Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit acab721b authored by Mohamad Haj Yahia's avatar Mohamad Haj Yahia Committed by David S. Miller
Browse files

net/mlx5: Implement SRIOV attach/detach flows 



Needed for lightweight and modular internal/pci error handling.
Implement sriov attach function which enables pre-saved number of vfs on
the device side.
Implement sriov detach function which disable the current vfs on the
device side.
Init/cleanup function only handles sriov software context allocation and
destruction.

Signed-off-by: default avatarMohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 59211bd3

drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h

+2 −0
Original line number Diff line number Diff line
@@ -91,6 +91,8 @@ void mlx5_enter_error_state(struct mlx5_core_dev *dev); 
void mlx5_disable_device(struct mlx5_core_dev *dev);

int mlx5_sriov_init(struct mlx5_core_dev *dev);

void mlx5_sriov_cleanup(struct mlx5_core_dev *dev);

int mlx5_sriov_attach(struct mlx5_core_dev *dev);

void mlx5_sriov_detach(struct mlx5_core_dev *dev);

int mlx5_core_sriov_configure(struct pci_dev *dev, int num_vfs);

bool mlx5_sriov_is_enabled(struct mlx5_core_dev *dev);

int mlx5_core_enable_hca(struct mlx5_core_dev *dev, u16 func_id);

drivers/net/ethernet/mellanox/mlx5/core/sriov.c

+21 −8
Original line number Diff line number Diff line
@@ -188,6 +188,25 @@ int mlx5_core_sriov_configure(struct pci_dev *pdev, int num_vfs) 
	return err ? err : num_vfs;

}



int mlx5_sriov_attach(struct mlx5_core_dev *dev)

{

	struct mlx5_core_sriov *sriov = &dev->priv.sriov;



	if (!mlx5_core_is_pf(dev) || !sriov->num_vfs)

		return 0;



	/* If sriov VFs exist in PCI level, enable them in device level */

	return mlx5_device_enable_sriov(dev, sriov->num_vfs);

}



void mlx5_sriov_detach(struct mlx5_core_dev *dev)

{

	if (!mlx5_core_is_pf(dev))

		return;



	mlx5_device_disable_sriov(dev);

}



int mlx5_sriov_init(struct mlx5_core_dev *dev)

{

	struct mlx5_core_sriov *sriov = &dev->priv.sriov;
@@ -203,12 +222,7 @@ int mlx5_sriov_init(struct mlx5_core_dev *dev) 
	if (!sriov->vfs_ctx)

		return -ENOMEM;



	/* If sriov VFs exist in PCI level, enable them in device level */

	if (!sriov->num_vfs)

		return 0;



	mlx5_device_enable_sriov(dev, sriov->num_vfs);

	return 0;

	return mlx5_sriov_attach(dev);

}



void mlx5_sriov_cleanup(struct mlx5_core_dev *dev)
@@ -217,7 +231,6 @@ void mlx5_sriov_cleanup(struct mlx5_core_dev *dev) 


	if (!mlx5_core_is_pf(dev))

		return;



	mlx5_device_disable_sriov(dev);

	mlx5_sriov_detach(dev);

	kfree(sriov->vfs_ctx);

}