Line data Source code
1 : /* Copyright (C) 1991-2022 Free Software Foundation, Inc.
2 : This file is part of the GNU C Library.
3 :
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.
8 :
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.
13 :
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 : <https://www.gnu.org/licenses/>. */
17 :
18 : #ifndef _NETINET_IN_H
19 : #define _NETINET_IN_H 1
20 :
21 : #include <features.h>
22 : #include <bits/stdint-uintn.h>
23 : #include <sys/socket.h>
24 : #include <bits/types.h>
25 :
26 :
27 : __BEGIN_DECLS
28 :
29 : /* Internet address. */
30 : typedef uint32_t in_addr_t;
31 : struct in_addr
32 : {
33 : in_addr_t s_addr;
34 : };
35 :
36 : /* Get system-specific definitions. */
37 : #include <bits/in.h>
38 :
39 : /* Standard well-defined IP protocols. */
40 : enum
41 : {
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_ETHERNET = 143, /* Ethernet-within-IPv6 Encapsulation. */
91 : #define IPPROTO_ETHERNET IPPROTO_ETHERNET
92 : IPPROTO_RAW = 255, /* Raw IP packets. */
93 : #define IPPROTO_RAW IPPROTO_RAW
94 : IPPROTO_MPTCP = 262, /* Multipath TCP connection. */
95 : #define IPPROTO_MPTCP IPPROTO_MPTCP
96 : IPPROTO_MAX
97 : };
98 :
99 : /* If __USE_KERNEL_IPV6_DEFS is 1 then the user has included the kernel
100 : network headers first and we should use those ABI-identical definitions
101 : instead of our own, otherwise 0. */
102 : #if !__USE_KERNEL_IPV6_DEFS
103 : enum
104 : {
105 : IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */
106 : #define IPPROTO_HOPOPTS IPPROTO_HOPOPTS
107 : IPPROTO_ROUTING = 43, /* IPv6 routing header. */
108 : #define IPPROTO_ROUTING IPPROTO_ROUTING
109 : IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */
110 : #define IPPROTO_FRAGMENT IPPROTO_FRAGMENT
111 : IPPROTO_ICMPV6 = 58, /* ICMPv6. */
112 : #define IPPROTO_ICMPV6 IPPROTO_ICMPV6
113 : IPPROTO_NONE = 59, /* IPv6 no next header. */
114 : #define IPPROTO_NONE IPPROTO_NONE
115 : IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */
116 : #define IPPROTO_DSTOPTS IPPROTO_DSTOPTS
117 : IPPROTO_MH = 135 /* IPv6 mobility header. */
118 : #define IPPROTO_MH IPPROTO_MH
119 : };
120 : #endif /* !__USE_KERNEL_IPV6_DEFS */
121 :
122 : /* Type to represent a port. */
123 : typedef uint16_t in_port_t;
124 :
125 : /* Standard well-known ports. */
126 : enum
127 : {
128 : IPPORT_ECHO = 7, /* Echo service. */
129 : IPPORT_DISCARD = 9, /* Discard transmissions service. */
130 : IPPORT_SYSTAT = 11, /* System status service. */
131 : IPPORT_DAYTIME = 13, /* Time of day service. */
132 : IPPORT_NETSTAT = 15, /* Network status service. */
133 : IPPORT_FTP = 21, /* File Transfer Protocol. */
134 : IPPORT_TELNET = 23, /* Telnet protocol. */
135 : IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */
136 : IPPORT_TIMESERVER = 37, /* Timeserver service. */
137 : IPPORT_NAMESERVER = 42, /* Domain Name Service. */
138 : IPPORT_WHOIS = 43, /* Internet Whois service. */
139 : IPPORT_MTP = 57,
140 :
141 : IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
142 : IPPORT_RJE = 77,
143 : IPPORT_FINGER = 79, /* Finger service. */
144 : IPPORT_TTYLINK = 87,
145 : IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
146 :
147 :
148 : IPPORT_EXECSERVER = 512, /* execd service. */
149 : IPPORT_LOGINSERVER = 513, /* rlogind service. */
150 : IPPORT_CMDSERVER = 514,
151 : IPPORT_EFSSERVER = 520,
152 :
153 : /* UDP ports. */
154 : IPPORT_BIFFUDP = 512,
155 : IPPORT_WHOSERVER = 513,
156 : IPPORT_ROUTESERVER = 520,
157 :
158 : /* Ports less than this value are reserved for privileged processes. */
159 : IPPORT_RESERVED = 1024,
160 :
161 : /* Ports greater this value are reserved for (non-privileged) servers. */
162 : IPPORT_USERRESERVED = 5000
163 : };
164 :
165 : /* Definitions of the bits in an Internet address integer.
