src/p2p/p2p_build.c - platform/external/wpa_supplicant_8 - Git at Google

 /*
  * P2P - IE builder
  * 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 "common/ieee802_11_defs.h"
 #include "wps/wps_i.h"
 #include "p2p_i.h"


 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token)
 {
 	wpabuf_put_u8(buf, WLAN_ACTION_VENDOR_SPECIFIC);
 	wpabuf_put_be24(buf, OUI_WFA);
 	wpabuf_put_u8(buf, P2P_OUI_TYPE);

 	wpabuf_put_u8(buf, subtype); /* OUI Subtype */
 	wpabuf_put_u8(buf, dialog_token);
 	wpa_printf(MSG_DEBUG, "P2P: * Dialog Token: %d", dialog_token);
 }


 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
 				   u8 dialog_token)
 {
 	wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
 	wpabuf_put_u8(buf, WLAN_PA_VENDOR_SPECIFIC);
 	wpabuf_put_be24(buf, OUI_WFA);
 	wpabuf_put_u8(buf, P2P_OUI_TYPE);

 	wpabuf_put_u8(buf, subtype); /* OUI Subtype */
 	wpabuf_put_u8(buf, dialog_token);
 	wpa_printf(MSG_DEBUG, "P2P: * Dialog Token: %d", dialog_token);
 }


 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf)
 {
 	u8 *len;

 	/* P2P IE header */
 	wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
 	len = wpabuf_put(buf, 1); /* IE length to be filled */
 	wpabuf_put_be24(buf, OUI_WFA);
 	wpabuf_put_u8(buf, P2P_OUI_TYPE);
 	wpa_printf(MSG_DEBUG, "P2P: * P2P IE header");
 	return len;
 }


 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len)
 {
 	/* Update P2P IE Length */
 	*len = (u8 *) wpabuf_put(buf, 0) - len - 1;
 }


 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab)
 {
 	/* P2P Capability */
 	wpabuf_put_u8(buf, P2P_ATTR_CAPABILITY);
 	wpabuf_put_le16(buf, 2);
 	wpabuf_put_u8(buf, dev_capab); /* Device Capabilities */
 	wpabuf_put_u8(buf, group_capab); /* Group Capabilities */
 	wpa_printf(MSG_DEBUG, "P2P: * Capability dev=%02x group=%02x",
 		   dev_capab, group_capab);
 }


 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent)
 {
 	/* Group Owner Intent */
 	wpabuf_put_u8(buf, P2P_ATTR_GROUP_OWNER_INTENT);
 	wpabuf_put_le16(buf, 1);
 	wpabuf_put_u8(buf, go_intent);
 	wpa_printf(MSG_DEBUG, "P2P: * GO Intent: Intent %u Tie breaker %u",
 		   go_intent >> 1, go_intent & 0x01);
 }


 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
 				u8 reg_class, u8 channel)
 {
 	/* Listen Channel */
 	wpabuf_put_u8(buf, P2P_ATTR_LISTEN_CHANNEL);
 	wpabuf_put_le16(buf, 5);
 	wpabuf_put_data(buf, country, 3);
 	wpabuf_put_u8(buf, reg_class); /* Regulatory Class */
 	wpabuf_put_u8(buf, channel); /* Channel Number */
 	wpa_printf(MSG_DEBUG, "P2P: * Listen Channel: Regulatory Class %u "
 		   "Channel %u", reg_class, channel);
 }


 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
 				   u8 reg_class, u8 channel)
 {
 	/* Operating Channel */
 	wpabuf_put_u8(buf, P2P_ATTR_OPERATING_CHANNEL);
 	wpabuf_put_le16(buf, 5);
 	wpabuf_put_data(buf, country, 3);
 	wpabuf_put_u8(buf, reg_class); /* Regulatory Class */
 	wpabuf_put_u8(buf, channel); /* Channel Number */
 	wpa_printf(MSG_DEBUG, "P2P: * Operating Channel: Regulatory Class %u "
 		   "Channel %u", reg_class, channel);
 }


 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
 			      struct p2p_channels *chan)
 {
 	u8 *len;
 	size_t i;

