From: Aya Levin <ayal@nvidia.com>
Date: Mon, 11 Apr 2022 09:27:39 +0300
Subject: net/mlx5e: Allow relaxed ordering over VFs
Patch-mainline: v5.19-rc1
Git-commit: f05ec8d9d0d62367b6e1f2cb50d7d2a45e7747cf
References: jsc#PED-1549

By PCI spec, the config space of the VF always report relaxed ordering
not supported while it inherits this property from its PF. Hence using
pcie_relaxed_ordering_enable(), always disables the relaxed ordering on
all VFs. Remove this check and rely on the firmware which queries the
config space of the PF and set the capability bit accordingly.

Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Marina Varshaver <marinav@nvidia.com>
Reviewed-by: Gal Shalom <galshalom@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/params.c |    3 +--
 drivers/net/ethernet/mellanox/mlx5/core/en_common.c |    5 ++---
 2 files changed, 3 insertions(+), 5 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
@@ -565,8 +565,7 @@ static void mlx5e_build_rx_cq_param(stru
 static u8 rq_end_pad_mode(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
 {
 	bool lro_en = params->packet_merge.type == MLX5E_PACKET_MERGE_LRO;
-	bool ro = pcie_relaxed_ordering_enabled(mdev->pdev) &&
-		MLX5_CAP_GEN(mdev, relaxed_ordering_write);
+	bool ro = MLX5_CAP_GEN(mdev, relaxed_ordering_write);
 
 	return ro && lro_en ?
 		MLX5_WQ_END_PAD_MODE_NONE : MLX5_WQ_END_PAD_MODE_ALIGN;
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_common.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_common.c
@@ -38,12 +38,11 @@
 
 void mlx5e_mkey_set_relaxed_ordering(struct mlx5_core_dev *mdev, void *mkc)
 {
-	bool ro_pci_enable = pcie_relaxed_ordering_enabled(mdev->pdev);
 	bool ro_write = MLX5_CAP_GEN(mdev, relaxed_ordering_write);
 	bool ro_read = MLX5_CAP_GEN(mdev, relaxed_ordering_read);
 
-	MLX5_SET(mkc, mkc, relaxed_ordering_read, ro_pci_enable && ro_read);
-	MLX5_SET(mkc, mkc, relaxed_ordering_write, ro_pci_enable && ro_write);
+	MLX5_SET(mkc, mkc, relaxed_ordering_read, ro_read);
+	MLX5_SET(mkc, mkc, relaxed_ordering_write, ro_write);
 }
 
 static int mlx5e_create_mkey(struct mlx5_core_dev *mdev, u32 pdn,