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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 #include "lwip/pbuf.h"
37 #include "lwip/ip_addr.h"
38 #include "lwip/netif.h"
39 
40 #ifdef __cplusplus
41 extern "C" {
42 #endif
43 
44 #define ICMP_ER 0 /* echo reply */
45 #define ICMP_DUR 3 /* destination unreachable */
46 #define ICMP_SQ 4 /* source quench */
47 #define ICMP_RD 5 /* redirect */
48 #define ICMP_ECHO 8 /* echo */
49 #define ICMP_TE 11 /* time exceeded */
50 #define ICMP_PP 12 /* parameter problem */
51 #define ICMP_TS 13 /* timestamp */
52 #define ICMP_TSR 14 /* timestamp reply */
53 #define ICMP_IRQ 15 /* information request */
54 #define ICMP_IR 16 /* information reply */
55 
57  ICMP_DUR_NET = 0, /* net unreachable */
58  ICMP_DUR_HOST = 1, /* host unreachable */
59  ICMP_DUR_PROTO = 2, /* protocol unreachable */
60  ICMP_DUR_PORT = 3, /* port unreachable */
61  ICMP_DUR_FRAG = 4, /* fragmentation needed and DF set */
62  ICMP_DUR_SR = 5 /* source route failed */
63 };
64 
66  ICMP_TE_TTL = 0, /* time to live exceeded in transit */
67  ICMP_TE_FRAG = 1 /* fragment reassembly time exceeded */
68 };
69 
70 #ifdef PACK_STRUCT_USE_INCLUDES
71 # include "arch/bpstruct.h"
72 #endif
73 
79 struct icmp_echo_hdr {
84  PACK_STRUCT_FIELD(u16_t seqno);
87 #ifdef PACK_STRUCT_USE_INCLUDES
88 # include "arch/epstruct.h"
89 #endif
90 
91 #define ICMPH_TYPE(hdr) ((hdr)->type)
92 #define ICMPH_CODE(hdr) ((hdr)->code)
93 
95 #define ICMPH_TYPE_SET(hdr, t) ((hdr)->type = (t))
96 #define ICMPH_CODE_SET(hdr, c) ((hdr)->code = (c))
97 
98 
99 #if LWIP_ICMP /* don't build if not configured for use in lwipopts.h */
100 
101 void icmp_input(struct pbuf *p, struct netif *inp);
102 void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t);
103 void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t);
104 
105 #endif /* LWIP_ICMP */
106 
107 #ifdef __cplusplus
108 }
109 #endif
110 
111 #endif /* __LWIP_ICMP_H__ */
icmp_dur_type
Definition: icmp.h:56
GLdouble GLdouble t
Definition: gl.h:2047
icmp_te_type
Definition: icmp.h:65
PACK_STRUCT_FIELD(u8_t type)
Definition: pbuf.h:79
PACK_STRUCT_BEGIN struct icmp_echo_hdr PACK_STRUCT_STRUCT
Definition: netif.h:136
#define PACK_STRUCT_BEGIN
Definition: arch.h:60
Definition: inflate.c:139
static u32_t chksum(void *dataptr, u16_t len)
Definition: inet6.c:55
unsigned char u8_t
Definition: cc.h:23
#define PACK_STRUCT_END
Definition: arch.h:64
unsigned short u16_t
Definition: cc.h:24
GLuint GLuint GLsizei GLenum type
Definition: gl.h:1545
GLfloat GLfloat p
Definition: glext.h:8902