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- /*
- * INET An implementation of the TCP/IP protocol suite for the LINUX
- * operating system. INET is implemented using the BSD Socket
- * interface as the means of communication with the user level.
- *
- * Definitions for the IP protocol.
- *
- * Version: @(#)ip.h 1.0.2 04/28/93
- *
- * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
- #ifndef _LINUX_IP_H
- #define _LINUX_IP_H
- #include <linux/types.h>
- #include <asm/byteorder.h>
-
- #define IPTOS_TOS_MASK 0x1E
- #define IPTOS_TOS(tos) ((tos)&IPTOS_TOS_MASK)
- #define IPTOS_LOWDELAY 0x10
- #define IPTOS_THROUGHPUT 0x08
- #define IPTOS_RELIABILITY 0x04
- #define IPTOS_MINCOST 0x02
-
- #define IPTOS_PREC_MASK 0xE0
- #define IPTOS_PREC(tos) ((tos)&IPTOS_PREC_MASK)
- #define IPTOS_PREC_NETCONTROL 0xe0
- #define IPTOS_PREC_INTERNETCONTROL 0xc0
- #define IPTOS_PREC_CRITIC_ECP 0xa0
- #define IPTOS_PREC_FLASHOVERRIDE 0x80
- #define IPTOS_PREC_FLASH 0x60
- #define IPTOS_PREC_IMMEDIATE 0x40
- #define IPTOS_PREC_PRIORITY 0x20
- #define IPTOS_PREC_ROUTINE 0x00
-
-
- /* IP options */
- #define IPOPT_COPY 0x80
- #define IPOPT_CLASS_MASK 0x60
- #define IPOPT_NUMBER_MASK 0x1f
-
- #define IPOPT_COPIED(o) ((o)&IPOPT_COPY)
- #define IPOPT_CLASS(o) ((o)&IPOPT_CLASS_MASK)
- #define IPOPT_NUMBER(o) ((o)&IPOPT_NUMBER_MASK)
-
- #define IPOPT_CONTROL 0x00
- #define IPOPT_RESERVED1 0x20
- #define IPOPT_MEASUREMENT 0x40
- #define IPOPT_RESERVED2 0x60
-
- #define IPOPT_END (0 |IPOPT_CONTROL)
- #define IPOPT_NOOP (1 |IPOPT_CONTROL)
- #define IPOPT_SEC (2 |IPOPT_CONTROL|IPOPT_COPY)
- #define IPOPT_LSRR (3 |IPOPT_CONTROL|IPOPT_COPY)
- #define IPOPT_TIMESTAMP (4 |IPOPT_MEASUREMENT)
- #define IPOPT_CIPSO (6 |IPOPT_CONTROL|IPOPT_COPY)
- #define IPOPT_RR (7 |IPOPT_CONTROL)
- #define IPOPT_SID (8 |IPOPT_CONTROL|IPOPT_COPY)
- #define IPOPT_SSRR (9 |IPOPT_CONTROL|IPOPT_COPY)
- #define IPOPT_RA (20|IPOPT_CONTROL|IPOPT_COPY)
-
- #define IPVERSION 4
- #define MAXTTL 255
- #define IPDEFTTL 64
-
- #define IPOPT_OPTVAL 0
- #define IPOPT_OLEN 1
- #define IPOPT_OFFSET 2
- #define IPOPT_MINOFF 4
- #define MAX_IPOPTLEN 40
- #define IPOPT_NOP IPOPT_NOOP
- #define IPOPT_EOL IPOPT_END
- #define IPOPT_TS IPOPT_TIMESTAMP
-
- #define IPOPT_TS_TSONLY 0 /* timestamps only */
- #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
- #define IPOPT_TS_PRESPEC 3 /* specified modules only */
-
- #define IPV4_BEET_PHMAXLEN 8
-
- struct iphdr {
- #if defined(__LITTLE_ENDIAN_BITFIELD)
- __u8 ihl:4,
- version:4;
- #elif defined (__BIG_ENDIAN_BITFIELD)
- __u8 version:4,
- ihl:4;
- #else
- #error "Please fix <asm/byteorder.h>"
- #endif
- __u8 tos;
- __be16 tot_len;
- __be16 id;
- __be16 frag_off;
- __u8 ttl;
- __u8 protocol;
- __sum16 check;
- __be32 saddr;
- __be32 daddr;
- /*The options start here. */
- };
-
-
- struct ip_auth_hdr {
- __u8 nexthdr;
- __u8 hdrlen; /* This one is measured in 32 bit units! */
- __be16 reserved;
- __be32 spi;
- __be32 seq_no; /* Sequence number */
- __u8 auth_data[0]; /* Variable len but >=4. Mind the 64 bit alignment! */
- };
-
- struct ip_esp_hdr {
- __be32 spi;
- __be32 seq_no; /* Sequence number */
- __u8 enc_data[0]; /* Variable len but >=8. Mind the 64 bit alignment! */
- };
-
- struct ip_comp_hdr {
- __u8 nexthdr;
- __u8 flags;
- __be16 cpi;
- };
-
- struct ip_beet_phdr {
- __u8 nexthdr;
- __u8 hdrlen;
- __u8 padlen;
- __u8 reserved;
- };
-
- #endif /* _LINUX_IP_H */
-