On Sun, Aug 16, 2020 at 09:43:11PM +0200, Andrew Lunn wrote:
> Allow DSA drivers to make use of devlink regions, via simple wrappers.
>
> Signed-off-by: Andrew Lunn <and...@lunn.ch>
> ---
> include/net/dsa.h | 6 ++++++
> net/dsa/dsa.c | 16 ++++++++++++++++
> 2 files changed, 22 insertions(+)
>
> diff --git a/include/net/dsa.h b/include/net/dsa.h
> index 63ff6f717307..8963440ec7f8 100644
> --- a/include/net/dsa.h
> +++ b/include/net/dsa.h
> @@ -660,6 +660,12 @@ void dsa_devlink_resource_occ_get_register(struct
> dsa_switch *ds,
> void *occ_get_priv);
> void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds,
> u64 resource_id);
> +struct devlink_region *
> +dsa_devlink_region_create(struct dsa_switch *ds,
> + const struct devlink_region_ops *ops,
> + u32 region_max_snapshots, u64 region_size);
> +void dsa_devlink_region_destroy(struct devlink_region *region);
> +
> struct dsa_port *dsa_port_from_netdev(struct net_device *netdev);
>
> struct dsa_devlink_priv {
> diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
> index 86351da4e202..fea2efe5fe68 100644
> --- a/net/dsa/dsa.c
> +++ b/net/dsa/dsa.c
> @@ -412,6 +412,22 @@ void dsa_devlink_resource_occ_get_unregister(struct
> dsa_switch *ds,
> }
> EXPORT_SYMBOL_GPL(dsa_devlink_resource_occ_get_unregister);
>
> +struct devlink_region *
> +dsa_devlink_region_create(struct dsa_switch *ds,
> + const struct devlink_region_ops *ops,
> + u32 region_max_snapshots, u64 region_size)
> +{
> + return devlink_region_create(ds->devlink, ops, region_max_snapshots,
> + region_size);
> +}
> +EXPORT_SYMBOL_GPL(dsa_devlink_region_create);
> +
> +void dsa_devlink_region_destroy(struct devlink_region *region)
> +{
> + devlink_region_destroy(region);
> +}
> +EXPORT_SYMBOL_GPL(dsa_devlink_region_destroy);
> +
> struct dsa_port *dsa_port_from_netdev(struct net_device *netdev)
> {
> if (!netdev || !dsa_slave_dev_check(netdev))
> --
> 2.28.0
>
Could we perhaps open-code these from the drivers themselves? There's
hardly any added value in DSA providing a "helper" for creation of
devlink resources (regions, shared buffers, etc).
Take the ocelot/felix driver for example. It is a DSA driver whose core
functionality is provided by drivers/net/ethernet/mscc/ocelot*.c, which
is non-DSA code. If it were to implement devlink regions, presumably
that code would live in drivers/net/ethernet/mscc/ and not in
drivers/net/dsa/.
Thanks,
-Vladimir
