in.h 21 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632
  1. /* Copyright (C) 1991-2017 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, see
  13. <http://www.gnu.org/licenses/>. */
  14. #ifndef _NETINET_IN_H
  15. #define _NETINET_IN_H 1
  16. #include <features.h>
  17. #include <stdint.h>
  18. #include <sys/socket.h>
  19. #include <bits/types.h>
  20. __BEGIN_DECLS
  21. /* Internet address. */
  22. typedef uint32_t in_addr_t;
  23. struct in_addr
  24. {
  25. in_addr_t s_addr;
  26. };
  27. /* Get system-specific definitions. */
  28. #include <bits/in.h>
  29. /* Standard well-defined IP protocols. */
  30. enum
  31. {
  32. IPPROTO_IP = 0, /* Dummy protocol for TCP. */
  33. #define IPPROTO_IP IPPROTO_IP
  34. IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */
  35. #define IPPROTO_ICMP IPPROTO_ICMP
  36. IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */
  37. #define IPPROTO_IGMP IPPROTO_IGMP
  38. IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */
  39. #define IPPROTO_IPIP IPPROTO_IPIP
  40. IPPROTO_TCP = 6, /* Transmission Control Protocol. */
  41. #define IPPROTO_TCP IPPROTO_TCP
  42. IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */
  43. #define IPPROTO_EGP IPPROTO_EGP
  44. IPPROTO_PUP = 12, /* PUP protocol. */
  45. #define IPPROTO_PUP IPPROTO_PUP
  46. IPPROTO_UDP = 17, /* User Datagram Protocol. */
  47. #define IPPROTO_UDP IPPROTO_UDP
  48. IPPROTO_IDP = 22, /* XNS IDP protocol. */
  49. #define IPPROTO_IDP IPPROTO_IDP
  50. IPPROTO_TP = 29, /* SO Transport Protocol Class 4. */
  51. #define IPPROTO_TP IPPROTO_TP
  52. IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol. */
  53. #define IPPROTO_DCCP IPPROTO_DCCP
  54. IPPROTO_IPV6 = 41, /* IPv6 header. */
  55. #define IPPROTO_IPV6 IPPROTO_IPV6
  56. IPPROTO_RSVP = 46, /* Reservation Protocol. */
  57. #define IPPROTO_RSVP IPPROTO_RSVP
  58. IPPROTO_GRE = 47, /* General Routing Encapsulation. */
  59. #define IPPROTO_GRE IPPROTO_GRE
  60. IPPROTO_ESP = 50, /* encapsulating security payload. */
  61. #define IPPROTO_ESP IPPROTO_ESP
  62. IPPROTO_AH = 51, /* authentication header. */
  63. #define IPPROTO_AH IPPROTO_AH
  64. IPPROTO_MTP = 92, /* Multicast Transport Protocol. */
  65. #define IPPROTO_MTP IPPROTO_MTP
  66. IPPROTO_BEETPH = 94, /* IP option pseudo header for BEET. */
  67. #define IPPROTO_BEETPH IPPROTO_BEETPH
  68. IPPROTO_ENCAP = 98, /* Encapsulation Header. */
  69. #define IPPROTO_ENCAP IPPROTO_ENCAP
  70. IPPROTO_PIM = 103, /* Protocol Independent Multicast. */
  71. #define IPPROTO_PIM IPPROTO_PIM
  72. IPPROTO_COMP = 108, /* Compression Header Protocol. */
  73. #define IPPROTO_COMP IPPROTO_COMP
  74. IPPROTO_SCTP = 132, /* Stream Control Transmission Protocol. */
  75. #define IPPROTO_SCTP IPPROTO_SCTP
  76. IPPROTO_UDPLITE = 136, /* UDP-Lite protocol. */
  77. #define IPPROTO_UDPLITE IPPROTO_UDPLITE
  78. IPPROTO_MPLS = 137, /* MPLS in IP. */
  79. #define IPPROTO_MPLS IPPROTO_MPLS
  80. IPPROTO_RAW = 255, /* Raw IP packets. */
  81. #define IPPROTO_RAW IPPROTO_RAW
  82. IPPROTO_MAX
  83. };
  84. /* If __USE_KERNEL_IPV6_DEFS is 1 then the user has included the kernel
  85. network headers first and we should use those ABI-identical definitions
  86. instead of our own, otherwise 0. */
  87. #if !__USE_KERNEL_IPV6_DEFS
  88. enum
  89. {
  90. IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */
  91. #define IPPROTO_HOPOPTS IPPROTO_HOPOPTS
  92. IPPROTO_ROUTING = 43, /* IPv6 routing header. */
  93. #define IPPROTO_ROUTING IPPROTO_ROUTING
  94. IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */
  95. #define IPPROTO_FRAGMENT IPPROTO_FRAGMENT
  96. IPPROTO_ICMPV6 = 58, /* ICMPv6. */
  97. #define IPPROTO_ICMPV6 IPPROTO_ICMPV6
  98. IPPROTO_NONE = 59, /* IPv6 no next header. */
  99. #define IPPROTO_NONE IPPROTO_NONE
  100. IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */
  101. #define IPPROTO_DSTOPTS IPPROTO_DSTOPTS
