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1 /*
2  * Copyright (c) 2004-2008 Voltaire, Inc. All rights reserved.
3  * Copyright (c) 2002-2005 Mellanox Technologies LTD. All rights reserved.
4  * Copyright (c) 1996-2003 Intel Corporation. All rights reserved.
5  *
6  * This software is available to you under a choice of one of two
7  * licenses.  You may choose to be licensed under the terms of the GNU
8  * General Public License (GPL) Version 2, available from the file
9  * COPYING in the main directory of this source tree, or the
10  * OpenIB.org BSD license below:
11  *
12  *     Redistribution and use in source and binary forms, with or
13  *     without modification, are permitted provided that the following
14  *     conditions are met:
15  *
16  *      - Redistributions of source code must retain the above
17  *        copyright notice, this list of conditions and the following
18  *        disclaimer.
19  *
20  *      - Redistributions in binary form must reproduce the above
21  *        copyright notice, this list of conditions and the following
22  *        disclaimer in the documentation and/or other materials
23  *        provided with the distribution.
24  *
25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32  * SOFTWARE.
33  *
34  */
35
36 /*
37  * Abstract:
38  *      Declaration of osm_stats_t.
39  *      This object represents the OpenSM statistics object.
40  *      This object is part of the OpenSM family of objects.
41  */
42
43 #ifndef _OSM_STATS_H_
44 #define _OSM_STATS_H_
45
46 #ifdef HAVE_LIBPTHREAD
47 #include <pthread.h>
48 #else
49 #include <complib/cl_event.h>
50 #endif
51 #include <complib/cl_atomic.h>
52 #include <opensm/osm_base.h>
53
54 #ifdef __cplusplus
55 #  define BEGIN_C_DECLS extern "C" {
56 #  define END_C_DECLS   }
57 #else                           /* !__cplusplus */
58 #  define BEGIN_C_DECLS
59 #  define END_C_DECLS
60 #endif                          /* __cplusplus */
61
62 BEGIN_C_DECLS
63 /****h* OpenSM/Statistics
64 * NAME
65 *       OpenSM
66 *
67 * DESCRIPTION
68 *       The OpenSM object encapsulates the information needed by the
69 *       OpenSM to track interesting traffic and internal statistics.
70 *
71 * AUTHOR
72 *       Steve King, Intel
73 *
74 *********/
75 /****s* OpenSM: Statistics/osm_stats_t
76 * NAME
77 *       osm_stats_t
78 *
79 * DESCRIPTION
80 *       OpenSM statistics block.
81 *
82 * SYNOPSIS
83 */
84 typedef struct osm_stats {
85         atomic32_t qp0_mads_outstanding;
86         atomic32_t qp0_mads_outstanding_on_wire;
87         atomic32_t qp0_mads_rcvd;
88         atomic32_t qp0_mads_sent;
89         atomic32_t qp0_unicasts_sent;
90         atomic32_t qp0_mads_rcvd_unknown;
91         atomic32_t sa_mads_outstanding;
92         atomic32_t sa_mads_rcvd;
93         atomic32_t sa_mads_sent;
94         atomic32_t sa_mads_rcvd_unknown;
95         atomic32_t sa_mads_ignored;
96 #ifdef HAVE_LIBPTHREAD
97         pthread_mutex_t mutex;
98         pthread_cond_t cond;
99 #else
100         cl_event_t event;
101 #endif
102 } osm_stats_t;
103 /*
104 * FIELDS
105 *       qp0_mads_outstanding
106 *               Contains the number of MADs outstanding on QP0.
107 *               When this value reaches zero, OpenSM has discovered all
108 *               nodes on the subnet, and finished retrieving attributes.
109 *               At that time, subnet configuration may begin.
110 *               This variable must be manipulated using atomic instructions.
111 *
112 *       qp0_mads_outstanding_on_wire
113 *               The number of MADs outstanding on the wire at any moment.
114 *
115 *       qp0_mads_rcvd
116 *               Total number of QP0 MADs received.
117 *
118 *       qp0_mads_sent
119 *               Total number of QP0 MADs sent.
120 *
121 *       qp0_unicasts_sent
122 *               Total number of response-less MADs sent on the wire.  This count
123 *               includes getresp(), send() and trap() methods.
124 *
125 *       qp0_mads_rcvd_unknown
126 *               Total number of unknown QP0 MADs received. This includes
127 *               unrecognized attribute IDs and methods.
128 *
129 *       sa_mads_outstanding
130 *               Contains the number of SA MADs outstanding on QP1.
131 *
132 *       sa_mads_rcvd
133 *               Total number of SA MADs received.
134 *
135 *       sa_mads_sent
136 *               Total number of SA MADs sent.
137 *
138 *       sa_mads_rcvd_unknown
139 *               Total number of unknown SA MADs received. This includes
140 *               unrecognized attribute IDs and methods.
141 *
142 *       sa_mads_ignored
143 *               Total number of SA MADs received because SM is not
144 *               master or SM is in first time sweep.
145 *
146 * SEE ALSO
147 ***************/
148
149 static inline uint32_t osm_stats_inc_qp0_outstanding(osm_stats_t *stats)
150 {
151         uint32_t outstanding;
152
153 #ifdef HAVE_LIBPTHREAD
154         pthread_mutex_lock(&stats->mutex);
155         outstanding = ++stats->qp0_mads_outstanding;
156         pthread_mutex_unlock(&stats->mutex);
157 #else
158         outstanding = cl_atomic_inc(&stats->qp0_mads_outstanding);
159 #endif
160
161         return outstanding;
162 }
163
164 static inline uint32_t osm_stats_dec_qp0_outstanding(osm_stats_t *stats)
165 {
166         uint32_t outstanding;
167
168 #ifdef HAVE_LIBPTHREAD
169         pthread_mutex_lock(&stats->mutex);
170         outstanding = --stats->qp0_mads_outstanding;
171         if (!outstanding)
172                 pthread_cond_signal(&stats->cond);
173         pthread_mutex_unlock(&stats->mutex);
174 #else
175         outstanding = cl_atomic_dec(&stats->qp0_mads_outstanding);
176         if (!outstanding)
177                 cl_event_signal(&stats->event);
178 #endif
179
180         return outstanding;
181 }
182
183 END_C_DECLS
184 #endif                          /* _OSM_STATS_H_ */