 	/* Channel List */
 	wpabuf_put_u8(buf, P2P_ATTR_CHANNEL_LIST);
 	len = wpabuf_put(buf, 2); /* IE length to be filled */
 	wpabuf_put_data(buf, country, 3); /* Country String */

 	for (i = 0; i < chan->reg_classes; i++) {
 		struct p2p_reg_class *c = &chan->reg_class[i];
 		wpabuf_put_u8(buf, c->reg_class);
 		wpabuf_put_u8(buf, c->channels);
 		wpabuf_put_data(buf, c->channel, c->channels);
 	}

 	/* Update attribute length */
 	WPA_PUT_LE16(len, (u8 *) wpabuf_put(buf, 0) - len - 2);
 	wpa_hexdump(MSG_DEBUG, "P2P: * Channel List",
 		    len + 2, (u8 *) wpabuf_put(buf, 0) - len - 2);
 }

 void p2p_buf_add_status(struct wpabuf *buf, u8 status)
 {
 	/* Status */
 	wpabuf_put_u8(buf, P2P_ATTR_STATUS);
 	wpabuf_put_le16(buf, 1);
 	wpabuf_put_u8(buf, status);
 	wpa_printf(MSG_DEBUG, "P2P: * Status: %d", status);
 }


 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
 			     struct p2p_device *peer)
 {
 	u8 *len;
 	u16 methods;
 	size_t nlen, i;

 	/* P2P Device Info */
 	wpabuf_put_u8(buf, P2P_ATTR_DEVICE_INFO);
 	len = wpabuf_put(buf, 2); /* IE length to be filled */

 	/* P2P Device address */
 	wpabuf_put_data(buf, p2p->cfg->dev_addr, ETH_ALEN);

 	/* Config Methods */
 	methods = 0;
 	if (peer && peer->wps_method != WPS_NOT_READY) {
 		if (peer->wps_method == WPS_PBC)
 			methods |= WPS_CONFIG_PUSHBUTTON;
 		else if (peer->wps_method == WPS_PIN_DISPLAY ||
 			 peer->wps_method == WPS_PIN_KEYPAD)
 			methods |= WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD;
 	} else if (p2p->cfg->config_methods) {
 		methods |= p2p->cfg->config_methods &
 			(WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_DISPLAY |
 			 WPS_CONFIG_KEYPAD);
 	} else {
 		methods |= WPS_CONFIG_PUSHBUTTON;
 		methods |= WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD;
 	}
 	wpabuf_put_be16(buf, methods);

 	/* Primary Device Type */
 	wpabuf_put_data(buf, p2p->cfg->pri_dev_type,
 			sizeof(p2p->cfg->pri_dev_type));

 	/* Number of Secondary Device Types */
 	wpabuf_put_u8(buf, p2p->cfg->num_sec_dev_types);

 	/* Secondary Device Type List */
 	for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
 		wpabuf_put_data(buf, p2p->cfg->sec_dev_type[i],
 				WPS_DEV_TYPE_LEN);

 	/* Device Name */
 	nlen = p2p->cfg->dev_name ? os_strlen(p2p->cfg->dev_name) : 0;
 	wpabuf_put_be16(buf, ATTR_DEV_NAME);
 	wpabuf_put_be16(buf, nlen);
 	wpabuf_put_data(buf, p2p->cfg->dev_name, nlen);

 	/* Update attribute length */
 	WPA_PUT_LE16(len, (u8 *) wpabuf_put(buf, 0) - len - 2);
 	wpa_printf(MSG_DEBUG, "P2P: * Device Info");
 }


 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr)
 {
 	/* P2P Device ID */
 	wpabuf_put_u8(buf, P2P_ATTR_DEVICE_ID);
 	wpabuf_put_le16(buf, ETH_ALEN);
 	wpabuf_put_data(buf, dev_addr, ETH_ALEN);
 	wpa_printf(MSG_DEBUG, "P2P: * Device ID: " MACSTR, MAC2STR(dev_addr));
 }


 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
 				u8 client_timeout)
 {
 	/* Configuration Timeout */
 	wpabuf_put_u8(buf, P2P_ATTR_CONFIGURATION_TIMEOUT);
 	wpabuf_put_le16(buf, 2);
 	wpabuf_put_u8(buf, go_timeout);
 	wpabuf_put_u8(buf, client_timeout);
 	wpa_printf(MSG_DEBUG, "P2P: * Configuration Timeout: GO %d (*10ms)  "
 		   "client %d (*10ms)", go_timeout, client_timeout);
 }


