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