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dff8da6b | 1 | /* Copyright (C) 1991-2024 Free Software Foundation, Inc. |
54d79e99 UD |
2 | This file is part of the GNU C Library. |
3 | ||
478b92f0 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
54d79e99 UD |
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 | |
478b92f0 | 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
41bdb6e2 | 12 | Lesser General Public License for more details. |
54d79e99 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 RM |
17 | |
18 | #ifndef _NETINET_IN_H | |
28f540f4 | 19 | #define _NETINET_IN_H 1 |
5107cf1d | 20 | |
28f540f4 | 21 | #include <features.h> |
17680430 | 22 | #include <bits/stdint-uintn.h> |
a4596570 | 23 | #include <sys/socket.h> |
3584d5fb | 24 | #include <bits/types.h> |
f8b87ef0 | 25 | |
28f540f4 | 26 | |
1fb05e3d UD |
27 | __BEGIN_DECLS |
28 | ||
6c82a2f8 CD |
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 | ||
df4ef2ab UD |
39 | /* Standard well-defined IP protocols. */ |
40 | enum | |
41 | { | |
3996f34b | 42 | IPPROTO_IP = 0, /* Dummy protocol for TCP. */ |
126f53e8 | 43 | #define IPPROTO_IP IPPROTO_IP |
3996f34b | 44 | IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */ |
126f53e8 | 45 | #define IPPROTO_ICMP IPPROTO_ICMP |
3996f34b | 46 | IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */ |
126f53e8 | 47 | #define IPPROTO_IGMP IPPROTO_IGMP |
3996f34b | 48 | IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */ |
126f53e8 | 49 | #define IPPROTO_IPIP IPPROTO_IPIP |
3996f34b | 50 | IPPROTO_TCP = 6, /* Transmission Control Protocol. */ |
126f53e8 | 51 | #define IPPROTO_TCP IPPROTO_TCP |
3996f34b | 52 | IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */ |
126f53e8 | 53 | #define IPPROTO_EGP IPPROTO_EGP |
3996f34b | 54 | IPPROTO_PUP = 12, /* PUP protocol. */ |
126f53e8 | 55 | #define IPPROTO_PUP IPPROTO_PUP |
3996f34b | 56 | IPPROTO_UDP = 17, /* User Datagram Protocol. */ |
126f53e8 | 57 | #define IPPROTO_UDP IPPROTO_UDP |
3996f34b | 58 | IPPROTO_IDP = 22, /* XNS IDP protocol. */ |
126f53e8 | 59 | #define IPPROTO_IDP IPPROTO_IDP |
085320f5 | 60 | IPPROTO_TP = 29, /* SO Transport Protocol Class 4. */ |
126f53e8 | 61 | #define IPPROTO_TP IPPROTO_TP |
372bfcac UD |
62 | IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol. */ |
63 | #define IPPROTO_DCCP IPPROTO_DCCP | |
3996f34b | 64 | IPPROTO_IPV6 = 41, /* IPv6 header. */ |
126f53e8 | 65 | #define IPPROTO_IPV6 IPPROTO_IPV6 |
085320f5 | 66 | IPPROTO_RSVP = 46, /* Reservation Protocol. */ |
126f53e8 | 67 | #define IPPROTO_RSVP IPPROTO_RSVP |
085320f5 | 68 | IPPROTO_GRE = 47, /* General Routing Encapsulation. */ |
126f53e8 | 69 | #define IPPROTO_GRE IPPROTO_GRE |
3996f34b | 70 | IPPROTO_ESP = 50, /* encapsulating security payload. */ |
126f53e8 | 71 | #define IPPROTO_ESP IPPROTO_ESP |
3996f34b | 72 | IPPROTO_AH = 51, /* authentication header. */ |
126f53e8 | 73 | #define IPPROTO_AH IPPROTO_AH |
085320f5 | 74 | IPPROTO_MTP = 92, /* Multicast Transport Protocol. */ |
126f53e8 | 75 | #define IPPROTO_MTP IPPROTO_MTP |
6c82a2f8 CD |
76 | IPPROTO_BEETPH = 94, /* IP option pseudo header for BEET. */ |
77 | #define IPPROTO_BEETPH IPPROTO_BEETPH | |
085320f5 | 78 | IPPROTO_ENCAP = 98, /* Encapsulation Header. */ |