 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr)
 {
 	/* Intended P2P Interface Address */
 	wpabuf_put_u8(buf, P2P_ATTR_INTENDED_INTERFACE_ADDR);
 	wpabuf_put_le16(buf, ETH_ALEN);
 	wpabuf_put_data(buf, interface_addr, ETH_ALEN);
 	wpa_printf(MSG_DEBUG, "P2P: * Intended P2P Interface Address " MACSTR,
 		   MAC2STR(interface_addr));
 }


 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid)
 {
 	/* P2P Group BSSID */
 	wpabuf_put_u8(buf, P2P_ATTR_GROUP_BSSID);
 	wpabuf_put_le16(buf, ETH_ALEN);
 	wpabuf_put_data(buf, bssid, ETH_ALEN);
 	wpa_printf(MSG_DEBUG, "P2P: * P2P Group BSSID " MACSTR,
 		   MAC2STR(bssid));
 }


 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
 			  const u8 *ssid, size_t ssid_len)
 {
 	/* P2P Group ID */
 	wpabuf_put_u8(buf, P2P_ATTR_GROUP_ID);
 	wpabuf_put_le16(buf, ETH_ALEN + ssid_len);
 	wpabuf_put_data(buf, dev_addr, ETH_ALEN);
 	wpabuf_put_data(buf, ssid, ssid_len);
 	wpa_printf(MSG_DEBUG, "P2P: * P2P Group ID " MACSTR,
 		   MAC2STR(dev_addr));
 }


 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags)
 {
 	/* Invitation Flags */
 	wpabuf_put_u8(buf, P2P_ATTR_INVITATION_FLAGS);
 	wpabuf_put_le16(buf, 1);
 	wpabuf_put_u8(buf, flags);
 	wpa_printf(MSG_DEBUG, "P2P: * Invitation Flags: bitmap 0x%x", flags);
 }


 static void p2p_buf_add_noa_desc(struct wpabuf *buf, struct p2p_noa_desc *desc)
 {
 	if (desc == NULL)
 		return;

 	wpabuf_put_u8(buf, desc->count_type);
 	wpabuf_put_le32(buf, desc->duration);
 	wpabuf_put_le32(buf, desc->interval);
 	wpabuf_put_le32(buf, desc->start_time);
 }


 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
 		     struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2)
 {
 	/* Notice of Absence */
 	wpabuf_put_u8(buf, P2P_ATTR_NOTICE_OF_ABSENCE);
 	wpabuf_put_le16(buf, 2 + (desc1 ? 13 : 0) + (desc2 ? 13 : 0));
 	wpabuf_put_u8(buf, noa_index);
 	wpabuf_put_u8(buf, (opp_ps ? 0x80 : 0) | (ctwindow & 0x7f));
 	p2p_buf_add_noa_desc(buf, desc1);
 	p2p_buf_add_noa_desc(buf, desc2);
 	wpa_printf(MSG_DEBUG, "P2P: * Notice of Absence");
 }


 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
 				   u16 interval)
 {
 	/* Extended Listen Timing */
 	wpabuf_put_u8(buf, P2P_ATTR_EXT_LISTEN_TIMING);
 	wpabuf_put_le16(buf, 4);
 	wpabuf_put_le16(buf, period);
 	wpabuf_put_le16(buf, interval);
 	wpa_printf(MSG_DEBUG, "P2P: * Extended Listen Timing (period %u msec  "
 		   "interval %u msec)", period, interval);
 }


 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p)
 {
 	/* P2P Interface */
 	wpabuf_put_u8(buf, P2P_ATTR_INTERFACE);
 	wpabuf_put_le16(buf, ETH_ALEN + 1 + ETH_ALEN);
 	/* P2P Device address */
 	wpabuf_put_data(buf, p2p->cfg->dev_addr, ETH_ALEN);
 	/*
 	 * FIX: Fetch interface address list from driver. Do not include
 	 * the P2P Device address if it is never used as interface address.
 	 */
 	/* P2P Interface Address Count */
 	wpabuf_put_u8(buf, 1);
 	wpabuf_put_data(buf, p2p->cfg->dev_addr, ETH_ALEN);
 }


 static void p2p_add_wps_string(struct wpabuf *buf, enum wps_attribute attr,
 			       const char *val)
 {
 	size_t len;

