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_ */ 111