Commit 1d797935 authored by Parav Pandit's avatar Parav Pandit Committed by Saeed Mahameed
Browse files

net/mlx5: SF, Rely on hw table for SF devlink port allocation 



Supporting SF allocation is currently checked at two places:
(a) SF devlink port allocator and
(b) SF HW table handler.

Both layers are using HCA CAP to identify it using helper routine
mlx5_sf_supported() and mlx5_sf_max_functions().

Instead, rely on the HW table handler to check if SF is supported
or not.

Signed-off-by: default avatarParav Pandit <parav@nvidia.com>
Reviewed-by: default avatarVu Pham <vuhuong@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent 87bd418e

drivers/net/ethernet/mellanox/mlx5/core/sf/devlink.c

+2 −7
Original line number Diff line number Diff line
@@ -437,9 +437,6 @@ static int mlx5_sf_vhca_event(struct notifier_block *nb, unsigned long opcode, v 


static void mlx5_sf_table_enable(struct mlx5_sf_table *table)

{

	if (!mlx5_sf_max_functions(table->dev))

		return;



	init_completion(&table->disable_complete);

	refcount_set(&table->refcount, 1);

}
@@ -462,9 +459,6 @@ static void mlx5_sf_deactivate_all(struct mlx5_sf_table *table) 


static void mlx5_sf_table_disable(struct mlx5_sf_table *table)

{

	if (!mlx5_sf_max_functions(table->dev))

		return;



	if (!refcount_read(&table->refcount))

		return;
@@ -498,7 +492,8 @@ static int mlx5_sf_esw_event(struct notifier_block *nb, unsigned long event, voi 


static bool mlx5_sf_table_supported(const struct mlx5_core_dev *dev)

{

	return dev->priv.eswitch && MLX5_ESWITCH_MANAGER(dev) && mlx5_sf_supported(dev);

	return dev->priv.eswitch && MLX5_ESWITCH_MANAGER(dev) &&

	       mlx5_sf_hw_table_supported(dev);

}



int mlx5_sf_table_init(struct mlx5_core_dev *dev)

drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c

+6 −1
Original line number Diff line number Diff line
@@ -41,7 +41,7 @@ int mlx5_sf_hw_table_sf_alloc(struct mlx5_core_dev *dev, u32 usr_sfnum) 
	int err;

	int i;



	if (!table->max_local_functions)

	if (!table || !table->max_local_functions)

		return -EOPNOTSUPP;



	mutex_lock(&table->table_lock);
@@ -230,3 +230,8 @@ void mlx5_sf_hw_table_destroy(struct mlx5_core_dev *dev) 
	/* Dealloc SFs whose firmware event has been missed. */

	mlx5_sf_hw_dealloc_all(table);

}



bool mlx5_sf_hw_table_supported(const struct mlx5_core_dev *dev)

{

	return !!dev->priv.sf_hw_table;

}

drivers/net/ethernet/mellanox/mlx5/core/sf/priv.h

+1 −0
Original line number Diff line number Diff line
@@ -17,5 +17,6 @@ u16 mlx5_sf_sw_to_hw_id(const struct mlx5_core_dev *dev, u16 sw_id); 
int mlx5_sf_hw_table_sf_alloc(struct mlx5_core_dev *dev, u32 usr_sfnum);

void mlx5_sf_hw_table_sf_free(struct mlx5_core_dev *dev, u16 id);

void mlx5_sf_hw_table_sf_deferred_free(struct mlx5_core_dev *dev, u16 id);

bool mlx5_sf_hw_table_supported(const struct mlx5_core_dev *dev);



#endif