From: Luca Coelho <luca@coelho.fi>
To: Michal Kazior <michal.kazior@tieto.com>
Cc: linux-wireless@vger.kernel.org, johannes@sipsolutions.net
Subject: Re: [PATCH] mac80211: protect AP VLAN list with local->mtx
Date: Wed, 19 Mar 2014 16:02:24 +0200 [thread overview]
Message-ID: <1395237744.2854.12.camel@dubbel> (raw)
In-Reply-To: <1394021648-22605-1-git-send-email-michal.kazior@tieto.com>
On Wed, 2014-03-05 at 13:14 +0100, Michal Kazior wrote:
> It was impossible to change chanctx of master AP
> for AP VLANs because the copy function requires
> RTNL which can't be simply taken in mac80211 code
> due to possible deadlocks.
>
> This is required for future chanctx reservation
> that re-bind vifs to new chanctx. This requires
> safe AP VLAN iteration without RTNL.
>
> Now VLANs can be iterated while holding either
> RTNL or local->mtx because the list is modified
> while holding both of these locks.
>
> Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
> ---
Applied to my mac80211-next-csa.git tree.
--
Luca.
next prev parent reply other threads:[~2014-03-19 14:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-05 12:14 [PATCH] mac80211: protect AP VLAN list with local->mtx Michal Kazior
2014-03-19 14:02 ` Luca Coelho [this message]
2014-03-19 14:06 ` Johannes Berg
2014-03-20 7:12 ` Michal Kazior
2014-03-28 8:37 ` Johannes Berg
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