FreeBSD/Linux Kernel Cross Reference
sys/net/net_stats.h
1 /* $NetBSD: net_stats.h,v 1.5 2020/01/29 03:04:55 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2008, 2020 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 typedef void *net_stat_ref_t;
39
40 #define _NET_STAT_GETREF(stat) ((net_stat_ref_t)percpu_getref((stat)))
41 #define _NET_STAT_PUTREF(stat) percpu_putref((stat))
42
43 #define _NET_STATINC_REF(r, x) \
44 do { \
45 uint64_t *_stat_ = (r); \
46 _stat_[x]++; \
47 } while (/*CONSTCOND*/0)
48
49 #define _NET_STATINC(stat, x) \
50 do { \
51 net_stat_ref_t _nsr_ = _NET_STAT_GETREF(stat); \
52 _NET_STATINC_REF(_nsr_, x); \
53 _NET_STAT_PUTREF(stat); \
54 } while (/*CONSTCOND*/0)
55
56 #define _NET_STATDEC_REF(r, x) \
57 do { \
58 uint64_t *_stat_ = (r); \
59 _stat_[x]--; \
60 } while (/*CONSTCOND*/0)
61
62 #define _NET_STATDEC(stat, x) \
63 do { \
64 net_stat_ref_t _nsr_ = _NET_STAT_GETREF(stat); \
65 _NET_STATDEC_REF(_nsr_, x); \
66 _NET_STAT_PUTREF(stat); \
67 } while (/*CONSTCOND*/0)
68
69 #define _NET_STATADD_REF(r, x, v) \
70 do { \
71 uint64_t *_stat_ = (r); \
72 _stat_[x] += (v); \
73 } while (/*CONSTCOND*/0)
74
75 #define _NET_STATADD(stat, x, v) \
76 do { \
77 net_stat_ref_t _nsr_ = _NET_STAT_GETREF(stat); \
78 _NET_STATADD_REF(_nsr_, x, v); \
79 _NET_STAT_PUTREF(stat); \
80 } while (/*CONSTCOND*/0)
81
82 #define _NET_STATSUB_REF(r, x, v) \
83 do { \
84 uint64_t *_stat_ = (r); \
85 _stat_[x] -= (v); \
86 } while (/*CONSTCOND*/0)
87
88 #define _NET_STATSUB(stat, x, v) \
89 do { \
90 net_stat_ref_t _nsr_ = _NET_STAT_GETREF(stat); \
91 _NET_STATSUB_REF(_nsr_, x, v); \
92 _NET_STAT_PUTREF(stat); \
93 } while (/*CONSTCOND*/0)
94
95 __BEGIN_DECLS
96 struct lwp;
97 struct sysctlnode;
98
99 int netstat_sysctl(percpu_t *, u_int,
100 const int *, u_int, void *,
101 size_t *, const void *, size_t,
102 const int *, struct lwp *, const struct sysctlnode *);
103
104 #define NETSTAT_SYSCTL(stat, nctrs) \
105 netstat_sysctl((stat), (nctrs), name, namelen, oldp, oldlenp, \
106 newp, newlen, oname, l, rnode)
107 __END_DECLS
108 #endif /* _KERNEL */
109
110 #endif /* !_NET_NET_STATS_H_ */
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