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 __attribute_struct_may_alias__ 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 | struct __attribute_struct_may_alias__ sockaddr_in6; |
262 | #else |
263 | /* Ditto, for IPv6. */ |
264 | struct __attribute_struct_may_alias__ sockaddr_in6 |
265 | { |
266 | __SOCKADDR_COMMON (sin6_); |
267 | in_port_t sin6_port; /* Transport layer port # */ |
268 | uint32_t sin6_flowinfo; /* IPv6 flow information */ |
269 | struct in6_addr sin6_addr; /* IPv6 address */ |
270 | uint32_t sin6_scope_id; /* IPv6 scope-id */ |
271 | }; |
272 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
273 | |
274 | #ifdef __USE_MISC |
275 | /* IPv4 multicast request. */ |
276 | struct ip_mreq |
277 | { |
278 | /* IP multicast address of group. */ |
279 | struct in_addr imr_multiaddr; |
280 | |
281 | /* Local IP address of interface. */ |
282 | struct in_addr imr_interface; |
283 | }; |
284 | |
285 | /* IPv4 multicast request with interface index. */ |
286 | struct ip_mreqn |
287 | { |
288 | /* IP multicast address of group. */ |
289 | struct in_addr imr_multiaddr; |
290 | |
291 | /* Local IP address of interface. */ |
292 | struct in_addr imr_address; |
293 | |
294 | /* Interface index. */ |
295 | int imr_ifindex; |
296 | }; |
297 | |
298 | struct ip_mreq_source |
299 | { |
300 | /* IP multicast address of group. */ |
301 | struct in_addr imr_multiaddr; |
302 | |
303 | /* IP address of interface. */ |
304 | struct in_addr imr_interface; |
305 | |
306 | /* IP address of source. */ |
307 | struct in_addr imr_sourceaddr; |
308 | }; |
309 | #endif |
310 | |
311 | #if !__USE_KERNEL_IPV6_DEFS |
312 | /* Likewise, for IPv6. */ |
313 | struct ipv6_mreq |
314 | { |
315 | /* IPv6 multicast address of group */ |
316 | struct in6_addr ipv6mr_multiaddr; |
317 | |
318 | /* local interface */ |
319 | unsigned int ipv6mr_interface; |
320 | }; |
321 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
322 | |
323 | #ifdef __USE_MISC |
324 | /* Multicast group request. */ |
325 | struct group_req |
326 | { |
327 | /* Interface index. */ |
328 | uint32_t gr_interface; |
329 | |
330 | /* Group address. */ |
331 | struct sockaddr_storage gr_group; |
332 | }; |
333 | |
334 | struct group_source_req |
335 | { |
336 | /* Interface index. */ |
337 | uint32_t gsr_interface; |
338 | |
339 | /* Group address. */ |
340 | struct sockaddr_storage gsr_group; |
341 | |
342 | /* Source address. */ |
343 | struct sockaddr_storage gsr_source; |
344 | }; |
345 | |
346 | |
347 | /* Full-state filter operations. */ |
348 | struct ip_msfilter |
349 | { |
350 | /* IP multicast address of group. */ |
351 | struct in_addr imsf_multiaddr; |
352 | |
353 | /* Local IP address of interface. */ |
354 | struct in_addr imsf_interface; |
355 | |
356 | /* Filter mode. */ |
357 | uint32_t imsf_fmode; |
358 | |
359 | /* Number of source addresses. */ |
360 | uint32_t imsf_numsrc; |
361 | /* Source addresses. */ |
362 | struct in_addr imsf_slist[1]; |
363 | }; |
364 | |
365 | #define IP_MSFILTER_SIZE(numsrc) (sizeof (struct ip_msfilter) \ |
366 | - sizeof (struct in_addr) \ |
367 | + (numsrc) * sizeof (struct in_addr)) |
368 | |
369 | struct group_filter |
370 | { |
371 | /* Interface index. */ |
372 | uint32_t gf_interface; |
373 | |
374 | /* Group address. */ |
375 | struct sockaddr_storage gf_group; |
376 | |
377 | /* Filter mode. */ |
378 | uint32_t gf_fmode; |
379 | |
380 | /* Number of source addresses. */ |
381 | uint32_t gf_numsrc; |
382 | /* Source addresses. */ |
383 | struct sockaddr_storage gf_slist[1]; |
384 | }; |
385 | |
386 | #define GROUP_FILTER_SIZE(numsrc) (sizeof (struct group_filter) \ |
387 | - sizeof (struct sockaddr_storage) \ |
