[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <CAM0EoMnKk9=WFm7ZtPbHDRc6_J7Xw8WR3TG2_Em4ucJ6nCNJOw@mail.gmail.com>
Date: Tue, 31 Jan 2023 17:32:52 -0500
From: Jamal Hadi Salim <jhs@...atatu.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: John Fastabend <john.fastabend@...il.com>,
"Singhai, Anjali" <anjali.singhai@...el.com>,
Toke Høiland-Jørgensen <toke@...hat.com>,
Jamal Hadi Salim <hadi@...atatu.com>,
Jiri Pirko <jiri@...nulli.us>,
Willem de Bruijn <willemb@...gle.com>,
Stanislav Fomichev <sdf@...gle.com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"kernel@...atatu.com" <kernel@...atatu.com>,
"Chatterjee, Deb" <deb.chatterjee@...el.com>,
"Limaye, Namrata" <namrata.limaye@...el.com>,
"khalidm@...dia.com" <khalidm@...dia.com>,
"tom@...anda.io" <tom@...anda.io>,
"pratyush@...anda.io" <pratyush@...anda.io>,
"xiyou.wangcong@...il.com" <xiyou.wangcong@...il.com>,
"davem@...emloft.net" <davem@...emloft.net>,
"edumazet@...gle.com" <edumazet@...gle.com>,
"pabeni@...hat.com" <pabeni@...hat.com>,
"vladbu@...dia.com" <vladbu@...dia.com>,
"simon.horman@...igine.com" <simon.horman@...igine.com>,
"stefanc@...vell.com" <stefanc@...vell.com>,
"seong.kim@....com" <seong.kim@....com>,
"mattyk@...dia.com" <mattyk@...dia.com>,
"Daly, Dan" <dan.daly@...el.com>,
"Fingerhut, John Andy" <john.andy.fingerhut@...el.com>
Subject: Re: [PATCH net-next RFC 00/20] Introducing P4TC
On Tue, Jan 31, 2023 at 2:10 PM Jakub Kicinski <kuba@...nel.org> wrote:
>
> On Tue, 31 Jan 2023 05:30:10 -0500 Jamal Hadi Salim wrote:
> > > Note, there are two paths in P4TC:
> > > DDP loading via devlink is equivalent to loading the P4 binary for the hardware.
> > > That is one of the 3 (and currently most popular) driver interfaces
> > > suggested. Some of that drew
> >
> > Sorry didnt finish my thought here, wanted to say: The loading of the
> > P4 binary over devlink drew (to some people) suspicion it is going to
> > be used for loading kernel bypass.
>
> The only practical use case I heard was the IPU. Worrying about devlink
> programming being a bypass on an IPU is like rearranging chairs on the
> Titanic.
BTW, I do believe FNICs are heading in that direction as well. I didnt
quiet follow the titanic chairs analogy, can you elaborate on that
statement?
cheers,
jamal
Powered by blists - more mailing lists