blob: b42121ae3e8b4ae6a03bb7dcf710531c3823014e [file] [log] [blame]
lh9ed821d2023-04-07 01:36:19 -07001/* Copyright (C) 1991-2001, 2003, 2004, 2006, 2007, 2008
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
19
20#ifndef _NETINET_IN_H
21#define _NETINET_IN_H 1
22
23#include <features.h>
24#include <stdint.h>
25#include <sys/socket.h>
26#include <bits/types.h>
27
28
29__BEGIN_DECLS
30
31/* Standard well-defined IP protocols. */
32enum
33 {
34 IPPROTO_IP = 0, /* Dummy protocol for TCP. */
35#define IPPROTO_IP IPPROTO_IP
36 IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */
37#define IPPROTO_HOPOPTS IPPROTO_HOPOPTS
38 IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */
39#define IPPROTO_ICMP IPPROTO_ICMP
40 IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */
41#define IPPROTO_IGMP IPPROTO_IGMP
42 IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */
43#define IPPROTO_IPIP IPPROTO_IPIP
44 IPPROTO_TCP = 6, /* Transmission Control Protocol. */
45#define IPPROTO_TCP IPPROTO_TCP
46 IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */
47#define IPPROTO_EGP IPPROTO_EGP
48 IPPROTO_PUP = 12, /* PUP protocol. */
49#define IPPROTO_PUP IPPROTO_PUP
50 IPPROTO_UDP = 17, /* User Datagram Protocol. */
51#define IPPROTO_UDP IPPROTO_UDP
52 IPPROTO_IDP = 22, /* XNS IDP protocol. */
53#define IPPROTO_IDP IPPROTO_IDP
54 IPPROTO_TP = 29, /* SO Transport Protocol Class 4. */
55#define IPPROTO_TP IPPROTO_TP
56 IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol. */
57#define IPPROTO_DCCP IPPROTO_DCCP
58 IPPROTO_IPV6 = 41, /* IPv6 header. */
59#define IPPROTO_IPV6 IPPROTO_IPV6
60 IPPROTO_ROUTING = 43, /* IPv6 routing header. */
61#define IPPROTO_ROUTING IPPROTO_ROUTING
62 IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */
63#define IPPROTO_FRAGMENT IPPROTO_FRAGMENT
64 IPPROTO_RSVP = 46, /* Reservation Protocol. */
65#define IPPROTO_RSVP IPPROTO_RSVP
66 IPPROTO_GRE = 47, /* General Routing Encapsulation. */
67#define IPPROTO_GRE IPPROTO_GRE
68 IPPROTO_ESP = 50, /* encapsulating security payload. */
69#define IPPROTO_ESP IPPROTO_ESP
70 IPPROTO_AH = 51, /* authentication header. */
71#define IPPROTO_AH IPPROTO_AH
72 IPPROTO_ICMPV6 = 58, /* ICMPv6. */
73#define IPPROTO_ICMPV6 IPPROTO_ICMPV6
74 IPPROTO_NONE = 59, /* IPv6 no next header. */
75#define IPPROTO_NONE IPPROTO_NONE
76 IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */
77#define IPPROTO_DSTOPTS IPPROTO_DSTOPTS
78 IPPROTO_MTP = 92, /* Multicast Transport Protocol. */
79#define IPPROTO_MTP IPPROTO_MTP
80 IPPROTO_ENCAP = 98, /* Encapsulation Header. */
81#define IPPROTO_ENCAP IPPROTO_ENCAP
82 IPPROTO_PIM = 103, /* Protocol Independent Multicast. */
83#define IPPROTO_PIM IPPROTO_PIM
84 IPPROTO_COMP = 108, /* Compression Header Protocol. */
85#define IPPROTO_COMP IPPROTO_COMP
86 IPPROTO_SCTP = 132, /* Stream Control Transmission Protocol. */
87#define IPPROTO_SCTP IPPROTO_SCTP
88 IPPROTO_UDPLITE = 136, /* UDP-Lite protocol. */
89#define IPPROTO_UDPLITE IPPROTO_UDPLITE
90 IPPROTO_RAW = 255, /* Raw IP packets. */
91#define IPPROTO_RAW IPPROTO_RAW
92 IPPROTO_MAX
93 };
94
95
96/* Type to represent a port. */
97typedef uint16_t in_port_t;
98
99/* Standard well-known ports. */
100enum
101 {
102 IPPORT_ECHO = 7, /* Echo service. */
103 IPPORT_DISCARD = 9, /* Discard transmissions service. */
104 IPPORT_SYSTAT = 11, /* System status service. */
105 IPPORT_DAYTIME = 13, /* Time of day service. */
106 IPPORT_NETSTAT = 15, /* Network status service. */
107 IPPORT_FTP = 21, /* File Transfer Protocol. */
108 IPPORT_TELNET = 23, /* Telnet protocol. */
109 IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */
