include/uapi/linux/ipv6.h

   1 #ifndef _UAPI_IPV6_H
   2 #define _UAPI_IPV6_H
   3
   4 #include <linux/types.h>
   5 #include <linux/in6.h>
   6 #include <asm/byteorder.h>
   7
   8 /* The latest drafts declared increase in minimal mtu up to 1280. */
   9
  10 #define IPV6_MIN_MTU    1280
  11
  12 /*
  13  *      Advanced API
  14  *      source interface/address selection, source routing, etc...
  15  *      *under construction*
  16  */
  17
  18 #if __UAPI_DEF_IN6_PKTINFO
  19 struct in6_pktinfo {
  20         struct in6_addr ipi6_addr;
  21         int             ipi6_ifindex;
  22 };
  23 #endif
  24
  25 #if __UAPI_DEF_IP6_MTUINFO
  26 struct ip6_mtuinfo {
  27         struct sockaddr_in6     ip6m_addr;
  28         __u32                   ip6m_mtu;
  29 };
  30 #endif
  31
  32 struct in6_ifreq {
  33         struct in6_addr ifr6_addr;
  34         __u32           ifr6_prefixlen;
  35         int             ifr6_ifindex;
  36 };
  37
  38 #define IPV6_SRCRT_STRICT       0x01    /* Deprecated; will be removed */
  39 #define IPV6_SRCRT_TYPE_0       0       /* Deprecated; will be removed */
  40 #define IPV6_SRCRT_TYPE_2       2       /* IPv6 type 2 Routing Header   */
  41
  42 /*
  43  *      routing header
  44  */
  45 struct ipv6_rt_hdr {
  46         __u8            nexthdr;
  47         __u8            hdrlen;
  48         __u8            type;
  49         __u8            segments_left;
  50
  51         /*
  52          *      type specific data
  53          *      variable length field
  54          */
  55 };
  56
  57
  58 struct ipv6_opt_hdr {
  59         __u8            nexthdr;
  60         __u8            hdrlen;
  61         /*
  62          * TLV encoded option data follows.
  63          */
  64 } __attribute__((packed));      /* required for some archs */
  65
  66 #define ipv6_destopt_hdr ipv6_opt_hdr
  67 #define ipv6_hopopt_hdr  ipv6_opt_hdr
  68
  69 /* Router Alert option values (RFC2711) */
  70 #define IPV6_OPT_ROUTERALERT_MLD        0x0000  /* MLD(RFC2710) */
  71
  72 /*
  73  *      routing header type 0 (used in cmsghdr struct)
  74  */
  75
  76 struct rt0_hdr {
  77         struct ipv6_rt_hdr      rt_hdr;
  78         __u32                   reserved;
  79         struct in6_addr         addr[0];
  80
  81 #define rt0_type                rt_hdr.type
  82 };
  83
  84 /*
  85  *      routing header type 2
  86  */
  87
  88 struct rt2_hdr {
  89         struct ipv6_rt_hdr      rt_hdr;
  90         __u32                   reserved;
  91         struct in6_addr         addr;
  92
  93 #define rt2_type                rt_hdr.type
  94 };
  95
  96 /*
  97  *      home address option in destination options header
  98  */
  99
 100 struct ipv6_destopt_hao {
 101         __u8                    type;
 102         __u8                    length;
 103         struct in6_addr         addr;
 104 } __attribute__((packed));
 105
 106 /*
 107  *      IPv6 fixed header
 108  *
 109  *      BEWARE, it is incorrect. The first 4 bits of flow_lbl
 110  *      are glued to priority now, forming "class".
 111  */
 112
 113 struct ipv6hdr {
 114 #if defined(__LITTLE_ENDIAN_BITFIELD)
 115         __u8                    priority:4,
 116                                 version:4;
 117 #elif defined(__BIG_ENDIAN_BITFIELD)
 118         __u8                    version:4,
 119                                 priority:4;
 120 #else
 121 #error  "Please fix <asm/byteorder.h>"
 122 #endif
 123         __u8                    flow_lbl[3];
 124
 125         __be16                  payload_len;
 126         __u8                    nexthdr;
 127         __u8                    hop_limit;
 128
 129         struct  in6_addr        saddr;
 130         struct  in6_addr        daddr;
 131 };
 132
 133
 134 /* index values for the variables in ipv6_devconf */
 135 enum {
 136         DEVCONF_FORWARDING = 0,
 137         DEVCONF_HOPLIMIT,
 138         DEVCONF_MTU6,
 139         DEVCONF_ACCEPT_RA,
 140         DEVCONF_ACCEPT_REDIRECTS,
 141         DEVCONF_AUTOCONF,
 142         DEVCONF_DAD_TRANSMITS,
 143         DEVCONF_RTR_SOLICITS,
 144         DEVCONF_RTR_SOLICIT_INTERVAL,
 145         DEVCONF_RTR_SOLICIT_DELAY,
 146         DEVCONF_USE_TEMPADDR,
 147         DEVCONF_TEMP_VALID_LFT,
 148         DEVCONF_TEMP_PREFERED_LFT,
 149         DEVCONF_REGEN_MAX_RETRY,
 150         DEVCONF_MAX_DESYNC_FACTOR,
 151         DEVCONF_MAX_ADDRESSES,
 152         DEVCONF_FORCE_MLD_VERSION,
 153         DEVCONF_ACCEPT_RA_DEFRTR,
 154         DEVCONF_ACCEPT_RA_PINFO,
 155         DEVCONF_ACCEPT_RA_RTR_PREF,
 156         DEVCONF_RTR_PROBE_INTERVAL,
 157         DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,
 158         DEVCONF_PROXY_NDP,
 159         DEVCONF_OPTIMISTIC_DAD,
 160         DEVCONF_ACCEPT_SOURCE_ROUTE,
 161         DEVCONF_MC_FORWARDING,
 162         DEVCONF_DISABLE_IPV6,
 163         DEVCONF_ACCEPT_DAD,
 164         DEVCONF_FORCE_TLLAO,
 165         DEVCONF_NDISC_NOTIFY,
 166         DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL,
 167         DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL,
 168         DEVCONF_SUPPRESS_FRAG_NDISC,
 169         DEVCONF_ACCEPT_RA_FROM_LOCAL,
 170         DEVCONF_USE_OPTIMISTIC,
 171         DEVCONF_MAX
 172 };
 173
 174
 175 #endif /* _UAPI_IPV6_H */