Re: CVS commit: src/sys/dev/usb

[Rin Okuyama <rokuyama%rk.phys.keio.ac.jp@localhost>]

On 2019/01/28 19:52, Michael van Elst wrote:
> On Mon, Jan 28, 2019 at 06:31:01PM +0900, Rin Okuyama wrote:
> > Hi,
> >
> > On 2019/01/25 4:18, Michael van Elst wrote:
> > > On Thu, Jan 24, 2019 at 03:51:02PM +0100, Robert Swindells wrote:
> > > > It doesn't work at all for me on a LAN7500.
> > > Tested on an RPI3b+ which is LAN7800.
>
> > It works for me with LAN7500 (Z-TEK ZE582) on RPI3B+ and amd64 boxes.
> > Could you please describe more in details how it fails?
>
> According to Robert it fails completely and even stalls the USB stack.
> He's using a Startech USB2.0 Ethernet adapter with a pinebook.

Revision may be different from my adapter and his one.
I ordered that one for testing :-).

> > > notice the Retr column, somewhere packets get lost.
> > > The reverse direction (-R) is fine in both setups.
> >
> > Hmm, similar problem occurs for me with LAN7800 and LAN7500
> > when client is
>
> I haven't found where the packets get lost. Since it happends for
> the 'faster' senders, it's probably dropping packets on receive,
> but I don't see any errors reported by the driver.

Yes, there's no error signals in RX_CMD_A register and so on.
Probably, H/W drops packets silently when buffer shortage?

Thanks,
rin