| 0,0 → 1,125 |
|---|
| #ifndef _NETINET_IP_H |
| #define _NETINET_IP_H |
| |
| #include <inttypes.h> |
| #include <endian.h> |
| #include <netinet/in.h> |
| |
| __BEGIN_DECLS |
| |
| #define IPVERSION 4 /* IP version number */ |
| #define IP_MAXPACKET 65535 /* maximum packet size */ |
| |
| #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_LOWCOST IPTOS_MINCOST |
| |
| #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_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 |
| |
| /* struct timestamp, struct route and MAX_ROUTES are removed. |
| |
| REASONS: it is clear that nobody used them because: |
| - MAX_ROUTES value was wrong. |
| - "struct route" was wrong. |
| - "struct timestamp" had fatally misaligned bitfields and was completely unusable. |
| */ |
| |
| #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 iphdr { /* size 20/0x14 */ |
| #if __BYTE_ORDER == __LITTLE_ENDIAN |
| unsigned int ihl:4, version:4; /* offset 0; version=ip version (4) */ |
| #else |
| unsigned int version:4, ihl:4; /* offset 0; ihl=ip header length, measured in words (5) */ |
| #endif |
| unsigned char tos; /* offset 1 */ |
| unsigned short tot_len; /* offset 2; total bytes in packet in network byte order */ |
| unsigned short id; /* offset 4 */ |
| unsigned short frag_off; /* offset 6 */ |
| unsigned char ttl; /* offset 8 */ |
| unsigned char protocol; /* offset 9; 1=ICMP, 6=TCP, 17=UDP (see netinet/in.h) */ |
| unsigned short check; /* offset 10/0xa */ |
| unsigned int saddr; /* offset 12/0xc */ |
| unsigned int daddr; /* offset 16/0x10 */ |
| /*The options start here. */ |
| }; |
| |
| struct ip { |
| #if __BYTE_ORDER == __LITTLE_ENDIAN |
| unsigned int ip_hl:4; /* header length */ |
| unsigned int ip_v:4; /* version */ |
| #endif |
| #if __BYTE_ORDER == __BIG_ENDIAN |
| unsigned int ip_v:4; /* version */ |
| unsigned int ip_hl:4; /* header length */ |
| #endif |
| unsigned char ip_tos; /* type of service */ |
| unsigned short ip_len; /* total length */ |
| unsigned short ip_id; /* identification */ |
| unsigned short ip_off; /* fragment offset field */ |
| #define IP_RF 0x8000 /* reserved fragment flag */ |
| #define IP_DF 0x4000 /* dont fragment flag */ |
| #define IP_MF 0x2000 /* more fragments flag */ |
| #define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ |
| unsigned char ip_ttl; /* time to live */ |
| unsigned char ip_p; /* protocol */ |
| unsigned short ip_sum; /* checksum */ |
| struct in_addr ip_src, ip_dst; /* source and dest address */ |
| }; |
| |
| __END_DECLS |
| |
| #endif |