[dpdk-dev,v3,1/5] ethdev: add rx interrupt enable/disable functions

  v3 changes
- Add return value for interrupt enable/disable functions

Add two dev_ops functions to enable and disable rx queue interrupts

Signed-off-by: Danny Zhou <danny.zhou@intel.com>
Tested-by: Yong Liu <yong.liu@intel.com>
---
 lib/librte_ether/rte_ethdev.c | 43 ++++++++++++++++++++++++++++++++
 lib/librte_ether/rte_ethdev.h | 57 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 100 insertions(+)
  

On Tue, Feb 17, 2015 at 09:47:15PM +0800, Zhou Danny wrote:
> v3 changes
> - Add return value for interrupt enable/disable functions
> 
> Add two dev_ops functions to enable and disable rx queue interrupts
> 
> Signed-off-by: Danny Zhou <danny.zhou@intel.com>
> Tested-by: Yong Liu <yong.liu@intel.com>
> ---
>  lib/librte_ether/rte_ethdev.c | 43 ++++++++++++++++++++++++++++++++
>  lib/librte_ether/rte_ethdev.h | 57 +++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 100 insertions(+)
> 
> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> index ea3a1fb..d27469a 100644
> --- a/lib/librte_ether/rte_ethdev.c
> +++ b/lib/librte_ether/rte_ethdev.c
> @@ -2825,6 +2825,49 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
>  	}
>  	rte_spinlock_unlock(&rte_eth_dev_cb_lock);
>  }
> +
> +int
> +rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> +				uint16_t queue_id)
> +{
> +	struct rte_eth_dev *dev;
> +
> +	if (port_id >= nb_ports) {
> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> +		return (-ENODEV);
> +	}
> +
> +	dev = &rte_eth_devices[port_id];
> +	if (dev == NULL) {
> +		PMD_DEBUG_TRACE("Invalid port device\n");
> +		return (-ENODEV);
> +	}
> +
> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_enable, -ENOTSUP);
> +	return (*dev->dev_ops->rx_queue_intr_enable)(dev, queue_id);
> +}
> +
> +int
> +rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> +				uint16_t queue_id)
> +{
> +	struct rte_eth_dev *dev;
> +
> +	if (port_id >= nb_ports) {
> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> +		return (-ENODEV);
> +	}
> +
> +	dev = &rte_eth_devices[port_id];
> +	if (dev == NULL) {
> +		PMD_DEBUG_TRACE("Invalid port device\n");
> +		return (-ENODEV);
> +	}
> +
> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_disable, -ENOTSUP);
> +	return (*dev->dev_ops->rx_queue_intr_disable)(dev, queue_id);
> +}
> +
>  #ifdef RTE_NIC_BYPASS
>  int rte_eth_dev_bypass_init(uint8_t port_id)
>  {
> diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
> index 84160c3..0f320a9 100644
> --- a/lib/librte_ether/rte_ethdev.h
> +++ b/lib/librte_ether/rte_ethdev.h
> @@ -848,6 +848,8 @@ struct rte_eth_fdir {
>  struct rte_intr_conf {
>  	/** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
>  	uint16_t lsc;
> +	/** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */
> +	uint16_t rxq;
>  };
>  
>  /**
> @@ -1109,6 +1111,14 @@ typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
>  				    const struct rte_eth_txconf *tx_conf);
>  /**< @internal Setup a transmit queue of an Ethernet device. */
>  
> +typedef int (*eth_rx_enable_intr_t)(struct rte_eth_dev *dev,
> +				    uint16_t rx_queue_id);
> +/**< @internal Enable interrupt of a receive queue of an Ethernet device. */
> +
> +typedef int (*eth_rx_disable_intr_t)(struct rte_eth_dev *dev,
> +				    uint16_t rx_queue_id);
> +/**< @internal Disable interrupt of a receive queue of an Ethernet device. */
> +
>  typedef void (*eth_queue_release_t)(void *queue);
>  /**< @internal Release memory resources allocated by given RX/TX queue. */
>  
> @@ -1445,6 +1455,8 @@ struct eth_dev_ops {
>  	eth_queue_start_t          tx_queue_start;/**< Start TX for a queue.*/
>  	eth_queue_stop_t           tx_queue_stop;/**< Stop TX for a queue.*/
>  	eth_rx_queue_setup_t       rx_queue_setup;/**< Set up device RX queue.*/
> +	eth_rx_enable_intr_t       rx_queue_intr_enable; /**< Enable Rx queue interrupt. */
> +	eth_rx_disable_intr_t      rx_queue_intr_disable; /**< Disable Rx queue interrupt.*/
>  	eth_queue_release_t        rx_queue_release;/**< Release RX queue.*/
>  	eth_rx_queue_count_t       rx_queue_count; /**< Get Rx queue count. */
>  	eth_rx_descriptor_done_t   rx_descriptor_done;  /**< Check rxd DD bit */
> @@ -2811,6 +2823,51 @@ void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
>  				enum rte_eth_event_type event);
>  
>  /**
> + * When there is no rx packet coming in Rx Queue for a long time, we can
> + * sleep lcore related to RX Queue for power saving, and enable rx interrupt
> + * to be triggered when rx packect arrives.
> + *
> + * The rte_eth_dev_rx_queue_intr_enable() function enables rx queue
> + * interrupt on specific rx queue of a port.
> + *
> + * @param port_id
> + *   The port identifier of the Ethernet device.
> + * @param queue_id
> + *   The index of the receive queue from which to retrieve input packets.
> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> + *   to rte_eth_dev_configure().
> + * @return
> + *   - (0) if successful.
> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> + *     that operation.
> + *   - (-ENODEV) if *port_id* invalid.
> + */
> +int rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> +				uint16_t queue_id);
> +
> +/**
> + * When lcore wakes up from rx interrupt indicating packet coming, disable rx
> + * interrupt and returns to polling mode.
> + *
> + * The rte_eth_dev_rx_queue_intr_disable() function disables rx queue
> + * interrupt on specific rx queue of a port.
> + *
> + * @param port_id
> + *   The port identifier of the Ethernet device.
> + * @param queue_id
> + *   The index of the receive queue from which to retrieve input packets.
> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> + *   to rte_eth_dev_configure().
> + * @return
> + *   - (0) if successful.
> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> + *     that operation.
> + *   - (-ENODEV) if *port_id* invalid.
> + */
> +int rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> +				uint16_t queue_id);
> +
> +/**
>   * Turn on the LED on the Ethernet device.
>   * This function turns on the LED on the Ethernet device.
>   *
> -- 
> 1.8.1.4
> 
> 
Need to export these functions
Neil
  

