xref: /csrg-svn/sys/netiso/tp_trace.c (revision 37469)

/***********************************************************
		Copyright IBM Corporation 1987

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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

******************************************************************/

/*
 * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
 */
/*
 * ARGO TP
 *
 * $Header: tp_trace.c,v 5.3 88/11/18 17:29:14 nhall Exp $
 * $Source: /usr/argo/sys/netiso/RCS/tp_trace.c,v $
 *
 * The whole protocol trace module.
 * We keep a circular buffer of trace structures, which are big
 * unions of different structures we might want to see.
 * Unfortunately this gets too big pretty easily. Pcbs were removed
 * from the tracing when the kernel got too big to boot.
 */

#ifndef lint
static char *rcsid = "$Header: tp_trace.c,v 5.3 88/11/18 17:29:14 nhall Exp $";
#endif lint

#define TP_TRACEFILE

#include "param.h"
#include "systm.h"
#include "mbuf.h"
#include "socket.h"
#include "types.h"
#include "time.h"

#include "tp_param.h"
#include "tp_timer.h"
#include "tp_stat.h"
#include "tp_param.h"
#include "tp_ip.h"
#include "tp_pcb.h"
#include "tp_tpdu.h"
#include "argo_debug.h"
#include "tp_trace.h"

#ifdef TPPT
static tp_seq = 0;
u_char tp_traceflags[128];

/*
 * The argument tpcb is the obvious.
 * event here is just the type of trace event - TPPTmisc, etc.
 * The rest of the arguments have different uses depending
 * on the type of trace event.
 */
/*ARGSUSED*/
/*VARARGS*/

void
tpTrace(tpcb, event, arg, src, len, arg4, arg5)
	struct tp_pcb	*tpcb;
	u_int 			event, arg;
	u_int	 		src;
	u_int	 		len;
	u_int	 		arg4;
	u_int	 		arg5;
{
	register struct tp_Trace *tp;

	tp = &tp_Trace[tp_Tracen++];
	tp_Tracen %= TPTRACEN;

	tp->tpt_event = event;
	tp->tpt_tseq = tp_seq++;
	tp->tpt_arg = arg;
	if(tpcb)
		tp->tpt_arg2 = tpcb->tp_lref;
	bcopy( (caddr_t)&time, (caddr_t)&tp->tpt_time, sizeof(struct timeval) );

	switch(event) {

	case TPPTertpdu:
		bcopy((caddr_t)src, (caddr_t)&tp->tpt_ertpdu,
			(unsigned)MIN((int)len, sizeof(struct tp_Trace)));
		break;

	case TPPTusrreq:
	case TPPTmisc:

		/* arg is a string */
		bcopy((caddr_t)arg, (caddr_t)tp->tpt_str,
			(unsigned)MIN(1+strlen((caddr_t) arg), TPTRACE_STRLEN));
		tp->tpt_m2 = src;
		tp->tpt_m3 = len;
		tp->tpt_m4 = arg4;
		tp->tpt_m1 = arg5;
		break;

	case TPPTgotXack:
	case TPPTXack:
	case TPPTsendack:
	case TPPTgotack:
	case TPPTack:
	case TPPTindicate:
	default:
	case TPPTdriver:
		tp->tpt_m2 = arg;
		tp->tpt_m3 = src;
		tp->tpt_m4 = len;
		tp->tpt_m5 = arg4;
		tp->tpt_m1 = arg5;
		break;
	case TPPTparam:
		bcopy((caddr_t)src, (caddr_t)&tp->tpt_param, sizeof(struct tp_param));
		break;
	case TPPTref:
		bcopy((caddr_t)src, (caddr_t)&tp->tpt_ref, sizeof(struct tp_ref));
		break;

	case TPPTtpduin:
	case TPPTtpduout:
		tp->tpt_arg2 = arg4;
		bcopy((caddr_t)src, (caddr_t)&tp->tpt_tpdu,
		      (unsigned)MIN((int)len, sizeof(struct tp_Trace)));
		break;
	}
}
#endif TPPT