| 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 | |