From feb393693316bd5de2c88a020f6ded51e3a4120b Mon Sep 17 00:00:00 2001 From: Bodong Wang Date: Tue, 12 Feb 2019 22:55:39 -0800 Subject: net/mlx5: Provide an alternative VF upper bound for ECPF ECPF doesn't support SR-IOV, but an ECPF E-Switch manager shall know the max VFs supported by its peer host PF in order to control those VF vports. The current driver implementation uses the total vfs quantity as provided by the pci sub-system for an upper bound of the VF vports the e-switch code needs to deal with. This obviously can't work as is on ECPF e-switch manager. For now, we use a hard coded value of 128 on such systems. Signed-off-by: Bodong Wang Reviewed-by: Or Gerlitz Signed-off-by: Saeed Mahameed --- include/linux/mlx5/driver.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 151563a12fc2..46e0aa52a58a 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -1088,7 +1088,16 @@ static inline bool mlx5_core_is_ecpf_esw_manager(struct mlx5_core_dev *dev) return dev->caps.embedded_cpu && MLX5_CAP_GEN(dev, eswitch_manager); } -#define MLX5_TOTAL_VPORTS(mdev) (1 + pci_sriov_get_totalvfs((mdev)->pdev)) +#define MLX5_HOST_PF_MAX_VFS (127u) +static inline u16 mlx5_core_max_vfs(struct mlx5_core_dev *dev) +{ + if (mlx5_core_is_ecpf_esw_manager(dev)) + return MLX5_HOST_PF_MAX_VFS; + else + return pci_sriov_get_totalvfs(dev->pdev); +} + +#define MLX5_TOTAL_VPORTS(mdev) (1 + mlx5_core_max_vfs(mdev)) #define MLX5_VPORT_MANAGER(mdev) \ (MLX5_CAP_GEN(mdev, vport_group_manager) && \ (MLX5_CAP_GEN(mdev, port_type) == MLX5_CAP_PORT_TYPE_ETH) && \ -- cgit v1.2.3