110 IPPORT_TIMESERVER = 37, /* Timeserver service. */
111 IPPORT_NAMESERVER = 42, /* Domain Name Service. */
112 IPPORT_WHOIS = 43, /* Internet Whois service. */
113 IPPORT_MTP = 57,
114
115 IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
116 IPPORT_RJE = 77,
117 IPPORT_FINGER = 79, /* Finger service. */
118 IPPORT_TTYLINK = 87,
119 IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
120
121
122 IPPORT_EXECSERVER = 512, /* execd service. */
123 IPPORT_LOGINSERVER = 513, /* rlogind service. */
124 IPPORT_CMDSERVER = 514,
125 IPPORT_EFSSERVER = 520,
126
127 /* UDP ports. */
128 IPPORT_BIFFUDP = 512,
129 IPPORT_WHOSERVER = 513,
130 IPPORT_ROUTESERVER = 520,
131
132 /* Ports less than this value are reserved for privileged processes. */
133 IPPORT_RESERVED = 1024,
134
135 /* Ports greater this value are reserved for (non-privileged) servers. */
136 IPPORT_USERRESERVED = 5000
137 };
138
139
140/* Internet address. */
141typedef uint32_t in_addr_t;
142struct in_addr
143 {
144 in_addr_t s_addr;
145 };
146
147
148/* Definitions of the bits in an Internet address integer.
149
150 On subnets, host and network parts are found according to
151 the subnet mask, not these masks. */
152
153#define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0)
154#define IN_CLASSA_NET 0xff000000
155#define IN_CLASSA_NSHIFT 24
156#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
157#define IN_CLASSA_MAX 128
158
159#define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000)
160#define IN_CLASSB_NET 0xffff0000
161#define IN_CLASSB_NSHIFT 16
162#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
163#define IN_CLASSB_MAX 65536
164
165#define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000)
166#define IN_CLASSC_NET 0xffffff00
167#define IN_CLASSC_NSHIFT 8
168#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
169
170#define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
171#define IN_MULTICAST(a) IN_CLASSD(a)
172
173#define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
174#define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
175
176/* Address to accept any incoming messages. */
177#define INADDR_ANY ((in_addr_t) 0x00000000)
178/* Address to send to all hosts. */
179#define INADDR_BROADCAST ((in_addr_t) 0xffffffff)
180/* Address indicating an error return. */
181#define INADDR_NONE ((in_addr_t) 0xffffffff)
182
183/* Network number for local host loopback. */
184#define IN_LOOPBACKNET 127
185/* Address to loopback in software to local host. */
186#ifndef INADDR_LOOPBACK
187# define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */
188#endif
189
190/* Defines for Multicast INADDR. */
191#define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */
192#define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */
193#define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */
194#define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */
195
196
197#if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
198/* IPv6 address */
199struct in6_addr
200 {
201 union
202 {
203 uint8_t __u6_addr8[16];
204#if defined __USE_MISC || defined __USE_GNU
205 uint16_t __u6_addr16[8];
206 uint32_t __u6_addr32[4];
207#endif
208 } __in6_u;
209#define s6_addr __in6_u.__u6_addr8
210#if defined __USE_MISC || defined __USE_GNU
211# define s6_addr16 __in6_u.__u6_addr16
212# define s6_addr32 __in6_u.__u6_addr32
213#endif
214 };
215
216#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
217#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
218
219#define INET6_ADDRSTRLEN 46
220#endif
221
