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David Howells607ca462012-10-13 10:46:48 +01001/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Definitions of the Internet Protocol.
7 *
8 * Version: @(#)in.h 1.0.1 04/21/93
9 *
10 * Authors: Original taken from the GNU Project <netinet/in.h> file.
11 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version
16 * 2 of the License, or (at your option) any later version.
17 */
18#ifndef _UAPI_LINUX_IN_H
19#define _UAPI_LINUX_IN_H
20
21#include <linux/types.h>
Stephen Hemminger279c6c72015-06-29 14:57:48 -100022#include <linux/libc-compat.h>
David Howells607ca462012-10-13 10:46:48 +010023#include <linux/socket.h>
24
Stephen Hemminger279c6c72015-06-29 14:57:48 -100025#if __UAPI_DEF_IN_IPPROTO
David Howells607ca462012-10-13 10:46:48 +010026/* Standard well-defined IP protocols. */
27enum {
28 IPPROTO_IP = 0, /* Dummy protocol for TCP */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080029#define IPPROTO_IP IPPROTO_IP
David Howells607ca462012-10-13 10:46:48 +010030 IPPROTO_ICMP = 1, /* Internet Control Message Protocol */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080031#define IPPROTO_ICMP IPPROTO_ICMP
David Howells607ca462012-10-13 10:46:48 +010032 IPPROTO_IGMP = 2, /* Internet Group Management Protocol */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080033#define IPPROTO_IGMP IPPROTO_IGMP
David Howells607ca462012-10-13 10:46:48 +010034 IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080035#define IPPROTO_IPIP IPPROTO_IPIP
David Howells607ca462012-10-13 10:46:48 +010036 IPPROTO_TCP = 6, /* Transmission Control Protocol */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080037#define IPPROTO_TCP IPPROTO_TCP
David Howells607ca462012-10-13 10:46:48 +010038 IPPROTO_EGP = 8, /* Exterior Gateway Protocol */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080039#define IPPROTO_EGP IPPROTO_EGP
David Howells607ca462012-10-13 10:46:48 +010040 IPPROTO_PUP = 12, /* PUP protocol */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080041#define IPPROTO_PUP IPPROTO_PUP
David Howells607ca462012-10-13 10:46:48 +010042 IPPROTO_UDP = 17, /* User Datagram Protocol */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080043#define IPPROTO_UDP IPPROTO_UDP
David Howells607ca462012-10-13 10:46:48 +010044 IPPROTO_IDP = 22, /* XNS IDP protocol */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080045#define IPPROTO_IDP IPPROTO_IDP
46 IPPROTO_TP = 29, /* SO Transport Protocol Class 4 */
47#define IPPROTO_TP IPPROTO_TP
David Howells607ca462012-10-13 10:46:48 +010048 IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080049#define IPPROTO_DCCP IPPROTO_DCCP
50 IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */
51#define IPPROTO_IPV6 IPPROTO_IPV6
52 IPPROTO_RSVP = 46, /* RSVP Protocol */
53#define IPPROTO_RSVP IPPROTO_RSVP
David Howells607ca462012-10-13 10:46:48 +010054 IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080055#define IPPROTO_GRE IPPROTO_GRE
56 IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */
57#define IPPROTO_ESP IPPROTO_ESP
58 IPPROTO_AH = 51, /* Authentication Header protocol */
59#define IPPROTO_AH IPPROTO_AH
60 IPPROTO_MTP = 92, /* Multicast Transport Protocol */
61#define IPPROTO_MTP IPPROTO_MTP
62 IPPROTO_BEETPH = 94, /* IP option pseudo header for BEET */
63#define IPPROTO_BEETPH IPPROTO_BEETPH
64 IPPROTO_ENCAP = 98, /* Encapsulation Header */
65#define IPPROTO_ENCAP IPPROTO_ENCAP
66 IPPROTO_PIM = 103, /* Protocol Independent Multicast */
67#define IPPROTO_PIM IPPROTO_PIM
68 IPPROTO_COMP = 108, /* Compression Header Protocol */
69#define IPPROTO_COMP IPPROTO_COMP
70 IPPROTO_SCTP = 132, /* Stream Control Transport Protocol */
71#define IPPROTO_SCTP IPPROTO_SCTP
David Howells607ca462012-10-13 10:46:48 +010072 IPPROTO_UDPLITE = 136, /* UDP-Lite (RFC 3828) */
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080073#define IPPROTO_UDPLITE IPPROTO_UDPLITE
Tom Herbert730fc432015-06-04 09:16:37 -070074 IPPROTO_MPLS = 137, /* MPLS in IP (RFC 4023) */
75#define IPPROTO_MPLS IPPROTO_MPLS
Carlos O'Donellcfd280c2013-08-15 17:28:10 +080076 IPPROTO_RAW = 255, /* Raw IP packets */
