1 | /* Copyright (C) 1991-2024 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_L2TP = 115, /* Layer 2 Tunnelling Protocol. */ |
85 | #define IPPROTO_L2TP IPPROTO_L2TP |
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_MPLS = 137, /* MPLS in IP. */ |
91 | #define IPPROTO_MPLS IPPROTO_MPLS |
92 | IPPROTO_ETHERNET = 143, /* Ethernet-within-IPv6 Encapsulation. */ |
93 | #define IPPROTO_ETHERNET IPPROTO_ETHERNET |
94 | IPPROTO_RAW = 255, /* Raw IP packets. */ |
95 | #define IPPROTO_RAW IPPROTO_RAW |
96 | IPPROTO_MPTCP = 262, /* Multipath TCP connection. */ |
97 | #define IPPROTO_MPTCP IPPROTO_MPTCP |
98 | IPPROTO_MAX |
99 | }; |
100 | |
101 | /* If __USE_KERNEL_IPV6_DEFS is 1 then the user has included the kernel |
102 | network headers first and we should use those ABI-identical definitions |
103 | instead of our own, otherwise 0. */ |
104 | #if !__USE_KERNEL_IPV6_DEFS |
105 | enum |
106 | { |
107 | IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */ |
108 | #define IPPROTO_HOPOPTS IPPROTO_HOPOPTS |
109 | IPPROTO_ROUTING = 43, /* IPv6 routing header. */ |
110 | #define IPPROTO_ROUTING IPPROTO_ROUTING |
111 | IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */ |
112 | #define IPPROTO_FRAGMENT IPPROTO_FRAGMENT |
113 | IPPROTO_ICMPV6 = 58, /* ICMPv6. */ |
114 | #define IPPROTO_ICMPV6 IPPROTO_ICMPV6 |
115 | IPPROTO_NONE = 59, /* IPv6 no next header. */ |
116 | #define IPPROTO_NONE IPPROTO_NONE |
117 | IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */ |
118 | #define IPPROTO_DSTOPTS IPPROTO_DSTOPTS |
119 | IPPROTO_MH = 135 /* IPv6 mobility header. */ |
120 | #define IPPROTO_MH IPPROTO_MH |
121 | }; |
122 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
123 | |
124 | /* Type to represent a port. */ |
125 | typedef uint16_t in_port_t; |
126 | |
127 | /* Standard well-known ports. */ |
128 | enum |
129 | { |
130 | IPPORT_ECHO = 7, /* Echo service. */ |
131 | IPPORT_DISCARD = 9, /* Discard transmissions service. */ |
132 | IPPORT_SYSTAT = 11, /* System status service. */ |
133 | IPPORT_DAYTIME = 13, /* Time of day service. */ |
134 | IPPORT_NETSTAT = 15, /* Network status service. */ |
135 | IPPORT_FTP = 21, /* File Transfer Protocol. */ |
136 | IPPORT_TELNET = 23, /* Telnet protocol. */ |
137 | IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */ |
138 | IPPORT_TIMESERVER = 37, /* Timeserver service. */ |
139 | IPPORT_NAMESERVER = 42, /* Domain Name Service. */ |
140 | IPPORT_WHOIS = 43, /* Internet Whois service. */ |
141 | IPPORT_MTP = 57, |
142 | |
143 | IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */ |
144 | IPPORT_RJE = 77, |
145 | IPPORT_FINGER = 79, /* Finger service. */ |
146 | IPPORT_TTYLINK = 87, |
147 | IPPORT_SUPDUP = 95, /* SUPDUP protocol. */ |
148 | |
149 | |
150 | IPPORT_EXECSERVER = 512, /* execd service. */ |
151 | IPPORT_LOGINSERVER = 513, /* rlogind service. */ |
152 | IPPORT_CMDSERVER = 514, |
153 | IPPORT_EFSSERVER = 520, |
154 | |
155 | /* UDP ports. */ |
156 | IPPORT_BIFFUDP = 512, |
157 | IPPORT_WHOSERVER = 513, |
158 | IPPORT_ROUTESERVER = 520, |
159 | |
160 | /* Ports less than this value are reserved for privileged processes. */ |
161 | IPPORT_RESERVED = 1024, |
162 | |
163 | /* Ports greater this value are reserved for (non-privileged) servers. */ |
164 | IPPORT_USERRESERVED = 5000 |
165 | }; |
166 | |
167 | /* Definitions of the bits in an Internet address integer. |
168 | |
169 | On subnets, host and network parts are found according to |
170 | the subnet mask, not these masks. */ |
171 | |
172 | #define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0) |
173 | #define IN_CLASSA_NET 0xff000000 |
