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> |
23 | #include <linux/stddef.h> |
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 |
72 | IPPROTO_L2TP = 115, /* Layer 2 Tunnelling Protocol */ |
73 | #define IPPROTO_L2TP IPPROTO_L2TP |
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 |
80 | IPPROTO_ETHERNET = 143, /* Ethernet-within-IPv6 Encapsulation */ |
81 | #define IPPROTO_ETHERNET IPPROTO_ETHERNET |
82 | IPPROTO_RAW = 255, /* Raw IP packets */ |
83 | #define IPPROTO_RAW IPPROTO_RAW |
84 | IPPROTO_MPTCP = 262, /* Multipath TCP connection */ |
85 | #define IPPROTO_MPTCP IPPROTO_MPTCP |
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 |
129 | #define IP_RECVERR_RFC4884 26 |
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 |
141 | /* weaker version of IP_PMTUDISC_INTERFACE, which allows packets to get |
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 |
165 | #define IP_LOCAL_PORT_RANGE 51 |
166 | #define IP_PROTOCOL 52 |
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 { |
196 | __be32 imsf_multiaddr; |
197 | __be32 imsf_interface; |
198 | __u32 imsf_fmode; |
199 | __u32 imsf_numsrc; |
200 | union { |
201 | __be32 imsf_slist[1]; |
202 | __DECLARE_FLEX_ARRAY(__be32, imsf_slist_flex); |
203 | }; |
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 { |
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 | }; |
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 | |
311 | /* Dummy address for src of ICMP replies if no real address is set (RFC7600). */ |
312 | #define INADDR_DUMMY ((unsigned long int) 0xc0000008) |
313 | |
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 */ |
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 */ |
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 */ |
334 | |