 	wpabuf_put_be16(buf, attr);
 	len = val ? os_strlen(val) : 0;
 #ifndef CONFIG_WPS_STRICT
 	if (len == 0) {
 		/*
 		 * Some deployed WPS implementations fail to parse zeor-length
 		 * attributes. As a workaround, send a space character if the
 		 * device attribute string is empty.
 		 */
 		wpabuf_put_be16(buf, 1);
 		wpabuf_put_u8(buf, ' ');
 		return;
 	}
 #endif /* CONFIG_WPS_STRICT */
 	wpabuf_put_be16(buf, len);
 	if (val)
 		wpabuf_put_data(buf, val, len);
 }


 void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
 		      int all_attr)
 {
 	u8 *len;
 	int i;

 	wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
 	len = wpabuf_put(buf, 1);
 	wpabuf_put_be32(buf, WPS_DEV_OUI_WFA);

 	wps_build_version(buf);

 	if (all_attr) {
 		wpabuf_put_be16(buf, ATTR_WPS_STATE);
 		wpabuf_put_be16(buf, 1);
 		wpabuf_put_u8(buf, WPS_STATE_NOT_CONFIGURED);
 	}

 	if (pw_id >= 0) {
 		/* Device Password ID */
 		wpabuf_put_be16(buf, ATTR_DEV_PASSWORD_ID);
 		wpabuf_put_be16(buf, 2);
 		wpa_printf(MSG_DEBUG, "P2P: WPS IE Device Password ID: %d",
 			   pw_id);
 		wpabuf_put_be16(buf, pw_id);
 	}

 	if (all_attr) {
 		wpabuf_put_be16(buf, ATTR_RESPONSE_TYPE);
 		wpabuf_put_be16(buf, 1);
 		wpabuf_put_u8(buf, WPS_RESP_ENROLLEE_INFO);

 		wps_build_uuid_e(buf, p2p->cfg->uuid);
 		p2p_add_wps_string(buf, ATTR_MANUFACTURER,
 				   p2p->cfg->manufacturer);
 		p2p_add_wps_string(buf, ATTR_MODEL_NAME, p2p->cfg->model_name);
 		p2p_add_wps_string(buf, ATTR_MODEL_NUMBER,
 				   p2p->cfg->model_number);
 		p2p_add_wps_string(buf, ATTR_SERIAL_NUMBER,
 				   p2p->cfg->serial_number);

 		wpabuf_put_be16(buf, ATTR_PRIMARY_DEV_TYPE);
 		wpabuf_put_be16(buf, WPS_DEV_TYPE_LEN);
 		wpabuf_put_data(buf, p2p->cfg->pri_dev_type, WPS_DEV_TYPE_LEN);

 		p2p_add_wps_string(buf, ATTR_DEV_NAME, p2p->cfg->dev_name);

 		wpabuf_put_be16(buf, ATTR_CONFIG_METHODS);
 		wpabuf_put_be16(buf, 2);
 		wpabuf_put_be16(buf, p2p->cfg->config_methods);
 	}

 	wps_build_wfa_ext(buf, 0, NULL, 0);

 	if (all_attr && p2p->cfg->num_sec_dev_types) {
 		wpabuf_put_be16(buf, ATTR_SECONDARY_DEV_TYPE_LIST);
 		wpabuf_put_be16(buf, WPS_DEV_TYPE_LEN *
 				p2p->cfg->num_sec_dev_types);
 		wpabuf_put_data(buf, p2p->cfg->sec_dev_type,
 				WPS_DEV_TYPE_LEN *
 				p2p->cfg->num_sec_dev_types);
 	}

 	/* Add the WPS vendor extensions */
 	for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 		if (p2p->wps_vendor_ext[i] == NULL)
 			break;
 		if (wpabuf_tailroom(buf) <
 		    4 + wpabuf_len(p2p->wps_vendor_ext[i]))
 			continue;
 		wpabuf_put_be16(buf, ATTR_VENDOR_EXT);
 		wpabuf_put_be16(buf, wpabuf_len(p2p->wps_vendor_ext[i]));
 		wpabuf_put_buf(buf, p2p->wps_vendor_ext[i]);
 	}

 	p2p_buf_update_ie_hdr(buf, len);
 }
	/*
	* P2P - IE builder
	* 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 "common/ieee802_11_defs.h"
	#include "wps/wps_i.h"
	#include "p2p_i.h"


