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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 <maxg@mellanox.com> Acked-by: Leon Romanovsky <leon@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Doug Ledford <dledford@redhat.com>