126f53e8 | 79 | #define IPPROTO_ENCAP IPPROTO_ENCAP |
085320f5 | 80 | IPPROTO_PIM = 103, /* Protocol Independent Multicast. */ |
126f53e8 | 81 | #define IPPROTO_PIM IPPROTO_PIM |
d01d6319 | 82 | IPPROTO_COMP = 108, /* Compression Header Protocol. */ |
126f53e8 | 83 | #define IPPROTO_COMP IPPROTO_COMP |
b5e3d66b JM |
84 | IPPROTO_L2TP = 115, /* Layer 2 Tunnelling Protocol. */ |
85 | #define IPPROTO_L2TP IPPROTO_L2TP | |
5e826ab5 UD |
86 | IPPROTO_SCTP = 132, /* Stream Control Transmission Protocol. */ |
87 | #define IPPROTO_SCTP IPPROTO_SCTP | |
372bfcac UD |
88 | IPPROTO_UDPLITE = 136, /* UDP-Lite protocol. */ |
89 | #define IPPROTO_UDPLITE IPPROTO_UDPLITE | |
04d9a38b JM |
90 | IPPROTO_MPLS = 137, /* MPLS in IP. */ |
91 | #define IPPROTO_MPLS IPPROTO_MPLS | |
f9ac84f9 JM |
92 | IPPROTO_ETHERNET = 143, /* Ethernet-within-IPv6 Encapsulation. */ |
93 | #define IPPROTO_ETHERNET IPPROTO_ETHERNET | |
3996f34b | 94 | IPPROTO_RAW = 255, /* Raw IP packets. */ |
126f53e8 | 95 | #define IPPROTO_RAW IPPROTO_RAW |
f9ac84f9 JM |
96 | IPPROTO_MPTCP = 262, /* Multipath TCP connection. */ |
97 | #define IPPROTO_MPTCP IPPROTO_MPTCP | |
df4ef2ab UD |
98 | IPPROTO_MAX |
99 | }; | |
100 | ||
1c1e7fb6 | 101 | /* If __USE_KERNEL_IPV6_DEFS is 1 then the user has included the kernel |
6c82a2f8 | 102 | network headers first and we should use those ABI-identical definitions |
1c1e7fb6 CD |
103 | instead of our own, otherwise 0. */ |
104 | #if !__USE_KERNEL_IPV6_DEFS | |
6c82a2f8 CD |
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 | |
3bfff2ed | 119 | IPPROTO_MH = 135 /* IPv6 mobility header. */ |
6c82a2f8 CD |
120 | #define IPPROTO_MH IPPROTO_MH |
121 | }; | |
122 | #endif /* !__USE_KERNEL_IPV6_DEFS */ | |
ad483238 UD |
123 | |
124 | /* Type to represent a port. */ | |
125 | typedef uint16_t in_port_t; | |
126 | ||
df4ef2ab | 127 | /* Standard well-known ports. */ |
28f540f4 RM |
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. */ | |
293e360a | 140 | IPPORT_WHOIS = 43, /* Internet Whois service. */ |
28f540f4 RM |
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. */ | |
59dd8641 | 164 | IPPORT_USERRESERVED = 5000 |
28f540f4 RM |
165 | }; |
166 | ||
df4ef2ab UD |
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 | ||
ad483238 | 172 | #define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0) |
df4ef2ab UD |
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 | ||
ad483238 | 178 | #define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000) |
df4ef2ab UD |
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 | ||
ad483238 | 184 | #define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000) |
df4ef2ab UD |
185 | #define IN_CLASSC_NET 0xffffff00 |
186 | #define IN_CLASSC_NSHIFT 8 | |
187 | #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET) | |
188 | ||
ad483238 | 189 | #define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000) |
df4ef2ab UD |
190 | #define IN_MULTICAST(a) IN_CLASSD(a) |
191 | ||
ad483238 UD |
192 | #define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000) |
193 | #define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000) | |
df4ef2ab UD |
194 | |
195 | /* Address to accept any incoming messages. */ | |
ad483238 | 196 | #define INADDR_ANY ((in_addr_t) 0x00000000) |
df4ef2ab | 197 | /* Address to send to all hosts. */ |
