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devlink: prepare to support region operations

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Modify the devlink region code in preparation for adding new operations
on regions.

Create a devlink_region_ops structure, and move the name pointer from
within the devlink_region structure into the ops structure (similar to
the devlink_health_reporter_ops).

This prepares the regions to enable support of additional operations in
the future such as requesting snapshots, or accessing the region
directly without a snapshot.

In order to re-use the constant strings in the mlx4 driver their
declaration must be changed to 'const char * const' to ensure the
compiler realizes that both the data and the pointer cannot change.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jacob Keller
2020-03-26 11:37:08 -07:00
committed by David S. Miller
parent 6739ce8591
commit e893768179
4 changed files with 40 additions and 20 deletions
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6
drivers/net/netdevsim/dev.c
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@@ -340,11 +340,15 @@ static void nsim_devlink_param_load_driverinit_values(struct devlink *devlink)
#define NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX 16
static const struct devlink_region_ops dummy_region_ops = {
.name = "dummy",
};
static int nsim_dev_dummy_region_init(struct nsim_dev *nsim_dev,
struct devlink *devlink)
{
nsim_dev->dummy_region =
devlink_region_create(devlink, "dummy",
devlink_region_create(devlink, &dummy_region_ops,
NSIM_DEV_DUMMY_REGION_SNAPSHOT_MAX,
NSIM_DEV_DUMMY_REGION_SIZE);
return PTR_ERR_OR_ZERO(nsim_dev->dummy_region);