From: Florent Fourcot <florent.fourcot@enst-bretagne.fr>
Date: Thu, 7 Nov 2013 16:53:12 +0000 (+0100)
Subject: ipv6: enable IPV6_FLOWLABEL_MGR for getsockopt
X-Git-Tag: v3.13-rc1~105^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3fdfa5ff50aee5b524fb22b6e0e511b73752a257;p=pandora-kernel.git

ipv6: enable IPV6_FLOWLABEL_MGR for getsockopt

It is already possible to set/put/renew a label
with IPV6_FLOWLABEL_MGR and setsockopt. This patch
add the possibility to get information about this
label (current value, time before expiration, etc).

It helps application to take decision for a renew
or a release of the label.

v2:
 * Add spin_lock to prevent race condition
 * return -ENOENT if no result found
 * check if flr_action is GET

v3:
 * move the spin_lock to protect only the
   relevant code

Signed-off-by: Florent Fourcot <florent.fourcot@enst-bretagne.fr>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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