166 :
167 : On subnets, host and network parts are found according to
168 : the subnet mask, not these masks. */
169 :
170 : #define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0)
171 : #define IN_CLASSA_NET 0xff000000
172 : #define IN_CLASSA_NSHIFT 24
173 : #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
174 : #define IN_CLASSA_MAX 128
175 :
176 : #define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000)
177 : #define IN_CLASSB_NET 0xffff0000
178 : #define IN_CLASSB_NSHIFT 16
179 : #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
180 : #define IN_CLASSB_MAX 65536
181 :
182 : #define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000)
183 : #define IN_CLASSC_NET 0xffffff00
184 : #define IN_CLASSC_NSHIFT 8
185 : #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
186 :
187 : #define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
188 : #define IN_MULTICAST(a) IN_CLASSD(a)
189 :
190 : #define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
191 : #define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
192 :
193 : /* Address to accept any incoming messages. */
194 : #define INADDR_ANY ((in_addr_t) 0x00000000)
195 : /* Address to send to all hosts. */
196 : #define INADDR_BROADCAST ((in_addr_t) 0xffffffff)
197 : /* Address indicating an error return. */
198 : #define INADDR_NONE ((in_addr_t) 0xffffffff)
199 : /* Dummy address for source of ICMPv6 errors converted to IPv4 (RFC
200 : 7600). */
201 : #define INADDR_DUMMY ((in_addr_t) 0xc0000008)
202 :
203 : /* Network number for local host loopback. */
204 : #define IN_LOOPBACKNET 127
205 : /* Address to loopback in software to local host. */
206 : #ifndef INADDR_LOOPBACK
207 : # define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */
208 : #endif
209 :
210 : /* Defines for Multicast INADDR. */
211 : #define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */
212 : #define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */
213 : #define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */
214 : #define INADDR_ALLSNOOPERS_GROUP ((in_addr_t) 0xe000006a) /* 224.0.0.106 */
215 : #define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */
216 :
217 : #if !__USE_KERNEL_IPV6_DEFS
218 : /* IPv6 address */
219 : struct in6_addr
220 : {
221 : union
222 : {
223 : uint8_t __u6_addr8[16];
224 : uint16_t __u6_addr16[8];
225 : uint32_t __u6_addr32[4];
226 : } __in6_u;
227 : #define s6_addr __in6_u.__u6_addr8
228 : #ifdef __USE_MISC
229 : # define s6_addr16 __in6_u.__u6_addr16
230 : # define s6_addr32 __in6_u.__u6_addr32
231 : #endif
232 : };
233 : #endif /* !__USE_KERNEL_IPV6_DEFS */
234 :
235 : extern const struct in6_addr in6addr_any; /* :: */
236 : extern const struct in6_addr in6addr_loopback; /* ::1 */
237 : #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
238 : #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
239 :
240 : #define INET_ADDRSTRLEN 16
241 : #define INET6_ADDRSTRLEN 46
242 :
243 :
244 : /* Structure describing an Internet socket address. */
245 : struct sockaddr_in
246 : {
247 : __SOCKADDR_COMMON (sin_);
248 : in_port_t sin_port; /* Port number. */
249 : struct in_addr sin_addr; /* Internet address. */
250 :
251 : /* Pad to size of `struct sockaddr'. */
