[dpdk-dev] [PATCH v8 1/2] net/i40e: queue region set and flush

[Chilikin, Andrey]

Hi Wei,

Is there number of RX queues configured for the port? 
If main_vsi->nb_used_qps reflects number of enabled RX queues, then it can be used.

Regards,
Andrey

> -----Original Message-----
> From: Zhao1, Wei
> Sent: Wednesday, October 18, 2017 4:01 AM
> To: Chilikin, Andrey <andrey.chilikin at intel.com>; dev at dpdk.org
> Cc: Yigit, Ferruh <ferruh.yigit at intel.com>; Xing, Beilei
> <beilei.xing at intel.com>; Wu, Jingjing <jingjing.wu at intel.com>
> Subject: RE: [dpdk-dev] [PATCH v8 1/2] net/i40e: queue region set and flush
> 
> Hi，Andrey
> 
> > -----Original Message-----
> > From: Chilikin, Andrey
> > Sent: Friday, October 13, 2017 6:07 PM
> > To: Zhao1, Wei <wei.zhao1 at intel.com>; dev at dpdk.org
> > Cc: Zhao1, Wei <wei.zhao1 at intel.com>; Yigit, Ferruh
> > <ferruh.yigit at intel.com>; Xing, Beilei <beilei.xing at intel.com>; Wu, Jingjing
> > <jingjing.wu at intel.com>
> > Subject: RE: [dpdk-dev] [PATCH v8 1/2] net/i40e: queue region set and
> flush
> >
> > Hi Wei
> >
> > Sorry for the late comment, but I was not included to the patchset CC list
> and
> > just found this new version.
> >
> > > -----Original Message-----
> > > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Wei Zhao
> > > Sent: Wednesday, October 11, 2017 9:56 AM
> > > To: dev at dpdk.org
> > > Cc: Zhao1, Wei <wei.zhao1 at intel.com>
> > > Subject: [dpdk-dev] [PATCH v8 1/2] net/i40e: queue region set and
> > > flush
> >
> >
> > <snip>
> >
> > > +int
> > > +i40e_flush_queue_region_all_conf(struct rte_eth_dev *dev,
> > > +	struct i40e_hw *hw, struct i40e_pf *pf, uint16_t on) {
> > > +	int32_t ret = -EINVAL;
> > > +	struct i40e_queue_regions *info = &pf->queue_region;
> > > +
> > > +	if (on) {
> > > +		i40e_queue_region_pf_flowtype_conf(hw, pf);
> > > +
> > > +		ret = i40e_vsi_update_queue_region_mapping(hw, pf);
> > > +		if (ret != I40E_SUCCESS) {
> > > +			PMD_DRV_LOG(INFO, "Failed to flush queue region
> > > mapping.");
> > > +			return ret;
> > > +		}
> > > +
> > > +		ret = i40e_queue_region_dcb_configure(hw, pf);
> > > +		if (ret != I40E_SUCCESS) {
> > > +			PMD_DRV_LOG(INFO, "Failed to flush dcb.");
> > > +			return ret;
> > > +		}
> > > +
> > > +		return 0;
> > > +	}
> > > +
> > > +	info->queue_region_number = 1;
> > > +	info->region[0].queue_num = 64;
> >
> > Why number of queues is hardcoded to a magic number 64? How it will
> work
> > if VSI is enabled with smaller number of queues, for example, 1 or 6? 64 is
> > the maximum number of queues that can be used for RSS, but VSI might
> be
> > created with only few queues.
> 
> Yes, I know what is your mean, may be it should be change to
> 
> struct i40e_vsi *main_vsi = pf->main_vsi;
> info->region[0].queue_num = main_vsi->nb_used_qps;
> 
> Do you think so?
> 
> >
> > > +	info->region[0].queue_start_index = 0;
> > > +
> > > +	ret = i40e_vsi_update_queue_region_mapping(hw, pf);
> > > +	if (ret != I40E_SUCCESS)
> > > +		PMD_DRV_LOG(INFO, "Failed to flush queue region
> > > mapping.");
> > > +
> > > +	ret = i40e_dcb_init_configure(dev, TRUE);
> > > +	if (ret != I40E_SUCCESS) {
> > > +		PMD_DRV_LOG(INFO, "Failed to flush dcb.");
> > > +		pf->flags &= ~I40E_FLAG_DCB;
> > > +	}
> > > +
> > > +	i40e_init_queue_region_conf(dev);
> > > +
> > > +	return 0;
> > > +}