  102. IPPROTO_MH = 135 /* IPv6 mobility header. */
  103. #define IPPROTO_MH IPPROTO_MH
  104. };
  105. #endif /* !__USE_KERNEL_IPV6_DEFS */
  106. /* Type to represent a port. */
  107. typedef uint16_t in_port_t;
  108. /* Standard well-known ports. */
  109. enum
  110. {
  111. IPPORT_ECHO = 7, /* Echo service. */
  112. IPPORT_DISCARD = 9, /* Discard transmissions service. */
  113. IPPORT_SYSTAT = 11, /* System status service. */
  114. IPPORT_DAYTIME = 13, /* Time of day service. */
  115. IPPORT_NETSTAT = 15, /* Network status service. */
  116. IPPORT_FTP = 21, /* File Transfer Protocol. */
  117. IPPORT_TELNET = 23, /* Telnet protocol. */
  118. IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */
  119. IPPORT_TIMESERVER = 37, /* Timeserver service. */
  120. IPPORT_NAMESERVER = 42, /* Domain Name Service. */
  121. IPPORT_WHOIS = 43, /* Internet Whois service. */
  122. IPPORT_MTP = 57,
  123. IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
  124. IPPORT_RJE = 77,
  125. IPPORT_FINGER = 79, /* Finger service. */
  126. IPPORT_TTYLINK = 87,
  127. IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
  128. IPPORT_EXECSERVER = 512, /* execd service. */
  129. IPPORT_LOGINSERVER = 513, /* rlogind service. */
  130. IPPORT_CMDSERVER = 514,
  131. IPPORT_EFSSERVER = 520,
  132. /* UDP ports. */
  133. IPPORT_BIFFUDP = 512,
  134. IPPORT_WHOSERVER = 513,
  135. IPPORT_ROUTESERVER = 520,
  136. /* Ports less than this value are reserved for privileged processes. */
  137. IPPORT_RESERVED = 1024,
  138. /* Ports greater this value are reserved for (non-privileged) servers. */
  139. IPPORT_USERRESERVED = 5000
  140. };
  141. /* Definitions of the bits in an Internet address integer.
  142. On subnets, host and network parts are found according to
  143. the subnet mask, not these masks. */
  144. #define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0)
  145. #define IN_CLASSA_NET 0xff000000
  146. #define IN_CLASSA_NSHIFT 24
  147. #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
  148. #define IN_CLASSA_MAX 128
  149. #define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000)
  150. #define IN_CLASSB_NET 0xffff0000
  151. #define IN_CLASSB_NSHIFT 16
  152. #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
  153. #define IN_CLASSB_MAX 65536
  154. #define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000)
  155. #define IN_CLASSC_NET 0xffffff00
  156. #define IN_CLASSC_NSHIFT 8
  157. #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
  158. #define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
  159. #define IN_MULTICAST(a) IN_CLASSD(a)
  160. #define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
  161. #define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
  162. /* Address to accept any incoming messages. */
  163. #define INADDR_ANY ((in_addr_t) 0x00000000)
  164. /* Address to send to all hosts. */
  165. #define INADDR_BROADCAST ((in_addr_t) 0xffffffff)
  166. /* Address indicating an error return. */
  167. #define INADDR_NONE ((in_addr_t) 0xffffffff)
  168. /* Network number for local host loopback. */
  169. #define IN_LOOPBACKNET 127
  170. /* Address to loopback in software to local host. */
  171. #ifndef INADDR_LOOPBACK
  172. # define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */
  173. #endif
  174. /* Defines for Multicast INADDR. */
  175. #define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */
  176. #define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */
  177. #define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */
  178. #define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */
  179. #if !__USE_KERNEL_IPV6_DEFS
  180. /* IPv6 address */
  181. struct in6_addr
  182. {
  183. union
  184. {
  185. uint8_t __u6_addr8[16];
  186. uint16_t __u6_addr16[8];
  187. uint32_t __u6_addr32[4];
  188. } __in6_u;
  189. #define s6_addr __in6_u.__u6_addr8
