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File: [cvs.NetBSD.org] / src / sys / net / net_stats.h (download)

Revision 1.4, Fri Sep 5 06:01:24 2014 UTC (9 years, 7 months ago) by matt
Branch: MAIN
CVS Tags: tls-maxphys-base-20171202, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20191119, phil-wifi-20190609, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, nick-nhusb-base-20170825, nick-nhusb-base-20170204, nick-nhusb-base-20161204, nick-nhusb-base-20161004, nick-nhusb-base-20160907, nick-nhusb-base-20160529, nick-nhusb-base-20160422, nick-nhusb-base-20160319, nick-nhusb-base-20151226, nick-nhusb-base-20150921, nick-nhusb-base-20150606, nick-nhusb-base-20150406, nick-nhusb-base, nick-nhusb, netbsd-9-base, netbsd-9-3-RELEASE, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, matt-nb8-mediatek-base, matt-nb8-mediatek, localcount-20160914, jdolecek-ncq-base, jdolecek-ncq, isaki-audio2-base, isaki-audio2, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, ad-namecache-base2, ad-namecache-base1, ad-namecache-base
Branch point for: phil-wifi, ad-namecache
Changes since 1.3: +2 -2 lines 

Cast return value of _NET_STAT_GETREF

/*	$NetBSD: net_stats.h,v 1.4 2014/09/05 06:01:24 matt Exp $	*/

/*-
 * Copyright (c) 2008 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _NET_NET_STATS_H_
#define _NET_NET_STATS_H_

#ifdef _KERNEL
#include <sys/percpu.h>

#define	_NET_STAT_GETREF(stat)	((uint64_t *)percpu_getref((stat)))
#define	_NET_STAT_PUTREF(stat)	percpu_putref((stat))

#define	_NET_STATINC(stat, x)						\
do {									\
	uint64_t *_stat_ = _NET_STAT_GETREF(stat);			\
	_stat_[x]++;							\
	_NET_STAT_PUTREF(stat);						\
} while (/*CONSTCOND*/0)

#define	_NET_STATDEC(stat, x)						\
do {									\
	uint64_t *_stat_ = _NET_STAT_GETREF(stat);			\
	_stat_[x]--;							\
	_NET_STAT_PUTREF(stat);						\
} while (/*CONSTCOND*/0)

#define	_NET_STATADD(stat, x, v)					\
do {									\
	uint64_t *_stat_ = _NET_STAT_GETREF(stat);			\
	_stat_[x] += (v);						\
	_NET_STAT_PUTREF(stat);						\
} while (/*CONSTCOND*/0)

#define	_NET_STATSUB(stat, x, v)					\
do {									\
	uint64_t *_stat_ = _NET_STAT_GETREF(stat);			\
	_stat_[x] -= (v);						\
	_NET_STAT_PUTREF(stat);						\
} while (/*CONSTCOND*/0)

__BEGIN_DECLS
struct lwp;
struct sysctlnode;

int	netstat_sysctl(percpu_t *, u_int,
		       const int *, u_int, void *,
		       size_t *, const void *, size_t,
		       const int *, struct lwp *, const struct sysctlnode *);

#define	NETSTAT_SYSCTL(stat, nctrs)					\
	netstat_sysctl((stat), (nctrs), name, namelen, oldp, oldlenp,	\
		       newp, newlen, oname, l, rnode)
__END_DECLS
#endif /* _KERNEL */

#endif /* !_NET_NET_STATS_H_ */