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devlink: Add support for direct reporter health state update

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It is possible that a reporter state will be updated due to a recover flow
which is not triggered by a devlink health related operation, but as a side
effect of some other operation in the system.

Expose devlink health API for a direct update of a reporter status.

Move devlink_health_reporter_state enum definition to devlink.h so it could
be used from drivers as a parameter of devlink_health_reporter_state_update.

In addition, add trace_devlink_health_reporter_state_update to provide user
notification for reporter state change.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eran Ben Elisha 2019-03-03 10:57:30 +02:00 • committed by David S. Miller
parent a0a21adb6a
commit 3167b27a7d
3 changed files with 62 additions and 5 deletions
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22
net/core/devlink.c
View file

@ -4409,11 +4409,6 @@ struct devlink_health_reporter {
u64 last_recovery_ts;
};
enum devlink_health_reporter_state {
DEVLINK_HEALTH_REPORTER_STATE_HEALTHY,
DEVLINK_HEALTH_REPORTER_STATE_ERROR,
};
void *
devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
{
@ -4498,6 +4493,23 @@ devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
}
EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
void
devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
enum devlink_health_reporter_state state)
{
if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
return;
if (reporter->health_state == state)
return;
reporter->health_state = state;
trace_devlink_health_reporter_state_update(reporter->devlink,
reporter->ops->name, state);
}
EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
static int
devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
void *priv_ctx)