Messages in this thread | | | Date | Thu, 15 Feb 2024 17:10:13 -0800 | From | Jakub Kicinski <> | Subject | Re: [PATCH V4 0/5] mlx5 ConnectX control misc driver |
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On Thu, 15 Feb 2024 09:21:38 -0400 Jason Gunthorpe wrote: > On Wed, Feb 14, 2024 at 07:48:32AM -0800, Jakub Kicinski wrote: > > On Wed, 14 Feb 2024 00:29:16 -0800 Christoph Hellwig wrote: > > > With my busy kernel contributor head on I have to voice my > > > dissatisfaction with the subsystem maintainer overreach that's causing > > > the troubles here. > > > > Overreach is unfortunate, I'd love to say "please do merge it as part > > of RDMA". You probably don't trust my opinion but Jason admitted himself > > this is primarily for RDMA. > > "admitted"? You make it sound like a crime. I've been very clear on > this need from the RDMA community since the first posting.
Sorry, unintentional :) Maybe it's a misunderstanding but my impression was that at least Saeed was trying hard to make this driver a common one, not just for RDMA.
> > The problem is that some RDMA stuff is built really closely on TCP, > > Huh? Since when? Are you talking about soft-iwarp? That is a reasearch > project and Bernard is very responsive, if you have issues ask him and > he will help. > > Otherwise the actual HW devices are not entangled with netdev TCP, the > few iWarp devices have their own TCP implementation, in accordance > with what the IETF standardized.
There are some things I know either from work or otherwise told me in confidence which I can't share. This is very frustrating for me, and probably for you, sorry :(
> > and given Jason's and co. inability to understand that good fences > > make good neighbors it will soon start getting into the netdev stack :| > > I seem to recall you saying RDMA shouldn't call any netdev APIs at > all. We were unable to agree on where to build the fence for this > reason.
Last time you were calling into the IPsec stack right? It's not just a basic API. IDK how to draw a line, definitely open to suggestions!
> > Ah, and I presume they may also want it for their DOCA products. > > So 80% RDMA, 15% DOCA, 5% the rest is my guess. > > I don't know all details about DOCA, but what I know about runs over > RDMA.
Well, since you're an RDMA person that's not really saying much about existence of other parts.
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