user/sendip/ipv6.h

   1 /* ipv6.h
   2  */
   3 #ifndef _SENDIP_IPV6_H
   4 #define _SENDIP_IPV6_H
   5
   6 /* Pseudo header used for checksumming ICMP, TCP, UDP etc
   7  */
   8 struct ipv6_pseudo_hdr {
   9         struct in6_addr source;
  10         struct in6_addr destination;
  11         u_int32_t ulp_length;
  12         u_int32_t  zero: 24,
  13                 nexthdr:  8;
  14 };
  15
  16 /* Header taken from glibc 2.2
  17  */
  18 typedef struct {
  19         union  {
  20                 struct ip6_hdrctl {
  21                         uint32_t ip6_un1_flow;   /* 24 bits of flow-ID */
  22                         uint16_t ip6_un1_plen;   /* payload length */
  23                         uint8_t  ip6_un1_nxt;    /* next header */
  24                         uint8_t  ip6_un1_hlim;   /* hop limit */
  25                 } ip6_un1;
  26                 uint8_t ip6_un2_vfc;       /* 4 bits version, 4 bits priority */
  27         } ip6_ctlun;
  28         struct in6_addr ip6_src;      /* source address */
  29         struct in6_addr ip6_dst;      /* destination address */
  30 } ipv6_header;
  31
  32 #define ip6_vfc   ip6_ctlun.ip6_un2_vfc
  33 #define ip6_flow  ip6_ctlun.ip6_un1.ip6_un1_flow
  34 #define ip6_plen  ip6_ctlun.ip6_un1.ip6_un1_plen
  35 #define ip6_nxt   ip6_ctlun.ip6_un1.ip6_un1_nxt
  36 #define ip6_hlim  ip6_ctlun.ip6_un1.ip6_un1_hlim
  37 #define ip6_hops  ip6_ctlun.ip6_un1.ip6_un1_hlim
  38
  39 /* Defines for which parts have been modified
  40  */
  41 #define IPV6_MOD_FLOW     1
  42 #define IPV6_MOD_VERSION  1<<1
  43 #define IPV6_MOD_PRIORITY 1<<2
  44 #define IPV6_MOD_PLEN     1<<3
  45 #define IPV6_MOD_HLIM     1<<4
  46 #define IPV6_MOD_NXT      1<<5
  47 #define IPV6_MOD_SRC      1<<6
  48 #define IPV6_MOD_DST      1<<7
  49
  50 /* Options
  51  */
  52 sendip_option ipv6_opts[] = {
  53         {"f",1,"IPv6 flow ID","32"},
  54         {"t",1,"IPv6 traffic class","0"},
  55         {"l",1,"IPv6 payload length","Correct"},
  56         {"n",1,"IPv6 next header","IPPROTO_NONE"},
  57         {"h",1,"IPv6 hop limit","32"},
  58         {"v",1,"IP version (you probably don't want to change this"},
  59         {"p",1,"IPv6 priority","0"},
  60         {"s",1,"IPv6 source address","::1"},
  61         {"d",1,"IPv6 destination address","Correct"}
  62 };
  63
  64 #endif  /* _SENDIP_IPV6_H */