ad483238 | 198 | #define INADDR_BROADCAST ((in_addr_t) 0xffffffff) |
df4ef2ab | 199 | /* Address indicating an error return. */ |
ad483238 | 200 | #define INADDR_NONE ((in_addr_t) 0xffffffff) |
fb894896 JM |
201 | /* Dummy address for source of ICMPv6 errors converted to IPv4 (RFC |
202 | 7600). */ | |
203 | #define INADDR_DUMMY ((in_addr_t) 0xc0000008) | |
df4ef2ab UD |
204 | |
205 | /* Network number for local host loopback. */ | |
b0081e6c | 206 | #define IN_LOOPBACKNET 127 |
df4ef2ab UD |
207 | /* Address to loopback in software to local host. */ |
208 | #ifndef INADDR_LOOPBACK | |
ad483238 | 209 | # define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */ |
df4ef2ab UD |
210 | #endif |
211 | ||
ff152e3f | 212 | /* Defines for Multicast INADDR. */ |
ad483238 UD |
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 */ | |
dc91a19e | 216 | #define INADDR_ALLSNOOPERS_GROUP ((in_addr_t) 0xe000006a) /* 224.0.0.106 */ |
ad483238 | 217 | #define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */ |
ff152e3f | 218 | |
1c1e7fb6 | 219 | #if !__USE_KERNEL_IPV6_DEFS |
1fb05e3d UD |
220 | /* IPv6 address */ |
221 | struct in6_addr | |
222 | { | |
223 | union | |
224 | { | |
a53d3f82 | 225 | uint8_t __u6_addr8[16]; |
a53d3f82 UD |
226 | uint16_t __u6_addr16[8]; |
227 | uint32_t __u6_addr32[4]; | |
a53d3f82 UD |
228 | } __in6_u; |
229 | #define s6_addr __in6_u.__u6_addr8 | |
acd7f096 | 230 | #ifdef __USE_MISC |
a53d3f82 UD |
231 | # define s6_addr16 __in6_u.__u6_addr16 |
232 | # define s6_addr32 __in6_u.__u6_addr32 | |
233 | #endif | |
1fb05e3d | 234 | }; |
6c82a2f8 | 235 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
1fb05e3d UD |
236 | |
237 | extern const struct in6_addr in6addr_any; /* :: */ | |
238 | extern const struct in6_addr in6addr_loopback; /* ::1 */ | |
f79973fa UD |
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 } } } | |
1fb05e3d UD |
241 | |
242 | #define INET_ADDRSTRLEN 16 | |
243 | #define INET6_ADDRSTRLEN 46 | |
244 | ||
df4ef2ab UD |
245 | |
246 | /* Structure describing an Internet socket address. */ | |
8d7b6b4c | 247 | struct __attribute_struct_may_alias__ sockaddr_in |
df4ef2ab UD |
248 | { |
249 | __SOCKADDR_COMMON (sin_); | |
ad483238 | 250 | in_port_t sin_port; /* Port number. */ |
df4ef2ab UD |
251 | struct in_addr sin_addr; /* Internet address. */ |
252 | ||
253 | /* Pad to size of `struct sockaddr'. */ | |
a04549c1 JM |
254 | unsigned char sin_zero[sizeof (struct sockaddr) |
255 | - __SOCKADDR_COMMON_SIZE | |
256 | - sizeof (in_port_t) | |
257 | - sizeof (struct in_addr)]; | |
df4ef2ab UD |
258 | }; |
259 | ||
8d7b6b4c FW |
260 | #if __USE_KERNEL_IPV6_DEFS |
261 | struct __attribute_struct_may_alias__ sockaddr_in6; | |
262 | #else | |
1fb05e3d | 263 | /* Ditto, for IPv6. */ |
8d7b6b4c | 264 | struct __attribute_struct_may_alias__ sockaddr_in6 |
1fb05e3d UD |
265 | { |
266 | __SOCKADDR_COMMON (sin6_); | |
ad483238 | 267 | in_port_t sin6_port; /* Transport layer port # */ |
3996f34b | 268 | uint32_t sin6_flowinfo; /* IPv6 flow information */ |
1522c368 | 269 | struct in6_addr sin6_addr; /* IPv6 address */ |
c0bc5f7b | 270 | uint32_t sin6_scope_id; /* IPv6 scope-id */ |
1fb05e3d | 271 | }; |
6c82a2f8 | 272 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