  190. #ifdef __USE_MISC
  191. # define s6_addr16 __in6_u.__u6_addr16
  192. # define s6_addr32 __in6_u.__u6_addr32
  193. #endif
  194. };
  195. #endif /* !__USE_KERNEL_IPV6_DEFS */
  196. extern const struct in6_addr in6addr_any; /* :: */
  197. extern const struct in6_addr in6addr_loopback; /* ::1 */
  198. #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
  199. #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
  200. #define INET_ADDRSTRLEN 16
  201. #define INET6_ADDRSTRLEN 46
  202. /* Structure describing an Internet socket address. */
  203. struct sockaddr_in
  204. {
  205. __SOCKADDR_COMMON (sin_);
  206. in_port_t sin_port; /* Port number. */
  207. struct in_addr sin_addr; /* Internet address. */
  208. /* Pad to size of `struct sockaddr'. */
  209. unsigned char sin_zero[sizeof (struct sockaddr) -
  210. __SOCKADDR_COMMON_SIZE -
  211. sizeof (in_port_t) -
  212. sizeof (struct in_addr)];
  213. };
  214. #if !__USE_KERNEL_IPV6_DEFS
  215. /* Ditto, for IPv6. */
  216. struct sockaddr_in6
  217. {
  218. __SOCKADDR_COMMON (sin6_);
  219. in_port_t sin6_port; /* Transport layer port # */
  220. uint32_t sin6_flowinfo; /* IPv6 flow information */
  221. struct in6_addr sin6_addr; /* IPv6 address */
  222. uint32_t sin6_scope_id; /* IPv6 scope-id */
  223. };
  224. #endif /* !__USE_KERNEL_IPV6_DEFS */
  225. #ifdef __USE_MISC
  226. /* IPv4 multicast request. */
  227. struct ip_mreq
  228. {
  229. /* IP multicast address of group. */
  230. struct in_addr imr_multiaddr;
  231. /* Local IP address of interface. */
  232. struct in_addr imr_interface;
  233. };
  234. struct ip_mreq_source
  235. {
  236. /* IP multicast address of group. */
  237. struct in_addr imr_multiaddr;
  238. /* IP address of source. */
  239. struct in_addr imr_interface;
  240. /* IP address of interface. */
  241. struct in_addr imr_sourceaddr;
  242. };
  243. #endif
  244. #if !__USE_KERNEL_IPV6_DEFS
  245. /* Likewise, for IPv6. */
  246. struct ipv6_mreq
  247. {
  248. /* IPv6 multicast address of group */
  249. struct in6_addr ipv6mr_multiaddr;
  250. /* local interface */
  251. unsigned int ipv6mr_interface;
  252. };
  253. #endif /* !__USE_KERNEL_IPV6_DEFS */
  254. #ifdef __USE_MISC
  255. /* Multicast group request. */
  256. struct group_req
  257. {
  258. /* Interface index. */
  259. uint32_t gr_interface;
  260. /* Group address. */
  261. struct sockaddr_storage gr_group;
  262. };
  263. struct group_source_req
  264. {
  265. /* Interface index. */
  266. uint32_t gsr_interface;
  267. /* Group address. */
  268. struct sockaddr_storage gsr_group;
  269. /* Source address. */
  270. struct sockaddr_storage gsr_source;
  271. };
  272. /* Full-state filter operations. */
  273. struct ip_msfilter
  274. {
  275. /* IP multicast address of group. */
  276. struct in_addr imsf_multiaddr;
  277. /* Local IP address of interface. */
  278. struct in_addr imsf_interface;
  279. /* Filter mode. */
  280. uint32_t imsf_fmode;
  281. /* Number of source addresses. */
  282. uint32_t imsf_numsrc;
  283. /* Source addresses. */
  284. struct in_addr imsf_slist[1];
  285. };
  286. #define IP_MSFILTER_SIZE(numsrc) (sizeof (struct ip_msfilter) \
  287. - sizeof (struct in_addr) \
  288. + (numsrc) * sizeof (struct in_addr))
  289. struct group_filter
  290. {
  291. /* Interface index. */
  292. uint32_t gf_interface;
  293. /* Group address. */
  294. struct sockaddr_storage gf_group;
  295. /* Filter mode. */
  296. uint32_t gf_fmode;
  297. /* Number of source addresses. */
  298. uint32_t gf_numsrc;
  299. /* Source addresses. */
  300. struct sockaddr_storage gf_slist[1];
  301. };
  302. #define GROUP_FILTER_SIZE(numsrc) (sizeof (struct group_filter) \
  303. - sizeof (struct sockaddr_storage) \
  304. + ((numsrc) \
  305. * sizeof (struct sockaddr_storage)))
  306. #endif
  307. /* Functions to convert between host and network byte order.