	void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token)
	{
	wpabuf_put_u8(buf, WLAN_ACTION_VENDOR_SPECIFIC);
	wpabuf_put_be24(buf, OUI_WFA);
	wpabuf_put_u8(buf, P2P_OUI_TYPE);

	wpabuf_put_u8(buf, subtype); /* OUI Subtype */
	wpabuf_put_u8(buf, dialog_token);
	wpa_printf(MSG_DEBUG, "P2P: * Dialog Token: %d", dialog_token);
	}


	void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
	u8 dialog_token)
	{
	wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
	wpabuf_put_u8(buf, WLAN_PA_VENDOR_SPECIFIC);
	wpabuf_put_be24(buf, OUI_WFA);
	wpabuf_put_u8(buf, P2P_OUI_TYPE);

	wpabuf_put_u8(buf, subtype); /* OUI Subtype */
	wpabuf_put_u8(buf, dialog_token);
	wpa_printf(MSG_DEBUG, "P2P: * Dialog Token: %d", dialog_token);
	}


	u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf)
	{
	u8 *len;

	/* P2P IE header */
	wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
	len = wpabuf_put(buf, 1); /* IE length to be filled */
	wpabuf_put_be24(buf, OUI_WFA);
	wpabuf_put_u8(buf, P2P_OUI_TYPE);
	wpa_printf(MSG_DEBUG, "P2P: * P2P IE header");
	return len;
	}


	void p2p_buf_update_ie_hdr(struct wpabuf buf, u8 len)
	{
	/* Update P2P IE Length */
	len = (u8 ) wpabuf_put(buf, 0) - len - 1;
	}


	void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab)
	{
	/* P2P Capability */
	wpabuf_put_u8(buf, P2P_ATTR_CAPABILITY);
	wpabuf_put_le16(buf, 2);
	wpabuf_put_u8(buf, dev_capab); /* Device Capabilities */
	wpabuf_put_u8(buf, group_capab); /* Group Capabilities */
	wpa_printf(MSG_DEBUG, "P2P: * Capability dev=%02x group=%02x",
	dev_capab, group_capab);
	}


	void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent)
	{
	/* Group Owner Intent */
	wpabuf_put_u8(buf, P2P_ATTR_GROUP_OWNER_INTENT);
	wpabuf_put_le16(buf, 1);
	wpabuf_put_u8(buf, go_intent);
	wpa_printf(MSG_DEBUG, "P2P: * GO Intent: Intent %u Tie breaker %u",
	go_intent >> 1, go_intent & 0x01);
	}


	void p2p_buf_add_listen_channel(struct wpabuf buf, const char country,
	u8 reg_class, u8 channel)
	{
	/* Listen Channel */
	wpabuf_put_u8(buf, P2P_ATTR_LISTEN_CHANNEL);
	wpabuf_put_le16(buf, 5);
	wpabuf_put_data(buf, country, 3);
	wpabuf_put_u8(buf, reg_class); /* Regulatory Class */
	wpabuf_put_u8(buf, channel); /* Channel Number */
	wpa_printf(MSG_DEBUG, "P2P: * Listen Channel: Regulatory Class %u "
	"Channel %u", reg_class, channel);
	}


	void p2p_buf_add_operating_channel(struct wpabuf buf, const char country,
	u8 reg_class, u8 channel)
	{
	/* Operating Channel */
	wpabuf_put_u8(buf, P2P_ATTR_OPERATING_CHANNEL);
	wpabuf_put_le16(buf, 5);
	wpabuf_put_data(buf, country, 3);
	wpabuf_put_u8(buf, reg_class); /* Regulatory Class */
	wpabuf_put_u8(buf, channel); /* Channel Number */
	wpa_printf(MSG_DEBUG, "P2P: * Operating Channel: Regulatory Class %u "
	"Channel %u", reg_class, channel);
	}


	void p2p_buf_add_channel_list(struct wpabuf buf, const char country,
	struct p2p_channels *chan)
	{
	u8 *len;
	size_t i;

	/* Channel List */
	wpabuf_put_u8(buf, P2P_ATTR_CHANNEL_LIST);
	len = wpabuf_put(buf, 2); /* IE length to be filled */
	wpabuf_put_data(buf, country, 3); /* Country String */

	for (i = 0; i < chan->reg_classes; i++) {
	struct p2p_reg_class *c = &chan->reg_class[i];
	wpabuf_put_u8(buf, c->reg_class);
	wpabuf_put_u8(buf, c->channels);
	wpabuf_put_data(buf, c->channel, c->channels);
	}

