Re: [PATCH 0/3] net: microchip_t1s: additional phy support and collision detect handling

On Mon, Nov 27, 2023 at 05:03:54PM +0100, Andrew Lunn wrote:

quoted

* 3-4 nodes (depending on how many usb ports and dongles I have)
* run iperf with long cables and CSMA/CD
* run iperf with long cables and CMSA/No CD

I'll report back the results. Anything you'd like to add/focus on with
evaluation?

Humm, thinking about how CSMA/CD works...

Maybe look at what counters the MAC provides. Does it have collisions
and bad FCS? A collision should result in a bad FCS, if you are not
using CD. So if things are working correctly, the count for CD should
move to FCS if you turn CD off. If CD is falsely triggering, FCS as a
% should not really change, but you probably get more frames over the
link?

That is some really cool input, I have to do some datasheet digging and
hacking. I'll try to set everything up today, tomorrow I can hang in
the lab after hours and test things out!

Partihban suggested that Microchips support might be able to help with
testing, might give them a ping soon as I a solid plan.

Really appreciate the insight! 
R