Re: [RFC PATCH 00/10] Device Memory TCP

On Tue, 18 Jul 2023 12:20:59 -0600 David Ahern wrote:

On 7/18/23 12:15 PM, Jakub Kicinski wrote:

quoted

On Tue, 18 Jul 2023 15:06:29 -0300 Jason Gunthorpe wrote:  

quoted

netlink feels like a weird API choice for that, in particular it would
be really wrong to somehow bind the lifecycle of a netlink object to a
process.  

Netlink is the right API, life cycle of objects can be easily tied to
a netlink socket.  

That is an untuitive connection -- memory references, h/w queues, flow
steering should be tied to the datapath socket, not a control plane socket.

There's one RSS context for may datapath sockets. Plus a lot of the
APIs already exist, and it's more of a question of packaging them up 
at the user space level. For things which do not have an API, however,
netlink, please.