252 : unsigned char sin_zero[sizeof (struct sockaddr)
253 : - __SOCKADDR_COMMON_SIZE
254 : - sizeof (in_port_t)
255 : - sizeof (struct in_addr)];
256 : };
257 :
258 : #if !__USE_KERNEL_IPV6_DEFS
259 : /* Ditto, for IPv6. */
260 : struct sockaddr_in6
261 : {
262 : __SOCKADDR_COMMON (sin6_);
263 : in_port_t sin6_port; /* Transport layer port # */
264 : uint32_t sin6_flowinfo; /* IPv6 flow information */
265 : struct in6_addr sin6_addr; /* IPv6 address */
266 : uint32_t sin6_scope_id; /* IPv6 scope-id */
267 : };
268 : #endif /* !__USE_KERNEL_IPV6_DEFS */
269 :
270 : #ifdef __USE_MISC
271 : /* IPv4 multicast request. */
272 : struct ip_mreq
273 : {
274 : /* IP multicast address of group. */
275 : struct in_addr imr_multiaddr;
276 :
277 : /* Local IP address of interface. */
278 : struct in_addr imr_interface;
279 : };
280 :
281 : struct ip_mreq_source
282 : {
283 : /* IP multicast address of group. */
284 : struct in_addr imr_multiaddr;
285 :
286 : /* IP address of interface. */
287 : struct in_addr imr_interface;
288 :
289 : /* IP address of source. */
290 : struct in_addr imr_sourceaddr;
291 : };
292 : #endif
293 :
294 : #if !__USE_KERNEL_IPV6_DEFS
295 : /* Likewise, for IPv6. */
296 : struct ipv6_mreq
297 : {
298 : /* IPv6 multicast address of group */
299 : struct in6_addr ipv6mr_multiaddr;
300 :
301 : /* local interface */
302 : unsigned int ipv6mr_interface;
303 : };
304 : #endif /* !__USE_KERNEL_IPV6_DEFS */
305 :
306 : #ifdef __USE_MISC
307 : /* Multicast group request. */
308 : struct group_req
309 : {
310 : /* Interface index. */
311 : uint32_t gr_interface;
312 :
313 : /* Group address. */
314 : struct sockaddr_storage gr_group;
315 : };
316 :
317 : struct group_source_req
318 : {
319 : /* Interface index. */
320 : uint32_t gsr_interface;
321 :
322 : /* Group address. */
323 : struct sockaddr_storage gsr_group;
324 :
325 : /* Source address. */
326 : struct sockaddr_storage gsr_source;
327 : };
328 :
329 :
330 : /* Full-state filter operations. */
331 : struct ip_msfilter
332 : {
333 : /* IP multicast address of group. */
334 : struct in_addr imsf_multiaddr;
335 :
336 : /* Local IP address of interface. */
337 : struct in_addr imsf_interface;
338 :
339 : /* Filter mode. */
340 : uint32_t imsf_fmode;
341 :
342 : /* Number of source addresses. */
343 : uint32_t imsf_numsrc;
344 : /* Source addresses. */
345 : struct in_addr imsf_slist[1];
346 : };
347 :
348 : #define IP_MSFILTER_SIZE(numsrc) (sizeof (struct ip_msfilter) \
349 : - sizeof (struct in_addr) \
350 : + (numsrc) * sizeof (struct in_addr))
351 :
352 : struct group_filter
353 : {
354 : /* Interface index. */
355 : uint32_t gf_interface;
356 :
357 : /* Group address. */
358 : struct sockaddr_storage gf_group;
359 :
360 : /* Filter mode. */
361 : uint32_t gf_fmode;
362 :
363 : /* Number of source addresses. */
364 : uint32_t gf_numsrc;
365 : /* Source addresses. */
366 : struct sockaddr_storage gf_slist[1];
367 : };
368 :
369 : #define GROUP_FILTER_SIZE(numsrc) (sizeof (struct group_filter) \
370 : - sizeof (struct sockaddr_storage) \
371 : + ((numsrc) \
372 : * sizeof (struct sockaddr_storage)))
373 : #endif
374 :
375 : /* Functions to convert between host and network byte order.
