2002-04-18 04:59:20 +04:00
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/////////////////////////////////////////////////////////////////////////
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2011-02-25 01:05:47 +03:00
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// $Id$
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2002-04-18 04:59:20 +04:00
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/////////////////////////////////////////////////////////////////////////
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//
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2011-01-24 23:35:51 +03:00
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// Copyright (C) 2001-2011 The Bochs Project
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2002-04-18 04:59:20 +04:00
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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2009-02-08 12:05:52 +03:00
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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2008-02-16 01:05:43 +03:00
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//
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/////////////////////////////////////////////////////////////////////////
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2002-04-18 04:59:20 +04:00
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// eth_tuntap.cc - TUN/TAP interface by Renzo Davoli <renzo@cs.unibo.it>
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2002-11-20 22:06:23 +03:00
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// Define BX_PLUGGABLE in files that can be compiled into plugins. For
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2008-01-27 01:24:03 +03:00
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// platforms that require a special tag on exported symbols, BX_PLUGGABLE
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2002-11-20 22:06:23 +03:00
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// is used to know when we are exporting symbols and when we are importing.
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#define BX_PLUGGABLE
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2008-01-27 01:24:03 +03:00
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2004-06-19 19:20:15 +04:00
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#include "iodev.h"
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2011-08-16 21:27:27 +04:00
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#include "netmod.h"
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2005-12-10 21:37:35 +03:00
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2011-02-26 23:33:28 +03:00
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#if BX_NETWORKING && BX_NETMOD_TUNTAP
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2002-11-19 08:47:45 +03:00
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2009-04-13 17:33:11 +04:00
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#define LOG_THIS netdev->
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2002-04-18 04:59:20 +04:00
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#include <signal.h>
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#include <sys/param.h>
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#include <sys/ioctl.h>
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2006-08-05 19:53:52 +04:00
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#ifndef __APPLE__
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2002-04-18 04:59:20 +04:00
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#include <sys/poll.h>
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2006-08-05 19:53:52 +04:00
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#endif
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2002-04-18 04:59:20 +04:00
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#include <sys/time.h>
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#include <sys/resource.h>
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2004-01-17 05:13:37 +03:00
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#ifdef __linux__
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2002-04-18 04:59:20 +04:00
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#include <asm/types.h>
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2004-01-17 05:13:37 +03:00
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#else
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#include <sys/types.h>
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#endif
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2002-04-18 04:59:20 +04:00
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <sys/wait.h>
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2004-01-17 05:13:37 +03:00
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#ifdef __linux__
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2002-04-18 04:59:20 +04:00
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#include <linux/netlink.h>
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#include <linux/if.h>
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2002-04-30 17:33:30 +04:00
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#include <linux/if_tun.h>
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2004-01-17 05:13:37 +03:00
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#else
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#include <net/if.h>
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2006-11-23 20:21:59 +03:00
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#if !defined(__APPLE__) && !defined(__OpenBSD__) && !defined(__NetBSD__)
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2004-01-17 05:13:37 +03:00
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#include <net/if_tap.h>
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#endif
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2004-01-17 14:47:12 +03:00
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#endif
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2002-04-18 04:59:20 +04:00
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#include <assert.h>
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#include <fcntl.h>
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#include <errno.h>
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2002-04-30 17:33:30 +04:00
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#define BX_ETH_TUNTAP_LOGGING 0
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2002-04-18 04:59:20 +04:00
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int tun_alloc(char *dev);
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//
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// Define the class. This is private to this module
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//
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class bx_tuntap_pktmover_c : public eth_pktmover_c {
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public:
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bx_tuntap_pktmover_c(const char *netif, const char *macaddr,
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2011-12-17 12:22:33 +04:00
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eth_rx_handler_t rxh, eth_rx_status_t rxstat,
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2009-04-13 17:33:11 +04:00
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bx_devmodel_c *dev, const char *script);
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2002-04-18 04:59:20 +04:00
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void sendpkt(void *buf, unsigned io_len);
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private:
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int fd;
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int rx_timer_index;
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static void rx_timer_handler(void *);
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void rx_timer ();
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2005-04-24 15:06:49 +04:00
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Bit8u guest_macaddr[6];
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2004-09-18 16:35:13 +04:00
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#if BX_ETH_TUNTAP_LOGGING
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2002-04-18 04:59:20 +04:00
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FILE *txlog, *txlog_txt, *rxlog, *rxlog_txt;
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2004-09-18 16:35:13 +04:00
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#endif
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2002-04-18 04:59:20 +04:00
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};
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//
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// Define the static class that registers the derived pktmover class,
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// and allocates one on request.
