Re: [PATCH v5] net: ethernet: add driver for Aurora VLSI NB8800 Ethernet controller

From: Eric Dumazet
Date: Wed Nov 11 2015 - 09:44:40 EST


On Wed, 2015-11-11 at 14:35 +0000, MÃns RullgÃrd wrote:

> It seems the on-chip interconnect is limiting memory bandwidth available
> to the Ethernet DMA. If I increase the limits, I get 800 Mbps over TCP
> and 850 Mbps over UDP with the driver posted here, the TCP case being
> CPU bound in csum_partial_copy_from_user.

Ah right, NIC has no TX checksum offload :(



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