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1/*
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>
22#include <linux/libc-compat.h>
23#include <linux/socket.h>
24
25#if __UAPI_DEF_IN_IPPROTO
26/* Standard well-defined IP protocols. */
27enum {
28 IPPROTO_IP = 0, /* Dummy protocol for TCP */
29#define IPPROTO_IP IPPROTO_IP
30 IPPROTO_ICMP = 1, /* Internet Control Message Protocol */
31#define IPPROTO_ICMP IPPROTO_ICMP
32 IPPROTO_IGMP = 2, /* Internet Group Management Protocol */
33#define IPPROTO_IGMP IPPROTO_IGMP
34 IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */
35#define IPPROTO_IPIP IPPROTO_IPIP
36 IPPROTO_TCP = 6, /* Transmission Control Protocol */
37#define IPPROTO_TCP IPPROTO_TCP
38 IPPROTO_EGP = 8, /* Exterior Gateway Protocol */
39#define IPPROTO_EGP IPPROTO_EGP
40 IPPROTO_PUP = 12, /* PUP protocol */
41#define IPPROTO_PUP IPPROTO_PUP
42 IPPROTO_UDP = 17, /* User Datagram Protocol */
43#define IPPROTO_UDP IPPROTO_UDP
44 IPPROTO_IDP = 22, /* XNS IDP protocol */
45#define IPPROTO_IDP IPPROTO_IDP
46 IPPROTO_TP = 29, /* SO Transport Protocol Class 4 */
47#define IPPROTO_TP IPPROTO_TP
48 IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol */
49#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
54 IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */
55#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
72 IPPROTO_UDPLITE = 136, /* UDP-Lite (RFC 3828) */
73#define IPPROTO_UDPLITE IPPROTO_UDPLITE
74 IPPROTO_MPLS = 137, /* MPLS in IP (RFC 4023) */
75#define IPPROTO_MPLS IPPROTO_MPLS
76 IPPROTO_RAW = 255, /* Raw IP packets */
77#define IPPROTO_RAW IPPROTO_RAW
78 IPPROTO_MAX
79};
80#endif
81
82#if __UAPI_DEF_IN_ADDR
83/* Internet address. */
84struct in_addr {
85 __be32 s_addr;
86};
87#endif
88
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
118#define IP_CHECKSUM 23
119#define IP_BIND_ADDRESS_NO_PORT 24
120#define IP_RECVFRAGSIZE 25
121
122/* IP_MTU_DISCOVER values */
123#define IP_PMTUDISC_DONT 0 /* Never send DF frames */
124#define IP_PMTUDISC_WANT 1 /* Use per route hints */
125#define IP_PMTUDISC_DO 2 /* Always DF */
126#define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu */
127/* Always use interface mtu (ignores dst pmtu) but don't set DF flag.
128 * Also incoming ICMP frag_needed notifications will be ignored on
129 * this socket to prevent accepting spoofed ones.
130 */
131#define IP_PMTUDISC_INTERFACE 4
132/* weaker version of IP_PMTUDISC_INTERFACE, which allos packets to get
133 * fragmented if they exeed the interface mtu
134 */
135#define IP_PMTUDISC_OMIT 5
136
137#define IP_MULTICAST_IF 32
138#define IP_MULTICAST_TTL 33
139#define IP_MULTICAST_LOOP 34
140#define IP_ADD_MEMBERSHIP 35
141#define IP_DROP_MEMBERSHIP 36
142#define IP_UNBLOCK_SOURCE 37
143#define IP_BLOCK_SOURCE 38
144#define IP_ADD_SOURCE_MEMBERSHIP 39
145#define IP_DROP_SOURCE_MEMBERSHIP 40
146#define IP_MSFILTER 41
147#define MCAST_JOIN_GROUP 42
148#define MCAST_BLOCK_SOURCE 43
149#define MCAST_UNBLOCK_SOURCE 44
150#define MCAST_LEAVE_GROUP 45
151#define MCAST_JOIN_SOURCE_GROUP 46
152#define MCAST_LEAVE_SOURCE_GROUP 47
153#define MCAST_MSFILTER 48
154#define IP_MULTICAST_ALL 49
155#define IP_UNICAST_IF 50
156
157#define MCAST_EXCLUDE 0
158#define MCAST_INCLUDE 1
159
160/* These need to appear somewhere around here */
161#define IP_DEFAULT_MULTICAST_TTL 1
162#define IP_DEFAULT_MULTICAST_LOOP 1
163
164/* Request struct for multicast socket ops */
165
166#if __UAPI_DEF_IP_MREQ
167struct ip_mreq {
168 struct in_addr imr_multiaddr; /* IP multicast address of group */
169 struct in_addr imr_interface; /* local IP address of interface */
170};
171
172struct ip_mreqn {
173 struct in_addr imr_multiaddr; /* IP multicast address of group */
174 struct in_addr imr_address; /* local IP address of interface */
175 int imr_ifindex; /* Interface index */
176};
177
178struct ip_mreq_source {
179 __be32 imr_multiaddr;
180 __be32 imr_interface;
181 __be32 imr_sourceaddr;
182};
183
184struct ip_msfilter {