70682735 | 273 | |
acd7f096 | 274 | #ifdef __USE_MISC |
70682735 UD |
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 | ||
a2ee8c65 ST |
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 | ||
70682735 UD |
298 | struct ip_mreq_source |
299 | { | |
300 | /* IP multicast address of group. */ | |
301 | struct in_addr imr_multiaddr; | |
302 | ||
e35ac97c | 303 | /* IP address of interface. */ |
70682735 UD |
304 | struct in_addr imr_interface; |
305 | ||
e35ac97c | 306 | /* IP address of source. */ |
70682735 UD |
307 | struct in_addr imr_sourceaddr; |
308 | }; | |
a53d3f82 UD |
309 | #endif |
310 | ||
1c1e7fb6 | 311 | #if !__USE_KERNEL_IPV6_DEFS |
70682735 | 312 | /* Likewise, for IPv6. */ |
1fb05e3d UD |
313 | struct ipv6_mreq |
314 | { | |
315 | /* IPv6 multicast address of group */ | |
316 | struct in6_addr ipv6mr_multiaddr; | |
317 | ||
3996f34b | 318 | /* local interface */ |
724049ba | 319 | unsigned int ipv6mr_interface; |
1fb05e3d | 320 | }; |
6c82a2f8 | 321 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
70682735 | 322 | |
acd7f096 | 323 | #ifdef __USE_MISC |
b82276d1 UD |
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 | ||
489aa29d UD |
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))) | |
a53d3f82 | 390 | #endif |
489aa29d | 391 | |
ceb2d9aa | 392 | /* Functions to convert between host and network byte order. |
28f540f4 | 393 | |
ceb2d9aa UD |
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 | ||
c1422e5b UD |
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__)); | |
a3e59be8 | 406 | |
28f540f4 RM |
407 | #include <endian.h> |
408 | ||
1522c368 UD |
409 | /* Get machine dependent optimized versions of byte swapping functions. */ |
410 | #include <bits/byteswap.h> | |
6a1cefac | 411 | #include <bits/uintn-identity.h> |
1522c368 | 412 | |
ad483238 UD |
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 | |
28f540f4 RM |
418 | /* The host byte order is the same as network byte order, |
419 | so these functions are all just identity. */ | |
6a1cefac JM |
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) | |
ad483238 UD |
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 | |
60c96635 | 431 | # endif |
28f540f4 RM |
432 | #endif |
433 | ||
aff2453d UD |
434 | #ifdef __GNUC__ |
435 | # define IN6_IS_ADDR_UNSPECIFIED(a) \ | |
436 | (__extension__ \ | |
a784e502 | 437 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
0abbe7cd FW |
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; })) | |
aff2453d UD |
442 | |
443 | # define IN6_IS_ADDR_LOOPBACK(a) \ | |
444 | (__extension__ \ | |
a784e502 | 445 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
0abbe7cd FW |
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); })) | |
aff2453d UD |
450 | |
451 | # define IN6_IS_ADDR_LINKLOCAL(a) \ | |
452 | (__extension__ \ | |
a784e502 | 453 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
0abbe7cd | 454 | (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfe800000); })) |
aff2453d UD |
455 | |
456 | # define IN6_IS_ADDR_SITELOCAL(a) \ | |
457 | (__extension__ \ | |
a784e502 | 458 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
0abbe7cd | 459 | (__a->__in6_u.__u6_addr32[0] & htonl (0xffc00000)) == htonl (0xfec00000); })) |
aff2453d UD |
460 | |
461 | # define IN6_IS_ADDR_V4MAPPED(a) \ | |
