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1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
2 | /* | |
3 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
4 | * operating system. INET is implemented using the BSD Socket | |
5 | * interface as the means of communication with the user level. | |
6 | * | |
7 | * Definitions of the Internet Protocol. | |
8 | * | |
9 | * Version: @(#)in.h 1.0.1 04/21/93 | |
10 | * | |
11 | * Authors: Original taken from the GNU Project <netinet/in.h> file. | |
12 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or | |
15 | * modify it under the terms of the GNU General Public License | |
16 | * as published by the Free Software Foundation; either version | |
17 | * 2 of the License, or (at your option) any later version. | |
18 | */ | |
19 | #ifndef _UAPI_LINUX_IN_H | |
20 | #define _UAPI_LINUX_IN_H | |
21 | ||
22 | #include <linux/types.h> | |
a95ff98e | 23 | #include <linux/stddef.h> |
7057b614 YW |
24 | #include <linux/libc-compat.h> |
25 | #include <linux/socket.h> | |
26 | ||
27 | #if __UAPI_DEF_IN_IPPROTO | |
28 | /* Standard well-defined IP protocols. */ | |
29 | enum { | |
30 | IPPROTO_IP = 0, /* Dummy protocol for TCP */ | |
31 | #define IPPROTO_IP IPPROTO_IP | |
32 | IPPROTO_ICMP = 1, /* Internet Control Message Protocol */ | |
33 | #define IPPROTO_ICMP IPPROTO_ICMP | |
34 | IPPROTO_IGMP = 2, /* Internet Group Management Protocol */ | |
35 | #define IPPROTO_IGMP IPPROTO_IGMP | |
36 | IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */ | |
37 | #define IPPROTO_IPIP IPPROTO_IPIP | |
38 | IPPROTO_TCP = 6, /* Transmission Control Protocol */ | |
39 | #define IPPROTO_TCP IPPROTO_TCP | |
40 | IPPROTO_EGP = 8, /* Exterior Gateway Protocol */ | |
41 | #define IPPROTO_EGP IPPROTO_EGP | |
42 | IPPROTO_PUP = 12, /* PUP protocol */ | |
43 | #define IPPROTO_PUP IPPROTO_PUP | |
44 | IPPROTO_UDP = 17, /* User Datagram Protocol */ | |
45 | #define IPPROTO_UDP IPPROTO_UDP | |
46 | IPPROTO_IDP = 22, /* XNS IDP protocol */ | |
47 | #define IPPROTO_IDP IPPROTO_IDP | |
48 | IPPROTO_TP = 29, /* SO Transport Protocol Class 4 */ | |
49 | #define IPPROTO_TP IPPROTO_TP | |
50 | IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol */ | |
51 | #define IPPROTO_DCCP IPPROTO_DCCP | |
52 | IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */ | |
53 | #define IPPROTO_IPV6 IPPROTO_IPV6 | |
54 | IPPROTO_RSVP = 46, /* RSVP Protocol */ | |
55 | #define IPPROTO_RSVP IPPROTO_RSVP | |
56 | IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */ | |
57 | #define IPPROTO_GRE IPPROTO_GRE | |
58 | IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */ | |
59 | #define IPPROTO_ESP IPPROTO_ESP | |
60 | IPPROTO_AH = 51, /* Authentication Header protocol */ | |
61 | #define IPPROTO_AH IPPROTO_AH | |
62 | IPPROTO_MTP = 92, /* Multicast Transport Protocol */ | |
63 | #define IPPROTO_MTP IPPROTO_MTP | |
64 | IPPROTO_BEETPH = 94, /* IP option pseudo header for BEET */ | |
65 | #define IPPROTO_BEETPH IPPROTO_BEETPH | |
66 | IPPROTO_ENCAP = 98, /* Encapsulation Header */ | |
67 | #define IPPROTO_ENCAP IPPROTO_ENCAP | |
68 | IPPROTO_PIM = 103, /* Protocol Independent Multicast */ | |
69 | #define IPPROTO_PIM IPPROTO_PIM | |
70 | IPPROTO_COMP = 108, /* Compression Header Protocol */ | |
71 | #define IPPROTO_COMP IPPROTO_COMP | |
a95ff98e FS |
72 | IPPROTO_L2TP = 115, /* Layer 2 Tunnelling Protocol */ |
73 | #define IPPROTO_L2TP IPPROTO_L2TP | |
7057b614 YW |
