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) \ |
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_ */ |
85 | |