Re: [PATCH v2 18/20] drbd: add the "drbd2" genl family

[Christoph Böhmwalder]

On 10/6/26 17:46, Christoph Böhmwalder wrote:
> DRBD 9's utilities need the multi-peer administration model that the
> version-1 wire cannot express: peers identified by node id, several
> paths per connection, per-peer-device options and statistics, and
> notifications for all of those. Rather than bump the "drbd" family
> and break every existing drbd-utils, add a second family, "drbd2",
> written as a YNL specification in Documentation/netlink/specs/ and
> following current generic netlink conventions: strict policies with
> ranges, nested objects, split do/dump ops, extended ACKs for errors,
> and a proper uapi header.
>
> drbd2_nl_gen.[ch] and include/uapi/linux/drbd2.h are generated from
> the spec with tools/net/ynl and are not edited by hand.
> drbd_nl_drbd2.c is the struct drbd_nl_dialect adapter for the family.
> Both families are registered by the same driver and operate on the
> same objects; a resource created through either is visible through
> both, within what each wire format can express. drbd2 is always
> registered, so with DRBD_COMPAT_84=n it is the only family.
>
> Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@xxxxxxxxxx>
> ---
>   Documentation/netlink/specs/drbd2.yaml | 2476 +++++++++++++++++++++++
>   drivers/block/drbd/Kconfig             |    6 +
>   drivers/block/drbd/Makefile            |    1 +
>   drivers/block/drbd/drbd2_nl_gen.c      |  748 +++++++
>   drivers/block/drbd/drbd2_nl_gen.h      |  107 +
>   drivers/block/drbd/drbd_nl_drbd2.c     | 2533 ++++++++++++++++++++++++
>   include/uapi/linux/drbd2.h             | 1012 ++++++++++
>   7 files changed, 6883 insertions(+)
>   create mode 100644 Documentation/netlink/specs/drbd2.yaml
>   create mode 100644 drivers/block/drbd/drbd2_nl_gen.c
>   create mode 100644 drivers/block/drbd/drbd2_nl_gen.h
>   create mode 100644 drivers/block/drbd/drbd_nl_drbd2.c
>   create mode 100644 include/uapi/linux/drbd2.h
Also CCing the YNL maintainers here. Original link:
https://lore.kernel.org/linux-block/20261006154607.3936501-19-christoph.boehmwalder@xxxxxxxxxx/