1 /* Copyright (C) 1991-2017 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
19 #define _NETINET_IN_H 1
22 #include <bits/stdint-uintn.h>
23 #include <sys/socket.h>
24 #include <bits/types.h>
29 /* Internet address. */
30 typedef uint32_t in_addr_t
;
36 /* Get system-specific definitions. */
39 /* Standard well-defined IP protocols. */
42 IPPROTO_IP
= 0, /* Dummy protocol for TCP. */
43 #define IPPROTO_IP IPPROTO_IP
44 IPPROTO_ICMP
= 1, /* Internet Control Message Protocol. */
45 #define IPPROTO_ICMP IPPROTO_ICMP
46 IPPROTO_IGMP
= 2, /* Internet Group Management Protocol. */
47 #define IPPROTO_IGMP IPPROTO_IGMP
48 IPPROTO_IPIP
= 4, /* IPIP tunnels (older KA9Q tunnels use 94). */
49 #define IPPROTO_IPIP IPPROTO_IPIP
50 IPPROTO_TCP
= 6, /* Transmission Control Protocol. */
51 #define IPPROTO_TCP IPPROTO_TCP
52 IPPROTO_EGP
= 8, /* Exterior Gateway Protocol. */
53 #define IPPROTO_EGP IPPROTO_EGP
54 IPPROTO_PUP
= 12, /* PUP protocol. */
55 #define IPPROTO_PUP IPPROTO_PUP
56 IPPROTO_UDP
= 17, /* User Datagram Protocol. */
57 #define IPPROTO_UDP IPPROTO_UDP
58 IPPROTO_IDP
= 22, /* XNS IDP protocol. */
59 #define IPPROTO_IDP IPPROTO_IDP
60 IPPROTO_TP
= 29, /* SO Transport Protocol Class 4. */
61 #define IPPROTO_TP IPPROTO_TP
62 IPPROTO_DCCP
= 33, /* Datagram Congestion Control Protocol. */
63 #define IPPROTO_DCCP IPPROTO_DCCP
64 IPPROTO_IPV6
= 41, /* IPv6 header. */
65 #define IPPROTO_IPV6 IPPROTO_IPV6
66 IPPROTO_RSVP
= 46, /* Reservation Protocol. */
67 #define IPPROTO_RSVP IPPROTO_RSVP
68 IPPROTO_GRE
= 47, /* General Routing Encapsulation. */
69 #define IPPROTO_GRE IPPROTO_GRE
70 IPPROTO_ESP
= 50, /* encapsulating security payload. */
71 #define IPPROTO_ESP IPPROTO_ESP
72 IPPROTO_AH
= 51, /* authentication header. */
73 #define IPPROTO_AH IPPROTO_AH
74 IPPROTO_MTP
= 92, /* Multicast Transport Protocol. */
75 #define IPPROTO_MTP IPPROTO_MTP
76 IPPROTO_BEETPH
= 94, /* IP option pseudo header for BEET. */
77 #define IPPROTO_BEETPH IPPROTO_BEETPH
78 IPPROTO_ENCAP
= 98, /* Encapsulation Header. */
79 #define IPPROTO_ENCAP IPPROTO_ENCAP
80 IPPROTO_PIM
= 103, /* Protocol Independent Multicast. */
81 #define IPPROTO_PIM IPPROTO_PIM
82 IPPROTO_COMP
= 108, /* Compression Header Protocol. */
83 #define IPPROTO_COMP IPPROTO_COMP
84 IPPROTO_SCTP
= 132, /* Stream Control Transmission Protocol. */
85 #define IPPROTO_SCTP IPPROTO_SCTP
86 IPPROTO_UDPLITE
= 136, /* UDP-Lite protocol. */
87 #define IPPROTO_UDPLITE IPPROTO_UDPLITE