74 | IPPROTO_SCTP = 132, /* Stream Control Transport Protocol */ |
75 | #define IPPROTO_SCTP IPPROTO_SCTP | |
76 | IPPROTO_UDPLITE = 136, /* UDP-Lite (RFC 3828) */ | |
77 | #define IPPROTO_UDPLITE IPPROTO_UDPLITE | |
78 | IPPROTO_MPLS = 137, /* MPLS in IP (RFC 4023) */ | |
79 | #define IPPROTO_MPLS IPPROTO_MPLS | |
ed2c2d36 YW |
80 | IPPROTO_ETHERNET = 143, /* Ethernet-within-IPv6 Encapsulation */ |
81 | #define IPPROTO_ETHERNET IPPROTO_ETHERNET | |
7057b614 YW |
82 | IPPROTO_RAW = 255, /* Raw IP packets */ |
83 | #define IPPROTO_RAW IPPROTO_RAW | |
1f58feec YW |
84 | IPPROTO_MPTCP = 262, /* Multipath TCP connection */ |
85 | #define IPPROTO_MPTCP IPPROTO_MPTCP | |
7057b614 YW |
86 | IPPROTO_MAX |
87 | }; | |
88 | #endif | |
89 | ||
90 | #if __UAPI_DEF_IN_ADDR | |
91 | /* Internet address. */ | |
92 | struct in_addr { | |
93 | __be32 s_addr; | |
94 | }; | |
95 | #endif | |
96 | ||
97 | #define IP_TOS 1 | |
98 | #define IP_TTL 2 | |
99 | #define IP_HDRINCL 3 | |
100 | #define IP_OPTIONS 4 | |
101 | #define IP_ROUTER_ALERT 5 | |
102 | #define IP_RECVOPTS 6 | |
103 | #define IP_RETOPTS 7 | |
104 | #define IP_PKTINFO 8 | |
105 | #define IP_PKTOPTIONS 9 | |
106 | #define IP_MTU_DISCOVER 10 | |
107 | #define IP_RECVERR 11 | |
108 | #define IP_RECVTTL 12 | |
109 | #define IP_RECVTOS 13 | |
110 | #define IP_MTU 14 | |
111 | #define IP_FREEBIND 15 | |
112 | #define IP_IPSEC_POLICY 16 | |
113 | #define IP_XFRM_POLICY 17 | |
114 | #define IP_PASSSEC 18 | |
115 | #define IP_TRANSPARENT 19 | |
116 | ||
117 | /* BSD compatibility */ | |
118 | #define IP_RECVRETOPTS IP_RETOPTS | |
119 | ||
120 | /* TProxy original addresses */ | |
121 | #define IP_ORIGDSTADDR 20 | |
122 | #define IP_RECVORIGDSTADDR IP_ORIGDSTADDR | |
123 | ||
124 | #define IP_MINTTL 21 | |
125 | #define IP_NODEFRAG 22 | |
126 | #define IP_CHECKSUM 23 | |
127 | #define IP_BIND_ADDRESS_NO_PORT 24 | |
128 | #define IP_RECVFRAGSIZE 25 | |
ed2c2d36 | 129 | #define IP_RECVERR_RFC4884 26 |
7057b614 YW |
130 | |
131 | /* IP_MTU_DISCOVER values */ | |
132 | #define IP_PMTUDISC_DONT 0 /* Never send DF frames */ | |
133 | #define IP_PMTUDISC_WANT 1 /* Use per route hints */ | |
134 | #define IP_PMTUDISC_DO 2 /* Always DF */ | |
135 | #define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu */ | |
136 | /* Always use interface mtu (ignores dst pmtu) but don't set DF flag. | |
137 | * Also incoming ICMP frag_needed notifications will be ignored on | |
138 | * this socket to prevent accepting spoofed ones. | |
139 | */ | |
140 | #define IP_PMTUDISC_INTERFACE 4 | |
ed2c2d36 | 141 | /* weaker version of IP_PMTUDISC_INTERFACE, which allows packets to get |
7057b614 YW |
142 | * fragmented if they exeed the interface mtu |
143 | */ | |
144 | #define IP_PMTUDISC_OMIT 5 | |
145 | ||
146 | #define IP_MULTICAST_IF 32 | |
147 | #define IP_MULTICAST_TTL 33 | |
148 | #define IP_MULTICAST_LOOP 34 | |
149 | #define IP_ADD_MEMBERSHIP 35 | |
150 | #define IP_DROP_MEMBERSHIP 36 | |
151 | #define IP_UNBLOCK_SOURCE 37 | |
152 | #define IP_BLOCK_SOURCE 38 | |
153 | #define IP_ADD_SOURCE_MEMBERSHIP 39 | |
154 | #define IP_DROP_SOURCE_MEMBERSHIP 40 | |
155 | #define IP_MSFILTER 41 | |
156 | #define MCAST_JOIN_GROUP 42 | |
157 | #define MCAST_BLOCK_SOURCE 43 | |
158 | #define MCAST_UNBLOCK_SOURCE 44 | |
159 | #define MCAST_LEAVE_GROUP 45 | |
160 | #define MCAST_JOIN_SOURCE_GROUP 46 | |
161 | #define MCAST_LEAVE_SOURCE_GROUP 47 | |
162 | #define MCAST_MSFILTER 48 | |
