iptun.h revision 2b24ab6b3865caeede9eeb9db6b83e1d89dcd1ea
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _INET_IPTUN_H
#define _INET_IPTUN_H
#ifdef __cplusplus
extern "C" {
#endif
/*
*/
#define IPTUN_DEFAULT_HOPLIMIT 64
/* from RFC 2473 */
#define IPTUN_DEFAULT_ENCAPLIMIT 4
typedef enum {
IPTUN_TYPE_UNKNOWN = 0,
} iptun_type_t;
/*
* To maintain proper alignment of fields between 32bit user-land and 64bit
* kernel, all fields in iptun_kparams_t after itk_fields must be in
* descending order of size. Due to strict structure size checks done in the
* iptun ioctl processing, the structure size must be the same on 32 and 64
* bit. amd64 will pad the end of the structure to make the end 64bit
* aligned, so we must add explicit padding to make sure that it's similarly
* aligned when compiled in 32 bit mode.
*/
typedef struct iptun_kparams {
/* itk_flags */
#ifdef __cplusplus
}
#endif
#endif /* _INET_IPTUN_H */