On Thu, 5 Aug 2021 19:05:26 +0800 Yunsheng Lin wrote:

This patch adds skb's frag page recycling support based on
the frag page support in page pool.

The performance improves above 10~20% for single thread iperf
TCP flow with IOMMU disabled when iperf server and irq/NAPI
have a different CPU.

The performance improves about 135%(14Gbit to 33Gbit) for single
thread iperf TCP flow IOMMU is in strict mode and iperf server
shares the same cpu with irq/NAPI.

Signed-off-by: Yunsheng Lin <redacted>

This patch does not apply cleanly to net-next, please rebase 
if you're targeting that tree.