222#ifdef __UCLIBC_HAS_IPV6__
223extern const struct in6_addr in6addr_any; /* :: */
224extern const struct in6_addr in6addr_loopback; /* ::1 */
225libc_hidden_proto(in6addr_loopback)
226#endif
227
228#define INET_ADDRSTRLEN 16
229
230
231#if 1 /*def __UCLIBC_HAS_IPV4__*/
232/* Structure describing an Internet socket address. */
233struct sockaddr_in
234 {
235 __SOCKADDR_COMMON (sin_);
236 in_port_t sin_port; /* Port number. */
237 struct in_addr sin_addr; /* Internet address. */
238
239 /* Pad to size of `struct sockaddr'. */
240 unsigned char sin_zero[sizeof (struct sockaddr) -
241 __SOCKADDR_COMMON_SIZE -
242 sizeof (in_port_t) -
243 sizeof (struct in_addr)];
244 };
245#endif
246
247#if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
248/* Ditto, for IPv6. */
249struct sockaddr_in6
250 {
251 __SOCKADDR_COMMON (sin6_);
252 in_port_t sin6_port; /* Transport layer port # */
253 uint32_t sin6_flowinfo; /* IPv6 flow information */
254 struct in6_addr sin6_addr; /* IPv6 address */
255 uint32_t sin6_scope_id; /* IPv6 scope-id */
256 };
257#endif
258
259
260#if defined __USE_MISC || defined __USE_GNU
261/* IPv4 multicast request. */
262struct ip_mreq
263 {
264 /* IP multicast address of group. */
265 struct in_addr imr_multiaddr;
266
267 /* Local IP address of interface. */
268 struct in_addr imr_interface;
269 };
270
271struct ip_mreq_source
272 {
273 /* IP multicast address of group. */
274 struct in_addr imr_multiaddr;
275
276 /* IP address of source. */
277 struct in_addr imr_interface;
278
279 /* IP address of interface. */
280 struct in_addr imr_sourceaddr;
281 };
282#endif
283
284
285#if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
286/* Likewise, for IPv6. */
287struct ipv6_mreq
288 {
289 /* IPv6 multicast address of group */
290 struct in6_addr ipv6mr_multiaddr;
291
292 /* local interface */
293 unsigned int ipv6mr_interface;
294 };
295#endif
296
297
298#if defined __USE_MISC || defined __USE_GNU
299/* Multicast group request. */
300struct group_req
301 {
302 /* Interface index. */
303 uint32_t gr_interface;
304
305 /* Group address. */
306 struct sockaddr_storage gr_group;
307 };
308
309struct group_source_req
310 {
311 /* Interface index. */
312 uint32_t gsr_interface;
313
314 /* Group address. */
315 struct sockaddr_storage gsr_group;
316
317 /* Source address. */
318 struct sockaddr_storage gsr_source;
319 };
320
321
322/* Full-state filter operations. */
323struct ip_msfilter
324 {
325 /* IP multicast address of group. */
326 struct in_addr imsf_multiaddr;
327
328 /* Local IP address of interface. */
329 struct in_addr imsf_interface;
330
331 /* Filter mode. */
332 uint32_t imsf_fmode;
333
334 /* Number of source addresses. */
335 uint32_t imsf_numsrc;
336 /* Source addresses. */
337 struct in_addr imsf_slist[1];
338 };
339
340#define IP_MSFILTER_SIZE(numsrc) (sizeof (struct ip_msfilter) \
341 - sizeof (struct in_addr) \
342 + (numsrc) * sizeof (struct in_addr))
343
344struct group_filter
345 {
346 /* Interface index. */
347 uint32_t gf_interface;
348
349 /* Group address. */
350 struct sockaddr_storage gf_group;
351
352 /* Filter mode. */
353 uint32_t gf_fmode;
354
355 /* Number of source addresses. */
356 uint32_t gf_numsrc;
357 /* Source addresses. */
358 struct sockaddr_storage gf_slist[1];
359};
360
361#define GROUP_FILTER_SIZE(numsrc) (sizeof (struct group_filter) \
362 - sizeof (struct sockaddr_storage) \
363 + ((numsrc) \
364 * sizeof (struct sockaddr_storage)))
365#endif
366
367
368/* Get system-specific definitions. */
369#include <bits/in.h>
370
371/* Functions to convert between host and network byte order.
