in.h 6.3 KB

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  1. /* Copyright (C) 1991-1999, 2000, 2004 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. /* Linux version. */
  16. #ifndef _NETINET_IN_H
  17. # error "Never use <bits/in.h> directly; include <netinet/in.h> instead."
  18. #endif
  19. /* Options for use with `getsockopt' and `setsockopt' at the IP level.
  20. The first word in the comment at the right is the data type used;
  21. "bool" means a boolean value stored in an `int'. */
  22. #define IP_TOS 1 /* int; IP type of service and precedence. */
  23. #define IP_TTL 2 /* int; IP time to live. */
  24. #define IP_HDRINCL 3 /* int; Header is included with data. */
  25. #define IP_OPTIONS 4 /* ip_opts; IP per-packet options. */
  26. #define IP_ROUTER_ALERT 5 /* bool */
  27. #define IP_RECVOPTS 6 /* bool; Receive all IP options w/datagram. */
  28. #define IP_RETOPTS 7 /* bool; Set/get IP per-packet options. */
  29. #define IP_PKTINFO 8 /* bool */
  30. #define IP_PKTOPTIONS 9
  31. #define IP_PMTUDISC 10 /* obsolete name? */
  32. #define IP_MTU_DISCOVER 10 /* int; see below */
  33. #define IP_RECVERR 11 /* bool */
  34. #define IP_RECVTTL 12 /* bool */
  35. #define IP_RECVTOS 13 /* bool */
  36. #define IP_MULTICAST_IF 32 /* in_addr; set/get IP multicast i/f */
  37. #define IP_MULTICAST_TTL 33 /* u_char; set/get IP multicast ttl */
  38. #define IP_MULTICAST_LOOP 34 /* i_char; set/get IP multicast loopback */
  39. #define IP_ADD_MEMBERSHIP 35 /* ip_mreq; add an IP group membership */
  40. #define IP_DROP_MEMBERSHIP 36 /* ip_mreq; drop an IP group membership */
  41. #define IP_UNBLOCK_SOURCE 37 /* ip_mreq_source: unblock data from source */
  42. #define IP_BLOCK_SOURCE 38 /* ip_mreq_source: block data from source */
  43. #define IP_ADD_SOURCE_MEMBERSHIP 39 /* ip_mreq_source: join source group */
  44. #define IP_DROP_SOURCE_MEMBERSHIP 40 /* ip_mreq_source: leave source group */
  45. #define IP_MSFILTER 41
  46. #define MCAST_JOIN_GROUP 42 /* group_req: join any-source group */
  47. #define MCAST_BLOCK_SOURCE 43 /* group_source_req: block from given group */
  48. #define MCAST_UNBLOCK_SOURCE 44 /* group_source_req: unblock from given group*/
  49. #define MCAST_LEAVE_GROUP 45 /* group_req: leave any-source group */
  50. #define MCAST_JOIN_SOURCE_GROUP 46 /* group_source_req: join source-spec gr */
  51. #define MCAST_LEAVE_SOURCE_GROUP 47 /* group_source_req: leave source-spec gr*/
  52. #define MCAST_MSFILTER 48
  53. #define MCAST_EXCLUDE 0
  54. #define MCAST_INCLUDE 1
  55. /* For BSD compatibility. */
  56. #define IP_RECVRETOPTS IP_RETOPTS /* bool; Receive IP options for response. */
  57. /* IP_MTU_DISCOVER arguments. */
  58. #define IP_PMTUDISC_DONT 0 /* Never send DF frames. */
  59. #define IP_PMTUDISC_WANT 1 /* Use per route hints. */
  60. #define IP_PMTUDISC_DO 2 /* Always DF. */
  61. /* To select the IP level. */
  62. #define SOL_IP 0
  63. #define IP_DEFAULT_MULTICAST_TTL 1
  64. #define IP_DEFAULT_MULTICAST_LOOP 1
  65. #define IP_MAX_MEMBERSHIPS 20
  66. /* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS.
