include/linux/in6.h

   1 /*
   2  *      Types and definitions for AF_INET6
   3  *      Linux INET6 implementation
   4  *
   5  *      Authors:
   6  *      Pedro Roque             <roque@di.fc.ul.pt>
   7  *
   8  *      Sources:
   9  *      IPv6 Program Interfaces for BSD Systems
  10  *      <draft-ietf-ipngwg-bsd-api-05.txt>
  11  *
  12  *      Advanced Sockets API for IPv6
  13  *      <draft-stevens-advanced-api-00.txt>
  14  *
  15  *      This program is free software; you can redistribute it and/or
  16  *      modify it under the terms of the GNU General Public License
  17  *      as published by the Free Software Foundation; either version
  18  *      2 of the License, or (at your option) any later version.
  19  */
  20
  21 #ifndef _LINUX_IN6_H
  22 #define _LINUX_IN6_H
  23
  24 #include <linux/types.h>
  25
  26 /*
  27  *      IPv6 address structure
  28  */
  29
  30 struct in6_addr
  31 {
  32         union
  33         {
  34                 __u8            u6_addr8[16];
  35                 __u16           u6_addr16[8];
  36                 __u32           u6_addr32[4];
  37         } in6_u;
  38 #define s6_addr                 in6_u.u6_addr8
  39 #define s6_addr16               in6_u.u6_addr16
  40 #define s6_addr32               in6_u.u6_addr32
  41 };
  42
  43 struct sockaddr_in6 {
  44         unsigned short int      sin6_family;    /* AF_INET6 */
  45         __u16                   sin6_port;      /* Transport layer port # */
  46         __u32                   sin6_flowinfo;  /* IPv6 flow information */
  47         struct in6_addr         sin6_addr;      /* IPv6 address */
  48         __u32                   sin6_scope_id;  /* scope id (new in RFC2553) */
  49 };
  50
  51 struct ipv6_mreq {
  52         /* IPv6 multicast address of group */
  53         struct in6_addr ipv6mr_multiaddr;
  54
  55         /* local IPv6 address of interface */
  56         int             ipv6mr_ifindex;
  57 };
  58
  59 struct in6_flowlabel_req
  60 {
  61         struct in6_addr flr_dst;
  62         __u32   flr_label;
  63         __u8    flr_action;
  64         __u8    flr_share;
  65         __u16   flr_flags;
  66         __u16   flr_expires;
  67         __u16   flr_linger;
  68         __u32   __flr_pad;
  69         /* Options in format of IPV6_PKTOPTIONS */
  70 };
  71
  72 #define IPV6_FL_A_GET   0
  73 #define IPV6_FL_A_PUT   1
  74 #define IPV6_FL_A_RENEW 2
  75
  76 #define IPV6_FL_F_CREATE        1
  77 #define IPV6_FL_F_EXCL          2
  78
  79 #define IPV6_FL_S_NONE          0
  80 #define IPV6_FL_S_EXCL          1
  81 #define IPV6_FL_S_PROCESS       2
  82 #define IPV6_FL_S_USER          3
  83 #define IPV6_FL_S_ANY           255
  84
  85
  86 /*
  87  *      Bitmask constant declarations to help applications select out the
  88  *      flow label and priority fields.
  89  *
  90  *      Note that this are in host byte order while the flowinfo field of
  91  *      sockaddr_in6 is in network byte order.
  92  */
  93
  94 #define IPV6_FLOWINFO_FLOWLABEL         0x000fffff
  95 #define IPV6_FLOWINFO_PRIORITY          0x0ff00000
  96
  97 /* These defintions are obsolete */
  98 #define IPV6_PRIORITY_UNCHARACTERIZED   0x0000
  99 #define IPV6_PRIORITY_FILLER            0x0100
 100 #define IPV6_PRIORITY_UNATTENDED        0x0200
 101 #define IPV6_PRIORITY_RESERVED1         0x0300
 102 #define IPV6_PRIORITY_BULK              0x0400
 103 #define IPV6_PRIORITY_RESERVED2         0x0500
 104 #define IPV6_PRIORITY_INTERACTIVE       0x0600
 105 #define IPV6_PRIORITY_CONTROL           0x0700
 106 #define IPV6_PRIORITY_8                 0x0800
 107 #define IPV6_PRIORITY_9                 0x0900
 108 #define IPV6_PRIORITY_10                0x0a00
 109 #define IPV6_PRIORITY_11                0x0b00
 110 #define IPV6_PRIORITY_12                0x0c00
 111 #define IPV6_PRIORITY_13                0x0d00
 112 #define IPV6_PRIORITY_14                0x0e00
 113 #define IPV6_PRIORITY_15                0x0f00
 114
 115 /*
 116  *      IPV6 extension headers
 117  */
 118 #define IPPROTO_HOPOPTS         0       /* IPv6 hop-by-hop options      */
 119 #define IPPROTO_ROUTING         43      /* IPv6 routing header          */
 120 #define IPPROTO_FRAGMENT        44      /* IPv6 fragmentation header    */
 121 #define IPPROTO_ICMPV6          58      /* ICMPv6                       */
 122 #define IPPROTO_NONE            59      /* IPv6 no next header          */
 123 #define IPPROTO_DSTOPTS         60      /* IPv6 destination options     */
 124
 125 /*
 126  *      IPv6 TLV options.
 127  */
 128 #define IPV6_TLV_PAD0           0
 129 #define IPV6_TLV_PADN           1
 130 #define IPV6_TLV_ROUTERALERT    5
 131 #define IPV6_TLV_JUMBO          194
 132
 133 /*
 134  *      IPV6 socket options
 135  */
 136
 137 #define IPV6_ADDRFORM           1
 138 #define IPV6_PKTINFO            2
 139 #define IPV6_HOPOPTS            3
 140 #define IPV6_DSTOPTS            4
 141 #define IPV6_RTHDR              5
 142 #define IPV6_PKTOPTIONS         6
 143 #define IPV6_CHECKSUM           7
 144 #define IPV6_HOPLIMIT           8
 145 #define IPV6_NEXTHOP            9
 146 #define IPV6_AUTHHDR            10
 147 #define IPV6_FLOWINFO           11
 148
 149 #define IPV6_UNICAST_HOPS       16
 150 #define IPV6_MULTICAST_IF       17
 151 #define IPV6_MULTICAST_HOPS     18
 152 #define IPV6_MULTICAST_LOOP     19
 153 #define IPV6_ADD_MEMBERSHIP     20
 154 #define IPV6_DROP_MEMBERSHIP    21
 155 #define IPV6_ROUTER_ALERT       22
 156 #define IPV6_MTU_DISCOVER       23
 157 #define IPV6_MTU                24
 158 #define IPV6_RECVERR            25
 159
 160 /* IPV6_MTU_DISCOVER values */
 161 #define IPV6_PMTUDISC_DONT              0
 162 #define IPV6_PMTUDISC_WANT              1
 163 #define IPV6_PMTUDISC_DO                2
 164
 165 /* Flowlabel */
 166 #define IPV6_FLOWLABEL_MGR      32
 167 #define IPV6_FLOWINFO_SEND      33
 168
 169
 170 #endif