462 | (__extension__ \ | |
a784e502 | 463 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
0abbe7cd FW |
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); })) | |
aff2453d UD |
467 | |
468 | # define IN6_IS_ADDR_V4COMPAT(a) \ | |
469 | (__extension__ \ | |
a784e502 | 470 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
0abbe7cd FW |
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; })) | |
aff2453d UD |
475 | |
476 | # define IN6_ARE_ADDR_EQUAL(a,b) \ | |
477 | (__extension__ \ | |
a784e502 UD |
478 | ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ |
479 | const struct in6_addr *__b = (const struct in6_addr *) (b); \ | |
0abbe7cd FW |
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]; })) | |
aff2453d UD |
484 | #else |
485 | # define IN6_IS_ADDR_UNSPECIFIED(a) \ | |
a784e502 UD |
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) | |
1fb05e3d | 490 | |
aff2453d | 491 | # define IN6_IS_ADDR_LOOPBACK(a) \ |
a784e502 UD |
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)) | |
1fb05e3d | 496 | |
aff2453d | 497 | # define IN6_IS_ADDR_LINKLOCAL(a) \ |
a784e502 | 498 | ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \ |
c3301189 | 499 | == htonl (0xfe800000)) |
1fb05e3d | 500 | |
aff2453d | 501 | # define IN6_IS_ADDR_SITELOCAL(a) \ |
a784e502 | 502 | ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \ |
c3301189 | 503 | == htonl (0xfec00000)) |
1fb05e3d | 504 | |
aff2453d | 505 | # define IN6_IS_ADDR_V4MAPPED(a) \ |
a784e502 UD |
506 | ((((const uint32_t *) (a))[0] == 0) \ |
507 | && (((const uint32_t *) (a))[1] == 0) \ | |
508 | && (((const uint32_t *) (a))[2] == htonl (0xffff))) | |
1fb05e3d | 509 | |
aff2453d | 510 | # define IN6_IS_ADDR_V4COMPAT(a) \ |
a784e502 UD |
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)) | |
3996f34b | 515 | |
aff2453d | 516 | # define IN6_ARE_ADDR_EQUAL(a,b) \ |
a784e502 UD |
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])) | |
aff2453d UD |
521 | #endif |
522 | ||
a784e502 | 523 | #define IN6_IS_ADDR_MULTICAST(a) (((const uint8_t *) (a))[0] == 0xff) |
8f2ece69 | 524 | |
acd7f096 | 525 | #ifdef __USE_MISC |
bfbc5754 | 526 | /* Bind socket to a privileged IP port. */ |
c1422e5b | 527 | extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW; |
1fb05e3d | 528 | |
c1301d9a UD |
529 | /* The IPv6 version of this function. */ |
530 | extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in) | |
531 | __THROW; | |
a53d3f82 | 532 | #endif |
1f205a47 | 533 | |
8619129f UD |
534 | |
535 | #define IN6_IS_ADDR_MC_NODELOCAL(a) \ | |
c3301189 | 536 | (IN6_IS_ADDR_MULTICAST(a) \ |
a784e502 | 537 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x1)) |
8619129f UD |
538 | |
539 | #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ | |
c3301189 | 540 | (IN6_IS_ADDR_MULTICAST(a) \ |
a784e502 | 541 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x2)) |
8619129f UD |
542 | |
543 | #define IN6_IS_ADDR_MC_SITELOCAL(a) \ | |
c3301189 | 544 | (IN6_IS_ADDR_MULTICAST(a) \ |
a784e502 | 545 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x5)) |
8619129f UD |
546 | |
547 | #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ | |
c3301189 | 548 | (IN6_IS_ADDR_MULTICAST(a) \ |
a784e502 | 549 | && ((((const uint8_t *) (a))[1] & 0xf) == 0x8)) |
