[PATCH] net/ice: refine queue start stop

[Zhang, Qi Z]

> -----Original Message-----
> From: Wu, Wenjun1 <wenjun1.wu at intel.com>
> Sent: Friday, January 5, 2024 2:03 PM
> To: Zhang, Qi Z <qi.z.zhang at intel.com>; Yang, Qiming
> <qiming.yang at intel.com>
> Cc: dev at dpdk.org
> Subject: RE: [PATCH] net/ice: refine queue start stop
> 
> > -----Original Message-----
> > From: Zhang, Qi Z <qi.z.zhang at intel.com>
> > Sent: Friday, January 5, 2024 9:37 PM
> > To: Yang, Qiming <qiming.yang at intel.com>; Wu, Wenjun1
> > <wenjun1.wu at intel.com>
> > Cc: dev at dpdk.org; Zhang, Qi Z <qi.z.zhang at intel.com>
> > Subject: [PATCH] net/ice: refine queue start stop
> >
> > Not necessary to return fail when starting or stopping a queue if the
> > queue was already at required state.
> >
> > Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
> > ---
> >  drivers/net/ice/ice_rxtx.c | 16 ++++++++++++++++
> >  1 file changed, 16 insertions(+)
> >
> > diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
> > index 73e47ae92d..3286bb08fe 100644
> > --- a/drivers/net/ice/ice_rxtx.c
> > +++ b/drivers/net/ice/ice_rxtx.c
> > @@ -673,6 +673,10 @@ ice_rx_queue_start(struct rte_eth_dev *dev,
> > uint16_t rx_queue_id)
> >  		return -EINVAL;
> >  	}
> >
> > +	if (dev->data->rx_queue_state[rx_queue_id] ==
> > +		RTE_ETH_QUEUE_STATE_STARTED)
> > +		return 0;
> > +
> >  	if (dev->data->dev_conf.rxmode.offloads &
> > RTE_ETH_RX_OFFLOAD_TIMESTAMP)
> >  		rxq->ts_enable = true;
> >  	err = ice_program_hw_rx_queue(rxq);
> > @@ -717,6 +721,10 @@ ice_rx_queue_stop(struct rte_eth_dev *dev,
> > uint16_t rx_queue_id)
> >  	if (rx_queue_id < dev->data->nb_rx_queues) {
> >  		rxq = dev->data->rx_queues[rx_queue_id];
> >
> > +		if (dev->data->rx_queue_state[rx_queue_id] ==
> > +			RTE_ETH_QUEUE_STATE_STOPPED)
> > +			return 0;
> > +
> >  		err = ice_switch_rx_queue(hw, rxq->reg_idx, false);
> >  		if (err) {
> >  			PMD_DRV_LOG(ERR, "Failed to switch RX queue %u
> off", @@ -758,6
> > +766,10 @@ ice_tx_queue_start(struct rte_eth_dev *dev, uint16_t
> > tx_queue_id)
> >  		return -EINVAL;
> >  	}
> >
> > +	if (dev->data->tx_queue_state[tx_queue_id] ==
> > +		RTE_ETH_QUEUE_STATE_STARTED)
> > +		return 0;
> > +
> >  	buf_len = ice_struct_size(txq_elem, txqs, 1);
> >  	txq_elem = ice_malloc(hw, buf_len);
> >  	if (!txq_elem)
> > @@ -1066,6 +1078,10 @@ ice_tx_queue_stop(struct rte_eth_dev *dev,
> > uint16_t tx_queue_id)
> >  		return -EINVAL;
> >  	}
> >
> > +	if (dev->data->tx_queue_state[tx_queue_id] ==
> > +		RTE_ETH_QUEUE_STATE_STOPPED)
> > +		return 0;
> > +
> >  	q_ids[0] = txq->reg_idx;
> >  	q_teids[0] = txq->q_teid;
> >
> > --
> > 2.31.1
> 
> Acked-by: Wenjun Wu <wenjun1.wu at intel.com>

Applied to dpdk-next-net-intel.

Thanks
Qi