[dpdk-dev] Wrong TCP Checkum computed by hardware

Matthew Hall mhall at mhcomputing.net
Wed Oct 28 07:57:57 CET 2015


On Wed, Oct 28, 2015 at 12:20:22PM +0530, Padam Jeet Singh wrote:
> Any hint what could I be doing wrong here?

When this kind of stuff doesn't work it often will depend on the exact version 
of card, chip, etc. if there are any errata.

So you might want to collect the specifics of the board with lspci -v, 
ethtool, and pulling it out to check the chip and board revisions.

In addition check over the example apps and see how things work there compared 
with your own code. Often the DPDK interfaces are kind of complex and small 
pointer or mbuf manipulation mistakes can cause very odd results.

Matthew.


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