in6.h 6.1 KB

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  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. #ifndef _LINUX_IN6_H
  21. #define _LINUX_IN6_H
  22. #include <linux/types.h>
  23. /*
  24. * IPv6 address structure
  25. */
  26. struct in6_addr
  27. {
  28. union
  29. {
  30. __u8 u6_addr8[16];
  31. __be16 u6_addr16[8];
  32. __be32 u6_addr32[4];
  33. } in6_u;
  34. #define s6_addr in6_u.u6_addr8
  35. #define s6_addr16 in6_u.u6_addr16
  36. #define s6_addr32 in6_u.u6_addr32
  37. };
  38. /* IPv6 Wildcard Address (::) and Loopback Address (::1) defined in RFC2553
  39. * NOTE: Be aware the IN6ADDR_* constants and in6addr_* externals are defined
  40. * in network byte order, not in host byte order as are the IPv4 equivalents
  41. */
  42. #if 0
  43. extern const struct in6_addr in6addr_any;
  44. #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
  45. #endif
  46. extern const struct in6_addr in6addr_loopback;
  47. #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
  48. struct sockaddr_in6 {
  49. unsigned short int sin6_family; /* AF_INET6 */
  50. __be16 sin6_port; /* Transport layer port # */
  51. __be32 sin6_flowinfo; /* IPv6 flow information */
  52. struct in6_addr sin6_addr; /* IPv6 address */
  53. __u32 sin6_scope_id; /* scope id (new in RFC2553) */
  54. };
  55. struct ipv6_mreq {
  56. /* IPv6 multicast address of group */
  57. struct in6_addr ipv6mr_multiaddr;
  58. /* local IPv6 address of interface */
  59. int ipv6mr_ifindex;
  60. };
  61. #define ipv6mr_acaddr ipv6mr_multiaddr
  62. struct in6_flowlabel_req
  63. {
  64. struct in6_addr flr_dst;
  65. __be32 flr_label;
  66. __u8 flr_action;
  67. __u8 flr_share;
  68. __u16 flr_flags;
  69. __u16 flr_expires;
  70. __u16 flr_linger;
  71. __u32 __flr_pad;
  72. /* Options in format of IPV6_PKTOPTIONS */
  73. };
  74. #define IPV6_FL_A_GET 0
  75. #define IPV6_FL_A_PUT 1
  76. #define IPV6_FL_A_RENEW 2
  77. #define IPV6_FL_F_CREATE 1
  78. #define IPV6_FL_F_EXCL 2
  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. * Bitmask constant declarations to help applications select out the
  86. * flow label and priority fields.
  87. *
  88. * Note that this are in host byte order while the flowinfo field of
  89. * sockaddr_in6 is in network byte order.
  90. */
  91. #define IPV6_FLOWINFO_FLOWLABEL 0x000fffff
  92. #define IPV6_FLOWINFO_PRIORITY 0x0ff00000
  93. /* These defintions are obsolete */
  94. #define IPV6_PRIORITY_UNCHARACTERIZED 0x0000
  95. #define IPV6_PRIORITY_FILLER 0x0100
  96. #define IPV6_PRIORITY_UNATTENDED 0x0200
  97. #define IPV6_PRIORITY_RESERVED1 0x0300
  98. #define IPV6_PRIORITY_BULK 0x0400
  99. #define IPV6_PRIORITY_RESERVED2 0x0500
  100. #define IPV6_PRIORITY_INTERACTIVE 0x0600
  101. #define IPV6_PRIORITY_CONTROL 0x0700
  102. #define IPV6_PRIORITY_8 0x0800
  103. #define IPV6_PRIORITY_9 0x0900
  104. #define IPV6_PRIORITY_10 0x0a00
  105. #define IPV6_PRIORITY_11 0x0b00
  106. #define IPV6_PRIORITY_12 0x0c00
  107. #define IPV6_PRIORITY_13 0x0d00
  108. #define IPV6_PRIORITY_14 0x0e00
  109. #define IPV6_PRIORITY_15 0x0f00
  110. /*
  111. * IPV6 extension headers
  112. */
  113. #define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */
  114. #define IPPROTO_ROUTING 43 /* IPv6 routing header */
  115. #define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */
  116. #define IPPROTO_ICMPV6 58 /* ICMPv6 */
  117. #define IPPROTO_NONE 59 /* IPv6 no next header */
  118. #define IPPROTO_DSTOPTS 60 /* IPv6 destination options */
  119. #define IPPROTO_MH 135 /* IPv6 mobility header */
  120. /*
  121. * IPv6 TLV options.
