net_stats.h

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    1 /*      $NetBSD: net_stats.h,v 1.3 2008/05/04 07:22:14 thorpej 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_ */

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FreeBSD/Linux Kernel Cross Reference sys/net/net_stats.h

FreeBSD/Linux Kernel Cross Reference
sys/net/net_stats.h