krackattacks/wpa_supplicant/p2p_supplicant.c

/*
 * wpa_supplicant - P2P
 * Copyright (c) 2009-2010, Atheros Communications
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING 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 "wpa_supplicant_i.h"
#include "driver_i.h"
#include "ap.h"
#include "config_ssid.h"
#include "config.h"
#include "mlme.h"
#include "notify.h"
#include "scan.h"
#include "bss.h"
#include "wps_supplicant.h"
#include "p2p_supplicant.h"


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(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);
static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);


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)
		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];
		if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
					 bss->freq, bss->level,
					 (const u8 *) (bss + 1),
					 bss->ie_len) > 0)
			return;
	}

	p2p_scan_res_handled(wpa_s->global->p2p);
}


static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq)
{
	struct wpa_supplicant *wpa_s = ctx;
	struct wpa_driver_scan_params params;
	int ret;
	struct wpabuf *wps_ie, *ies;
	int social_channels[] = { 2412, 2437, 2462, 0, 0 };

	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(0, &wpa_s->wps->dev, wpa_s->wps->uuid,
					WPS_REQ_ENROLLEE);
	if (wps_ie == NULL)
		return -1;

	ies = wpabuf_alloc(wpabuf_len(wps_ie) + 100);
	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);

	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_SPECIFIC:
		social_channels[0] = freq;
		social_channels[1] = 0;
		params.freqs = social_channels;
		break;
	case P2P_SCAN_SOCIAL_PLUS_ONE:
		social_channels[3] = freq;
		params.freqs = social_channels;
		break;
	}

	wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
		ret = ieee80211_sta_req_scan(wpa_s, &params);
	else
		ret = wpa_drv_scan(wpa_s, &params);

	wpabuf_free(ies);

	return ret;
}


#ifdef CONFIG_CLIENT_MLME
static void p2p_rx_action_mlme(void *ctx, const u8 *buf, size_t len, int freq)
{
	struct wpa_supplicant *wpa_s = ctx;
	const struct ieee80211_mgmt *mgmt;
	size_t hdr_len;

	if (wpa_s->global->p2p_disabled)
		return;
	mgmt = (const struct ieee80211_mgmt *) buf;
	hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
	if (hdr_len > len)
		return;
	p2p_rx_action(wpa_s->global->p2p, mgmt->da, mgmt->sa, mgmt->bssid,
		      mgmt->u.action.category,
		      &mgmt->u.action.u.vs_public_action.action,
		      len - hdr_len, freq);
}
#endif /* CONFIG_CLIENT_MLME */


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 void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s)
{
	struct wpa_ssid *ssid;
	char *gtype;

	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.
		 */
		ssid = wpa_s->conf->ssid;
		while (ssid) {
			if (ssid->p2p_group &&
			    (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
			     (ssid->key_mgmt & WPA_KEY_MGMT_WPS)))
				break;
			ssid = ssid->next;
		}
	}
	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";
	wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_REMOVED "%s %s",
		wpa_s->ifname, 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);
		wpa_s = global->ifaces;
		if (wpa_s && ifname)
			wpa_drv_if_remove(wpa_s, type, ifname);
		os_free(ifname);
		return;
	}

	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_s->current_ssid = NULL;
		wpas_notify_network_removed(wpa_s, ssid);
		wpa_config_remove_network(wpa_s->conf, id);
		wpa_supplicant_clear_status(wpa_s);
	} else {
		wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
			   "found");
	}
	wpa_supplicant_ap_deinit(wpa_s);
}


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 void 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;
		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;
	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);
	}

#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 */
}


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];

	/*
	 * 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->p2p_in_provisioning = 0;

	if (!success) {
		wpa_msg(wpa_s->parent, MSG_INFO,
			P2P_EVENT_GROUP_FORMATION_FAILURE);
		wpas_p2p_group_delete(wpa_s);
		return;
	}

	wpa_msg(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->parent->own_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;
	}

	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;
	} else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
		char psk[65];
		wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
		wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
			"%s GO ssid=\"%s\" psk=%s go_dev_addr=" MACSTR "%s",
			wpa_s->ifname, ssid_txt, psk, MAC2STR(go_dev_addr),
			persistent ? " [PERSISTENT]" : "");
	} else {
		wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
			"%s GO ssid=\"%s\" passphrase=\"%s\" go_dev_addr="
			MACSTR "%s",
			wpa_s->ifname, ssid_txt,
			ssid && ssid->passphrase ? ssid->passphrase : "",
			MAC2STR(go_dev_addr),
			persistent ? " [PERSISTENT]" : "");
	}

	if (persistent)
		wpas_p2p_store_persistent_group(wpa_s->parent, ssid,
						go_dev_addr);
}


static void wpas_send_action_cb(void *eloop_ctx, void *timeout_ctx)
{
	struct wpa_supplicant *wpa_s = eloop_ctx;
	struct wpa_supplicant *iface;
	int res;
	int without_roc;

	without_roc = wpa_s->pending_action_without_roc;
	wpa_s->pending_action_without_roc = 0;

	if (wpa_s->pending_action_tx == NULL)
		return;

