usr/src/common/net/dhcp/v4_sum_impl.h

   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
  41 extern "C" {
  42 #endif
  43
  44 #define BIT_WRAP                (uint_t)0x10000 /* checksum wrap */
  45
  46 extern uint16_t ipv4cksum(uint16_t *, uint16_t);
  47 extern 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 */