174 | #define IN_CLASSA_NSHIFT 24 |
175 | #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET) |
176 | #define IN_CLASSA_MAX 128 |
177 | |
178 | #define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000) |
179 | #define IN_CLASSB_NET 0xffff0000 |
180 | #define IN_CLASSB_NSHIFT 16 |
181 | #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET) |
182 | #define IN_CLASSB_MAX 65536 |
183 | |
184 | #define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000) |
185 | #define IN_CLASSC_NET 0xffffff00 |
186 | #define IN_CLASSC_NSHIFT 8 |
187 | #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET) |
188 | |
189 | #define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000) |
190 | #define IN_MULTICAST(a) IN_CLASSD(a) |
191 | |
192 | #define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000) |
193 | #define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000) |
194 | |
195 | /* Address to accept any incoming messages. */ |
196 | #define INADDR_ANY ((in_addr_t) 0x00000000) |
197 | /* Address to send to all hosts. */ |
198 | #define INADDR_BROADCAST ((in_addr_t) 0xffffffff) |
199 | /* Address indicating an error return. */ |
200 | #define INADDR_NONE ((in_addr_t) 0xffffffff) |
201 | /* Dummy address for source of ICMPv6 errors converted to IPv4 (RFC |
202 | 7600). */ |
203 | #define INADDR_DUMMY ((in_addr_t) 0xc0000008) |
204 | |
205 | /* Network number for local host loopback. */ |
206 | #define IN_LOOPBACKNET 127 |
207 | /* Address to loopback in software to local host. */ |
208 | #ifndef INADDR_LOOPBACK |
209 | # define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */ |
210 | #endif |
211 | |
212 | /* Defines for Multicast INADDR. */ |
213 | #define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */ |
214 | #define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */ |
215 | #define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */ |
216 | #define INADDR_ALLSNOOPERS_GROUP ((in_addr_t) 0xe000006a) /* 224.0.0.106 */ |
217 | #define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */ |
218 | |
219 | #if !__USE_KERNEL_IPV6_DEFS |
220 | /* IPv6 address */ |
221 | struct in6_addr |
222 | { |
223 | union |
224 | { |
225 | uint8_t __u6_addr8[16]; |
226 | uint16_t __u6_addr16[8]; |
227 | uint32_t __u6_addr32[4]; |
228 | } __in6_u; |
229 | #define s6_addr __in6_u.__u6_addr8 |
230 | #ifdef __USE_MISC |
231 | # define s6_addr16 __in6_u.__u6_addr16 |
232 | # define s6_addr32 __in6_u.__u6_addr32 |
233 | #endif |
234 | }; |
235 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
236 | |
237 | extern const struct in6_addr in6addr_any; /* :: */ |
238 | extern const struct in6_addr in6addr_loopback; /* ::1 */ |
239 | #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } } |
240 | #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } } |
241 | |
242 | #define INET_ADDRSTRLEN 16 |
243 | #define INET6_ADDRSTRLEN 46 |
244 | |
245 | |
246 | /* Structure describing an Internet socket address. */ |
247 | struct sockaddr_in |
248 | { |
249 | __SOCKADDR_COMMON (sin_); |
250 | in_port_t sin_port; /* Port number. */ |
251 | struct in_addr sin_addr; /* Internet address. */ |
252 | |
253 | /* Pad to size of `struct sockaddr'. */ |
254 | unsigned char sin_zero[sizeof (struct sockaddr) |
255 | - __SOCKADDR_COMMON_SIZE |
256 | - sizeof (in_port_t) |
257 | - sizeof (struct in_addr)]; |
258 | }; |
259 | |
260 | #if !__USE_KERNEL_IPV6_DEFS |
261 | /* Ditto, for IPv6. */ |
262 | struct sockaddr_in6 |
263 | { |
264 | __SOCKADDR_COMMON (sin6_); |
265 | in_port_t sin6_port; /* Transport layer port # */ |
266 | uint32_t sin6_flowinfo; /* IPv6 flow information */ |
