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. */
25 enum {
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. */
79 struct 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 #define IP_CHECKSUM 23
113
114 /* IP_MTU_DISCOVER values */
115 #define IP_PMTUDISC_DONT 0 /* Never send DF frames */
116 #define IP_PMTUDISC_WANT 1 /* Use per route hints */
117 #define IP_PMTUDISC_DO 2 /* Always DF */
118 #define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu */
119 /* Always use interface mtu (ignores dst pmtu) but don't set DF flag.
120 * Also incoming ICMP frag_needed notifications will be ignored on
121 * this socket to prevent accepting spoofed ones.
122 */
123 #define IP_PMTUDISC_INTERFACE 4
124 /* weaker version of IP_PMTUDISC_INTERFACE, which allos packets to get
125 * fragmented if they exeed the interface mtu
126 */
127 #define IP_PMTUDISC_OMIT 5
128
129 #define IP_MULTICAST_IF 32
130 #define IP_MULTICAST_TTL 33
131 #define IP_MULTICAST_LOOP 34
132 #define IP_ADD_MEMBERSHIP 35
133 #define IP_DROP_MEMBERSHIP 36
134 #define IP_UNBLOCK_SOURCE 37
135 #define IP_BLOCK_SOURCE 38
136 #define IP_ADD_SOURCE_MEMBERSHIP 39
137 #define IP_DROP_SOURCE_MEMBERSHIP 40
138 #define IP_MSFILTER 41
139 #define MCAST_JOIN_GROUP 42
140 #define MCAST_BLOCK_SOURCE 43
141 #define MCAST_UNBLOCK_SOURCE 44
142 #define MCAST_LEAVE_GROUP 45
143 #define MCAST_JOIN_SOURCE_GROUP 46
144 #define MCAST_LEAVE_SOURCE_GROUP 47
145 #define MCAST_MSFILTER 48
146 #define IP_MULTICAST_ALL 49
147 #define IP_UNICAST_IF 50
148
149 #define MCAST_EXCLUDE 0
150 #define MCAST_INCLUDE 1
151
152 /* These need to appear somewhere around here */
153 #define IP_DEFAULT_MULTICAST_TTL 1
154 #define IP_DEFAULT_MULTICAST_LOOP 1
155
156 /* Request struct for multicast socket ops */
157
158 struct ip_mreq {
159 struct in_addr imr_multiaddr; /* IP multicast address of group */
160 struct in_addr imr_interface; /* local IP address of interface */
161 };
162
163 struct ip_mreqn {
164 struct in_addr imr_multiaddr; /* IP multicast address of group */
165 struct in_addr imr_address; /* local IP address of interface */
166 int imr_ifindex; /* Interface index */
167 };
168
169 struct ip_mreq_source {
170 __be32 imr_multiaddr;
171 __be32 imr_interface;
172 __be32 imr_sourceaddr;
173 };
174
175 struct ip_msfilter {
176 __be32 imsf_multiaddr;
177 __be32 imsf_interface;
178 __u32 imsf_fmode;
179 __u32 imsf_numsrc;
180 __be32 imsf_slist[1];
181 };
182
183 #define IP_MSFILTER_SIZE(numsrc) \
184 (sizeof(struct ip_msfilter) - sizeof(__u32) \
185 + (numsrc) * sizeof(__u32))
186
187 struct group_req {
188 __u32 gr_interface; /* interface index */
189 struct __kernel_sockaddr_storage gr_group; /* group address */
190 };
191
192 struct group_source_req {
193 __u32 gsr_interface; /* interface index */
194 struct __kernel_sockaddr_storage gsr_group; /* group address */
195 struct __kernel_sockaddr_storage gsr_source; /* source address */
196 };
197
198 struct group_filter {
199 __u32 gf_interface; /* interface index */
200 struct __kernel_sockaddr_storage gf_group; /* multicast address */
201 __u32 gf_fmode; /* filter mode */
202 __u32 gf_numsrc; /* number of sources */
203 struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */
204 };
205
206 #define GROUP_FILTER_SIZE(numsrc) \
207 (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \
208 + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
209
210 struct in_pktinfo {
211 int ipi_ifindex;
212 struct in_addr ipi_spec_dst;
213 struct in_addr ipi_addr;
214 };
215
216 /* Structure describing an Internet (IP) socket address. */
217 #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
218 struct sockaddr_in {
219 __kernel_sa_family_t sin_family; /* Address family */
220 __be16 sin_port; /* Port number */
221 struct in_addr sin_addr; /* Internet address */
222
223 /* Pad to size of `struct sockaddr'. */
224 unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) -
225 sizeof(unsigned short int) - sizeof(struct in_addr)];
226 };
227 #define sin_zero __pad /* for BSD UNIX comp. -FvK */
228
229
230 /*
231 * Definitions of the bits in an Internet address integer.
232 * On subnets, host and network parts are found according
233 * to the subnet mask, not these masks.
234 */
235 #define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0)
236 #define IN_CLASSA_NET 0xff000000
237 #define IN_CLASSA_NSHIFT 24
238 #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
239 #define IN_CLASSA_MAX 128
240
241 #define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000)
242 #define IN_CLASSB_NET 0xffff0000
243 #define IN_CLASSB_NSHIFT 16
244 #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
245 #define IN_CLASSB_MAX 65536
246
247 #define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000)
248 #define IN_CLASSC_NET 0xffffff00
249 #define IN_CLASSC_NSHIFT 8
250 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
251
252 #define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000)
253 #define IN_MULTICAST(a) IN_CLASSD(a)
254 #define IN_MULTICAST_NET 0xF0000000
255
256 #define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)
257 #define IN_BADCLASS(a) IN_EXPERIMENTAL((a))
258
259 /* Address to accept any incoming messages. */
260 #define INADDR_ANY ((unsigned long int) 0x00000000)
261
262 /* Address to send to all hosts. */
263 #define INADDR_BROADCAST ((unsigned long int) 0xffffffff)
264
265 /* Address indicating an error return. */
266 #define INADDR_NONE ((unsigned long int) 0xffffffff)
267
268 /* Network number for local host loopback. */
269 #define IN_LOOPBACKNET 127
270
271 /* Address to loopback in software to local host. */
272 #define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */
273 #define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)
274
275 /* Defines for Multicast INADDR */
276 #define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */
277 #define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
278 #define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
279 #define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
280
281
282 /* <asm/byteorder.h> contains the htonl type stuff.. */
283 #include <asm/byteorder.h>
284
285
286 #endif /* _UAPI_LINUX_IN_H */
287
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.