	if (wpa_s->off_channel_freq != wpa_s->pending_action_freq &&
	    wpa_s->pending_action_freq != 0) {
		wpa_printf(MSG_DEBUG, "P2P: Pending Action frame TX "
			   "waiting for another freq=%u (off_channel_freq=%u)",
			   wpa_s->pending_action_freq,
			   wpa_s->off_channel_freq);
		if (without_roc && wpa_s->off_channel_freq == 0) {
			/*
			 * We may get here if wpas_send_action() found us to be
			 * on the correct channel, but remain-on-channel cancel
			 * event was received before getting here.
			 */
			wpa_printf(MSG_DEBUG, "P2P: Schedule "
				   "remain-on-channel to send Action frame");
			if (wpa_drv_remain_on_channel(
				    wpa_s, wpa_s->pending_action_freq, 200) <
			    0) {
				wpa_printf(MSG_DEBUG, "P2P: Failed to request "
					   "driver to remain on channel (%u "
					   "MHz) for Action Frame TX",
					   wpa_s->pending_action_freq);
			} else
				wpa_s->roc_waiting_drv_freq =
					wpa_s->pending_action_freq;
		}
		return;
	}

	/*
	 * This call is likely going to be on the P2P device instance if the
	 * driver uses a separate interface for that purpose. However, some
	 * Action frames are actually sent within a P2P Group and when that is
	 * the case, we need to follow power saving (e.g., GO buffering the
	 * frame for a client in PS mode or a client following the advertised
	 * NoA from its GO). To make that easier for the driver, select the
	 * correct group interface here.
	 */
	if (os_memcmp(wpa_s->pending_action_src, wpa_s->own_addr, ETH_ALEN) !=
	    0) {
		/*
		 * Try to find a group interface that matches with the source
		 * address.
		 */
		iface = wpa_s->global->ifaces;
		while (iface) {
			if (os_memcmp(wpa_s->pending_action_src,
				      iface->own_addr, ETH_ALEN) == 0)
				break;
			iface = iface->next;
		}
		if (iface) {
			wpa_printf(MSG_DEBUG, "P2P: Use group interface %s "
				   "instead of interface %s for Action TX",
				   iface->ifname, wpa_s->ifname);
		} else
			iface = wpa_s;
	} else
		iface = wpa_s;

	wpa_printf(MSG_DEBUG, "P2P: Sending pending Action frame to "
		   MACSTR " using interface %s",
		   MAC2STR(wpa_s->pending_action_dst), iface->ifname);
	res = wpa_drv_send_action(iface, wpa_s->pending_action_freq,
				  wpa_s->pending_action_dst,
				  wpa_s->pending_action_src,
				  wpa_s->pending_action_bssid,
				  wpabuf_head(wpa_s->pending_action_tx),
				  wpabuf_len(wpa_s->pending_action_tx));
	if (res) {
		wpa_printf(MSG_DEBUG, "P2P: Failed to send the pending "
			   "Action frame");
		/*
		 * Use fake TX status event to allow P2P state machine to
		 * continue.
		 */
		wpas_send_action_tx_status(
			wpa_s, wpa_s->pending_action_dst,
			wpabuf_head(wpa_s->pending_action_tx),
			wpabuf_len(wpa_s->pending_action_tx), 0);
	}
}


void wpas_send_action_tx_status(struct wpa_supplicant *wpa_s, const u8 *dst,
				const u8 *data, size_t data_len, int ack)
{
	if (wpa_s->global->p2p_disabled)
		return;

	if (wpa_s->pending_action_tx == NULL) {
		wpa_printf(MSG_DEBUG, "P2P: Ignore Action TX status - no "
			   "pending operation");
		return;
	}

	if (os_memcmp(dst, wpa_s->pending_action_dst, ETH_ALEN) != 0) {
		wpa_printf(MSG_DEBUG, "P2P: Ignore Action TX status - unknown "
			   "destination address");
		return;
	}

	wpabuf_free(wpa_s->pending_action_tx);
	wpa_s->pending_action_tx = NULL;

	p2p_send_action_cb(wpa_s->global->p2p, wpa_s->pending_action_freq,
			   wpa_s->pending_action_dst,
			   wpa_s->pending_action_src,
			   wpa_s->pending_action_bssid,
			   ack);

	if (wpa_s->pending_pd_before_join &&
	    (os_memcmp(wpa_s->pending_action_dst, wpa_s->pending_join_dev_addr,
		       ETH_ALEN) == 0 ||
	     os_memcmp(wpa_s->pending_action_dst,
		       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);
	}
}


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;

	wpa_printf(MSG_DEBUG, "P2P: Send action frame: freq=%d dst=" MACSTR
		   " src=" MACSTR " bssid=" MACSTR,
		   freq, MAC2STR(dst), MAC2STR(src), MAC2STR(bssid));

	if (wpa_s->pending_action_tx) {
		wpa_printf(MSG_DEBUG, "P2P: Dropped pending Action frame TX "
			   "to " MACSTR, MAC2STR(wpa_s->pending_action_dst));
		wpabuf_free(wpa_s->pending_action_tx);
	}
	wpa_s->pending_action_tx = wpabuf_alloc(len);
	if (wpa_s->pending_action_tx == NULL)
		return -1;
	wpabuf_put_data(wpa_s->pending_action_tx, buf, len);
	os_memcpy(wpa_s->pending_action_src, src, ETH_ALEN);
	os_memcpy(wpa_s->pending_action_dst, dst, ETH_ALEN);
	os_memcpy(wpa_s->pending_action_bssid, bssid, ETH_ALEN);
	wpa_s->pending_action_freq = freq;