88 IPPROTO_MPLS
= 137, /* MPLS in IP. */
89 #define IPPROTO_MPLS IPPROTO_MPLS
90 IPPROTO_RAW
= 255, /* Raw IP packets. */
91 #define IPPROTO_RAW IPPROTO_RAW
95 /* If __USE_KERNEL_IPV6_DEFS is 1 then the user has included the kernel
96 network headers first and we should use those ABI-identical definitions
97 instead of our own, otherwise 0. */
98 #if !__USE_KERNEL_IPV6_DEFS
101 IPPROTO_HOPOPTS
= 0, /* IPv6 Hop-by-Hop options. */
102 #define IPPROTO_HOPOPTS IPPROTO_HOPOPTS
103 IPPROTO_ROUTING
= 43, /* IPv6 routing header. */
104 #define IPPROTO_ROUTING IPPROTO_ROUTING
105 IPPROTO_FRAGMENT
= 44, /* IPv6 fragmentation header. */
106 #define IPPROTO_FRAGMENT IPPROTO_FRAGMENT
107 IPPROTO_ICMPV6
= 58, /* ICMPv6. */
108 #define IPPROTO_ICMPV6 IPPROTO_ICMPV6
109 IPPROTO_NONE
= 59, /* IPv6 no next header. */
110 #define IPPROTO_NONE IPPROTO_NONE
111 IPPROTO_DSTOPTS
= 60, /* IPv6 destination options. */
112 #define IPPROTO_DSTOPTS IPPROTO_DSTOPTS
113 IPPROTO_MH
= 135 /* IPv6 mobility header. */
114 #define IPPROTO_MH IPPROTO_MH
116 #endif /* !__USE_KERNEL_IPV6_DEFS */
118 /* Type to represent a port. */
119 typedef uint16_t in_port_t
;
121 /* Standard well-known ports. */
124 IPPORT_ECHO
= 7, /* Echo service. */
125 IPPORT_DISCARD
= 9, /* Discard transmissions service. */
126 IPPORT_SYSTAT
= 11, /* System status service. */
127 IPPORT_DAYTIME
= 13, /* Time of day service. */
128 IPPORT_NETSTAT
= 15, /* Network status service. */
129 IPPORT_FTP
= 21, /* File Transfer Protocol. */
130 IPPORT_TELNET
= 23, /* Telnet protocol. */
131 IPPORT_SMTP
= 25, /* Simple Mail Transfer Protocol. */
132 IPPORT_TIMESERVER
= 37, /* Timeserver service. */
133 IPPORT_NAMESERVER
= 42, /* Domain Name Service. */
134 IPPORT_WHOIS
= 43, /* Internet Whois service. */
137 IPPORT_TFTP
= 69, /* Trivial File Transfer Protocol. */
139 IPPORT_FINGER
= 79, /* Finger service. */
141 IPPORT_SUPDUP
= 95, /* SUPDUP protocol. */
144 IPPORT_EXECSERVER
= 512, /* execd service. */
145 IPPORT_LOGINSERVER
= 513, /* rlogind service. */
146 IPPORT_CMDSERVER
= 514,
147 IPPORT_EFSSERVER
= 520,
150 IPPORT_BIFFUDP
= 512,
151 IPPORT_WHOSERVER
= 513,
152 IPPORT_ROUTESERVER
= 520,
154 /* Ports less than this value are reserved for privileged processes. */
155 IPPORT_RESERVED
= 1024,
157 /* Ports greater this value are reserved for (non-privileged) servers. */
158 IPPORT_USERRESERVED
= 5000
161 /* Definitions of the bits in an Internet address integer.