On Tue, Feb 17, 2015 at 09:47:15PM +0800, Zhou Danny wrote:
> v3 changes
> - Add return value for interrupt enable/disable functions
> 
> Add two dev_ops functions to enable and disable rx queue interrupts
> 
> Signed-off-by: Danny Zhou <danny.zhou@intel.com>
> Tested-by: Yong Liu <yong.liu@intel.com>
> ---
>  lib/librte_ether/rte_ethdev.c | 43 ++++++++++++++++++++++++++++++++
>  lib/librte_ether/rte_ethdev.h | 57 +++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 100 insertions(+)
> 
> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> index ea3a1fb..d27469a 100644
> --- a/lib/librte_ether/rte_ethdev.c
> +++ b/lib/librte_ether/rte_ethdev.c
> @@ -2825,6 +2825,49 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
>  	}
>  	rte_spinlock_unlock(&rte_eth_dev_cb_lock);
>  }
> +
> +int
> +rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> +				uint16_t queue_id)
> +{
> +	struct rte_eth_dev *dev;
> +
> +	if (port_id >= nb_ports) {
> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> +		return (-ENODEV);
> +	}
> +
> +	dev = &rte_eth_devices[port_id];
> +	if (dev == NULL) {
> +		PMD_DEBUG_TRACE("Invalid port device\n");
> +		return (-ENODEV);
> +	}
> +
> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_enable, -ENOTSUP);
> +	return (*dev->dev_ops->rx_queue_intr_enable)(dev, queue_id);
> +}
> +
> +int
> +rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> +				uint16_t queue_id)
> +{
> +	struct rte_eth_dev *dev;
> +
> +	if (port_id >= nb_ports) {
> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> +		return (-ENODEV);
> +	}
> +
> +	dev = &rte_eth_devices[port_id];
> +	if (dev == NULL) {
> +		PMD_DEBUG_TRACE("Invalid port device\n");
> +		return (-ENODEV);
> +	}
> +
> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_disable, -ENOTSUP);
> +	return (*dev->dev_ops->rx_queue_intr_disable)(dev, queue_id);
> +}
> +
>  #ifdef RTE_NIC_BYPASS
>  int rte_eth_dev_bypass_init(uint8_t port_id)
>  {
> diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
> index 84160c3..0f320a9 100644
> --- a/lib/librte_ether/rte_ethdev.h
> +++ b/lib/librte_ether/rte_ethdev.h
> @@ -848,6 +848,8 @@ struct rte_eth_fdir {
>  struct rte_intr_conf {
>  	/** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
>  	uint16_t lsc;
> +	/** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */
> +	uint16_t rxq;
>  };
>  
>  /**
> @@ -1109,6 +1111,14 @@ typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
>  				    const struct rte_eth_txconf *tx_conf);
>  /**< @internal Setup a transmit queue of an Ethernet device. */
>  
> +typedef int (*eth_rx_enable_intr_t)(struct rte_eth_dev *dev,
> +				    uint16_t rx_queue_id);
> +/**< @internal Enable interrupt of a receive queue of an Ethernet device. */
> +
> +typedef int (*eth_rx_disable_intr_t)(struct rte_eth_dev *dev,
> +				    uint16_t rx_queue_id);
> +/**< @internal Disable interrupt of a receive queue of an Ethernet device. */
> +
>  typedef void (*eth_queue_release_t)(void *queue);
>  /**< @internal Release memory resources allocated by given RX/TX queue. */
>  
> @@ -1445,6 +1455,8 @@ struct eth_dev_ops {
>  	eth_queue_start_t          tx_queue_start;/**< Start TX for a queue.*/
>  	eth_queue_stop_t           tx_queue_stop;/**< Stop TX for a queue.*/
>  	eth_rx_queue_setup_t       rx_queue_setup;/**< Set up device RX queue.*/
> +	eth_rx_enable_intr_t       rx_queue_intr_enable; /**< Enable Rx queue interrupt. */
> +	eth_rx_disable_intr_t      rx_queue_intr_disable; /**< Disable Rx queue interrupt.*/
Put these at the end of eth_dev_ops if you want to avoid breaking ABI

>  	eth_queue_release_t        rx_queue_release;/**< Release RX queue.*/
>  	eth_rx_queue_count_t       rx_queue_count; /**< Get Rx queue count. */
>  	eth_rx_descriptor_done_t   rx_descriptor_done;  /**< Check rxd DD bit */
> @@ -2811,6 +2823,51 @@ void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
>  				enum rte_eth_event_type event);
>  
>  /**
> + * When there is no rx packet coming in Rx Queue for a long time, we can
> + * sleep lcore related to RX Queue for power saving, and enable rx interrupt
> + * to be triggered when rx packect arrives.
> + *
> + * The rte_eth_dev_rx_queue_intr_enable() function enables rx queue
> + * interrupt on specific rx queue of a port.
> + *
> + * @param port_id
> + *   The port identifier of the Ethernet device.
> + * @param queue_id
> + *   The index of the receive queue from which to retrieve input packets.
> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> + *   to rte_eth_dev_configure().
> + * @return
> + *   - (0) if successful.
> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> + *     that operation.
> + *   - (-ENODEV) if *port_id* invalid.
> + */
> +int rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> +				uint16_t queue_id);
> +
> +/**
> + * When lcore wakes up from rx interrupt indicating packet coming, disable rx
> + * interrupt and returns to polling mode.
> + *
> + * The rte_eth_dev_rx_queue_intr_disable() function disables rx queue
> + * interrupt on specific rx queue of a port.
> + *
> + * @param port_id
> + *   The port identifier of the Ethernet device.
> + * @param queue_id
> + *   The index of the receive queue from which to retrieve input packets.
> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> + *   to rte_eth_dev_configure().
> + * @return
> + *   - (0) if successful.
> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> + *     that operation.
> + *   - (-ENODEV) if *port_id* invalid.
> + */
> +int rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> +				uint16_t queue_id);
> +
> +/**
>   * Turn on the LED on the Ethernet device.
>   * This function turns on the LED on the Ethernet device.
>   *
> -- 
> 1.8.1.4
> 
>
  

> -----Original Message-----
> From: Neil Horman [mailto:nhorman@tuxdriver.com]
> Sent: Tuesday, February 17, 2015 11:55 PM
> To: Zhou, Danny
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v3 1/5] ethdev: add rx interrupt enable/disable functions
> 
> On Tue, Feb 17, 2015 at 09:47:15PM +0800, Zhou Danny wrote:
> > v3 changes
> > - Add return value for interrupt enable/disable functions
> >
> > Add two dev_ops functions to enable and disable rx queue interrupts
> >
> > Signed-off-by: Danny Zhou <danny.zhou@intel.com>
> > Tested-by: Yong Liu <yong.liu@intel.com>
> > ---
> >  lib/librte_ether/rte_ethdev.c | 43 ++++++++++++++++++++++++++++++++
> >  lib/librte_ether/rte_ethdev.h | 57 +++++++++++++++++++++++++++++++++++++++++++
> >  2 files changed, 100 insertions(+)
> >
> > diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> > index ea3a1fb..d27469a 100644
> > --- a/lib/librte_ether/rte_ethdev.c
> > +++ b/lib/librte_ether/rte_ethdev.c
> > @@ -2825,6 +2825,49 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> >  	}
> >  	rte_spinlock_unlock(&rte_eth_dev_cb_lock);
> >  }
> > +
> > +int
> > +rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> > +				uint16_t queue_id)
> > +{
> > +	struct rte_eth_dev *dev;
> > +
> > +	if (port_id >= nb_ports) {
> > +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> > +		return (-ENODEV);
> > +	}
> > +
> > +	dev = &rte_eth_devices[port_id];
> > +	if (dev == NULL) {
> > +		PMD_DEBUG_TRACE("Invalid port device\n");
> > +		return (-ENODEV);
> > +	}
> > +
> > +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_enable, -ENOTSUP);
> > +	return (*dev->dev_ops->rx_queue_intr_enable)(dev, queue_id);
> > +}
> > +
> > +int
> > +rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> > +				uint16_t queue_id)
> > +{
> > +	struct rte_eth_dev *dev;
> > +
> > +	if (port_id >= nb_ports) {
> > +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> > +		return (-ENODEV);
> > +	}
> > +
> > +	dev = &rte_eth_devices[port_id];
> > +	if (dev == NULL) {
> > +		PMD_DEBUG_TRACE("Invalid port device\n");
> > +		return (-ENODEV);
> > +	}
> > +
> > +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_disable, -ENOTSUP);
> > +	return (*dev->dev_ops->rx_queue_intr_disable)(dev, queue_id);
> > +}
> > +
> >  #ifdef RTE_NIC_BYPASS
> >  int rte_eth_dev_bypass_init(uint8_t port_id)
> >  {
> > diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
> > index 84160c3..0f320a9 100644
> > --- a/lib/librte_ether/rte_ethdev.h
> > +++ b/lib/librte_ether/rte_ethdev.h
> > @@ -848,6 +848,8 @@ struct rte_eth_fdir {
> >  struct rte_intr_conf {
> >  	/** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
> >  	uint16_t lsc;
> > +	/** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */
> > +	uint16_t rxq;
> >  };
> >
> >  /**
> > @@ -1109,6 +1111,14 @@ typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
> >  				    const struct rte_eth_txconf *tx_conf);
> >  /**< @internal Setup a transmit queue of an Ethernet device. */
> >
> > +typedef int (*eth_rx_enable_intr_t)(struct rte_eth_dev *dev,
> > +				    uint16_t rx_queue_id);
> > +/**< @internal Enable interrupt of a receive queue of an Ethernet device. */
> > +
> > +typedef int (*eth_rx_disable_intr_t)(struct rte_eth_dev *dev,
> > +				    uint16_t rx_queue_id);
> > +/**< @internal Disable interrupt of a receive queue of an Ethernet device. */
> > +
> >  typedef void (*eth_queue_release_t)(void *queue);
> >  /**< @internal Release memory resources allocated by given RX/TX queue. */
> >
> > @@ -1445,6 +1455,8 @@ struct eth_dev_ops {
> >  	eth_queue_start_t          tx_queue_start;/**< Start TX for a queue.*/
> >  	eth_queue_stop_t           tx_queue_stop;/**< Stop TX for a queue.*/
> >  	eth_rx_queue_setup_t       rx_queue_setup;/**< Set up device RX queue.*/
> > +	eth_rx_enable_intr_t       rx_queue_intr_enable; /**< Enable Rx queue interrupt. */
> > +	eth_rx_disable_intr_t      rx_queue_intr_disable; /**< Disable Rx queue interrupt.*/
> Put these at the end of eth_dev_ops if you want to avoid breaking ABI

I purposely add those two APIs at current position to ensure all rxq related APIs are declared together
in eth_dev_ops. Anyway, moving them to the end is ok to me for the reason of ABI, though the code looks
a little bit ugly.

