Re: [EXTERNAL] Re: [net-next PATCH v10 00/11] Introduce RVU representors

On Thu, 8 Aug 2024 11:30:29 +0000 Sunil Kovvuri Goutham wrote:

quoted

I can't bring myself to apply this.
Jiri do you have an opinion?
The device is a NPU/SmartNIC/DPU/IPU, it should be very flexible.
Yet, instead of just implementing the representors like everyone else you do your
own thing and create separate bus devices.  

Can you please elaborate what you mean by "create separate bus devices"

You have a separate PF (on top of the existing "AF" PF) which doesn't
have any datapath port of its own.

Just to clarify we are not creating separate bus devices for representors perse.
On our HW, there are multiple SRIOV PCI devices.

As in SR-IOV-capable PFs?

We are using one of those PCI devices (pci/0002:1c:00.0), to attach required hardware resources to it, for doing packet IO
Between representors and the representees. Once the HW resources (Rx, Tx queues) are attached to it 
we are registering multiple netdevs from this ie one rx/tx queue for one representor.
Beyond that there are no other bus devices being created/used.

What port is used for communication to the host and the uplink?
We're on v10 and I keep asking for documentation showing the system
topology.