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