372
373 Please note that these functions normally take `unsigned long int' or
374 `unsigned short int' values as arguments and also return them. But
375 this was a short-sighted decision since on different systems the types
376 may have different representations but the values are always the same. */
377
378extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__));
379libc_hidden_proto(ntohl)
380extern uint16_t ntohs (uint16_t __netshort)
381 __THROW __attribute__ ((__const__));
382libc_hidden_proto(ntohs)
383extern uint32_t htonl (uint32_t __hostlong)
384 __THROW __attribute__ ((__const__));
385libc_hidden_proto(htonl)
386extern uint16_t htons (uint16_t __hostshort)
387 __THROW __attribute__ ((__const__));
388libc_hidden_proto(htons)
389
390#include <endian.h>
391
392/* Get machine dependent optimized versions of byte swapping functions. */
393#include <bits/byteswap.h>
394
395#ifdef __OPTIMIZE__
396/* We can optimize calls to the conversion functions. Either nothing has
397 to be done or we are using directly the byte-swapping functions which
398 often can be inlined. */
399# if __BYTE_ORDER == __BIG_ENDIAN
400/* The host byte order is the same as network byte order,
401 so these functions are all just identity. */
402# define ntohl(x) (x)
403# define ntohs(x) (x)
404# define htonl(x) (x)
405# define htons(x) (x)
406# else
407# if __BYTE_ORDER == __LITTLE_ENDIAN
408# define ntohl(x) __bswap_32 (x)
409# define ntohs(x) __bswap_16 (x)
410# define htonl(x) __bswap_32 (x)
411# define htons(x) __bswap_16 (x)
412# endif
413# endif
414#endif
415
416#if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
417#define IN6_IS_ADDR_UNSPECIFIED(a) \
418 (((__const uint32_t *) (a))[0] == 0 \
419 && ((__const uint32_t *) (a))[1] == 0 \
420 && ((__const uint32_t *) (a))[2] == 0 \
421 && ((__const uint32_t *) (a))[3] == 0)
422
423#define IN6_IS_ADDR_LOOPBACK(a) \
424 (((__const uint32_t *) (a))[0] == 0 \
425 && ((__const uint32_t *) (a))[1] == 0 \
426 && ((__const uint32_t *) (a))[2] == 0 \
427 && ((__const uint32_t *) (a))[3] == htonl (1))
428
429#define IN6_IS_ADDR_MULTICAST(a) (((__const uint8_t *) (a))[0] == 0xff)
430
431#define IN6_IS_ADDR_LINKLOCAL(a) \
432 ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \
433 == htonl (0xfe800000))
434
435#define IN6_IS_ADDR_SITELOCAL(a) \
436 ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \
437 == htonl (0xfec00000))
438
439#define IN6_IS_ADDR_V4MAPPED(a) \
440 ((((__const uint32_t *) (a))[0] == 0) \
441 && (((__const uint32_t *) (a))[1] == 0) \
442 && (((__const uint32_t *) (a))[2] == htonl (0xffff)))
443
444#define IN6_IS_ADDR_V4COMPAT(a) \
445 ((((__const uint32_t *) (a))[0] == 0) \
446 && (((__const uint32_t *) (a))[1] == 0) \
447 && (((__const uint32_t *) (a))[2] == 0) \
448 && (ntohl (((__const uint32_t *) (a))[3]) > 1))
449
450#define IN6_ARE_ADDR_EQUAL(a,b) \
451 ((((__const uint32_t *) (a))[0] == ((__const uint32_t *) (b))[0]) \
452 && (((__const uint32_t *) (a))[1] == ((__const uint32_t *) (b))[1]) \
453 && (((__const uint32_t *) (a))[2] == ((__const uint32_t *) (b))[2]) \
454 && (((__const uint32_t *) (a))[3] == ((__const uint32_t *) (b))[3]))
455#endif
456
457#if defined __USE_MISC || defined __USE_GNU
458/* Bind socket to a privileged IP port. */
459extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW;
460libc_hidden_proto(bindresvport)
461
462# if 0 /*def __UCLIBC_HAS_IPV6__*/
463/* The IPv6 version of this function. */
464extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in)
465 __THROW;
466# endif
467#endif
468
469
470#if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
471#define IN6_IS_ADDR_MC_NODELOCAL(a) \
472 (IN6_IS_ADDR_MULTICAST(a) \
473 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x1))
474
475#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
476 (IN6_IS_ADDR_MULTICAST(a) \
477 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x2))
478
479#define IN6_IS_ADDR_MC_SITELOCAL(a) \
480 (IN6_IS_ADDR_MULTICAST(a) \
481 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x5))
482
483#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
484 (IN6_IS_ADDR_MULTICAST(a) \
