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icmp.h
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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_ICMP_H__
33 #define __LWIP_ICMP_H__
34 
35 #include "lwip/opt.h"
36 
37 #if LWIP_ICMP /* don't build if not configured for use in lwipopts.h */
38 
39 #include "lwip/pbuf.h"
40 #include "lwip/netif.h"
41 
42 #ifdef __cplusplus
43 extern "C" {
44 #endif
45 
46 #define ICMP6_DUR 1
47 #define ICMP6_TE 3
48 #define ICMP6_ECHO 128 /* echo */
49 #define ICMP6_ER 129 /* echo reply */
50 
51 
52 enum icmp_dur_type {
53  ICMP_DUR_NET = 0, /* net unreachable */
54  ICMP_DUR_HOST = 1, /* host unreachable */
55  ICMP_DUR_PROTO = 2, /* protocol unreachable */
56  ICMP_DUR_PORT = 3, /* port unreachable */
57  ICMP_DUR_FRAG = 4, /* fragmentation needed and DF set */
58  ICMP_DUR_SR = 5 /* source route failed */
59 };
60 
61 enum icmp_te_type {
62  ICMP_TE_TTL = 0, /* time to live exceeded in transit */
63  ICMP_TE_FRAG = 1 /* fragment reassembly time exceeded */
64 };
65 
66 void icmp_input(struct pbuf *p, struct netif *inp);
67 
68 void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t);
69 void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t);
70 
71 struct icmp_echo_hdr {
72  u8_t type;
73  u8_t icode;
74  u16_t chksum;
75  u16_t id;
76  u16_t seqno;
77 };
78 
79 struct icmp_dur_hdr {
80  u8_t type;
81  u8_t icode;
82  u16_t chksum;
83  u32_t unused;
84 };
85 
86 struct icmp_te_hdr {
87  u8_t type;
88  u8_t icode;
89  u16_t chksum;
90  u32_t unused;
91 };
92 
93 #ifdef __cplusplus
94 }
95 #endif
96 
97 #endif /* LWIP_ICMP */
98 
99 #endif /* __LWIP_ICMP_H__ */
100 
icmp_dur_type
Definition: icmp.h:56
GLdouble GLdouble t
Definition: gl.h:2047
GLuint GLuint GLsizei GLenum type
Definition: gl.h:1545
WORD unused[29]
Definition: crypt.c:1155
icmp_te_type
Definition: icmp.h:65
Definition: pbuf.h:79
unsigned long u32_t
Definition: cc.h:25
Definition: netif.h:136
static u32_t chksum(void *dataptr, u16_t len)
Definition: inet6.c:55
unsigned char u8_t
Definition: cc.h:23
GLenum GLuint id
Definition: glext.h:5579
unsigned short u16_t
Definition: cc.h:24
GLfloat GLfloat p
Definition: glext.h:8902