wpa_s->conf->wps_vendor_ext[i]);
  		}
  	}
  
  	if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
  	    wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
  		char country[3];
  		country[0] = wpa_s->conf->country[0];
  		country[1] = wpa_s->conf->country[1];
  		country[2] = 0x04;
  		p2p_set_country(p2p, country);
  	}
  
  	if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
  		p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
  				     wpa_s->conf->p2p_ssid_postfix ?
  				     os_strlen(wpa_s->conf->p2p_ssid_postfix) :
  				     0);
  	}
  
  	if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
  		p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
  
  	if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
  		u8 reg_class, channel;
  		int ret;
  		unsigned int r;
  		if (wpa_s->conf->p2p_listen_reg_class &&
  		    wpa_s->conf->p2p_listen_channel) {
  			reg_class = wpa_s->conf->p2p_listen_reg_class;
  			channel = wpa_s->conf->p2p_listen_channel;
  		} else {
  			reg_class = 81;
  			/*
  			 * Pick one of the social channels randomly as the
  			 * listen channel.
  			 */
  			os_get_random((u8 *) &r, sizeof(r));
  			channel = 1 + (r % 3) * 5;
  		}
  		ret = p2p_set_listen_channel(p2p, reg_class, channel);
  		if (ret)
  			wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
  				   "failed: %d", ret);
  	}
  	if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
  		u8 op_reg_class, op_channel, cfg_op_channel;
  		int ret = 0;
  		unsigned int r;
  		if (wpa_s->conf->p2p_oper_reg_class &&
  		    wpa_s->conf->p2p_oper_channel) {
  			op_reg_class = wpa_s->conf->p2p_oper_reg_class;
  			op_channel = wpa_s->conf->p2p_oper_channel;
  			cfg_op_channel = 1;
  		} else {
  			op_reg_class = 81;
  			/*
  			 * Use random operation channel from (1, 6, 11)
  			 *if no other preference is indicated.
  			 */
  			os_get_random((u8 *) &r, sizeof(r));
  			op_channel = 1 + (r % 3) * 5;
  			cfg_op_channel = 0;
  		}
  		ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
  					   cfg_op_channel);
  		if (ret)
  			wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
  				   "failed: %d", ret);
  	}
  
  	if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
  		if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
  				      wpa_s->conf->p2p_pref_chan) < 0) {
  			wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
  				   "update failed");
  		}
  	}
  }
  
  
  int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
  		     int duration)
  {
  	if (!wpa_s->ap_iface)
  		return -1;
  	return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
  				   duration);
  }
  
  
  int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
  {
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return -1;
  	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
  		return -1;
  
  	wpa_s->global->cross_connection = enabled;
  	p2p_set_cross_connect(wpa_s->global->p2p, enabled);
  
  	if (!enabled) {
  		struct wpa_supplicant *iface;
  
  		for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
  		{
  			if (iface->cross_connect_enabled == 0)
  				continue;
  
  			iface->cross_connect_enabled = 0;
  			iface->cross_connect_in_use = 0;
  			wpa_msg_global(iface->parent, MSG_INFO,
  				       P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
  				       iface->ifname,
  				       iface->cross_connect_uplink);
  		}
  	}
  
  	return 0;
  }
  
  
  static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
  {
  	struct wpa_supplicant *iface;
  
  	if (!uplink->global->cross_connection)
  		return;
  
  	for (iface = uplink->global->ifaces; iface; iface = iface->next) {
  		if (!iface->cross_connect_enabled)
  			continue;
  		if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
  		    0)
  			continue;
  		if (iface->ap_iface == NULL)
  			continue;
  		if (iface->cross_connect_in_use)
  			continue;
  
  		iface->cross_connect_in_use = 1;
  		wpa_msg_global(iface->parent, MSG_INFO,
  			       P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
  			       iface->ifname, iface->cross_connect_uplink);
  	}
  }
  
  
  static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
  {
  	struct wpa_supplicant *iface;
  
  	for (iface = uplink->global->ifaces; iface; iface = iface->next) {
  		if (!iface->cross_connect_enabled)
  			continue;
  		if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
  		    0)
  			continue;
  		if (!iface->cross_connect_in_use)
  			continue;
  
