3 Copyright (C) 2002-2003 Ivo Timmermans <ivo@o2w.nl>,
4 2002-2003 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 1.1.2.7 2003/07/12 17:41:48 guus Exp $
27 #include <sys/types.h>
33 #include <sys/ioctl.h>
34 #include <sys/socket.h>
35 #include <netpacket/packet.h>
36 #include <net/ethernet.h>
49 char ifrname[IFNAMSIZ];
52 int device_total_in = 0;
53 int device_total_out = 0;
55 int setup_device(void)
58 struct sockaddr_ll sa;
63 (lookup_config(config_tree, "Interface"), &interface))
66 if(!get_config_string(lookup_config(config_tree, "Device"), &device))
69 device_info = _("raw socket");
71 if((device_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0) {
72 logger(LOG_ERR, _("Could not open %s: %s"), device_info,
77 memset(&ifr, 0, sizeof(ifr));
78 strncpy(ifr.ifr_ifrn.ifrn_name, interface, IFNAMSIZ);
79 if(ioctl(device_fd, SIOCGIFINDEX, &ifr)) {
81 logger(LOG_ERR, _("Can't find interface %s: %s"), interface,
86 memset(&sa, '0', sizeof(sa));
87 sa.sll_family = AF_PACKET;
88 sa.sll_protocol = htons(ETH_P_ALL);
89 sa.sll_ifindex = ifr.ifr_ifindex;
91 if(bind(device_fd, (struct sockaddr *) &sa, (socklen_t) sizeof(sa))) {
92 logger(LOG_ERR, _("Could not bind to %s: %s"), device, strerror(errno));
96 logger(LOG_INFO, _("%s is a %s"), device, device_info);
101 void close_device(void)
108 int read_packet(vpn_packet_t *packet)
114 if((lenin = read(device_fd, packet->data, MTU)) <= 0) {
115 logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
116 device, strerror(errno));
122 device_total_in += packet->len;
124 ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
131 int write_packet(vpn_packet_t *packet)
135 ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
136 packet->len, device_info);
138 if(write(device_fd, packet->data, packet->len) < 0) {
139 logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
144 device_total_out += packet->len;
149 void dump_device_stats(void)
153 logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
154 logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
155 logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);