> 
> >  	eth_queue_release_t        rx_queue_release;/**< Release RX queue.*/
> >  	eth_rx_queue_count_t       rx_queue_count; /**< Get Rx queue count. */
> >  	eth_rx_descriptor_done_t   rx_descriptor_done;  /**< Check rxd DD bit */
> > @@ -2811,6 +2823,51 @@ void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> >  				enum rte_eth_event_type event);
> >
> >  /**
> > + * When there is no rx packet coming in Rx Queue for a long time, we can
> > + * sleep lcore related to RX Queue for power saving, and enable rx interrupt
> > + * to be triggered when rx packect arrives.
> > + *
> > + * The rte_eth_dev_rx_queue_intr_enable() function enables rx queue
> > + * interrupt on specific rx queue of a port.
> > + *
> > + * @param port_id
> > + *   The port identifier of the Ethernet device.
> > + * @param queue_id
> > + *   The index of the receive queue from which to retrieve input packets.
> > + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> > + *   to rte_eth_dev_configure().
> > + * @return
> > + *   - (0) if successful.
> > + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> > + *     that operation.
> > + *   - (-ENODEV) if *port_id* invalid.
> > + */
> > +int rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> > +				uint16_t queue_id);
> > +
> > +/**
> > + * When lcore wakes up from rx interrupt indicating packet coming, disable rx
> > + * interrupt and returns to polling mode.
> > + *
> > + * The rte_eth_dev_rx_queue_intr_disable() function disables rx queue
> > + * interrupt on specific rx queue of a port.
> > + *
> > + * @param port_id
> > + *   The port identifier of the Ethernet device.
> > + * @param queue_id
> > + *   The index of the receive queue from which to retrieve input packets.
> > + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> > + *   to rte_eth_dev_configure().
> > + * @return
> > + *   - (0) if successful.
> > + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> > + *     that operation.
> > + *   - (-ENODEV) if *port_id* invalid.
> > + */
> > +int rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> > +				uint16_t queue_id);
> > +
> > +/**
> >   * Turn on the LED on the Ethernet device.
> >   * This function turns on the LED on the Ethernet device.
> >   *
> > --
> > 1.8.1.4
> >
> >
  

> -----Original Message-----
> From: Neil Horman [mailto:nhorman@tuxdriver.com]
> Sent: Tuesday, February 17, 2015 11:53 PM
> To: Zhou, Danny
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v3 1/5] ethdev: add rx interrupt enable/disable functions
> 
> On Tue, Feb 17, 2015 at 09:47:15PM +0800, Zhou Danny wrote:
> > v3 changes
> > - Add return value for interrupt enable/disable functions
> >
> > Add two dev_ops functions to enable and disable rx queue interrupts
> >
> > Signed-off-by: Danny Zhou <danny.zhou@intel.com>
> > Tested-by: Yong Liu <yong.liu@intel.com>
> > ---
> >  lib/librte_ether/rte_ethdev.c | 43 ++++++++++++++++++++++++++++++++
> >  lib/librte_ether/rte_ethdev.h | 57 +++++++++++++++++++++++++++++++++++++++++++
> >  2 files changed, 100 insertions(+)
> >
> > diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> > index ea3a1fb..d27469a 100644
> > --- a/lib/librte_ether/rte_ethdev.c
> > +++ b/lib/librte_ether/rte_ethdev.c
> > @@ -2825,6 +2825,49 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> >  	}
> >  	rte_spinlock_unlock(&rte_eth_dev_cb_lock);
> >  }
> > +
> > +int
> > +rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> > +				uint16_t queue_id)
> > +{
> > +	struct rte_eth_dev *dev;
> > +
> > +	if (port_id >= nb_ports) {
> > +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> > +		return (-ENODEV);
> > +	}
> > +
> > +	dev = &rte_eth_devices[port_id];
> > +	if (dev == NULL) {
> > +		PMD_DEBUG_TRACE("Invalid port device\n");
> > +		return (-ENODEV);
> > +	}
> > +
> > +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_enable, -ENOTSUP);
> > +	return (*dev->dev_ops->rx_queue_intr_enable)(dev, queue_id);
> > +}
> > +
> > +int
> > +rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> > +				uint16_t queue_id)
> > +{
> > +	struct rte_eth_dev *dev;
> > +
> > +	if (port_id >= nb_ports) {
> > +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> > +		return (-ENODEV);
> > +	}
> > +
> > +	dev = &rte_eth_devices[port_id];
> > +	if (dev == NULL) {
> > +		PMD_DEBUG_TRACE("Invalid port device\n");
> > +		return (-ENODEV);
> > +	}
> > +
> > +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_disable, -ENOTSUP);
> > +	return (*dev->dev_ops->rx_queue_intr_disable)(dev, queue_id);
> > +}
> > +
> >  #ifdef RTE_NIC_BYPASS
> >  int rte_eth_dev_bypass_init(uint8_t port_id)
> >  {
> > diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
> > index 84160c3..0f320a9 100644
> > --- a/lib/librte_ether/rte_ethdev.h
> > +++ b/lib/librte_ether/rte_ethdev.h
> > @@ -848,6 +848,8 @@ struct rte_eth_fdir {
> >  struct rte_intr_conf {
> >  	/** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
> >  	uint16_t lsc;
> > +	/** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */
> > +	uint16_t rxq;
> >  };
> >
> >  /**
> > @@ -1109,6 +1111,14 @@ typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
> >  				    const struct rte_eth_txconf *tx_conf);
> >  /**< @internal Setup a transmit queue of an Ethernet device. */
> >
> > +typedef int (*eth_rx_enable_intr_t)(struct rte_eth_dev *dev,
> > +				    uint16_t rx_queue_id);
> > +/**< @internal Enable interrupt of a receive queue of an Ethernet device. */
> > +
> > +typedef int (*eth_rx_disable_intr_t)(struct rte_eth_dev *dev,
> > +				    uint16_t rx_queue_id);
> > +/**< @internal Disable interrupt of a receive queue of an Ethernet device. */
> > +
> >  typedef void (*eth_queue_release_t)(void *queue);
> >  /**< @internal Release memory resources allocated by given RX/TX queue. */
> >
> > @@ -1445,6 +1455,8 @@ struct eth_dev_ops {
> >  	eth_queue_start_t          tx_queue_start;/**< Start TX for a queue.*/
> >  	eth_queue_stop_t           tx_queue_stop;/**< Stop TX for a queue.*/
> >  	eth_rx_queue_setup_t       rx_queue_setup;/**< Set up device RX queue.*/
> > +	eth_rx_enable_intr_t       rx_queue_intr_enable; /**< Enable Rx queue interrupt. */
> > +	eth_rx_disable_intr_t      rx_queue_intr_disable; /**< Disable Rx queue interrupt.*/
> >  	eth_queue_release_t        rx_queue_release;/**< Release RX queue.*/
> >  	eth_rx_queue_count_t       rx_queue_count; /**< Get Rx queue count. */
> >  	eth_rx_descriptor_done_t   rx_descriptor_done;  /**< Check rxd DD bit */
> > @@ -2811,6 +2823,51 @@ void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> >  				enum rte_eth_event_type event);
> >
> >  /**
> > + * When there is no rx packet coming in Rx Queue for a long time, we can
> > + * sleep lcore related to RX Queue for power saving, and enable rx interrupt
> > + * to be triggered when rx packect arrives.
> > + *
> > + * The rte_eth_dev_rx_queue_intr_enable() function enables rx queue
> > + * interrupt on specific rx queue of a port.
> > + *
> > + * @param port_id
> > + *   The port identifier of the Ethernet device.
> > + * @param queue_id
> > + *   The index of the receive queue from which to retrieve input packets.
> > + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> > + *   to rte_eth_dev_configure().
> > + * @return
> > + *   - (0) if successful.
> > + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> > + *     that operation.
> > + *   - (-ENODEV) if *port_id* invalid.
> > + */
> > +int rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> > +				uint16_t queue_id);
> > +
> > +/**
> > + * When lcore wakes up from rx interrupt indicating packet coming, disable rx
> > + * interrupt and returns to polling mode.
> > + *
> > + * The rte_eth_dev_rx_queue_intr_disable() function disables rx queue
> > + * interrupt on specific rx queue of a port.
> > + *
> > + * @param port_id
> > + *   The port identifier of the Ethernet device.
> > + * @param queue_id
> > + *   The index of the receive queue from which to retrieve input packets.
> > + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> > + *   to rte_eth_dev_configure().
> > + * @return
> > + *   - (0) if successful.
> > + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> > + *     that operation.
> > + *   - (-ENODEV) if *port_id* invalid.
> > + */
> > +int rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> > +				uint16_t queue_id);
> > +
> > +/**
> >   * Turn on the LED on the Ethernet device.
> >   * This function turns on the LED on the Ethernet device.
> >   *
> > --
> > 1.8.1.4
> >
> >
> Need to export these functions
> Neil