388 | + ((numsrc) \ |
389 | * sizeof (struct sockaddr_storage))) |
390 | #endif |
391 | |
392 | /* Functions to convert between host and network byte order. |
393 | |
394 | Please note that these functions normally take `unsigned long int' or |
395 | `unsigned short int' values as arguments and also return them. But |
396 | this was a short-sighted decision since on different systems the types |
397 | may have different representations but the values are always the same. */ |
398 | |
399 | extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__)); |
400 | extern uint16_t ntohs (uint16_t __netshort) |
401 | __THROW __attribute__ ((__const__)); |
402 | extern uint32_t htonl (uint32_t __hostlong) |
403 | __THROW __attribute__ ((__const__)); |
404 | extern uint16_t htons (uint16_t __hostshort) |
405 | __THROW __attribute__ ((__const__)); |
406 | |
407 | #include <endian.h> |
408 | |
409 | /* Get machine dependent optimized versions of byte swapping functions. */ |
410 | #include <bits/byteswap.h> |
411 | #include <bits/uintn-identity.h> |
412 | |
413 | #ifdef __OPTIMIZE__ |
414 | /* We can optimize calls to the conversion functions. Either nothing has |
415 | to be done or we are using directly the byte-swapping functions which |
416 | often can be inlined. */ |
417 | # if __BYTE_ORDER == __BIG_ENDIAN |
418 | /* The host byte order is the same as network byte order, |
419 | so these functions are all just identity. */ |
420 | # define ntohl(x) __uint32_identity (x) |
421 | # define ntohs(x) __uint16_identity (x) |
422 | # define htonl(x) __uint32_identity (x) |
423 | # define htons(x) __uint16_identity (x) |
424 | # else |
425 | # if __BYTE_ORDER == __LITTLE_ENDIAN |
426 | # define ntohl(x) __bswap_32 (x) |
427 | # define ntohs(x) __bswap_16 (x) |
428 | # define htonl(x) __bswap_32 (x) |
429 | # define htons(x) __bswap_16 (x) |
430 | # endif |
431 | # endif |
432 | #endif |
433 | |
434 | #ifdef __GNUC__ |
435 | # define IN6_IS_ADDR_UNSPECIFIED(a) \ |
436 | (__extension__ \ |
437 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
438 | __a->__in6_u.__u6_addr32[0] == 0 \ |
439 | && __a->__in6_u.__u6_addr32[1] == 0 \ |
440 | && __a->__in6_u.__u6_addr32[2] == 0 \ |
441 | && __a->__in6_u.__u6_addr32[3] == 0; })) |
442 | |
443 | # define IN6_IS_ADDR_LOOPBACK(a) \ |
444 | (__extension__ \ |
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 | && __a->__in6_u.__u6_addr32[3] == htonl (1); })) |
450 | |
451 | # define IN6_IS_ADDR_LINKLOCAL(a) \ |
452 | (__extension__ \ |
453 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
454 | (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfe800000); })) |
455 | |
456 | # define IN6_IS_ADDR_SITELOCAL(a) \ |
457 | (__extension__ \ |
458 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
459 | (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfec00000); })) |
460 | |
461 | # define IN6_IS_ADDR_V4MAPPED(a) \ |
462 | (__extension__ \ |
463 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
464 | __a->__in6_u.__u6_addr32[0] == 0 \ |
465 | && __a->__in6_u.__u6_addr32[1] == 0 \ |
466 | && __a->__in6_u.__u6_addr32[2] == htonl (0xffff); })) |
467 | |
468 | # define IN6_IS_ADDR_V4COMPAT(a) \ |
469 | (__extension__ \ |
470 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
471 | __a->__in6_u.__u6_addr32[0] == 0 \ |
472 | && __a->__in6_u.__u6_addr32[1] == 0 \ |
473 | && __a->__in6_u.__u6_addr32[2] == 0 \ |
474 | && ntohl (__a->__in6_u.__u6_addr32[3]) > 1; })) |
475 | |
476 | # define IN6_ARE_ADDR_EQUAL(a,b) \ |
477 | (__extension__ \ |
478 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
479 | const struct in6_addr *__b = (const struct in6_addr *) (b); \ |
480 | __a->__in6_u.__u6_addr32[0] == __b->__in6_u.__u6_addr32[0] \ |
