From: Francesco Ruggeri <fruggeri@arista.com>
Date: Wed, 17 Sep 2014 17:40:44 +0000 (-0700)
Subject: net: allow macvlans to move to net namespace
X-Git-Tag: fixes-for-v3.18-merge-window~87^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d0162e7a33d3710b9604e7c68c0f31f5c457428;p=pandora-kernel.git

net: allow macvlans to move to net namespace

I cannot move a macvlan interface created on top of a bonding interface
to a different namespace:

% ip netns add dummy0
% ip link add link bond0 mac0 type macvlan
% ip link set mac0 netns dummy0
RTNETLINK answers: Invalid argument
%

The problem seems to be that commit f9399814927a ("bonding: Don't allow
bond devices to change network namespaces.") sets NETIF_F_NETNS_LOCAL
on bonding interfaces, and commit 797f87f83b60 ("macvlan: fix netdev
feature propagation from lower device") causes macvlan interfaces
to inherit its features from the lower device.

NETIF_F_NETNS_LOCAL should not be inherited from the lower device
by a macvlan.
Patch tested on 3.16.

Signed-off-by: Francesco Ruggeri <fruggeri@arista.com>
Acked-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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