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//
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2002-04-30 17:33:30 +04:00
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class bx_tuntap_locator_c : public eth_locator_c {
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2002-04-18 04:59:20 +04:00
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public:
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2002-04-30 17:33:30 +04:00
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bx_tuntap_locator_c(void) : eth_locator_c("tuntap") {}
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2002-04-18 04:59:20 +04:00
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protected:
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eth_pktmover_c *allocate(const char *netif, const char *macaddr,
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2011-12-17 12:22:33 +04:00
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eth_rx_handler_t rxh, eth_rx_status_t rxstat,
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2009-04-13 17:33:11 +04:00
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bx_devmodel_c *dev, const char *script) {
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2011-12-17 12:22:33 +04:00
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return (new bx_tuntap_pktmover_c(netif, macaddr, rxh, rxstat, dev, script));
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2002-04-18 04:59:20 +04:00
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}
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2002-04-30 17:33:30 +04:00
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} bx_tuntap_match;
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2002-04-18 04:59:20 +04:00
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//
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2002-04-30 17:33:30 +04:00
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// Define the methods for the bx_tuntap_pktmover derived class
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2002-04-18 04:59:20 +04:00
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//
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// the constructor
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2008-01-27 01:24:03 +03:00
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bx_tuntap_pktmover_c::bx_tuntap_pktmover_c(const char *netif,
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2009-04-13 17:33:11 +04:00
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const char *macaddr,
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eth_rx_handler_t rxh,
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2011-12-17 12:22:33 +04:00
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eth_rx_status_t rxstat,
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2009-04-13 17:33:11 +04:00
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bx_devmodel_c *dev,
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const char *script)
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2002-04-18 04:59:20 +04:00
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{
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int flags;
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2004-01-17 05:13:37 +03:00
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2009-04-13 17:33:11 +04:00
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this->netdev = dev;
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2004-01-17 05:13:37 +03:00
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#ifdef NEVERDEF
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2002-04-30 17:33:30 +04:00
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if (strncmp (netif, "tun", 3) != 0) {
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2009-04-13 17:33:11 +04:00
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BX_PANIC(("eth_tuntap: interface name (%s) must be tun", netif));
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2002-04-18 04:59:20 +04:00
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}
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2003-02-16 22:35:57 +03:00
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char filename[BX_PATHNAME_LEN];
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2009-04-13 17:33:11 +04:00
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sprintf(filename, "/dev/net/%s", netif);
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2002-04-18 04:59:20 +04:00
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2002-04-30 17:33:30 +04:00
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// check if the TUN/TAP devices is running, and turn on ARP. This is based
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2002-04-18 04:59:20 +04:00
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// on code from the Mac-On-Linux project. http://http://www.maconlinux.org/
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2008-02-16 01:05:43 +03:00
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int sock = socket(AF_INET, SOCK_DGRAM, 0);
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2002-04-18 04:59:20 +04:00
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if (sock < 0) {
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2009-04-13 17:33:11 +04:00
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BX_PANIC(("socket creation: %s", strerror(errno)));
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2002-04-18 04:59:20 +04:00
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return;
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}
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struct ifreq ifr;
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2008-02-16 01:05:43 +03:00
