net: make default_rps_mask a per netns attribute
That really was meant to be a per netns attribute from the beginning. The idea is that once proper isolation is in place in the main namespace, additional demux in the child namespaces will be redundant. Let's make child netns default rps mask empty by default. To avoid bloating the netns with a possibly large cpumask, allocate it on-demand during the first write operation. Signed-off-by:Paolo Abeni <pabeni@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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