RE: [PATCH v3] net/ice: fix tm configuration cannot be cleared

["Zhang, Qi Z" <qi.z.zhang@intel.com>]

> -----Original Message-----
> From: Wu, Wenjun1 <wenjun1.wu@intel.com>
> Sent: Thursday, September 7, 2023 10:35 AM
> To: Deng, KaiwenX <kaiwenx.deng@intel.com>; dev@dpdk.org
> Cc: stable@dpdk.org; Yang, Qiming <qiming.yang@intel.com>; Zhou, YidingX
> <yidingx.zhou@intel.com>; Deng, KaiwenX <kaiwenx.deng@intel.com>;
> Zhang, Qi Z <qi.z.zhang@intel.com>; Xu, Ting <ting.xu@intel.com>
> Subject: RE: [PATCH v3] net/ice: fix tm configuration cannot be cleared
> 
> 
> 
> > -----Original Message-----
> > From: Kaiwen Deng <kaiwenx.deng@intel.com>
> > Sent: Wednesday, September 6, 2023 3:50 PM
> > To: dev@dpdk.org
> > Cc: stable@dpdk.org; Yang, Qiming <qiming.yang@intel.com>; Zhou,
> > YidingX <yidingx.zhou@intel.com>; Deng, KaiwenX
> > <kaiwenx.deng@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>; Xu, Ting
> > <ting.xu@intel.com>
> > Subject: [PATCH v3] net/ice: fix tm configuration cannot be cleared
> >
> > When the device is stopped, the PMD resets the commit flag so that we
> > can update the hierarchy configuration. The commit flag is also used
> > to determine if the hierarchy configuration needs to be cleared.
> > When the PMD exits, it always stops the device first and also resets
> > the commit flag result in the hierarchy configuration is not cleared.
> >
> > This commit changes the PMD to not reset the commit flag when the
> > device is stopped. And we prevent additional commit when device is
> > running by only checking the stop flag.
> >
> > Fixes: f5ec6a3a1987 ("net/ice: fix TM hierarchy commit flag reset")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Kaiwen Deng <kaiwenx.deng@intel.com>
> > ---
> > Changes since v2:
> > - Replace DPDK with the PMD in commit log.
> >
> > Changes since v1:
> > - Prevent additional commit when device is running.
> > ---
> > ---
> >  drivers/net/ice/ice_dcf_ethdev.c |  2 --
> > drivers/net/ice/ice_dcf_sched.c  | 14
> > ++++++++------
> >  2 files changed, 8 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/net/ice/ice_dcf_ethdev.c
> > b/drivers/net/ice/ice_dcf_ethdev.c
> > index 30ad18d8fc..065ec728c2 100644
> > --- a/drivers/net/ice/ice_dcf_ethdev.c
> > +++ b/drivers/net/ice/ice_dcf_ethdev.c
> > @@ -670,7 +670,6 @@ ice_dcf_dev_stop(struct rte_eth_dev *dev)
> >  	struct ice_dcf_adapter *dcf_ad = dev->data->dev_private;
> >  	struct rte_intr_handle *intr_handle = dev->intr_handle;
> >  	struct ice_adapter *ad = &dcf_ad->parent;
> > -	struct ice_dcf_hw *hw = &dcf_ad->real_hw;
> >
> >  	if (ad->pf.adapter_stopped == 1) {
> >  		PMD_DRV_LOG(DEBUG, "Port is already stopped"); @@ -
> > 697,7 +696,6 @@ ice_dcf_dev_stop(struct rte_eth_dev *dev)
> >
> >  	dev->data->dev_link.link_status = RTE_ETH_LINK_DOWN;
> >  	ad->pf.adapter_stopped = 1;
> > -	hw->tm_conf.committed = false;
> >
> >  	return 0;
> >  }
> > diff --git a/drivers/net/ice/ice_dcf_sched.c
> > b/drivers/net/ice/ice_dcf_sched.c index a231c1e60b..b08bc5f1de 100644
> > --- a/drivers/net/ice/ice_dcf_sched.c
> > +++ b/drivers/net/ice/ice_dcf_sched.c
> > @@ -237,6 +237,7 @@ ice_dcf_node_add(struct rte_eth_dev *dev,
> uint32_t
> > node_id,
> >  	enum ice_dcf_tm_node_type node_type =
> ICE_DCF_TM_NODE_TYPE_MAX;
> >  	struct ice_dcf_tm_shaper_profile *shaper_profile = NULL;
> >  	struct ice_dcf_adapter *adapter = dev->data->dev_private;
> > +	struct ice_adapter *ad = &adapter->parent;
> >  	struct ice_dcf_hw *hw = &adapter->real_hw;
> >  	struct ice_dcf_tm_node *parent_node;
> >  	struct ice_dcf_tm_node *tm_node;
> > @@ -246,10 +247,10 @@ ice_dcf_node_add(struct rte_eth_dev *dev,
> > uint32_t node_id,
> >  	if (!params || !error)
> >  		return -EINVAL;
> >
> > -	/* if already committed */
> > -	if (hw->tm_conf.committed) {
> > +	/* if port is running */
> > +	if (!ad->pf.adapter_stopped) {
> >  		error->type = RTE_TM_ERROR_TYPE_UNSPECIFIED;
> > -		error->message = "already committed";
> > +		error->message = "port is running";
> >  		return -EINVAL;
> >  	}
> >
> > @@ -400,16 +401,17 @@ ice_dcf_node_delete(struct rte_eth_dev *dev,
> > uint32_t node_id,  {
> >  	enum ice_dcf_tm_node_type node_type =
> ICE_DCF_TM_NODE_TYPE_MAX;
> >  	struct ice_dcf_adapter *adapter = dev->data->dev_private;
> > +	struct ice_adapter *ad = &adapter->parent;
> >  	struct ice_dcf_hw *hw = &adapter->real_hw;
> >  	struct ice_dcf_tm_node *tm_node;
> >
> >  	if (!error)
> >  		return -EINVAL;
> >
> > -	/* if already committed */
> > -	if (hw->tm_conf.committed) {
> > +	/* if port is running */
> > +	if (!ad->pf.adapter_stopped) {
> >  		error->type = RTE_TM_ERROR_TYPE_UNSPECIFIED;
> > -		error->message = "already committed";
> > +		error->message = "port is running";
> >  		return -EINVAL;
> >  	}
> >
> > --
> > 2.25.1
> 
> Acked-by: Wenjun Wu <wenjun1.wu@intel.com>

Applied to dpdk-next-net-intel.

Thanks
Qi