| David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 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, <waltje@uWalt.NL.Mugnet.ORG> |
| 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 _UAPI_LINUX_ICMP_H |
| 18 | #define _UAPI_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 | __sum16 checksum; |
| 72 | union { |
| 73 | struct { |
| 74 | __be16 id; |
| 75 | __be16 sequence; |
| 76 | } echo; |
| 77 | __be32 gateway; |
| 78 | struct { |
| 79 | __be16 __unused; |
| 80 | __be16 mtu; |
| 81 | } frag; |
| 82 | } un; |
| 83 | }; |
| 84 | |
| 85 | |
| 86 | /* |
| 87 | * constants for (set|get)sockopt |
| 88 | */ |
| 89 | |
| 90 | #define ICMP_FILTER 1 |
| 91 | |
| 92 | struct icmp_filter { |
| 93 | __u32 data; |
| 94 | }; |
| 95 | |
| 96 | |
| 97 | #endif /* _UAPI_LINUX_ICMP_H */ |