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net/mlx5: Report devlink health on FW issues 

Use devlink_health_report() to report any symptom of FW issue as FW
counter miss or new health syndrome.
The FW issues detected in mlx5 during poll_health which is called in
timer atomic context and so health work queue is used to schedule the
reports.

Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Moshe Shemesh 2018-12-11 16:09:56 +02:00 committed by Saeed Mahameed
parent fd1483fe1f
commit d1bf0e2cc4
2 changed files with 35 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/net/ethernet/mellanox/mlx5/core/health.c
View File

@ -515,6 +515,29 @@ mlx5_fw_reporter_dump(struct devlink_health_reporter *reporter,
return mlx5_fw_tracer_get_saved_traces_objects(dev->tracer, fmsg);
}
static void mlx5_fw_reporter_err_work(struct work_struct *work)
{
struct mlx5_fw_reporter_ctx fw_reporter_ctx;
struct mlx5_core_health *health;
health = container_of(work, struct mlx5_core_health, report_work);
if (IS_ERR_OR_NULL(health->fw_reporter))
return;
fw_reporter_ctx.err_synd = health->synd;
fw_reporter_ctx.miss_counter = health->miss_counter;
if (fw_reporter_ctx.err_synd) {
devlink_health_report(health->fw_reporter,
"FW syndrom reported", &fw_reporter_ctx);
return;
}
if (fw_reporter_ctx.miss_counter)
devlink_health_report(health->fw_reporter,
"FW miss counter reported",
&fw_reporter_ctx);
}
static const struct devlink_health_reporter_ops mlx5_fw_reporter_ops = {
.name = "fw",
.diagnose = mlx5_fw_reporter_diagnose,
@ -572,7 +595,9 @@ static void poll_health(struct timer_list *t)
{
struct mlx5_core_dev *dev = from_timer(dev, t, priv.health.timer);
struct mlx5_core_health *health = &dev->priv.health;
struct health_buffer __iomem *h = health->health;
u32 fatal_error;
u8 prev_synd;
u32 count;
if (dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR)
@ -588,8 +613,14 @@ static void poll_health(struct timer_list *t)
if (health->miss_counter == MAX_MISSES) {
mlx5_core_err(dev, "device's health compromised - reached miss count\n");
print_health_info(dev);
queue_work(health->wq, &health->report_work);
}
prev_synd = health->synd;
health->synd = ioread8(&h->synd);
if (health->synd && health->synd != prev_synd)
queue_work(health->wq, &health->report_work);
fatal_error = check_fatal_sensors(dev);
if (fatal_error && !health->fatal_error) {
@ -639,6 +670,7 @@ void mlx5_drain_health_wq(struct mlx5_core_dev *dev)
spin_lock_irqsave(&health->wq_lock, flags);
set_bit(MLX5_DROP_NEW_HEALTH_WORK, &health->flags);
spin_unlock_irqrestore(&health->wq_lock, flags);
cancel_work_sync(&health->report_work);
cancel_work_sync(&health->work);
}
@ -675,6 +707,7 @@ int mlx5_health_init(struct mlx5_core_dev *dev)
return -ENOMEM;
spin_lock_init(&health->wq_lock);
INIT_WORK(&health->work, health_care);
INIT_WORK(&health->report_work, mlx5_fw_reporter_err_work);
mlx5_fw_reporter_create(dev);

3
include/linux/mlx5/driver.h
View File

@ -435,7 +435,7 @@ struct mlx5_core_health {
struct timer_list timer;
u32 prev;
int miss_counter;
bool sick;
u8 synd;
u32 fatal_error;
u32 crdump_size;
/* wq spinlock to synchronize draining */
@ -443,6 +443,7 @@ struct mlx5_core_health {
struct workqueue_struct *wq;
unsigned long flags;
struct work_struct work;
struct work_struct report_work;
struct delayed_work recover_work;
struct devlink_health_reporter *fw_reporter;
};