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ifplugd 0.28
Copyright 2002-2005 Lennart Poettering <mzvscyhtq (at) 0pointer (dot)
de>
* [1]License
* [2]News
* [3]Overview
* [4]Current Status
* [5]Documentation
* [6]Requirements
* [7]Installation
* [8]Acknowledgements
* [9]Download
License
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
News
Sat Jun 4 2005:
[10]Version 0.28 released, changes include: build fixes from Stefan
Seyfried.
Wed Mar 30 2005:
[11]Version 0.27 released, changes include: new option --no-startup.
Sun Dec 19 2004:
[12]Version 0.26 released, changes include: changed MII code for
better compatibility with some 3COM Boomerang cards.
Mon May 10 2004:
[13]Version 0.25 released, changes include: Revert to more classic
link checking support. The new checking order is: ETHTOOL, MII, WLAN,
IFF. The obsolete API "PRIV" is no longer checked by the automatic API
detection code. However, you may enable it forcibly by passing -m priv
on the command line.
Mon Apr 12 2004:
[14]Version 0.24 released, changes include: add IFF_RUNNING link check
support and make it the default. This might break some setups. You may
workaround this by passing -m to the daemon for selecting a different
API. Please report breakages!
Wed Apr 7 2004:
[15]Version 0.23 released, changes include: don't make /dev/tty1 the
controlling TTY when beeping
Tue Feb 10 2004:
[16]Version 0.22 released, changes include: rename ifstatus to
ifplugstatus due to namespace collision, minor fixes
Mon Jan 26 2004:
[17]Version 0.21b released, added missing file.
Mon Jan 26 2004:
[18]Version 0.21 released, changes include: better compatibility with
wireless devices, compatibility with newer kernels
Sun Nov 9 2003:
[19]Version 0.20 released, changes include: fix wrong message, build
fix
Mon Oct 20 2003:
[20]Version 0.19 released, changes include: New option
--wait-for-kill, this requires [21]libdaemon 0.3
Fri Oct 17 2003:
[22]Version 0.18 released, changes include: Some bugs fixed
Fri Sep 13 2003:
[23]Version 0.17b released, changes include: typo and date fix
Fri Sep 13 2003:
[24]Version 0.17 released, changes include: documentation update,
better support for multiple interfaces, gcc 2.95 build fix
Thu Aug 13 2003:
[25]Version 0.16 released, changes include: RPM spec file added, build
fixes, WLAN improvements (including compatibility with the upcoming
waproamd, a WLAN roaming daemon), monitor mode for use in conjunction
with PCMCIA devices, better support for multiple interface setups,
SUPPORTED_DRIVERS returns
Thu July 10 2003:
[26]Version 0.15 released, changes include: bad umask fix,
documentation update
Mon July 7 2003:
[27]Version 0.14 released, changes include: autoconf usage, new
dependency [28]libdaemon, wireless LAN support, support for
suspending/resuming, many fixes
Overview
ifplugd is a Linux daemon which will automatically configure your
ethernet device when a cable is plugged in and automatically
unconfigure it if the cable is pulled. This is useful on laptops with
onboard network adapters, since it will only configure the interface
when a cable is really connected.
ifplugd ifplugd interfaces with your distribution's native network
configuration utilities.
Some features:
* Uses your distribution's native ifup/ifdown programs.
* May beep when the cable is unplugged, plugged, the interface
configuration succeeded or failed.
* Supports the Linux SIOCETHTOOL (newer, aka ethtool API),
SIOCGMIIREG (older, aka mii-diag/mii-tool API) and SIOCDEVPRIVATE
(oldest, aka mii-tool API) ioctl()s for getting link status.
Release 0.24 introduces support for link detection with the
IFF_RUNNING interface flag.
* Syslog support
* Small program - the binary is just 25 KB (plus 16 KB for
libdaemon).
* Multiple ethernet interface support
* Can be configured to ignore short "unplugged" periods (-d option)
or short "plugged" periods(-u option)
* Support for wireless networking. Whenever an association to an AP
is detected the network is configured. Have a look on [29]waproamd
if you need a facility to configure WEP keys before AP
associations succeed.
* Compatibility mode for network devices which do not support cable
detection (-F option)
Current Status
Version 0.28 is stable and has all the sensible features its users
could think of.
Documentation
Have a look on the man pages [30]ifplugd(8), [31]ifplugstatus(8),
[32]ifplugd.conf(5). (An XSLT capable browser is required)
Configuration
Edit /etc/ifplugd/ifplugd.conf for configuration changes. This file is
a bourne shell script sourced by the init script and used to start
ifplugd with appropriate arguments. You may specify more than one
ethernet interface in INTERFACES. For each interface a seperate
instance of ifplugd is spawned. The arguments specified in ARGS are
append to ifplugd's command line. Have a look on ifplugd -h or man
ifplugd for further information about the available options.
