projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
| 3 | * operating system. INET is implemented using the BSD Socket | |
| 4 | * interface as the means of communication with the user level. | |
| 5 | * | |
| 6 | * Definitions for the ICMP protocol. | |
| 7 | * | |
| 8 | * Version: @(#)icmp.h 1.0.3 04/28/93 | |
| 9 | * | |
| 10 | * Author: Fred N. van Kempen, <[email protected]> | |
| 11 | * | |
| 12 | * This program is free software; you can redistribute it and/or | |
| 13 | * modify it under the terms of the GNU General Public License | |
| 14 | * as published by the Free Software Foundation; either version | |
| 15 | * 2 of the License, or (at your option) any later version. | |
| 16 | */ | |
| 17 | #ifndef _LINUX_ICMP_H | |
| 18 | #define _LINUX_ICMP_H | |
| 19 | ||
| 20 | #include <linux/types.h> | |
| 21 | ||
| 22 | #define ICMP_ECHOREPLY 0 /* Echo Reply */ | |
| 23 | #define ICMP_DEST_UNREACH 3 /* Destination Unreachable */ | |
| 24 | #define ICMP_SOURCE_QUENCH 4 /* Source Quench */ | |
| 25 | #define ICMP_REDIRECT 5 /* Redirect (change route) */ | |
| 26 | #define ICMP_ECHO 8 /* Echo Request */ | |
| 27 | #define ICMP_TIME_EXCEEDED 11 /* Time Exceeded */ | |
| 28 | #define ICMP_PARAMETERPROB 12 /* Parameter Problem */ | |
| 29 | #define ICMP_TIMESTAMP 13 /* Timestamp Request */ | |
| 30 | #define ICMP_TIMESTAMPREPLY 14 /* Timestamp Reply */ | |
| 31 | #define ICMP_INFO_REQUEST 15 /* Information Request */ | |
| 32 | #define ICMP_INFO_REPLY 16 /* Information Reply */ | |
| 33 | #define ICMP_ADDRESS 17 /* Address Mask Request */ | |
| 34 | #define ICMP_ADDRESSREPLY 18 /* Address Mask Reply */ | |
| 35 | #define NR_ICMP_TYPES 18 | |
| 36 | ||
| 37 | ||
| 38 | /* Codes for UNREACH. */ | |
| 39 | #define ICMP_NET_UNREACH 0 /* Network Unreachable */ | |
| 40 | #define ICMP_HOST_UNREACH 1 /* Host Unreachable */ | |
| 41 | #define ICMP_PROT_UNREACH 2 /* Protocol Unreachable */ | |
| 42 | #define ICMP_PORT_UNREACH 3 /* Port Unreachable */ | |
| 43 | #define ICMP_FRAG_NEEDED 4 /* Fragmentation Needed/DF set */ | |
| 44 | #define ICMP_SR_FAILED 5 /* Source Route failed */ | |
| 45 | #define ICMP_NET_UNKNOWN 6 | |
| 46 | #define ICMP_HOST_UNKNOWN 7 | |
| 47 | #define ICMP_HOST_ISOLATED 8 | |
| 48 | #define ICMP_NET_ANO 9 | |
| 49 | #define ICMP_HOST_ANO 10 | |
| 50 | #define ICMP_NET_UNR_TOS 11 | |
| 51 | #define ICMP_HOST_UNR_TOS 12 | |
| 52 | #define ICMP_PKT_FILTERED 13 /* Packet filtered */ | |
| 53 | #define ICMP_PREC_VIOLATION 14 /* Precedence violation */ | |
| 54 | #define ICMP_PREC_CUTOFF 15 /* Precedence cut off */ | |
| 55 | #define NR_ICMP_UNREACH 15 /* instead of hardcoding immediate value */ | |
| 56 | ||
| 57 | /* Codes for REDIRECT. */ | |
| 58 | #define ICMP_REDIR_NET 0 /* Redirect Net */ | |
| 59 | #define ICMP_REDIR_HOST 1 /* Redirect Host */ | |
| 60 | #define ICMP_REDIR_NETTOS 2 /* Redirect Net for TOS */ | |
| 61 | #define ICMP_REDIR_HOSTTOS 3 /* Redirect Host for TOS */ | |
| 62 | ||
| 63 | /* Codes for TIME_EXCEEDED. */ | |
| 64 | #define ICMP_EXC_TTL 0 /* TTL count exceeded */ | |
| 65 | #define ICMP_EXC_FRAGTIME 1 /* Fragment Reass time exceeded */ | |
| 66 | ||
| 67 | ||
| 68 | struct icmphdr { | |
| 69 | __u8 type; | |
| 70 | __u8 code; | |
| 71 | __u16 checksum; | |
| 72 | union { | |
| 73 | struct { | |
| 74 | __u16 id; | |
| 75 | __u16 sequence; | |
| 76 | } echo; | |
| 77 | __u32 gateway; | |
| 78 | struct { | |
| 79 | __u16 __unused; | |
| 80 | __u16 mtu; | |
| 81 | } frag; | |
| 82 | } un; | |
| 83 | }; | |
| 84 | ||
| 85 | /* | |
| 86 | * constants for (set|get)sockopt | |
| 87 | */ | |
| 88 | ||
| 89 | #define ICMP_FILTER 1 | |
| 90 | ||
| 91 | struct icmp_filter { | |
| 92 | __u32 data; | |
| 93 | }; | |
| 94 | ||
| 95 | ||
| 96 | #endif /* _LINUX_ICMP_H */ |