	if (wpa_s->off_channel_freq == freq || freq == 0) {
		/* Already on requested channel; send immediately */
		/* TODO: Would there ever be need to extend the current
		 * duration on the channel? */
		wpa_s->pending_action_without_roc = 1;
		eloop_cancel_timeout(wpas_send_action_cb, wpa_s, NULL);
		eloop_register_timeout(0, 0, wpas_send_action_cb, wpa_s, NULL);
		return 0;
	}
	wpa_s->pending_action_without_roc = 0;

	if (wpa_s->roc_waiting_drv_freq == freq) {
		wpa_printf(MSG_DEBUG, "P2P: Already waiting for driver to get "
			   "to frequency %u MHz; continue waiting to send the "
			   "Action frame", freq);
		return 0;
	}

	wpa_printf(MSG_DEBUG, "P2P: Schedule Action frame to be transmitted "
		   "once the driver gets to the requested channel");
	if (wait_time > wpa_s->max_remain_on_chan)
		wait_time = wpa_s->max_remain_on_chan;
	if (wpa_drv_remain_on_channel(wpa_s, freq, wait_time) < 0) {
		wpa_printf(MSG_DEBUG, "P2P: Failed to request driver "
			   "to remain on channel (%u MHz) for Action "
			   "Frame TX", freq);
		return -1;
	}
	wpa_s->roc_waiting_drv_freq = freq;

	return 0;
}


static void wpas_send_action_done(void *ctx)
{
	struct wpa_supplicant *wpa_s = ctx;
	wpa_printf(MSG_DEBUG, "P2P: Action frame sequence done notification");
	wpabuf_free(wpa_s->pending_action_tx);
	wpa_s->pending_action_tx = NULL;
	if (wpa_s->off_channel_freq) {
		wpa_drv_cancel_remain_on_channel(wpa_s);
		wpa_s->off_channel_freq = 0;
		wpa_s->roc_waiting_drv_freq = 0;
	}
}


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_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, NULL /* 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 p2p_go_configured(void *ctx, void *data)
{
	struct wpa_supplicant *wpa_s = ctx;
	struct p2p_go_neg_results *params = data;
	struct wpa_ssid *ssid;

	ssid = wpa_s->current_ssid;
	if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
		wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
		wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
			"%s GO ssid=\"%s\" passphrase=\"%s\" go_dev_addr="
			MACSTR "%s",
			wpa_s->ifname,
			wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
			params->passphrase ? params->passphrase : "",
			MAC2STR(wpa_s->parent->own_addr),
			params->persistent_group ? " [PERSISTENT]" : "");
		if (params->persistent_group)
			wpas_p2p_store_persistent_group(
				wpa_s->parent, ssid,
				wpa_s->parent->own_addr);
		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);
	else if (wpa_s->p2p_pin[0])
		wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
					  wpa_s->p2p_pin, NULL, 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;

	if (wpas_copy_go_neg_results(wpa_s, params) < 0)
		return;

	ssid = wpa_config_add_network(wpa_s->conf);
	if (ssid == NULL)
		return;

	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->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;
	ssid->passphrase = os_strdup(params->passphrase);

	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 = 1;
	wpa_s->reassociate = 1;
	wpa_s->disconnected = 0;
	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(device_type);
	C(config_methods);
#undef C
}


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;
	}

	os_snprintf(ifname, sizeof(ifname), "%s-p2p-%d", wpa_s->ifname,
		    wpa_s->p2p_group_idx);
	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) < 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");
		return NULL;
	}

	os_memset(&iface, 0, sizeof(iface));
	iface.ifname = wpa_s->pending_interface_name;
	iface.driver = wpa_s->driver->name;
	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");
	if (wpa_s->global->p2p)
		p2p_group_formation_failed(wpa_s->global->p2p);
	wpas_group_formation_completed(wpa_s, 0);
}


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_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(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
			res->status);
		wpas_p2p_remove_pending_group_interface(wpa_s);
		return;
	}

	wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);

	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);
	/* TODO: add peer Config Timeout */
	eloop_register_timeout(15, 0, wpas_p2p_group_formation_timeout, wpa_s,
			       NULL);
}


void wpas_go_neg_req_rx(void *ctx, const u8 *src)
{
	struct wpa_supplicant *wpa_s = ctx;
	wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR,
		MAC2STR(src));
}


void wpas_dev_found(void *ctx, const u8 *addr, const u8 *dev_addr,
		    const u8 *pri_dev_type, const char *dev_name,
		    u16 config_methods, u8 dev_capab, u8 group_capab)
{
	struct wpa_supplicant *wpa_s = ctx;
	char devtype[WPS_DEV_TYPE_BUFSIZE];
	wpa_msg(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",
		MAC2STR(addr), MAC2STR(dev_addr),
		wps_dev_type_bin2str(pri_dev_type, devtype, sizeof(devtype)),
		dev_name, config_methods, dev_capab, group_capab);
}


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);

