From: Vlad Yasevich <vladislav.yasevich@hp.com>
Date: Mon, 23 Nov 2009 20:54:01 +0000 (-0500)
Subject: sctp: prevent too-fast association id reuse
X-Git-Tag: v2.6.33-rc1~388^2~167^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4814326b59db0cfd18ac652626d955ad3f57fb0f;p=pandora-kernel.git

sctp: prevent too-fast association id reuse

We use the idr subsystem and always ask for an id
at or above 1.  This results in a id reuse when one
association is terminated while another is created.

To prevent re-use, we keep track of the last id returned
and ask for that id + 1 as a base for each query.  We let
the idr spin lock protect this base id as well.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
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