?? icmp.h
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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 *//* 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/* 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 { unsigned char type; unsigned char code; unsigned short checksum; union { struct { unsigned short id; unsigned short sequence; } echo; unsigned long gateway; } un;};struct icmp_err { int errno; unsigned fatal:1;};#endif /* _LINUX_ICMP_H */
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