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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
607ca46e DH |
2 | /* |
3 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
4 | * operating system. INET is implemented using the BSD Socket | |
5 | * interface as the means of communication with the user level. | |
6 | * | |
7 | * Definitions for the IP protocol. | |
8 | * | |
9 | * Version: @(#)ip.h 1.0.2 04/28/93 | |
10 | * | |
11 | * Authors: 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_IP_H | |
19 | #define _UAPI_LINUX_IP_H | |
20 | #include <linux/types.h> | |
21 | #include <asm/byteorder.h> | |
22 | ||
23 | #define IPTOS_TOS_MASK 0x1E | |
24 | #define IPTOS_TOS(tos) ((tos)&IPTOS_TOS_MASK) | |
25 | #define IPTOS_LOWDELAY 0x10 | |
26 | #define IPTOS_THROUGHPUT 0x08 | |
27 | #define IPTOS_RELIABILITY 0x04 | |
28 | #define IPTOS_MINCOST 0x02 | |
29 | ||
30 | #define IPTOS_PREC_MASK 0xE0 | |
31 | #define IPTOS_PREC(tos) ((tos)&IPTOS_PREC_MASK) | |
32 | #define IPTOS_PREC_NETCONTROL 0xe0 | |
33 | #define IPTOS_PREC_INTERNETCONTROL 0xc0 | |
34 | #define IPTOS_PREC_CRITIC_ECP 0xa0 | |
35 | #define IPTOS_PREC_FLASHOVERRIDE 0x80 | |
36 | #define IPTOS_PREC_FLASH 0x60 | |
37 | #define IPTOS_PREC_IMMEDIATE 0x40 | |
38 | #define IPTOS_PREC_PRIORITY 0x20 | |
39 | #define IPTOS_PREC_ROUTINE 0x00 | |
40 | ||
41 | ||
42 | /* IP options */ | |
43 | #define IPOPT_COPY 0x80 | |
44 | #define IPOPT_CLASS_MASK 0x60 | |
45 | #define IPOPT_NUMBER_MASK 0x1f | |
46 | ||
47 | #define IPOPT_COPIED(o) ((o)&IPOPT_COPY) | |
48 | #define IPOPT_CLASS(o) ((o)&IPOPT_CLASS_MASK) | |
49 | #define IPOPT_NUMBER(o) ((o)&IPOPT_NUMBER_MASK) | |
50 | ||
51 | #define IPOPT_CONTROL 0x00 | |
52 | #define IPOPT_RESERVED1 0x20 | |
53 | #define IPOPT_MEASUREMENT 0x40 | |
54 | #define IPOPT_RESERVED2 0x60 | |
55 | ||
56 | #define IPOPT_END (0 |IPOPT_CONTROL) | |
57 | #define IPOPT_NOOP (1 |IPOPT_CONTROL) | |
58 | #define IPOPT_SEC (2 |IPOPT_CONTROL|IPOPT_COPY) | |
59 | #define IPOPT_LSRR (3 |IPOPT_CONTROL|IPOPT_COPY) | |
60 | #define IPOPT_TIMESTAMP (4 |IPOPT_MEASUREMENT) | |
61 | #define IPOPT_CIPSO (6 |IPOPT_CONTROL|IPOPT_COPY) | |
62 | #define IPOPT_RR (7 |IPOPT_CONTROL) | |
63 | #define IPOPT_SID (8 |IPOPT_CONTROL|IPOPT_COPY) | |
64 | #define IPOPT_SSRR (9 |IPOPT_CONTROL|IPOPT_COPY) | |
65 | #define IPOPT_RA (20|IPOPT_CONTROL|IPOPT_COPY) | |
66 | ||
67 | #define IPVERSION 4 | |
68 | #define MAXTTL 255 | |
69 | #define IPDEFTTL 64 | |
70 | ||
71 | #define IPOPT_OPTVAL 0 | |
72 | #define IPOPT_OLEN 1 | |
73 | #define IPOPT_OFFSET 2 | |
74 | #define IPOPT_MINOFF 4 | |
75 | #define MAX_IPOPTLEN 40 | |
76 | #define IPOPT_NOP IPOPT_NOOP | |
77 | #define IPOPT_EOL IPOPT_END | |
78 | #define IPOPT_TS IPOPT_TIMESTAMP | |
79 | ||
80 | #define IPOPT_TS_TSONLY 0 /* timestamps only */ | |
81 | #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */ | |
82 | #define IPOPT_TS_PRESPEC 3 /* specified modules only */ | |
83 | ||
84 | #define IPV4_BEET_PHMAXLEN 8 | |