376 :
377 : Please note that these functions normally take `unsigned long int' or
378 : `unsigned short int' values as arguments and also return them. But
379 : this was a short-sighted decision since on different systems the types
380 : may have different representations but the values are always the same. */
381 :
382 : extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__));
383 : extern uint16_t ntohs (uint16_t __netshort)
384 : __THROW __attribute__ ((__const__));
385 : extern uint32_t htonl (uint32_t __hostlong)
386 : __THROW __attribute__ ((__const__));
387 : extern uint16_t htons (uint16_t __hostshort)
388 : __THROW __attribute__ ((__const__));
389 :
390 : #include <endian.h>
391 :
392 : /* Get machine dependent optimized versions of byte swapping functions. */
393 : #include <bits/byteswap.h>
394 : #include <bits/uintn-identity.h>
395 :
396 : #ifdef __OPTIMIZE__
397 : /* We can optimize calls to the conversion functions. Either nothing has
398 : to be done or we are using directly the byte-swapping functions which
399 : often can be inlined. */
400 : # if __BYTE_ORDER == __BIG_ENDIAN
401 : /* The host byte order is the same as network byte order,
402 : so these functions are all just identity. */
403 : # define ntohl(x) __uint32_identity (x)
404 : # define ntohs(x) __uint16_identity (x)
405 : # define htonl(x) __uint32_identity (x)
406 : # define htons(x) __uint16_identity (x)
407 : # else
408 : # if __BYTE_ORDER == __LITTLE_ENDIAN
409 : # define ntohl(x) __bswap_32 (x)
410 : # define ntohs(x) __bswap_16 (x)
411 : # define htonl(x) __bswap_32 (x)
412 : # define htons(x) __bswap_16 (x)
413 : # endif
414 : # endif
415 : #endif
416 :
417 : #ifdef __GNUC__
418 : # define IN6_IS_ADDR_UNSPECIFIED(a) \
419 : (__extension__ \
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] == 0; }))
425 :
426 : # define IN6_IS_ADDR_LOOPBACK(a) \
427 : (__extension__ \
428 : ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
429 : __a->__in6_u.__u6_addr32[0] == 0 \
430 : && __a->__in6_u.__u6_addr32[1] == 0 \
431 : && __a->__in6_u.__u6_addr32[2] == 0 \
432 : && __a->__in6_u.__u6_addr32[3] == htonl (1); }))
433 :
434 : # define IN6_IS_ADDR_LINKLOCAL(a) \
435 : (__extension__ \
436 : ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
437 : (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfe800000); }))
438 :
439 : # define IN6_IS_ADDR_SITELOCAL(a) \
440 : (__extension__ \
441 : ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
442 : (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfec00000); }))
443 :
444 : # define IN6_IS_ADDR_V4MAPPED(a) \
445 : (__extension__ \
446 : ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
447 : __a->__in6_u.__u6_addr32[0] == 0 \
448 : && __a->__in6_u.__u6_addr32[1] == 0 \
449 : && __a->__in6_u.__u6_addr32[2] == htonl (0xffff); }))
450 :
451 : # define IN6_IS_ADDR_V4COMPAT(a) \
452 : (__extension__ \
453 : ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
454 : __a->__in6_u.__u6_addr32[0] == 0 \
455 : && __a->__in6_u.__u6_addr32[1] == 0 \
456 : && __a->__in6_u.__u6_addr32[2] == 0 \
457 : && ntohl (__a->__in6_u.__u6_addr32[3]) > 1; }))
458 :
459 : # define IN6_ARE_ADDR_EQUAL(a,b) \
460 : (__extension__ \
461 : ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \
462 : const struct in6_addr *__b = (const struct in6_addr *) (b); \
463 : __a->__in6_u.__u6_addr32[0] == __b->__in6_u.__u6_addr32[0] \
464 : && __a->__in6_u.__u6_addr32[1] == __b->__in6_u.__u6_addr32[1] \
