62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/*
|
|
* TUN interface functions.
|
|
* Copyright (C) 2002, 2003 Mondru AB.
|
|
* Copyright (C) 2017-2018 by Harald Welte <laforge@gnumonks.org>
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef _TUN_H
|
|
#define _TUN_H
|
|
|
|
#include <net/if.h>
|
|
|
|
#include "../lib/in46_addr.h"
|
|
|
|
#define PACKET_MAX 8196 /* Maximum packet size we receive */
|
|
#define TUN_SCRIPTSIZE 256
|
|
#define TUN_ADDRSIZE 128
|
|
|
|
#include "config.h"
|
|
#include "netdev.h"
|
|
|
|
/* ***********************************************************
|
|
* Information storage for each tun instance
|
|
*************************************************************/
|
|
|
|
struct tun_t {
|
|
int fd; /* File descriptor to tun interface */
|
|
struct in_addr addr;
|
|
struct in_addr dstaddr;
|
|
struct in_addr netmask;
|
|
int addrs; /* Number of allocated IP addresses */
|
|
int routes; /* One if we allocated an automatic route */
|
|
char devname[IFNAMSIZ]; /* Name of the tun device */
|
|
int (*cb_ind) (struct tun_t * tun, void *pack, unsigned len);
|
|
/* to be used by libgtp callers/users (to attach their own private state) */
|
|
void *priv;
|
|
};
|
|
|
|
extern int tun_new(struct tun_t **tun, const char *dev_name);
|
|
extern int tun_free(struct tun_t *tun);
|
|
extern int tun_decaps(struct tun_t *this);
|
|
extern int tun_encaps(struct tun_t *tun, void *pack, unsigned len);
|
|
|
|
extern int tun_addaddr(struct tun_t *this, struct in46_addr *addr,
|
|
struct in46_addr *dstaddr, size_t prefixlen);
|
|
|
|
extern int tun_set_cb_ind(struct tun_t *this,
|
|
int (*cb_ind) (struct tun_t * tun, void *pack,
|
|
unsigned len));
|
|
|
|
extern int tun_runscript(struct tun_t *tun, char *script);
|
|
|
|
int tun_ip_local_get(const struct tun_t *tun, struct in46_prefix *prefix_list,
|
|
size_t prefix_size, int flags);
|
|
|
|
#endif /* !_TUN_H */
|