2 device.c -- Interaction with Solaris tun device
3 Copyright (C) 2001-2003 Ivo Timmermans <ivo@o2w.nl>,
4 2001-2003 Guus Sliepen <guus@sliepen.eu.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 $Id: device.c,v 1.1.2.14 2003/07/12 17:41:48 guus Exp $
28 #include <sys/types.h>
31 #include <sys/socket.h>
35 #include <sys/ioctl.h>
36 #include <sys/stropts.h>
37 #include <sys/sockio.h>
38 #include <net/if_tun.h>
40 #define DEFAULT_DEVICE "/dev/tun"
52 char *interface = NULL;
53 char ifrname[IFNAMSIZ];
54 char *device_info = NULL;
56 int device_total_in = 0;
57 int device_total_out = 0;
59 int setup_device(void)
61 int ip_fd = -1, if_fd = -1;
67 if(!get_config_string(lookup_config(config_tree, "Device"), &device))
68 device = DEFAULT_DEVICE;
70 if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
71 logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
78 while(*ptr && !isdigit((int) *ptr))
82 if((ip_fd = open("/dev/ip", O_RDWR, 0)) < 0) {
83 logger(LOG_ERR, _("Could not open /dev/ip: %s"), strerror(errno));
87 /* Assign a new PPA and get its unit number. */
88 if((ppa = ioctl(device_fd, TUNNEWPPA, ppa)) < 0) {
89 logger(LOG_ERR, _("Can't assign new interface: %s"), strerror(errno));
93 if((if_fd = open(device, O_RDWR, 0)) < 0) {
94 logger(LOG_ERR, _("Could not open %s twice: %s"), device,
99 if(ioctl(if_fd, I_PUSH, "ip") < 0) {
100 logger(LOG_ERR, _("Can't push IP module: %s"), strerror(errno));
104 /* Assign ppa according to the unit number returned by tun device */
105 if(ioctl(if_fd, IF_UNITSEL, (char *) &ppa) < 0) {
106 logger(LOG_ERR, _("Can't set PPA %d: %s"), ppa, strerror(errno));
110 if(ioctl(ip_fd, I_LINK, if_fd) < 0) {
111 logger(LOG_ERR, _("Can't link TUN device to IP: %s"), strerror(errno));
115 if(!get_config_string(lookup_config(config_tree, "Interface"), &interface))
116 asprintf(&interface, "tun%d", ppa);
118 device_info = _("Solaris tun device");
120 logger(LOG_INFO, _("%s is a %s"), device, device_info);
125 void close_device(void)
132 int read_packet(vpn_packet_t *packet)
138 if((lenin = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
139 logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
140 device, strerror(errno));
144 packet->data[12] = 0x08;
145 packet->data[13] = 0x00;
147 packet->len = lenin + 14;
149 device_total_in += packet->len;
151 ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
157 int write_packet(vpn_packet_t *packet)
161 ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
162 packet->len, device_info);
164 if(write(device_fd, packet->data + 14, packet->len - 14) < 0) {
165 logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, packet->len,
170 device_total_out += packet->len;
175 void dump_device_stats(void)
179 logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
180 logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
181 logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);