The network interface which is controlled by ifplugd should not be
configured automatically by your distribution's network subsystem,
since ifplugd will do this for you if needed.
On Debian systems, any interfaces named in ifplugd's INTERFACES
environment variable should not also be listed in an "auto" stanza in
/etc/network/interfaces.
Troubleshooting
When you are using the hotplug subsystem (Debian package hotplug) you
may notice that the network device is configured even when it is not
listed on an auto line in /etc/network/interface. This may be due to
hotplug being configured to ifup the network interface when it becomes
available. This was the default behavior in the Debian hotplug package
prior to release 0.0.20030117-1, for example. To prevent this you
should either upgrade your hotplug package or comment out the ifup
call in /etc/hotplug/net.agent.
When using ifplugd together with APM (and probably ACPI) suspends,
strange things may happen: some network devices fail to detect the
network cable for a short period of time before and after the suspend.
When using the -f switch, this will be treated as "no link beat", thus
the network is shutdown after a timeout. During this timeout the
machine changes to suspended state. When it is resumed again, the
timeout period will have expired and so the network is deconfigured,
however, as the next cable detection succeeds, the network is
configured again immediately. To fix this problem, ifplugd should be
disabled before the APM suspend and enabled back after the suspend.
This may be done by using apmd and adding a script to
/etc/apm/{suspend,resume}.d which simply calls /etc/init.d/ifplugd
suspend, resp. /etc/init.d/ifplugd resume. It might even be a good
idea to shut down the network completely during suspend, this may be
achieved by calling /etc/init.d/ifplugd stop and /etc/init.d/ifplugd
start in the appropriate places. I strongly urge the packagers of this
software for the Linux distributions to add such scripts to their
packages.
FAQ
1. Q: I want to use ifplugd with my PCMCIA device, but ifplugd quits
when it doesn't find eth0, when I have not inserted the card. What
can I do?
A: Use the -f switch. This is not very clean however, since
modprobe is called on each cable detection query of ifplugd to
load a module for the network device. This is suboptimal. You
should probably run ifplugd only when the card is really inserted.
2. Q: I am using the -f switch, but the kernel logs are getting
filled with messages like "modprobe: modprobe: Can't locate module
eth0". What can I do?
A: Make sure you have a line like alias eth0 off in your
/etc/modules.conf
3. Q: When the cable is unplugged and the interface shut down it is
still available with ifconfig and markes as UP. Why this?
A: ifplugd cannot detect the link beat with a shut down interface
on certain (most as of kernel 2.4.19) network drivers. Thus
ifplugd enables the interface before querying the link status.
This may be switched off with -a flag. You might want to use it if
you have a sane network driver (e.g. eepro100). The subdirectory
patches/ in the ifplugd distribution includes a patch for the
8139too 0.9.26 driver, which makes the driver compatible with -a.
Don't ask me how to apply this patch. If you don't know, you won't
need it.
4. Q: Does it work with anything else than plain ethernet or wireless
LAN?
A: Certainly not, since the MII and ETHTOOL ioctl()s and the
wireless extension don't exist on other network device types.
5. Q: I have a Realtek 8139 based network card. Everytime ifplugd
starts on bootup my machine freezes. What can I do?
A: This is a bug in the 8139too driver 0.9.25 (at least) shipped
with Linux 2.4.19, please upgrade to 8139too 0.9.26 (Linux 2.4.20
or seperately at
[33]http://www.sourceforge.net/projects/gkernel/).
6. Q: There are already laptop-net's ifd and miid, why did you write
your own daemon?
A: laptop-net was too integrated with its profile system and
didn't work on my hardware when I had a look on it. It seemed
easier to me to write a simple but feature complete replacement
than using laptop-net without most of the special features
disabled. I didn't know about miid when I wrote ifplugd, but in
any case ifplugd is much better than miid. For a comparison of
miid and ifplugd, have a look on
[34]http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=162763&repeat
merged=yes
7. Q: I have two interfaces (e.g. WLAN and copper ethernet), both
controlled by ifplugd, and want to force the network traffic to go
over the faster one of them, in case both are available at the
same time. How can I do this?
A: A tool I wrote called [35]ifmetric might be exactly what you're
looking for.