163 | #define IP_MULTICAST_ALL 49 | |
164 | #define IP_UNICAST_IF 50 | |
c6939752 YW |
165 | #define IP_LOCAL_PORT_RANGE 51 |
166 | #define IP_PROTOCOL 52 | |
7057b614 YW |
167 | |
168 | #define MCAST_EXCLUDE 0 | |
169 | #define MCAST_INCLUDE 1 | |
170 | ||
171 | /* These need to appear somewhere around here */ | |
172 | #define IP_DEFAULT_MULTICAST_TTL 1 | |
173 | #define IP_DEFAULT_MULTICAST_LOOP 1 | |
174 | ||
175 | /* Request struct for multicast socket ops */ | |
176 | ||
177 | #if __UAPI_DEF_IP_MREQ | |
178 | struct ip_mreq { | |
179 | struct in_addr imr_multiaddr; /* IP multicast address of group */ | |
180 | struct in_addr imr_interface; /* local IP address of interface */ | |
181 | }; | |
182 | ||
183 | struct ip_mreqn { | |
184 | struct in_addr imr_multiaddr; /* IP multicast address of group */ | |
185 | struct in_addr imr_address; /* local IP address of interface */ | |
186 | int imr_ifindex; /* Interface index */ | |
187 | }; | |
188 | ||
189 | struct ip_mreq_source { | |
190 | __be32 imr_multiaddr; | |
191 | __be32 imr_interface; | |
192 | __be32 imr_sourceaddr; | |
193 | }; | |
194 | ||
195 | struct ip_msfilter { | |
a95ff98e FS |
196 | __be32 imsf_multiaddr; |
197 | __be32 imsf_interface; | |
198 | __u32 imsf_fmode; | |
199 | __u32 imsf_numsrc; | |
d25cc832 | 200 | union { |
a95ff98e FS |
201 | __be32 imsf_slist[1]; |
202 | __DECLARE_FLEX_ARRAY(__be32, imsf_slist_flex); | |
d25cc832 | 203 | }; |
7057b614 YW |
204 | }; |
205 | ||
206 | #define IP_MSFILTER_SIZE(numsrc) \ | |
207 | (sizeof(struct ip_msfilter) - sizeof(__u32) \ | |
208 | + (numsrc) * sizeof(__u32)) | |
209 | ||
210 | struct group_req { | |
211 | __u32 gr_interface; /* interface index */ | |
212 | struct __kernel_sockaddr_storage gr_group; /* group address */ | |
213 | }; | |
214 | ||
215 | struct group_source_req { | |
216 | __u32 gsr_interface; /* interface index */ | |
217 | struct __kernel_sockaddr_storage gsr_group; /* group address */ | |
218 | struct __kernel_sockaddr_storage gsr_source; /* source address */ | |
219 | }; | |
220 | ||
221 | struct group_filter { | |
d25cc832 YW |
222 | union { |
223 | struct { | |
224 | __u32 gf_interface_aux; /* interface index */ | |
225 | struct __kernel_sockaddr_storage gf_group_aux; /* multicast address */ | |
226 | __u32 gf_fmode_aux; /* filter mode */ | |
227 | __u32 gf_numsrc_aux; /* number of sources */ | |
228 | struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */ | |
229 | }; | |
230 | struct { | |
231 | __u32 gf_interface; /* interface index */ | |
232 | struct __kernel_sockaddr_storage gf_group; /* multicast address */ | |
233 | __u32 gf_fmode; /* filter mode */ | |
234 | __u32 gf_numsrc; /* number of sources */ | |
235 | struct __kernel_sockaddr_storage gf_slist_flex[]; /* interface index */ | |
236 | }; | |
237 | }; | |
7057b614 YW |
238 | }; |
239 | ||
240 | #define GROUP_FILTER_SIZE(numsrc) \ | |
241 | (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \ | |
242 | + (numsrc) * sizeof(struct __kernel_sockaddr_storage)) | |
243 | #endif | |
244 | ||
245 | #if __UAPI_DEF_IN_PKTINFO | |
246 | struct in_pktinfo { | |
247 | int ipi_ifindex; | |
248 | struct in_addr ipi_spec_dst; | |
249 | struct in_addr ipi_addr; | |
250 | }; | |
251 | #endif | |
252 | ||
253 | /* Structure describing an Internet (IP) socket address. */ | |
254 | #if __UAPI_DEF_SOCKADDR_IN | |
255 | #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ | |
256 | struct sockaddr_in { | |
