Up to ConnectX-7 setting mkey relaxed ordering read/write attributes
by UMR is not supported. ConnectX-7 supports this option, which is
indicated by two new HCA capabilities - relaxed_ordering_write_umr
and relaxed_ordering_read_umr.
Signed-off-by: NMeir Lichtinger <meirl@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>