185 __be32 imsf_multiaddr;
186 __be32 imsf_interface;
187 __u32 imsf_fmode;
188 __u32 imsf_numsrc;
189 __be32 imsf_slist[1];
190};
191
192#define IP_MSFILTER_SIZE(numsrc) \
193 (sizeof(struct ip_msfilter) - sizeof(__u32) \
194 + (numsrc) * sizeof(__u32))
195
196struct group_req {
197 __u32 gr_interface; /* interface index */
198 struct __kernel_sockaddr_storage gr_group; /* group address */
199};
200
201struct group_source_req {
202 __u32 gsr_interface; /* interface index */
203 struct __kernel_sockaddr_storage gsr_group; /* group address */
204 struct __kernel_sockaddr_storage gsr_source; /* source address */
205};
206
207struct group_filter {
208 __u32 gf_interface; /* interface index */
209 struct __kernel_sockaddr_storage gf_group; /* multicast address */
210 __u32 gf_fmode; /* filter mode */
211 __u32 gf_numsrc; /* number of sources */
212 struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */
213};
214
215#define GROUP_FILTER_SIZE(numsrc) \
216 (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \
217 + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
218#endif
219
220#if __UAPI_DEF_IN_PKTINFO
221struct in_pktinfo {
222 int ipi_ifindex;
223 struct in_addr ipi_spec_dst;
224 struct in_addr ipi_addr;
225};
226#endif
227
228/* Structure describing an Internet (IP) socket address. */
229#if __UAPI_DEF_SOCKADDR_IN
230#define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
231struct sockaddr_in {
232 __kernel_sa_family_t sin_family; /* Address family */
233 __be16 sin_port; /* Port number */
234 struct in_addr sin_addr; /* Internet address */
235
236 /* Pad to size of `struct sockaddr'. */
237 unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) -
238 sizeof(unsigned short int) - sizeof(struct in_addr)];
239};
240#define sin_zero __pad /* for BSD UNIX comp. -FvK */
241#endif
242
243#if __UAPI_DEF_IN_CLASS
244/*
245 * Definitions of the bits in an Internet address integer.
246 * On subnets, host and network parts are found according
247 * to the subnet mask, not these masks.
248 */
249#define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0)
250#define IN_CLASSA_NET 0xff000000
251#define IN_CLASSA_NSHIFT 24
252#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
253#define IN_CLASSA_MAX 128
254
255#define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000)
256#define IN_CLASSB_NET 0xffff0000
257#define IN_CLASSB_NSHIFT 16
258#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
259#define IN_CLASSB_MAX 65536
260
261#define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000)
262#define IN_CLASSC_NET 0xffffff00
263#define IN_CLASSC_NSHIFT 8
264#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
265
266#define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000)
267#define IN_MULTICAST(a) IN_CLASSD(a)
268#define IN_MULTICAST_NET 0xF0000000
269
270#define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)
271#define IN_BADCLASS(a) IN_EXPERIMENTAL((a))
272
273/* Address to accept any incoming messages. */
274#define INADDR_ANY ((unsigned long int) 0x00000000)
275
276/* Address to send to all hosts. */
277#define INADDR_BROADCAST ((unsigned long int) 0xffffffff)
278
279/* Address indicating an error return. */
280#define INADDR_NONE ((unsigned long int) 0xffffffff)
281
282/* Network number for local host loopback. */
283#define IN_LOOPBACKNET 127
284
285/* Address to loopback in software to local host. */
286#define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */
287#define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)
288
289/* Defines for Multicast INADDR */
290#define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */
291#define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
292#define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
293#define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
294#endif
295
296/* <asm/byteorder.h> contains the htonl type stuff.. */
297#include <asm/byteorder.h>
298
299
300#endif /* _UAPI_LINUX_IN_H */