1/* $NetBSD: net_stats.h,v 1.4 2014/09/05 06:01:24 matt 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) ((uint64_t *)percpu_getref((stat)))
39#define _NET_STAT_PUTREF(stat) percpu_putref((stat))
40
41#define _NET_STATINC(stat, x) \
42do { \
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) \
49do { \
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) \
56do { \
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) \
63do { \
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
70struct lwp;
71struct sysctlnode;
72
73int 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_ */
85