in.h 9.4 KB

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  1. /*
  2. * INET An implementation of the TCP/IP protocol suite for the LINUX
  3. * operating system. INET is implemented using the BSD Socket
  4. * interface as the means of communication with the user level.
  5. *
  6. * Definitions of the Internet Protocol.
  7. *
  8. * Version: @(#)in.h 1.0.1 04/21/93
  9. *
  10. * Authors: Original taken from the GNU Project <netinet/in.h> file.
  11. * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  12. *
  13. * This program is free software; you can redistribute it and/or
  14. * modify it under the terms of the GNU General Public License
  15. * as published by the Free Software Foundation; either version
  16. * 2 of the License, or (at your option) any later version.
  17. */
  18. #ifndef _LINUX_IN_H
  19. #define _LINUX_IN_H
  20. #include <linux/types.h>
  21. #include <linux/libc-compat.h>
  22. #include <linux/socket.h>
  23. #if __UAPI_DEF_IN_IPPROTO
  24. /* Standard well-defined IP protocols. */
  25. enum {
  26. IPPROTO_IP = 0, /* Dummy protocol for TCP */
  27. #define IPPROTO_IP IPPROTO_IP
  28. IPPROTO_ICMP = 1, /* Internet Control Message Protocol */
  29. #define IPPROTO_ICMP IPPROTO_ICMP
  30. IPPROTO_IGMP = 2, /* Internet Group Management Protocol */
  31. #define IPPROTO_IGMP IPPROTO_IGMP
  32. IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */
  33. #define IPPROTO_IPIP IPPROTO_IPIP
  34. IPPROTO_TCP = 6, /* Transmission Control Protocol */
  35. #define IPPROTO_TCP IPPROTO_TCP
  36. IPPROTO_EGP = 8, /* Exterior Gateway Protocol */
  37. #define IPPROTO_EGP IPPROTO_EGP
  38. IPPROTO_PUP = 12, /* PUP protocol */
  39. #define IPPROTO_PUP IPPROTO_PUP
  40. IPPROTO_UDP = 17, /* User Datagram Protocol */
  41. #define IPPROTO_UDP IPPROTO_UDP
  42. IPPROTO_IDP = 22, /* XNS IDP protocol */
  43. #define IPPROTO_IDP IPPROTO_IDP
  44. IPPROTO_TP = 29, /* SO Transport Protocol Class 4 */
  45. #define IPPROTO_TP IPPROTO_TP
  46. IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol */
  47. #define IPPROTO_DCCP IPPROTO_DCCP
  48. IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */
  49. #define IPPROTO_IPV6 IPPROTO_IPV6
  50. IPPROTO_RSVP = 46, /* RSVP Protocol */
  51. #define IPPROTO_RSVP IPPROTO_RSVP
  52. IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */
  53. #define IPPROTO_GRE IPPROTO_GRE
  54. IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */
  55. #define IPPROTO_ESP IPPROTO_ESP
  56. IPPROTO_AH = 51, /* Authentication Header protocol */
  57. #define IPPROTO_AH IPPROTO_AH
  58. IPPROTO_MTP = 92, /* Multicast Transport Protocol */
  59. #define IPPROTO_MTP IPPROTO_MTP
  60. IPPROTO_BEETPH = 94, /* IP option pseudo header for BEET */
  61. #define IPPROTO_BEETPH IPPROTO_BEETPH
  62. IPPROTO_ENCAP = 98, /* Encapsulation Header */
  63. #define IPPROTO_ENCAP IPPROTO_ENCAP
  64. IPPROTO_PIM = 103, /* Protocol Independent Multicast */
  65. #define IPPROTO_PIM IPPROTO_PIM
  66. IPPROTO_COMP = 108, /* Compression Header Protocol */
  67. #define IPPROTO_COMP IPPROTO_COMP
  68. IPPROTO_SCTP = 132, /* Stream Control Transport Protocol */
  69. #define IPPROTO_SCTP IPPROTO_SCTP
  70. IPPROTO_UDPLITE = 136, /* UDP-Lite (RFC 3828) */
  71. #define IPPROTO_UDPLITE IPPROTO_UDPLITE
  72. IPPROTO_MPLS = 137, /* MPLS in IP (RFC 4023) */
  73. #define IPPROTO_MPLS IPPROTO_MPLS
  74. IPPROTO_RAW = 255, /* Raw IP packets */
  75. #define IPPROTO_RAW IPPROTO_RAW
  76. IPPROTO_MAX
  77. };
  78. #endif
  79. #if __UAPI_DEF_IN_ADDR
  80. /* Internet address. */
  81. struct in_addr {
  82. __be32 s_addr;
  83. };
  84. #endif
  85. #define IP_TOS 1
