icmp.h
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上传日期:2013-02-24
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- /*
- * INET An implementation of the TCP/IP protocol suite for the LINUX
- * operating system. INET is implemented using the BSD Socket
- * interface as the means of communication with the user level.
- *
- * Definitions for the ICMP protocol.
- *
- * Version: @(#)icmp.h 1.0.3 04/28/93
- *
- * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
- #ifndef _LINUX_ICMP_H
- #define _LINUX_ICMP_H
- #define ICMP_ECHOREPLY 0 /* Echo Reply */
- #define ICMP_DEST_UNREACH 3 /* Destination Unreachable */
- #define ICMP_SOURCE_QUENCH 4 /* Source Quench */
- #define ICMP_REDIRECT 5 /* Redirect (change route) */
- #define ICMP_ECHO 8 /* Echo Request */
- #define ICMP_TIME_EXCEEDED 11 /* Time Exceeded */
- #define ICMP_PARAMETERPROB 12 /* Parameter Problem */
- #define ICMP_TIMESTAMP 13 /* Timestamp Request */
- #define ICMP_TIMESTAMPREPLY 14 /* Timestamp Reply */
- #define ICMP_INFO_REQUEST 15 /* Information Request */
- #define ICMP_INFO_REPLY 16 /* Information Reply */
- #define ICMP_ADDRESS 17 /* Address Mask Request */
- #define ICMP_ADDRESSREPLY 18 /* Address Mask Reply */
- #define NR_ICMP_TYPES 18
- /* Codes for UNREACH. */
- #define ICMP_NET_UNREACH 0 /* Network Unreachable */
- #define ICMP_HOST_UNREACH 1 /* Host Unreachable */
- #define ICMP_PROT_UNREACH 2 /* Protocol Unreachable */
- #define ICMP_PORT_UNREACH 3 /* Port Unreachable */
- #define ICMP_FRAG_NEEDED 4 /* Fragmentation Needed/DF set */
- #define ICMP_SR_FAILED 5 /* Source Route failed */
- #define ICMP_NET_UNKNOWN 6
- #define ICMP_HOST_UNKNOWN 7
- #define ICMP_HOST_ISOLATED 8
- #define ICMP_NET_ANO 9
- #define ICMP_HOST_ANO 10
- #define ICMP_NET_UNR_TOS 11
- #define ICMP_HOST_UNR_TOS 12
- #define ICMP_PKT_FILTERED 13 /* Packet filtered */
- #define ICMP_PREC_VIOLATION 14 /* Precedence violation */
- #define ICMP_PREC_CUTOFF 15 /* Precedence cut off */
- #define NR_ICMP_UNREACH 15 /* instead of hardcoding immediate value */
- /* Codes for REDIRECT. */
- #define ICMP_REDIR_NET 0 /* Redirect Net */
- #define ICMP_REDIR_HOST 1 /* Redirect Host */
- #define ICMP_REDIR_NETTOS 2 /* Redirect Net for TOS */
- #define ICMP_REDIR_HOSTTOS 3 /* Redirect Host for TOS */
- /* Codes for TIME_EXCEEDED. */
- #define ICMP_EXC_TTL 0 /* TTL count exceeded */
- #define ICMP_EXC_FRAGTIME 1 /* Fragment Reass time exceeded */
- struct icmphdr {
- __u8 type;
- __u8 code;
- __u16 checksum;
- union {
- struct {
- __u16 id;
- __u16 sequence;
- } echo;
- __u32 gateway;
- struct {
- __u16 __unused;
- __u16 mtu;
- } frag;
- } un;
- };
- /*
- * constants for (set|get)sockopt
- */
- #define ICMP_FILTER 1
- struct icmp_filter {
- __u32 data;
- };
- #endif /* _LINUX_ICMP_H */