	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->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_drv_cancel_remain_on_channel(wpa_s);
		wpa_s->off_channel_freq = 0;
		wpa_s->roc_waiting_drv_freq = 0;
	}
	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));
}


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 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;
	struct wpabuf buf;
	u8 *len_pos;

	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;
	}

	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);

	wpabuf_set(&buf, query, query_len);
	bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
	if (bsrv == NULL) {
		wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
			   "available");

		/* Status Code */
		wpabuf_put_u8(resp, P2P_SD_QUERY_DATA_NOT_AVAILABLE);
		/* Response Data: empty */
		WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
			     2);
		return;
	}

	/* 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));

	if (wpabuf_tailroom(resp) >=
	    wpabuf_len(bsrv->query) + 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 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;
	}

	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';

	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);

	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);
	}

	if (count == 0) {
		wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
			   "available");
		/* Status Code */
		wpabuf_put_u8(resp, P2P_SD_QUERY_DATA_NOT_AVAILABLE);
		/* Response Data: empty */
	}

	WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
}


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)
		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);

		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;
		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;
	}

	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);
	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;
	}
}


void * wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
			   const struct wpabuf *tlvs)
{
	return p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
}


void * wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
				u8 version, const char *query)
{
	struct wpabuf *tlvs;
	void *ret;

	tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
	if (tlvs == NULL)
		return NULL;
	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;
}


int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, void *req)
{
	return p2p_sd_cancel_request(wpa_s->global->p2p, req);
}


void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
			  const u8 *dst, u8 dialog_token,
			  const struct wpabuf *resp_tlvs)
{
	p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
			resp_tlvs);
}


void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
{
	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 = wpas_p2p_service_get_bonjour(wpa_s, query);
	if (bsrv) {
		wpabuf_free(query);
		wpabuf_free(bsrv->resp);
		bsrv->resp = resp;
		return 0;
	}

	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)
{
	wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
		MAC2STR(peer), wps_generate_pin(), params);
}


static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
					const u8 *peer, const char *params)
{
	wpa_msg(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)
{
	struct wpa_supplicant *wpa_s = ctx;
	char devtype[WPS_DEV_TYPE_BUFSIZE];
	char params[200];
	u8 empty_dev_type[8];

	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",
		    MAC2STR(dev_addr),
		    wps_dev_type_bin2str(pri_dev_type, devtype,
					 sizeof(devtype)),
		    dev_name, supp_config_methods, dev_capab, group_capab);
	params[sizeof(params) - 1] = '\0';

	if (config_methods & WPS_CONFIG_DISPLAY)
		wpas_prov_disc_local_display(wpa_s, peer, params);
	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(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
			"%s", MAC2STR(peer), params);
}


void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
{
	struct wpa_supplicant *wpa_s = ctx;
	if (config_methods & WPS_CONFIG_DISPLAY)
		wpas_prov_disc_local_keypad(wpa_s, peer, "");
	else if (config_methods & WPS_CONFIG_KEYPAD)
		wpas_prov_disc_local_display(wpa_s, peer, "");
	else if (config_methods & WPS_CONFIG_PUSHBUTTON)
		wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR,
			MAC2STR(peer));
}


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)
{
	struct wpa_supplicant *wpa_s = ctx;
	struct wpa_ssid *s;
	u8 cur_bssid[ETH_ALEN];
	int res;

	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) {
			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;
	}

	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:
	if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
	    wpa_s->assoc_freq) {
		wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
			   "the channel we are already using");
		*force_freq = wpa_s->assoc_freq;
	}

	res = wpa_drv_shared_freq(wpa_s);
	if (res > 0) {
		wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
			   "with the channel we are already using on a "
			   "shared interface");
		*force_freq = res;
	}

	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) {
			wpas_p2p_group_add_persistent(
				wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0);
		} else {
			wpas_p2p_join(wpa_s, bssid, go_dev_addr,
				      wpa_s->p2p_wps_method);
		}
		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(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(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
				"sa=" MACSTR " go_dev_addr=" MACSTR
				" unknown-network",
				MAC2STR(sa), MAC2STR(go_dev_addr));
		}
		return;
	}

	wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
		" persistent=%d", MAC2STR(sa), s->id);
}


static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
{
	struct wpa_supplicant *wpa_s = ctx;
	struct wpa_ssid *ssid;

	if (bssid) {
		wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
			"status=%d " MACSTR,
			status, MAC2STR(bssid));
	} else {
		wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
			"status=%d ", status);
	}

	if (status != P2P_SC_SUCCESS) {
		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;
	}

	wpas_p2p_group_add_persistent(wpa_s, ssid,
				      ssid->mode == WPAS_MODE_P2P_GO, 0);
}


static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
				   struct p2p_config *p2p)
{
	struct hostapd_hw_modes *modes;
	u16 num_modes, flags;
	int i, cla;
	int band24 = 0, band5_low = 0, band5_high = 0;