  86. #define IP_TTL 2
  87. #define IP_HDRINCL 3
  88. #define IP_OPTIONS 4
  89. #define IP_ROUTER_ALERT 5
  90. #define IP_RECVOPTS 6
  91. #define IP_RETOPTS 7
  92. #define IP_PKTINFO 8
  93. #define IP_PKTOPTIONS 9
  94. #define IP_MTU_DISCOVER 10
  95. #define IP_RECVERR 11
  96. #define IP_RECVTTL 12
  97. #define IP_RECVTOS 13
  98. #define IP_MTU 14
  99. #define IP_FREEBIND 15
  100. #define IP_IPSEC_POLICY 16
  101. #define IP_XFRM_POLICY 17
  102. #define IP_PASSSEC 18
  103. #define IP_TRANSPARENT 19
  104. /* BSD compatibility */
  105. #define IP_RECVRETOPTS IP_RETOPTS
  106. /* TProxy original addresses */
  107. #define IP_ORIGDSTADDR 20
  108. #define IP_RECVORIGDSTADDR IP_ORIGDSTADDR
  109. #define IP_MINTTL 21
  110. #define IP_NODEFRAG 22
  111. #define IP_CHECKSUM 23
  112. #define IP_BIND_ADDRESS_NO_PORT 24
  113. /* IP_MTU_DISCOVER values */
  114. #define IP_PMTUDISC_DONT 0 /* Never send DF frames */
  115. #define IP_PMTUDISC_WANT 1 /* Use per route hints */
  116. #define IP_PMTUDISC_DO 2 /* Always DF */
  117. #define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu */
  118. /* Always use interface mtu (ignores dst pmtu) but don't set DF flag.
  119. * Also incoming ICMP frag_needed notifications will be ignored on
  120. * this socket to prevent accepting spoofed ones.
  121. */
  122. #define IP_PMTUDISC_INTERFACE 4
  123. /* weaker version of IP_PMTUDISC_INTERFACE, which allos packets to get
  124. * fragmented if they exeed the interface mtu
  125. */
  126. #define IP_PMTUDISC_OMIT 5
  127. #define IP_MULTICAST_IF 32
  128. #define IP_MULTICAST_TTL 33
  129. #define IP_MULTICAST_LOOP 34
  130. #define IP_ADD_MEMBERSHIP 35
  131. #define IP_DROP_MEMBERSHIP 36
  132. #define IP_UNBLOCK_SOURCE 37
  133. #define IP_BLOCK_SOURCE 38
  134. #define IP_ADD_SOURCE_MEMBERSHIP 39
  135. #define IP_DROP_SOURCE_MEMBERSHIP 40
  136. #define IP_MSFILTER 41
  137. #define MCAST_JOIN_GROUP 42
  138. #define MCAST_BLOCK_SOURCE 43
  139. #define MCAST_UNBLOCK_SOURCE 44
  140. #define MCAST_LEAVE_GROUP 45
  141. #define MCAST_JOIN_SOURCE_GROUP 46
  142. #define MCAST_LEAVE_SOURCE_GROUP 47
  143. #define MCAST_MSFILTER 48
  144. #define IP_MULTICAST_ALL 49
  145. #define IP_UNICAST_IF 50
  146. #define MCAST_EXCLUDE 0
  147. #define MCAST_INCLUDE 1
  148. /* These need to appear somewhere around here */
  149. #define IP_DEFAULT_MULTICAST_TTL 1
  150. #define IP_DEFAULT_MULTICAST_LOOP 1
  151. /* Request struct for multicast socket ops */
  152. #if __UAPI_DEF_IP_MREQ
  153. struct ip_mreq {
  154. struct in_addr imr_multiaddr; /* IP multicast address of group */
  155. struct in_addr imr_interface; /* local IP address of interface */
  156. };
  157. struct ip_mreqn {
  158. struct in_addr imr_multiaddr; /* IP multicast address of group */
  159. struct in_addr imr_address; /* local IP address of interface */
  160. int imr_ifindex; /* Interface index */
  161. };
  162. struct ip_mreq_source {
  163. __be32 imr_multiaddr;
  164. __be32 imr_interface;
  165. __be32 imr_sourceaddr;
  166. };
  167. struct ip_msfilter {
  168. __be32 imsf_multiaddr;
  169. __be32 imsf_interface;
  170. __u32 imsf_fmode;
  171. __u32 imsf_numsrc;
  172. __be32 imsf_slist[1];
  173. };
  174. #define IP_MSFILTER_SIZE(numsrc) \
  175. (sizeof(struct ip_msfilter) - sizeof(__u32) \
  176. + (numsrc) * sizeof(__u32))
  177. struct group_req {
  178. __u32 gr_interface; /* interface index */
  179. struct __kernel_sockaddr_storage gr_group; /* group address */
  180. };
  181. struct group_source_req {
  182. __u32 gsr_interface; /* interface index */
  183. struct __kernel_sockaddr_storage gsr_group; /* group address */
