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

[David Miller]

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

> From: Haiyang Zhang <haiyangz at microsoft.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 at networkplumber.org>
> Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com>

Applied and queued up for -stable.