From: Cyrill Gorcunov <gorcunov@openvz.org>
Date: Sat, 3 Nov 2012 09:30:34 +0000 (+0000)
Subject: net: inet_diag -- Return error code if protocol handler is missed
X-Git-Tag: v3.7-rc5~1^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cacb6ba0f36ab14a507f4ee7697e8332899015d2;p=pandora-kernel.git

net: inet_diag -- Return error code if protocol handler is missed

We've observed that in case if UDP diag module is not
supported in kernel the netlink returns NLMSG_DONE without
notifying a caller that handler is missed.

This patch makes __inet_diag_dump to return error code instead.

So as example it become possible to detect such situation
and handle it gracefully on userspace level.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
CC: David Miller <davem@davemloft.net>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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