[dpdk-dev] [PATCH] doc: update ICE doc

[Lu, Wenzhuo]

Hi Rami,

From: Rami Rosen [mailto:ramirose at gmail.com]
Sent: Tuesday, April 16, 2019 5:55 AM
To: Lu, Wenzhuo <wenzhuo.lu at intel.com>
Cc: dev at dpdk.org
Subject: Re: [dpdk-dev] [PATCH] doc: update ICE doc

Hi,
In I40E DPDK nic guide, https://doc.dpdk.org/guides/nics/i40e.html,
MDD does not appear.
[Wenzhuo] As I know, this feature is not supported by i40e. I40e can send such packets. That’s why we want to mentions this different behavior for ice.

In IXGBE DPDK nic guide,  https://doc.dpdk.org/guides/nics/ixgbe.html,
MDD appears, but in the known issues section.
[Wenzhuo] Actually, for ixgbe, we want to mention MDD as a limitation (the same section as  known issue). Because it’s more like our driver’s robust is not so strong. We have to ask the APP to provide the right L2/L3 length. (The reason is it’s not effective to let the driver inspect the packet to get the right length.)
But this ice behavior is more like a feature. To my opinion, it’s reasonable to drop such packets. That’s why I put it in the feature section.

I think MDD is supported on both.

just wonder, for the sake of consistency, is it worth to add such a section also
for these nics ?

Other than that,

Acked-by: Rami Rosen <ramirose at gmail.com<mailto:ramirose at gmail.com>>