On 4/25/2019 4:22 PM, David Marchand wrote:
At the moment, a malicious guest might negotiate VIRTIO_NET_F_MQ and
!VIRTIO_NET_F_MQ in a loop which would be seen as qp_num going from 1 to
n and n to 1 continuously, triggering datapath reconfigurations at each
transition.
Limit this by only reconfiguring on increased qp_num.
The previous patch reduced the observed cost of polling disabled queues,
so the only cost is memory.
Co-authored-by: Ilya Maximets <[email protected]>
Signed-off-by: Ilya Maximets <[email protected]>
Signed-off-by: David Marchand <[email protected]>
Acked-by: Kevin Traynor <[email protected]>
Seems fair enough. Pushed to master.
Thanks
Ian
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