2 device.c -- Interaction with Solaris tun device
3 Copyright (C) 2001-2005 Ivo Timmermans,
4 2001-2006 Guus Sliepen <guus@tinc-vpn.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.
26 #include <sys/stropts.h>
27 #include <sys/sockio.h>
28 #include <net/if_tun.h>
35 #define DEFAULT_DEVICE "/dev/tun"
40 char *device_info = NULL;
42 static int device_total_in = 0;
43 static int device_total_out = 0;
45 bool setup_device(void) {
46 int ip_fd = -1, if_fd = -1;
52 if(!get_config_string(lookup_config(config_tree, "Device"), &device))
53 device = DEFAULT_DEVICE;
55 if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
56 logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
63 while(*ptr && !isdigit((int) *ptr))
67 if((ip_fd = open("/dev/ip", O_RDWR, 0)) < 0) {
68 logger(LOG_ERR, _("Could not open /dev/ip: %s"), strerror(errno));
72 /* Assign a new PPA and get its unit number. */
73 if((ppa = ioctl(device_fd, TUNNEWPPA, ppa)) < 0) {
74 logger(LOG_ERR, _("Can't assign new interface: %s"), strerror(errno));
78 if((if_fd = open(device, O_RDWR, 0)) < 0) {
79 logger(LOG_ERR, _("Could not open %s twice: %s"), device,
84 if(ioctl(if_fd, I_PUSH, "ip") < 0) {
85 logger(LOG_ERR, _("Can't push IP module: %s"), strerror(errno));
89 /* Assign ppa according to the unit number returned by tun device */
90 if(ioctl(if_fd, IF_UNITSEL, (char *) &ppa) < 0) {
91 logger(LOG_ERR, _("Can't set PPA %d: %s"), ppa, strerror(errno));
95 if(ioctl(ip_fd, I_LINK, if_fd) < 0) {
96 logger(LOG_ERR, _("Can't link TUN device to IP: %s"), strerror(errno));
100 if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
101 asprintf(&iface, "tun%d", ppa);
103 device_info = _("Solaris tun device");
105 logger(LOG_INFO, _("%s is a %s"), device, device_info);
110 void close_device(void) {
116 bool read_packet(vpn_packet_t *packet) {
121 if((inlen = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
122 logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
123 device, strerror(errno));
127 switch(packet->data[14] >> 4) {
129 packet->data[12] = 0x08;
130 packet->data[13] = 0x00;
133 packet->data[12] = 0x86;
134 packet->data[13] = 0xDD;
137 ifdebug(TRAFFIC) logger(LOG_ERR,
138 _ ("Unknown IP version %d while reading packet from %s %s"),
139 packet->data[14] >> 4, device_info, device);
143 packet->len = inlen + 14;
145 device_total_in += packet->len;
147 ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
153 bool write_packet(vpn_packet_t *packet) {
156 ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
157 packet->len, device_info);
159 if(write(device_fd, packet->data + 14, packet->len - 14) < 0) {
160 logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info,
161 device, strerror(errno));
165 device_total_out += packet->len;
170 void dump_device_stats(void) {
173 logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
174 logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
175 logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);