	/* TODO: more detailed selection of channels within reg_class based on
	 * driver capabilities */

	modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes, &flags);
	if (modes == NULL) {
		wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
			   "of all supported channels; assume dualband "
			   "support");
		band24 = band5_low = band5_high = 1;
	} else {
		for (i = 0; i < num_modes; i++) {
			struct hostapd_hw_modes *mode;
			mode = &modes[i];
			if (mode->mode == HOSTAPD_MODE_IEEE80211G) {
				band24 = 1;
			} else if (mode->mode == HOSTAPD_MODE_IEEE80211A) {
				int j;
				for (j = 0; j < mode->num_channels; j++) {
					struct hostapd_channel_data *ch;
					ch = &mode->channels[j];
					if (ch->chan == 36)
						band5_low = 1;
					else if (ch->chan == 157)
						band5_high = 1;
				}
			}
		}
	}

	cla = 0;

	if (band24) {
		wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for "
			   "2.4 GHz band");

		/* Operating class 81 - 2.4 GHz band channels 1..13 */
		p2p->channels.reg_class[cla].reg_class = 81;
		p2p->channels.reg_class[cla].channels = 13;
		for (i = 0; i < 13; i++)
			p2p->channels.reg_class[cla].channel[i] = i + 1;
		cla++;

		/* Operating class 82 - 2.4 GHz band channel 14 */
		p2p->channels.reg_class[cla].reg_class = 82;
		p2p->channels.reg_class[cla].channels = 1;
		p2p->channels.reg_class[cla].channel[0] = 14;
		cla++;

#if 0
		/* Operating class 83 - 2.4 GHz band channels 1..9; 40 MHz */
		p2p->channels.reg_class[cla].reg_class = 83;
		p2p->channels.reg_class[cla].channels = 9;
		for (i = 0; i < 9; i++)
			p2p->channels.reg_class[cla].channel[i] = i + 1;
		cla++;

		/* Operating class 84 - 2.4 GHz band channels 5..13; 40 MHz */
		p2p->channels.reg_class[cla].reg_class = 84;
		p2p->channels.reg_class[cla].channels = 9;
		for (i = 0; i < 9; i++)
			p2p->channels.reg_class[cla].channel[i] = i + 5;
		cla++;
#endif
	}

	if (band5_low) {
		wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for "
			   "lower 5 GHz band");

		/* Operating class 115 - 5 GHz, channels 36-48 */
		p2p->channels.reg_class[cla].reg_class = 115;
		p2p->channels.reg_class[cla].channels = 4;
		p2p->channels.reg_class[cla].channel[0] = 36;
		p2p->channels.reg_class[cla].channel[1] = 40;
		p2p->channels.reg_class[cla].channel[2] = 44;
		p2p->channels.reg_class[cla].channel[3] = 48;
		cla++;

#if 0
		/* Operating class 116 - 5 GHz, channels 36,44; 40 MHz */
		p2p->channels.reg_class[cla].reg_class = 116;
		p2p->channels.reg_class[cla].channels = 2;
		p2p->channels.reg_class[cla].channel[0] = 36;
		p2p->channels.reg_class[cla].channel[1] = 44;
		cla++;

		/* Operating class 117 - 5 GHz, channels 40,48; 40 MHz */
		p2p->channels.reg_class[cla].reg_class = 117;
		p2p->channels.reg_class[cla].channels = 2;
		p2p->channels.reg_class[cla].channel[0] = 40;
		p2p->channels.reg_class[cla].channel[1] = 48;
		cla++;
#endif
	}

	if (band5_high) {
		wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for "
			   "higher 5 GHz band");

		/* Operating class 124 - 5 GHz, channels 149,153,157,161 */
		p2p->channels.reg_class[cla].reg_class = 124;
		p2p->channels.reg_class[cla].channels = 4;
		p2p->channels.reg_class[cla].channel[0] = 149;
		p2p->channels.reg_class[cla].channel[1] = 153;
		p2p->channels.reg_class[cla].channel[2] = 157;
		p2p->channels.reg_class[cla].channel[3] = 161;
		cla++;

#if 0
		/* Operating class 126 - 5 GHz, channels 149,157; 40 MHz */
		p2p->channels.reg_class[cla].reg_class = 126;
		p2p->channels.reg_class[cla].channels = 2;
		p2p->channels.reg_class[cla].channel[0] = 149;
		p2p->channels.reg_class[cla].channel[1] = 157;
		cla++;

		/* Operating class 127 - 5 GHz, channels 153,161; 40 MHz */
		p2p->channels.reg_class[cla].reg_class = 127;
		p2p->channels.reg_class[cla].channels = 2;
		p2p->channels.reg_class[cla].channel[0] = 153;
		p2p->channels.reg_class[cla].channel[1] = 161;
		cla++;
#endif
	}

	p2p->channels.reg_classes = cla;

	if (modes)
		ieee80211_sta_free_hw_features(modes, num_modes);

	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);
}


/**
 * 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->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
		return 0;

#ifdef CONFIG_CLIENT_MLME
	if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) {
		wpa_s->mlme.public_action_cb = p2p_rx_action_mlme;
		wpa_s->mlme.public_action_cb_ctx = wpa_s;
	}
#endif /* CONFIG_CLIENT_MLME */

	if (wpa_drv_disable_11b_rates(wpa_s, 1) < 0) {
		wpa_printf(MSG_DEBUG, "P2P: Failed to disable 11b rates");
		/* Continue anyway; this is not really a fatal error */
	}

	if (global->p2p)
		return 0;

	os_memset(&p2p, 0, sizeof(p2p));
	p2p.msg_ctx = wpa_s;
	p2p.cb_ctx = wpa_s;
	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.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.invitation_process = wpas_invitation_process;
	p2p.invitation_received = wpas_invitation_received;
	p2p.invitation_result = wpas_invitation_result;
	p2p.get_noa = wpas_get_noa;

	os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
	os_memcpy(p2p.dev_addr, wpa_s->own_addr, ETH_ALEN);
	p2p.dev_name = wpa_s->conf->device_name;