Sorry, I do not get it. What do you mean export these functions? They have been 
declared in rte_ethdev.h and defined here in rte_ethdev.c. And caller in 
L3fwd-power example is able to link those two functions in the library.
  

On 19/02/2015 08:06, Zhou, Danny wrote:
>
>> -----Original Message-----
>> From: Neil Horman [mailto:nhorman@tuxdriver.com]
>> Sent: Tuesday, February 17, 2015 11:53 PM
>> To: Zhou, Danny
>> Cc: dev@dpdk.org
>> Subject: Re: [dpdk-dev] [PATCH v3 1/5] ethdev: add rx interrupt enable/disable functions
>>
>> On Tue, Feb 17, 2015 at 09:47:15PM +0800, Zhou Danny wrote:
>>> v3 changes
>>> - Add return value for interrupt enable/disable functions
>>>
>>> Add two dev_ops functions to enable and disable rx queue interrupts
>>>
>>> Signed-off-by: Danny Zhou <danny.zhou@intel.com>
>>> Tested-by: Yong Liu <yong.liu@intel.com>
>>> ---
>>>   lib/librte_ether/rte_ethdev.c | 43 ++++++++++++++++++++++++++++++++
>>>   lib/librte_ether/rte_ethdev.h | 57 +++++++++++++++++++++++++++++++++++++++++++
>>>   2 files changed, 100 insertions(+)
>>>
>>> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
>>> index ea3a1fb..d27469a 100644
>>> --- a/lib/librte_ether/rte_ethdev.c
>>> +++ b/lib/librte_ether/rte_ethdev.c
>>> @@ -2825,6 +2825,49 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
>>>   	}
>>>   	rte_spinlock_unlock(&rte_eth_dev_cb_lock);
>>>   }
>>> +
>>> +int
>>> +rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
>>> +				uint16_t queue_id)
>>> +{
>>> +	struct rte_eth_dev *dev;
>>> +
>>> +	if (port_id >= nb_ports) {
>>> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
>>> +		return (-ENODEV);
>>> +	}
>>> +
>>> +	dev = &rte_eth_devices[port_id];
>>> +	if (dev == NULL) {
>>> +		PMD_DEBUG_TRACE("Invalid port device\n");
>>> +		return (-ENODEV);
>>> +	}
>>> +
>>> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_enable, -ENOTSUP);
>>> +	return (*dev->dev_ops->rx_queue_intr_enable)(dev, queue_id);
>>> +}
>>> +
>>> +int
>>> +rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
>>> +				uint16_t queue_id)
>>> +{
>>> +	struct rte_eth_dev *dev;
>>> +
>>> +	if (port_id >= nb_ports) {
>>> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
>>> +		return (-ENODEV);
>>> +	}
>>> +
>>> +	dev = &rte_eth_devices[port_id];
>>> +	if (dev == NULL) {
>>> +		PMD_DEBUG_TRACE("Invalid port device\n");
>>> +		return (-ENODEV);
>>> +	}
>>> +
>>> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_disable, -ENOTSUP);
>>> +	return (*dev->dev_ops->rx_queue_intr_disable)(dev, queue_id);
>>> +}
>>> +
>>>   #ifdef RTE_NIC_BYPASS
>>>   int rte_eth_dev_bypass_init(uint8_t port_id)
>>>   {
>>> diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
>>> index 84160c3..0f320a9 100644
>>> --- a/lib/librte_ether/rte_ethdev.h
>>> +++ b/lib/librte_ether/rte_ethdev.h
>>> @@ -848,6 +848,8 @@ struct rte_eth_fdir {
>>>   struct rte_intr_conf {
>>>   	/** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
>>>   	uint16_t lsc;
>>> +	/** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */
>>> +	uint16_t rxq;
>>>   };
>>>
>>>   /**
>>> @@ -1109,6 +1111,14 @@ typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
>>>   				    const struct rte_eth_txconf *tx_conf);
>>>   /**< @internal Setup a transmit queue of an Ethernet device. */
>>>
>>> +typedef int (*eth_rx_enable_intr_t)(struct rte_eth_dev *dev,
>>> +				    uint16_t rx_queue_id);
>>> +/**< @internal Enable interrupt of a receive queue of an Ethernet device. */
>>> +
>>> +typedef int (*eth_rx_disable_intr_t)(struct rte_eth_dev *dev,
>>> +				    uint16_t rx_queue_id);
>>> +/**< @internal Disable interrupt of a receive queue of an Ethernet device. */
>>> +
>>>   typedef void (*eth_queue_release_t)(void *queue);
>>>   /**< @internal Release memory resources allocated by given RX/TX queue. */
>>>
>>> @@ -1445,6 +1455,8 @@ struct eth_dev_ops {
>>>   	eth_queue_start_t          tx_queue_start;/**< Start TX for a queue.*/
>>>   	eth_queue_stop_t           tx_queue_stop;/**< Stop TX for a queue.*/
>>>   	eth_rx_queue_setup_t       rx_queue_setup;/**< Set up device RX queue.*/
>>> +	eth_rx_enable_intr_t       rx_queue_intr_enable; /**< Enable Rx queue interrupt. */
>>> +	eth_rx_disable_intr_t      rx_queue_intr_disable; /**< Disable Rx queue interrupt.*/
>>>   	eth_queue_release_t        rx_queue_release;/**< Release RX queue.*/
>>>   	eth_rx_queue_count_t       rx_queue_count; /**< Get Rx queue count. */
>>>   	eth_rx_descriptor_done_t   rx_descriptor_done;  /**< Check rxd DD bit */
>>> @@ -2811,6 +2823,51 @@ void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
>>>   				enum rte_eth_event_type event);
>>>
>>>   /**
>>> + * When there is no rx packet coming in Rx Queue for a long time, we can
>>> + * sleep lcore related to RX Queue for power saving, and enable rx interrupt
>>> + * to be triggered when rx packect arrives.
>>> + *
>>> + * The rte_eth_dev_rx_queue_intr_enable() function enables rx queue
>>> + * interrupt on specific rx queue of a port.
>>> + *
>>> + * @param port_id
>>> + *   The port identifier of the Ethernet device.
>>> + * @param queue_id
>>> + *   The index of the receive queue from which to retrieve input packets.
>>> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
>>> + *   to rte_eth_dev_configure().
>>> + * @return
>>> + *   - (0) if successful.
>>> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
>>> + *     that operation.
>>> + *   - (-ENODEV) if *port_id* invalid.
>>> + */
>>> +int rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
>>> +				uint16_t queue_id);
>>> +
>>> +/**
>>> + * When lcore wakes up from rx interrupt indicating packet coming, disable rx
>>> + * interrupt and returns to polling mode.
>>> + *
>>> + * The rte_eth_dev_rx_queue_intr_disable() function disables rx queue
>>> + * interrupt on specific rx queue of a port.
>>> + *
>>> + * @param port_id
>>> + *   The port identifier of the Ethernet device.
>>> + * @param queue_id
>>> + *   The index of the receive queue from which to retrieve input packets.
>>> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
>>> + *   to rte_eth_dev_configure().
>>> + * @return
>>> + *   - (0) if successful.
>>> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
>>> + *     that operation.
>>> + *   - (-ENODEV) if *port_id* invalid.
>>> + */
>>> +int rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
>>> +				uint16_t queue_id);
>>> +
>>> +/**
>>>    * Turn on the LED on the Ethernet device.
>>>    * This function turns on the LED on the Ethernet device.
>>>    *
>>> --
>>> 1.8.1.4
>>>
>>>
>> Need to export these functions
>> Neil
> Sorry, I do not get it. What do you mean export these functions? They have been
> declared in rte_ethdev.h and defined here in rte_ethdev.c. And caller in
> L3fwd-power example is able to link those two functions in the library.
Hi Danny,

