[PATCH net-next 04/15] net/mlx5: LAG, treat virt LAG as a software managed LAG

[Tariq Toukan <tariqt@nvidia.com>]

From: Shay Drory <shayd@nvidia.com>

mlx5_lag_is_sw_managed() (renamed from mlx5_lag_is_sw_lag()) marks the
LAG paths the driver builds in software - the LAG demux and vport-LAG -
which must skip the FW vport-LAG commands. A virt LAG is
software-managed like an SD LAG.

In the same manner, block multipath LAG over virt LAG as well.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c | 12 +++++++-----
 drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h |  1 +
 drivers/net/ethernet/mellanox/mlx5/core/lag/mp.c  |  4 ++--
 3 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
index 46f125d24f15..b2ac5c671ae6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
@@ -173,9 +173,11 @@ static u32 mlx5_lag_dev_group_id(struct mlx5_core_dev *dev)
 	return 0;
 }
 
-static int mlx5_lag_is_sw_lag(struct mlx5_core_dev *dev)
+bool mlx5_lag_is_sw_managed(struct mlx5_core_dev *dev)
 {
-	return mlx5_lag_is_sd(dev);
+	struct mlx5_lag *ldev = mlx5_lag_dev(dev);
+
+	return mlx5_lag_is_sd(dev) || (ldev && ldev->virt_lag);
 }
 
 int mlx5_cmd_create_vport_lag(struct mlx5_core_dev *dev)
@@ -184,7 +186,7 @@ int mlx5_cmd_create_vport_lag(struct mlx5_core_dev *dev)
 	struct mlx5_lag *ldev = mlx5_lag_dev(dev);
 	int ret;
 
-	if (mlx5_lag_is_sw_lag(dev)) {
+	if (mlx5_lag_is_sw_managed(dev)) {
 		if (!ldev)
 			return -ENODEV;
 
@@ -206,7 +208,7 @@ int mlx5_cmd_destroy_vport_lag(struct mlx5_core_dev *dev)
 	u32 in[MLX5_ST_SZ_DW(destroy_vport_lag_in)] = {};
 	struct mlx5_lag *ldev = mlx5_lag_dev(dev);
 
-	if (mlx5_lag_is_sw_lag(dev)) {
+	if (mlx5_lag_is_sw_managed(dev)) {
 		if (!ldev)
 			return 0;
 
@@ -1912,7 +1914,7 @@ int mlx5_lag_demux_init(struct mlx5_core_dev *dev,
 
 	xa_init(&pf->lag_demux_rules);
 
-	if (mlx5_lag_is_sw_lag(dev))
+	if (mlx5_lag_is_sw_managed(dev))
 		return mlx5_lag_demux_ft_fg_init(dev, ft_attr, pf);
 
 	return mlx5_lag_demux_fw_init(dev, ft_attr, pf);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
index dff04f40d8f3..872cc769297c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
@@ -229,6 +229,7 @@ bool mlx5_lag_check_prereq(struct mlx5_lag *ldev);
 void mlx5_virt_lag_mark_master(struct mlx5_lag *ldev);
 void mlx5_lag_clear_master(struct mlx5_lag *ldev);
 bool mlx5_lag_is_sd(struct mlx5_core_dev *dev);
+bool mlx5_lag_is_sw_managed(struct mlx5_core_dev *dev);
 int mlx5_lag_demux_init(struct mlx5_core_dev *dev,
 			struct mlx5_flow_table_attr *ft_attr);
 void mlx5_lag_demux_cleanup(struct mlx5_core_dev *dev);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/mp.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/mp.c
index 65c76bd748c6..2077fc5d80c7 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/mp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/mp.c
@@ -26,8 +26,8 @@ static bool mlx5_lag_multipath_check_prereq(struct mlx5_lag *ldev)
 	if (__mlx5_lag_is_active(ldev) && !__mlx5_lag_is_multipath(ldev))
 		return false;
 
-	if (__mlx5_lag_is_sd(ldev, mlx5_lag_pf(ldev, idx0)->dev) ||
-	    __mlx5_lag_is_sd(ldev, mlx5_lag_pf(ldev, idx1)->dev))
+	if (mlx5_lag_is_sw_managed(mlx5_lag_pf(ldev, idx0)->dev) ||
+	    mlx5_lag_is_sw_managed(mlx5_lag_pf(ldev, idx1)->dev))
 		return false;
 
 	if (ldev->ports > MLX5_LAG_MULTIPATH_OFFLOADS_SUPPORTED_PORTS)
-- 
2.44.0