1 /*
2  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without modification,
6  * are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice,
9  *    this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright notice,
11  *    this list of conditions and the following disclaimer in the documentation
12  *    and/or other materials provided with the distribution.
13  * 3. The name of the author may not be used to endorse or promote products
14  *    derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
21  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
25  * OF SUCH DAMAGE.
26  *
27  * This file is part of the lwIP TCP/IP stack.
28  *
29  * Author: Adam Dunkels <adam@sics.se>
30  *
31  */
32 #ifndef __LWIP_ERR_H__
33 #define __LWIP_ERR_H__
34 
35 #include "lwip/opt.h"
36 #include "lwip/arch.h"
37 
38 #ifdef __cplusplus
39 extern "C" {
40 #endif
41 
42 /** Define LWIP_ERR_T in cc.h if you want to use
43  *  a different type for your platform (must be signed). */
44 #ifdef LWIP_ERR_T
45 typedef LWIP_ERR_T err_t;
46 #else /* LWIP_ERR_T */
47 typedef s8_t err_t;
48 #endif /* LWIP_ERR_T*/
49 
50 /* Definitions for error constants. */
51 
52 #define ERR_OK          0    /* No error, everything OK. */
53 #define ERR_MEM        -1    /* Out of memory error.     */
54 #define ERR_BUF        -2    /* Buffer error.            */
55 #define ERR_TIMEOUT    -3    /* Timeout.                 */
56 #define ERR_RTE        -4    /* Routing problem.         */
57 #define ERR_INPROGRESS -5    /* Operation in progress    */
58 #define ERR_VAL        -6    /* Illegal value.           */
59 #define ERR_WOULDBLOCK -7    /* Operation would block.   */
60 #define ERR_USE        -8    /* Address in use.          */
61 #define ERR_ISCONN     -9    /* Already connected.       */
62 
63 #define ERR_IS_FATAL(e) ((e) < ERR_ISCONN)
64 
65 #define ERR_ABRT       -10   /* Connection aborted.      */
66 #define ERR_RST        -11   /* Connection reset.        */
67 #define ERR_CLSD       -12   /* Connection closed.       */
68 #define ERR_CONN       -13   /* Not connected.           */
69 
70 #define ERR_ARG        -14   /* Illegal argument.        */
71 
72 #define ERR_IF         -15   /* Low-level netif error    */
73 
74 
75 #ifdef LWIP_DEBUG
76 extern const char *lwip_strerr(err_t err);
77 #else
78 #define lwip_strerr(x) ""
79 #endif /* LWIP_DEBUG */
80 
81 #ifdef __cplusplus
82 }
83 #endif
84 
85 #endif /* __LWIP_ERR_H__ */
86