163 On subnets, host and network parts are found according to
164 the subnet mask, not these masks. */
166 #define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0)
167 #define IN_CLASSA_NET 0xff000000
168 #define IN_CLASSA_NSHIFT 24
169 #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
170 #define IN_CLASSA_MAX 128
172 #define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000)
173 #define IN_CLASSB_NET 0xffff0000
174 #define IN_CLASSB_NSHIFT 16
175 #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
176 #define IN_CLASSB_MAX 65536
178 #define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000)
179 #define IN_CLASSC_NET 0xffffff00
180 #define IN_CLASSC_NSHIFT 8
181 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
183 #define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
184 #define IN_MULTICAST(a) IN_CLASSD(a)
186 #define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
187 #define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
189 /* Address to accept any incoming messages. */
190 #define INADDR_ANY ((in_addr_t) 0x00000000)
191 /* Address to send to all hosts. */
192 #define INADDR_BROADCAST ((in_addr_t) 0xffffffff)
193 /* Address indicating an error return. */
194 #define INADDR_NONE ((in_addr_t) 0xffffffff)
196 /* Network number for local host loopback. */
197 #define IN_LOOPBACKNET 127
198 /* Address to loopback in software to local host. */
199 #ifndef INADDR_LOOPBACK
200 # define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */
203 /* Defines for Multicast INADDR. */
204 #define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */
205 #define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */
206 #define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */
207 #define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */
209 #if !__USE_KERNEL_IPV6_DEFS
215 uint8_t __u6_addr8
[16];
216 uint16_t __u6_addr16
[8];
217 uint32_t __u6_addr32
[4];
219 #define s6_addr __in6_u.__u6_addr8
221 # define s6_addr16 __in6_u.__u6_addr16
222 # define s6_addr32 __in6_u.__u6_addr32
225 #endif /* !__USE_KERNEL_IPV6_DEFS */
227 extern const struct in6_addr in6addr_any
; /* :: */
228 extern const struct in6_addr in6addr_loopback
; /* ::1 */
229 #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
230 #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
232 #define INET_ADDRSTRLEN 16
233 #define INET6_ADDRSTRLEN 46
236 /* Structure describing an Internet socket address. */
239 __SOCKADDR_COMMON (sin_
);
240 in_port_t sin_port
; /* Port number. */
241 struct in_addr sin_addr
; /* Internet address. */
243 /* Pad to size of `struct sockaddr'. */
244 unsigned char sin_zero
[sizeof (struct sockaddr
) -
245 __SOCKADDR_COMMON_SIZE
-
247 sizeof (struct in_addr
)];
250 #if !__USE_KERNEL_IPV6_DEFS
251 /* Ditto, for IPv6. */
254 __SOCKADDR_COMMON (sin6_
);
255 in_port_t sin6_port
; /* Transport layer port # */
256 uint32_t sin6_flowinfo
; /* IPv6 flow information */
257 struct in6_addr sin6_addr
; /* IPv6 address */
258 uint32_t sin6_scope_id
; /* IPv6 scope-id */
260 #endif /* !__USE_KERNEL_IPV6_DEFS */
263 /* IPv4 multicast request. */
266 /* IP multicast address of group. */
267 struct in_addr imr_multiaddr
;
269 /* Local IP address of interface. */
270 struct in_addr imr_interface
;
273 struct ip_mreq_source
275 /* IP multicast address of group. */
276 struct in_addr imr_multiaddr
;
278 /* IP address of interface. */
279 struct in_addr imr_interface
;
281 /* IP address of source. */
282 struct in_addr imr_sourceaddr
;
286 #if !__USE_KERNEL_IPV6_DEFS
287 /* Likewise, for IPv6. */
290 /* IPv6 multicast address of group */
291 struct in6_addr ipv6mr_multiaddr
;
293 /* local interface */
294 unsigned int ipv6mr_interface
;
296 #endif /* !__USE_KERNEL_IPV6_DEFS */
299 /* Multicast group request. */
302 /* Interface index. */
303 uint32_t gr_interface
;
306 struct sockaddr_storage gr_group
;
309 struct group_source_req
311 /* Interface index. */
312 uint32_t gsr_interface
;
315 struct sockaddr_storage gsr_group
;
317 /* Source address. */
318 struct sockaddr_storage gsr_source
;
322 /* Full-state filter operations. */
325 /* IP multicast address of group. */
326 struct in_addr imsf_multiaddr
;
328 /* Local IP address of interface. */
329 struct in_addr imsf_interface
;
334 /* Number of source addresses. */
335 uint32_t imsf_numsrc
;
336 /* Source addresses. */
337 struct in_addr imsf_slist
[1];
340 #define IP_MSFILTER_SIZE(numsrc) (sizeof (struct ip_msfilter) \
341 - sizeof (struct in_addr) \
342 + (numsrc) * sizeof (struct in_addr))
346 /* Interface index. */
347 uint32_t gf_interface
;
350 struct sockaddr_storage gf_group
;
355 /* Number of source addresses. */
357 /* Source addresses. */
358 struct sockaddr_storage gf_slist
[1];
361 #define GROUP_FILTER_SIZE(numsrc) (sizeof (struct group_filter) \
362 - sizeof (struct sockaddr_storage) \
364 * sizeof (struct sockaddr_storage)))
367 /* Functions to convert between host and network byte order.
