netdev - [net-next 08/15] net/mlx5: Enable 4 ports VF LAG

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Date: Tue,  6 Jun 2023 00:12:12 -0700
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Eric Dumazet <edumazet@...gle.com>
Cc: Saeed Mahameed <saeedm@...dia.com>,
	netdev@...r.kernel.org,
	Tariq Toukan <tariqt@...dia.com>,
	Leon Romanovsky <leonro@...dia.com>,
	linux-rdma@...r.kernel.org,
	Shay Drory <shayd@...dia.com>,
	Mark Bloch <mbloch@...dia.com>
Subject: [net-next 08/15] net/mlx5: Enable 4 ports VF LAG

From: Shay Drory <shayd@...dia.com>

Now, after all preparation are done, enable 4 ports VF LAG

Signed-off-by: Shay Drory <shayd@...dia.com>
Reviewed-by: Mark Bloch <mbloch@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c    | 4 ++--
 drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.c | 5 +++--
 drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.h | 2 +-
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
index 6ce71c42c755..ffd7e17b8ebe 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
@@ -711,7 +711,7 @@ int mlx5_deactivate_lag(struct mlx5_lag *ldev)
 	return 0;
 }
 
-#define MLX5_LAG_OFFLOADS_SUPPORTED_PORTS 2
+#define MLX5_LAG_OFFLOADS_SUPPORTED_PORTS 4
 bool mlx5_lag_check_prereq(struct mlx5_lag *ldev)
 {
 #ifdef CONFIG_MLX5_ESWITCH
@@ -737,7 +737,7 @@ bool mlx5_lag_check_prereq(struct mlx5_lag *ldev)
 		if (mlx5_eswitch_mode(ldev->pf[i].dev) != mode)
 			return false;
 
-	if (mode == MLX5_ESWITCH_OFFLOADS && ldev->ports != MLX5_LAG_OFFLOADS_SUPPORTED_PORTS)
+	if (mode == MLX5_ESWITCH_OFFLOADS && ldev->ports > MLX5_LAG_OFFLOADS_SUPPORTED_PORTS)
 		return false;
 #else
 	for (i = 0; i < ldev->ports; i++)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.c
index 8472bbb3cd58..78c94b22bdc0 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.c
@@ -75,13 +75,14 @@ struct mlx5_devcom *mlx5_devcom_register_device(struct mlx5_core_dev *dev)
 
 	if (!mlx5_core_is_pf(dev))
 		return NULL;
-	if (MLX5_CAP_GEN(dev, num_lag_ports) != MLX5_DEVCOM_PORTS_SUPPORTED)
+	if (MLX5_CAP_GEN(dev, num_lag_ports) > MLX5_DEVCOM_PORTS_SUPPORTED)
 		return NULL;
 
 	mlx5_dev_list_lock();
 	sguid0 = mlx5_query_nic_system_image_guid(dev);
 	list_for_each_entry(iter, &devcom_list, list) {
-		struct mlx5_core_dev *tmp_dev = NULL;
+		/* There is at least one device in iter */
+		struct mlx5_core_dev *tmp_dev;
 
 		idx = -1;
 		for (i = 0; i < MLX5_DEVCOM_PORTS_SUPPORTED; i++) {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.h b/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.h
index bb1970ba8730..d953a01b8eaa 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.h
@@ -6,7 +6,7 @@
 
 #include <linux/mlx5/driver.h>
 
-#define MLX5_DEVCOM_PORTS_SUPPORTED 2
+#define MLX5_DEVCOM_PORTS_SUPPORTED 4
 
 enum mlx5_devcom_components {
 	MLX5_DEVCOM_ESW_OFFLOADS,
-- 
2.40.1