85 | ||
86 | struct iphdr { | |
87 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
88 | __u8 ihl:4, | |
89 | version:4; | |
90 | #elif defined (__BIG_ENDIAN_BITFIELD) | |
91 | __u8 version:4, | |
92 | ihl:4; | |
93 | #else | |
94 | #error "Please fix <asm/byteorder.h>" | |
95 | #endif | |
96 | __u8 tos; | |
97 | __be16 tot_len; | |
98 | __be16 id; | |
99 | __be16 frag_off; | |
100 | __u8 ttl; | |
101 | __u8 protocol; | |
102 | __sum16 check; | |
103 | __be32 saddr; | |
104 | __be32 daddr; | |
105 | /*The options start here. */ | |
106 | }; | |
107 | ||
108 | ||
109 | struct ip_auth_hdr { | |
110 | __u8 nexthdr; | |
111 | __u8 hdrlen; /* This one is measured in 32 bit units! */ | |
112 | __be16 reserved; | |
113 | __be32 spi; | |
114 | __be32 seq_no; /* Sequence number */ | |
115 | __u8 auth_data[0]; /* Variable len but >=4. Mind the 64 bit alignment! */ | |
116 | }; | |
117 | ||
118 | struct ip_esp_hdr { | |
119 | __be32 spi; | |
120 | __be32 seq_no; /* Sequence number */ | |
121 | __u8 enc_data[0]; /* Variable len but >=8. Mind the 64 bit alignment! */ | |
122 | }; | |
123 | ||
124 | struct ip_comp_hdr { | |
125 | __u8 nexthdr; | |
126 | __u8 flags; | |
127 | __be16 cpi; | |
128 | }; | |
129 | ||
130 | struct ip_beet_phdr { | |
131 | __u8 nexthdr; | |
132 | __u8 hdrlen; | |
133 | __u8 padlen; | |
134 | __u8 reserved; | |
135 | }; | |
136 | ||
4a5a8aa6 | 137 | /* index values for the variables in ipv4_devconf */ |
138 | enum | |
139 | { | |
140 | IPV4_DEVCONF_FORWARDING=1, | |
141 | IPV4_DEVCONF_MC_FORWARDING, | |
142 | IPV4_DEVCONF_PROXY_ARP, | |
143 | IPV4_DEVCONF_ACCEPT_REDIRECTS, | |
144 | IPV4_DEVCONF_SECURE_REDIRECTS, | |
145 | IPV4_DEVCONF_SEND_REDIRECTS, | |
146 | IPV4_DEVCONF_SHARED_MEDIA, | |
147 | IPV4_DEVCONF_RP_FILTER, | |
148 | IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE, | |
149 | IPV4_DEVCONF_BOOTP_RELAY, | |
150 | IPV4_DEVCONF_LOG_MARTIANS, | |
151 | IPV4_DEVCONF_TAG, | |
152 | IPV4_DEVCONF_ARPFILTER, | |
153 | IPV4_DEVCONF_MEDIUM_ID, | |
154 | IPV4_DEVCONF_NOXFRM, | |
155 | IPV4_DEVCONF_NOPOLICY, | |
156 | IPV4_DEVCONF_FORCE_IGMP_VERSION, | |
157 | IPV4_DEVCONF_ARP_ANNOUNCE, | |
158 | IPV4_DEVCONF_ARP_IGNORE, | |
159 | IPV4_DEVCONF_PROMOTE_SECONDARIES, | |
160 | IPV4_DEVCONF_ARP_ACCEPT, | |
161 | IPV4_DEVCONF_ARP_NOTIFY, | |
162 | IPV4_DEVCONF_ACCEPT_LOCAL, | |
163 | IPV4_DEVCONF_SRC_VMARK, | |
164 | IPV4_DEVCONF_PROXY_ARP_PVLAN, | |
165 | IPV4_DEVCONF_ROUTE_LOCALNET, | |
b05930f5 DM |
166 | IPV4_DEVCONF_IGMPV2_UNSOLICITED_REPORT_INTERVAL, |
167 | IPV4_DEVCONF_IGMPV3_UNSOLICITED_REPORT_INTERVAL, | |
0eeb075f | 168 | IPV4_DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN, |
12b74dfa | 169 | IPV4_DEVCONF_DROP_UNICAST_IN_L2_MULTICAST, |
97daf331 | 170 | IPV4_DEVCONF_DROP_GRATUITOUS_ARP, |
4a5a8aa6 | 171 | __IPV4_DEVCONF_MAX |
172 | }; | |
173 | ||
174 | #define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1) | |
175 | ||
607ca46e | 176 | #endif /* _UAPI_LINUX_IP_H */ |