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1 /*      $FreeBSD$       */
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
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                 bzero((void *)cbqtrace_ptr, sizeof(cbqtrace_buffer)); \
81                 cbqtrace_count = 0; \
82         } \
83 }
84
85 #define LOCK_TRACE()    splimp()
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_ */