/****************************************************************************
 * net/udp/udp.h
 *
 *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <gnutt@nuttx.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name NuttX nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

#ifndef __NET_UDP_UDP_H
#define __NET_UDP_UDP_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <sys/types.h>

#ifdef CONFIG_NET_UDP

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

/* Allocate a new TCP data callback */

#define udp_callback_alloc(conn)   devif_callback_alloc(&conn->list)
#define udp_callback_free(conn,cb) devif_callback_free(cb, &conn->list)

/****************************************************************************
 * Public Type Definitions
 ****************************************************************************/

/****************************************************************************
 * Public Data
 ****************************************************************************/

#ifdef __cplusplus
#  define EXTERN extern "C"
extern "C"
{
#else
#  define EXTERN extern
#endif

/****************************************************************************
 * Public Function Prototypes
 ****************************************************************************/

/* Defined in udp_conn.c ****************************************************/

struct udp_iphdr_s; /* Forward reference */
struct udp_conn_s; /* Forward reference */

void udp_initialize(void);
FAR struct udp_conn_s *udp_active(FAR struct udp_iphdr_s *buf);
FAR struct udp_conn_s *udp_nextconn(FAR struct udp_conn_s *conn);

/* Defined in udp_poll.c ****************************************************/

void udp_poll(FAR struct net_driver_s *dev, FAR struct udp_conn_s *conn);

/* Defined in udp_send.c ****************************************************/

void udp_send(FAR struct net_driver_s *dev, FAR struct udp_conn_s *conn);

/* Defined in udp_input.c ***************************************************/

int udp_input(FAR struct net_driver_s *dev);

/* Defined in udp_callback.c ************************************************/

uint16_t udp_callback(FAR struct net_driver_s *dev,
                      FAR struct udp_conn_s *conn, uint16_t flags);

#undef EXTERN
#ifdef __cplusplus
}
#endif

#endif /* CONFIG_NET_UDP */
#endif /* __NET_UDP_UDP_H */