  		wpa_msg_global(iface->parent, MSG_INFO,
  			       P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
  			       iface->ifname, iface->cross_connect_uplink);
  		iface->cross_connect_in_use = 0;
  	}
  }
  
  
  void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
  {
  	if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
  	    wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
  	    wpa_s->cross_connect_disallowed)
  		wpas_p2p_disable_cross_connect(wpa_s);
  	else
  		wpas_p2p_enable_cross_connect(wpa_s);
  	if (!wpa_s->ap_iface &&
  	    eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
  		wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
  }
  
  
  void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
  {
  	wpas_p2p_disable_cross_connect(wpa_s);
  	if (!wpa_s->ap_iface &&
  	    !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
  					 wpa_s, NULL))
  		wpas_p2p_set_group_idle_timeout(wpa_s);
  }
  
  
  static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
  {
  	struct wpa_supplicant *iface;
  
  	if (!wpa_s->global->cross_connection)
  		return;
  
  	for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
  		if (iface == wpa_s)
  			continue;
  		if (iface->drv_flags &
  		    WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
  			continue;
  		if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
  			continue;
  
  		wpa_s->cross_connect_enabled = 1;
  		os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
  			   sizeof(wpa_s->cross_connect_uplink));
  		wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
  			   "%s to %s whenever uplink is available",
  			   wpa_s->ifname, wpa_s->cross_connect_uplink);
  
  		if (iface->ap_iface || iface->current_ssid == NULL ||
  		    iface->current_ssid->mode != WPAS_MODE_INFRA ||
  		    iface->cross_connect_disallowed ||
  		    iface->wpa_state != WPA_COMPLETED)
  			break;
  
  		wpa_s->cross_connect_in_use = 1;
  		wpa_msg_global(wpa_s->parent, MSG_INFO,
  			       P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
  			       wpa_s->ifname, wpa_s->cross_connect_uplink);
  		break;
  	}
  }
  
  
  int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
  {
  	if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
  	    !wpa_s->p2p_in_provisioning)
  		return 0; /* not P2P client operation */
  
  	wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
  		   "session overlap");
  	if (wpa_s != wpa_s->parent)
  		wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
  	wpas_p2p_group_formation_failed(wpa_s);
  	return 1;
  }
  
  
  void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
  {
  	struct p2p_channels chan;
  
  	if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
  		return;
  
  	os_memset(&chan, 0, sizeof(chan));
  	if (wpas_p2p_setup_channels(wpa_s, &chan)) {
  		wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
  			   "channel list");
  		return;
  	}
  
  	p2p_update_channel_list(wpa_s->global->p2p, &chan);
  }
  
  
  static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
  				     struct wpa_scan_results *scan_res)
  {
  	wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
  }
  
  
  int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
  {
  	struct wpa_global *global = wpa_s->global;
  	int found = 0;
  	const u8 *peer;
  
  	if (global->p2p == NULL)
  		return -1;
  
  	wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
  
  	if (wpa_s->pending_interface_name[0] &&
  	    !is_zero_ether_addr(wpa_s->pending_interface_addr))
  		found = 1;
  
  	peer = p2p_get_go_neg_peer(global->p2p);
  	if (peer) {
  		wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
  			   MACSTR, MAC2STR(peer));
  		p2p_unauthorize(global->p2p, peer);
  		found = 1;
  	}
  
  	if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
  		wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
  		wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
  		found = 1;
  	}
  
  	if (wpa_s->pending_pd_before_join) {
  		wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
  		wpa_s->pending_pd_before_join = 0;
  		found = 1;
  	}
  
  	wpas_p2p_stop_find(wpa_s);
  
  	for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
  		if (wpa_s == global->p2p_group_formation &&
  		    (wpa_s->p2p_in_provisioning ||
  		     wpa_s->parent->pending_interface_type ==
  		     WPA_IF_P2P_CLIENT)) {
  			wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
  				   "formation found - cancelling",
  				   wpa_s->ifname);
  			found = 1;
  			eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
  					     wpa_s->parent, NULL);
  			if (wpa_s->p2p_in_provisioning) {
  				wpas_group_formation_completed(wpa_s, 0);
  				break;
  			}
  			wpas_p2p_group_delete(wpa_s,
  					      P2P_GROUP_REMOVAL_REQUESTED);
  			break;
  		}
  	}
  