I think what he meant is that you need to add them to the version map 
file so they are accessible when building shared libraries.

Sergio
  

> -----Original Message-----
> From: Gonzalez Monroy, Sergio
> Sent: Thursday, February 19, 2015 4:22 PM
> To: Zhou, Danny; Neil Horman
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v3 1/5] ethdev: add rx interrupt enable/disable functions
> 
> On 19/02/2015 08:06, Zhou, Danny wrote:
> >
> >> -----Original Message-----
> >> From: Neil Horman [mailto:nhorman@tuxdriver.com]
> >> Sent: Tuesday, February 17, 2015 11:53 PM
> >> To: Zhou, Danny
> >> Cc: dev@dpdk.org
> >> Subject: Re: [dpdk-dev] [PATCH v3 1/5] ethdev: add rx interrupt enable/disable functions
> >>
> >> On Tue, Feb 17, 2015 at 09:47:15PM +0800, Zhou Danny wrote:
> >>> v3 changes
> >>> - Add return value for interrupt enable/disable functions
> >>>
> >>> Add two dev_ops functions to enable and disable rx queue interrupts
> >>>
> >>> Signed-off-by: Danny Zhou <danny.zhou@intel.com>
> >>> Tested-by: Yong Liu <yong.liu@intel.com>
> >>> ---
> >>>   lib/librte_ether/rte_ethdev.c | 43 ++++++++++++++++++++++++++++++++
> >>>   lib/librte_ether/rte_ethdev.h | 57 +++++++++++++++++++++++++++++++++++++++++++
> >>>   2 files changed, 100 insertions(+)
> >>>
> >>> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> >>> index ea3a1fb..d27469a 100644
> >>> --- a/lib/librte_ether/rte_ethdev.c
> >>> +++ b/lib/librte_ether/rte_ethdev.c
> >>> @@ -2825,6 +2825,49 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> >>>   	}
> >>>   	rte_spinlock_unlock(&rte_eth_dev_cb_lock);
> >>>   }
> >>> +
> >>> +int
> >>> +rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> >>> +				uint16_t queue_id)
> >>> +{
> >>> +	struct rte_eth_dev *dev;
> >>> +
> >>> +	if (port_id >= nb_ports) {
> >>> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> >>> +		return (-ENODEV);
> >>> +	}
> >>> +
> >>> +	dev = &rte_eth_devices[port_id];
> >>> +	if (dev == NULL) {
> >>> +		PMD_DEBUG_TRACE("Invalid port device\n");
> >>> +		return (-ENODEV);
> >>> +	}
> >>> +
> >>> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_enable, -ENOTSUP);
> >>> +	return (*dev->dev_ops->rx_queue_intr_enable)(dev, queue_id);
> >>> +}
> >>> +
> >>> +int
> >>> +rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> >>> +				uint16_t queue_id)
> >>> +{
> >>> +	struct rte_eth_dev *dev;
> >>> +
> >>> +	if (port_id >= nb_ports) {
> >>> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> >>> +		return (-ENODEV);
> >>> +	}
> >>> +
> >>> +	dev = &rte_eth_devices[port_id];
> >>> +	if (dev == NULL) {
> >>> +		PMD_DEBUG_TRACE("Invalid port device\n");
> >>> +		return (-ENODEV);
> >>> +	}
> >>> +
> >>> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_disable, -ENOTSUP);
> >>> +	return (*dev->dev_ops->rx_queue_intr_disable)(dev, queue_id);
> >>> +}
> >>> +
> >>>   #ifdef RTE_NIC_BYPASS
> >>>   int rte_eth_dev_bypass_init(uint8_t port_id)
> >>>   {
> >>> diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
> >>> index 84160c3..0f320a9 100644
> >>> --- a/lib/librte_ether/rte_ethdev.h
> >>> +++ b/lib/librte_ether/rte_ethdev.h
> >>> @@ -848,6 +848,8 @@ struct rte_eth_fdir {
> >>>   struct rte_intr_conf {
> >>>   	/** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
> >>>   	uint16_t lsc;
> >>> +	/** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */
> >>> +	uint16_t rxq;
> >>>   };
> >>>
> >>>   /**
> >>> @@ -1109,6 +1111,14 @@ typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
> >>>   				    const struct rte_eth_txconf *tx_conf);
> >>>   /**< @internal Setup a transmit queue of an Ethernet device. */
> >>>
> >>> +typedef int (*eth_rx_enable_intr_t)(struct rte_eth_dev *dev,
> >>> +				    uint16_t rx_queue_id);
> >>> +/**< @internal Enable interrupt of a receive queue of an Ethernet device. */
> >>> +
> >>> +typedef int (*eth_rx_disable_intr_t)(struct rte_eth_dev *dev,
> >>> +				    uint16_t rx_queue_id);
> >>> +/**< @internal Disable interrupt of a receive queue of an Ethernet device. */
> >>> +
> >>>   typedef void (*eth_queue_release_t)(void *queue);
> >>>   /**< @internal Release memory resources allocated by given RX/TX queue. */
> >>>
> >>> @@ -1445,6 +1455,8 @@ struct eth_dev_ops {
> >>>   	eth_queue_start_t          tx_queue_start;/**< Start TX for a queue.*/
> >>>   	eth_queue_stop_t           tx_queue_stop;/**< Stop TX for a queue.*/
> >>>   	eth_rx_queue_setup_t       rx_queue_setup;/**< Set up device RX queue.*/
> >>> +	eth_rx_enable_intr_t       rx_queue_intr_enable; /**< Enable Rx queue interrupt. */
> >>> +	eth_rx_disable_intr_t      rx_queue_intr_disable; /**< Disable Rx queue interrupt.*/
> >>>   	eth_queue_release_t        rx_queue_release;/**< Release RX queue.*/
> >>>   	eth_rx_queue_count_t       rx_queue_count; /**< Get Rx queue count. */
> >>>   	eth_rx_descriptor_done_t   rx_descriptor_done;  /**< Check rxd DD bit */
> >>> @@ -2811,6 +2823,51 @@ void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> >>>   				enum rte_eth_event_type event);
> >>>
> >>>   /**
> >>> + * When there is no rx packet coming in Rx Queue for a long time, we can
> >>> + * sleep lcore related to RX Queue for power saving, and enable rx interrupt
> >>> + * to be triggered when rx packect arrives.
> >>> + *
> >>> + * The rte_eth_dev_rx_queue_intr_enable() function enables rx queue
> >>> + * interrupt on specific rx queue of a port.
> >>> + *
> >>> + * @param port_id
> >>> + *   The port identifier of the Ethernet device.
> >>> + * @param queue_id
> >>> + *   The index of the receive queue from which to retrieve input packets.
> >>> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> >>> + *   to rte_eth_dev_configure().
> >>> + * @return
> >>> + *   - (0) if successful.
> >>> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> >>> + *     that operation.
> >>> + *   - (-ENODEV) if *port_id* invalid.
> >>> + */
> >>> +int rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> >>> +				uint16_t queue_id);
> >>> +
> >>> +/**
> >>> + * When lcore wakes up from rx interrupt indicating packet coming, disable rx
> >>> + * interrupt and returns to polling mode.
> >>> + *
> >>> + * The rte_eth_dev_rx_queue_intr_disable() function disables rx queue
> >>> + * interrupt on specific rx queue of a port.
> >>> + *
> >>> + * @param port_id
> >>> + *   The port identifier of the Ethernet device.
> >>> + * @param queue_id
> >>> + *   The index of the receive queue from which to retrieve input packets.
> >>> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> >>> + *   to rte_eth_dev_configure().
> >>> + * @return
> >>> + *   - (0) if successful.
> >>> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> >>> + *     that operation.
> >>> + *   - (-ENODEV) if *port_id* invalid.
> >>> + */
> >>> +int rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> >>> +				uint16_t queue_id);
> >>> +
> >>> +/**
> >>>    * Turn on the LED on the Ethernet device.
> >>>    * This function turns on the LED on the Ethernet device.
> >>>    *
> >>> --
> >>> 1.8.1.4
> >>>
> >>>
> >> Need to export these functions
> >> Neil
> > Sorry, I do not get it. What do you mean export these functions? They have been
> > declared in rte_ethdev.h and defined here in rte_ethdev.c. And caller in
> > L3fwd-power example is able to link those two functions in the library.
> Hi Danny,
> 
> I think what he meant is that you need to add them to the version map
> file so they are accessible when building shared libraries.
> 
> Sergio

