/** @file
 @brief UDP data handler

 This is not to be included by the application.
 */

/*
 * Copyright (c) 2016 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef __UDP_H
#define __UDP_H

#include <stdint.h>

#include <net/net_core.h>
#include <net/net_ip.h>
#include <net/nbuf.h>

#include "connection.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @brief Register a callback to be called when UDP packet
 * is received corresponding to received packet.
 *
 * @param remote_addr Remote address of the connection end point.
 * @param local_addr Local address of the connection end point.
 * @param remote_port Remote port of the connection end point.
 * @param local_port Local port of the connection end point.
 * @param cb Callback to be called
 * @param user_data User data supplied by caller.
 * @param handle UDP handle that can be used when unregistering
 *
 * @return Return 0 if the registration succeed, <0 otherwise.
 */
static inline int net_udp_register(const struct sockaddr *remote_addr,
				   const struct sockaddr *local_addr,
				   uint16_t remote_port,
				   uint16_t local_port,
				   net_conn_cb_t cb,
				   void *user_data,
				   void **handle)
{
	return net_conn_register(IPPROTO_UDP, remote_addr, local_addr,
				 remote_port, local_port, cb, user_data,
				 handle);
}

/**
 * @brief Unregister UDP handler.
 *
 * @param handle Handle from registering.
 *
 * @return Return 0 if the unregistration succeed, <0 otherwise.
 */
static inline int net_udp_unregister(void *handle)
{
	return net_conn_unregister(handle);
}

#if defined(CONFIG_NET_UDP)
static inline void net_udp_init(void)
{
	return;
}
#else
#define net_udp_init(...)
#endif

#ifdef __cplusplus
}
#endif

#endif /* __UDP_H */