Re: [PATCH net-next V2 0/2] XDP transmission for tuntap

From: Jason Wang
Date: Tue Jan 09 2018 - 22:01:00 EST




On 2018å01æ10æ 00:06, David Miller wrote:
From: Jason Wang <jasowang@xxxxxxxxxx>
Date: Thu, 4 Jan 2018 11:14:26 +0800

This series tries to implement XDP transmission (ndo_xdp_xmit) for
tuntap. Pointer ring was used for queuing both XDP buffers and
sk_buff, this is done by encoding the type into lowest bit of the
pointer and storin XDP metadata in the headroom of XDP buff.

Tests gets 3.05 Mpps when doing xdp_redirect_map from ixgbe to VM
(testpmd + virtio-net in guest). This gives us ~20% improvments
compared to use skb during redirect.

Please review.

Changes from V1:

- slient warnings
- fix typos
- add skb mode number in the commit log
Series applied, thanks Jason.

There was some overlap with recent changes from Jesper, please take
a look.

Thank you.

The changes looks good, will have a test and report.

Thanks