	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;
	}

	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;
	} else {
		p2p.op_reg_class = 81;
		/*
		 * For initial tests, pick the operation channel randomly.
		 * TODO: Use scan results (etc.) to select the best channel.
		 */
		p2p.op_channel = 1 + r % 11;
	}
	wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d  "
		   "Own preferred operation channel: %d",
		   p2p.channel, p2p.op_channel);
	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, "US\x04", 3);

	if (wpas_p2p_setup_channels(wpa_s, &p2p)) {
		wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
			   "channel list");
		return -1;
	}

	if (wpa_s->conf->device_type &&
	    wps_dev_type_str2bin(wpa_s->conf->device_type, p2p.pri_dev_type) <
	    0) {
		wpa_printf(MSG_ERROR, "P2P: Invalid device_type");
		return -1;
	}

	for (i = 0; i < MAX_SEC_DEVICE_TYPES; i++) {
		if (wpa_s->conf->sec_device_type[i] == NULL)
			continue;
		if (wps_dev_type_str2bin(
			    wpa_s->conf->sec_device_type[i],
			    p2p.sec_dev_type[p2p.num_sec_dev_types]) < 0) {
			wpa_printf(MSG_ERROR, "P2P: Invalid sec_device_type");
			return -1;
		}
		p2p.num_sec_dev_types++;
		if (p2p.num_sec_dev_types == P2P_SEC_DEVICE_TYPES)
			break;
	}

	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);
	}

	global->p2p = p2p_init(&p2p);
	if (global->p2p == NULL)
		return -1;

	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);
	os_free(wpa_s->go_params);
	wpa_s->go_params = NULL;
	wpabuf_free(wpa_s->pending_action_tx);
	wpa_s->pending_action_tx = NULL;
	eloop_cancel_timeout(wpas_send_action_cb, wpa_s, NULL);
	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);
	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;
	char *ifname;

	if (global->p2p == NULL)
		return;

	/* Remove remaining P2P group interfaces */
	wpa_s = global->ifaces;
	while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
		wpa_s = wpa_s->next;
	while (wpa_s) {
		enum wpa_driver_if_type type;
		tmp = global->ifaces;
		while (tmp &&
		       (tmp == wpa_s ||
			tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
			tmp = tmp->next;
		}
		if (tmp == NULL)
			break;
		ifname = os_strdup(tmp->ifname);
		type = wpas_p2p_if_type(tmp->p2p_group_interface);
		wpa_supplicant_remove_iface(global, tmp);
		if (ifname)
			wpa_drv_if_remove(wpa_s, type, ifname);
		os_free(ifname);
	}

	p2p_deinit(global->p2p);
	global->p2p = NULL;
}


static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
{
	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
		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)
{
	return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
			   go_intent, own_interface_addr, force_freq,
			   persistent_group);
}


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)
{
	return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
			     go_intent, own_interface_addr, force_freq,
			     persistent_group);
}


static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
				   struct wpa_scan_results *scan_res)
{
	struct wpa_bss *bss;

	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 join",
		   scan_res ? (int) scan_res->num : -1);

	if (scan_res)
		wpas_p2p_scan_res_handler(wpa_s, scan_res);

	bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
	if (bss) {
		u16 method;

		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), bss->freq);
		wpa_s->pending_pd_before_join = 1;

		switch (wpa_s->pending_join_wps_method) {
		case WPS_PIN_LABEL:
		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_prov_disc_req(wpa_s->global->p2p,
				      wpa_s->pending_join_dev_addr, method, 1)
		    < 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;
		}

		/*
		 * Actual join operation will be started from the Action frame
		 * TX status callback.
		 */
		return;
	}

	wpa_printf(MSG_DEBUG, "P2P: Target BSS/GO not yet in BSS table - "
		   "cannot send Provision Discovery Request");

start:
	/* Start join operation immediately */
	wpas_p2p_join_start(wpa_s);
}


static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
{
	struct wpa_supplicant *wpa_s = eloop_ctx;
	int ret;
	struct wpa_driver_scan_params params;
	struct wpabuf *wps_ie, *ies;

	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(0, &wpa_s->wps->dev, wpa_s->wps->uuid,
					WPS_REQ_ENROLLEE);
	if (wps_ie == NULL) {
		wpas_p2p_scan_res_join(wpa_s, NULL);
		return;
	}

	ies = wpabuf_alloc(wpabuf_len(wps_ie) + 100);
	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);

	params.extra_ies = wpabuf_head(ies);
	params.extra_ies_len = wpabuf_len(ies);

	/*
	 * Run a scan to update BSS table and start Provision Discovery once
	 * the new scan results become available.
	 */
	wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
		ret = ieee80211_sta_req_scan(wpa_s, &params);
	else
		ret = wpa_drv_scan(wpa_s, &params);

