From: "Liu, Changcheng" <jerrliu@nvidia.com>
Date: Wed, 7 Sep 2022 16:36:29 -0700
Subject: net/mlx5: detect and enable bypass port select flow table
Patch-mainline: v6.1-rc1
Git-commit: 90b1df74b56407ed43840b4db5b07aea0b7a8152
References: jsc#PED-1549
Use port selection capability port_select_flow_table_bypass
bit to detect and enable explicit port affinity even when
in lag hash mode.
Signed-off-by: Liu, Changcheng <jerrliu@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlx5/core/main.c | 34 +++++++++++++++++++++++++
1 file changed, 34 insertions(+)
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -671,6 +671,33 @@ static int handle_hca_cap_roce(struct ml
return err;
}
+static int handle_hca_cap_port_selection(struct mlx5_core_dev *dev,
+ void *set_ctx)
+{
+ void *set_hca_cap;
+ int err;
+
+ if (!MLX5_CAP_GEN(dev, port_selection_cap))
+ return 0;
+
+ err = mlx5_core_get_caps(dev, MLX5_CAP_PORT_SELECTION);
+ if (err)
+ return err;
+
+ if (MLX5_CAP_PORT_SELECTION(dev, port_select_flow_table_bypass) ||
+ !MLX5_CAP_PORT_SELECTION_MAX(dev, port_select_flow_table_bypass))
+ return 0;
+
+ set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx, capability);
+ memcpy(set_hca_cap, dev->caps.hca[MLX5_CAP_PORT_SELECTION]->cur,
+ MLX5_ST_SZ_BYTES(port_selection_cap));
+ MLX5_SET(port_selection_cap, set_hca_cap, port_select_flow_table_bypass, 1);
+
+ err = set_caps(dev, set_ctx, MLX5_SET_HCA_CAP_OP_MODE_PORT_SELECTION);
+
+ return err;
+}
+
static int set_hca_cap(struct mlx5_core_dev *dev)
{
int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in);
@@ -715,6 +742,13 @@ static int set_hca_cap(struct mlx5_core_
goto out;
}
+ memset(set_ctx, 0, set_sz);
+ err = handle_hca_cap_port_selection(dev, set_ctx);
+ if (err) {
+ mlx5_core_err(dev, "handle_hca_cap_port_selection failed\n");
+ goto out;
+ }
+
out:
kfree(set_ctx);
return err;