[dpdk-dev] Loop back mode of the KNI

Zhang, Helin helin.zhang at intel.com
Wed Dec 25 01:50:11 CET 2013


Hi Daniel

Thanks for your good catch!
Yes. That's a bug, and it will be fixed in later DPDK releases.

Regards,
Helin

-----Original Message-----
From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Daniel Kaminsky
Sent: Friday, December 20, 2013 12:36 AM
To: dev at dpdk.org
Subject: [dpdk-dev] Loop back mode of the KNI

Hi all,

We're working on the KNI and we see a strange behavior which seems like a bug in the the kernel module.

When running with *lo_mode=lo_mode_fifo *everything works as expected, the packets looks similar on the ingress and egress.
But when running with *lo_mode=lo_mode_fifo_skb *the packets on the egress doesn't include the first 14 bytes (the ethernet header) although the packets size doesn't change.

Thanks,
Daniel


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