485 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x8))
486
487#define IN6_IS_ADDR_MC_GLOBAL(a) \
488 (IN6_IS_ADDR_MULTICAST(a) \
489 && ((((__const uint8_t *) (a))[1] & 0xf) == 0xe))
490#endif
491
492
493#ifdef __USE_GNU
494# if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
495/* IPv6 packet information. */
496struct in6_pktinfo
497 {
498 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
499 unsigned int ipi6_ifindex; /* send/recv interface index */
500 };
501
502/* IPv6 MTU information. */
503struct ip6_mtuinfo
504 {
505 struct sockaddr_in6 ip6m_addr; /* dst address including zone ID */
506 uint32_t ip6m_mtu; /* path MTU in host byte order */
507 };
508
509
510# if 0
511/* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */
512extern int inet6_option_space (int __nbytes)
513 __THROW __attribute_deprecated__;
514extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp,
515 int __type) __THROW __attribute_deprecated__;
516extern int inet6_option_append (struct cmsghdr *__cmsg,
517 __const uint8_t *__typep, int __multx,
518 int __plusy) __THROW __attribute_deprecated__;
519extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen,
520 int __multx, int __plusy)
521 __THROW __attribute_deprecated__;
522extern int inet6_option_next (__const struct cmsghdr *__cmsg,
523 uint8_t **__tptrp)
524 __THROW __attribute_deprecated__;
525extern int inet6_option_find (__const struct cmsghdr *__cmsg,
526 uint8_t **__tptrp, int __type)
527 __THROW __attribute_deprecated__;
528
529
530/* Hop-by-Hop and Destination Options Processing (RFC 3542). */
531extern int inet6_opt_init (void *__extbuf, socklen_t __extlen) __THROW;
532extern int inet6_opt_append (void *__extbuf, socklen_t __extlen, int __offset,
533 uint8_t __type, socklen_t __len, uint8_t __align,
534 void **__databufp) __THROW;
535extern int inet6_opt_finish (void *__extbuf, socklen_t __extlen, int __offset)
536 __THROW;
537extern int inet6_opt_set_val (void *__databuf, int __offset, void *__val,
538 socklen_t __vallen) __THROW;
539extern int inet6_opt_next (void *__extbuf, socklen_t __extlen, int __offset,
540 uint8_t *__typep, socklen_t *__lenp,
541 void **__databufp) __THROW;
542extern int inet6_opt_find (void *__extbuf, socklen_t __extlen, int __offset,
543 uint8_t __type, socklen_t *__lenp,
544 void **__databufp) __THROW;
545extern int inet6_opt_get_val (void *__databuf, int __offset, void *__val,
546 socklen_t __vallen) __THROW;
547
548
549/* Routing Header Option (RFC 3542). */
550extern socklen_t inet6_rth_space (int __type, int __segments) __THROW;
551extern void *inet6_rth_init (void *__bp, socklen_t __bp_len, int __type,
552 int __segments) __THROW;
553extern int inet6_rth_add (void *__bp, __const struct in6_addr *__addr) __THROW;
554extern int inet6_rth_reverse (__const void *__in, void *__out) __THROW;
555extern int inet6_rth_segments (__const void *__bp) __THROW;
556extern struct in6_addr *inet6_rth_getaddr (__const void *__bp, int __index)
557 __THROW;
558# endif
559# endif
560
561
562# if 0
563/* Multicast source filter support. */
564
565/* Get IPv4 source filter. */
566extern int getipv4sourcefilter (int __s, struct in_addr __interface_addr,
567 struct in_addr __group, uint32_t *__fmode,
568 uint32_t *__numsrc, struct in_addr *__slist)
569 __THROW;
570
571/* Set IPv4 source filter. */
572extern int setipv4sourcefilter (int __s, struct in_addr __interface_addr,
573 struct in_addr __group, uint32_t __fmode,
574 uint32_t __numsrc,
575 __const struct in_addr *__slist)
576 __THROW;
577
578
579/* Get source filter. */
580extern int getsourcefilter (int __s, uint32_t __interface_addr,
581 __const struct sockaddr *__group,
582 socklen_t __grouplen, uint32_t *__fmode,
583 uint32_t *__numsrc,
584 struct sockaddr_storage *__slist) __THROW;
585
586/* Set source filter. */
587extern int setsourcefilter (int __s, uint32_t __interface_addr,
588 __const struct sockaddr *__group,
589 socklen_t __grouplen, uint32_t __fmode,
590 uint32_t __numsrc,
591 __const struct sockaddr_storage *__slist) __THROW;
592# endif
593#endif /* use GNU */
594
595__END_DECLS
596
597#endif /* netinet/in.h */