Re: [dpdk-dev] [PATCH v3 4/5] power: modify return of queue_stopped

["Li, Miao" <miao.li@intel.com>]

Hi Chenbo,

> -----Original Message-----
> From: Xia, Chenbo <chenbo.xia@intel.com>
> Sent: Wednesday, September 29, 2021 11:03 AM
> To: Li, Miao <miao.li@intel.com>; dev@dpdk.org
> Cc: maxime.coquelin@redhat.com
> Subject: RE: [PATCH v3 4/5] power: modify return of queue_stopped
> 
> > -----Original Message-----
> > From: Li, Miao <miao.li@intel.com>
> > Sent: Friday, September 24, 2021 6:23 PM
> > To: dev@dpdk.org
> > Cc: Xia, Chenbo <chenbo.xia@intel.com>; maxime.coquelin@redhat.com; Li,
> Miao
> > <miao.li@intel.com>
> > Subject: [PATCH v3 4/5] power: modify return of queue_stopped
> >
> > Since some vdevs like virtio and vhost do not support rxq_info_get and
> > queue state inquiry, the error return value -ENOTSUP need to be ignored
> > when queue_stopped cannot get rx queue information and rx queue state.
> > This patch changes the return value of queue_stopped when
> > rte_eth_rx_queue_info_get return ENOTSUP to support vdevs which cannot
> > provide rx queue information and rx queue state enable power management.
> >
> > Signed-off-by: Miao Li <miao.li@intel.com>
> > ---
> >  lib/power/rte_power_pmd_mgmt.c | 9 +++++++--
> >  1 file changed, 7 insertions(+), 2 deletions(-)
> >
> > diff --git a/lib/power/rte_power_pmd_mgmt.c
> b/lib/power/rte_power_pmd_mgmt.c
> > index 0ce40f0875..39a2b4cd23 100644
> > --- a/lib/power/rte_power_pmd_mgmt.c
> > +++ b/lib/power/rte_power_pmd_mgmt.c
> > @@ -382,8 +382,13 @@ queue_stopped(const uint16_t port_id, const
> uint16_t
> > queue_id)
> >  {
> >  	struct rte_eth_rxq_info qinfo;
> >
> > -	if (rte_eth_rx_queue_info_get(port_id, queue_id, &qinfo) < 0)
> > -		return -1;
> > +	int ret = rte_eth_rx_queue_info_get(port_id, queue_id, &qinfo);
> > +	if (ret < 0) {
> > +		if (ret == -ENOTSUP)
> > +			return 1;
> > +		else
> > +			return -1;
> > +	}
> >
> >  	return qinfo.queue_state == RTE_ETH_QUEUE_STATE_STOPPED;
> >  }
> > --
> > 2.25.1
> 
> Anatoly's ACK is missed.

I will add it in the next version.

Thanks,
Miao