	/* Update attribute length */
	WPA_PUT_LE16(len, (u8 *) wpabuf_put(buf, 0) - len - 2);
	wpa_hexdump(MSG_DEBUG, "P2P: * Channel List",
	len + 2, (u8 *) wpabuf_put(buf, 0) - len - 2);
	}

	void p2p_buf_add_status(struct wpabuf *buf, u8 status)
	{
	/* Status */
	wpabuf_put_u8(buf, P2P_ATTR_STATUS);
	wpabuf_put_le16(buf, 1);
	wpabuf_put_u8(buf, status);
	wpa_printf(MSG_DEBUG, "P2P: * Status: %d", status);
	}


	void p2p_buf_add_device_info(struct wpabuf buf, struct p2p_data p2p,
	struct p2p_device *peer)
	{
	u8 *len;
	u16 methods;
	size_t nlen, i;

	/* P2P Device Info */
	wpabuf_put_u8(buf, P2P_ATTR_DEVICE_INFO);
	len = wpabuf_put(buf, 2); /* IE length to be filled */

	/* P2P Device address */
	wpabuf_put_data(buf, p2p->cfg->dev_addr, ETH_ALEN);

	/* Config Methods */
	methods = 0;
	if (peer && peer->wps_method != WPS_NOT_READY) {
	if (peer->wps_method == WPS_PBC)
	methods \|= WPS_CONFIG_PUSHBUTTON;
	else if (peer->wps_method == WPS_PIN_DISPLAY \|\|
	peer->wps_method == WPS_PIN_KEYPAD)
	methods \|= WPS_CONFIG_DISPLAY \| WPS_CONFIG_KEYPAD;
	} else if (p2p->cfg->config_methods) {
	methods \|= p2p->cfg->config_methods &
	(WPS_CONFIG_PUSHBUTTON \| WPS_CONFIG_DISPLAY \|
	WPS_CONFIG_KEYPAD);
	} else {
	methods \|= WPS_CONFIG_PUSHBUTTON;
	methods \|= WPS_CONFIG_DISPLAY \| WPS_CONFIG_KEYPAD;
	}
	wpabuf_put_be16(buf, methods);

	/* Primary Device Type */
	wpabuf_put_data(buf, p2p->cfg->pri_dev_type,
	sizeof(p2p->cfg->pri_dev_type));

	/* Number of Secondary Device Types */
	wpabuf_put_u8(buf, p2p->cfg->num_sec_dev_types);

	/* Secondary Device Type List */
	for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
	wpabuf_put_data(buf, p2p->cfg->sec_dev_type[i],
	WPS_DEV_TYPE_LEN);

	/* Device Name */
	nlen = p2p->cfg->dev_name ? os_strlen(p2p->cfg->dev_name) : 0;
	wpabuf_put_be16(buf, ATTR_DEV_NAME);
	wpabuf_put_be16(buf, nlen);
	wpabuf_put_data(buf, p2p->cfg->dev_name, nlen);

	/* Update attribute length */
	WPA_PUT_LE16(len, (u8 *) wpabuf_put(buf, 0) - len - 2);
	wpa_printf(MSG_DEBUG, "P2P: * Device Info");
	}


	void p2p_buf_add_device_id(struct wpabuf buf, const u8 dev_addr)
	{
	/* P2P Device ID */
	wpabuf_put_u8(buf, P2P_ATTR_DEVICE_ID);
	wpabuf_put_le16(buf, ETH_ALEN);
	wpabuf_put_data(buf, dev_addr, ETH_ALEN);
	wpa_printf(MSG_DEBUG, "P2P: * Device ID: " MACSTR, MAC2STR(dev_addr));
	}


	void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
	u8 client_timeout)
	{
	/* Configuration Timeout */
	wpabuf_put_u8(buf, P2P_ATTR_CONFIGURATION_TIMEOUT);
	wpabuf_put_le16(buf, 2);
	wpabuf_put_u8(buf, go_timeout);
	wpabuf_put_u8(buf, client_timeout);
	wpa_printf(MSG_DEBUG, "P2P: * Configuration Timeout: GO %d (*10ms) "
	"client %d (*10ms)", go_timeout, client_timeout);
	}