Requirements
A newer Linux Kernel (I think 2.2 is good enough, alltough I tested it
only with 2.4) with a compatible device driver and ethernet card. Most
modern cards and drivers are compatible, like mine which works with
the 8139too driver.
ifplugd was developed and tested on Debian GNU/Linux "testing" from
July 2003, it should work on most other Linux distributions (and maybe
Unix versions) since it uses GNU autoconf and GNU libtool for source
code configuration and shared library management.
The machine used was a Medion 9580-F laptop with a Realtek 8139
network card and a PRISM1 PCMCIA wireless LAN card.
ifplugd needs [36]libdaemon.
Installation
As this package is made with the GNU autotools you should run
./configure inside the distribution directory for configuring the
source tree. After that you should run make for compilation and make
install (as root) for installation of ifplugd.
The installation scripts create an init script in
${sysconfdir}/init.d/ifplugd, however no /etc/rc?.d/ links are created
for it.
Extensive installation instructions for installation of ifplugd on
Fedora Core 1 are available at [37]Geoff Ericksson's web site.
Acknowledgements
For the developers of mii-diag, ethtool and laptop-net, since I looked
on their source codes for learning how to use the link beat ioctls.
Oliver Kurth for packaging ifplugd for Debian and ifplugd's manpage
Stefan Seyfried, Thomas Hood, Asgeir Nilsen, Sean Reifschneider, R.
Steve McKown, David Mitchell, Norbert Preining, Herbert Graeber for
patches
Frederic Lepied for integrating ifplugd into Mandrake Linux
Download
The newest release is always available from
[38]http://0pointer.de/lennart/projects/ifplugd/
The current release is [39]0.28
Get ifplugd's development sources from the [40]Subversion
[41]repository ([42]viewcvs):
svn checkout svn://seth.intheinter.net/ifplugd/trunk ifplugd
You may find an up to date Debian package of ifplugd on the [43]Debian
package repository.
ifplugd is nowadays included in many popular distributions (Mandrake,
Gentoo, Suse, Debian, Ubuntu); [44]Conectiva packages are available
courtesy of Gonzalo Nemmi. Fedora Core packages are available from
[45]Dag Wieers.
If you want to be notified whenever I release a new version of this
software use the subscription feature of [46]Freshmeat.
New! There is a joint ifplugd and waproamd [47]mailing list available.
_________________________________________________________________
Lennart Poettering <mzvscyhtq (at) 0pointer (dot) de>, June 2005
$Id: README.html.in 124 2005-06-04 19:22:59Z lennart $
References
1. README#license
2. README#news
3. README#overview
4. README#status
5. README#documentation
6. README#requirements
7. README#installation
8. README#acks
9. README#download
10. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.27.tar.gz
11. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.27.tar.gz
12. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.26.tar.gz
13. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.25.tar.gz
14. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.24.tar.gz
15. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.23.tar.gz
16. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.22.tar.gz
17. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.21b.tar.gz
18. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.21.tar.gz
19. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.20.tar.gz
20. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.19.tar.gz
21. http://0pointer.de/lennart/projects/libdaemon/
22. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.18.tar.gz
23. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.17b.tar.gz
24. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.17.tar.gz
25. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.16.tar.gz
26. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.15.tar.gz
27. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.14.tar.gz
28. http://0pointer.de/lennart/projects/libdaemon/
29. http://0pointer.de/lennart/projects/waproamd/
30. http://0pointer.de/lennart/projects/ifplugd/ifplugd.8.xml
31. http://0pointer.de/lennart/projects/ifplugd/ifplugstatus.8.xml
32. http://0pointer.de/lennart/projects/ifplugd/ifplugd.conf.5.xml
33. http://www.sourceforge.net/projects/gkernel/
34. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=162763&repeatmerged=yes
35. http://0pointer.de/lennart/projects/ifmetric/
36. http://0pointer.de/lennart/projects/libdaemon/
37. http://www.acmc.uq.edu.au/~gbe/linux/installation_of_ifplugd.html
38. http://0pointer.de/lennart/projects/ifplugd/
39. http://0pointer.de/lennart/projects/ifplugd/ifplugd-0.28.tar.gz
40. http://subversion.tigris.org/
41. svn://seth.intheinter.net/ifplugd
42. http://0pointer.de/cgi-bin/viewcvs.cgi/?root=ifplugd
43. http://packages.debian.org/ifplugd
44. http://www.linuxdicas.com.ar/caleb/rpm
45. http://dag.wieers.com/packages/ifplugd/
46. http://freshmeat.net/projects/ifplugd/
47. https://seth.intheinter.net/mailman/listinfo/ifplugd-discuss
|
