fm10k: Limit dma sync of RX buffers to actual packet size
On packet RX, we perform a dma sync for cpu before passing the packet up. Here we limit that sync to the actual length of the incoming packet, rather than always syncing the entire buffer. Signed-off-by: NScott Peterson <scott.d.peterson@intel.com> Signed-off-by: NJacob Keller <jacob.e.keller@intel.com> Tested-by: NKrishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
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