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devlink: make sure driver does not read updated driverinit param before reload

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The driverinit param purpose is to serve the driver during init/reload
time to provide a value, either default or set by user.

Make sure that driver does not read value updated by user before the
reload is performed. Hold the new value in a separate struct and switch
it during reload.

Note that this is required to be eventually possible to call
devl_param_driverinit_value_get() without holding instance lock.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko
2023-02-10 11:01:26 +01:00
committed by David S. Miller
parent fa2f921f3b
commit afd888c3e1
4 changed files with 32 additions and 4 deletions
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3
net/devlink/devl_internal.h
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@@ -189,6 +189,9 @@ static inline bool devlink_reload_supported(const struct devlink_ops *ops)
return ops->reload_down && ops->reload_up;
}
/* Params */
void devlink_params_driverinit_load_new(struct devlink *devlink);
/* Resources */
struct devlink_resource;
int devlink_resources_validate(struct devlink *devlink,