369 Please note that these functions normally take `unsigned long int' or
370 `unsigned short int' values as arguments and also return them. But
371 this was a short-sighted decision since on different systems the types
372 may have different representations but the values are always the same. */
374 extern uint32_t ntohl (uint32_t __netlong
) __THROW
__attribute__ ((__const__
));
375 extern uint16_t ntohs (uint16_t __netshort
)
376 __THROW
__attribute__ ((__const__
));
377 extern uint32_t htonl (uint32_t __hostlong
)
378 __THROW
__attribute__ ((__const__
));
379 extern uint16_t htons (uint16_t __hostshort
)
380 __THROW
__attribute__ ((__const__
));
384 /* Get machine dependent optimized versions of byte swapping functions. */
385 #include <bits/byteswap.h>
386 #include <bits/uintn-identity.h>
389 /* We can optimize calls to the conversion functions. Either nothing has
390 to be done or we are using directly the byte-swapping functions which
391 often can be inlined. */
392 # if __BYTE_ORDER == __BIG_ENDIAN
393 /* The host byte order is the same as network byte order,
394 so these functions are all just identity. */
395 # define ntohl(x) __uint32_identity (x)
396 # define ntohs(x) __uint16_identity (x)
397 # define htonl(x) __uint32_identity (x)
398 # define htons(x) __uint16_identity (x)
400 # if __BYTE_ORDER == __LITTLE_ENDIAN
401 # define ntohl(x) __bswap_32 (x)
402 # define ntohs(x) __bswap_16 (x)
403 # define htonl(x) __bswap_32 (x)
404 # define htons(x) __bswap_16 (x)
410 # define IN6_IS_ADDR_UNSPECIFIED(a) \
412 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
413 __a->__in6_u.__u6_addr32[0] == 0 \
414 && __a->__in6_u.__u6_addr32[1] == 0 \
415 && __a->__in6_u.__u6_addr32[2] == 0 \
416 && __a->__in6_u.__u6_addr32[3] == 0; }))
418 # define IN6_IS_ADDR_LOOPBACK(a) \
420 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
421 __a->__in6_u.__u6_addr32[0] == 0 \
422 && __a->__in6_u.__u6_addr32[1] == 0 \
423 && __a->__in6_u.__u6_addr32[2] == 0 \
424 && __a->__in6_u.__u6_addr32[3] == htonl (1); }))
426 # define IN6_IS_ADDR_LINKLOCAL(a) \
428 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
429 (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfe800000); }))
431 # define IN6_IS_ADDR_SITELOCAL(a) \
433 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
434 (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfec00000); }))
436 # define IN6_IS_ADDR_V4MAPPED(a) \
438 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
439 __a->__in6_u.__u6_addr32[0] == 0 \
440 && __a->__in6_u.__u6_addr32[1] == 0 \
441 && __a->__in6_u.__u6_addr32[2] == htonl (0xffff); }))
443 # define IN6_IS_ADDR_V4COMPAT(a) \
445 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
446 __a->__in6_u.__u6_addr32[0] == 0 \
447 && __a->__in6_u.__u6_addr32[1] == 0 \
448 && __a->__in6_u.__u6_addr32[2] == 0 \
449 && ntohl (__a->__in6_u.__u6_addr32[3]) > 1; }))
451 # define IN6_ARE_ADDR_EQUAL(a,b) \
453 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
454 const struct in6_addr *__b = (const struct in6_addr *) (b); \
455 __a->__in6_u.__u6_addr32[0] == __b->__in6_u.__u6_addr32[0] \
456 && __a->__in6_u.__u6_addr32[1] == __b->__in6_u.__u6_addr32[1] \