Thanks Sergio for pointing this out, I will add them to the version map file in V4 patch.
  

On Thu, Feb 19, 2015 at 07:58:38AM +0000, Zhou, Danny wrote:
> 
> 
> > -----Original Message-----
> > From: Neil Horman [mailto:nhorman@tuxdriver.com]
> > Sent: Tuesday, February 17, 2015 11:55 PM
> > To: Zhou, Danny
> > Cc: dev@dpdk.org
> > Subject: Re: [dpdk-dev] [PATCH v3 1/5] ethdev: add rx interrupt enable/disable functions
> > 
> > On Tue, Feb 17, 2015 at 09:47:15PM +0800, Zhou Danny wrote:
> > > v3 changes
> > > - Add return value for interrupt enable/disable functions
> > >
> > > Add two dev_ops functions to enable and disable rx queue interrupts
> > >
> > > Signed-off-by: Danny Zhou <danny.zhou@intel.com>
> > > Tested-by: Yong Liu <yong.liu@intel.com>
> > > ---
> > >  lib/librte_ether/rte_ethdev.c | 43 ++++++++++++++++++++++++++++++++
> > >  lib/librte_ether/rte_ethdev.h | 57 +++++++++++++++++++++++++++++++++++++++++++
> > >  2 files changed, 100 insertions(+)
> > >
> > > diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> > > index ea3a1fb..d27469a 100644
> > > --- a/lib/librte_ether/rte_ethdev.c
> > > +++ b/lib/librte_ether/rte_ethdev.c
> > > @@ -2825,6 +2825,49 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> > >  	}
> > >  	rte_spinlock_unlock(&rte_eth_dev_cb_lock);
> > >  }
> > > +
> > > +int
> > > +rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> > > +				uint16_t queue_id)
> > > +{
> > > +	struct rte_eth_dev *dev;
> > > +
> > > +	if (port_id >= nb_ports) {
> > > +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> > > +		return (-ENODEV);
> > > +	}
> > > +
> > > +	dev = &rte_eth_devices[port_id];
> > > +	if (dev == NULL) {
> > > +		PMD_DEBUG_TRACE("Invalid port device\n");
> > > +		return (-ENODEV);
> > > +	}
> > > +
> > > +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_enable, -ENOTSUP);
> > > +	return (*dev->dev_ops->rx_queue_intr_enable)(dev, queue_id);
> > > +}
> > > +
> > > +int
> > > +rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> > > +				uint16_t queue_id)
> > > +{
> > > +	struct rte_eth_dev *dev;
> > > +
> > > +	if (port_id >= nb_ports) {
> > > +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> > > +		return (-ENODEV);
> > > +	}
> > > +
> > > +	dev = &rte_eth_devices[port_id];
> > > +	if (dev == NULL) {
> > > +		PMD_DEBUG_TRACE("Invalid port device\n");
> > > +		return (-ENODEV);
> > > +	}
> > > +
> > > +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_disable, -ENOTSUP);
> > > +	return (*dev->dev_ops->rx_queue_intr_disable)(dev, queue_id);
> > > +}
> > > +
> > >  #ifdef RTE_NIC_BYPASS
> > >  int rte_eth_dev_bypass_init(uint8_t port_id)
> > >  {
> > > diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
> > > index 84160c3..0f320a9 100644
> > > --- a/lib/librte_ether/rte_ethdev.h
> > > +++ b/lib/librte_ether/rte_ethdev.h
> > > @@ -848,6 +848,8 @@ struct rte_eth_fdir {
> > >  struct rte_intr_conf {
> > >  	/** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
> > >  	uint16_t lsc;
> > > +	/** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */
> > > +	uint16_t rxq;
> > >  };
> > >
> > >  /**
> > > @@ -1109,6 +1111,14 @@ typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
> > >  				    const struct rte_eth_txconf *tx_conf);
> > >  /**< @internal Setup a transmit queue of an Ethernet device. */
> > >
> > > +typedef int (*eth_rx_enable_intr_t)(struct rte_eth_dev *dev,
> > > +				    uint16_t rx_queue_id);
> > > +/**< @internal Enable interrupt of a receive queue of an Ethernet device. */
> > > +
> > > +typedef int (*eth_rx_disable_intr_t)(struct rte_eth_dev *dev,
> > > +				    uint16_t rx_queue_id);
> > > +/**< @internal Disable interrupt of a receive queue of an Ethernet device. */
> > > +
> > >  typedef void (*eth_queue_release_t)(void *queue);
> > >  /**< @internal Release memory resources allocated by given RX/TX queue. */
> > >
> > > @@ -1445,6 +1455,8 @@ struct eth_dev_ops {
> > >  	eth_queue_start_t          tx_queue_start;/**< Start TX for a queue.*/
> > >  	eth_queue_stop_t           tx_queue_stop;/**< Stop TX for a queue.*/
> > >  	eth_rx_queue_setup_t       rx_queue_setup;/**< Set up device RX queue.*/
> > > +	eth_rx_enable_intr_t       rx_queue_intr_enable; /**< Enable Rx queue interrupt. */
> > > +	eth_rx_disable_intr_t      rx_queue_intr_disable; /**< Disable Rx queue interrupt.*/
> > Put these at the end of eth_dev_ops if you want to avoid breaking ABI
> 
> I purposely add those two APIs at current position to ensure all rxq related APIs are declared together
> in eth_dev_ops. Anyway, moving them to the end is ok to me for the reason of ABI, though the code looks
> a little bit ugly.
> 
Right, pretty isn't a reason to break ABI as noted in the release notes doc

