tun.c revision 31921 
1/*-
2 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$Id$
27 */
28
29#include <sys/param.h>
30#include <sys/time.h>
31#include <sys/select.h>
32#include <sys/socket.h>
33#include <netinet/in.h>
34#include <net/if.h>
35#ifdef __FreeBSD__
36#include <net/if_var.h>
37#endif
38#include <net/if_tun.h>
39
40#include <stdio.h>
41#include <string.h>
42#include <sys/ioctl.h>
43#include <sys/errno.h>
44
45#include "command.h"
46#include "mbuf.h"
47#include "log.h"
48#include "hdlc.h"
49#include "defs.h"
50#include "loadalias.h"
51#include "vars.h"
52#include "tun.h"
53
54void
55tun_configure(int mtu, int speed)
56{
57  struct tuninfo info;
58
59  info.type = 23;
60  info.mtu = mtu;
61  if (VarPrefMTU != 0 && VarPrefMTU < mtu)
62    info.mtu = VarPrefMTU;
63  info.baudrate = speed;
64#ifdef __OpenBSD__
65  info.flags = IFF_UP|IFF_POINTOPOINT;
66#endif
67  if (ioctl(tun_out, TUNSIFINFO, &info) < 0)
68    LogPrintf(LogERROR, "tun_configure: ioctl(TUNSIFINFO): %s\n",
69	      strerror(errno));
70}
71