  308. Please note that these functions normally take `unsigned long int' or
  309. `unsigned short int' values as arguments and also return them. But
  310. this was a short-sighted decision since on different systems the types
  311. may have different representations but the values are always the same. */
  312. extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__));
  313. extern uint16_t ntohs (uint16_t __netshort)
  314. __THROW __attribute__ ((__const__));
  315. extern uint32_t htonl (uint32_t __hostlong)
  316. __THROW __attribute__ ((__const__));
  317. extern uint16_t htons (uint16_t __hostshort)
  318. __THROW __attribute__ ((__const__));
  319. #include <endian.h>
  320. /* Get machine dependent optimized versions of byte swapping functions. */
  321. #include <bits/byteswap.h>
  322. #include <bits/uintn-identity.h>
  323. #ifdef __OPTIMIZE__
  324. /* We can optimize calls to the conversion functions. Either nothing has
  325. to be done or we are using directly the byte-swapping functions which
  326. often can be inlined. */
  327. # if __BYTE_ORDER == __BIG_ENDIAN
  328. /* The host byte order is the same as network byte order,
  329. so these functions are all just identity. */
  330. # define ntohl(x) __uint32_identity (x)
  331. # define ntohs(x) __uint16_identity (x)
  332. # define htonl(x) __uint32_identity (x)
  333. # define htons(x) __uint16_identity (x)
  334. # else
  335. # if __BYTE_ORDER == __LITTLE_ENDIAN
  336. # define ntohl(x) __bswap_32 (x)
  337. # define ntohs(x) __bswap_16 (x)
  338. # define htonl(x) __bswap_32 (x)
  339. # define htons(x) __bswap_16 (x)
  340. # endif
  341. # endif
  342. #endif
  343. #ifdef __GNUC__
  344. # define IN6_IS_ADDR_UNSPECIFIED(a) \
  345. (__extension__ \
  346. ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
  347. __a->__in6_u.__u6_addr32[0] == 0 \
  348. && __a->__in6_u.__u6_addr32[1] == 0 \
  349. && __a->__in6_u.__u6_addr32[2] == 0 \
  350. && __a->__in6_u.__u6_addr32[3] == 0; }))
  351. # define IN6_IS_ADDR_LOOPBACK(a) \
  352. (__extension__ \
  353. ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
  354. __a->__in6_u.__u6_addr32[0] == 0 \
  355. && __a->__in6_u.__u6_addr32[1] == 0 \
  356. && __a->__in6_u.__u6_addr32[2] == 0 \
  357. && __a->__in6_u.__u6_addr32[3] == htonl (1); }))
  358. # define IN6_IS_ADDR_LINKLOCAL(a) \
  359. (__extension__ \
  360. ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
  361. (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfe800000); }))
  362. # define IN6_IS_ADDR_SITELOCAL(a) \
  363. (__extension__ \
  364. ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
  365. (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfec00000); }))
  366. # define IN6_IS_ADDR_V4MAPPED(a) \
  367. (__extension__ \
  368. ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
  369. __a->__in6_u.__u6_addr32[0] == 0 \
  370. && __a->__in6_u.__u6_addr32[1] == 0 \
  371. && __a->__in6_u.__u6_addr32[2] == htonl (0xffff); }))
  372. # define IN6_IS_ADDR_V4COMPAT(a) \
  373. (__extension__ \
  374. ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
  375. __a->__in6_u.__u6_addr32[0] == 0 \
  376. && __a->__in6_u.__u6_addr32[1] == 0 \
  377. && __a->__in6_u.__u6_addr32[2] == 0 \
  378. && ntohl (__a->__in6_u.__u6_addr32[3]) > 1; }))
  379. # define IN6_ARE_ADDR_EQUAL(a,b) \
  380. (__extension__ \
  381. ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
  382. const struct in6_addr *__b = (const struct in6_addr *) (b); \