267 | struct in6_addr sin6_addr; /* IPv6 address */ |
268 | uint32_t sin6_scope_id; /* IPv6 scope-id */ |
269 | }; |
270 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
271 | |
272 | #ifdef __USE_MISC |
273 | /* IPv4 multicast request. */ |
274 | struct ip_mreq |
275 | { |
276 | /* IP multicast address of group. */ |
277 | struct in_addr imr_multiaddr; |
278 | |
279 | /* Local IP address of interface. */ |
280 | struct in_addr imr_interface; |
281 | }; |
282 | |
283 | /* IPv4 multicast request with interface index. */ |
284 | struct ip_mreqn |
285 | { |
286 | /* IP multicast address of group. */ |
287 | struct in_addr imr_multiaddr; |
288 | |
289 | /* Local IP address of interface. */ |
290 | struct in_addr imr_address; |
291 | |
292 | /* Interface index. */ |
293 | int imr_ifindex; |
294 | }; |
295 | |
296 | struct ip_mreq_source |
297 | { |
298 | /* IP multicast address of group. */ |
299 | struct in_addr imr_multiaddr; |
300 | |
301 | /* IP address of interface. */ |
302 | struct in_addr imr_interface; |
303 | |
304 | /* IP address of source. */ |
305 | struct in_addr imr_sourceaddr; |
306 | }; |
307 | #endif |
308 | |
309 | #if !__USE_KERNEL_IPV6_DEFS |
310 | /* Likewise, for IPv6. */ |
311 | struct ipv6_mreq |
312 | { |
313 | /* IPv6 multicast address of group */ |
314 | struct in6_addr ipv6mr_multiaddr; |
315 | |
316 | /* local interface */ |
317 | unsigned int ipv6mr_interface; |
318 | }; |
319 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
320 | |
321 | #ifdef __USE_MISC |
322 | /* Multicast group request. */ |
323 | struct group_req |
324 | { |
325 | /* Interface index. */ |
326 | uint32_t gr_interface; |
327 | |
328 | /* Group address. */ |
329 | struct sockaddr_storage gr_group; |
330 | }; |
331 | |
332 | struct group_source_req |
333 | { |
334 | /* Interface index. */ |
335 | uint32_t gsr_interface; |
336 | |
337 | /* Group address. */ |
338 | struct sockaddr_storage gsr_group; |
339 | |
340 | /* Source address. */ |
341 | struct sockaddr_storage gsr_source; |
342 | }; |
343 | |
344 | |
345 | /* Full-state filter operations. */ |
346 | struct ip_msfilter |
347 | { |
348 | /* IP multicast address of group. */ |
349 | struct in_addr imsf_multiaddr; |
350 | |
351 | /* Local IP address of interface. */ |
352 | struct in_addr imsf_interface; |
353 | |
354 | /* Filter mode. */ |
355 | uint32_t imsf_fmode; |
356 | |
357 | /* Number of source addresses. */ |
358 | uint32_t imsf_numsrc; |
359 | /* Source addresses. */ |
360 | struct in_addr imsf_slist[1]; |
361 | }; |
362 | |
363 | #define IP_MSFILTER_SIZE(numsrc) (sizeof (struct ip_msfilter) \ |
364 | - sizeof (struct in_addr) \ |
365 | + (numsrc) * sizeof (struct in_addr)) |
366 | |
367 | struct group_filter |
368 | { |
369 | /* Interface index. */ |
370 | uint32_t gf_interface; |
371 | |
372 | /* Group address. */ |
373 | struct sockaddr_storage gf_group; |
374 | |
375 | /* Filter mode. */ |
376 | uint32_t gf_fmode; |
377 | |
378 | /* Number of source addresses. */ |
379 | uint32_t gf_numsrc; |
380 | /* Source addresses. */ |
381 | struct sockaddr_storage gf_slist[1]; |
382 | }; |
383 | |
384 | #define GROUP_FILTER_SIZE(numsrc) (sizeof (struct group_filter) \ |
385 | - sizeof (struct sockaddr_storage) \ |
386 | + ((numsrc) \ |
387 | * sizeof (struct sockaddr_storage))) |
388 | #endif |
389 | |
390 | /* Functions to convert between host and network byte order. |
391 | |
392 | Please note that these functions normally take `unsigned long int' or |
393 | `unsigned short int' values as arguments and also return them. But |
394 | this was a short-sighted decision since on different systems the types |
