2 device.c -- Interaction with Solaris tun device
3 Copyright (C) 2001-2005 Ivo Timmermans,
4 2001-2009 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 along
17 with this program; if not, write to the Free Software Foundation, Inc.,
18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 #include <sys/stropts.h>
25 #include <sys/sockio.h>
26 #include <net/if_tun.h>
34 #define DEFAULT_DEVICE "/dev/tun"
39 static char *device_info = NULL;
41 static uint64_t device_total_in = 0;
42 static uint64_t device_total_out = 0;
44 bool setup_device(void) {
45 int ip_fd = -1, if_fd = -1;
49 if(!get_config_string(lookup_config(config_tree, "Device"), &device))
50 device = xstrdup(DEFAULT_DEVICE);
52 if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
53 logger(LOG_ERR, "Could not open %s: %s", device, strerror(errno));
60 while(*ptr && !isdigit((int) *ptr))
64 if((ip_fd = open("/dev/ip", O_RDWR, 0)) < 0) {
65 logger(LOG_ERR, "Could not open /dev/ip: %s", strerror(errno));
69 /* Assign a new PPA and get its unit number. */
70 if((ppa = ioctl(device_fd, TUNNEWPPA, ppa)) < 0) {
71 logger(LOG_ERR, "Can't assign new interface: %s", strerror(errno));
75 if((if_fd = open(device, O_RDWR, 0)) < 0) {
76 logger(LOG_ERR, "Could not open %s twice: %s", device,
81 if(ioctl(if_fd, I_PUSH, "ip") < 0) {
82 logger(LOG_ERR, "Can't push IP module: %s", strerror(errno));
86 /* Assign ppa according to the unit number returned by tun device */
87 if(ioctl(if_fd, IF_UNITSEL, (char *) &ppa) < 0) {
88 logger(LOG_ERR, "Can't set PPA %d: %s", ppa, strerror(errno));
92 if(ioctl(ip_fd, I_LINK, if_fd) < 0) {
93 logger(LOG_ERR, "Can't link TUN device to IP: %s", strerror(errno));
97 if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
98 xasprintf(&iface, "tun%d", ppa);
100 device_info = "Solaris tun device";
102 logger(LOG_INFO, "%s is a %s", device, device_info);
107 void close_device(void) {
114 bool read_packet(vpn_packet_t *packet) {
117 if((inlen = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
118 logger(LOG_ERR, "Error while reading from %s %s: %s", device_info,
119 device, strerror(errno));
123 switch(packet->data[14] >> 4) {
125 packet->data[12] = 0x08;
126 packet->data[13] = 0x00;
129 packet->data[12] = 0x86;
130 packet->data[13] = 0xDD;
133 ifdebug(TRAFFIC) logger(LOG_ERR,
134 "Unknown IP version %d while reading packet from %s %s",
135 packet->data[14] >> 4, device_info, device);
139 packet->len = inlen + 14;
141 device_total_in += packet->len;
143 ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", packet->len,
149 bool write_packet(vpn_packet_t *packet) {
150 ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s",
151 packet->len, device_info);
153 if(write(device_fd, packet->data + 14, packet->len - 14) < 0) {
154 logger(LOG_ERR, "Can't write to %s %s: %s", device_info,
155 device, strerror(errno));
159 device_total_out += packet->len;
164 void dump_device_stats(void) {
165 logger(LOG_DEBUG, "Statistics for %s %s:", device_info, device);
166 logger(LOG_DEBUG, " total bytes in: %10"PRIu64, device_total_in);
167 logger(LOG_DEBUG, " total bytes out: %10"PRIu64, device_total_out);