RE: [PATCH net-next 3/3] net: stmmac: Introducing support for Page Pool

[Jose Abreu]

From: Jon Hunter <jonathanh@xxxxxxxxxx>
Date: Jul/25/2019, 15:25:59 (UTC+00:00)

> 
> On 25/07/2019 14:26, Jose Abreu wrote:
> 
> ...
> 
> > Well, I wasn't expecting that :/
> > 
> > Per documentation of barriers I think we should set descriptor fields 
> > and then barrier and finally ownership to HW so that remaining fields 
> > are coherent before owner is set.
> > 
> > Anyway, can you also add a dma_rmb() after the call to 
> > stmmac_rx_status() ?
> 
> Yes. I removed the debug print added the barrier, but that did not help.

So, I was finally able to setup NFS using your replicated setup and I 
can't see the issue :(

The only difference I have from yours is that I'm using TCP in NFS 
whilst you (I believe from the logs), use UDP.

You do have flow control active right ? And your HW FIFO size is >= 4k ?

---
Thanks,
Jose Miguel Abreu