diff options
| author | David Sommerseth <davids@redhat.com> | 2011-06-15 12:00:57 +0200 |
|---|---|---|
| committer | David Sommerseth <davids@redhat.com> | 2011-06-15 12:00:57 +0200 |
| commit | 22c7d4699b4aaaa4d8512dd841564ac1606c0556 (patch) | |
| tree | a21c213dea72a01d2ffaf61b5e1fbf5ef519e9bc | |
| parent | Documented --x509-username-field option (diff) | |
| download | openvpn-22c7d4699b4aaaa4d8512dd841564ac1606c0556.tar.xz | |
Remove support for Linux 2.2 configuration fallback
When configuring OpenVPN nowadays, the TUN/TAP configuration can
sometimes jump into the Linux 2.2 fallback code paths, which will
also fails. The reason it jumps into fallback mode is that the
tun/tap device already exists or that /dev/net/tun does not exist.
This can be very confusing, as /dev/tunX which the fallback mode tries
to use, does not exist on Linux 2.4 and newer.
Considering that the last Linux 2.2 update was released 25-Feb-2004
and the first Linux 2.4 release came 04-Jan-2001, there are no
reasonable reasons to help users to stay on outdated kernels.
I consider this extra code path just waste of bytes ... so lets make
the world simpler.
Signed-off-by: David Sommerseth <davids@redhat.com>
Acked-by: Gert Doering <gert@greenie.muc.de>
(cherry picked from commit ce637abdafdc19547fc97192033a4d1703ecaf23)
| -rw-r--r-- | openvpn.8 | 10 | ||||
| -rw-r--r-- | tun.c | 13 |
2 files changed, 3 insertions, 20 deletions
@@ -5603,11 +5603,6 @@ Make device: Load driver: .B modprobe tun - -If you have Linux 2.2 or earlier, you should obtain version 1.1 of the -TUN/TAP driver from -.I http://vtun.sourceforge.net/tun/ -and follow the installation instructions. .\"********************************************************* .SH EXAMPLES Prior to running these examples, you should have OpenVPN installed on two @@ -5628,10 +5623,7 @@ If you installed from RPM, the .B mknod step may be omitted, because the RPM install does that for you. -If you have Linux 2.2, you should obtain version 1.1 of the -TUN/TAP driver from -.I http://vtun.sourceforge.net/tun/ -and follow the installation instructions. +Only Linux 2.4 and newer are supported. For other platforms, consult the INSTALL file at .I http://openvpn.net/install.html @@ -1127,7 +1127,7 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6 if ((tt->fd = open (node, O_RDWR)) < 0) { msg (M_WARN | M_ERRNO, "Note: Cannot open TUN/TAP dev %s", node); - goto linux_2_2_fallback; + return; } /* @@ -1171,7 +1171,7 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6 if (ioctl (tt->fd, TUNSETIFF, (void *) &ifr) < 0) { msg (M_WARN | M_ERRNO, "Note: Cannot ioctl TUNSETIFF %s", dev); - goto linux_2_2_fallback; + return; } msg (M_INFO, "TUN/TAP device %s opened", ifr.ifr_name); @@ -1207,15 +1207,6 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6 tt->actual_name = string_alloc (ifr.ifr_name, NULL); } return; - - linux_2_2_fallback: - msg (M_INFO, "Note: Attempting fallback to kernel 2.2 TUN/TAP interface"); - if (tt->fd >= 0) - { - close (tt->fd); - tt->fd = -1; - } - open_tun_generic (dev, dev_type, dev_node, ipv6, false, true, tt); } #else |