[Bridge] [RFC PATCH 0/2] Allow full bridge configuration via sysfs

Bill Nottingham notting at redhat.com
Mon Jul 7 14:34:20 PDT 2008

Patrick McHardy (kaber at trash.net) said: 
>> Also, moving bonding configuration to netlink seems
>> like a step backwards.
> Please read up on what the standard interface for network
> configuration is

OK, let's see.

In the code: Hm, no TODO or FIXME.

In the included documentation:

  Module options, modprobe.conf, or 'distro-specific
  configuration file', ifenslave, or sysfs.

  sysctl, obviously.

  Hey, here's netlink! Doucmentation points only to a wiki. Referred
  to by zero other included in-kernel documentation.

Well, that's helpful.

Let's try the OSDL web!

  brctl (which uses ioctl and sysfs). And /etc/net.
  Module parameters only, including the lovely 'load driver multiple times'
  method. Doesn't even mention sysfs.

I could look at wireless network configuration, but I doubt that's going to
help your argument.

> I'm tired of reiterating this once a week.

Well, if the documentation that described this as the standard existed,
or wasn't such crap, perhaps you wouldn't have to.

That being said, how is moving from adding a bonding slave from:
  echo "+eth0" >  /sys/class/net/bond0/bonding/slaves to:

a worthwhile improvement for the admin? Let's see, a kernel-userspace
protocol with magic message formats. Hey, we reinvented ioctl!

Why, if netlink is the standard (and it's been around for a long
damn time), was sysfs configuration for bonding added in 2005? Why
was bridge configuration added in 2005, and *extended* in 2006 and
2007? Why were the user-space tools such as brctl ported from ioctl
to sysfs?


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