  184. struct __kernel_sockaddr_storage gsr_source; /* source address */
  185. };
  186. struct group_filter {
  187. __u32 gf_interface; /* interface index */
  188. struct __kernel_sockaddr_storage gf_group; /* multicast address */
  189. __u32 gf_fmode; /* filter mode */
  190. __u32 gf_numsrc; /* number of sources */
  191. struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */
  192. };
  193. #define GROUP_FILTER_SIZE(numsrc) \
  194. (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \
  195. + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
  196. #endif
  197. #if __UAPI_DEF_IN_PKTINFO
  198. struct in_pktinfo {
  199. int ipi_ifindex;
  200. struct in_addr ipi_spec_dst;
  201. struct in_addr ipi_addr;
  202. };
  203. #endif
  204. /* Structure describing an Internet (IP) socket address. */
  205. #if __UAPI_DEF_SOCKADDR_IN
  206. #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
  207. struct sockaddr_in {
  208. __kernel_sa_family_t sin_family; /* Address family */
  209. __be16 sin_port; /* Port number */
  210. struct in_addr sin_addr; /* Internet address */
  211. /* Pad to size of `struct sockaddr'. */
  212. unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) -
  213. sizeof(unsigned short int) - sizeof(struct in_addr)];
  214. };
  215. #define sin_zero __pad /* for BSD UNIX comp. -FvK */
  216. #endif
  217. #if __UAPI_DEF_IN_CLASS
  218. /*
  219. * Definitions of the bits in an Internet address integer.
  220. * On subnets, host and network parts are found according
  221. * to the subnet mask, not these masks.
  222. */
  223. #define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0)
  224. #define IN_CLASSA_NET 0xff000000
  225. #define IN_CLASSA_NSHIFT 24
  226. #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
  227. #define IN_CLASSA_MAX 128
  228. #define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000)
  229. #define IN_CLASSB_NET 0xffff0000
  230. #define IN_CLASSB_NSHIFT 16
  231. #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
  232. #define IN_CLASSB_MAX 65536
  233. #define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000)
  234. #define IN_CLASSC_NET 0xffffff00
  235. #define IN_CLASSC_NSHIFT 8
  236. #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
  237. #define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000)
  238. #define IN_MULTICAST(a) IN_CLASSD(a)
  239. #define IN_MULTICAST_NET 0xF0000000
  240. #define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)
  241. #define IN_BADCLASS(a) IN_EXPERIMENTAL((a))
  242. /* Address to accept any incoming messages. */
  243. #define INADDR_ANY ((unsigned long int) 0x00000000)
  244. /* Address to send to all hosts. */
  245. #define INADDR_BROADCAST ((unsigned long int) 0xffffffff)
  246. /* Address indicating an error return. */
  247. #define INADDR_NONE ((unsigned long int) 0xffffffff)
  248. /* Network number for local host loopback. */
  249. #define IN_LOOPBACKNET 127
  250. /* Address to loopback in software to local host. */
  251. #define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */
  252. #define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)
  253. /* Defines for Multicast INADDR */
  254. #define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */
  255. #define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
  256. #define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
  257. #define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
  258. #endif
  259. /* <asm/byteorder.h> contains the htonl type stuff.. */
  260. #include <asm/byteorder.h>
  261. #endif /* _LINUX_IN_H */