395 | may have different representations but the values are always the same. */ |
396 | |
397 | extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__)); |
398 | extern uint16_t ntohs (uint16_t __netshort) |
399 | __THROW __attribute__ ((__const__)); |
400 | extern uint32_t htonl (uint32_t __hostlong) |
401 | __THROW __attribute__ ((__const__)); |
402 | extern uint16_t htons (uint16_t __hostshort) |
403 | __THROW __attribute__ ((__const__)); |
404 | |
405 | #include <endian.h> |
406 | |
407 | /* Get machine dependent optimized versions of byte swapping functions. */ |
408 | #include <bits/byteswap.h> |
409 | #include <bits/uintn-identity.h> |
410 | |
411 | #ifdef __OPTIMIZE__ |
412 | /* We can optimize calls to the conversion functions. Either nothing has |
413 | to be done or we are using directly the byte-swapping functions which |
414 | often can be inlined. */ |
415 | # if __BYTE_ORDER == __BIG_ENDIAN |
416 | /* The host byte order is the same as network byte order, |
417 | so these functions are all just identity. */ |
418 | # define ntohl(x) __uint32_identity (x) |
419 | # define ntohs(x) __uint16_identity (x) |
420 | # define htonl(x) __uint32_identity (x) |
421 | # define htons(x) __uint16_identity (x) |
422 | # else |
423 | # if __BYTE_ORDER == __LITTLE_ENDIAN |
424 | # define ntohl(x) __bswap_32 (x) |
425 | # define ntohs(x) __bswap_16 (x) |
426 | # define htonl(x) __bswap_32 (x) |
427 | # define htons(x) __bswap_16 (x) |
428 | # endif |
429 | # endif |
430 | #endif |
431 | |
432 | #ifdef __GNUC__ |
433 | # define IN6_IS_ADDR_UNSPECIFIED(a) \ |
434 | (__extension__ \ |
435 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
436 | __a->__in6_u.__u6_addr32[0] == 0 \ |
437 | && __a->__in6_u.__u6_addr32[1] == 0 \ |
438 | && __a->__in6_u.__u6_addr32[2] == 0 \ |
439 | && __a->__in6_u.__u6_addr32[3] == 0; })) |
440 | |
441 | # define IN6_IS_ADDR_LOOPBACK(a) \ |
442 | (__extension__ \ |
443 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
444 | __a->__in6_u.__u6_addr32[0] == 0 \ |
445 | && __a->__in6_u.__u6_addr32[1] == 0 \ |
446 | && __a->__in6_u.__u6_addr32[2] == 0 \ |
447 | && __a->__in6_u.__u6_addr32[3] == htonl (1); })) |
448 | |
449 | # define IN6_IS_ADDR_LINKLOCAL(a) \ |
450 | (__extension__ \ |
451 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
452 | (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfe800000); })) |
453 | |
454 | # define IN6_IS_ADDR_SITELOCAL(a) \ |
455 | (__extension__ \ |
456 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
457 | (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfec00000); })) |
458 | |
459 | # define IN6_IS_ADDR_V4MAPPED(a) \ |
460 | (__extension__ \ |
461 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
462 | __a->__in6_u.__u6_addr32[0] == 0 \ |
463 | && __a->__in6_u.__u6_addr32[1] == 0 \ |
464 | && __a->__in6_u.__u6_addr32[2] == htonl (0xffff); })) |
465 | |
466 | # define IN6_IS_ADDR_V4COMPAT(a) \ |
467 | (__extension__ \ |
468 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
469 | __a->__in6_u.__u6_addr32[0] == 0 \ |
470 | && __a->__in6_u.__u6_addr32[1] == 0 \ |
471 | && __a->__in6_u.__u6_addr32[2] == 0 \ |
472 | && ntohl (__a->__in6_u.__u6_addr32[3]) > 1; })) |
473 | |
474 | # define IN6_ARE_ADDR_EQUAL(a,b) \ |
475 | (__extension__ \ |
476 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
477 | const struct in6_addr *__b = (const struct in6_addr *) (b); \ |
478 | __a->__in6_u.__u6_addr32[0] == __b->__in6_u.__u6_addr32[0] \ |
479 | && __a->__in6_u.__u6_addr32[1] == __b->__in6_u.__u6_addr32[1] \ |
480 | && __a->__in6_u.__u6_addr32[2] == __b->__in6_u.__u6_addr32[2] \ |
