sys/net/net_stats.h

   1 /*      $NetBSD: net_stats.h,v 1.2 2008/04/28 20:24:09 martin Exp $     */
   2
   3 /*-
   4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _NET_NET_STATS_H_
  33 #define _NET_NET_STATS_H_
  34
  35 #ifdef _KERNEL
  36 #include <sys/percpu.h>
  37
  38 #define _NET_STAT_GETREF(stat)  percpu_getref((stat))
  39 #define _NET_STAT_PUTREF(stat)  percpu_putref((stat))
  40
  41 #define _NET_STATINC(stat, x)                                           \
  42 do {                                                                    \
  43         uint64_t *_stat_ = _NET_STAT_GETREF(stat);                      \
  44         _stat_[x]++;                                                    \
  45         _NET_STAT_PUTREF(stat);                                         \
  46 } while (/*CONSTCOND*/0)
  47
  48 #define _NET_STATDEC(stat, x)                                           \
  49 do {                                                                    \
  50         uint64_t *_stat_ = _NET_STAT_GETREF(stat);                      \
  51         _stat_[x]--;                                                    \
  52         _NET_STAT_PUTREF(stat);                                         \
  53 } while (/*CONSTCOND*/0)
  54
  55 #define _NET_STATADD(stat, x, v)                                        \
  56 do {                                                                    \
  57         uint64_t *_stat_ = _NET_STAT_GETREF(stat);                      \
  58         _stat_[x] += (v);                                               \
  59         _NET_STAT_PUTREF(stat);                                         \
  60 } while (/*CONSTCOND*/0)
  61
  62 #define _NET_STATSUB(stat, x, v)                                        \
  63 do {                                                                    \
  64         uint64_t *_stat_ = _NET_STAT_GETREF(stat);                      \
  65         _stat_[x] -= (v);                                               \
  66         _NET_STAT_PUTREF(stat);                                         \
  67 } while (/*CONSTCOND*/0)
  68
  69 __BEGIN_DECLS
  70 struct lwp;
  71 struct sysctlnode;
  72
  73 int     netstat_sysctl(percpu_t *, u_int,
  74                        const int *, u_int, void *,
  75                        size_t *, const void *, size_t,
  76                        const int *, struct lwp *, const struct sysctlnode *);
  77
  78 #define NETSTAT_SYSCTL(stat, nctrs)                                     \
  79         netstat_sysctl((stat), (nctrs), name, namelen, oldp, oldlenp,   \
  80                        newp, newlen, oname, l, rnode)
  81 __END_DECLS
  82 #endif /* _KERNEL */
  83
  84 #endif /* !_NET_NET_STATS_H_ */