1*8d7e7a98SRuslan Bukin /*- 2*8d7e7a98SRuslan Bukin * Copyright (c) 1990 The Regents of the University of California. 3*8d7e7a98SRuslan Bukin * All rights reserved. 4*8d7e7a98SRuslan Bukin * 5*8d7e7a98SRuslan Bukin * Redistribution and use in source and binary forms, with or without 6*8d7e7a98SRuslan Bukin * modification, are permitted provided that the following conditions 7*8d7e7a98SRuslan Bukin * are met: 8*8d7e7a98SRuslan Bukin * 1. Redistributions of source code must retain the above copyright 9*8d7e7a98SRuslan Bukin * notice, this list of conditions and the following disclaimer. 10*8d7e7a98SRuslan Bukin * 2. Redistributions in binary form must reproduce the above copyright 11*8d7e7a98SRuslan Bukin * notice, this list of conditions and the following disclaimer in the 12*8d7e7a98SRuslan Bukin * documentation and/or other materials provided with the distribution. 13*8d7e7a98SRuslan Bukin * 3. Neither the name of the University nor the names of its contributors 14*8d7e7a98SRuslan Bukin * may be used to endorse or promote products derived from this software 15*8d7e7a98SRuslan Bukin * without specific prior written permission. 16*8d7e7a98SRuslan Bukin * 17*8d7e7a98SRuslan Bukin * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18*8d7e7a98SRuslan Bukin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19*8d7e7a98SRuslan Bukin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20*8d7e7a98SRuslan Bukin * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21*8d7e7a98SRuslan Bukin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22*8d7e7a98SRuslan Bukin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23*8d7e7a98SRuslan Bukin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24*8d7e7a98SRuslan Bukin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25*8d7e7a98SRuslan Bukin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26*8d7e7a98SRuslan Bukin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27*8d7e7a98SRuslan Bukin * SUCH DAMAGE. 28*8d7e7a98SRuslan Bukin * 29*8d7e7a98SRuslan Bukin * from tahoe: in_cksum.c 1.2 86/01/05 30*8d7e7a98SRuslan Bukin * from: @(#)in_cksum.c 1.3 (Berkeley) 1/19/91 31*8d7e7a98SRuslan Bukin * from: Id: in_cksum.c,v 1.8 1995/12/03 18:35:19 bde Exp 32*8d7e7a98SRuslan Bukin * $FreeBSD$ 33*8d7e7a98SRuslan Bukin */ 34*8d7e7a98SRuslan Bukin 35*8d7e7a98SRuslan Bukin #ifndef _MACHINE_IN_CKSUM_H_ 36*8d7e7a98SRuslan Bukin #define _MACHINE_IN_CKSUM_H_ 1 37*8d7e7a98SRuslan Bukin 38*8d7e7a98SRuslan Bukin #include <sys/cdefs.h> 39*8d7e7a98SRuslan Bukin 40*8d7e7a98SRuslan Bukin #ifdef _KERNEL 41*8d7e7a98SRuslan Bukin #define in_cksum(m, len) in_cksum_skip(m, len, 0) 42*8d7e7a98SRuslan Bukin u_short in_addword(u_short sum, u_short b); 43*8d7e7a98SRuslan Bukin u_short in_cksum_skip(struct mbuf *m, int len, int skip); 44*8d7e7a98SRuslan Bukin u_int do_cksum(const void *, int); 45*8d7e7a98SRuslan Bukin #if defined(IPVERSION) && (IPVERSION == 4) 46*8d7e7a98SRuslan Bukin u_int in_cksum_hdr(const struct ip *); 47*8d7e7a98SRuslan Bukin #endif 48*8d7e7a98SRuslan Bukin 49*8d7e7a98SRuslan Bukin u_short in_pseudo(u_int sum, u_int b, u_int c); 50*8d7e7a98SRuslan Bukin 51*8d7e7a98SRuslan Bukin #endif /* _KERNEL */ 52*8d7e7a98SRuslan Bukin #endif /* _MACHINE_IN_CKSUM_H_ */ 53