  67. The `ip_dst' field is used for the first-hop gateway when using a
  68. source route (this gets put into the header proper). */
  69. struct ip_opts
  70. {
  71. struct in_addr ip_dst; /* First hop; zero without source route. */
  72. char ip_opts[40]; /* Actually variable in size. */
  73. };
  74. /* Structure used for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. */
  75. struct ip_mreq
  76. {
  77. struct in_addr imr_multiaddr; /* IP multicast address of group */
  78. struct in_addr imr_interface; /* local IP address of interface */
  79. };
  80. /* As above but including interface specification by index. */
  81. struct ip_mreqn
  82. {
  83. struct in_addr imr_multiaddr; /* IP multicast address of group */
  84. struct in_addr imr_address; /* local IP address of interface */
  85. int imr_ifindex; /* Interface index */
  86. };
  87. /* Structure used for IP_PKTINFO. */
  88. struct in_pktinfo
  89. {
  90. int ipi_ifindex; /* Interface index */
  91. struct in_addr ipi_spec_dst; /* Routing destination address */
  92. struct in_addr ipi_addr; /* Header destination address */
  93. };
  94. /* Options for use with `getsockopt' and `setsockopt' at the IPv6 level.
  95. The first word in the comment at the right is the data type used;
  96. "bool" means a boolean value stored in an `int'. */
  97. #define IPV6_ADDRFORM 1
  98. #define IPV6_PKTINFO 2
  99. #define IPV6_HOPOPTS 3
  100. #define IPV6_DSTOPTS 4
  101. #define IPV6_RTHDR 5
  102. #define IPV6_PKTOPTIONS 6
  103. #define IPV6_CHECKSUM 7
  104. #define IPV6_HOPLIMIT 8
  105. #define IPV6_NEXTHOP 9
  106. #define IPV6_AUTHHDR 10
  107. #define IPV6_UNICAST_HOPS 16
  108. #define IPV6_MULTICAST_IF 17
  109. #define IPV6_MULTICAST_HOPS 18
  110. #define IPV6_MULTICAST_LOOP 19
  111. #define IPV6_JOIN_GROUP 20
  112. #define IPV6_LEAVE_GROUP 21
  113. #define IPV6_ROUTER_ALERT 22
  114. #define IPV6_MTU_DISCOVER 23
  115. #define IPV6_MTU 24
  116. #define IPV6_RECVERR 25
  117. #define IPV6_V6ONLY 26
  118. #define IPV6_JOIN_ANYCAST 27
  119. #define IPV6_LEAVE_ANYCAST 28
  120. #define IPV6_IPSEC_POLICY 34
  121. #define IPV6_XFRM_POLICY 35
  122. #define SCM_SRCRT IPV6_RXSRCRT
  123. /* Obsolete synonyms for the above. */
  124. #define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
  125. #define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
  126. #define IPV6_RXHOPOPTS IPV6_HOPOPTS
  127. #define IPV6_RXDSTOPTS IPV6_DSTOPTS
  128. /* IPV6_MTU_DISCOVER values. */
  129. #define IPV6_PMTUDISC_DONT 0 /* Never send DF frames. */
  130. #define IPV6_PMTUDISC_WANT 1 /* Use per route hints. */
  131. #define IPV6_PMTUDISC_DO 2 /* Always DF. */
  132. /* Socket level values for IPv6. */
  133. #define SOL_IPV6 41
  134. #define SOL_ICMPV6 58
  135. /* Routing header options for IPv6. */
  136. #define IPV6_RTHDR_LOOSE 0 /* Hop doesn't need to be neighbour. */
  137. #define IPV6_RTHDR_STRICT 1 /* Hop must be a neighbour. */
  138. #define IPV6_RTHDR_TYPE_0 0 /* IPv6 Routing header type 0. */