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 38typedef 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) \ 44do { \ 45 uint64_t *_stat_ = (r); \ 46 _stat_[x]++; \ 47} while (/*CONSTCOND*/0) 48 49#define _NET_STATINC(stat, x) \ 50do { \ 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) \ 57do { \ 58 uint64_t *_stat_ = (r); \ 59 _stat_[x]--; \ 60} while (/*CONSTCOND*/0) 61 62#define _NET_STATDEC(stat, x) \ 63do { \ 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) \ 70do { \ 71 uint64_t *_stat_ = (r); \ 72 _stat_[x] += (v); \ 73} while (/*CONSTCOND*/0) 74 75#define _NET_STATADD(stat, x, v) \ 76do { \ 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) \ 83do { \ 84 uint64_t *_stat_ = (r); \ 85 _stat_[x] -= (v); \ 86} while (/*CONSTCOND*/0) 87 88#define _NET_STATSUB(stat, x, v) \ 89do { \ 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 96struct lwp; 97struct sysctlnode; 98 99int 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_ */ 111