1/*	$NetBSD: altq_rmclass_debug.h,v 1.7 2006/10/12 19:59:08 peter Exp $	*/
  2/*	$KAME: altq_rmclass_debug.h,v 1.3 2002/11/29 04:36:24 kjc Exp $	*/
  3
  4/*
  5 * Copyright (c) Sun Microsystems, Inc. 1998 All rights reserved.
  6 *
  7 * Redistribution and use in source and binary forms, with or without
  8 * modification, are permitted provided that the following conditions
  9 * are met:
 10 *
 11 * 1. Redistributions of source code must retain the above copyright
 12 *    notice, this list of conditions and the following disclaimer.
 13 *
 14 * 2. Redistributions in binary form must reproduce the above copyright
 15 *    notice, this list of conditions and the following disclaimer in the
 16 *    documentation and/or other materials provided with the distribution.
 17 *
 18 * 3. All advertising materials mentioning features or use of this software
 19 *    must display the following acknowledgement:
 20 *      This product includes software developed by the SMCC Technology
 21 *      Development Group at Sun Microsystems, Inc.
 22 *
 23 * 4. The name of the Sun Microsystems, Inc nor may not be used to endorse or
 24 *      promote products derived from this software without specific prior
 25 *      written permission.
 26 *
 27 * SUN MICROSYSTEMS DOES NOT CLAIM MERCHANTABILITY OF THIS SOFTWARE OR THE
 28 * SUITABILITY OF THIS SOFTWARE FOR ANY PARTICULAR PURPOSE.  The software is
 29 * provided "as is" without express or implied warranty of any kind.
 30 *
 31 * These notices must be retained in any copies of any part of this software.
 32 */
 33
 34#ifndef _ALTQ_ALTQ_RMCLASS_DEBUG_H_
 35#define	_ALTQ_ALTQ_RMCLASS_DEBUG_H_
 36
 37/* #pragma ident	"@(#)rm_class_debug.h	1.7	98/05/04 SMI" */
 38
 39/*
 40 * Cbq debugging macros
 41 */
 42
 43#ifdef __cplusplus
 44extern "C" {
 45#endif
 46
 47#ifdef	CBQ_TRACE
 48#ifndef NCBQTRACE
 49#define	NCBQTRACE (16 * 1024)
 50#endif
 51
 52/*
 53 * To view the trace output, using adb, type:
 54 *	adb -k /dev/ksyms /dev/mem <cr>, then type
 55 *	cbqtrace_count/D to get the count, then type
 56 *	cbqtrace_buffer,0tcount/Dp4C" "Xn
 57 *	This will dump the trace buffer from 0 to count.
 58 */
 59/*
 60 * in ALTQ, "call cbqtrace_dump(N)" from DDB to display 20 events
 61 * from Nth event in the circular buffer.
 62 */
 63
 64struct cbqtrace {
 65	int count;
 66	int function;		/* address of function */
 67	int trace_action;	/* descriptive 4 characters */
 68	int object;		/* object operated on */
 69};
 70
 71extern struct cbqtrace cbqtrace_buffer[];
 72extern struct cbqtrace *cbqtrace_ptr;
 73extern int cbqtrace_count;
 74
 75#define	CBQTRACEINIT() {				\
 76	if (cbqtrace_ptr == NULL)		\
 77		cbqtrace_ptr = cbqtrace_buffer; \
 78	else { \
 79		cbqtrace_ptr = cbqtrace_buffer; \
 80		(void)memset(cbqtrace_ptr, 0, sizeof(cbqtrace_buffer)); \
 81		cbqtrace_count = 0; \
 82	} \
 83}
 84
 85#define	LOCK_TRACE()	splnet()
 86#define	UNLOCK_TRACE(x)	splx(x)
 87
 88#define	CBQTRACE(func, act, obj) {		\
 89	int __s = LOCK_TRACE();			\
 90	int *_p = &cbqtrace_ptr->count;	\
 91	*_p++ = ++cbqtrace_count;		\
 92	*_p++ = (int)(func);			\
 93	*_p++ = (int)(act);			\
 94	*_p++ = (int)(obj);			\
 95	if ((struct cbqtrace *)(void *)_p >= &cbqtrace_buffer[NCBQTRACE])\
 96		cbqtrace_ptr = cbqtrace_buffer; \
 97	else					\
 98		cbqtrace_ptr = (struct cbqtrace *)(void *)_p; \
 99	UNLOCK_TRACE(__s);			\
100	}
101#else
102
103/* If no tracing, define no-ops */
104#define	CBQTRACEINIT()
105#define	CBQTRACE(a, b, c)
106
107#endif	/* !CBQ_TRACE */
108
109#ifdef __cplusplus
110}
111#endif
112
113#endif	/* _ALTQ_ALTQ_RMCLASS_DEBUG_H_ */