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 15:16:11 +0200
From: Simon Horman <simon.horman@...igine.com>
To: Donald Hunter <donald.hunter@...hat.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, Jul 26, 2023 at 02:06:02PM +0100, Donald Hunter wrote:
> 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?

Sorry my bad. I guess this is fine as-is unless Jakub says otherwise.

-- 
pw-bot: under-review