  122. */
  123. #define IPV6_TLV_PAD0 0
  124. #define IPV6_TLV_PADN 1
  125. #define IPV6_TLV_ROUTERALERT 5
  126. #define IPV6_TLV_JUMBO 194
  127. #define IPV6_TLV_HAO 201 /* home address option */
  128. /*
  129. * IPV6 socket options
  130. */
  131. #define IPV6_ADDRFORM 1
  132. #define IPV6_2292PKTINFO 2
  133. #define IPV6_2292HOPOPTS 3
  134. #define IPV6_2292DSTOPTS 4
  135. #define IPV6_2292RTHDR 5
  136. #define IPV6_2292PKTOPTIONS 6
  137. #define IPV6_CHECKSUM 7
  138. #define IPV6_2292HOPLIMIT 8
  139. #define IPV6_NEXTHOP 9
  140. #define IPV6_AUTHHDR 10 /* obsolete */
  141. #define IPV6_FLOWINFO 11
  142. #define IPV6_UNICAST_HOPS 16
  143. #define IPV6_MULTICAST_IF 17
  144. #define IPV6_MULTICAST_HOPS 18
  145. #define IPV6_MULTICAST_LOOP 19
  146. #define IPV6_ADD_MEMBERSHIP 20
  147. #define IPV6_DROP_MEMBERSHIP 21
  148. #define IPV6_ROUTER_ALERT 22
  149. #define IPV6_MTU_DISCOVER 23
  150. #define IPV6_MTU 24
  151. #define IPV6_RECVERR 25
  152. #define IPV6_V6ONLY 26
  153. #define IPV6_JOIN_ANYCAST 27
  154. #define IPV6_LEAVE_ANYCAST 28
  155. /* IPV6_MTU_DISCOVER values */
  156. #define IPV6_PMTUDISC_DONT 0
  157. #define IPV6_PMTUDISC_WANT 1
  158. #define IPV6_PMTUDISC_DO 2
  159. /* Flowlabel */
  160. #define IPV6_FLOWLABEL_MGR 32
  161. #define IPV6_FLOWINFO_SEND 33
  162. #define IPV6_IPSEC_POLICY 34
  163. #define IPV6_XFRM_POLICY 35
  164. /*
  165. * Multicast:
  166. * Following socket options are shared between IPv4 and IPv6.
  167. *
  168. * MCAST_JOIN_GROUP 42
  169. * MCAST_BLOCK_SOURCE 43
  170. * MCAST_UNBLOCK_SOURCE 44
  171. * MCAST_LEAVE_GROUP 45
  172. * MCAST_JOIN_SOURCE_GROUP 46
  173. * MCAST_LEAVE_SOURCE_GROUP 47
  174. * MCAST_MSFILTER 48
  175. */
  176. /*
  177. * Advanced API (RFC3542) (1)
  178. *
  179. * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c.
  180. */
  181. #define IPV6_RECVPKTINFO 49
  182. #define IPV6_PKTINFO 50
  183. #define IPV6_RECVHOPLIMIT 51
  184. #define IPV6_HOPLIMIT 52
  185. #define IPV6_RECVHOPOPTS 53
  186. #define IPV6_HOPOPTS 54
  187. #define IPV6_RTHDRDSTOPTS 55
  188. #define IPV6_RECVRTHDR 56
  189. #define IPV6_RTHDR 57
  190. #define IPV6_RECVDSTOPTS 58
  191. #define IPV6_DSTOPTS 59
  192. #if 0 /* not yet */
  193. #define IPV6_RECVPATHMTU 60
  194. #define IPV6_PATHMTU 61
  195. #define IPV6_DONTFRAG 62
  196. #define IPV6_USE_MIN_MTU 63
  197. #endif
  198. /*
  199. * Netfilter (1)
  200. *
  201. * Following socket options are used in ip6_tables;
  202. * see include/linux/netfilter_ipv6/ip6_tables.h.
  203. *
  204. * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64
  205. * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65
  206. */
  207. /*
  208. * Advanced API (RFC3542) (2)
  209. */
  210. #define IPV6_RECVTCLASS 66
  211. #define IPV6_TCLASS 67
  212. /*
  213. * Netfilter (2)
  214. *
  215. * Following socket options are used in ip6_tables;
  216. * see include/linux/netfilter_ipv6/ip6_tables.h.
  217. *
  218. * IP6T_SO_GET_REVISION_MATCH 68
  219. * IP6T_SO_GET_REVISION_TARGET 69
  220. */
  221. #endif