1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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.
7 * Definitions for the IP protocol.
9 * Version: @(#)ip.h 1.0.2 04/28/93
11 * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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.
18 #ifndef _UAPI_LINUX_IP_H
19 #define _UAPI_LINUX_IP_H
20 #include <linux/types.h>
21 #include <asm/byteorder.h>
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
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
43 #define IPOPT_COPY 0x80
44 #define IPOPT_CLASS_MASK 0x60
45 #define IPOPT_NUMBER_MASK 0x1f
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)
51 #define IPOPT_CONTROL 0x00
52 #define IPOPT_RESERVED1 0x20
53 #define IPOPT_MEASUREMENT 0x40
54 #define IPOPT_RESERVED2 0x60
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)
71 #define IPOPT_OPTVAL 0
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
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 */
84 #define IPV4_BEET_PHMAXLEN 8
87 #if defined(__LITTLE_ENDIAN_BITFIELD)
90 #elif defined (__BIG_ENDIAN_BITFIELD)
94 #error "Please fix <asm/byteorder.h>"
105 /*The options start here. */
111 __u8 hdrlen; /* This one is measured in 32 bit units! */
114 __be32 seq_no; /* Sequence number */
115 __u8 auth_data[0]; /* Variable len but >=4. Mind the 64 bit alignment! */
120 __be32 seq_no; /* Sequence number */
121 __u8 enc_data[0]; /* Variable len but >=8. Mind the 64 bit alignment! */
130 struct ip_beet_phdr {
137 /* index values for the variables in ipv4_devconf */
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,
152 IPV4_DEVCONF_ARPFILTER,
153 IPV4_DEVCONF_MEDIUM_ID,
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,
166 IPV4_DEVCONF_IGMPV2_UNSOLICITED_REPORT_INTERVAL,
167 IPV4_DEVCONF_IGMPV3_UNSOLICITED_REPORT_INTERVAL,
168 IPV4_DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN,
169 IPV4_DEVCONF_DROP_UNICAST_IN_L2_MULTICAST,
170 IPV4_DEVCONF_DROP_GRATUITOUS_ARP,
174 #define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1)
176 #endif /* _UAPI_LINUX_IP_H */