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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/socket.h>
23
24/* Standard well-defined IP protocols. */
25enum {
26 IPPROTO_IP = 0, /* Dummy protocol for TCP */
27#define IPPROTO_IP IPPROTO_IP
28 IPPROTO_ICMP = 1, /* Internet Control Message Protocol */
29#define IPPROTO_ICMP IPPROTO_ICMP
30 IPPROTO_IGMP = 2, /* Internet Group Management Protocol */
31#define IPPROTO_IGMP IPPROTO_IGMP
32 IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */
33#define IPPROTO_IPIP IPPROTO_IPIP
34 IPPROTO_TCP = 6, /* Transmission Control Protocol */
35#define IPPROTO_TCP IPPROTO_TCP
36 IPPROTO_EGP = 8, /* Exterior Gateway Protocol */
37#define IPPROTO_EGP IPPROTO_EGP
38 IPPROTO_PUP = 12, /* PUP protocol */
39#define IPPROTO_PUP IPPROTO_PUP
40 IPPROTO_UDP = 17, /* User Datagram Protocol */
41#define IPPROTO_UDP IPPROTO_UDP
42 IPPROTO_IDP = 22, /* XNS IDP protocol */
43#define IPPROTO_IDP IPPROTO_IDP
44 IPPROTO_TP = 29, /* SO Transport Protocol Class 4 */
45#define IPPROTO_TP IPPROTO_TP
46 IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol */
47#define IPPROTO_DCCP IPPROTO_DCCP
48 IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */
49#define IPPROTO_IPV6 IPPROTO_IPV6
50 IPPROTO_RSVP = 46, /* RSVP Protocol */
51#define IPPROTO_RSVP IPPROTO_RSVP
52 IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */
53#define IPPROTO_GRE IPPROTO_GRE
54 IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */
55#define IPPROTO_ESP IPPROTO_ESP
56 IPPROTO_AH = 51, /* Authentication Header protocol */
57#define IPPROTO_AH IPPROTO_AH
58 IPPROTO_MTP = 92, /* Multicast Transport Protocol */
59#define IPPROTO_MTP IPPROTO_MTP
60 IPPROTO_BEETPH = 94, /* IP option pseudo header for BEET */
61#define IPPROTO_BEETPH IPPROTO_BEETPH
62 IPPROTO_ENCAP = 98, /* Encapsulation Header */
63#define IPPROTO_ENCAP IPPROTO_ENCAP
64 IPPROTO_PIM = 103, /* Protocol Independent Multicast */
65#define IPPROTO_PIM IPPROTO_PIM
66 IPPROTO_COMP = 108, /* Compression Header Protocol */
67#define IPPROTO_COMP IPPROTO_COMP
68 IPPROTO_SCTP = 132, /* Stream Control Transport Protocol */
69#define IPPROTO_SCTP IPPROTO_SCTP
70 IPPROTO_UDPLITE = 136, /* UDP-Lite (RFC 3828) */
71#define IPPROTO_UDPLITE IPPROTO_UDPLITE
72 IPPROTO_RAW = 255, /* Raw IP packets */
73#define IPPROTO_RAW IPPROTO_RAW
74 IPPROTO_MAX
75};
76
77
78/* Internet address. */
79struct in_addr {
80 __be32 s_addr;
81};
82
83#define IP_TOS 1
84#define IP_TTL 2
85#define IP_HDRINCL 3
86#define IP_OPTIONS 4
87#define IP_ROUTER_ALERT 5
88#define IP_RECVOPTS 6
89#define IP_RETOPTS 7
90#define IP_PKTINFO 8
91#define IP_PKTOPTIONS 9
92#define IP_MTU_DISCOVER 10
93#define IP_RECVERR 11
94#define IP_RECVTTL 12
95#define IP_RECVTOS 13
96#define IP_MTU 14
97#define IP_FREEBIND 15
98#define IP_IPSEC_POLICY 16
99#define IP_XFRM_POLICY 17
100#define IP_PASSSEC 18
101#define IP_TRANSPARENT 19
102
103/* BSD compatibility */
104#define IP_RECVRETOPTS IP_RETOPTS
105
106/* TProxy original addresses */
107#define IP_ORIGDSTADDR 20
108#define IP_RECVORIGDSTADDR IP_ORIGDSTADDR
109
110#define IP_MINTTL 21
111#define IP_NODEFRAG 22
112
113/* IP_MTU_DISCOVER values */
114#define IP_PMTUDISC_DONT 0 /* Never send DF frames */
115#define IP_PMTUDISC_WANT 1 /* Use per route hints */
116#define IP_PMTUDISC_DO 2 /* Always DF */
117#define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu */
118
119#define IP_MULTICAST_IF 32
120#define IP_MULTICAST_TTL 33
121#define IP_MULTICAST_LOOP 34
122#define IP_ADD_MEMBERSHIP 35
123#define IP_DROP_MEMBERSHIP 36
124#define IP_UNBLOCK_SOURCE 37
125#define IP_BLOCK_SOURCE 38
126#define IP_ADD_SOURCE_MEMBERSHIP 39
127#define IP_DROP_SOURCE_MEMBERSHIP 40
128#define IP_MSFILTER 41
129#define MCAST_JOIN_GROUP 42
130#define MCAST_BLOCK_SOURCE 43
131#define MCAST_UNBLOCK_SOURCE 44
132#define MCAST_LEAVE_GROUP 45
133#define MCAST_JOIN_SOURCE_GROUP 46
134#define MCAST_LEAVE_SOURCE_GROUP 47
135#define MCAST_MSFILTER 48
136#define IP_MULTICAST_ALL 49
137#define IP_UNICAST_IF 50
138
139#define MCAST_EXCLUDE 0
140#define MCAST_INCLUDE 1
141
142/* These need to appear somewhere around here */
143#define IP_DEFAULT_MULTICAST_TTL 1
144#define IP_DEFAULT_MULTICAST_LOOP 1
145
146/* Request struct for multicast socket ops */
147
148struct ip_mreq {
149 struct in_addr imr_multiaddr; /* IP multicast address of group */