  	if (!found) {
  		wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
  		return -1;
  	}
  
  	return 0;
  }
  
  
  void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
  {
  	if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
  		return;
  
  	wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
  		   "being available anymore");
  	wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
  }
  
  
  void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
  				   int freq_24, int freq_5, int freq_overall)
  {
  	struct p2p_data *p2p = wpa_s->global->p2p;
  	if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
  		return;
  	p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
  }
  
  
  int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
  {
  	u8 peer[ETH_ALEN];
  	struct p2p_data *p2p = wpa_s->global->p2p;
  
  	if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
  		return -1;
  
  	if (hwaddr_aton(addr, peer))
  		return -1;
  
  	return p2p_unauthorize(p2p, peer);
  }
  
  
  /**
   * wpas_p2p_disconnect - Disconnect from a P2P Group
   * @wpa_s: Pointer to wpa_supplicant data
   * Returns: 0 on success, -1 on failure
   *
   * This can be used to disconnect from a group in which the local end is a P2P
   * Client or to end a P2P Group in case the local end is the Group Owner. If a
   * virtual network interface was created for this group, that interface will be
   * removed. Otherwise, only the configured P2P group network will be removed
   * from the interface.
   */
  int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
  {
  
  	if (wpa_s == NULL)
  		return -1;
  
  	return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
  		-1 : 0;
  }
  
  
  int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
  {
  	int ret;
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return 0;
  
  	ret = p2p_in_progress(wpa_s->global->p2p);
  	if (ret == 0) {
  		/*
  		 * Check whether there is an ongoing WPS provisioning step (or
  		 * other parts of group formation) on another interface since
  		 * p2p_in_progress() does not report this to avoid issues for
  		 * scans during such provisioning step.
  		 */
  		if (wpa_s->global->p2p_group_formation &&
  		    wpa_s->global->p2p_group_formation != wpa_s) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
  				"in group formation",
  				wpa_s->global->p2p_group_formation->ifname);
  			ret = 1;
  		}
  	}
  
  	if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
  		struct os_time now;
  		os_get_time(&now);
  		if (now.sec > wpa_s->global->p2p_go_wait_client.sec +
  		    P2P_MAX_INITIAL_CONN_WAIT_GO) {
  			/* Wait for the first client has expired */
  			wpa_s->global->p2p_go_wait_client.sec = 0;
  		} else {
  			wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
  			ret = 1;
  		}
  	}
  
  	return ret;
  }
  
  
  void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
  			      struct wpa_ssid *ssid)
  {
  	if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
  	    eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
  				 wpa_s->parent, NULL) > 0) {
  		/**
  		 * Remove the network by scheduling the group formation
  		 * timeout to happen immediately. The teardown code
  		 * needs to be scheduled to run asynch later so that we
  		 * don't delete data from under ourselves unexpectedly.
  		 * Calling wpas_p2p_group_formation_timeout directly
  		 * causes a series of crashes in WPS failure scenarios.
  		 */
  		wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
  			   "P2P group network getting removed");
  		eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
  				       wpa_s->parent, NULL);
  	}
  }
  
  
  struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
  					  const u8 *addr, const u8 *ssid,
  					  size_t ssid_len)
  {
  	struct wpa_ssid *s;
  	size_t i;
  
  	for (s = wpa_s->conf->ssid; s; s = s->next) {
  		if (s->disabled != 2)
  			continue;
  		if (ssid &&
  		    (ssid_len != s->ssid_len ||
  		     os_memcmp(ssid, s->ssid, ssid_len) != 0))
  			continue;
  		if (addr == NULL) {
  			if (s->mode == WPAS_MODE_P2P_GO)
  				return s;
  			continue;
  		}
  		if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
  			return s; /* peer is GO in the persistent group */
  		if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
  			continue;
  		for (i = 0; i < s->num_p2p_clients; i++) {
  			if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
  				      addr, ETH_ALEN) == 0)
  				return s; /* peer is P2P client in persistent
  					   * group */
  		}
  	}
  
