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//==========================================================================

//

//      sys/netinet/tcp_debug.c

//

//     

//

//==========================================================================

//####BSDCOPYRIGHTBEGIN####

//

// -------------------------------------------

//

// Portions of this software may have been derived from OpenBSD or other sources,

// and are covered by the appropriate copyright disclaimers included herein.

//

// -------------------------------------------

//

//####BSDCOPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    gthomas

// Contributors: gthomas

// Date:         2000-01-10

// Purpose:      

// Description:  

//              

//

//####DESCRIPTIONEND####

//

//==========================================================================

/*      $OpenBSD: tcp_debug.c,v 1.6 1999/12/08 06:50:20 itojun Exp $    */

/*      $NetBSD: tcp_debug.c,v 1.10 1996/02/13 23:43:36 christos Exp $  */

/*

 * Copyright (c) 1982, 1986, 1993

 *      The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *      This product includes software developed by the University of

 *      California, Berkeley and its contributors.

 * 4. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 *      @(#)tcp_debug.c 8.1 (Berkeley) 6/10/93

 */

/*

%%% portions-copyright-nrl-95

Portions of this software are Copyright 1995-1998 by Randall Atkinson,

Ronald Lee, Daniel McDonald, Bao Phan, and Chris Winters. All Rights

Reserved. All rights under this copyright have been assigned to the US

Naval Research Laboratory (NRL). The NRL Copyright Notice and License

Agreement Version 1.1 (January 17, 1995) applies to these portions of the

software.

You should have received a copy of the license with this software. If you

didn't get a copy, you may request one from <license@ipv6.nrl.navy.mil>.

*/

#ifdef TCPDEBUG

/* load symbolic names */

#define PRUREQUESTS

#define TCPSTATES

#define TCPTIMERS

#define TANAMES

#include <sys/param.h>

#ifndef __ECOS

#include <sys/systm.h>

#endif

#include <sys/mbuf.h>

#include <sys/socket.h>

#include <sys/socketvar.h>

#include <sys/protosw.h>

#include <sys/errno.h>

#include <net/route.h>

#include <net/if.h>

#include <netinet/in.h>

#include <netinet/in_systm.h>

#include <netinet/ip.h>

#include <netinet/in_pcb.h>

#include <netinet/ip_var.h>

#include <netinet/tcp.h>

#include <netinet/tcp_fsm.h>

#include <netinet/tcp_seq.h>

#include <netinet/tcp_timer.h>

#include <netinet/tcp_var.h>

#include <netinet/tcpip.h>

#include <netinet/tcp_debug.h>

#ifdef INET6

#ifndef INET

#include <netinet/in.h>

#endif

#include <netinet6/ip6.h>

#endif /* INET6 */

#ifdef TCPDEBUG

int     tcpconsdebug = 1;

#endif

/*

 * Tcp debug routines

 */

void

tcp_trace(act, ostate, tp, headers, req, len)

        short act, ostate;

        struct tcpcb *tp;

        caddr_t headers;

        int req;

        int len;

{

#ifdef TCPDEBUG

        tcp_seq seq, ack;

        int flags;

#endif

        struct tcp_debug *td = &tcp_debug[tcp_debx++];

        struct tcpiphdr *ti = (struct tcpiphdr *)headers;

#ifdef INET6

        struct tcphdr *th;

        struct tcpipv6hdr *ti6 = (struct tcpipv6hdr *)ti;

#endif

        if (tcp_debx == TCP_NDEBUG)

                tcp_debx = 0;

        td->td_time = iptime();

        td->td_act = act;

        td->td_ostate = ostate;

        td->td_tcb = (caddr_t)tp;

        if (tp)

                td->td_cb = *tp;

        else

                bzero((caddr_t)&td->td_cb, sizeof (*tp));

#ifdef INET6

        if (tp->pf == PF_INET6) {

                if (ti) {

                        th = &ti6->ti6_t;

                        td->td_ti6 = *ti6;

                } else {

                        bzero(&td->td_ti6, sizeof(struct tcpipv6hdr));

                }

        } else {

                if (ti) {

                        th = &ti->ti_t;

                        td->td_ti = *ti;

                } else {

                        bzero(&td->td_ti, sizeof(struct tcpiphdr));

                }

        }

#else /* INET6 */

        if (ti)

                td->td_ti = *ti;

        else

                bzero((caddr_t)&td->td_ti, sizeof (*ti));

#endif /* INET6 */

        td->td_req = req;

#ifdef TCPDEBUG

        if (tcpconsdebug == 0)

                return;

        if (tp)

                printf("%x %s:", tp, tcpstates[ostate]);

        else

                printf("???????? ");

        printf("%s ", tanames[act]);

        switch (act) {

        case TA_INPUT:

        case TA_OUTPUT:

        case TA_DROP:

                if (ti == 0)

                        break;

                seq = th->th_seq;

                ack = th->th_ack;

                if (act == TA_OUTPUT) {

                        seq = ntohl(seq);

                        ack = ntohl(ack);

                }

                if (len)

                        printf("[%x..%x)", seq, seq+len);

                else

                        printf("%x", seq);

                printf("@%x, urp=%x", ack, th->th_urp);

                flags = th->th_flags;

                if (flags) {

#ifndef lint

                        char *cp = "<";

#define pf(f) { if (th->th_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } }

                        pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);

#endif

                        printf(">");

                }

                break;

        case TA_USER:

                printf("%s", prurequests[req&0xff]);

                if ((req & 0xff) == PRU_SLOWTIMO)

                        printf("<%s>", tcptimers[req>>8]);

                break;

        }

        if (tp)

                printf(" -> %s", tcpstates[tp->t_state]);

        /* print out internal state of tp !?! */

        printf("\n");

        if (tp == 0)

                return;

        printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",

            tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt,

            tp->snd_max);

        printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",

            tp->snd_wl1, tp->snd_wl2, tp->snd_wnd);

#endif /* TCPDEBUG */

}

#endif