Neil

> > 
> > >  	eth_queue_release_t        rx_queue_release;/**< Release RX queue.*/
> > >  	eth_rx_queue_count_t       rx_queue_count; /**< Get Rx queue count. */
> > >  	eth_rx_descriptor_done_t   rx_descriptor_done;  /**< Check rxd DD bit */
> > > @@ -2811,6 +2823,51 @@ void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> > >  				enum rte_eth_event_type event);
> > >
> > >  /**
> > > + * When there is no rx packet coming in Rx Queue for a long time, we can
> > > + * sleep lcore related to RX Queue for power saving, and enable rx interrupt
> > > + * to be triggered when rx packect arrives.
> > > + *
> > > + * The rte_eth_dev_rx_queue_intr_enable() function enables rx queue
> > > + * interrupt on specific rx queue of a port.
> > > + *
> > > + * @param port_id
> > > + *   The port identifier of the Ethernet device.
> > > + * @param queue_id
> > > + *   The index of the receive queue from which to retrieve input packets.
> > > + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> > > + *   to rte_eth_dev_configure().
> > > + * @return
> > > + *   - (0) if successful.
> > > + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> > > + *     that operation.
> > > + *   - (-ENODEV) if *port_id* invalid.
> > > + */
> > > +int rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> > > +				uint16_t queue_id);
> > > +
> > > +/**
> > > + * When lcore wakes up from rx interrupt indicating packet coming, disable rx
> > > + * interrupt and returns to polling mode.
> > > + *
> > > + * The rte_eth_dev_rx_queue_intr_disable() function disables rx queue
> > > + * interrupt on specific rx queue of a port.
> > > + *
> > > + * @param port_id
> > > + *   The port identifier of the Ethernet device.
> > > + * @param queue_id
> > > + *   The index of the receive queue from which to retrieve input packets.
> > > + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> > > + *   to rte_eth_dev_configure().
> > > + * @return
> > > + *   - (0) if successful.
> > > + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> > > + *     that operation.
> > > + *   - (-ENODEV) if *port_id* invalid.
> > > + */
> > > +int rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> > > +				uint16_t queue_id);
> > > +
> > > +/**
> > >   * Turn on the LED on the Ethernet device.
> > >   * This function turns on the LED on the Ethernet device.
> > >   *
> > > --
> > > 1.8.1.4
> > >
> > >
>
  

On Thu, Feb 19, 2015 at 08:34:22AM +0000, Zhou, Danny wrote:
> 
> 
> > -----Original Message-----
> > From: Gonzalez Monroy, Sergio
> > Sent: Thursday, February 19, 2015 4:22 PM
> > To: Zhou, Danny; Neil Horman
> > Cc: dev@dpdk.org
> > Subject: Re: [dpdk-dev] [PATCH v3 1/5] ethdev: add rx interrupt enable/disable functions
> > 
> > On 19/02/2015 08:06, Zhou, Danny wrote:
> > >
> > >> -----Original Message-----
> > >> From: Neil Horman [mailto:nhorman@tuxdriver.com]
> > >> Sent: Tuesday, February 17, 2015 11:53 PM
> > >> To: Zhou, Danny
> > >> Cc: dev@dpdk.org
> > >> Subject: Re: [dpdk-dev] [PATCH v3 1/5] ethdev: add rx interrupt enable/disable functions
> > >>
> > >> On Tue, Feb 17, 2015 at 09:47:15PM +0800, Zhou Danny wrote:
> > >>> v3 changes
> > >>> - Add return value for interrupt enable/disable functions
> > >>>
> > >>> Add two dev_ops functions to enable and disable rx queue interrupts
> > >>>
> > >>> Signed-off-by: Danny Zhou <danny.zhou@intel.com>
> > >>> Tested-by: Yong Liu <yong.liu@intel.com>
> > >>> ---
> > >>>   lib/librte_ether/rte_ethdev.c | 43 ++++++++++++++++++++++++++++++++
> > >>>   lib/librte_ether/rte_ethdev.h | 57 +++++++++++++++++++++++++++++++++++++++++++
> > >>>   2 files changed, 100 insertions(+)
> > >>>
> > >>> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> > >>> index ea3a1fb..d27469a 100644
> > >>> --- a/lib/librte_ether/rte_ethdev.c
> > >>> +++ b/lib/librte_ether/rte_ethdev.c
> > >>> @@ -2825,6 +2825,49 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> > >>>   	}
> > >>>   	rte_spinlock_unlock(&rte_eth_dev_cb_lock);
> > >>>   }
> > >>> +
> > >>> +int
> > >>> +rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> > >>> +				uint16_t queue_id)
> > >>> +{
> > >>> +	struct rte_eth_dev *dev;
> > >>> +
> > >>> +	if (port_id >= nb_ports) {
> > >>> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> > >>> +		return (-ENODEV);
> > >>> +	}
> > >>> +
> > >>> +	dev = &rte_eth_devices[port_id];
> > >>> +	if (dev == NULL) {
> > >>> +		PMD_DEBUG_TRACE("Invalid port device\n");
> > >>> +		return (-ENODEV);
> > >>> +	}
> > >>> +
> > >>> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_enable, -ENOTSUP);
> > >>> +	return (*dev->dev_ops->rx_queue_intr_enable)(dev, queue_id);
> > >>> +}
> > >>> +
> > >>> +int
> > >>> +rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> > >>> +				uint16_t queue_id)
> > >>> +{
> > >>> +	struct rte_eth_dev *dev;
> > >>> +
> > >>> +	if (port_id >= nb_ports) {
> > >>> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> > >>> +		return (-ENODEV);
> > >>> +	}
> > >>> +
> > >>> +	dev = &rte_eth_devices[port_id];
> > >>> +	if (dev == NULL) {
> > >>> +		PMD_DEBUG_TRACE("Invalid port device\n");
> > >>> +		return (-ENODEV);
> > >>> +	}
> > >>> +
> > >>> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_disable, -ENOTSUP);
> > >>> +	return (*dev->dev_ops->rx_queue_intr_disable)(dev, queue_id);
> > >>> +}
> > >>> +
> > >>>   #ifdef RTE_NIC_BYPASS
> > >>>   int rte_eth_dev_bypass_init(uint8_t port_id)
> > >>>   {
> > >>> diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
> > >>> index 84160c3..0f320a9 100644
> > >>> --- a/lib/librte_ether/rte_ethdev.h
> > >>> +++ b/lib/librte_ether/rte_ethdev.h
> > >>> @@ -848,6 +848,8 @@ struct rte_eth_fdir {
> > >>>   struct rte_intr_conf {
> > >>>   	/** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
> > >>>   	uint16_t lsc;
> > >>> +	/** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */
> > >>> +	uint16_t rxq;
> > >>>   };
> > >>>
> > >>>   /**
> > >>> @@ -1109,6 +1111,14 @@ typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
> > >>>   				    const struct rte_eth_txconf *tx_conf);
> > >>>   /**< @internal Setup a transmit queue of an Ethernet device. */
> > >>>
> > >>> +typedef int (*eth_rx_enable_intr_t)(struct rte_eth_dev *dev,
> > >>> +				    uint16_t rx_queue_id);
> > >>> +/**< @internal Enable interrupt of a receive queue of an Ethernet device. */
> > >>> +
> > >>> +typedef int (*eth_rx_disable_intr_t)(struct rte_eth_dev *dev,
> > >>> +				    uint16_t rx_queue_id);
> > >>> +/**< @internal Disable interrupt of a receive queue of an Ethernet device. */
> > >>> +
> > >>>   typedef void (*eth_queue_release_t)(void *queue);
> > >>>   /**< @internal Release memory resources allocated by given RX/TX queue. */
> > >>>
> > >>> @@ -1445,6 +1455,8 @@ struct eth_dev_ops {
> > >>>   	eth_queue_start_t          tx_queue_start;/**< Start TX for a queue.*/
> > >>>   	eth_queue_stop_t           tx_queue_stop;/**< Stop TX for a queue.*/
> > >>>   	eth_rx_queue_setup_t       rx_queue_setup;/**< Set up device RX queue.*/
> > >>> +	eth_rx_enable_intr_t       rx_queue_intr_enable; /**< Enable Rx queue interrupt. */
> > >>> +	eth_rx_disable_intr_t      rx_queue_intr_disable; /**< Disable Rx queue interrupt.*/
> > >>>   	eth_queue_release_t        rx_queue_release;/**< Release RX queue.*/
> > >>>   	eth_rx_queue_count_t       rx_queue_count; /**< Get Rx queue count. */
> > >>>   	eth_rx_descriptor_done_t   rx_descriptor_done;  /**< Check rxd DD bit */
> > >>> @@ -2811,6 +2823,51 @@ void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> > >>>   				enum rte_eth_event_type event);
> > >>>
> > >>>   /**
> > >>> + * When there is no rx packet coming in Rx Queue for a long time, we can
> > >>> + * sleep lcore related to RX Queue for power saving, and enable rx interrupt
> > >>> + * to be triggered when rx packect arrives.
> > >>> + *
> > >>> + * The rte_eth_dev_rx_queue_intr_enable() function enables rx queue
> > >>> + * interrupt on specific rx queue of a port.
> > >>> + *
> > >>> + * @param port_id
> > >>> + *   The port identifier of the Ethernet device.
> > >>> + * @param queue_id
> > >>> + *   The index of the receive queue from which to retrieve input packets.
> > >>> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> > >>> + *   to rte_eth_dev_configure().
> > >>> + * @return
> > >>> + *   - (0) if successful.
> > >>> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> > >>> + *     that operation.
> > >>> + *   - (-ENODEV) if *port_id* invalid.
> > >>> + */
> > >>> +int rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> > >>> +				uint16_t queue_id);
> > >>> +
> > >>> +/**
> > >>> + * When lcore wakes up from rx interrupt indicating packet coming, disable rx
> > >>> + * interrupt and returns to polling mode.
> > >>> + *
> > >>> + * The rte_eth_dev_rx_queue_intr_disable() function disables rx queue
> > >>> + * interrupt on specific rx queue of a port.
> > >>> + *
> > >>> + * @param port_id
> > >>> + *   The port identifier of the Ethernet device.
> > >>> + * @param queue_id
> > >>> + *   The index of the receive queue from which to retrieve input packets.
> > >>> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> > >>> + *   to rte_eth_dev_configure().
> > >>> + * @return
> > >>> + *   - (0) if successful.
> > >>> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> > >>> + *     that operation.
> > >>> + *   - (-ENODEV) if *port_id* invalid.
> > >>> + */
> > >>> +int rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> > >>> +				uint16_t queue_id);
> > >>> +
> > >>> +/**
> > >>>    * Turn on the LED on the Ethernet device.
> > >>>    * This function turns on the LED on the Ethernet device.
> > >>>    *
> > >>> --
> > >>> 1.8.1.4
> > >>>
> > >>>
> > >> Need to export these functions
> > >> Neil
> > > Sorry, I do not get it. What do you mean export these functions? They have been
> > > declared in rte_ethdev.h and defined here in rte_ethdev.c. And caller in
> > > L3fwd-power example is able to link those two functions in the library.
> > Hi Danny,
> > 
> > I think what he meant is that you need to add them to the version map
> > file so they are accessible when building shared libraries.
> > 
> > Sergio
> 
> Thanks Sergio for pointing this out, I will add them to the version map file in V4 patch.
> 
Also, since you sort of called yourself out on this, maybe try building and testing
with shared libraries as well as statically linked ones :)

