Re: git: NFE - Change default RX ring size from 128 -> 256, Adjust moderation timer.

[Chris Turner <c.turner@xxxxxxxxxxxxxxxxxxx>]

Matthew Dillon wrote:
> commit 5df3a6aa72f98f69fa498e2249e71d7a14a0f16f
> Author: Matthew Dillon <dillon@apollo.backplane.com>
> Date:   Wed Sep 9 09:10:58 2009 -0700
>
>     NFE - Change default RX ring size from 128 -> 256, Adjust moderation timer.
>     
>     * NFE does not seem to be able to flow control the phy.  TCP reception
>       using window scaling and large socket bufs can blow out the receiver ring
>       before the interrupt has a chance to drain it.
>     
>       This results in the receiver dropping a packet and the transmitter
>       seeing bursts of duplicate TCP acks and having to go into recovery.
>     

does this interact with checksum offloading on the device?

have a few NFE's lying around .. would be good to know more if available!

Thanks,

- Chris