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

[David Marchand]

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.
https://git.dpdk.org/dpdk/commit/?id=256ff05a9cae7484e2197cde4401dfa1f21d5a6f

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


-- 
David Marchand