	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);
	}
}


static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
			 const u8 *dev_addr, enum p2p_wps_method wps_method)
{
	wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
		   MACSTR " dev " MACSTR ")",
		   MAC2STR(iface_addr), MAC2STR(dev_addr));

	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);

	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;

	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;
	}

	group->p2p_in_provisioning = 1;

	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;
	wpas_start_wps_enrollee(group, &res);

	return 0;
}


/**
 * 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
 * @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
 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on failure
 */
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 join, int auth, int go_intent,
		     int freq)
{
	int force_freq = 0;
	u8 bssid[ETH_ALEN];
	int ret = 0;
	enum wpa_driver_if_type iftype;

	if (go_intent < 0)
		go_intent = wpa_s->conf->p2p_go_intent;

	if (!auth)
		wpa_s->p2p_long_listen = 0;

	wpa_s->p2p_wps_method = wps_method;

	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) {
		u8 iface_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;
		}
		if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
					   iface_addr) < 0)
			os_memcpy(iface_addr, peer_addr, ETH_ALEN);
		if (wpas_p2p_join(wpa_s, iface_addr, peer_addr, wps_method) <
		    0)
			return -1;
		return ret;
	}

	if (freq > 0)
		force_freq = freq;
	else if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
		 wpa_s->assoc_freq)
		force_freq = wpa_s->assoc_freq;
	else {
		force_freq = wpa_drv_shared_freq(wpa_s);
		if (force_freq < 0)
			force_freq = 0;
	}

	if (force_freq > 0) {
		wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
			   "channel we are already using (%u MHz) on another "
			   "interface", force_freq);
	}

	wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);

	if (!wpa_s->create_p2p_iface) {
		if (auth) {
			if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
						 go_intent, wpa_s->own_addr,
						 force_freq, persistent_group)
			    < 0)
				return -1;
			return ret;
		}
		if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
					  go_intent, wpa_s->own_addr,
					  force_freq, persistent_group) < 0)
			return -1;
		return ret;
	}

	/* Prepare to add a new interface for the group */
	iftype = WPA_IF_P2P_GROUP;
	if (join)
		iftype = WPA_IF_P2P_CLIENT;
	else 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 (auth) {
		if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
					 go_intent,
					 wpa_s->pending_interface_addr,
					 force_freq, persistent_group) < 0)
			return -1;
		return ret;
	}
	if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, go_intent,
				  wpa_s->pending_interface_addr,
				  force_freq, persistent_group) < 0) {
		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)
{
	wpa_s->roc_waiting_drv_freq = 0;
	wpa_s->off_channel_freq = freq;
	wpas_send_action_cb(wpa_s, NULL);
	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;

	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_s->off_channel_freq = 0;
	if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
		return; /* P2P module started a new operation */
	if (wpa_s->pending_action_tx)
		return;
	if (wpa_s->p2p_long_listen > 0)
		wpa_s->p2p_long_listen -= 5;
	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 * 1000);
	}
}


/**
 * 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;
			wpas_p2p_group_delete(prev);
		}
		return 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)
		return -1;

	wpas_p2p_group_delete(wpa_s);

	return 0;
}


static void wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
				    struct p2p_go_neg_results *params,
				    int freq)
{
	u8 bssid[ETH_ALEN];
	int res;

	os_memset(params, 0, sizeof(*params));
	params->role_go = 1;
	params->freq = 2412;
	if (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)
		params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
	else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
		 wpa_s->conf->p2p_oper_reg_class == 118)
		params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
	if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
	    wpa_s->assoc_freq && !freq) {
		wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
			   "already using");
		params->freq = wpa_s->assoc_freq;
	}

	res = wpa_drv_shared_freq(wpa_s);
	if (res > 0 && !freq) {
		wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
			   "already using on a shared interface");
		params->freq = res;
	}
}


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))
		return wpa_s;

	if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
					 WPA_IF_P2P_CLIENT) < 0)
		return NULL;
	group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
	if (group_wpa_s == NULL) {
		wpas_p2p_remove_pending_group_interface(wpa_s);
		return NULL;
	}

	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)
{
	struct p2p_go_neg_results params;

	wpas_p2p_init_go_params(wpa_s, &params, freq);
	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_supplicant_ap_deinit(wpa_s);

	ssid = wpa_config_add_network(wpa_s->conf);
	if (ssid == NULL)
		return -1;
	wpas_notify_network_added(wpa_s, ssid);
	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) {
		wpas_notify_network_removed(wpa_s, ssid);
		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;
	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)
{
	struct p2p_go_neg_results params;

	if (ssid->disabled != 2 || ssid->ssid == NULL)
		return -1;

	wpa_s->p2p_long_listen = 0;
	eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);