77#define IPPROTO_RAW IPPROTO_RAW
David Howells607ca462012-10-13 10:46:48 +010078 IPPROTO_MAX
79};
Stephen Hemminger279c6c72015-06-29 14:57:48 -100080#endif
David Howells607ca462012-10-13 10:46:48 +010081
Stephen Hemminger279c6c72015-06-29 14:57:48 -100082#if __UAPI_DEF_IN_ADDR
David Howells607ca462012-10-13 10:46:48 +010083/* Internet address. */
84struct in_addr {
85 __be32 s_addr;
86};
Stephen Hemminger279c6c72015-06-29 14:57:48 -100087#endif
David Howells607ca462012-10-13 10:46:48 +010088
89#define IP_TOS 1
90#define IP_TTL 2
91#define IP_HDRINCL 3
92#define IP_OPTIONS 4
93#define IP_ROUTER_ALERT 5
94#define IP_RECVOPTS 6
95#define IP_RETOPTS 7
96#define IP_PKTINFO 8
97#define IP_PKTOPTIONS 9
98#define IP_MTU_DISCOVER 10
99#define IP_RECVERR 11
100#define IP_RECVTTL 12
101#define IP_RECVTOS 13
102#define IP_MTU 14
103#define IP_FREEBIND 15
104#define IP_IPSEC_POLICY 16
105#define IP_XFRM_POLICY 17
106#define IP_PASSSEC 18
107#define IP_TRANSPARENT 19
108
109/* BSD compatibility */
110#define IP_RECVRETOPTS IP_RETOPTS
111
112/* TProxy original addresses */
113#define IP_ORIGDSTADDR 20
114#define IP_RECVORIGDSTADDR IP_ORIGDSTADDR
115
116#define IP_MINTTL 21
117#define IP_NODEFRAG 22
Tom Herbertad6f9392015-01-05 13:56:17 -0800118#define IP_CHECKSUM 23
Eric Dumazet90c337d2015-06-06 21:17:57 -0700119#define IP_BIND_ADDRESS_NO_PORT 24
David Howells607ca462012-10-13 10:46:48 +0100120
121/* IP_MTU_DISCOVER values */
122#define IP_PMTUDISC_DONT 0 /* Never send DF frames */
123#define IP_PMTUDISC_WANT 1 /* Use per route hints */
124#define IP_PMTUDISC_DO 2 /* Always DF */
125#define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu */
Hannes Frederic Sowa482fc602013-11-05 02:24:17 +0100126/* Always use interface mtu (ignores dst pmtu) but don't set DF flag.
127 * Also incoming ICMP frag_needed notifications will be ignored on
128 * this socket to prevent accepting spoofed ones.
129 */
130#define IP_PMTUDISC_INTERFACE 4
Hannes Frederic Sowa1b346572014-02-26 01:20:42 +0100131/* weaker version of IP_PMTUDISC_INTERFACE, which allos packets to get
132 * fragmented if they exeed the interface mtu
133 */
134#define IP_PMTUDISC_OMIT 5
David Howells607ca462012-10-13 10:46:48 +0100135
136#define IP_MULTICAST_IF 32
137#define IP_MULTICAST_TTL 33
138#define IP_MULTICAST_LOOP 34
139#define IP_ADD_MEMBERSHIP 35
140#define IP_DROP_MEMBERSHIP 36
141#define IP_UNBLOCK_SOURCE 37
142#define IP_BLOCK_SOURCE 38
143#define IP_ADD_SOURCE_MEMBERSHIP 39
144#define IP_DROP_SOURCE_MEMBERSHIP 40
145#define IP_MSFILTER 41
146#define MCAST_JOIN_GROUP 42
147#define MCAST_BLOCK_SOURCE 43
148#define MCAST_UNBLOCK_SOURCE 44
149#define MCAST_LEAVE_GROUP 45
150#define MCAST_JOIN_SOURCE_GROUP 46
151#define MCAST_LEAVE_SOURCE_GROUP 47
152#define MCAST_MSFILTER 48
153#define IP_MULTICAST_ALL 49
154#define IP_UNICAST_IF 50
155
156#define MCAST_EXCLUDE 0
157#define MCAST_INCLUDE 1
158
159/* These need to appear somewhere around here */
160#define IP_DEFAULT_MULTICAST_TTL 1
161#define IP_DEFAULT_MULTICAST_LOOP 1
162
163/* Request struct for multicast socket ops */
164
Stephen Hemminger279c6c72015-06-29 14:57:48 -1000165#if __UAPI_DEF_IP_MREQ
David Howells607ca462012-10-13 10:46:48 +0100166struct ip_mreq {
167 struct in_addr imr_multiaddr; /* IP multicast address of group */
168 struct in_addr imr_interface; /* local IP address of interface */
169};
170
171struct ip_mreqn {
172 struct in_addr imr_multiaddr; /* IP multicast address of group */
173 struct in_addr imr_address; /* local IP address of interface */
174 int imr_ifindex; /* Interface index */
175};
176
177struct ip_mreq_source {
178 __be32 imr_multiaddr;
179 __be32 imr_interface;
180 __be32 imr_sourceaddr;
181};
182
183struct ip_msfilter {
184 __be32 imsf_multiaddr;
185 __be32 imsf_interface;
186 __u32 imsf_fmode;
187 __u32 imsf_numsrc;
188 __be32 imsf_slist[1];
189};
190
191#define IP_MSFILTER_SIZE(numsrc) \
192 (sizeof(struct ip_msfilter) - sizeof(__u32) \
193 + (numsrc) * sizeof(__u32))
194
195struct group_req {
196 __u32 gr_interface; /* interface index */
197 struct __kernel_sockaddr_storage gr_group; /* group address */
198};
199
200struct group_source_req {
201 __u32 gsr_interface; /* interface index */
