From: Jakub Kicinski <kuba@kernel.org>
To: "Christoph Böhmwalder" <christoph.boehmwalder@linbit.com>
Cc: Jens Axboe <axboe@kernel.dk>,
drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org,
Lars Ellenberg <lars.ellenberg@linbit.com>,
Philipp Reisner <philipp.reisner@linbit.com>,
linux-block@vger.kernel.org,
Donald Hunter <donald.hunter@gmail.com>,
Eric Dumazet <edumazet@google.com>,
netdev@vger.kernel.org
Subject: Re: [PATCH v3 0/2] drbd: switch from genl_magic to YNL
Date: Fri, 8 May 2026 17:19:37 -0700 [thread overview]
Message-ID: <20260508171937.1c9419f5@kernel.org> (raw)
In-Reply-To: <20260506124541.1951772-1-christoph.boehmwalder@linbit.com>
On Wed, 6 May 2026 14:45:39 +0200 Christoph Böhmwalder wrote:
> DRBD's genetlink interface was defined using a custom multi-include
> macro system, genl_magic_{func,struct}.h. This system generated struct
> definitions, netlink policies, serialization functions and more
> from a single "magic" header.
> It never really caught on; DRBD is its only user, its internal macro
> jungle is next to impossible to understand, and even harder to debug.
>
> This series replaces it with the standard solution, YNL.
> The *_gen.[ch] files were created with a modified YNL generator, but
> these modifications are not shipped because the current DRBD family is
> effectively frozen.
>
> Note: this family primarily aims for compatibility with existing
> userspace. The next planned step is a new (also YNL-based) family,
> "drbd2", which will implement all the actual modern recommendations for
> new netlink families.
FWIW:
Acked-by: Jakub Kicinski <kuba@kernel.org>
WARNING: multiple messages have this Message-ID (diff)
From: Jakub Kicinski <kuba@kernel.org>
To: "Christoph Böhmwalder" <christoph.boehmwalder@linbit.com>
Cc: Jens Axboe <axboe@kernel.dk>,
Donald Hunter <donald.hunter@gmail.com>,
netdev@vger.kernel.org,
Philipp Reisner <philipp.reisner@linbit.com>,
linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
Eric Dumazet <edumazet@google.com>,
Lars Ellenberg <lars.ellenberg@linbit.com>,
drbd-dev@lists.linbit.com
Subject: Re: [PATCH v3 0/2] drbd: switch from genl_magic to YNL
Date: Fri, 8 May 2026 17:19:37 -0700 [thread overview]
Message-ID: <20260508171937.1c9419f5@kernel.org> (raw)
In-Reply-To: <20260506124541.1951772-1-christoph.boehmwalder@linbit.com>
On Wed, 6 May 2026 14:45:39 +0200 Christoph Böhmwalder wrote:
> DRBD's genetlink interface was defined using a custom multi-include
> macro system, genl_magic_{func,struct}.h. This system generated struct
> definitions, netlink policies, serialization functions and more
> from a single "magic" header.
> It never really caught on; DRBD is its only user, its internal macro
> jungle is next to impossible to understand, and even harder to debug.
>
> This series replaces it with the standard solution, YNL.
> The *_gen.[ch] files were created with a modified YNL generator, but
> these modifications are not shipped because the current DRBD family is
> effectively frozen.
>
> Note: this family primarily aims for compatibility with existing
> userspace. The next planned step is a new (also YNL-based) family,
> "drbd2", which will implement all the actual modern recommendations for
> new netlink families.
FWIW:
Acked-by: Jakub Kicinski <kuba@kernel.org>
next prev parent reply other threads:[~2026-05-09 0:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-06 12:45 [PATCH v3 0/2] drbd: switch from genl_magic to YNL Christoph Böhmwalder
2026-05-06 12:45 ` Christoph Böhmwalder
2026-05-06 12:45 ` [PATCH v3 1/2] drbd: move UAPI headers to include/uapi/linux/ Christoph Böhmwalder
2026-05-06 12:45 ` Christoph Böhmwalder
2026-05-06 12:45 ` [PATCH v3 2/2] drbd: replace genl_magic with explicit netlink serialization Christoph Böhmwalder
2026-05-06 12:45 ` Christoph Böhmwalder
2026-05-09 0:19 ` Jakub Kicinski [this message]
2026-05-09 0:19 ` [PATCH v3 0/2] drbd: switch from genl_magic to YNL Jakub Kicinski
2026-05-09 13:58 ` Jens Axboe
2026-05-09 13:58 ` Jens Axboe
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