Re: [dpdk-dev] [PATCH v3] net/ixgbe: fix UDP zero checksum error

-----Original Message-----
From: Ananyev, Konstantin <redacted>
Sent: Monday, February 8, 2021 9:48 PM
To: Wang, Haiyue <redacted>; dev@dpdk.org
Cc: pvalerio@redhat.com; aconole@redhat.com;
david.marchand@redhat.com; Zhang, Qi Z [off-list ref]; Rong, Leyi
[off-list ref]; Tu, Lijuan [off-list ref];
Ruifeng.Wang@arm.com; Feifei.Wang2@arm.com; stable@dpdk.org; Guo, Jia
[off-list ref]; Richardson, Bruce [off-list ref]
Subject: RE: [PATCH v3] net/ixgbe: fix UDP zero checksum error

quoted

There is an 82599 errata that UDP frames with a zero checksum are
incorrectly marked as checksum invalid by the hardware.  This was
leading to misleading PKT_RX_L4_CKSUM_BAD flag.

This patch changes the bad UDP checksum to

PKT_RX_L4_CKSUM_UNKNOWN, so

quoted

the software application will then have to recompute the checksum
itself if needed.

Bugzilla ID: 629
Fixes: af75078fece3 ("first public release")
Cc: stable@dpdk.org

Reported-by: Paolo Valerio <redacted>
Signed-off-by: Haiyue Wang <redacted>
---
v3: Update the hardware errata doc name and session
v2: Change the always GOOD checksum to UNKOWN if BAD.
---

Acked-by: Konstantin Ananyev <redacted>

quoted

2.30.0

Applied to dpdk-next-net-intel.

Thanks
Qi