From 623c7ee0308aede8eada552d6ae33710ae24d176 Mon Sep 17 00:00:00 2001 From: Guus Sliepen Date: Fri, 12 Oct 2001 15:22:59 +0000 Subject: [PATCH] Added FreeBSD tap device handling. --- src/freebsd/device.c | 111 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 src/freebsd/device.c diff --git a/src/freebsd/device.c b/src/freebsd/device.c new file mode 100644 index 00000000..b11bab93 --- /dev/null +++ b/src/freebsd/device.c @@ -0,0 +1,111 @@ +/* + device.c -- Interaction with FreeBSD tap device + Copyright (C) 2001 Ivo Timmermans , + 2001 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + $Id: device.c,v 1.1.2.1 2001/10/12 15:22:59 guus Exp $ +*/ + +#define DEFAULT_DEVICE "/dev/tap0" + +int device_fd = -1; +int device_type; +char *device_fname; +char *device_info; + +int device_total_in = 0; +int device_total_out = 0; + +* + open the local ethertap device +*/ +int setup_device(void) +{ + struct ifreq ifr; + +cp + if(!get_config_string(lookup_config(config_tree, "Device"), &device_fname))) + device_fname = DEFAULT_DEVICE; + +cp + if((device_fd = open(device_fname, O_RDWR | O_NONBLOCK)) < 0) + { + syslog(LOG_ERR, _("Could not open %s: %m"), device_fname); + return -1; + } +cp + device_fd = device_fd; + + /* Set default MAC address for ethertap devices */ + + mymac.type = SUBNET_MAC; + mymac.net.mac.address.x[0] = 0xfe; + mymac.net.mac.address.x[1] = 0xfd; + mymac.net.mac.address.x[2] = 0x00; + mymac.net.mac.address.x[3] = 0x00; + mymac.net.mac.address.x[4] = 0x00; + mymac.net.mac.address.x[5] = 0x00; + + device_info = _("FreeBSD tap device"); + + syslog(LOG_INFO, _("%s is a %s"), device_fname, device_info); +cp + return 0; +} + +/* + read, encrypt and send data that is + available through the ethertap device +*/ +int read_packet(vpn_packet_t *packet) +{ + int lenin; +cp + if((lenin = read(device_fd, packet->data, MTU)) <= 0) + { + syslog(LOG_ERR, _("Error while reading from %s %s: %m"), device_info, device_fname); + return -1; + } + + packet->len = lenin; + + device_total_in += packet->len; + + if(debug_lvl >= DEBUG_TRAFFIC) + syslog(LOG_DEBUG, _("Read packet of %d bytes from %s"), + packet->len, device_info); + + return 0; +cp +} + +int write_packet(vpn_packet_t *packet) +{ +cp + if(debug_lvl >= DEBUG_TRAFFIC) + syslog(LOG_DEBUG, _("Writing packet of %d bytes to %s"), + packet->len, device_info); + + if(write(device_fd, packet->data, packet->len) < 0) + { + syslog(LOG_ERR, _("Error while writing to %s %s: %m"), device_info, device_fname); + return -1; + } + + device_total_out += packet->len; +cp +} -- 2.39.5