  	return NULL;
  }
  
  
  void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
  				       const u8 *addr)
  {
  	wpa_s->global->p2p_go_wait_client.sec = 0;
  	if (addr == NULL)
  		return;
  	wpas_p2p_add_persistent_group_client(wpa_s, addr);
  }
  
  
  static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
  					int group_added)
  {
  	struct wpa_supplicant *group = wpa_s;
  	if (wpa_s->global->p2p_group_formation)
  		group = wpa_s->global->p2p_group_formation;
  	wpa_s = wpa_s->parent;
  	offchannel_send_action_done(wpa_s);
  	if (group_added)
  		wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
  	wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
  	wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
  			 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
  			 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
  			 wpa_s->p2p_persistent_id,
  			 wpa_s->p2p_pd_before_go_neg,
  			 wpa_s->p2p_go_ht40);
  }
  
  
  int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
  {
  	if (!wpa_s->p2p_fallback_to_go_neg ||
  	    wpa_s->p2p_in_provisioning <= 5)
  		return 0;
  
  	if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
  		return 0; /* peer operating as a GO */
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
  		"fallback to GO Negotiation");
  	wpas_p2p_fallback_to_go_neg(wpa_s, 1);
  
  	return 1;
  }
  
  
  unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
  {
  	const char *rn, *rn2;
  	struct wpa_supplicant *ifs;
  
  	if (wpa_s->wpa_state > WPA_SCANNING) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
  			"concurrent operation",
  			P2P_CONCURRENT_SEARCH_DELAY);
  		return P2P_CONCURRENT_SEARCH_DELAY;
  	}
  
  	if (!wpa_s->driver->get_radio_name)
  		return 0;
  	rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
  	if (rn == NULL || rn[0] == '\0')
  		return 0;
  
  	for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
  		if (ifs == wpa_s || !ifs->driver->get_radio_name)
  			continue;
  
  		rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
  		if (!rn2 || os_strcmp(rn, rn2) != 0)
  			continue;
  		if (ifs->wpa_state > WPA_SCANNING) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
  				"delay due to concurrent operation on "
  				"interface %s",
  				P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
  			return P2P_CONCURRENT_SEARCH_DELAY;
  		}
  	}
  
  	return 0;
  }
  
  
  void wpas_p2p_continue_after_scan(struct wpa_supplicant *wpa_s)
  {
  	wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Station mode scan operation not "
  		"pending anymore (sta_scan_pending=%d "
  		"p2p_cb_on_scan_complete=%d)", wpa_s->sta_scan_pending,
  		wpa_s->global->p2p_cb_on_scan_complete);
  	wpa_s->sta_scan_pending = 0;
  
  	if (!wpa_s->global->p2p_cb_on_scan_complete)
  		return;
  	wpa_s->global->p2p_cb_on_scan_complete = 0;
  
  	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  		return;
  
  	if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
  			"continued after successful connection");
  		p2p_increase_search_delay(wpa_s->global->p2p,
  					  wpas_p2p_search_delay(wpa_s));
  	}
  }
  
  
  static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
  				     struct wpa_ssid *s, const u8 *addr,
  				     int iface_addr)
  {
  	struct psk_list_entry *psk, *tmp;
  	int changed = 0;
  
  	dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
  			      list) {
  		if ((iface_addr && !psk->p2p &&
  		     os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
  		    (!iface_addr && psk->p2p &&
  		     os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
  			wpa_dbg(wpa_s, MSG_DEBUG,
  				"P2P: Remove persistent group PSK list entry for "
  				MACSTR " p2p=%u",
  				MAC2STR(psk->addr), psk->p2p);
  			dl_list_del(&psk->list);
  			os_free(psk);
  			changed++;
  		}
  	}
  
  	return changed;
  }
  
  
  void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
  			 const u8 *p2p_dev_addr,
  			 const u8 *psk, size_t psk_len)
  {
  	struct wpa_ssid *ssid = wpa_s->current_ssid;
  	struct wpa_ssid *persistent;
  	struct psk_list_entry *p;
  
  	if (psk_len != sizeof(p->psk))
  		return;
  
  	if (p2p_dev_addr) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
  			" p2p_dev_addr=" MACSTR,
  			MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
  		if (is_zero_ether_addr(p2p_dev_addr))
  			p2p_dev_addr = NULL;
  	} else {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
  			MAC2STR(mac_addr));
  	}
  
