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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 | /* * 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 <asm/byteorder.h> #define IPOPT_END 0 #define IPOPT_NOOP 1 #define IPOPT_SEC 130 #define IPOPT_LSRR 131 #define IPOPT_SSRR 137 #define IPOPT_RR 7 #define IPOPT_SID 136 #define IPOPT_TIMESTAMP 68 #define MAXTTL 255 struct timestamp { __u8 len; __u8 ptr; #if defined(__LITTLE_ENDIAN_BITFIELD) __u8 flags:4, overflow:4; #elif defined(__BIG_ENDIAN_BITFIELD) __u8 overflow:4, flags:4; #else #error "Please fix <asm/byteorder.h>" #endif __u32 data[9]; }; #define MAX_ROUTE 16 struct route { char route_size; char pointer; unsigned long route[MAX_ROUTE]; }; #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 */ struct options { __u32 faddr; /* Saved first hop address */ unsigned char optlen; unsigned char srr; unsigned char rr; unsigned char ts; unsigned char is_setbyuser:1, /* Set by setsockopt? */ is_data:1, /* Options in __data, rather than skb */ is_strictroute:1, /* Strict source route */ srr_is_hit:1, /* Packet destination addr was our one */ is_changed:1, /* IP checksum more not valid */ rr_needaddr:1, /* Need to record addr of outgoing dev */ ts_needtime:1, /* Need to record timestamp */ ts_needaddr:1; /* Need to record addr of outgoing dev */ unsigned char __pad1; unsigned char __pad2; unsigned char __pad3; unsigned char __data[0]; }; 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; __u16 tot_len; __u16 id; __u16 frag_off; __u8 ttl; __u8 protocol; __u16 check; __u32 saddr; __u32 daddr; /*The options start here. */ }; #endif /* _LINUX_IP_H */ |