[dpdk-stable] [PATCH v5] net/ice: simplify the use of DCF device reset

[Zhang, Qi Z]

> -----Original Message-----
> From: Yu, DapengX <dapengx.yu at intel.com>
> Sent: Tuesday, October 26, 2021 5:53 PM
> To: Yang, Qiming <qiming.yang at intel.com>; Zhang, Qi Z
> <qi.z.zhang at intel.com>
> Cc: dev at dpdk.org; Yu, DapengX <dapengx.yu at intel.com>; stable at dpdk.org
> Subject: [PATCH v5] net/ice: simplify the use of DCF device reset

It's a workaround, so rename to 

"workaround DCF reset failure"

> 
> From: Dapeng Yu <dapengx.yu at intel.com>
> 
> After DCF is reset by PF, the DCF device un-initialization cannot function
> normally since the kernel may not clean up resource.
> 
> This patch detects the reset flag, which is set by PF on DCF reset, if the flag is
> true, reset hw to trigger an additional DCF enable/disable cycle which helps to
> work around the issue that kernel driver may not clean up resource during
> previous reset.

Reword to

After DCF is reset by PF, the DCF device un-initialization cannot
function normally, ignore the failure does not help since the kernel
does not clean up resource.

The patch workaround the issue by triggering an additional DCF enable/
disable cycle when a passive reset is detected.

> 
> Fixes: 1a86f4dbdf42 ("net/ice: support DCF device reset")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Dapeng Yu <dapengx.yu at intel.com>

Acked-by: Qi Zhang <qi.z.zhang at intel.com>

Applied to dpdk-next-net-intel.

Thanks
Qi