  383. __a->__in6_u.__u6_addr32[0] == __b->__in6_u.__u6_addr32[0] \
  384. && __a->__in6_u.__u6_addr32[1] == __b->__in6_u.__u6_addr32[1] \
  385. && __a->__in6_u.__u6_addr32[2] == __b->__in6_u.__u6_addr32[2] \
  386. && __a->__in6_u.__u6_addr32[3] == __b->__in6_u.__u6_addr32[3]; }))
  387. #else
  388. # define IN6_IS_ADDR_UNSPECIFIED(a) \
  389. (((const uint32_t *) (a))[0] == 0 \
  390. && ((const uint32_t *) (a))[1] == 0 \
  391. && ((const uint32_t *) (a))[2] == 0 \
  392. && ((const uint32_t *) (a))[3] == 0)
  393. # define IN6_IS_ADDR_LOOPBACK(a) \
  394. (((const uint32_t *) (a))[0] == 0 \
  395. && ((const uint32_t *) (a))[1] == 0 \
  396. && ((const uint32_t *) (a))[2] == 0 \
  397. && ((const uint32_t *) (a))[3] == htonl (1))
  398. # define IN6_IS_ADDR_LINKLOCAL(a) \
  399. ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \
  400. == htonl (0xfe800000))
  401. # define IN6_IS_ADDR_SITELOCAL(a) \
  402. ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \
  403. == htonl (0xfec00000))
  404. # define IN6_IS_ADDR_V4MAPPED(a) \
  405. ((((const uint32_t *) (a))[0] == 0) \
  406. && (((const uint32_t *) (a))[1] == 0) \
  407. && (((const uint32_t *) (a))[2] == htonl (0xffff)))
  408. # define IN6_IS_ADDR_V4COMPAT(a) \
  409. ((((const uint32_t *) (a))[0] == 0) \
  410. && (((const uint32_t *) (a))[1] == 0) \
  411. && (((const uint32_t *) (a))[2] == 0) \
  412. && (ntohl (((const uint32_t *) (a))[3]) > 1))
  413. # define IN6_ARE_ADDR_EQUAL(a,b) \
  414. ((((const uint32_t *) (a))[0] == ((const uint32_t *) (b))[0]) \
  415. && (((const uint32_t *) (a))[1] == ((const uint32_t *) (b))[1]) \
  416. && (((const uint32_t *) (a))[2] == ((const uint32_t *) (b))[2]) \
  417. && (((const uint32_t *) (a))[3] == ((const uint32_t *) (b))[3]))
  418. #endif
  419. #define IN6_IS_ADDR_MULTICAST(a) (((const uint8_t *) (a))[0] == 0xff)
  420. #ifdef __USE_MISC
  421. /* Bind socket to a privileged IP port. */
  422. extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW;
  423. /* The IPv6 version of this function. */
  424. extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in)
  425. __THROW;
  426. #endif
  427. #define IN6_IS_ADDR_MC_NODELOCAL(a) \
  428. (IN6_IS_ADDR_MULTICAST(a) \
  429. && ((((const uint8_t *) (a))[1] & 0xf) == 0x1))
  430. #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
  431. (IN6_IS_ADDR_MULTICAST(a) \
  432. && ((((const uint8_t *) (a))[1] & 0xf) == 0x2))
  433. #define IN6_IS_ADDR_MC_SITELOCAL(a) \
  434. (IN6_IS_ADDR_MULTICAST(a) \
  435. && ((((const uint8_t *) (a))[1] & 0xf) == 0x5))
  436. #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
  437. (IN6_IS_ADDR_MULTICAST(a) \
  438. && ((((const uint8_t *) (a))[1] & 0xf) == 0x8))
  439. #define IN6_IS_ADDR_MC_GLOBAL(a) \
  440. (IN6_IS_ADDR_MULTICAST(a) \
  441. && ((((const uint8_t *) (a))[1] & 0xf) == 0xe))
  442. #ifdef __USE_GNU
  443. struct cmsghdr; /* Forward declaration. */
  444. #if !__USE_KERNEL_IPV6_DEFS
  445. /* IPv6 packet information. */
  446. struct in6_pktinfo
  447. {
  448. struct in6_addr ipi6_addr; /* src/dst IPv6 address */
  449. unsigned int ipi6_ifindex; /* send/recv interface index */
  450. };
  451. /* IPv6 MTU information. */
  452. struct ip6_mtuinfo
  453. {
  454. struct sockaddr_in6 ip6m_addr; /* dst address including zone ID */
  455. uint32_t ip6m_mtu; /* path MTU in host byte order */
  456. };
  457. #endif /* !__USE_KERNEL_IPV6_DEFS */
  458. /* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */
  459. extern int inet6_option_space (int __nbytes)
  460. __THROW __attribute_deprecated__;
  461. extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp,
  462. int __type) __THROW __attribute_deprecated__;
  463. extern int inet6_option_append (struct cmsghdr *__cmsg,
  464. const uint8_t *__typep, int __multx,
  465. int __plusy) __THROW __attribute_deprecated__;
  466. extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen,
  467. int __multx, int __plusy)
  468. __THROW __attribute_deprecated__;
  469. extern int inet6_option_next (const struct cmsghdr *__cmsg,
  470. uint8_t **__tptrp)
  471. __THROW __attribute_deprecated__;
  472. extern int inet6_option_find (const struct cmsghdr *__cmsg,
  473. uint8_t **__tptrp, int __type)
  474. __THROW __attribute_deprecated__;
  475. /* Hop-by-Hop and Destination Options Processing (RFC 3542). */
  476. extern int inet6_opt_init (void *__extbuf, socklen_t __extlen) __THROW;
  477. extern int inet6_opt_append (void *__extbuf, socklen_t __extlen, int __offset,
  478. uint8_t __type, socklen_t __len, uint8_t __align,
  479. void **__databufp) __THROW;
  480. extern int inet6_opt_finish (void *__extbuf, socklen_t __extlen, int __offset)
  481. __THROW;
  482. extern int inet6_opt_set_val (void *__databuf, int __offset, void *__val,
  483. socklen_t __vallen) __THROW;
  484. extern int inet6_opt_next (void *__extbuf, socklen_t __extlen, int __offset,
  485. uint8_t *__typep, socklen_t *__lenp,
  486. void **__databufp) __THROW;
  487. extern int inet6_opt_find (void *__extbuf, socklen_t __extlen, int __offset,
  488. uint8_t __type, socklen_t *__lenp,
  489. void **__databufp) __THROW;
  490. extern int inet6_opt_get_val (void *__databuf, int __offset, void *__val,
  491. socklen_t __vallen) __THROW;
  492. /* Routing Header Option (RFC 3542). */
  493. extern socklen_t inet6_rth_space (int __type, int __segments) __THROW;
  494. extern void *inet6_rth_init (void *__bp, socklen_t __bp_len, int __type,
  495. int __segments) __THROW;
  496. extern int inet6_rth_add (void *__bp, const struct in6_addr *__addr) __THROW;
  497. extern int inet6_rth_reverse (const void *__in, void *__out) __THROW;
  498. extern int inet6_rth_segments (const void *__bp) __THROW;
  499. extern struct in6_addr *inet6_rth_getaddr (const void *__bp, int __index)
  500. __THROW;
  501. /* Multicast source filter support. */
  502. /* Get IPv4 source filter. */
  503. extern int getipv4sourcefilter (int __s, struct in_addr __interface_addr,
  504. struct in_addr __group, uint32_t *__fmode,
  505. uint32_t *__numsrc, struct in_addr *__slist)
  506. __THROW;
  507. /* Set IPv4 source filter. */
  508. extern int setipv4sourcefilter (int __s, struct in_addr __interface_addr,
  509. struct in_addr __group, uint32_t __fmode,
  510. uint32_t __numsrc,
  511. const struct in_addr *__slist)
  512. __THROW;
  513. /* Get source filter. */
  514. extern int getsourcefilter (int __s, uint32_t __interface_addr,
  515. const struct sockaddr *__group,
  516. socklen_t __grouplen, uint32_t *__fmode,
  517. uint32_t *__numsrc,
  518. struct sockaddr_storage *__slist) __THROW;
  519. /* Set source filter. */
  520. extern int setsourcefilter (int __s, uint32_t __interface_addr,
  521. const struct sockaddr *__group,
  522. socklen_t __grouplen, uint32_t __fmode,
  523. uint32_t __numsrc,
  524. const struct sockaddr_storage *__slist) __THROW;
  525. #endif /* use GNU */
  526. __END_DECLS
  527. #endif /* netinet/in.h */