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memset(&ifr, 0, sizeof(ifr));
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strncpy(ifr.ifr_name, netif, sizeof(ifr.ifr_name));
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if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
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2009-04-13 17:33:11 +04:00
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BX_PANIC(("SIOCGIFFLAGS on %s: %s", netif, strerror (errno)));
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2002-04-18 04:59:20 +04:00
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close(sock);
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return;
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}
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2008-02-16 01:05:43 +03:00
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if (!(ifr.ifr_flags & IFF_RUNNING)) {
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2009-04-13 17:33:11 +04:00
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BX_PANIC(("%s device is not running", netif));
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2002-04-18 04:59:20 +04:00
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close(sock);
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return;
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}
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2008-02-16 01:05:43 +03:00
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if ((ifr.ifr_flags & IFF_NOARP)) {
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2009-04-13 17:33:11 +04:00
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BX_INFO(("turn on ARP for %s device", netif));
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2002-04-18 04:59:20 +04:00
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ifr.ifr_flags &= ~IFF_NOARP;
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2008-02-16 01:05:43 +03:00
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if (ioctl(sock, SIOCSIFFLAGS, &ifr) < 0) {
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2009-04-13 17:33:11 +04:00
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BX_PANIC(("SIOCSIFFLAGS: %s", strerror(errno)));
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2002-04-18 04:59:20 +04:00
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close(sock);
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return;
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}
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}
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close(sock);
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fd = open (filename, O_RDWR);
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2008-01-27 01:24:03 +03:00
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#endif
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2002-04-18 04:59:20 +04:00
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char intname[IFNAMSIZ];
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strcpy(intname,netif);
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fd=tun_alloc(intname);
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if (fd < 0) {
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2008-02-16 01:05:43 +03:00
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BX_PANIC(("open failed on %s: %s", netif, strerror (errno)));
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2002-04-18 04:59:20 +04:00
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return;
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}
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/* set O_ASYNC flag so that we can poll with read() */
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2008-02-16 01:05:43 +03:00
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if ((flags = fcntl(fd, F_GETFL)) < 0) {
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2009-04-13 17:33:11 +04:00
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BX_PANIC(("getflags on tun device: %s", strerror (errno)));
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2002-04-18 04:59:20 +04:00
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}
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flags |= O_NONBLOCK;
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2008-02-16 01:05:43 +03:00
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if (fcntl(fd, F_SETFL, flags) < 0) {
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BX_PANIC(("set tun device flags: %s", strerror (errno)));
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2002-04-18 04:59:20 +04:00
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}
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2009-04-13 17:33:11 +04:00
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BX_INFO(("tuntap network driver: opened %s device", netif));
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2002-04-18 04:59:20 +04:00
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2002-05-02 11:54:22 +04:00
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/* Execute the configuration script */
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2008-02-16 01:05:43 +03:00
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if((script != NULL) && (strcmp(script, "") != 0) && (strcmp(script, "none") != 0))
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{
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2009-04-13 17:33:11 +04:00
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if (execute_script(this->netdev, script, intname) < 0)
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BX_ERROR(("execute script '%s' on %s failed", script, intname));