465 : && __a->__in6_u.__u6_addr32[2] == __b->__in6_u.__u6_addr32[2] \
466 : && __a->__in6_u.__u6_addr32[3] == __b->__in6_u.__u6_addr32[3]; }))
467 : #else
468 : # define IN6_IS_ADDR_UNSPECIFIED(a) \
469 : (((const uint32_t *) (a))[0] == 0 \
470 : && ((const uint32_t *) (a))[1] == 0 \
471 : && ((const uint32_t *) (a))[2] == 0 \
472 : && ((const uint32_t *) (a))[3] == 0)
473 :
474 : # define IN6_IS_ADDR_LOOPBACK(a) \
475 : (((const uint32_t *) (a))[0] == 0 \
476 : && ((const uint32_t *) (a))[1] == 0 \
477 : && ((const uint32_t *) (a))[2] == 0 \
478 : && ((const uint32_t *) (a))[3] == htonl (1))
479 :
480 : # define IN6_IS_ADDR_LINKLOCAL(a) \
481 : ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \
482 : == htonl (0xfe800000))
483 :
484 : # define IN6_IS_ADDR_SITELOCAL(a) \
485 : ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \
486 : == htonl (0xfec00000))
487 :
488 : # define IN6_IS_ADDR_V4MAPPED(a) \
489 : ((((const uint32_t *) (a))[0] == 0) \
490 : && (((const uint32_t *) (a))[1] == 0) \
491 : && (((const uint32_t *) (a))[2] == htonl (0xffff)))
492 :
493 : # define IN6_IS_ADDR_V4COMPAT(a) \
494 : ((((const uint32_t *) (a))[0] == 0) \
495 : && (((const uint32_t *) (a))[1] == 0) \
496 : && (((const uint32_t *) (a))[2] == 0) \
497 : && (ntohl (((const uint32_t *) (a))[3]) > 1))
498 :
499 : # define IN6_ARE_ADDR_EQUAL(a,b) \
500 : ((((const uint32_t *) (a))[0] == ((const uint32_t *) (b))[0]) \
501 : && (((const uint32_t *) (a))[1] == ((const uint32_t *) (b))[1]) \
502 : && (((const uint32_t *) (a))[2] == ((const uint32_t *) (b))[2]) \
503 : && (((const uint32_t *) (a))[3] == ((const uint32_t *) (b))[3]))
504 : #endif
505 :
506 : #define IN6_IS_ADDR_MULTICAST(a) (((const uint8_t *) (a))[0] == 0xff)
507 :
508 : #ifdef __USE_MISC
509 : /* Bind socket to a privileged IP port. */
510 0 : extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW;
511 :
512 : /* The IPv6 version of this function. */
513 : extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in)
514 : __THROW;
515 : #endif
516 :
517 :
518 : #define IN6_IS_ADDR_MC_NODELOCAL(a) \
519 : (IN6_IS_ADDR_MULTICAST(a) \
520 : && ((((const uint8_t *) (a))[1] & 0xf) == 0x1))
521 :
522 : #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
523 : (IN6_IS_ADDR_MULTICAST(a) \
524 : && ((((const uint8_t *) (a))[1] & 0xf) == 0x2))
525 0 :
526 : #define IN6_IS_ADDR_MC_SITELOCAL(a) \
527 : (IN6_IS_ADDR_MULTICAST(a) \
528 : && ((((const uint8_t *) (a))[1] & 0xf) == 0x5))
529 :
530 : #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
531 : (IN6_IS_ADDR_MULTICAST(a) \
532 : && ((((const uint8_t *) (a))[1] & 0xf) == 0x8))
533 :
534 : #define IN6_IS_ADDR_MC_GLOBAL(a) \
535 : (IN6_IS_ADDR_MULTICAST(a) \
536 : && ((((const uint8_t *) (a))[1] & 0xf) == 0xe))
537 :
538 :
539 : #ifdef __USE_GNU
540 : struct cmsghdr; /* Forward declaration. */
541 :
542 : #if !__USE_KERNEL_IPV6_DEFS
543 : /* IPv6 packet information. */
544 : struct in6_pktinfo
545 : {
546 : struct in6_addr ipi6_addr; /* src/dst IPv6 address */
547 : unsigned int ipi6_ifindex; /* send/recv interface index */
548 : };
549 :
550 : /* IPv6 MTU information. */
551 : struct ip6_mtuinfo
552 : {
553 : struct sockaddr_in6 ip6m_addr; /* dst address including zone ID */
554 : uint32_t ip6m_mtu; /* path MTU in host byte order */
555 : };
556 : #endif /* !__USE_KERNEL_IPV6_DEFS */
557 :
558 : /* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */
559 : extern int inet6_option_space (int __nbytes)
560 : __THROW __attribute_deprecated__;