  	if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
  		/* To be added to persistent group once created */
  		if (wpa_s->global->add_psk == NULL) {
  			wpa_s->global->add_psk = os_zalloc(sizeof(*p));
  			if (wpa_s->global->add_psk == NULL)
  				return;
  		}
  		p = wpa_s->global->add_psk;
  		if (p2p_dev_addr) {
  			p->p2p = 1;
  			os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
  		} else {
  			p->p2p = 0;
  			os_memcpy(p->addr, mac_addr, ETH_ALEN);
  		}
  		os_memcpy(p->psk, psk, psk_len);
  		return;
  	}
  
  	if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
  		return;
  	}
  
  	persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
  					     ssid->ssid_len);
  	if (!persistent) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
  		return;
  	}
  
  	p = os_zalloc(sizeof(*p));
  	if (p == NULL)
  		return;
  	if (p2p_dev_addr) {
  		p->p2p = 1;
  		os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
  	} else {
  		p->p2p = 0;
  		os_memcpy(p->addr, mac_addr, ETH_ALEN);
  	}
  	os_memcpy(p->psk, psk, psk_len);
  
  	if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS) {
  		struct psk_list_entry *last;
  		last = dl_list_last(&persistent->psk_list,
  				    struct psk_list_entry, list);
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
  			MACSTR " (p2p=%u) to make room for a new one",
  			MAC2STR(last->addr), last->p2p);
  		dl_list_del(&last->list);
  		os_free(last);
  	}
  
  	wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
  				  p2p_dev_addr ? p2p_dev_addr : mac_addr,
  				  p2p_dev_addr == NULL);
  	if (p2p_dev_addr) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
  			MACSTR, MAC2STR(p2p_dev_addr));
  	} else {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
  			MAC2STR(mac_addr));
  	}
  	dl_list_add(&persistent->psk_list, &p->list);
  
  #ifndef CONFIG_NO_CONFIG_WRITE
  	if (wpa_s->parent->conf->update_config &&
  	    wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
  		wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
  #endif /* CONFIG_NO_CONFIG_WRITE */
  }
  
  
  static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
  				struct wpa_ssid *s, const u8 *addr,
  				int iface_addr)
  {
  	int res;
  
  	res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
  	if (res > 0) {
  #ifndef CONFIG_NO_CONFIG_WRITE
  		if (wpa_s->conf->update_config &&
  		    wpa_config_write(wpa_s->confname, wpa_s->conf))
  			wpa_dbg(wpa_s, MSG_DEBUG,
  				"P2P: Failed to update configuration");
  #endif /* CONFIG_NO_CONFIG_WRITE */
  	}
  }
  
  
  static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
  				      const u8 *peer, int iface_addr)
  {
  	struct hostapd_data *hapd;
  	struct hostapd_wpa_psk *psk, *prev, *rem;
  	struct sta_info *sta;
  
  	if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
  	    wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
  		return;
  
  	/* Remove per-station PSK entry */
  	hapd = wpa_s->ap_iface->bss[0];
  	prev = NULL;
  	psk = hapd->conf->ssid.wpa_psk;
  	while (psk) {
  		if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
  		    (!iface_addr &&
  		     os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
  				MACSTR " iface_addr=%d",
  				MAC2STR(peer), iface_addr);
  			if (prev)
  				prev->next = psk->next;
  			else
  				hapd->conf->ssid.wpa_psk = psk->next;
  			rem = psk;
  			psk = psk->next;
  			os_free(rem);
  		} else {
  			prev = psk;
  			psk = psk->next;
  		}
  	}
  
  	/* Disconnect from group */
  	if (iface_addr)
  		sta = ap_get_sta(hapd, peer);
  	else
  		sta = ap_get_sta_p2p(hapd, peer);
  	if (sta) {
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
  			" (iface_addr=%d) from group",
  			MAC2STR(peer), iface_addr);
  		hostapd_drv_sta_deauth(hapd, sta->addr,
  				       WLAN_REASON_DEAUTH_LEAVING);
  		ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
  	}
  }
  
  
  void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
  			    int iface_addr)
  {
  	struct wpa_ssid *s;
  	struct wpa_supplicant *w;
  
  	wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
  
  	/* Remove from any persistent group */
  	for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
  		if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
  			continue;
  		if (!iface_addr)
  			wpas_remove_persistent_peer(wpa_s, s, peer, 0);
  		wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
  	}
  
