usr/src/sys/netinet/tcp_debug.h

/*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)tcp_debug.h 7.4 (Berkeley) %G%
 */

struct  tcp_debug {
        n_time  td_time;
        short   td_act;
        short   td_ostate;
        caddr_t td_tcb;
        struct  tcpiphdr td_ti;
        short   td_req;
        struct  tcpcb td_cb;
};

#define TA_INPUT        0
#define TA_OUTPUT       1
#define TA_USER         2
#define TA_RESPOND      3
#define TA_DROP         4

#ifdef TANAMES
char    *tanames[] =
    { "input", "output", "user", "respond", "drop" };
#endif

#define TCP_NDEBUG 100
struct  tcp_debug tcp_debug[TCP_NDEBUG];
int     tcp_debx;