457 && __a->__in6_u.__u6_addr32[2] == __b->__in6_u.__u6_addr32[2] \
458 && __a->__in6_u.__u6_addr32[3] == __b->__in6_u.__u6_addr32[3]; }))
460 # define IN6_IS_ADDR_UNSPECIFIED(a) \
461 (((const uint32_t *) (a))[0] == 0 \
462 && ((const uint32_t *) (a))[1] == 0 \
463 && ((const uint32_t *) (a))[2] == 0 \
464 && ((const uint32_t *) (a))[3] == 0)
466 # define IN6_IS_ADDR_LOOPBACK(a) \
467 (((const uint32_t *) (a))[0] == 0 \
468 && ((const uint32_t *) (a))[1] == 0 \
469 && ((const uint32_t *) (a))[2] == 0 \
470 && ((const uint32_t *) (a))[3] == htonl (1))
472 # define IN6_IS_ADDR_LINKLOCAL(a) \
473 ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \
474 == htonl (0xfe800000))
476 # define IN6_IS_ADDR_SITELOCAL(a) \
477 ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \
478 == htonl (0xfec00000))
480 # define IN6_IS_ADDR_V4MAPPED(a) \
481 ((((const uint32_t *) (a))[0] == 0) \
482 && (((const uint32_t *) (a))[1] == 0) \
483 && (((const uint32_t *) (a))[2] == htonl (0xffff)))
485 # define IN6_IS_ADDR_V4COMPAT(a) \
486 ((((const uint32_t *) (a))[0] == 0) \
487 && (((const uint32_t *) (a))[1] == 0) \
488 && (((const uint32_t *) (a))[2] == 0) \
489 && (ntohl (((const uint32_t *) (a))[3]) > 1))
491 # define IN6_ARE_ADDR_EQUAL(a,b) \
492 ((((const uint32_t *) (a))[0] == ((const uint32_t *) (b))[0]) \
493 && (((const uint32_t *) (a))[1] == ((const uint32_t *) (b))[1]) \
494 && (((const uint32_t *) (a))[2] == ((const uint32_t *) (b))[2]) \
495 && (((const uint32_t *) (a))[3] == ((const uint32_t *) (b))[3]))
498 #define IN6_IS_ADDR_MULTICAST(a) (((const uint8_t *) (a))[0] == 0xff)
501 /* Bind socket to a privileged IP port. */
502 extern int bindresvport (int __sockfd
, struct sockaddr_in
*__sock_in
) __THROW
;
504 /* The IPv6 version of this function. */
505 extern int bindresvport6 (int __sockfd
, struct sockaddr_in6
*__sock_in
)
510 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
511 (IN6_IS_ADDR_MULTICAST(a) \
512 && ((((const uint8_t *) (a))[1] & 0xf) == 0x1))
514 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
515 (IN6_IS_ADDR_MULTICAST(a) \
516 && ((((const uint8_t *) (a))[1] & 0xf) == 0x2))
518 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
519 (IN6_IS_ADDR_MULTICAST(a) \
520 && ((((const uint8_t *) (a))[1] & 0xf) == 0x5))
522 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
523 (IN6_IS_ADDR_MULTICAST(a) \
524 && ((((const uint8_t *) (a))[1] & 0xf) == 0x8))
526 #define IN6_IS_ADDR_MC_GLOBAL(a) \
527 (IN6_IS_ADDR_MULTICAST(a) \
528 && ((((const uint8_t *) (a))[1] & 0xf) == 0xe))
532 struct cmsghdr
; /* Forward declaration. */
534 #if !__USE_KERNEL_IPV6_DEFS
535 /* IPv6 packet information. */
538 struct in6_addr ipi6_addr
; /* src/dst IPv6 address */
539 unsigned int ipi6_ifindex
; /* send/recv interface index */
542 /* IPv6 MTU information. */
545 struct sockaddr_in6 ip6m_addr
; /* dst address including zone ID */
546 uint32_t ip6m_mtu
; /* path MTU in host byte order */
548 #endif /* !__USE_KERNEL_IPV6_DEFS */
550 /* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */
551 extern int inet6_option_space (int __nbytes
)
552 __THROW __attribute_deprecated__
