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net/mlx5e: PFC stall prevention support

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Implement set/get functions to configure PFC stall prevention
timeout by tunables api through ethtool.
By default the stall prevention timeout is configured to 8 sec.
Timeout range is: 80-8000 msec.

Enabling stall prevention with the auto timeout will set
the timeout to 100 msec.

Signed-off-by: Inbar Karmy <inbark@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Inbar Karmy
2017-11-20 18:06:20 +02:00
committed by Saeed Mahameed
parent e1577c1c88
commit 2afa609f5c
4 changed files with 132 additions and 12 deletions
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6
include/linux/mlx5/port.h
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@@ -151,6 +151,12 @@ int mlx5_set_port_pfc(struct mlx5_core_dev *dev, u8 pfc_en_tx, u8 pfc_en_rx);
int mlx5_query_port_pfc(struct mlx5_core_dev *dev, u8 *pfc_en_tx,
u8 *pfc_en_rx);
int mlx5_set_port_stall_watermark(struct mlx5_core_dev *dev,
u16 stall_critical_watermark,
u16 stall_minor_watermark);
int mlx5_query_port_stall_watermark(struct mlx5_core_dev *dev,
u16 *stall_critical_watermark, u16 *stall_minor_watermark);
int mlx5_max_tc(struct mlx5_core_dev *mdev);
int mlx5_set_port_prio_tc(struct mlx5_core_dev *mdev, u8 *prio_tc);