	void p2p_buf_add_intended_addr(struct wpabuf buf, const u8 interface_addr)
	{
	/* Intended P2P Interface Address */
	wpabuf_put_u8(buf, P2P_ATTR_INTENDED_INTERFACE_ADDR);
	wpabuf_put_le16(buf, ETH_ALEN);
	wpabuf_put_data(buf, interface_addr, ETH_ALEN);
	wpa_printf(MSG_DEBUG, "P2P: * Intended P2P Interface Address " MACSTR,
	MAC2STR(interface_addr));
	}


	void p2p_buf_add_group_bssid(struct wpabuf buf, const u8 bssid)
	{
	/* P2P Group BSSID */
	wpabuf_put_u8(buf, P2P_ATTR_GROUP_BSSID);
	wpabuf_put_le16(buf, ETH_ALEN);
	wpabuf_put_data(buf, bssid, ETH_ALEN);
	wpa_printf(MSG_DEBUG, "P2P: * P2P Group BSSID " MACSTR,
	MAC2STR(bssid));
	}


	void p2p_buf_add_group_id(struct wpabuf buf, const u8 dev_addr,
	const u8 *ssid, size_t ssid_len)
	{
	/* P2P Group ID */
	wpabuf_put_u8(buf, P2P_ATTR_GROUP_ID);
	wpabuf_put_le16(buf, ETH_ALEN + ssid_len);
	wpabuf_put_data(buf, dev_addr, ETH_ALEN);
	wpabuf_put_data(buf, ssid, ssid_len);
	wpa_printf(MSG_DEBUG, "P2P: * P2P Group ID " MACSTR,
	MAC2STR(dev_addr));
	}


	void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags)
	{
	/* Invitation Flags */
	wpabuf_put_u8(buf, P2P_ATTR_INVITATION_FLAGS);
	wpabuf_put_le16(buf, 1);
	wpabuf_put_u8(buf, flags);
	wpa_printf(MSG_DEBUG, "P2P: * Invitation Flags: bitmap 0x%x", flags);
	}


	static void p2p_buf_add_noa_desc(struct wpabuf buf, struct p2p_noa_desc desc)
	{
	if (desc == NULL)
	return;

	wpabuf_put_u8(buf, desc->count_type);
	wpabuf_put_le32(buf, desc->duration);
	wpabuf_put_le32(buf, desc->interval);
	wpabuf_put_le32(buf, desc->start_time);
	}


	void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
	struct p2p_noa_desc desc1, struct p2p_noa_desc desc2)
	{
	/* Notice of Absence */
	wpabuf_put_u8(buf, P2P_ATTR_NOTICE_OF_ABSENCE);
	wpabuf_put_le16(buf, 2 + (desc1 ? 13 : 0) + (desc2 ? 13 : 0));
	wpabuf_put_u8(buf, noa_index);
	wpabuf_put_u8(buf, (opp_ps ? 0x80 : 0) \| (ctwindow & 0x7f));
	p2p_buf_add_noa_desc(buf, desc1);
	p2p_buf_add_noa_desc(buf, desc2);
	wpa_printf(MSG_DEBUG, "P2P: * Notice of Absence");
	}


	void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
	u16 interval)
	{
	/* Extended Listen Timing */
	wpabuf_put_u8(buf, P2P_ATTR_EXT_LISTEN_TIMING);
	wpabuf_put_le16(buf, 4);
	wpabuf_put_le16(buf, period);
	wpabuf_put_le16(buf, interval);
	wpa_printf(MSG_DEBUG, "P2P: * Extended Listen Timing (period %u msec "
	"interval %u msec)", period, interval);
	}


	void p2p_buf_add_p2p_interface(struct wpabuf buf, struct p2p_data p2p)
	{
	/* P2P Interface */
	wpabuf_put_u8(buf, P2P_ATTR_INTERFACE);
	wpabuf_put_le16(buf, ETH_ALEN + 1 + ETH_ALEN);
	/* P2P Device address */
	wpabuf_put_data(buf, p2p->cfg->dev_addr, ETH_ALEN);
	/*
	* FIX: Fetch interface address list from driver. Do not include
	* the P2P Device address if it is never used as interface address.
	*/
	/* P2P Interface Address Count */
	wpabuf_put_u8(buf, 1);
	wpabuf_put_data(buf, p2p->cfg->dev_addr, ETH_ALEN);
	}