150 struct in_addr imr_interface; /* local IP address of interface */
151};
152
153struct ip_mreqn {
154 struct in_addr imr_multiaddr; /* IP multicast address of group */
155 struct in_addr imr_address; /* local IP address of interface */
156 int imr_ifindex; /* Interface index */
157};
158
159struct ip_mreq_source {
160 __be32 imr_multiaddr;
161 __be32 imr_interface;
162 __be32 imr_sourceaddr;
163};
164
165struct ip_msfilter {
166 __be32 imsf_multiaddr;
167 __be32 imsf_interface;
168 __u32 imsf_fmode;
169 __u32 imsf_numsrc;
170 __be32 imsf_slist[1];
171};
172
173#define IP_MSFILTER_SIZE(numsrc) \
174 (sizeof(struct ip_msfilter) - sizeof(__u32) \
175 + (numsrc) * sizeof(__u32))
176
177struct group_req {
178 __u32 gr_interface; /* interface index */
179 struct __kernel_sockaddr_storage gr_group; /* group address */
180};
181
182struct group_source_req {
183 __u32 gsr_interface; /* interface index */
184 struct __kernel_sockaddr_storage gsr_group; /* group address */
185 struct __kernel_sockaddr_storage gsr_source; /* source address */
186};
187
188struct group_filter {
189 __u32 gf_interface; /* interface index */
190 struct __kernel_sockaddr_storage gf_group; /* multicast address */
191 __u32 gf_fmode; /* filter mode */
192 __u32 gf_numsrc; /* number of sources */
193 struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */
194};
195
196#define GROUP_FILTER_SIZE(numsrc) \
197 (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \
198 + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
199
200struct in_pktinfo {
201 int ipi_ifindex;
202 struct in_addr ipi_spec_dst;
203 struct in_addr ipi_addr;
204};
205
206/* Structure describing an Internet (IP) socket address. */
207#define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
208struct sockaddr_in {
209 __kernel_sa_family_t sin_family; /* Address family */
210 __be16 sin_port; /* Port number */
211 struct in_addr sin_addr; /* Internet address */
212
213 /* Pad to size of `struct sockaddr'. */
214 unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) -
215 sizeof(unsigned short int) - sizeof(struct in_addr)];
216};
217#define sin_zero __pad /* for BSD UNIX comp. -FvK */
218
219
220/*
221 * Definitions of the bits in an Internet address integer.
222 * On subnets, host and network parts are found according
223 * to the subnet mask, not these masks.
224 */
225#define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0)
226#define IN_CLASSA_NET 0xff000000
227#define IN_CLASSA_NSHIFT 24
228#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
229#define IN_CLASSA_MAX 128
230
231#define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000)
232#define IN_CLASSB_NET 0xffff0000
233#define IN_CLASSB_NSHIFT 16
234#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
235#define IN_CLASSB_MAX 65536
236
237#define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000)
238#define IN_CLASSC_NET 0xffffff00
239#define IN_CLASSC_NSHIFT 8
240#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
241
242#define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000)
243#define IN_MULTICAST(a) IN_CLASSD(a)
244#define IN_MULTICAST_NET 0xF0000000
245
246#define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)
247#define IN_BADCLASS(a) IN_EXPERIMENTAL((a))
248
249/* Address to accept any incoming messages. */
250#define INADDR_ANY ((unsigned long int) 0x00000000)
251
252/* Address to send to all hosts. */
253#define INADDR_BROADCAST ((unsigned long int) 0xffffffff)
254
255/* Address indicating an error return. */
256#define INADDR_NONE ((unsigned long int) 0xffffffff)
257
258/* Network number for local host loopback. */
259#define IN_LOOPBACKNET 127
260
261/* Address to loopback in software to local host. */
262#define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */
263#define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)
264
265/* Defines for Multicast INADDR */
266#define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */
267#define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
268#define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
269#define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
270
271
272/* <asm/byteorder.h> contains the htonl type stuff.. */
273#include <asm/byteorder.h>
274
275
276#endif /* _UAPI_LINUX_IN_H */