2 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 #include <sys/param.h>
31 #include <sys/socket.h> /* For IFF_ defines */
32 #include <net/if.h> /* For IFF_ defines */
34 #include <netinet/in.h>
35 #include <net/if_types.h>
36 #include <net/if_tun.h>
37 #include <netinet/in_systm.h>
38 #include <netinet/ip.h>
43 #if defined(__OpenBSD__) || defined(__NetBSD__)
44 #include <sys/ioctl.h>
60 #include "throughput.h"
62 #include "slcompress.h"
65 #include "descriptor.h"
77 tun_configure(struct bundle *bundle, int mtu)
83 s = socket(AF_INET, SOCK_DGRAM, 0);
86 log_Printf(LogERROR, "tun_configure: socket(): %s\n", strerror(errno));
90 sprintf(ifr.ifr_name, "tun%d", bundle->unit);
92 if (ioctl(s, SIOCSIFMTU, &ifr) < 0)
93 log_Printf(LogERROR, "tun_configure: ioctl(SIOCSIFMTU): %s\n",
100 memset(&info, '\0', sizeof info);
104 info.baudrate = bundle->bandwidth;
106 info.flags = IFF_UP|IFF_POINTOPOINT;
108 if (ioctl(bundle->dev.fd, TUNSIFINFO, &info) < 0)
109 log_Printf(LogERROR, "tun_configure: ioctl(TUNSIFINFO): %s\n",