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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | #ifndef _NETINET_IP_H |
| 2 | #define _NETINET_IP_H |
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| 3 | |||
| 4 | #include |
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| 5 | #include |
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| 6 | #include |
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| 7 | |||
| 8 | __BEGIN_DECLS |
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| 9 | |||
| 10 | #define IPVERSION 4 /* IP version number */ |
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| 11 | #define IP_MAXPACKET 65535 /* maximum packet size */ |
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| 12 | |||
| 13 | #define IPTOS_TOS_MASK 0x1E |
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| 14 | #define IPTOS_TOS(tos) ((tos)&IPTOS_TOS_MASK) |
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| 15 | #define IPTOS_LOWDELAY 0x10 |
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| 16 | #define IPTOS_THROUGHPUT 0x08 |
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| 17 | #define IPTOS_RELIABILITY 0x04 |
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| 18 | #define IPTOS_MINCOST 0x02 |
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| 19 | #define IPTOS_LOWCOST IPTOS_MINCOST |
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| 20 | |||
| 21 | #define IPTOS_PREC_MASK 0xE0 |
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| 22 | #define IPTOS_PREC(tos) ((tos)&IPTOS_PREC_MASK) |
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| 23 | #define IPTOS_PREC_NETCONTROL 0xe0 |
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| 24 | #define IPTOS_PREC_INTERNETCONTROL 0xc0 |
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| 25 | #define IPTOS_PREC_CRITIC_ECP 0xa0 |
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| 26 | #define IPTOS_PREC_FLASHOVERRIDE 0x80 |
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| 27 | #define IPTOS_PREC_FLASH 0x60 |
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| 28 | #define IPTOS_PREC_IMMEDIATE 0x40 |
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| 29 | #define IPTOS_PREC_PRIORITY 0x20 |
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| 30 | #define IPTOS_PREC_ROUTINE 0x00 |
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| 31 | |||
| 32 | |||
| 33 | /* IP options */ |
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| 34 | #define IPOPT_COPY 0x80 |
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| 35 | #define IPOPT_CLASS_MASK 0x60 |
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| 36 | #define IPOPT_NUMBER_MASK 0x1f |
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| 37 | |||
| 38 | #define IPOPT_COPIED(o) ((o)&IPOPT_COPY) |
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| 39 | #define IPOPT_CLASS(o) ((o)&IPOPT_CLASS_MASK) |
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| 40 | #define IPOPT_NUMBER(o) ((o)&IPOPT_NUMBER_MASK) |
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| 41 | |||
| 42 | #define IPOPT_CONTROL 0x00 |
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| 43 | #define IPOPT_RESERVED1 0x20 |
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| 44 | #define IPOPT_MEASUREMENT 0x40 |
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| 45 | #define IPOPT_RESERVED2 0x60 |
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| 46 | |||
| 47 | #define IPOPT_END (0 |IPOPT_CONTROL) |
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| 48 | #define IPOPT_NOOP (1 |IPOPT_CONTROL) |
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| 49 | #define IPOPT_SEC (2 |IPOPT_CONTROL|IPOPT_COPY) |
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| 50 | #define IPOPT_LSRR (3 |IPOPT_CONTROL|IPOPT_COPY) |
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| 51 | #define IPOPT_TIMESTAMP (4 |IPOPT_MEASUREMENT) |
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| 52 | #define IPOPT_RR (7 |IPOPT_CONTROL) |
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| 53 | #define IPOPT_SID (8 |IPOPT_CONTROL|IPOPT_COPY) |
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| 54 | #define IPOPT_SSRR (9 |IPOPT_CONTROL|IPOPT_COPY) |
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| 55 | #define IPOPT_RA (20|IPOPT_CONTROL|IPOPT_COPY) |
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| 56 | |||
| 57 | #define IPVERSION 4 |
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| 58 | #define MAXTTL 255 |
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| 59 | #define IPDEFTTL 64 |
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| 60 | |||
| 61 | /* struct timestamp, struct route and MAX_ROUTES are removed. |
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| 62 | |||
| 63 | REASONS: it is clear that nobody used them because: |
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| 64 | - MAX_ROUTES value was wrong. |
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| 65 | - "struct route" was wrong. |
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| 66 | - "struct timestamp" had fatally misaligned bitfields and was completely unusable. |
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| 67 | */ |
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| 68 | |||
| 69 | #define IPOPT_OPTVAL 0 |
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| 70 | #define IPOPT_OLEN 1 |
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| 71 | #define IPOPT_OFFSET 2 |
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| 72 | #define IPOPT_MINOFF 4 |
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| 73 | #define MAX_IPOPTLEN 40 |
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| 74 | #define IPOPT_NOP IPOPT_NOOP |
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| 75 | #define IPOPT_EOL IPOPT_END |
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| 76 | #define IPOPT_TS IPOPT_TIMESTAMP |
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| 77 | |||
| 78 | #define IPOPT_TS_TSONLY 0 /* timestamps only */ |
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| 79 | #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */ |
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| 80 | #define IPOPT_TS_PRESPEC 3 /* specified modules only */ |
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| 81 | |||
| 82 | struct iphdr { /* size 20/0x14 */ |
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| 83 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
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| 84 | unsigned int ihl:4, version:4; /* offset 0; version=ip version (4) */ |
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| 85 | #else |
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| 86 | unsigned int version:4, ihl:4; /* offset 0; ihl=ip header length, measured in words (5) */ |
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| 87 | #endif |
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| 88 | unsigned char tos; /* offset 1 */ |
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| 89 | unsigned short tot_len; /* offset 2; total bytes in packet in network byte order */ |
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| 90 | unsigned short id; /* offset 4 */ |
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| 91 | unsigned short frag_off; /* offset 6 */ |
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| 92 | unsigned char ttl; /* offset 8 */ |
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| 93 | unsigned char protocol; /* offset 9; 1=ICMP, 6=TCP, 17=UDP (see netinet/in.h) */ |
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| 94 | unsigned short check; /* offset 10/0xa */ |
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| 95 | unsigned int saddr; /* offset 12/0xc */ |
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| 96 | unsigned int daddr; /* offset 16/0x10 */ |
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| 97 | /*The options start here. */ |
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| 98 | }; |
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| 99 | |||
| 100 | struct ip { |
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| 101 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
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| 102 | unsigned int ip_hl:4; /* header length */ |
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| 103 | unsigned int ip_v:4; /* version */ |
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| 104 | #endif |
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| 105 | #if __BYTE_ORDER == __BIG_ENDIAN |
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| 106 | unsigned int ip_v:4; /* version */ |
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| 107 | unsigned int ip_hl:4; /* header length */ |
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| 108 | #endif |
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| 109 | unsigned char ip_tos; /* type of service */ |
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| 110 | unsigned short ip_len; /* total length */ |
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| 111 | unsigned short ip_id; /* identification */ |
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| 112 | unsigned short ip_off; /* fragment offset field */ |
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| 113 | #define IP_RF 0x8000 /* reserved fragment flag */ |
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| 114 | #define IP_DF 0x4000 /* dont fragment flag */ |
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| 115 | #define IP_MF 0x2000 /* more fragments flag */ |
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| 116 | #define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ |
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| 117 | unsigned char ip_ttl; /* time to live */ |
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| 118 | unsigned char ip_p; /* protocol */ |
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| 119 | unsigned short ip_sum; /* checksum */ |
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| 120 | struct in_addr ip_src, ip_dst; /* source and dest address */ |
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| 121 | }; |
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| 122 | |||
| 123 | __END_DECLS |
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| 124 | |||
| 125 | #endif |