481 | && __a->__in6_u.__u6_addr32[3] == __b->__in6_u.__u6_addr32[3]; })) |
482 | #else |
483 | # define IN6_IS_ADDR_UNSPECIFIED(a) \ |
484 | (((const uint32_t *) (a))[0] == 0 \ |
485 | && ((const uint32_t *) (a))[1] == 0 \ |
486 | && ((const uint32_t *) (a))[2] == 0 \ |
487 | && ((const uint32_t *) (a))[3] == 0) |
488 | |
489 | # define IN6_IS_ADDR_LOOPBACK(a) \ |
490 | (((const uint32_t *) (a))[0] == 0 \ |
491 | && ((const uint32_t *) (a))[1] == 0 \ |
492 | && ((const uint32_t *) (a))[2] == 0 \ |
493 | && ((const uint32_t *) (a))[3] == htonl (1)) |
494 | |
495 | # define IN6_IS_ADDR_LINKLOCAL(a) \ |
496 | ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \ |
497 | == htonl (0xfe800000)) |
498 | |
499 | # define IN6_IS_ADDR_SITELOCAL(a) \ |
500 | ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \ |
501 | == htonl (0xfec00000)) |
502 | |
503 | # define IN6_IS_ADDR_V4MAPPED(a) \ |
504 | ((((const uint32_t *) (a))[0] == 0) \ |
505 | && (((const uint32_t *) (a))[1] == 0) \ |
506 | && (((const uint32_t *) (a))[2] == htonl (0xffff))) |
507 | |
508 | # define IN6_IS_ADDR_V4COMPAT(a) \ |
509 | ((((const uint32_t *) (a))[0] == 0) \ |
510 | && (((const uint32_t *) (a))[1] == 0) \ |
511 | && (((const uint32_t *) (a))[2] == 0) \ |
512 | && (ntohl (((const uint32_t *) (a))[3]) > 1)) |
513 | |
514 | # define IN6_ARE_ADDR_EQUAL(a,b) \ |
515 | ((((const uint32_t *) (a))[0] == ((const uint32_t *) (b))[0]) \ |
516 | && (((const uint32_t *) (a))[1] == ((const uint32_t *) (b))[1]) \ |
517 | && (((const uint32_t *) (a))[2] == ((const uint32_t *) (b))[2]) \ |
518 | && (((const uint32_t *) (a))[3] == ((const uint32_t *) (b))[3])) |
519 | #endif |
520 | |
521 | #define IN6_IS_ADDR_MULTICAST(a) (((const uint8_t *) (a))[0] == 0xff) |
522 | |
523 | #ifdef __USE_MISC |
524 | /* Bind socket to a privileged IP port. */ |
525 | extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW; |
526 | |
527 | /* The IPv6 version of this function. */ |
528 | extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in) |
529 | __THROW; |
530 | #endif |
531 | |
532 | |
533 | #define IN6_IS_ADDR_MC_NODELOCAL(a) \ |
534 | (IN6_IS_ADDR_MULTICAST(a) \ |
535 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x1)) |
536 | |
537 | #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ |
538 | (IN6_IS_ADDR_MULTICAST(a) \ |
539 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x2)) |
540 | |
541 | #define IN6_IS_ADDR_MC_SITELOCAL(a) \ |
542 | (IN6_IS_ADDR_MULTICAST(a) \ |
543 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x5)) |
544 | |
545 | #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ |
546 | (IN6_IS_ADDR_MULTICAST(a) \ |
547 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x8)) |
548 | |
549 | #define IN6_IS_ADDR_MC_GLOBAL(a) \ |
550 | (IN6_IS_ADDR_MULTICAST(a) \ |
551 | && ((((const uint8_t *) (a))[1] & 0xf) == 0xe)) |
552 | |
553 | |
554 | #ifdef __USE_GNU |
555 | struct cmsghdr; /* Forward declaration. */ |
556 | |
557 | #if !__USE_KERNEL_IPV6_DEFS |
558 | /* IPv6 packet information. */ |
559 | struct in6_pktinfo |
560 | { |
561 | struct in6_addr ipi6_addr; /* src/dst IPv6 address */ |
562 | unsigned int ipi6_ifindex; /* send/recv interface index */ |
563 | }; |
564 | |
565 | /* IPv6 MTU information. */ |
566 | struct ip6_mtuinfo |
567 | { |
568 | struct sockaddr_in6 ip6m_addr; /* dst address including zone ID */ |
569 | uint32_t ip6m_mtu; /* path MTU in host byte order */ |
570 | }; |
571 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
572 | |
573 | /* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */ |
574 | extern int inet6_option_space (int __nbytes) |
