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udp_private.h revision 1.1 
      1 /*	$NetBSD: udp_private.h,v 1.1 2008/04/12 05:58:22 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 _NETINET_UDP_PRIVATE_H_
     40 #define _NETINET_UDP_PRIVATE_H_
     41 
     42 #ifdef _KERNEL
     43 #include <sys/percpu.h>
     44 
     45 extern	percpu_t *udpstat_percpu;
     46 
     47 /*
     48  * Most UDP statistics are exceptional conditions, so this is good enough.
     49  */
     50 #define	UDP_STATINC(x)							\
     51 do {									\
     52 	uint64_t *_udps_ = percpu_getref(udpstat_percpu);		\
     53 	_udps_[x]++;							\
     54 	percpu_putref(udpstat_percpu);					\
     55 } while (/*CONSTCOND*/0)
     56 
     57 #ifdef __NO_STRICT_ALIGNMENT
     58 #define	UDP_HDR_ALIGNED_P(uh)	1
     59 #else
     60 #define	UDP_HDR_ALIGNED_P(uh)	((((vaddr_t) (uh)) & 3) == 0)
     61 #endif
     62 #endif /* _KERNEL */
     63 
     64 #endif /* !_NETINET_UDP_PRIVATE_H_ */
     65