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From: "Avi Cohen (A)" <avi.cohen@huawei.com>
To: "users@dpdk.org" <users@dpdk.org>,
	"ovs-discuss@openvswitch.org" <ovs-discuss@openvswitch.org>
Subject: [dpdk-users] wrong  TCP checksum on a vdev device
Date: Mon, 26 Jun 2017 08:37:14 +0000	[thread overview]
Message-ID: <B84047ECBD981D4B93EAE5A6245AA361013C8DC6@FRAEML521-MBX.china.huawei.com> (raw)

Hi,
Setup :
Namespace (no DPDK)  <--> veth1  --- veth0  type dpdk-af-packet <--> ovs-dpdk.

TCP packets generated at the namespace have wrong TCP checksum (probably not calculated ).  ICMP/UDP is OK.

If I disable the tx-hw-offload - TCP is running but performance is degraded (probably huge degradation) 
In native OVS (i.e. no DPDK)  - there is no problem.
Is this a bug ? 
Best Regards
avi

                 reply	other threads:[~2017-06-26  8:37 UTC|newest]

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