From: Johannes Berg <johannes@sipsolutions.net>
To: Arik Nemtsov <arik@wizery.com>
Cc: linux-wireless@vger.kernel.org, "Luis R. Rodriguez" <mcgrof@suse.com>
Subject: Re: [PATCH] nl80211: increase the max number of rules in regdomain
Date: Thu, 18 Dec 2014 14:56:51 +0100 [thread overview]
Message-ID: <1418911011.6134.10.camel@sipsolutions.net> (raw)
In-Reply-To: <1418910981.6134.9.camel@sipsolutions.net> (sfid-20141218_145628_745961_945194E6)
On Thu, 2014-12-18 at 14:56 +0100, Johannes Berg wrote:
> On Wed, 2014-12-17 at 18:00 +0200, Arik Nemtsov wrote:
> > Some network cards (Intel) produce per-channel regdomains and rely on
> > cfg80211 to merge rules as needed. This hits the max rules limit and
> > fails.
>
> Maybe we should consider just getting rid of this or bumping it to
> something ridiculously large like 1000? Looking at how this is (not)
> used, there's no real sense in limiting it. The only possible problem is
> the O(n^2) complexity when doing an intersection, but processing a
> million combinations is probably not a big deal? In fact, even if that
> becomes a problem, we can easily optimise that complexity away by
> sorting the rules or so. Then it becomes O(n log n)...
For now I'll apply this anyway though.
johannes
next prev parent reply other threads:[~2014-12-18 13:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-17 16:00 [PATCH] nl80211: increase the max number of rules in regdomain Arik Nemtsov
2014-12-18 13:56 ` Johannes Berg
2014-12-18 13:56 ` Johannes Berg [this message]
2014-12-18 13:59 ` Arik Nemtsov
2014-12-18 14:01 ` Johannes Berg
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