Willem de Bruijn 133bbb18ab
virtio-net: per-queue RPS config ...
On multiqueue network devices, RPS maps are configured independently
for each receive queue through /sys/class/net/$DEV/queues/rx-*.
On virtio-net currently all packets use the map from rx-0, because the
real rx queue is not known at time of map lookup by get_rps_cpu.
Call skb_record_rx_queue in the driver rx path to make lookup work.
Recording the receive queue has ramifications beyond RPS, such as in
sticky load balancing decisions for sockets (skb_tx_hash) and XPS.
Reported-by: Mark Hlady <mhlady@google.com >
Signed-off-by: Willem de Bruijn <willemb@google.com >
Acked-by: Jason Wang <jasowang@redhat.com >
Acked-by: Michael S. Tsirkin <mst@redhat.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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133bbb18ab