err.h

《嵌入式网络系统设计-基于Atmel ARM7 系列》这个本书的光盘资料

/*
 * 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 <[e-mail]>
 *
 */
#ifndef __LWIP_ERR_H__
#define __LWIP_ERR_H__

#include "lwip/opt.h"

#include "arch/cc.h"

typedef s8_t err_t;

/* Definitions for error constants. */

#define ERR_OK    0      /* No error, everything OK. */
#define ERR_MEM  -1      /* Out of memory error.     */
#define ERR_BUF  -2      /* Buffer error.            */


#define ERR_ABRT -3      /* Connection aborted.      */
#define ERR_RST  -4      /* Connection reset.        */
#define ERR_CLSD -5      /* Connection closed.       */
#define ERR_CONN -6      /* Not connected.           */

#define ERR_VAL  -7      /* Illegal value.           */

#define ERR_ARG  -8      /* Illegal argument.        */

#define ERR_RTE  -9      /* Routing problem.         */

#define ERR_USE  -10     /* Address in use.          */

#define ERR_IF   -11     /* Low-level netif error    */
#define ERR_ISCONN -12   /* Already connected.       */


#ifdef LWIP_DEBUG
extern char *lwip_strerr(err_t err);
#else
#define lwip_strerr(x) ""
#endif /* LWIP_DEBUG */
#endif /* __LWIP_ERR_H__ */