481 | && __a->__in6_u.__u6_addr32[1] == __b->__in6_u.__u6_addr32[1] \ |
482 | && __a->__in6_u.__u6_addr32[2] == __b->__in6_u.__u6_addr32[2] \ |
483 | && __a->__in6_u.__u6_addr32[3] == __b->__in6_u.__u6_addr32[3]; })) |
484 | #else |
485 | # define IN6_IS_ADDR_UNSPECIFIED(a) \ |
486 | (((const uint32_t *) (a))[0] == 0 \ |
487 | && ((const uint32_t *) (a))[1] == 0 \ |
488 | && ((const uint32_t *) (a))[2] == 0 \ |
489 | && ((const uint32_t *) (a))[3] == 0) |
490 | |
491 | # define IN6_IS_ADDR_LOOPBACK(a) \ |
492 | (((const uint32_t *) (a))[0] == 0 \ |
493 | && ((const uint32_t *) (a))[1] == 0 \ |
494 | && ((const uint32_t *) (a))[2] == 0 \ |
495 | && ((const uint32_t *) (a))[3] == htonl (1)) |
496 | |
497 | # define IN6_IS_ADDR_LINKLOCAL(a) \ |
498 | ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \ |
499 | == htonl (0xfe800000)) |
500 | |
501 | # define IN6_IS_ADDR_SITELOCAL(a) \ |
502 | ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \ |
503 | == htonl (0xfec00000)) |
504 | |
505 | # define IN6_IS_ADDR_V4MAPPED(a) \ |
506 | ((((const uint32_t *) (a))[0] == 0) \ |
507 | && (((const uint32_t *) (a))[1] == 0) \ |
508 | && (((const uint32_t *) (a))[2] == htonl (0xffff))) |
509 | |
510 | # define IN6_IS_ADDR_V4COMPAT(a) \ |
511 | ((((const uint32_t *) (a))[0] == 0) \ |
512 | && (((const uint32_t *) (a))[1] == 0) \ |
513 | && (((const uint32_t *) (a))[2] == 0) \ |
514 | && (ntohl (((const uint32_t *) (a))[3]) > 1)) |
515 | |
516 | # define IN6_ARE_ADDR_EQUAL(a,b) \ |
517 | ((((const uint32_t *) (a))[0] == ((const uint32_t *) (b))[0]) \ |
518 | && (((const uint32_t *) (a))[1] == ((const uint32_t *) (b))[1]) \ |
519 | && (((const uint32_t *) (a))[2] == ((const uint32_t *) (b))[2]) \ |
520 | && (((const uint32_t *) (a))[3] == ((const uint32_t *) (b))[3])) |
521 | #endif |
522 | |
523 | #define IN6_IS_ADDR_MULTICAST(a) (((const uint8_t *) (a))[0] == 0xff) |
524 | |
525 | #ifdef __USE_MISC |
526 | /* Bind socket to a privileged IP port. */ |
527 | extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW; |
528 | |
529 | /* The IPv6 version of this function. */ |
530 | extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in) |
531 | __THROW; |
532 | #endif |
533 | |
534 | |
535 | #define IN6_IS_ADDR_MC_NODELOCAL(a) \ |
536 | (IN6_IS_ADDR_MULTICAST(a) \ |
537 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x1)) |
538 | |
539 | #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ |
540 | (IN6_IS_ADDR_MULTICAST(a) \ |
541 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x2)) |
542 | |
543 | #define IN6_IS_ADDR_MC_SITELOCAL(a) \ |
544 | (IN6_IS_ADDR_MULTICAST(a) \ |
545 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x5)) |
546 | |
547 | #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ |
548 | (IN6_IS_ADDR_MULTICAST(a) \ |
549 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x8)) |
550 | |
551 | #define IN6_IS_ADDR_MC_GLOBAL(a) \ |
552 | (IN6_IS_ADDR_MULTICAST(a) \ |
553 | && ((((const uint8_t *) (a))[1] & 0xf) == 0xe)) |
554 | |
555 | |
556 | #ifdef __USE_GNU |
557 | struct cmsghdr; /* Forward declaration. */ |
558 | |
559 | #if !__USE_KERNEL_IPV6_DEFS |
560 | /* IPv6 packet information. */ |
561 | struct in6_pktinfo |
562 | { |
563 | struct in6_addr ipi6_addr; /* src/dst IPv6 address */ |
564 | unsigned int ipi6_ifindex; /* send/recv interface index */ |
565 | }; |
566 | |
567 | /* IPv6 MTU information. */ |
568 | struct ip6_mtuinfo |
569 | { |
570 | struct sockaddr_in6 ip6m_addr; /* dst address including zone ID */ |
571 | uint32_t ip6m_mtu; /* path MTU in host byte order */ |
572 | }; |
573 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
574 | |
