Return to tcp.h CVS log

Up to [CSRG BSD Unix] / 42BSD / sys / netinet

Annotation of 42BSD/sys/netinet/tcp.h, revision 1.1.1.1

1.1       root        1: /*     tcp.h   6.1     83/07/29        */
                      2: 
                      3: typedef        u_long  tcp_seq;
                      4: /*
                      5:  * TCP header.
                      6:  * Per RFC 793, September, 1981.
                      7:  */
                      8: struct tcphdr {
                      9:        u_short th_sport;               /* source port */
                     10:        u_short th_dport;               /* destination port */
                     11:        tcp_seq th_seq;                 /* sequence number */
                     12:        tcp_seq th_ack;                 /* acknowledgement number */
                     13: #ifdef vax
                     14:        u_char  th_x2:4,                /* (unused) */
                     15:                th_off:4;               /* data offset */
                     16: #endif
                     17:        u_char  th_flags;
                     18: #define        TH_FIN  0x01
                     19: #define        TH_SYN  0x02
                     20: #define        TH_RST  0x04
                     21: #define        TH_PUSH 0x08
                     22: #define        TH_ACK  0x10
                     23: #define        TH_URG  0x20
                     24:        u_short th_win;                 /* window */
                     25:        u_short th_sum;                 /* checksum */
                     26:        u_short th_urp;                 /* urgent pointer */
                     27: };
                     28: 
                     29: #define        TCPOPT_EOL      0
                     30: #define        TCPOPT_NOP      1
                     31: #define        TCPOPT_MAXSEG   2

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.