include/linux/icmp.h

/* */
   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 _LINUX_ICMP_H
  18 #define _LINUX_ICMP_H
  19 
  20 #define ICMP_ECHOREPLY          0       /* Echo Reply                   */
  21 #define ICMP_DEST_UNREACH       3       /* Destination Unreachable      */
  22 #define ICMP_SOURCE_QUENCH      4       /* Source Quench                */
  23 #define ICMP_REDIRECT           5       /* Redirect (change route)      */
  24 #define ICMP_ECHO               8       /* Echo Request                 */
  25 #define ICMP_TIME_EXCEEDED      11      /* Time Exceeded                */
  26 #define ICMP_PARAMETERPROB      12      /* Parameter Problem            */
  27 #define ICMP_TIMESTAMP          13      /* Timestamp Request            */
  28 #define ICMP_TIMESTAMPREPLY     14      /* Timestamp Reply              */
  29 #define ICMP_INFO_REQUEST       15      /* Information Request          */
  30 #define ICMP_INFO_REPLY         16      /* Information Reply            */
  31 #define ICMP_ADDRESS            17      /* Address Mask Request         */
  32 #define ICMP_ADDRESSREPLY       18      /* Address Mask Reply           */
  33 
  34 
  35 /* Codes for UNREACH. */
  36 #define ICMP_NET_UNREACH        0       /* Network Unreachable          */
  37 #define ICMP_HOST_UNREACH       1       /* Host Unreachable             */
  38 #define ICMP_PROT_UNREACH       2       /* Protocol Unreachable         */
  39 #define ICMP_PORT_UNREACH       3       /* Port Unreachable             */
  40 #define ICMP_FRAG_NEEDED        4       /* Fragmentation Needed/DF set  */
  41 #define ICMP_SR_FAILED          5       /* Source Route failed          */
  42 #define ICMP_NET_UNKNOWN        6
  43 #define ICMP_HOST_UNKNOWN       7
  44 #define ICMP_HOST_ISOLATED      8
  45 #define ICMP_NET_ANO            9
  46 #define ICMP_HOST_ANO           10
  47 #define ICMP_NET_UNR_TOS        11
  48 #define ICMP_HOST_UNR_TOS       12
  49 
  50 /* Codes for REDIRECT. */
  51 #define ICMP_REDIR_NET          0       /* Redirect Net                 */
  52 #define ICMP_REDIR_HOST         1       /* Redirect Host                */
  53 #define ICMP_REDIR_NETTOS       2       /* Redirect Net for TOS         */
  54 #define ICMP_REDIR_HOSTTOS      3       /* Redirect Host for TOS        */
  55 
  56 /* Codes for TIME_EXCEEDED. */
  57 #define ICMP_EXC_TTL            0       /* TTL count exceeded           */
  58 #define ICMP_EXC_FRAGTIME       1       /* Fragment Reass time exceeded */
  59 
  60 
  61 struct icmphdr {
  62   unsigned char         type;
  63   unsigned char         code;
  64   unsigned short        checksum;
  65   union {
  66         struct {
  67                 unsigned short  id;
  68                 unsigned short  sequence;
  69         } echo;
  70         unsigned long gateway;
  71   } un;
  72 };
  73 
  74 
  75 struct icmp_err {
  76   int           errno;
  77   unsigned      fatal:1;
  78 };
  79 
  80 
  81 #endif  /* _LINUX_ICMP_H */
/* */
root/include/linux/icmp.h

INCLUDED FROM
