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/*

 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.

 * All rights reserved.

 *

 * 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. The name of the author may not be used to endorse or promote products

 *    derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.

 *

 * This file is part of the lwIP TCP/IP stack.

 *

 * Author: Adam Dunkels <adam@sics.se>

 *

 */

#ifndef __LWIP_API_H__

#define __LWIP_API_H__

#include "lwip/opt.h"

#include "lwip/pbuf.h"

#include "lwip/sys.h"

#include "lwip/ip.h"

#include "lwip/raw.h"

#include "lwip/udp.h"

#include "lwip/tcp.h"

#include "lwip/err.h"

#define NETCONN_NOCOPY 0x00

#define NETCONN_COPY   0x01

enum netconn_type {

  NETCONN_TCP,

  NETCONN_UDP,

  NETCONN_UDPLITE,

  NETCONN_UDPNOCHKSUM,

  NETCONN_RAW

};

enum netconn_state {

  NETCONN_NONE,

  NETCONN_WRITE,

  NETCONN_ACCEPT,

  NETCONN_RECV,

  NETCONN_CONNECT,

  NETCONN_CLOSE

};

enum netconn_evt {

  NETCONN_EVT_RCVPLUS,

  NETCONN_EVT_RCVMINUS,

  NETCONN_EVT_SENDPLUS,

  NETCONN_EVT_SENDMINUS

};

struct netbuf {

  struct pbuf *p, *ptr;

  struct ip_addr *fromaddr;

  u16_t fromport;

  err_t err;

};

struct netconn {

  enum netconn_type type;

  enum netconn_state state;

  union {

    struct tcp_pcb *tcp;

    struct udp_pcb *udp;

    struct raw_pcb *raw;

  } pcb;

  err_t err;

  sys_mbox_t mbox;

  sys_mbox_t recvmbox;

  sys_mbox_t acceptmbox;

  sys_sem_t sem;

  int socket;

  u16_t recv_avail;

  void (* callback)(struct netconn *, enum netconn_evt, u16_t len);

};

/* Network buffer functions: */

struct netbuf *   netbuf_new      (void);

void              netbuf_delete   (struct netbuf *buf);

void *            netbuf_alloc    (struct netbuf *buf, u16_t size);

void              netbuf_free     (struct netbuf *buf);

void              netbuf_ref      (struct netbuf *buf,

           void *dataptr, u16_t size);

void              netbuf_chain    (struct netbuf *head,

           struct netbuf *tail);

u16_t             netbuf_len      (struct netbuf *buf);

err_t             netbuf_data     (struct netbuf *buf,

           void **dataptr, u16_t *len);

s8_t              netbuf_next     (struct netbuf *buf);

void              netbuf_first    (struct netbuf *buf);

void              netbuf_copy     (struct netbuf *buf,

           void *dataptr, u16_t len);

void              netbuf_copy_partial(struct netbuf *buf, void *dataptr,

              u16_t len, u16_t offset);

struct ip_addr *  netbuf_fromaddr (struct netbuf *buf);

u16_t             netbuf_fromport (struct netbuf *buf);

/* Network connection functions: */

struct netconn *  netconn_new     (enum netconn_type type);

struct

netconn *netconn_new_with_callback(enum netconn_type t,

                                   void (*callback)(struct netconn *, enum netconn_evt, u16_t len));

struct

netconn *netconn_new_with_proto_and_callback(enum netconn_type t, u16_t proto,

                                   void (*callback)(struct netconn *, enum netconn_evt, u16_t len));

err_t             netconn_delete  (struct netconn *conn);

enum netconn_type netconn_type    (struct netconn *conn);

err_t             netconn_peer    (struct netconn *conn,

           struct ip_addr *addr,

           u16_t *port);

err_t             netconn_addr    (struct netconn *conn,

           struct ip_addr **addr,

           u16_t *port);

err_t             netconn_bind    (struct netconn *conn,

           struct ip_addr *addr,

           u16_t port);

err_t             netconn_connect (struct netconn *conn,

           struct ip_addr *addr,

           u16_t port);

err_t             netconn_disconnect (struct netconn *conn);

err_t             netconn_listen  (struct netconn *conn);

struct netconn *  netconn_accept  (struct netconn *conn);

struct netbuf *   netconn_recv    (struct netconn *conn);

err_t             netconn_send    (struct netconn *conn,

           struct netbuf *buf);

err_t             netconn_write   (struct netconn *conn,

           void *dataptr, u16_t size,

           u8_t copy);

err_t             netconn_close   (struct netconn *conn);

err_t             netconn_err     (struct netconn *conn);

#endif /* __LWIP_API_H__ */