virtio-net: make rx buf size estimation works for XDP
We don't update ewma rx buf size in the case of XDP. This will lead underestimation of rx buf size which causes host to produce more than one buffers. This will greatly increase the possibility of XDP page linearization. Cc: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: NJason Wang <jasowang@redhat.com> Acked-by: NJohn Fastabend <john.r.fastabend@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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