  	/* Remove from any operating group */
  	for (w = wpa_s->global->ifaces; w; w = w->next)
  		wpas_p2p_remove_client_go(w, peer, iface_addr);
  }
  
  
  static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  	wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
  }
  
  
  int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
  {
  	struct wpa_ssid *ssid = wpa_s->current_ssid;
  
  	if (ssid == NULL || !ssid->p2p_group)
  		return 0;
  
  	if (wpa_s->p2p_last_4way_hs_fail &&
  	    wpa_s->p2p_last_4way_hs_fail == ssid) {
  		u8 go_dev_addr[ETH_ALEN];
  		struct wpa_ssid *persistent;
  
  		if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
  					      ssid->ssid,
  					      ssid->ssid_len) <= 0) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
  			goto disconnect;
  		}
  
  		wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
  			MACSTR, MAC2STR(go_dev_addr));
  		persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
  						     ssid->ssid,
  						     ssid->ssid_len);
  		if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
  			wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
  			goto disconnect;
  		}
  		wpa_msg_global(wpa_s->parent, MSG_INFO,
  			       P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
  			       persistent->id);
  	disconnect:
  		wpa_s->p2p_last_4way_hs_fail = NULL;
  		/*
  		 * Remove the group from a timeout to avoid issues with caller
  		 * continuing to use the interface if this is on a P2P group
  		 * interface.
  		 */
  		eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
  				       wpa_s, NULL);
  		return 1;
  	}
  
  	wpa_s->p2p_last_4way_hs_fail = ssid;
  	return 0;
  }
  
  #ifdef ANDROID_P2P
  static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
  {
  	struct wpa_supplicant *wpa_s = eloop_ctx;
  
  	wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
  	wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
  }
  
  int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
  	struct wpa_ssid *ssid)
  {
  	struct wpa_supplicant *iface = NULL;
  	struct p2p_data *p2p = wpa_s->global->p2p;
  
  	for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
  		if ((iface->current_ssid) &&
  		    (iface->current_ssid->frequency != freq) &&
  		    ((iface->p2p_group_interface) ||
  		     (iface->current_ssid->p2p_group))) {
  
  			if ((iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO)  ||
  			    (iface->current_ssid->mode == WPAS_MODE_P2P_GO)) {
  				/* Try to see whether we can move the GO. If it
  				 * is not possible, remove the GO interface
  				 */
  				if (wpa_drv_switch_channel(iface, freq) == 0) {
  					wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq);
  					iface->current_ssid->frequency = freq;
  					continue;
  				}
  			}
  
  			/* If GO cannot be moved or if the conflicting interface is a
  			 * P2P Client, remove the interface depending up on the connection
  			 * priority */
  			if(!wpas_is_p2p_prioritized(iface)) {
  				/* STA connection has priority over existing
  				 * P2P connection. So remove the interface */
  				wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel"
  						"concurrent mode frequency conflict");
  				eloop_register_timeout(0, 0, wpas_p2p_group_freq_conflict,
  						       iface, NULL);
  				/* If connection in progress is p2p connection, do not proceed for the connection */
  				if (wpa_s == iface)
  					return -1;
  				else
  					/* If connection in progress is STA connection, proceed for the connection */
  					return 0;
  			} else {
  				/* P2p connection has priority, disable the STA network*/
  				wpa_supplicant_disable_network(wpa_s->global->ifaces, ssid);
  				wpa_msg(wpa_s->global->ifaces, MSG_INFO, WPA_EVENT_FREQ_CONFLICT
  					" id=%d", ssid->id);
  				os_memset(wpa_s->global->ifaces->pending_bssid, 0, ETH_ALEN);
  				if (wpa_s == iface) {
  					/* p2p connection is in progress, continue connecting...*/
  					return 0;
  				}
  				else {
  					/* STA connection is in progress, do not allow to continue */
  					return -1;
  				}
  			}
  		}
  	}
  	return 0;
  }
  #endif
  