1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright (c) 1999-2001 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27#ifndef	_V4_SUM_IMPL_H
28#define	_V4_SUM_IMPL_H
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#include <sys/types.h>
33#include <netinet/in.h>
34#include <netinet/udp.h>
35
36/*
37 * Common functions for various IP/UDP module checksum implementations.
38 */
39
40#ifdef	__cplusplus
41extern "C" {
42#endif
43
44#define	BIT_WRAP		(uint_t)0x10000	/* checksum wrap */
45
46extern uint16_t ipv4cksum(uint16_t *, uint16_t);
47extern uint16_t udp_chksum(struct udphdr *, const struct in_addr *,
48    const struct in_addr *, uint8_t);
49
50#ifdef	__cplusplus
51}
52#endif
53
54#endif	/* _V4_SUM_IMPL_H */
55