;
553 extern int inet6_option_init (void *__bp
, struct cmsghdr
**__cmsgp
,
554 int __type
) __THROW __attribute_deprecated__
;
555 extern int inet6_option_append (struct cmsghdr
*__cmsg
,
556 const uint8_t *__typep
, int __multx
,
557 int __plusy
) __THROW __attribute_deprecated__
;
558 extern uint8_t *inet6_option_alloc (struct cmsghdr
*__cmsg
, int __datalen
,
559 int __multx
, int __plusy
)
560 __THROW __attribute_deprecated__
;
561 extern int inet6_option_next (const struct cmsghdr
*__cmsg
,
563 __THROW __attribute_deprecated__
;
564 extern int inet6_option_find (const struct cmsghdr
*__cmsg
,
565 uint8_t **__tptrp
, int __type
)
566 __THROW __attribute_deprecated__
;
569 /* Hop-by-Hop and Destination Options Processing (RFC 3542). */
570 extern int inet6_opt_init (void *__extbuf
, socklen_t __extlen
) __THROW
;
571 extern int inet6_opt_append (void *__extbuf
, socklen_t __extlen
, int __offset
,
572 uint8_t __type
, socklen_t __len
, uint8_t __align
,
573 void **__databufp
) __THROW
;
574 extern int inet6_opt_finish (void *__extbuf
, socklen_t __extlen
, int __offset
)
576 extern int inet6_opt_set_val (void *__databuf
, int __offset
, void *__val
,
577 socklen_t __vallen
) __THROW
;
578 extern int inet6_opt_next (void *__extbuf
, socklen_t __extlen
, int __offset
,
579 uint8_t *__typep
, socklen_t
*__lenp
,
580 void **__databufp
) __THROW
;
581 extern int inet6_opt_find (void *__extbuf
, socklen_t __extlen
, int __offset
,
582 uint8_t __type
, socklen_t
*__lenp
,
583 void **__databufp
) __THROW
;
584 extern int inet6_opt_get_val (void *__databuf
, int __offset
, void *__val
,
585 socklen_t __vallen
) __THROW
;
588 /* Routing Header Option (RFC 3542). */
589 extern socklen_t
inet6_rth_space (int __type
, int __segments
) __THROW
;
590 extern void *inet6_rth_init (void *__bp
, socklen_t __bp_len
, int __type
,
591 int __segments
) __THROW
;
592 extern int inet6_rth_add (void *__bp
, const struct in6_addr
*__addr
) __THROW
;
593 extern int inet6_rth_reverse (const void *__in
, void *__out
) __THROW
;
594 extern int inet6_rth_segments (const void *__bp
) __THROW
;
595 extern struct in6_addr
*inet6_rth_getaddr (const void *__bp
, int __index
)
599 /* Multicast source filter support. */
601 /* Get IPv4 source filter. */
602 extern int getipv4sourcefilter (int __s
, struct in_addr __interface_addr
,
603 struct in_addr __group
, uint32_t *__fmode
,
604 uint32_t *__numsrc
, struct in_addr
*__slist
)
607 /* Set IPv4 source filter. */
608 extern int setipv4sourcefilter (int __s
, struct in_addr __interface_addr
,
609 struct in_addr __group
, uint32_t __fmode
,
611 const struct in_addr
*__slist
)
615 /* Get source filter. */
616 extern int getsourcefilter (int __s
, uint32_t __interface_addr
,
617 const struct sockaddr
*__group
,
618 socklen_t __grouplen
, uint32_t *__fmode
,
620 struct sockaddr_storage
*__slist
) __THROW
;
622 /* Set source filter. */
623 extern int setsourcefilter (int __s
, uint32_t __interface_addr
,
624 const struct sockaddr
*__group
,
625 socklen_t __grouplen
, uint32_t __fmode
,
627 const struct sockaddr_storage
*__slist
) __THROW
;
632 #endif /* netinet/in.h */