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2008-02-16 01:05:43 +03:00
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}
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2002-05-02 11:54:22 +04:00
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2008-01-27 01:24:03 +03:00
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// Start the rx poll
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this->rx_timer_index =
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2002-04-18 04:59:20 +04:00
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bx_pc_system.register_timer(this, this->rx_timer_handler, 1000,
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2009-04-13 17:33:11 +04:00
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1, 1, "eth_tuntap"); // continuous, active
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2011-12-17 12:22:33 +04:00
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this->rxh = rxh;
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this->rxstat = rxstat;
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2005-04-24 15:06:49 +04:00
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memcpy(&guest_macaddr[0], macaddr, 6);
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2002-04-30 17:33:30 +04:00
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#if BX_ETH_TUNTAP_LOGGING
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2002-04-18 04:59:20 +04:00
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// eventually Bryce wants txlog to dump in pcap format so that
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// tcpdump -r FILE can read it and interpret packets.
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2009-04-13 17:33:11 +04:00
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txlog = fopen("ne2k-tx.log", "wb");
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if (!txlog) BX_PANIC(("open ne2k-tx.log failed"));
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txlog_txt = fopen("ne2k-txdump.txt", "wb");
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if (!txlog_txt) BX_PANIC(("open ne2k-txdump.txt failed"));
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fprintf(txlog_txt, "tuntap packetmover readable log file\n");
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fprintf(txlog_txt, "net IF = %s\n", netif);
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fprintf(txlog_txt, "MAC address = ");
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2008-01-27 01:24:03 +03:00
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for (int i=0; i<6; i++)
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2009-04-13 17:33:11 +04:00
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fprintf(txlog_txt, "%02x%s", 0xff & macaddr[i], i<5?":" : "");
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fprintf(txlog_txt, "\n--\n");
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fflush(txlog_txt);
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rxlog = fopen("ne2k-rx.log", "wb");
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if (!rxlog) BX_PANIC(("open ne2k-rx.log failed"));
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rxlog_txt = fopen("ne2k-rxdump.txt", "wb");
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if (!rxlog_txt) BX_PANIC(("open ne2k-rxdump.txt failed"));
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fprintf(rxlog_txt, "tuntap packetmover readable log file\n");
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fprintf(rxlog_txt, "net IF = %s\n", netif);
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fprintf(rxlog_txt, "MAC address = ");
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2008-01-27 01:24:03 +03:00
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for (int i=0; i<6; i++)
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2009-04-13 17:33:11 +04:00
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fprintf(rxlog_txt, "%02x%s", 0xff & macaddr[i], i<5?":" : "");
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fprintf(rxlog_txt, "\n--\n");
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fflush(rxlog_txt);
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2002-04-18 04:59:20 +04:00
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#endif
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}
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2008-02-16 01:05:43 +03:00
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void bx_tuntap_pktmover_c::sendpkt(void *buf, unsigned io_len)
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2002-04-18 04:59:20 +04:00
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{
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2009-04-13 17:33:11 +04:00
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#ifdef __APPLE__ //FIXME
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2005-07-24 11:25:02 +04:00
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unsigned int size = write (fd, (char*)buf+14, io_len-14);
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2004-01-18 09:15:38 +03:00
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if (size != io_len-14) {
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2009-04-13 17:33:11 +04:00
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BX_PANIC(("write on tuntap device: %s", strerror (errno)));
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2004-01-18 09:15:38 +03:00
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} else {
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2009-04-13 17:33:11 +04:00
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BX_DEBUG(("wrote %d bytes on tuntap - 14 bytes Ethernet header", io_len));
