linux-kernel - Re: [PATCH net,v2] hv_netvsc: Fix napi reschedule while receive completion is busy

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Date:   Thu, 19 Jul 2018 07:24:23 +0900 (KST)
From:   David Miller <davem@...emloft.net>
To:     haiyangz@...rosoft.com, haiyangz@...uxonhyperv.com
Cc:     netdev@...r.kernel.org, kys@...rosoft.com, sthemmin@...rosoft.com,
        olaf@...fle.de, vkuznets@...hat.com, devel@...uxdriverproject.org,
        linux-kernel@...r.kernel.org, stephen@...workplumber.org
Subject: Re: [PATCH net,v2] hv_netvsc: Fix napi reschedule while receive
 completion is busy

From: Haiyang Zhang <haiyangz@...uxonhyperv.com>
Date: Tue, 17 Jul 2018 17:11:13 +0000

> From: Haiyang Zhang <haiyangz@...rosoft.com>
> 
> If out ring is full temporarily and receive completion cannot go out,
> we may still need to reschedule napi if certain conditions are met.
> Otherwise the napi poll might be stopped forever, and cause network
> disconnect.
> 
> Fixes: 7426b1a51803 ("netvsc: optimize receive completions")
> Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>
> Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>

Applied and queued up for -stable.