include/netinet/ip6.h

   1 #ifndef _NETINET_IP6_H
   2 #define _NETINET_IP6_H
   3
   4 #ifdef __cplusplus
   5 extern "C" {
   6 #endif
   7
   8 #include <stdint.h>
   9 #include <netinet/in.h>
  10
  11 struct ip6_hdr {
  12         union {
  13                 struct ip6_hdrctl {
  14                         uint32_t ip6_un1_flow;
  15                         uint16_t ip6_un1_plen;
  16                         uint8_t  ip6_un1_nxt;
  17                         uint8_t  ip6_un1_hlim;
  18                 } ip6_un1;
  19                 uint8_t ip6_un2_vfc;
  20         } ip6_ctlun;
  21         struct in6_addr ip6_src;
  22         struct in6_addr ip6_dst;
  23 };
  24
  25 #define ip6_vfc   ip6_ctlun.ip6_un2_vfc
  26 #define ip6_flow  ip6_ctlun.ip6_un1.ip6_un1_flow
  27 #define ip6_plen  ip6_ctlun.ip6_un1.ip6_un1_plen
  28 #define ip6_nxt   ip6_ctlun.ip6_un1.ip6_un1_nxt
  29 #define ip6_hlim  ip6_ctlun.ip6_un1.ip6_un1_hlim
  30 #define ip6_hops  ip6_ctlun.ip6_un1.ip6_un1_hlim
  31
  32 struct ip6_ext {
  33         uint8_t  ip6e_nxt;
  34         uint8_t  ip6e_len;
  35 };
  36
  37 struct ip6_hbh {
  38         uint8_t  ip6h_nxt;
  39         uint8_t  ip6h_len;
  40 };
  41
  42 struct ip6_dest {
  43         uint8_t  ip6d_nxt;
  44         uint8_t  ip6d_len;
  45 };
  46
  47 struct ip6_rthdr {
  48         uint8_t  ip6r_nxt;
  49         uint8_t  ip6r_len;
  50         uint8_t  ip6r_type;
  51         uint8_t  ip6r_segleft;
  52 };
  53
  54 struct ip6_rthdr0 {
  55         uint8_t  ip6r0_nxt;
  56         uint8_t  ip6r0_len;
  57         uint8_t  ip6r0_type;
  58         uint8_t  ip6r0_segleft;
  59         uint8_t  ip6r0_reserved;
  60         uint8_t  ip6r0_slmap[3];
  61         struct in6_addr ip6r0_addr[];
  62 };
  63
  64 struct ip6_frag {
  65         uint8_t   ip6f_nxt;
  66         uint8_t   ip6f_reserved;
  67         uint16_t  ip6f_offlg;
  68         uint32_t  ip6f_ident;
  69 };
  70
  71 #if __BYTE_ORDER == __BIG_ENDIAN
  72 #define IP6F_OFF_MASK       0xfff8
  73 #define IP6F_RESERVED_MASK  0x0006
  74 #define IP6F_MORE_FRAG      0x0001
  75 #else
  76 #define IP6F_OFF_MASK       0xf8ff
  77 #define IP6F_RESERVED_MASK  0x0600
  78 #define IP6F_MORE_FRAG      0x0100
  79 #endif
  80
  81 struct ip6_opt {
  82         uint8_t  ip6o_type;
  83         uint8_t  ip6o_len;
  84 };
  85
  86 #define IP6OPT_TYPE(o)          ((o) & 0xc0)
  87 #define IP6OPT_TYPE_SKIP        0x00
  88 #define IP6OPT_TYPE_DISCARD     0x40
  89 #define IP6OPT_TYPE_FORCEICMP   0x80
  90 #define IP6OPT_TYPE_ICMP        0xc0
  91 #define IP6OPT_TYPE_MUTABLE     0x20
  92
  93 #define IP6OPT_PAD1     0
  94 #define IP6OPT_PADN     1
  95
  96 #define IP6OPT_JUMBO            0xc2
  97 #define IP6OPT_NSAP_ADDR        0xc3
  98 #define IP6OPT_TUNNEL_LIMIT     0x04
  99 #define IP6OPT_ROUTER_ALERT     0x05
 100
 101 struct ip6_opt_jumbo {
 102         uint8_t  ip6oj_type;
 103         uint8_t  ip6oj_len;
 104         uint8_t  ip6oj_jumbo_len[4];
 105 };
 106 #define IP6OPT_JUMBO_LEN        6
 107
 108 struct ip6_opt_nsap {
 109         uint8_t  ip6on_type;
 110         uint8_t  ip6on_len;
 111         uint8_t  ip6on_src_nsap_len;
 112         uint8_t  ip6on_dst_nsap_len;
 113 };
 114
 115 struct ip6_opt_tunnel {
 116         uint8_t  ip6ot_type;
 117         uint8_t  ip6ot_len;
 118         uint8_t  ip6ot_encap_limit;
 119 };
 120
 121 struct ip6_opt_router {
 122         uint8_t  ip6or_type;
 123         uint8_t  ip6or_len;
 124         uint8_t  ip6or_value[2];
 125 };
 126
 127 #if __BYTE_ORDER == __BIG_ENDIAN
 128 #define IP6_ALERT_MLD   0x0000
 129 #define IP6_ALERT_RSVP  0x0001
 130 #define IP6_ALERT_AN    0x0002
 131 #else
 132 #define IP6_ALERT_MLD   0x0000
 133 #define IP6_ALERT_RSVP  0x0100
 134 #define IP6_ALERT_AN    0x0200
 135 #endif
 136
 137 #ifdef __cplusplus
 138 }
 139 #endif
 140
 141 #endif