	static void p2p_add_wps_string(struct wpabuf *buf, enum wps_attribute attr,
	const char *val)
	{
	size_t len;

	wpabuf_put_be16(buf, attr);
	len = val ? os_strlen(val) : 0;
	#ifndef CONFIG_WPS_STRICT
	if (len == 0) {
	/*
	* Some deployed WPS implementations fail to parse zeor-length
	* attributes. As a workaround, send a space character if the
	* device attribute string is empty.
	*/
	wpabuf_put_be16(buf, 1);
	wpabuf_put_u8(buf, ' ');
	return;
	}
	#endif /* CONFIG_WPS_STRICT */
	wpabuf_put_be16(buf, len);
	if (val)
	wpabuf_put_data(buf, val, len);
	}


	void p2p_build_wps_ie(struct p2p_data p2p, struct wpabuf buf, int pw_id,
	int all_attr)
	{
	u8 *len;
	int i;

	wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
	len = wpabuf_put(buf, 1);
	wpabuf_put_be32(buf, WPS_DEV_OUI_WFA);

	wps_build_version(buf);

	if (all_attr) {
	wpabuf_put_be16(buf, ATTR_WPS_STATE);
	wpabuf_put_be16(buf, 1);
	wpabuf_put_u8(buf, WPS_STATE_NOT_CONFIGURED);
	}

	if (pw_id >= 0) {
	/* Device Password ID */
	wpabuf_put_be16(buf, ATTR_DEV_PASSWORD_ID);
	wpabuf_put_be16(buf, 2);
	wpa_printf(MSG_DEBUG, "P2P: WPS IE Device Password ID: %d",
	pw_id);
	wpabuf_put_be16(buf, pw_id);
	}

	if (all_attr) {
	wpabuf_put_be16(buf, ATTR_RESPONSE_TYPE);
	wpabuf_put_be16(buf, 1);
	wpabuf_put_u8(buf, WPS_RESP_ENROLLEE_INFO);

	wps_build_uuid_e(buf, p2p->cfg->uuid);
	p2p_add_wps_string(buf, ATTR_MANUFACTURER,
	p2p->cfg->manufacturer);
	p2p_add_wps_string(buf, ATTR_MODEL_NAME, p2p->cfg->model_name);
	p2p_add_wps_string(buf, ATTR_MODEL_NUMBER,
	p2p->cfg->model_number);
	p2p_add_wps_string(buf, ATTR_SERIAL_NUMBER,
	p2p->cfg->serial_number);

	wpabuf_put_be16(buf, ATTR_PRIMARY_DEV_TYPE);
	wpabuf_put_be16(buf, WPS_DEV_TYPE_LEN);
	wpabuf_put_data(buf, p2p->cfg->pri_dev_type, WPS_DEV_TYPE_LEN);

	p2p_add_wps_string(buf, ATTR_DEV_NAME, p2p->cfg->dev_name);

	wpabuf_put_be16(buf, ATTR_CONFIG_METHODS);
	wpabuf_put_be16(buf, 2);
	wpabuf_put_be16(buf, p2p->cfg->config_methods);
	}

	wps_build_wfa_ext(buf, 0, NULL, 0);

	if (all_attr && p2p->cfg->num_sec_dev_types) {
	wpabuf_put_be16(buf, ATTR_SECONDARY_DEV_TYPE_LIST);
	wpabuf_put_be16(buf, WPS_DEV_TYPE_LEN *
	p2p->cfg->num_sec_dev_types);
	wpabuf_put_data(buf, p2p->cfg->sec_dev_type,
	WPS_DEV_TYPE_LEN *
	p2p->cfg->num_sec_dev_types);
	}

	/* Add the WPS vendor extensions */
	for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
	if (p2p->wps_vendor_ext[i] == NULL)
	break;
	if (wpabuf_tailroom(buf) <
	4 + wpabuf_len(p2p->wps_vendor_ext[i]))
	continue;
	wpabuf_put_be16(buf, ATTR_VENDOR_EXT);
	wpabuf_put_be16(buf, wpabuf_len(p2p->wps_vendor_ext[i]));
	wpabuf_put_buf(buf, p2p->wps_vendor_ext[i]);
	}

	p2p_buf_update_ie_hdr(buf, len);
	}