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2004-01-18 09:15:38 +03:00
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}
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#elif NEVERDEF
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2004-10-07 21:38:03 +04:00
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Bit8u txbuf[BX_PACKET_BUFSIZE];
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2002-04-18 04:59:20 +04:00
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txbuf[0] = 0;
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txbuf[1] = 0;
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memcpy (txbuf+2, buf, io_len);
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unsigned int size = write (fd, txbuf, io_len+2);
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if (size != io_len+2) {
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2009-04-13 17:33:11 +04:00
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BX_PANIC(("write on tuntap device: %s", strerror (errno)));
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2002-04-18 04:59:20 +04:00
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} else {
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2009-04-13 17:33:11 +04:00
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BX_DEBUG(("wrote %d bytes + 2 byte pad on tuntap", io_len));
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2002-04-18 04:59:20 +04:00
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}
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2004-01-18 09:15:38 +03:00
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#else
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2002-04-18 04:59:20 +04:00
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unsigned int size = write (fd, buf, io_len);
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if (size != io_len) {
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2009-04-13 17:33:11 +04:00
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BX_PANIC(("write on tuntap device: %s", strerror (errno)));
|
2002-04-18 04:59:20 +04:00
|
|
|
} else {
|
2009-04-13 17:33:11 +04:00
|
|
|
BX_DEBUG(("wrote %d bytes on tuntap", io_len));
|
2002-04-18 04:59:20 +04:00
|
|
|
}
|
2004-01-18 09:15:38 +03:00
|
|
|
#endif
|
2002-04-30 17:33:30 +04:00
|
|
|
#if BX_ETH_TUNTAP_LOGGING
|
2009-04-13 17:33:11 +04:00
|
|
|
BX_DEBUG(("sendpkt length %u", io_len));
|
2002-04-18 04:59:20 +04:00
|
|
|
// dump raw bytes to a file, eventually dump in pcap format so that
|
|
|
|
// tcpdump -r FILE can interpret them for us.
|
2009-04-13 17:33:11 +04:00
|
|
|
int n = fwrite(buf, io_len, 1, txlog);
|
2009-04-19 21:25:40 +04:00
|
|
|
if (n != 1) BX_ERROR(("fwrite to txlog failed"));
|
2002-04-18 04:59:20 +04:00
|
|
|
// dump packet in hex into an ascii log file
|
2009-04-19 21:25:40 +04:00
|
|
|
write_pktlog_txt(txlog_txt, (const Bit8u *)buf, io_len, 0);
|
2002-04-18 04:59:20 +04:00
|
|
|
// flush log so that we see the packets as they arrive w/o buffering
|
2009-04-13 17:33:11 +04:00
|
|
|
fflush(txlog);
|
2002-04-18 04:59:20 +04:00
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
void bx_tuntap_pktmover_c::rx_timer_handler (void *this_ptr)
|
|
|
|
{
|
|
|
|
bx_tuntap_pktmover_c *class_ptr = (bx_tuntap_pktmover_c *) this_ptr;
|
|
|
|
class_ptr->rx_timer();
|
|
|
|
}
|
|
|
|
|
2009-04-13 17:33:11 +04:00
|
|
|
void bx_tuntap_pktmover_c::rx_timer()
|
2002-04-18 04:59:20 +04:00
|
|
|
{
|
|
|
|
int nbytes;
|
2004-10-07 21:38:03 +04:00
|
|
|
Bit8u buf[BX_PACKET_BUFSIZE];
|
2002-04-18 04:59:20 +04:00
|
|
|
Bit8u *rxbuf;
|
|
|
|
if (fd<0) return;
|
|
|
|
|
2009-04-13 17:33:11 +04:00
|
|
|
#ifdef __APPLE__ //FIXME:hack
|
2004-01-18 09:15:38 +03:00
|
|
|
nbytes = 14;
|
|
|
|
bzero(buf, nbytes);
|
|
|
|
buf[0] = buf[6] = 0xFE;
|
|
|
|
buf[1] = buf[7] = 0xFD;
|
|
|
|
buf[12] = 8;
|
|
|
|
nbytes += read (fd, buf+nbytes, sizeof(buf)-nbytes);
|
|
|
|
rxbuf=buf;
|
|
|
|
#elif NEVERDEF
|
|
|
|
nbytes = read (fd, buf, sizeof(buf));
|
2002-04-18 04:59:20 +04:00
|
|
|
// hack: discard first two bytes
|
|
|
|
rxbuf = buf+2;
|
|
|
|
nbytes-=2;
|
|
|
|
#else
|
2004-01-18 09:15:38 +03:00
|
|
|
nbytes = read (fd, buf, sizeof(buf));
|
2002-04-18 04:59:20 +04:00
|
|
|
rxbuf=buf;
|
|
|
|
#endif
|
|
|
|
|
2002-04-30 17:33:30 +04:00
|
|
|
// hack: TUN/TAP device likes to create an ethernet header which has
|
2002-04-18 04:59:20 +04:00
|
|
|
// the same source and destination address FE:FD:00:00:00:00.
|
|
|
|
// Change the dest address to FE:FD:00:00:00:01.
|
2005-04-24 15:06:49 +04:00
|
|
|
if (!memcmp(&rxbuf[0], &rxbuf[6], 6)) {
|
|
|
|
rxbuf[5] = guest_macaddr[5];
|
2004-09-18 16:35:13 +04:00
|
|
|
}
|
2002-04-18 04:59:20 +04:00
|
|
|
|
2009-04-13 17:33:11 +04:00
|
|
|
#ifdef __APPLE__ //FIXME:hack
|
2004-01-18 09:15:38 +03:00
|
|
|
if (nbytes>14)
|
|
|
|
#else
|
2002-04-18 04:59:20 +04:00
|
|
|
if (nbytes>0)
|
2004-01-18 09:15:38 +03:00
|
|
|
#endif
|
2009-04-13 17:33:11 +04:00
|
|
|
BX_DEBUG(("tuntap read returned %d bytes", nbytes));
|
|
|
|
#ifdef __APPLE__ //FIXME:hack
|
2004-01-18 09:15:38 +03:00
|
|
|
if (nbytes<14) {
|
|
|
|
#else
|
2002-04-18 04:59:20 +04:00
|
|
|
if (nbytes<0) {
|
2004-01-18 09:15:38 +03:00
|
|
|
#endif
|
2002-04-18 04:59:20 +04:00
|
|
|
if (errno != EAGAIN)
|
2009-04-13 17:33:11 +04:00
|
|
|
BX_ERROR(("tuntap read error: %s", strerror(errno)));
|
2002-04-18 04:59:20 +04:00
|
|
|
return;
|
|
|
|
}
|
2002-04-30 17:33:30 +04:00
|
|
|
#if BX_ETH_TUNTAP_LOGGING
|
2002-04-18 04:59:20 +04:00
|
|
|
if (nbytes > 0) {
|
2009-04-13 17:33:11 +04:00
|
|
|
BX_DEBUG(("receive packet length %u", nbytes));
|
2002-04-18 04:59:20 +04:00
|
|
|
// dump raw bytes to a file, eventually dump in pcap format so that
|
|
|
|
// tcpdump -r FILE can interpret them for us.
