From: Gavi Teitz <gavi@mellanox.com>
Date: Sun, 19 Aug 2018 15:01:13 +0300
Subject: net/mlx5e: Expose function for building RSS params
Patch-mainline: v4.20-rc1
Git-commit: 3edc0159c01406a21a8c850b268d1ac8fb2b4c66
References: bsc#1103990 FATE#326006

Towards enabling RSS for the vport representors, extract the
procedure for building a device's RSS params, and expose the
function.

Signed-off-by: Gavi Teitz <gavi@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlx5/core/en.h      |    1 +
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c |   13 +++++++++----
 2 files changed, 10 insertions(+), 4 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -969,6 +969,7 @@ void mlx5e_build_nic_params(struct mlx5_
 			    u16 max_channels, u16 mtu);
 void mlx5e_build_rq_params(struct mlx5_core_dev *mdev,
 			   struct mlx5e_params *params);
+void mlx5e_build_rss_params(struct mlx5e_params *params);
 u8 mlx5e_params_calculate_tx_min_inline(struct mlx5_core_dev *mdev);
 void mlx5e_rx_dim_work(struct work_struct *work);
 void mlx5e_tx_dim_work(struct work_struct *work);
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -4497,6 +4497,14 @@ void mlx5e_build_rq_params(struct mlx5_c
 	mlx5e_init_rq_type_params(mdev, params);
 }
 
+void mlx5e_build_rss_params(struct mlx5e_params *params)
+{
+	params->rss_hfunc = ETH_RSS_HASH_XOR;
+	netdev_rss_key_fill(params->toeplitz_hash_key, sizeof(params->toeplitz_hash_key));
+	mlx5e_build_default_indir_rqt(params->indirection_rqt,
+				      MLX5E_INDIR_RQT_SIZE, params->num_channels);
+}
+
 void mlx5e_build_nic_params(struct mlx5_core_dev *mdev,
 			    struct mlx5e_params *params,
 			    u16 max_channels, u16 mtu)
@@ -4545,10 +4553,7 @@ void mlx5e_build_nic_params(struct mlx5_
 	params->tx_min_inline_mode = mlx5e_params_calculate_tx_min_inline(mdev);
 
 	/* RSS */
-	params->rss_hfunc = ETH_RSS_HASH_XOR;
-	netdev_rss_key_fill(params->toeplitz_hash_key, sizeof(params->toeplitz_hash_key));
-	mlx5e_build_default_indir_rqt(params->indirection_rqt,
-				      MLX5E_INDIR_RQT_SIZE, max_channels);
+	mlx5e_build_rss_params(params);
 }
 
 static void mlx5e_build_nic_netdev_priv(struct mlx5_core_dev *mdev,