257 | __kernel_sa_family_t sin_family; /* Address family */ | |
258 | __be16 sin_port; /* Port number */ | |
259 | struct in_addr sin_addr; /* Internet address */ | |
260 | ||
261 | /* Pad to size of `struct sockaddr'. */ | |
262 | unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) - | |
263 | sizeof(unsigned short int) - sizeof(struct in_addr)]; | |
264 | }; | |
265 | #define sin_zero __pad /* for BSD UNIX comp. -FvK */ | |
266 | #endif | |
267 | ||
268 | #if __UAPI_DEF_IN_CLASS | |
269 | /* | |
270 | * Definitions of the bits in an Internet address integer. | |
271 | * On subnets, host and network parts are found according | |
272 | * to the subnet mask, not these masks. | |
273 | */ | |
274 | #define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0) | |
275 | #define IN_CLASSA_NET 0xff000000 | |
276 | #define IN_CLASSA_NSHIFT 24 | |
277 | #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET) | |
278 | #define IN_CLASSA_MAX 128 | |
279 | ||
280 | #define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000) | |
281 | #define IN_CLASSB_NET 0xffff0000 | |
282 | #define IN_CLASSB_NSHIFT 16 | |
283 | #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET) | |
284 | #define IN_CLASSB_MAX 65536 | |
285 | ||
286 | #define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000) | |
287 | #define IN_CLASSC_NET 0xffffff00 | |
288 | #define IN_CLASSC_NSHIFT 8 | |
289 | #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET) | |
290 | ||
291 | #define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000) | |
292 | #define IN_MULTICAST(a) IN_CLASSD(a) | |
293 | #define IN_MULTICAST_NET 0xe0000000 | |
294 | ||
295 | #define IN_BADCLASS(a) (((long int) (a) ) == (long int)0xffffffff) | |
296 | #define IN_EXPERIMENTAL(a) IN_BADCLASS((a)) | |
297 | ||
298 | #define IN_CLASSE(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000) | |
299 | #define IN_CLASSE_NET 0xffffffff | |
300 | #define IN_CLASSE_NSHIFT 0 | |
301 | ||
302 | /* Address to accept any incoming messages. */ | |
303 | #define INADDR_ANY ((unsigned long int) 0x00000000) | |
304 | ||
305 | /* Address to send to all hosts. */ | |
306 | #define INADDR_BROADCAST ((unsigned long int) 0xffffffff) | |
307 | ||
308 | /* Address indicating an error return. */ | |
309 | #define INADDR_NONE ((unsigned long int) 0xffffffff) | |
310 | ||
4931217a YW |
311 | /* Dummy address for src of ICMP replies if no real address is set (RFC7600). */ |
312 | #define INADDR_DUMMY ((unsigned long int) 0xc0000008) | |
313 | ||
7057b614 YW |
314 | /* Network number for local host loopback. */ |
315 | #define IN_LOOPBACKNET 127 | |
316 | ||
317 | /* Address to loopback in software to local host. */ | |
318 | #define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */ | |
319 | #define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000) | |
320 | ||
321 | /* Defines for Multicast INADDR */ | |
a3824444 YW |
322 | #define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */ |
323 | #define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */ | |
324 | #define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */ | |
325 | #define INADDR_ALLSNOOPERS_GROUP 0xe000006aU /* 224.0.0.106 */ | |
326 | #define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */ | |
7057b614 YW |
327 | #endif |
328 | ||
329 | /* <asm/byteorder.h> contains the htonl type stuff.. */ | |
330 | #include <asm/byteorder.h> | |
331 | ||
332 | ||
333 | #endif /* _UAPI_LINUX_IN_H */ |