1 /* $NetBSD: net_stats.h,v 1.1 2008/04/23 05:21:17 thorpej 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _NET_NET_STATS_H_ 40 #define _NET_NET_STATS_H_ 41 42 #ifdef _KERNEL 43 #include <sys/percpu.h> 44 45 #define _NET_STAT_GETREF(stat) percpu_getref((stat)) 46 #define _NET_STAT_PUTREF(stat) percpu_putref((stat)) 47 48 #define _NET_STATINC(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_STATDEC(stat, x) \ 56 do { \ 57 uint64_t *_stat_ = _NET_STAT_GETREF(stat); \ 58 _stat_[x]--; \ 59 _NET_STAT_PUTREF(stat); \ 60 } while (/*CONSTCOND*/0) 61 62 #define _NET_STATADD(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 #define _NET_STATSUB(stat, x, v) \ 70 do { \ 71 uint64_t *_stat_ = _NET_STAT_GETREF(stat); \ 72 _stat_[x] -= (v); \ 73 _NET_STAT_PUTREF(stat); \ 74 } while (/*CONSTCOND*/0) 75 76 /* 77 * netstat_sysctl_context -- 78 * Context passed to netstat_sysctl(). 79 */ 80 typedef struct { 81 percpu_t *ctx_stat; /* stat's percpu context */ 82 uint64_t *ctx_counters; /* pointer to collated counter array */ 83 u_int ctx_ncounters; /* number of counters in array */ 84 } netstat_sysctl_context; 85 86 __BEGIN_DECLS 87 struct lwp; 88 struct sysctlnode; 89 90 int netstat_sysctl(netstat_sysctl_context *, 91 const int *, u_int, void *, 92 size_t *, const void *, size_t, 93 const int *, struct lwp *, const struct sysctlnode *); 94 95 #define NETSTAT_SYSCTL(ctx) \ 96 netstat_sysctl((ctx), name, namelen, oldp, oldlenp, \ 97 newp, newlen, oname, l, rnode) 98 __END_DECLS 99 #endif /* _KERNEL */ 100 101 #endif /* !_NET_NET_STATS_H_ */ 102