Re: Status of 802.11s in wireless-testing?

[Johannes Berg <johannes@sipsolutions.net>]

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On Wed, 2009-08-05 at 12:50 -0400, John W. Linville wrote:
> On Wed, Aug 05, 2009 at 09:08:54AM -0700, xxiao wrote:
> > I didn't see patches from open80211s project for a while, which
> > means it will break as the rest mac80211/drivers are evolving quickly.
> 
> You may be right, but it _should_not_ mean that -- at least not
> necessarily.  Yes, there will be accidental breakage from time to time.
> But developers ought to keep mesh in mind when making changes and
> they should be "on the hook" to fix whatever breaks.

Right now, except from the stuff Luis had broken and fixed, the real
problem is that there are a bunch of bugs that appear to have been in
the code forever, just never noticed -- for instance the code can end up
calling synchronize_rcu() in an atomic section.

This is the reason for disabling it -- it can splatter all over the
scheduler if that happens, and it's not clear to me that it cannot
happen. It seems not to happen in _most_ scenarios, but I've certainly
caused it to happen by not beaconing, for instance.

johannes

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