altq_rmclass_debug.h

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    1 /*      $NetBSD: altq_rmclass_debug.h,v 1.4 2003/11/09 22:11:12 christos Exp $  */
    2 /*      $KAME: altq_rmclass_debug.h,v 1.2 2000/02/22 14:00:35 itojun 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
   44 extern "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 
   64 struct 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 
   71 extern struct cbqtrace cbqtrace_buffer[];
   72 extern struct cbqtrace *cbqtrace_ptr;
   73 extern 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_ */

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FreeBSD/Linux Kernel Cross Reference sys/altq/altq_rmclass_debug.h

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sys/altq/altq_rmclass_debug.h