575 | /* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */ |
576 | extern int inet6_option_space (int __nbytes) |
577 | __THROW __attribute_deprecated__; |
578 | extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp, |
579 | int __type) __THROW __attribute_deprecated__; |
580 | extern int inet6_option_append (struct cmsghdr *__cmsg, |
581 | const uint8_t *__typep, int __multx, |
582 | int __plusy) __THROW __attribute_deprecated__; |
583 | extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen, |
584 | int __multx, int __plusy) |
585 | __THROW __attribute_deprecated__; |
586 | extern int inet6_option_next (const struct cmsghdr *__cmsg, |
587 | uint8_t **__tptrp) |
588 | __THROW __attribute_deprecated__; |
589 | extern int inet6_option_find (const struct cmsghdr *__cmsg, |
590 | uint8_t **__tptrp, int __type) |
591 | __THROW __attribute_deprecated__; |
592 | |
593 | |
594 | /* Hop-by-Hop and Destination Options Processing (RFC 3542). */ |
595 | extern int inet6_opt_init (void *__extbuf, socklen_t __extlen) __THROW; |
596 | extern int inet6_opt_append (void *__extbuf, socklen_t __extlen, int __offset, |
597 | uint8_t __type, socklen_t __len, uint8_t __align, |
598 | void **__databufp) __THROW; |
599 | extern int inet6_opt_finish (void *__extbuf, socklen_t __extlen, int __offset) |
600 | __THROW; |
601 | extern int inet6_opt_set_val (void *__databuf, int __offset, void *__val, |
602 | socklen_t __vallen) __THROW; |
603 | extern int inet6_opt_next (void *__extbuf, socklen_t __extlen, int __offset, |
604 | uint8_t *__typep, socklen_t *__lenp, |
605 | void **__databufp) __THROW; |
606 | extern int inet6_opt_find (void *__extbuf, socklen_t __extlen, int __offset, |
607 | uint8_t __type, socklen_t *__lenp, |
608 | void **__databufp) __THROW; |
609 | extern int inet6_opt_get_val (void *__databuf, int __offset, void *__val, |
610 | socklen_t __vallen) __THROW; |
611 | |
612 | |
613 | /* Routing Header Option (RFC 3542). */ |
614 | extern socklen_t inet6_rth_space (int __type, int __segments) __THROW; |
615 | extern void *inet6_rth_init (void *__bp, socklen_t __bp_len, int __type, |
616 | int __segments) __THROW; |
617 | extern int inet6_rth_add (void *__bp, const struct in6_addr *__addr) __THROW; |
618 | extern int inet6_rth_reverse (const void *__in, void *__out) __THROW; |
619 | extern int inet6_rth_segments (const void *__bp) __THROW; |
620 | extern struct in6_addr *inet6_rth_getaddr (const void *__bp, int __index) |
621 | __THROW; |
622 | |
623 | |
624 | /* Multicast source filter support. */ |
625 | |
626 | /* Get IPv4 source filter. */ |
627 | extern int getipv4sourcefilter (int __s, struct in_addr __interface_addr, |
628 | struct in_addr __group, uint32_t *__fmode, |
629 | uint32_t *__numsrc, struct in_addr *__slist) |
630 | __THROW; |
631 | |
632 | /* Set IPv4 source filter. */ |
633 | extern int setipv4sourcefilter (int __s, struct in_addr __interface_addr, |
634 | struct in_addr __group, uint32_t __fmode, |
635 | uint32_t __numsrc, |
636 | const struct in_addr *__slist) |
637 | __THROW; |
638 | |
639 | |
640 | /* Get source filter. */ |
641 | extern int getsourcefilter (int __s, uint32_t __interface_addr, |
642 | const struct sockaddr *__group, |
643 | socklen_t __grouplen, uint32_t *__fmode, |
644 | uint32_t *__numsrc, |
645 | struct sockaddr_storage *__slist) __THROW; |
646 | |
647 | /* Set source filter. */ |
648 | extern int setsourcefilter (int __s, uint32_t __interface_addr, |
649 | const struct sockaddr *__group, |
650 | socklen_t __grouplen, uint32_t __fmode, |
651 | uint32_t __numsrc, |
652 | const struct sockaddr_storage *__slist) __THROW; |
653 | #endif /* use GNU */ |
654 | |
655 | __END_DECLS |
656 | |
657 | #endif /* netinet/in.h */ |
658 | |