diff options
| author |  Eran Ben Elisha <eranbe@mellanox.com>
| 2017-12-19 14:52:29 +0200 |
|---|---|---|
| committer |  Saeed Mahameed <saeedm@mellanox.com>
| 2018-01-19 22:41:33 +0200 |
| commit | 7ca560b5af70b5f578c9bf32c8fbfbd68d22252f (patch) | |
| tree | 1ea15c68151f7fc60fd605c929d55084541dedbc /drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h | |
| parent | net/mlx5e: Add Event Queue meta data info for TX timeout logs (diff) | |
| download | linux-7ca560b5af70b5f578c9bf32c8fbfbd68d22252f.tar.gz linux-7ca560b5af70b5f578c9bf32c8fbfbd68d22252f.tar.bz2 linux-7ca560b5af70b5f578c9bf32c8fbfbd68d22252f.zip | |
net/mlx5e: Poll event queue upon TX timeout before performing full channels recovery
Up until this patch, on every TX timeout we would try to do channels
recovery. However, in case of a lost interrupt for an EQ, the channel
associated to it cannot be recovered if reopened as it would never get
another interrupt on sent/received traffic, and eventually ends up with
another TX timeout (Restarting the EQ is not part of channel recovery).
This patch adds a mechanism for explicitly polling EQ in case of a TX
timeout in order to recover from a lost interrupt. If this is not the
case (no pending EQEs), perform a channels full recovery as usual.
Once a lost EQE is recovered, it triggers the NAPI to run and handle all
pending completions. This will free some budget in the bql (via calling
netdev_tx_completed_queue) or by clearing pending TXWQEs and waking up
the queue. One of the above actions will move the queue to be ready for
transmit again.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h index ff4a0b889a6f..b5a46c128b28 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h @@ -116,6 +116,7 @@ int mlx5_destroy_scheduling_element_cmd(struct mlx5_core_dev *dev, u8 hierarchy, int mlx5_wait_for_vf_pages(struct mlx5_core_dev *dev); u64 mlx5_read_internal_timer(struct mlx5_core_dev *dev); struct mlx5_eq *mlx5_eqn2eq(struct mlx5_core_dev *dev, int eqn); +u32 mlx5_eq_poll_irq_disabled(struct mlx5_eq *eq); void mlx5_cq_tasklet_cb(unsigned long data); int mlx5_query_pcam_reg(struct mlx5_core_dev *dev, u32 *pcam, u8 feature_group, |