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HW can implement UMR wqe re-transmission in various ways. Thus, add HCA cap to distinguish the needed fence for UMR to make sure that the wqe wouldn't fail on mkey checks. Signed-off-by: Max Gurtovoy <[email protected]> Acked-by: Leon Romanovsky <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Signed-off-by: Doug Ledford <[email protected]>