On Thu, 13 May 2021 09:10:57 +0800 Yunsheng Lin wrote:
This patchset fixes the packet stuck problem mentioned in [1].
Patch 1: Add STATE_MISSED flag to fix packet stuck problem. Patch 2: Fix a tx_action rescheduling problem after STATE_MISSED flag is added in patch 1. Patch 3: Fix the significantly higher CPU consumption problem when multiple threads are competing on a saturated outgoing device.
V7: Fix netif_tx_wake_queue() data race noted by Jakub. V6: Some performance optimization in patch 1 suggested by Jakub and drop NET_XMIT_DROP checking in patch 3. V5: add patch 3 to fix the problem reported by Michal Kubecek. V4: Change STATE_NEED_RESCHEDULE to STATE_MISSED and add patch 2.
Another review from someone who knows this code better would be great, but it seems good to me (w/ minor nit on patch 3 addressed): Acked-by: Jakub Kicinski <kuba@kernel.org>