Re: [PATCH net v3 0/4] r8152: fix scheduling napi

From: David Miller
Date: Wed Jan 25 2017 - 22:48:00 EST


From: Hayes Wang <hayeswang@xxxxxxxxxxx>
Date: Thu, 26 Jan 2017 09:38:30 +0800

> v3:
> simply the argument for patch #3. Replace &tp->napi with napi.
>
> v2:
> Add smp_mb__after_atomic() for patch #1.
>
> v1:
> Scheduling the napi during the following periods would let it be ignored.
> And the events wouldn't be handled until next napi_schedule() is called.
>
> 1. after napi_disable and before napi_enable().
> 2. after all actions of napi function is completed and before calling
> napi_complete().
>
> If no next napi_schedule() is called, tx or rx would stop working.
>
> In order to avoid these situations, the followings solutions are applied.
>
> 1. prevent start_xmit() from calling napi_schedule() during runtime suspend
> or after napi_disable().
> 2. re-schedule the napi for tx if it is necessary.
> 3. check if any rx is finished or not after napi_enable().

Series applied.