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

David Marchand david.marchand at redhat.com
Thu Feb 25 11:54:41 CET 2021

Hello Haiyue,

On Thu, Feb 4, 2021 at 3:56 PM Haiyue Wang <haiyue.wang at intel.com> wrote:
> 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 the software application will then have to recompute the checksum
> itself if needed.
> Bugzilla ID: 629
> Fixes: af75078fece3 ("first public release")
> Cc: stable at dpdk.org
> Reported-by: Paolo Valerio <pvalerio at redhat.com>
> Signed-off-by: Haiyue Wang <haiyue.wang at intel.com>

There was a previous mention of this issue in the past and it resulted
in dropping part of the hw statistics.

Does it make sense to restrict this "fix" to 82599 only?

David Marchand

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