8619129f UD |
550 | |
551 | #define IN6_IS_ADDR_MC_GLOBAL(a) \ | |
c3301189 | 552 | (IN6_IS_ADDR_MULTICAST(a) \ |
a784e502 | 553 | && ((((const uint8_t *) (a))[1] & 0xf) == 0xe)) |
8619129f | 554 | |
a53d3f82 UD |
555 | |
556 | #ifdef __USE_GNU | |
bea9b193 RM |
557 | struct cmsghdr; /* Forward declaration. */ |
558 | ||
1c1e7fb6 | 559 | #if !__USE_KERNEL_IPV6_DEFS |
1f205a47 | 560 | /* IPv6 packet information. */ |
0501d603 | 561 | struct in6_pktinfo |
1f205a47 | 562 | { |
07bfff20 UD |
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 */ | |
1f205a47 | 572 | }; |
cb43bb0d | 573 | #endif /* !__USE_KERNEL_IPV6_DEFS */ |
a4596570 | 574 | |
07bfff20 UD |
575 | /* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */ |
576 | extern int inet6_option_space (int __nbytes) | |
577 | __THROW __attribute_deprecated__; | |
a4596570 | 578 | extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp, |
07bfff20 | 579 | int __type) __THROW __attribute_deprecated__; |
a4596570 | 580 | extern int inet6_option_append (struct cmsghdr *__cmsg, |
a784e502 | 581 | const uint8_t *__typep, int __multx, |
07bfff20 | 582 | int __plusy) __THROW __attribute_deprecated__; |
a4596570 | 583 | extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen, |
07bfff20 UD |
584 | int __multx, int __plusy) |
585 | __THROW __attribute_deprecated__; | |
a784e502 | 586 | extern int inet6_option_next (const struct cmsghdr *__cmsg, |
07bfff20 UD |
587 | uint8_t **__tptrp) |
588 | __THROW __attribute_deprecated__; | |
a784e502 | 589 | extern int inet6_option_find (const struct cmsghdr *__cmsg, |
07bfff20 UD |
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; | |
a784e502 UD |
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) | |
07bfff20 | 621 | __THROW; |
f89d6892 UD |
622 | |
623 | ||
624 | /* Multicast source filter support. */ | |
625 | ||
626 | /* Get IPv4 source filter. */ | |
a3437831 | 627 | extern int getipv4sourcefilter (int __s, struct in_addr __interface_addr, |
f89d6892 UD |
628 | struct in_addr __group, uint32_t *__fmode, |
629 | uint32_t *__numsrc, struct in_addr *__slist) | |
630 | __THROW; | |
631 | ||
632 | /* Set IPv4 source filter. */ | |
a3437831 | 633 | extern int setipv4sourcefilter (int __s, struct in_addr __interface_addr, |
f89d6892 | 634 | struct in_addr __group, uint32_t __fmode, |
d3c99ad1 | 635 | uint32_t __numsrc, |
a784e502 | 636 | const struct in_addr *__slist) |
f89d6892 UD |
637 | __THROW; |
638 | ||
639 | ||
640 | /* Get source filter. */ | |
a3437831 | 641 | extern int getsourcefilter (int __s, uint32_t __interface_addr, |
a784e502 | 642 | const struct sockaddr *__group, |
d3c99ad1 UD |
643 | socklen_t __grouplen, uint32_t *__fmode, |
644 | uint32_t *__numsrc, | |
f89d6892 UD |
645 | struct sockaddr_storage *__slist) __THROW; |
646 | ||
647 | /* Set source filter. */ | |
a3437831 | 648 | extern int setsourcefilter (int __s, uint32_t __interface_addr, |
a784e502 | 649 | const struct sockaddr *__group, |
d3c99ad1 UD |
650 | socklen_t __grouplen, uint32_t __fmode, |
651 | uint32_t __numsrc, | |
a784e502 | 652 | const struct sockaddr_storage *__slist) __THROW; |
a4596570 UD |
653 | #endif /* use GNU */ |
654 | ||
1fb05e3d UD |
655 | __END_DECLS |
656 | ||
28f540f4 | 657 | #endif /* netinet/in.h */ |