From: Johannes Berg <johannes@sipsolutions.net>
Date: Fri, 23 Jan 2009 21:54:03 +0000 (+0100)
Subject: mac80211: add interface list lock
X-Git-Tag: v2.6.30-rc1~662^2~836^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c771c9d8da1e8292ef8bf7fd4ce135dacc650130;p=pandora-kernel.git

mac80211: add interface list lock

Using only the RTNL has a number of problems, most notably that
ieee80211_iterate_active_interfaces() and other interface list
traversals cannot be done from the internal workqueue because it
needs to be flushed under the RTNL.

This patch introduces a new mutex that protects the interface list
against modifications. A more detailed explanation is part of the
code change.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

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