From: Guy Levi <guyle@mellanox.com>
Date: Tue, 4 Jul 2017 16:24:27 +0300
Subject: IB/mlx4: Expose RSS capabilities
Patch-mainline: v4.14-rc1
Git-commit: 6afff1c7152f6f0787d7ad5de2e124f8643f0a45
References: bsc#1046302 FATE#322945

As a final step to support RSS feature, expose the RSS capabilities in
query device verb.

It includes:
- Max rwq indirection tables.
- Max rwq indirection table size.
- Supported qp types.

Signed-off-by: Guy Levi <guyle@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/mlx4/main.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -556,8 +556,13 @@ static int mlx4_ib_query_device(struct i
 
 	if ((dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS) &&
 	    (mlx4_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET ||
-	     mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET))
+	     mlx4_ib_port_link_layer(ibdev, 2) == IB_LINK_LAYER_ETHERNET)) {
+		props->rss_caps.max_rwq_indirection_tables = props->max_qp;
+		props->rss_caps.max_rwq_indirection_table_size =
+			dev->dev->caps.max_rss_tbl_sz;
+		props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
 		props->max_wq_type_rq = props->max_qp;
+	}
 
 	if (!mlx4_is_slave(dev->dev))
 		err = mlx4_get_internal_clock_params(dev->dev, &clock_params);