From: Patrick McHardy <kaber@trash.net>
Date: Fri, 4 Sep 2009 06:41:15 +0000 (+0000)
Subject: net_sched: make cls_ops->tcf_chain() optional
X-Git-Tag: v2.6.32-rc1~703^2~49
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=71ebe5e91947392bc276af713827eab12b6db8e4;p=pandora-kernel.git

net_sched: make cls_ops->tcf_chain() optional

Some qdiscs don't support attaching filters. Handle this centrally in
cls_api and return a proper errno code (EOPNOTSUPP) instead of EINVAL.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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