	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;

	wpas_p2p_init_go_params(wpa_s, &params, freq);

	params.role_go = 1;
	if (ssid->passphrase == NULL ||
	    os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
		wpa_printf(MSG_DEBUG, "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 (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);
}


struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
				       int persistent_group,
				       int group_formation)
{
	struct p2p_group *group;
	struct p2p_group_config *cfg;

	cfg = os_zalloc(sizeof(*cfg));
	if (cfg == NULL)
		return NULL;

	cfg->persistent_group = persistent_group;
	os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
	cfg->cb_ctx = wpa_s;
	cfg->ie_update = wpas_p2p_ie_update;

	group = p2p_group_init(wpa_s->global->p2p, cfg);
	if (group == NULL)
		os_free(cfg);
	if (!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)
{
	if (!wpa_s->p2p_in_provisioning) {
		wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
			   "provisioning not in progress");
		return;
	}

	eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
			     NULL);
	if (wpa_s->global->p2p)
		p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
	wpas_group_formation_completed(wpa_s, 1);
}


int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
		       const char *config_method)
{
	u16 config_methods;

	if (os_strcmp(config_method, "display") == 0)
		config_methods = WPS_CONFIG_DISPLAY;
	else if (os_strcmp(config_method, "keypad") == 0)
		config_methods = WPS_CONFIG_KEYPAD;
	else if (os_strcmp(config_method, "pbc") == 0 ||
		 os_strcmp(config_method, "pushbutton") == 0)
		config_methods = WPS_CONFIG_PUSHBUTTON;
	else
		return -1;

	if (wpa_s->global->p2p == NULL)
		return -1;

	return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
				 config_methods, 0);
}


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);
}


int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
		  enum p2p_discovery_type type)
{
	wpa_s->p2p_long_listen = 0;

	return p2p_find(wpa_s->global->p2p, timeout, type);
}


void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
{
	wpa_s->p2p_long_listen = 0;
	eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);

	p2p_stop_find(wpa_s->global->p2p);

	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 (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;

	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;
		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, const u8 *bssid,
			  u8 *buf, size_t len, int p2p_group)
{
	if (wpa_s->global->p2p_disabled)
		return -1;
	if (wpa_s->global->p2p == NULL)
		return -1;

	return p2p_assoc_req_ie(wpa_s->global->p2p, bssid, buf, len,
				p2p_group);
}


int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
			  const u8 *ie, size_t ie_len)
{
	if (wpa_s->global->p2p_disabled)
		return 0;
	if (wpa_s->global->p2p == NULL)
		return 0;

	return p2p_probe_req_rx(wpa_s->global->p2p, addr, ie, ie_len);
}


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);
}


void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
{
	p2p_group_deinit(wpa_s->p2p_group);
	wpa_s->p2p_group = NULL;
}


int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
{
	wpa_s->p2p_long_listen = 0;

	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)
{
	enum p2p_invite_role role;
	u8 *bssid = NULL;

	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;

	return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
			  ssid->ssid, ssid->ssid_len, 0, go_dev_addr, 1);
}


/* 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;

	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;
	}

	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->own_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->pending_invite_ssid_id = -1;

	return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
			  ssid->ssid, ssid->ssid_len, 0, go_dev_addr, 0);
}


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 persistent;

	if (!wpa_s->show_group_started || !ssid)
		return;

	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 (ssid->passphrase == NULL && ssid->psk_set) {
		char psk[65];
		wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
		wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
			"%s client ssid=\"%s\" psk=%s go_dev_addr=" MACSTR
			"%s",
			wpa_s->ifname, ssid_txt, psk, MAC2STR(go_dev_addr),
			persistent ? " [PERSISTENT]" : "");
	} else {
		wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
			"%s client ssid=\"%s\" passphrase=\"%s\" go_dev_addr="
			MACSTR "%s",
			wpa_s->ifname, ssid_txt,
			ssid->passphrase ? ssid->passphrase : "",
			MAC2STR(go_dev_addr),
			persistent ? " [PERSISTENT]" : "");
	}

	if (persistent)
		wpas_p2p_store_persistent_group(wpa_s->parent, ssid,
						go_dev_addr);
}


int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
			  u32 interval1, u32 duration2, u32 interval2)
{
	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)
{
	return p2p_ext_listen(wpa_s->global->p2p, period, interval);
}


void wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
			   u16 reason_code, const u8 *ie, size_t ie_len)
{
	if (wpa_s->global->p2p_disabled)
		return;

	p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
}


void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
			     u16 reason_code, const u8 *ie, size_t ie_len)
{
	if (wpa_s->global->p2p_disabled)
		return;

	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->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) {
		u8 pri_dev_type[8];
		if (wpa_s->conf->device_type) {
			if (wps_dev_type_str2bin(wpa_s->conf->device_type,
						 pri_dev_type) < 0) {
				wpa_printf(MSG_ERROR, "P2P: Invalid "
					   "device_type");
			} else
				p2p_set_pri_dev_type(p2p, pri_dev_type);
		}
	}

	if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
		u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8];
		size_t num = 0;
		int i;
		for (i = 0; i < MAX_SEC_DEVICE_TYPES; i++) {
			if (wpa_s->conf->sec_device_type[i] == NULL)
				continue;
			if (wps_dev_type_str2bin(
				    wpa_s->conf->sec_device_type[i],
				    sec_dev_type[num]) < 0) {
				wpa_printf(MSG_ERROR, "P2P: Invalid "
					   "sec_device_type");
				continue;
			}
			num++;
			if (num == P2P_SEC_DEVICE_TYPES)
				break;
		}
		p2p_set_sec_dev_types(p2p, (void *) sec_dev_type, num);
	}

	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);
	}
}