[ovs-git] Open vSwitch: netdev-linux: Ref and unref the netdev_linux_cache_notifier for taps too. (master)

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commit 1f6e0fbd81b8f1786be0232f83792170a9f476d3
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=1f6e0fbd81b8f1786be0232f83792170a9f476d3
Author: Ben Pfaff <blp at nicira.com>
		
netdev-linux: Ref and unref the netdev_linux_cache_notifier for taps too.
		
netdev-linux uses netdev_linux_cache_notifier to flush its cache when the
kernel notifies userspace that a particular network device's configuration
or status has changed.  This is as applicable to tap devices as to system
and internal devices, so we should create and destroy the notifier for
tap devices also.

I doubt that in practice it's possible to run ovs-vswitchd without having
a non-tap device open, at least with the kernel datapath, because the
local port for a bridge is not a tap device, so there should be no need to
backport this to older versions.

Reported-by: Gaetano Catalli <gaetano.catalli at gmail.com>


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Summary of changes:
 lib/netdev-linux.c |   61 +++++++++++++++++++++++++++++++++++-----------------
 1 files changed, 41 insertions(+), 20 deletions(-)


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