From 51d138c2610a236c1ed0059d034ee4c74f452b86 Mon Sep 17 00:00:00 2001
From: Shay Drory <shayd@nvidia.com>
Date: Mon, 23 Nov 2020 08:39:10 +0200
Subject: [PATCH] net/mlx5: Fix health error state handling
Currently, when we discover a fatal error, we are queueing a work that
will wait for a lock in order to enter the device to error state.
Meanwhile, FW commands are still being processed, and gets timeouts.
This can block the driver for few minutes before the work will manage
to get the lock and enter to error state.
Setting the device to error state before queueing health work, in order
to avoid FW commands being processed while the work is waiting for the
lock.
Fixes: c1d4d2e92ad6 ("net/mlx5: Avoid calling sleeping function by the health poll thread")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
.../net/ethernet/mellanox/mlx5/core/health.c | 22 ++++++++++++-------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/health.c b/drivers/net/ethernet/mellanox/mlx5/core/health.c
index 54523bed16cd3..0c32c485eb588 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/health.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/health.c
@@ -190,6 +190,16 @@ static bool reset_fw_if_needed(struct mlx5_core_dev *dev)
return true;
}
+static void enter_error_state(struct mlx5_core_dev *dev, bool force)
+{
+ if (mlx5_health_check_fatal_sensors(dev) || force) { /* protected state setting */
+ dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR;
+ mlx5_cmd_flush(dev);
+ }
+
+ mlx5_notifier_call_chain(dev->priv.events, MLX5_DEV_EVENT_SYS_ERROR, (void *)1);
+}
+
void mlx5_enter_error_state(struct mlx5_core_dev *dev, bool force)
{
bool err_detected = false;
@@ -208,12 +218,7 @@ void mlx5_enter_error_state(struct mlx5_core_dev *dev, bool force)
goto unlock;
}
- if (mlx5_health_check_fatal_sensors(dev) || force) { /* protected state setting */
- dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR;
- mlx5_cmd_flush(dev);
- }
-
- mlx5_notifier_call_chain(dev->priv.events, MLX5_DEV_EVENT_SYS_ERROR, (void *)1);
+ enter_error_state(dev, force);
unlock:
mutex_unlock(&dev->intf_state_mutex);
}
@@ -613,7 +618,7 @@ static void mlx5_fw_fatal_reporter_err_work(struct work_struct *work)
priv = container_of(health, struct mlx5_priv, health);
dev = container_of(priv, struct mlx5_core_dev, priv);
- mlx5_enter_error_state(dev, false);
+ enter_error_state(dev, false);
if (IS_ERR_OR_NULL(health->fw_fatal_reporter)) {
if (mlx5_health_try_recover(dev))
mlx5_core_err(dev, "health recovery failed\n");
@@ -707,8 +712,9 @@ static void poll_health(struct timer_list *t)
mlx5_core_err(dev, "Fatal error %u detected\n", fatal_error);
dev->priv.health.fatal_error = fatal_error;
print_health_info(dev);
+ dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR;
mlx5_trigger_health_work(dev);
- goto out;
+ return;
}
count = ioread32be(health->health_counter);
--
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