[PATCH 6.6 055/122] net/mlx5: SF, Stop waiting for FW as teardown was called

Greg Kroah-Hartman
2024-04-15T14:34:52Z

From: Moshe Shemesh <moshe@nvidia.com>

[ Upstream commit 137cef6d55564fb687d12fbc5f85be43ff7b53a7 ]

When PF/VF teardown is called the driver sets the flag
MLX5_BREAK_FW_WAIT to stop waiting for FW loading and initializing. Same
should be applied to SF driver teardown to cut waiting time. On
mlx5_sf_dev_remove() set the flag before draining health WQ as recovery
flow may also wait for FW reloading while it is not relevant anymore.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Aya Levin <ayal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Stable-dep-of: c6e77aa9dd82 ("net/mlx5: Register devlink first under devlink lock")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../mellanox/mlx5/core/sf/dev/driver.c | 21 ++++++++++++-------
1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c b/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c
index 8fe82f1191bb9..69e270b5aa82d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/driver.c
@@ -69,24 +69,29 @@ static int mlx5_sf_dev_probe(struct auxiliary_device *adev, const struct auxilia
static void mlx5_sf_dev_remove(struct auxiliary_device *adev)
{
struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev);
- struct devlink *devlink = priv_to_devlink(sf_dev->mdev);
+ struct mlx5_core_dev *mdev = sf_dev->mdev;
+ struct devlink *devlink;

- mlx5_drain_health_wq(sf_dev->mdev);
+ devlink = priv_to_devlink(mdev);
+ set_bit(MLX5_BREAK_FW_WAIT, &mdev->intf_state);
+ mlx5_drain_health_wq(mdev);
devlink_unregister(devlink);
- if (mlx5_dev_is_lightweight(sf_dev->mdev))
- mlx5_uninit_one_light(sf_dev->mdev);
+ if (mlx5_dev_is_lightweight(mdev))
+ mlx5_uninit_one_light(mdev);
else
- mlx5_uninit_one(sf_dev->mdev);
- iounmap(sf_dev->mdev->iseg);
- mlx5_mdev_uninit(sf_dev->mdev);
+ mlx5_uninit_one(mdev);
+ iounmap(mdev->iseg);
+ mlx5_mdev_uninit(mdev);
mlx5_devlink_free(devlink);
}

static void mlx5_sf_dev_shutdown(struct auxiliary_device *adev)
{
struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev);
+ struct mlx5_core_dev *mdev = sf_dev->mdev;

- mlx5_unload_one(sf_dev->mdev, false);
+ set_bit(MLX5_BREAK_FW_WAIT, &mdev->intf_state);
+ mlx5_unload_one(mdev, false);
}

static const struct auxiliary_device_id mlx5_sf_dev_id_table[] = {
--
2.43.0