[dpdk-dev] TX IP checksum offloading

[Benson, Bryan]

Hi Daniel,
I posted some findings yesterday that seem relevant.  Try using the ol flags when you use an RX free threshold below 32.

I am looking into what can be done to fix it for values of 32 and above.
http://dpdk.org/ml/archives/dev/2013-November/000724.html

Thanks,
Bryan Benson
________________________________________
From: dev [dev-bounces at dpdk.org] on behalf of Daniel Kaminsky [daniel.kaminsky at infinitelocality.com]
Sent: Thursday, November 07, 2013 4:52 AM
To: dev at dpdk.org
Subject: [dpdk-dev] TX IP checksum offloading

Hi,

Did anyone had an experience using the PKT_TX_IP_CKSUM flag?
I have an application that generates IP traffic but whenever I try to set
this flag on (*m->ol_flags = PKT_TX_IP_CKSUM)* the rte_mbuf nothing is sent
out.
Retrieving that statistics from the ethernet device show zero for opackets
and oerrors.

I'm using ixgbe driver and DPDK 1.5.0-8 (from Intel) distribution.

Thanks,
Daniel