On Friday 25 August 2006 12:21 pm, David Brownell wrote:
> On Friday 25 August 2006 8:42 am, Alan Stern wrote:
> 
> > I'm handicapped by lack of knowledge about usbnet.  I can't even tell 
> > where the RX frame error counter gets incremented, let along what the
> > causes are or how uhci-hcd could be involved.
> 
> % cd drivers/usb/net
> % grep rx_frame_errors *.c 
> ...
> %
> 
> Looks to me like they're not reported by cdc_ether, so if it's not
> a memory smashing bug it would be somewhere in the network stack.

... although in a different context, I just noticed that it seems
like userspace/ifconfig "frame" errors correspond to kernel/netdevice
"length" errors, which usbnet *does* set when e.g. an extra ZLP has
been sent.  Which is a much happier answer than memory smashing!!!

Now, to find out why this particular hardware seems like it doesn't
always want to transmit the ZLPs it's promised to transmit.

- Dave

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