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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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16
include/net/devlink.h
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@@ -498,6 +498,14 @@ struct devlink_info_req;
typedef void devlink_snapshot_data_dest_t(const void *data);
/**
* struct devlink_region_ops - Region operations
* @name: region name
*/
struct devlink_region_ops {
const char *name;
};
struct devlink_fmsg;
struct devlink_health_reporter;
@@ -963,10 +971,10 @@ void devlink_port_param_value_changed(struct devlink_port *devlink_port,
u32 param_id);
void devlink_param_value_str_fill(union devlink_param_value *dst_val,
const char *src);
struct devlink_region *devlink_region_create(struct devlink *devlink,
const char *region_name,
u32 region_max_snapshots,
u64 region_size);
struct devlink_region *
devlink_region_create(struct devlink *devlink,
const struct devlink_region_ops *ops,
u32 region_max_snapshots, u64 region_size);
void devlink_region_destroy(struct devlink_region *region);
u32 devlink_region_snapshot_id_get(struct devlink *devlink);
int devlink_region_snapshot_create(struct devlink_region *region,