headers/posix/netinet6/in6.h

   1 /*
   2  * Copyright 2006-2012 Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _NETINET6_IN6_H_
   6 #define _NETINET6_IN6_H_
   7
   8
   9 #include <sys/types.h>
  10 #include <stdint.h>
  11
  12
  13 struct in6_addr {
  14         uint8_t         s6_addr[16];
  15 };
  16
  17 /* IP Version 6 socket address. */
  18 struct sockaddr_in6 {
  19         uint8_t         sin6_len;
  20         uint8_t         sin6_family;
  21         uint16_t        sin6_port;
  22         uint32_t        sin6_flowinfo;
  23         struct in6_addr sin6_addr;
  24         uint32_t        sin6_scope_id;
  25 };
  26
  27
  28 #define IN6ADDR_ANY_INIT {{ \
  29         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  30         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}
  31 #define IN6ADDR_LOOPBACK_INIT {{ \
  32         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  33         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}
  34 #define IN6ADDR_NODELOCAL_ALLNODES_INIT {{ \
  35         0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  36         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}
  37 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT {{ \
  38         0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  39         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}
  40 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT {{ \
  41         0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  42         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}
  43
  44 extern const struct in6_addr in6addr_any;
  45 extern const struct in6_addr in6addr_loopback;
  46
  47
  48 struct ipv6_mreq {
  49         struct in6_addr ipv6mr_multiaddr;
  50         unsigned        ipv6mr_interface;
  51 };
  52
  53
  54 struct in6_pktinfo {
  55         struct in6_addr ipi6_addr;      /* src/dst IPv6 address */
  56         unsigned int    ipi6_ifindex;   /* send/recv interface index */
  57 };
  58
  59
  60 /* Non-standard helper defines (same as in FreeBSD, though) */
  61 #define __IPV6_ADDR_SCOPE_NODELOCAL                     0x01
  62 #define __IPV6_ADDR_SCOPE_INTFACELOCAL          0x01
  63 #define __IPV6_ADDR_SCOPE_LINKLOCAL                     0x02
  64 #define __IPV6_ADDR_SCOPE_SITELOCAL                     0x05
  65 #define __IPV6_ADDR_SCOPE_ORGLOCAL                      0x08
  66 #define __IPV6_ADDR_SCOPE_GLOBAL                        0x0e
  67
  68 #define __IPV6_ADDR_MC_SCOPE(a)                         ((a)->s6_addr[1] & 0x0f)
  69
  70
  71 #define IN6_IS_ADDR_UNSPECIFIED(a) \
  72         (!memcmp((a)->s6_addr, in6addr_any.s6_addr, sizeof(struct in6_addr)))
  73
  74 #define IN6_IS_ADDR_LOOPBACK(a) \
  75         (!memcmp((a)->s6_addr, in6addr_loopback.s6_addr, sizeof(struct in6_addr)))
  76
  77 #define IN6_IS_ADDR_MULTICAST(a) \
  78         ((a)->s6_addr[0] == 0xff)
  79
  80 #define IN6_IS_ADDR_LINKLOCAL(a) \
  81         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
  82
  83 #define IN6_IS_ADDR_SITELOCAL(a) \
  84         (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
  85
  86 #define IN6_IS_ADDR_V4MAPPED(a) \
  87         ((a)->s6_addr[0] == 0x00 && (a)->s6_addr[1] == 0x00 \
  88         && (a)->s6_addr[2] == 0x00 && (a)->s6_addr[3] == 0x00 \
  89         && (a)->s6_addr[4] == 0x00 && (a)->s6_addr[5] == 0x00 \
  90         && (a)->s6_addr[6] == 0x00 && (a)->s6_addr[9] == 0x00 \
  91         && (a)->s6_addr[8] == 0x00 && (a)->s6_addr[9] == 0x00 \
  92         && (a)->s6_addr[10] == 0xff && (a)->s6_addr[11] == 0xff)
  93
  94 #define IN6_IS_ADDR_V4COMPAT(a) \
  95         ((a)->s6_addr[0] == 0x00 && (a)->s6_addr[1] == 0x00 \
  96         && (a)->s6_addr[2] == 0x00 && (a)->s6_addr[3] == 0x00 \
  97         && (a)->s6_addr[4] == 0x00 && (a)->s6_addr[5] == 0x00 \
  98         && (a)->s6_addr[6] == 0x00 && (a)->s6_addr[9] == 0x00 \
  99         && (a)->s6_addr[8] == 0x00 && (a)->s6_addr[9] == 0x00 \
 100         && (a)->s6_addr[10] == 0x00 && (a)->s6_addr[11] == 0x01)
 101
 102 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
 103         (IN6_IS_ADDR_MULTICAST(a) && __IPV6_ADDR_MC_SCOPE(a) \
 104                 == __IPV6_ADDR_SCOPE_NODELOCAL)
 105
 106 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
 107         (IN6_IS_ADDR_MULTICAST(a) && __IPV6_ADDR_MC_SCOPE(a) \
 108                 == __IPV6_ADDR_SCOPE_LINKLOCAL)
 109
 110 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
 111         (IN6_IS_ADDR_MULTICAST(a) && __IPV6_ADDR_MC_SCOPE(a) \
 112                 == __IPV6_ADDR_SCOPE_SITELOCAL)
 113
 114 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
 115         (IN6_IS_ADDR_MULTICAST(a) && __IPV6_ADDR_MC_SCOPE(a) \
 116                 == __IPV6_ADDR_SCOPE_ORGLOCAL)
 117
 118 #define IN6_IS_ADDR_MC_GLOBAL(a) \
 119         (IN6_IS_ADDR_MULTICAST(a) && __IPV6_ADDR_MC_SCOPE(a) \
 120                 == __IPV6_ADDR_SCOPE_GLOBAL)
 121
 122 /* From RFC 2292 (Advanced Sockets API for IPv6) */
 123 #define IN6_ARE_ADDR_EQUAL(a, b) \
 124         (!memcmp((a)->s6_addr, (b)->s6_addr, sizeof(struct in6_addr)))
 125
 126 /* maximal length of the string representation of an IPv6 address */
 127 #define INET6_ADDRSTRLEN                                46
 128
 129
 130 #endif  /* _NETINET6_IN6_H_ */