575 | __THROW __attribute_deprecated__; |
576 | extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp, |
577 | int __type) __THROW __attribute_deprecated__; |
578 | extern int inet6_option_append (struct cmsghdr *__cmsg, |
579 | const uint8_t *__typep, int __multx, |
580 | int __plusy) __THROW __attribute_deprecated__; |
581 | extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen, |
582 | int __multx, int __plusy) |
583 | __THROW __attribute_deprecated__; |
584 | extern int inet6_option_next (const struct cmsghdr *__cmsg, |
585 | uint8_t **__tptrp) |
586 | __THROW __attribute_deprecated__; |
587 | extern int inet6_option_find (const struct cmsghdr *__cmsg, |
588 | uint8_t **__tptrp, int __type) |
589 | __THROW __attribute_deprecated__; |
590 | |
591 | |
592 | /* Hop-by-Hop and Destination Options Processing (RFC 3542). */ |
593 | extern int inet6_opt_init (void *__extbuf, socklen_t __extlen) __THROW; |
594 | extern int inet6_opt_append (void *__extbuf, socklen_t __extlen, int __offset, |
595 | uint8_t __type, socklen_t __len, uint8_t __align, |
596 | void **__databufp) __THROW; |
597 | extern int inet6_opt_finish (void *__extbuf, socklen_t __extlen, int __offset) |
598 | __THROW; |
599 | extern int inet6_opt_set_val (void *__databuf, int __offset, void *__val, |
600 | socklen_t __vallen) __THROW; |
601 | extern int inet6_opt_next (void *__extbuf, socklen_t __extlen, int __offset, |
602 | uint8_t *__typep, socklen_t *__lenp, |
603 | void **__databufp) __THROW; |
604 | extern int inet6_opt_find (void *__extbuf, socklen_t __extlen, int __offset, |
605 | uint8_t __type, socklen_t *__lenp, |
606 | void **__databufp) __THROW; |
607 | extern int inet6_opt_get_val (void *__databuf, int __offset, void *__val, |
608 | socklen_t __vallen) __THROW; |
609 | |
610 | |
611 | /* Routing Header Option (RFC 3542). */ |
612 | extern socklen_t inet6_rth_space (int __type, int __segments) __THROW; |
613 | extern void *inet6_rth_init (void *__bp, socklen_t __bp_len, int __type, |
614 | int __segments) __THROW; |
615 | extern int inet6_rth_add (void *__bp, const struct in6_addr *__addr) __THROW; |
616 | extern int inet6_rth_reverse (const void *__in, void *__out) __THROW; |
617 | extern int inet6_rth_segments (const void *__bp) __THROW; |
618 | extern struct in6_addr *inet6_rth_getaddr (const void *__bp, int __index) |
619 | __THROW; |
620 | |
621 | |
622 | /* Multicast source filter support. */ |
623 | |
624 | /* Get IPv4 source filter. */ |
625 | extern int getipv4sourcefilter (int __s, struct in_addr __interface_addr, |
626 | struct in_addr __group, uint32_t *__fmode, |
627 | uint32_t *__numsrc, struct in_addr *__slist) |
628 | __THROW; |
629 | |
630 | /* Set IPv4 source filter. */ |
631 | extern int setipv4sourcefilter (int __s, struct in_addr __interface_addr, |
632 | struct in_addr __group, uint32_t __fmode, |
633 | uint32_t __numsrc, |
634 | const struct in_addr *__slist) |
635 | __THROW; |
636 | |
637 | |
638 | /* Get source filter. */ |
639 | extern int getsourcefilter (int __s, uint32_t __interface_addr, |
640 | const struct sockaddr *__group, |
641 | socklen_t __grouplen, uint32_t *__fmode, |
642 | uint32_t *__numsrc, |
643 | struct sockaddr_storage *__slist) __THROW; |
644 | |
645 | /* Set source filter. */ |
646 | extern int setsourcefilter (int __s, uint32_t __interface_addr, |
647 | const struct sockaddr *__group, |
648 | socklen_t __grouplen, uint32_t __fmode, |
649 | uint32_t __numsrc, |
650 | const struct sockaddr_storage *__slist) __THROW; |
651 | #endif /* use GNU */ |
652 | |
653 | __END_DECLS |
654 | |
655 | #endif /* netinet/in.h */ |
656 | |