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/*
* OpenGGSN - Gateway GPRS Support Node
* Copyright (C) 2002 Mondru AB.
*
* The contents of this file may be used under the terms of the GNU
* General Public License Version 2, provided that the above copyright
* notice and this permission notice is included in all copies or
* substantial portions of the software.
*
* The initial developer of the original code is
* Jens Jakobsen <jj@openggsn.org>
*
* Contributor(s):
*
*/
#ifndef _TUN_H
#define _TUN_H
#define hton8(x) (x)
#define ntoh8(x) (x)
#define hton16(x) htons(x)
#define ntoh16(x) ntohs(x)
#define hton32(x) htonl(x)
#define ntoh32(x) ntohl(x)
#define PACKET_MAX 8196 /* TODO */
/* ***********************************************************
* Information storage for each tun instance
*************************************************************/
struct tun_t {
int fd; /* File descriptor to network interface */
struct in_addr addr; /* IP address of tun interface */
char devname[IFNAMSIZ];/* Name of the tun device */
};
extern int tun_newtun(struct tun_t **tun);
extern int tun_freetun(struct tun_t *tun);
extern int tun_decaps(struct tun_t *tun,
int (*cb) (void *cl, struct tun_t*, void *pack, unsigned len),
void *cl);
extern int tun_encaps(struct tun_t *tun, void *pack, unsigned len);
#endif /* !_TUN_H */
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