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Improve query port functionality for representor port as below. 1. RoCE Qkey violation counters are not applicable for representor port. 2. Avoid setting gid_tbl_len twice for representor port. 3. Avoid setting ip_gids and IB_PORT_CM_SUP property for representor port as GID table is empty and CM support is not present in representor mode. Link: https://lore.kernel.org/r/20210203130133.4057329-4-leon@kernel.org Signed-off-by: Parav Pandit <parav@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>