202 struct __kernel_sockaddr_storage gsr_group; /* group address */
203 struct __kernel_sockaddr_storage gsr_source; /* source address */
204};
205
206struct group_filter {
207 __u32 gf_interface; /* interface index */
208 struct __kernel_sockaddr_storage gf_group; /* multicast address */
209 __u32 gf_fmode; /* filter mode */
210 __u32 gf_numsrc; /* number of sources */
211 struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */
212};
213
214#define GROUP_FILTER_SIZE(numsrc) \
215 (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \
216 + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
Stephen Hemminger279c6c72015-06-29 14:57:48 -1000217#endif
David Howells607ca462012-10-13 10:46:48 +0100218
Stephen Hemminger279c6c72015-06-29 14:57:48 -1000219#if __UAPI_DEF_IN_PKTINFO
David Howells607ca462012-10-13 10:46:48 +0100220struct in_pktinfo {
221 int ipi_ifindex;
222 struct in_addr ipi_spec_dst;
223 struct in_addr ipi_addr;
224};
Stephen Hemminger279c6c72015-06-29 14:57:48 -1000225#endif
David Howells607ca462012-10-13 10:46:48 +0100226
227/* Structure describing an Internet (IP) socket address. */
Stephen Hemminger279c6c72015-06-29 14:57:48 -1000228#if __UAPI_DEF_SOCKADDR_IN
David Howells607ca462012-10-13 10:46:48 +0100229#define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
230struct sockaddr_in {
231 __kernel_sa_family_t sin_family; /* Address family */
232 __be16 sin_port; /* Port number */
233 struct in_addr sin_addr; /* Internet address */
234
235 /* Pad to size of `struct sockaddr'. */
236 unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) -
237 sizeof(unsigned short int) - sizeof(struct in_addr)];
238};
239#define sin_zero __pad /* for BSD UNIX comp. -FvK */
Stephen Hemminger279c6c72015-06-29 14:57:48 -1000240#endif
David Howells607ca462012-10-13 10:46:48 +0100241
Stephen Hemminger279c6c72015-06-29 14:57:48 -1000242#if __UAPI_DEF_IN_CLASS
David Howells607ca462012-10-13 10:46:48 +0100243/*
244 * Definitions of the bits in an Internet address integer.
245 * On subnets, host and network parts are found according
246 * to the subnet mask, not these masks.
247 */
248#define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0)
249#define IN_CLASSA_NET 0xff000000
250#define IN_CLASSA_NSHIFT 24
251#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
252#define IN_CLASSA_MAX 128
253
254#define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000)
255#define IN_CLASSB_NET 0xffff0000
256#define IN_CLASSB_NSHIFT 16
257#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
258#define IN_CLASSB_MAX 65536
259
260#define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000)
261#define IN_CLASSC_NET 0xffffff00
262#define IN_CLASSC_NSHIFT 8
263#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
264
265#define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000)
266#define IN_MULTICAST(a) IN_CLASSD(a)
267#define IN_MULTICAST_NET 0xF0000000
268
269#define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)
270#define IN_BADCLASS(a) IN_EXPERIMENTAL((a))
271
272/* Address to accept any incoming messages. */
273#define INADDR_ANY ((unsigned long int) 0x00000000)
274
275/* Address to send to all hosts. */
276#define INADDR_BROADCAST ((unsigned long int) 0xffffffff)
277
278/* Address indicating an error return. */
279#define INADDR_NONE ((unsigned long int) 0xffffffff)
280
281/* Network number for local host loopback. */
282#define IN_LOOPBACKNET 127
283
284/* Address to loopback in software to local host. */
285#define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */
286#define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)
287
288/* Defines for Multicast INADDR */
289#define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */
290#define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
291#define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
292#define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
Stephen Hemminger279c6c72015-06-29 14:57:48 -1000293#endif
David Howells607ca462012-10-13 10:46:48 +0100294
295/* <asm/byteorder.h> contains the htonl type stuff.. */
296#include <asm/byteorder.h>
297
298
299#endif /* _UAPI_LINUX_IN_H */