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Annotation of 42BSD/sys/netinet/tcp_seq.h, revision 1.1

1.1     ! root        1: /*     tcp_seq.h       6.1     83/07/29        */
        !             2: 
        !             3: /*
        !             4:  * TCP sequence numbers are 32 bit integers operated
        !             5:  * on with modular arithmetic.  These macros can be
        !             6:  * used to compare such integers.
        !             7:  */
        !             8: #define        SEQ_LT(a,b)     ((int)((a)-(b)) < 0)
        !             9: #define        SEQ_LEQ(a,b)    ((int)((a)-(b)) <= 0)
        !            10: #define        SEQ_GT(a,b)     ((int)((a)-(b)) > 0)
        !            11: #define        SEQ_GEQ(a,b)    ((int)((a)-(b)) >= 0)
        !            12: 
        !            13: /*
        !            14:  * Macros to initialize tcp sequence numbers for
        !            15:  * send and receive from initial send and receive
        !            16:  * sequence numbers.
        !            17:  */
        !            18: #define        tcp_rcvseqinit(tp) \
        !            19:        (tp)->rcv_nxt = (tp)->irs + 1
        !            20: 
        !            21: #define        tcp_sendseqinit(tp) \
        !            22:        (tp)->snd_una = (tp)->snd_nxt = (tp)->snd_max = (tp)->snd_up = \
        !            23:            (tp)->iss
        !            24: 
        !            25: #define        TCP_ISSINCR     128             /* increment for tcp_iss each second */
        !            26: 
        !            27: #ifdef KERNEL
        !            28: tcp_seq        tcp_iss;                /* tcp initial send seq # */
        !            29: #endif

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