root/net/tcp/icmp.h

/* */

INCLUDED FROM

   1 /* Internet Control Message Protocol (ICMP) header file */
   2 
   3 
   4 #define ICMP_ECHOREPLY          0
   5 #define ICMP_DEST_UNREACH       3
   6 #define ICMP_SOURCE_QUENCH      4
   7 #define ICMP_REDIRECT           5
   8 #define ICMP_ECHO               8
   9 #define ICMP_TIME_EXCEEDED     11
  10 #define ICMP_PARAMETERPROB     12
  11 #define ICMP_TIMESTAMP         13
  12 #define ICMP_TIMESTAMPREPLY    14
  13 #define ICMP_INFO_REQUEST      15
  14 #define ICMP_INFO_REPLY        16
  15 
  16 
  17 /* used by unreachable. */
  18 
  19 #define ICMP_NET_UNREACH        0
  20 #define ICMP_HOST_UNREACH       1
  21 #define ICMP_PROT_UNREACH       2
  22 #define ICMP_PORT_UNREACH       3 /* lots of room for confusion. */
  23 #define ICMP_FRAG_NNEDED        4
  24 #define ICMP_SR_FAILED          5
  25 #define ICMP_NET_UNKNOWN        6
  26 #define ICMP_HOST_UNKNOWN       7
  27 #define ICMP_HOST_ISOLATED      8
  28 #define ICMP_NET_ANO            9
  29 #define ICMP_HOST_ANO          10
  30 #define ICMP_NET_UNR_TOS       11
  31 #define ICMP_HOST_UNR_TOS      12
  32 
  33 
  34 struct icmp_header
  35 {
  36         unsigned char type;
  37         unsigned char code;
  38         unsigned short checksum;
  39         union 
  40           {
  41              struct
  42                {
  43                   unsigned short id;
  44                   unsigned short sequence;
  45                } echo;
  46              unsigned long gateway;
  47           } un;
  48 };
  49 
  50 struct icmp_err 
  51 {
  52    int errno;
  53    unsigned fatal:1;
  54 };
  55 
  56 extern struct icmp_err icmp_err_convert[];
  57 
  58 int
  59 icmp_rcv(struct sk_buff *skb, struct device *dev, struct options *opt,
  60         unsigned long daddr, unsigned short len,
  61         unsigned long saddr, int redo, struct ip_protocol *protocol);
  62 
  63 void
  64 icmp_reply (struct sk_buff *skb_in,  int type, int code, struct device *dev);

/* */