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/*-
* Copyright (c) 2009 Internet Initiative Japan Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef L2TP_LOCAL_H
#define L2TP_LOCAL_H 1
/* $Id: l2tp_local.h,v 1.1 2010/01/11 04:20:57 yasuoka Exp $ */
#ifndef GETSHORT
#define GETSHORT(s, cp) { \
s = *(cp)++ << 8; \
s |= *(cp)++; \
}
#endif
struct l2tp_header {
#if BYTE_ORDER == LITTLE_ENDIAN
uint8_t p:1,
o:1,
x2:1,
s:1,
x1:2,
l:1,
t:1;
uint8_t ver:4,
x3:4;
#else
uint8_t t:1,
l:1,
x1:2,
s:1,
x2:1,
o:1,
p:1;
uint8_t x3:4,
ver:4;
#endif
uint16_t length;
uint16_t tunnel_id;
uint16_t session_id;
uint16_t ns;
uint16_t nr;
} __attribute__((__packed__));
#ifndef countof
#define countof(x) (sizeof((x)) / sizeof((x)[0]))
#endif
#define LISTENER_SOCK(ctrl) \
((l2tpd_listener *)slist_get(&(ctrl)->l2tpd->listener, \
(ctrl)->listener_index))->sock
#define SIN(ss) ((struct sockaddr_in *)(ss))
#endif
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