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net/mlx5: Handle SW reset of FW in error flow

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New mlx5 adapters allow the driver to reset the FW in the event of an
error, this action called "SW Reset". When an SW reset is issued on any
PF all PFs enter reset state which is a recoverable condition. The
existing recovery flow was designed to allow the recovery of a VF after
a PF driver reload. This patch adds the sw reset to the NIC states
as a preparation for sw reset handling.

When a software reset is issued the following occurs:
1. The NIC interface mode is set to 7 while the reset is in progress.
2. Once the reset completes the NIC interface mode is set to 1.

Signed-off-by: Feras Daoud <ferasda@mellanox.com>
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Feras Daoud 2018-11-12 15:23:02 +02:00 • committed by Saeed Mahameed
parent 8b9d8baae1
commit 63cbc552ee
5 changed files with 48 additions and 65 deletions
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2
include/linux/mlx5/driver.h
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@ -435,6 +435,7 @@ struct mlx5_core_health {
u32 prev;
int miss_counter;
bool sick;
u32 fatal_error;
u32 crdump_size;
/* wq spinlock to synchronize draining */
spinlock_t wq_lock;
@ -906,7 +907,6 @@ void mlx5_start_health_poll(struct mlx5_core_dev *dev);
void mlx5_stop_health_poll(struct mlx5_core_dev *dev, bool disable_health);
void mlx5_drain_health_wq(struct mlx5_core_dev *dev);
void mlx5_trigger_health_work(struct mlx5_core_dev *dev);
void mlx5_drain_health_recovery(struct mlx5_core_dev *dev);
int mlx5_buf_alloc_node(struct mlx5_core_dev *dev, int size,
struct mlx5_frag_buf *buf, int node);
int mlx5_buf_alloc(struct mlx5_core_dev *dev,