|
2009-04-13 17:33:11 +04:00
|
|
|
int n = fwrite(rxbuf, nbytes, 1, rxlog);
|
2009-04-19 21:25:40 +04:00
|
|
|
if (n != 1) BX_ERROR (("fwrite to rxlog failed"));
|
2002-04-18 04:59:20 +04:00
|
|
|
// dump packet in hex into an ascii log file
|
2009-04-19 21:25:40 +04:00
|
|
|
write_pktlog_txt(rxlog_txt, rxbuf, nbytes, 1);
|
2002-04-18 04:59:20 +04:00
|
|
|
// flush log so that we see the packets as they arrive w/o buffering
|
2009-04-13 17:33:11 +04:00
|
|
|
fflush(rxlog);
|
2002-04-18 04:59:20 +04:00
|
|
|
}
|
|
|
|
#endif
|
2005-05-21 11:38:29 +04:00
|
|
|
BX_DEBUG(("eth_tuntap: got packet: %d bytes, dst=%02x:%02x:%02x:%02x:%02x:%02x, src=%02x:%02x:%02x:%02x:%02x:%02x", nbytes, rxbuf[0], rxbuf[1], rxbuf[2], rxbuf[3], rxbuf[4], rxbuf[5], rxbuf[6], rxbuf[7], rxbuf[8], rxbuf[9], rxbuf[10], rxbuf[11]));
|
2002-04-18 04:59:20 +04:00
|
|
|
if (nbytes < 60) {
|
2009-04-13 17:33:11 +04:00
|
|
|
BX_INFO(("packet too short (%d), padding to 60", nbytes));
|
2002-04-18 04:59:20 +04:00
|
|
|
nbytes = 60;
|
|
|
|
}
|
2011-12-18 13:12:38 +04:00
|
|
|
if (this->rxstat(this->netdev) & BX_NETDEV_RXREADY) {
|
|
|
|
this->rxh(this->netdev, rxbuf, nbytes);
|
|
|
|
} else {
|
|
|
|
BX_ERROR(("device not ready to receive data"));
|
|
|
|
}
|
2002-04-18 04:59:20 +04:00
|
|
|
}
|
|
|
|
|
2004-09-26 19:38:24 +04:00
|
|
|
int tun_alloc(char *dev)
|
|
|
|
{
|
|
|
|
struct ifreq ifr;
|
2006-04-26 02:52:38 +04:00
|
|
|
char *ifname;
|
2004-09-26 19:38:24 +04:00
|
|
|
int fd, err;
|
2002-04-18 04:59:20 +04:00
|
|
|
|
2006-04-26 02:52:38 +04:00
|
|
|
// split name into device:ifname if applicable, to allow for opening
|
|
|
|
// persistent tuntap devices
|
|
|
|
for (ifname = dev; *ifname; ifname++) {
|
2008-02-16 01:05:43 +03:00
|
|
|
if (*ifname == ':') {
|
|
|
|
*(ifname++) = '\0';
|
|
|
|
break;
|
|
|
|
}
|
2006-04-26 02:52:38 +04:00
|
|
|
}
|
2004-09-26 19:38:24 +04:00
|
|
|
if ((fd = open(dev, O_RDWR)) < 0)
|
|
|
|
return -1;
|
2004-01-17 05:13:37 +03:00
|
|
|
#ifdef __linux__
|
2004-09-26 19:38:24 +04:00
|
|
|
memset(&ifr, 0, sizeof(ifr));
|
|
|
|
|
2008-01-27 01:24:03 +03:00
|
|
|
/* Flags: IFF_TUN - TUN device (no Ethernet headers)
|
|
|
|
* IFF_TAP - TAP device
|
2004-09-26 19:38:24 +04:00
|
|
|
*
|
2008-01-27 01:24:03 +03:00
|
|
|
* IFF_NO_PI - Do not provide packet information
|
|
|
|
*/
|
|
|
|
ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
|
2006-04-26 02:52:38 +04:00
|
|
|
strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
|
2004-09-26 19:38:24 +04:00
|
|
|
if ((err = ioctl(fd, TUNSETIFF, (void *) &ifr)) < 0) {
|
|
|
|
close(fd);
|
|
|
|
return err;
|
|
|
|
}
|
2005-05-21 11:38:29 +04:00
|
|
|
strncpy(dev, ifr.ifr_name, IFNAMSIZ);
|
|
|
|
dev[IFNAMSIZ-1]=0;
|
2004-09-26 19:38:24 +04:00
|
|
|
|
2008-02-16 01:05:43 +03:00
|
|
|
ioctl(fd, TUNSETNOCSUM, 1);
|
2004-01-17 05:13:37 +03:00
|
|
|
#endif
|
2002-04-18 04:59:20 +04:00
|
|
|
|
2004-09-26 19:38:24 +04:00
|
|
|
return fd;
|
2008-01-27 01:24:03 +03:00
|
|
|
}
|
2002-04-18 04:59:20 +04:00
|
|
|
|
2011-02-26 23:33:28 +03:00
|
|
|
#endif /* if BX_NETWORKING && BX_NETMOD_TUNTAP */
|