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) 2003-2004 Marc Lehmann <pcg@goof.com> |
3 | Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de> |
4 | |
4 | |
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5 | This file is part of GVPE. |
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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 |
6 | it under the terms of the GNU General Public License as published by |
8 | it under the terms of the GNU General Public License as published by |
7 | the Free Software Foundation; either version 2 of the License, or |
9 | the Free Software Foundation; either version 2 of the License, or |
8 | (at your option) any later version. |
10 | (at your 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, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | but 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 |
13 | GNU General Public License for more details. |
15 | GNU General 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 |
16 | along with this program; if not, write to the Free Software |
18 | along with gvpe; if not, write to the Free Software |
17 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
18 | */ |
20 | */ |
19 | |
21 | |
20 | #include "config.h" |
22 | #include "config.h" |
21 | |
23 | |
… | |
… | |
53 | tap_device::info () |
55 | tap_device::info () |
54 | { |
56 | { |
55 | return _("Linux tun/tap device"); |
57 | return _("Linux tun/tap device"); |
56 | } |
58 | } |
57 | |
59 | |
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60 | const char * |
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61 | tap_device::if_up () |
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62 | { |
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63 | return "/sbin/ifconfig $IFNAME hw ether $MAC mtu $MTU"; |
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64 | } |
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65 | |
58 | tap_device::tap_device () |
66 | tap_device::tap_device () |
59 | { |
67 | { |
60 | struct ifreq ifr; |
68 | struct ifreq ifr; |
61 | |
69 | |
62 | device = DEFAULT_DEVICE; |
70 | device = DEFAULT_DEVICE; |
… | |
… | |
64 | fd = open (device, O_RDWR); |
72 | fd = open (device, O_RDWR); |
65 | |
73 | |
66 | if (fd < 0) |
74 | if (fd < 0) |
67 | { |
75 | { |
68 | slog (L_ERR, _("could not open device %s: %s"), device, strerror (errno)); |
76 | slog (L_ERR, _("could not open device %s: %s"), device, strerror (errno)); |
69 | exit (1); |
77 | exit (EXIT_FAILURE); |
70 | } |
78 | } |
71 | |
79 | |
72 | memset (&ifr, 0, sizeof (ifr)); |
80 | memset (&ifr, 0, sizeof (ifr)); |
73 | #if TEST_ETHEREMU |
81 | #if TEST_ETHEREMU |
74 | ifr.ifr_flags = IFF_TUN | IFF_NO_PI; |
82 | ifr.ifr_flags = IFF_TUN | IFF_NO_PI; |
… | |
… | |
86 | strncpy (ifrname, ifr.ifr_name, IFNAMSIZ); |
94 | strncpy (ifrname, ifr.ifr_name, IFNAMSIZ); |
87 | ifrname [IFNAMSIZ] = 0; |
95 | ifrname [IFNAMSIZ] = 0; |
88 | } |
96 | } |
89 | else |
97 | else |
90 | { |
98 | { |
91 | slog (L_CRIT, _("unable to configure tun/tap interface: %s"), strerror (errno)); |
99 | slog (L_CRIT, _("unable to configure tun/tap interface, exiting: %s"), strerror (errno)); |
92 | exit (1); |
100 | exit (EXIT_FAILURE); |
93 | } |
101 | } |
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102 | |
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103 | #if 0 |
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104 | does not work |
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105 | id2mac (THISNODE->id, &ifr.ifr_hwaddr.sa_data); |
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106 | if (ioctl (fd, SIOCSIFHWADDR, &ifr)) |
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107 | { |
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108 | slog (L_ERR, _("cannot set MAC address for device %s, exiting: %s"), ifrname, strerror (errno)); |
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109 | exit (EXIT_FAILURE); |
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110 | } |
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111 | #endif |
94 | |
112 | |
95 | if (ioctl (fd, TUNSETPERSIST, conf.ifpersist ? 1 : 0)) |
113 | if (ioctl (fd, TUNSETPERSIST, conf.ifpersist ? 1 : 0)) |
96 | slog (L_WARN, _("cannot set persistency mode for device %s: %s"), ifrname, strerror (errno)); |
114 | slog (L_WARN, _("cannot set persistency mode for device %s: %s"), ifrname, strerror (errno)); |
97 | |
115 | |
98 | slog (L_DEBUG, _("%s is a %s"), device, info ()); |
116 | slog (L_DEBUG, _("%s is a %s"), device, info ()); |