| /* |
| * 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; |
| }; |
| |
| /* index values for the variables in ipv4_devconf */ |
| enum |
| { |
| IPV4_DEVCONF_FORWARDING=1, |
| IPV4_DEVCONF_MC_FORWARDING, |
| IPV4_DEVCONF_PROXY_ARP, |
| IPV4_DEVCONF_ACCEPT_REDIRECTS, |
| IPV4_DEVCONF_SECURE_REDIRECTS, |
| IPV4_DEVCONF_SEND_REDIRECTS, |
| IPV4_DEVCONF_SHARED_MEDIA, |
| IPV4_DEVCONF_RP_FILTER, |
| IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE, |
| IPV4_DEVCONF_BOOTP_RELAY, |
| IPV4_DEVCONF_LOG_MARTIANS, |
| IPV4_DEVCONF_TAG, |
| IPV4_DEVCONF_ARPFILTER, |
| IPV4_DEVCONF_MEDIUM_ID, |
| IPV4_DEVCONF_NOXFRM, |
| IPV4_DEVCONF_NOPOLICY, |
| IPV4_DEVCONF_FORCE_IGMP_VERSION, |
| IPV4_DEVCONF_ARP_ANNOUNCE, |
| IPV4_DEVCONF_ARP_IGNORE, |
| IPV4_DEVCONF_PROMOTE_SECONDARIES, |
| IPV4_DEVCONF_ARP_ACCEPT, |
| IPV4_DEVCONF_ARP_NOTIFY, |
| IPV4_DEVCONF_ACCEPT_LOCAL, |
| IPV4_DEVCONF_SRC_VMARK, |
| IPV4_DEVCONF_PROXY_ARP_PVLAN, |
| IPV4_DEVCONF_ROUTE_LOCALNET, |
| IPV4_DEVCONF_IGMPV2_UNSOLICITED_REPORT_INTERVAL, |
| IPV4_DEVCONF_IGMPV3_UNSOLICITED_REPORT_INTERVAL, |
| IPV4_DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN, |
| __IPV4_DEVCONF_MAX |
| }; |
| |
| #define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1) |
| |
| #endif /* _LINUX_IP_H */ |