virtio_net: Add a lock for per queue RX coalesce
Once the RTNL locking around the control buffer is removed there can be contention on the per queue RX interrupt coalescing data. Use a mutex per queue. A mutex is required because virtnet_send_command can sleep. Signed-off-by:Daniel Jurgens <danielj@nvidia.com> Reviewed-by:
Heng Qi <hengqi@linux.alibaba.com> Tested-by:
Heng Qi <hengqi@linux.alibaba.com> Acked-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
Paolo Abeni <pabeni@redhat.com>
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