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