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Comparing gvpe/src/device-linux.C (file contents):
Revision 1.5 by pcg, Thu Oct 16 02:41:21 2003 UTC vs.
Revision 1.19 by root, Thu Jan 29 00:21:39 2015 UTC

1/* 1/*
2 device-linux.C -- Interaction with Linux tun/tap device 2 device-linux.C -- Interaction with Linux tun/tap device
3 Copyright (C) 2003 Marc Lehmann <pcg@goof.com> 3 Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de>
4 4
5 This file is part of GVPE.
6
5 This program is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify it
6 it under the terms of the GNU General Public License as published by 8 under the terms of the GNU General Public License as published by the
7 the Free Software Foundation; either version 2 of the License, or 9 Free Software Foundation; either version 3 of the License, or (at your
8 (at your option) any later version. 10 option) any later version.
9 11
10 This program is distributed in the hope that it will be useful, 12 This program is distributed in the hope that it will be useful, but
11 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
13 GNU General Public License for more details. 15 Public License for more details.
14 16
15 You should have received a copy of the GNU General Public License 17 You should have received a copy of the GNU General Public License along
16 along with this program; if not, write to the Free Software 18 with this program; if not, see <http://www.gnu.org/licenses/>.
17 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19
20 Additional permission under GNU GPL version 3 section 7
21
22 If you modify this Program, or any covered work, by linking or
23 combining it with the OpenSSL project's OpenSSL library (or a modified
24 version of that library), containing parts covered by the terms of the
25 OpenSSL or SSLeay licenses, the licensors of this Program grant you
26 additional permission to convey the resulting work. Corresponding
27 Source for a non-source form of such a combination shall include the
28 source code for the parts of OpenSSL used as well as that of the
29 covered work.
18*/ 30*/
19 31
20#include "config.h" 32#include "config.h"
21 33
22#include <cstdio> 34#include <cstdio>
… …
43#include "gettext.h" 55#include "gettext.h"
44 56
45#include "conf.h" 57#include "conf.h"
46 58
47#if TEST_ETHEREMU 59#if TEST_ETHEREMU
60# define IF_istun
48# include "ether_emu.C" 61# include "ether_emu.C"
49#endif 62#endif
50 63
51const char * 64const char *
52tap_device::info () 65tap_device::info ()
53{ 66{
54 return _("Linux tun/tap device"); 67 return _("Linux tun/tap device");
55} 68}
56 69
70const char *
71tap_device::if_up ()
72{
73 return "/sbin/ifconfig $IFNAME hw ether $MAC mtu $MTU";
74}
75
57tap_device::tap_device () 76tap_device::tap_device ()
58{ 77{
59 struct ifreq ifr; 78 struct ifreq ifr;
60 79
61 device = DEFAULT_DEVICE; 80 device = (char *)DEFAULT_DEVICE;
62 81
63 fd = open (device, O_RDWR); 82 fd = open (device, O_RDWR);
64 83
65 if (fd < 0) 84 if (fd < 0)
66 { 85 {
67 slog (L_ERR, _("could not open device %s: %s"), device, strerror (errno)); 86 slog (L_ERR, _("could not open device %s: %s"), device, strerror (errno));
68 exit (1); 87 exit (EXIT_FAILURE);
69 } 88 }
70 89
71 memset (&ifr, 0, sizeof (ifr)); 90 memset (&ifr, 0, sizeof (ifr));
72#if TEST_ETHEREMU 91#if TEST_ETHEREMU
73 ifr.ifr_flags = IFF_TUN | IFF_NO_PI; 92 ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
… …
85 strncpy (ifrname, ifr.ifr_name, IFNAMSIZ); 104 strncpy (ifrname, ifr.ifr_name, IFNAMSIZ);
86 ifrname [IFNAMSIZ] = 0; 105 ifrname [IFNAMSIZ] = 0;
87 } 106 }
88 else 107 else
89 { 108 {
90 slog (L_CRIT, _("unable to configure tun/tap interface: %s"), strerror (errno)); 109 slog (L_CRIT, _("unable to configure tun/tap interface, exiting: %s"), strerror (errno));
91 exit (1); 110 exit (EXIT_FAILURE);
92 } 111 }
112
113#if 0
114 does not work
115 id2mac (THISNODE->id, &ifr.ifr_hwaddr.sa_data);
116 if (ioctl (fd, SIOCSIFHWADDR, &ifr))
117 {
118 slog (L_ERR, _("cannot set MAC address for device %s, exiting: %s"), ifrname, strerror (errno));
119 exit (EXIT_FAILURE);
120 }
121#endif
93 122
94 if (ioctl (fd, TUNSETPERSIST, conf.ifpersist ? 1 : 0)) 123 if (ioctl (fd, TUNSETPERSIST, conf.ifpersist ? 1 : 0))
95 slog (L_WARN, _("cannot set persistency mode for device %s: %s"), ifrname, strerror (errno)); 124 slog (L_WARN, _("cannot set persistency mode for device %s: %s"), ifrname, strerror (errno));
96 125
97 slog (L_DEBUG, _("%s is a %s"), device, info ()); 126 slog (L_DEBUG, _("%s is a %s"), device, info ());
… …
145 if (ether_emu.tap_to_tun (pkt) && 174 if (ether_emu.tap_to_tun (pkt) &&
146 write (fd, &((*pkt)[14]), pkt->len - 14) < 0) 175 write (fd, &((*pkt)[14]), pkt->len - 14) < 0)
147#else 176#else
148 if (write (fd, &((*pkt)[0]), pkt->len) < 0) 177 if (write (fd, &((*pkt)[0]), pkt->len) < 0)
149#endif 178#endif
150 slog (L_ERR, _("can't write to %s %s: %s"), info (), DEFAULT_DEVICE, 179 slog (L_ERR, _("can't write %d byte packet to %s %s: %s"), pkt->len, info (), DEFAULT_DEVICE,
151 strerror (errno)); 180 strerror (errno));
152} 181}
153 182

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