netdev - Re: [PATCH net-next v1 0/3] tools/net/ynl: Add support for netlink-raw families

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Date: Wed, 26 Jul 2023 14:06:02 +0100
From: Donald Hunter <donald.hunter@...hat.com>
To: Simon Horman <simon.horman@...igine.com>
Cc: Donald Hunter <donald.hunter@...il.com>, netdev@...r.kernel.org, 
	Jakub Kicinski <kuba@...nel.org>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH net-next v1 0/3] tools/net/ynl: Add support for
 netlink-raw families

On Wed, 26 Jul 2023 at 13:38, Simon Horman <simon.horman@...igine.com> wrote:
>
> On Tue, Jul 25, 2023 at 05:22:02PM +0100, Donald Hunter wrote:
> > This patchset adds support for netlink-raw families such as rtnetlink.
> >
> > The first patch contains the schema definition.
> > The second patch extends ynl to support netlink-raw
> > The third patch adds rtnetlink addr and route message types
> >
> > The second patch depends on "tools: ynl-gen: fix parse multi-attr enum
> > attribute":
> >
> > https://patchwork.kernel.org/project/netdevbpf/list/?series=769229
> >
> > The netlink-raw schema is very similar to genetlink-legacy and I thought
> > about making the changes there and symlinking to it. On balance I
> > thought that might be problematic for accurate schema validation.
> >
> > rtnetlink doesn't seem to fit into unified or directional message
> > enumeration models. It seems like an 'explicit' model would be useful,
> > to require the schema author to specify the message ids directly. The
> > patch supports commands and it supports notifications, but it's
> > currently hard to support both simultaneously from the same netlink-raw
> > spec. I plan to work on this in a future patchset.
> >
> > There is not yet support for notifications because ynl currently doesn't
> > support defining 'event' properties on a 'do' operation. I plan to work
> > on this in a future patch.
> >
> > The link message types are a work in progress that I plan to submit in a
> > future patchset. Links contain different nested attributes dependent on
> > the type of link. Decoding these will need some kind of attr-space
> > selection based on the value of another attribute in the message.
> >
> > Donald Hunter (3):
> >   doc/netlink: Add a schema for netlink-raw families
> >   tools/net/ynl: Add support for netlink-raw families
> >   doc/netlink: Add specs for addr and route rtnetlink message types
>
> Hi Donald,
>
> unfortunately this series doesn't apply to current net-next.
> Please consider rebasing and reposting.

Hi Simon,

As I mentioned in the cover letter, it depends on:
"tools: ynl-gen: fix parse multi-attr enum attribute"
https://patchwork.kernel.org/project/netdevbpf/list/?series=769229

Should I wait for that and repost?

Thanks,
Donald.