IB/mlx5: Report inner RSS capability

Add missing inner RSS support capability as part of
the RSS supported fields.

In addition change MLX5_RX_HASH_INNER to 1UL << 31 in
order to define it as unsigned.

Fixes: 309fa3470fca ("IB/mlx5: Add support for RSS on the inner packet")
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/mlx5/main.c

@@ -680,7 +680,8 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
 						MLX5_RX_HASH_SRC_PORT_TCP |
 						MLX5_RX_HASH_DST_PORT_TCP |
 						MLX5_RX_HASH_SRC_PORT_UDP |
-						MLX5_RX_HASH_DST_PORT_UDP;
+						MLX5_RX_HASH_DST_PORT_UDP |
+						MLX5_RX_HASH_INNER;
 			resp.response_length += sizeof(resp.rss_caps);
 		}
 	} else {

include/uapi/rdma/mlx5-abi.h

@@ -307,7 +307,7 @@ enum mlx5_rx_hash_fields {
 	MLX5_RX_HASH_SRC_PORT_UDP	= 1 << 6,
 	MLX5_RX_HASH_DST_PORT_UDP	= 1 << 7,
 	/* Save bits for future fields */
-	MLX5_RX_HASH_INNER		= 1 << 31
+	MLX5_RX_HASH_INNER		= (1UL << 31),
 };
 
 struct mlx5_ib_create_qp_rss {