561 : extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp,
562 : int __type) __THROW __attribute_deprecated__;
563 : extern int inet6_option_append (struct cmsghdr *__cmsg,
564 : const uint8_t *__typep, int __multx,
565 : int __plusy) __THROW __attribute_deprecated__;
566 : extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen,
567 : int __multx, int __plusy)
568 : __THROW __attribute_deprecated__;
569 : extern int inet6_option_next (const struct cmsghdr *__cmsg,
570 : uint8_t **__tptrp)
571 : __THROW __attribute_deprecated__;
572 : extern int inet6_option_find (const struct cmsghdr *__cmsg,
573 : uint8_t **__tptrp, int __type)
574 : __THROW __attribute_deprecated__;
575 :
576 :
577 : /* Hop-by-Hop and Destination Options Processing (RFC 3542). */
578 : extern int inet6_opt_init (void *__extbuf, socklen_t __extlen) __THROW;
579 : extern int inet6_opt_append (void *__extbuf, socklen_t __extlen, int __offset,
580 : uint8_t __type, socklen_t __len, uint8_t __align,
581 : void **__databufp) __THROW;
582 : extern int inet6_opt_finish (void *__extbuf, socklen_t __extlen, int __offset)
583 : __THROW;
584 : extern int inet6_opt_set_val (void *__databuf, int __offset, void *__val,
585 : socklen_t __vallen) __THROW;
586 : extern int inet6_opt_next (void *__extbuf, socklen_t __extlen, int __offset,
587 : uint8_t *__typep, socklen_t *__lenp,
588 : void **__databufp) __THROW;
589 : extern int inet6_opt_find (void *__extbuf, socklen_t __extlen, int __offset,
590 : uint8_t __type, socklen_t *__lenp,
591 : void **__databufp) __THROW;
592 : extern int inet6_opt_get_val (void *__databuf, int __offset, void *__val,
593 : socklen_t __vallen) __THROW;
594 :
595 :
596 : /* Routing Header Option (RFC 3542). */
597 : extern socklen_t inet6_rth_space (int __type, int __segments) __THROW;
598 : extern void *inet6_rth_init (void *__bp, socklen_t __bp_len, int __type,
599 : int __segments) __THROW;
600 : extern int inet6_rth_add (void *__bp, const struct in6_addr *__addr) __THROW;
601 : extern int inet6_rth_reverse (const void *__in, void *__out) __THROW;
602 : extern int inet6_rth_segments (const void *__bp) __THROW;
603 : extern struct in6_addr *inet6_rth_getaddr (const void *__bp, int __index)
604 : __THROW;
605 :
606 :
607 : /* Multicast source filter support. */
608 :
609 : /* Get IPv4 source filter. */
610 : extern int getipv4sourcefilter (int __s, struct in_addr __interface_addr,
611 : struct in_addr __group, uint32_t *__fmode,
612 : uint32_t *__numsrc, struct in_addr *__slist)
613 : __THROW;
614 :
615 : /* Set IPv4 source filter. */
616 : extern int setipv4sourcefilter (int __s, struct in_addr __interface_addr,
617 : struct in_addr __group, uint32_t __fmode,
618 : uint32_t __numsrc,
619 : const struct in_addr *__slist)
620 : __THROW;
621 :
622 :
623 : /* Get source filter. */
624 : extern int getsourcefilter (int __s, uint32_t __interface_addr,
625 : const struct sockaddr *__group,
626 : socklen_t __grouplen, uint32_t *__fmode,
627 : uint32_t *__numsrc,
628 : struct sockaddr_storage *__slist) __THROW;
629 :
630 : /* Set source filter. */
631 : extern int setsourcefilter (int __s, uint32_t __interface_addr,
632 : const struct sockaddr *__group,
633 : socklen_t __grouplen, uint32_t __fmode,
634 : uint32_t __numsrc,
635 : const struct sockaddr_storage *__slist) __THROW;
636 : #endif /* use GNU */
637 :
638 : __END_DECLS
639 :
640 : #endif /* netinet/in.h */
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