/* $NetBSD: altq_rmclass_debug.h,v 1.7 2006/10/12 19:59:08 peter Exp $ */

/* $NetBSD: altq_rmclass_debug.h,v 1.7 2006/10/12 19:59:08 peter Exp $ */
/* $KAME: altq_rmclass_debug.h,v 1.3 2002/11/29 04:36:24 kjc Exp $ */

/*
* Copyright (c) Sun Microsystems, Inc. 1998 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 SMCC Technology
* Development Group at Sun Microsystems, Inc.
*
* 4. The name of the Sun Microsystems, Inc nor may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* SUN MICROSYSTEMS DOES NOT CLAIM MERCHANTABILITY OF THIS SOFTWARE OR THE
* SUITABILITY OF THIS SOFTWARE FOR ANY PARTICULAR PURPOSE. The software is
* provided "as is" without express or implied warranty of any kind.
*
* These notices must be retained in any copies of any part of this software.
*/

#ifndef _ALTQ_ALTQ_RMCLASS_DEBUG_H_
#define _ALTQ_ALTQ_RMCLASS_DEBUG_H_

/* #pragma ident "@(#)rm_class_debug.h 1.7 98/05/04 SMI" */

/*
* Cbq debugging macros
*/

#ifdef __cplusplus
extern "C" {
#endif

#ifdef CBQ_TRACE
#ifndef NCBQTRACE
#define NCBQTRACE (16 * 1024)
#endif

/*
* To view the trace output, using adb, type:
* adb -k /dev/ksyms /dev/mem <cr>, then type
* cbqtrace_count/D to get the count, then type
* cbqtrace_buffer,0tcount/Dp4C" "Xn
* This will dump the trace buffer from 0 to count.
*/
/*
* in ALTQ, "call cbqtrace_dump(N)" from DDB to display 20 events
* from Nth event in the circular buffer.
*/

struct cbqtrace {
int count;
int function; /* address of function */
int trace_action; /* descriptive 4 characters */
int object; /* object operated on */
};

extern struct cbqtrace cbqtrace_buffer[];
extern struct cbqtrace *cbqtrace_ptr;
extern int cbqtrace_count;

#define CBQTRACEINIT() { \
if (cbqtrace_ptr == NULL) \
cbqtrace_ptr = cbqtrace_buffer; \
else { \
cbqtrace_ptr = cbqtrace_buffer; \
(void)memset(cbqtrace_ptr, 0, sizeof(cbqtrace_buffer)); \
cbqtrace_count = 0; \
} \
}

#define LOCK_TRACE() splnet()
#define UNLOCK_TRACE(x) splx(x)

#define CBQTRACE(func, act, obj) { \
int __s = LOCK_TRACE(); \
int *_p = &cbqtrace_ptr->count; \
*_p++ = ++cbqtrace_count; \
*_p++ = (int)(func); \
*_p++ = (int)(act); \
*_p++ = (int)(obj); \
if ((struct cbqtrace *)(void *)_p >= &cbqtrace_buffer[NCBQTRACE])\
cbqtrace_ptr = cbqtrace_buffer; \
else \
cbqtrace_ptr = (struct cbqtrace *)(void *)_p; \
UNLOCK_TRACE(__s); \
}
#else

/* If no tracing, define no-ops */
#define CBQTRACEINIT()
#define CBQTRACE(a, b, c)

#endif /* !CBQ_TRACE */

#ifdef __cplusplus
}
#endif

#endif /* _ALTQ_ALTQ_RMCLASS_DEBUG_H_ */