Neil
  

> -----Original Message-----
> From: Neil Horman [mailto:nhorman@tuxdriver.com]
> Sent: Thursday, February 19, 2015 9:10 PM
> To: Zhou, Danny
> Cc: Gonzalez Monroy, Sergio; dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v3 1/5] ethdev: add rx interrupt enable/disable functions
> 
> On Thu, Feb 19, 2015 at 08:34:22AM +0000, Zhou, Danny wrote:
> >
> >
> > > -----Original Message-----
> > > From: Gonzalez Monroy, Sergio
> > > Sent: Thursday, February 19, 2015 4:22 PM
> > > To: Zhou, Danny; Neil Horman
> > > Cc: dev@dpdk.org
> > > Subject: Re: [dpdk-dev] [PATCH v3 1/5] ethdev: add rx interrupt enable/disable functions
> > >
> > > On 19/02/2015 08:06, Zhou, Danny wrote:
> > > >
> > > >> -----Original Message-----
> > > >> From: Neil Horman [mailto:nhorman@tuxdriver.com]
> > > >> Sent: Tuesday, February 17, 2015 11:53 PM
> > > >> To: Zhou, Danny
> > > >> Cc: dev@dpdk.org
> > > >> Subject: Re: [dpdk-dev] [PATCH v3 1/5] ethdev: add rx interrupt enable/disable functions
> > > >>
> > > >> On Tue, Feb 17, 2015 at 09:47:15PM +0800, Zhou Danny wrote:
> > > >>> v3 changes
> > > >>> - Add return value for interrupt enable/disable functions
> > > >>>
> > > >>> Add two dev_ops functions to enable and disable rx queue interrupts
> > > >>>
> > > >>> Signed-off-by: Danny Zhou <danny.zhou@intel.com>
> > > >>> Tested-by: Yong Liu <yong.liu@intel.com>
> > > >>> ---
> > > >>>   lib/librte_ether/rte_ethdev.c | 43 ++++++++++++++++++++++++++++++++
> > > >>>   lib/librte_ether/rte_ethdev.h | 57 +++++++++++++++++++++++++++++++++++++++++++
> > > >>>   2 files changed, 100 insertions(+)
> > > >>>
> > > >>> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> > > >>> index ea3a1fb..d27469a 100644
> > > >>> --- a/lib/librte_ether/rte_ethdev.c
> > > >>> +++ b/lib/librte_ether/rte_ethdev.c
> > > >>> @@ -2825,6 +2825,49 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> > > >>>   	}
> > > >>>   	rte_spinlock_unlock(&rte_eth_dev_cb_lock);
> > > >>>   }
> > > >>> +
> > > >>> +int
> > > >>> +rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> > > >>> +				uint16_t queue_id)
> > > >>> +{
> > > >>> +	struct rte_eth_dev *dev;
> > > >>> +
> > > >>> +	if (port_id >= nb_ports) {
> > > >>> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> > > >>> +		return (-ENODEV);
> > > >>> +	}
> > > >>> +
> > > >>> +	dev = &rte_eth_devices[port_id];
> > > >>> +	if (dev == NULL) {
> > > >>> +		PMD_DEBUG_TRACE("Invalid port device\n");
> > > >>> +		return (-ENODEV);
> > > >>> +	}
> > > >>> +
> > > >>> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_enable, -ENOTSUP);
> > > >>> +	return (*dev->dev_ops->rx_queue_intr_enable)(dev, queue_id);
> > > >>> +}
> > > >>> +
> > > >>> +int
> > > >>> +rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> > > >>> +				uint16_t queue_id)
> > > >>> +{
> > > >>> +	struct rte_eth_dev *dev;
> > > >>> +
> > > >>> +	if (port_id >= nb_ports) {
> > > >>> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> > > >>> +		return (-ENODEV);
> > > >>> +	}
> > > >>> +
> > > >>> +	dev = &rte_eth_devices[port_id];
> > > >>> +	if (dev == NULL) {
> > > >>> +		PMD_DEBUG_TRACE("Invalid port device\n");
> > > >>> +		return (-ENODEV);
> > > >>> +	}
> > > >>> +
> > > >>> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_intr_disable, -ENOTSUP);
> > > >>> +	return (*dev->dev_ops->rx_queue_intr_disable)(dev, queue_id);
> > > >>> +}
> > > >>> +
> > > >>>   #ifdef RTE_NIC_BYPASS
> > > >>>   int rte_eth_dev_bypass_init(uint8_t port_id)
> > > >>>   {
> > > >>> diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
> > > >>> index 84160c3..0f320a9 100644
> > > >>> --- a/lib/librte_ether/rte_ethdev.h
> > > >>> +++ b/lib/librte_ether/rte_ethdev.h
> > > >>> @@ -848,6 +848,8 @@ struct rte_eth_fdir {
> > > >>>   struct rte_intr_conf {
> > > >>>   	/** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
> > > >>>   	uint16_t lsc;
> > > >>> +	/** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */
> > > >>> +	uint16_t rxq;
> > > >>>   };
> > > >>>
> > > >>>   /**
> > > >>> @@ -1109,6 +1111,14 @@ typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
> > > >>>   				    const struct rte_eth_txconf *tx_conf);
> > > >>>   /**< @internal Setup a transmit queue of an Ethernet device. */
> > > >>>
> > > >>> +typedef int (*eth_rx_enable_intr_t)(struct rte_eth_dev *dev,
> > > >>> +				    uint16_t rx_queue_id);
> > > >>> +/**< @internal Enable interrupt of a receive queue of an Ethernet device. */
> > > >>> +
> > > >>> +typedef int (*eth_rx_disable_intr_t)(struct rte_eth_dev *dev,
> > > >>> +				    uint16_t rx_queue_id);
> > > >>> +/**< @internal Disable interrupt of a receive queue of an Ethernet device. */
> > > >>> +
> > > >>>   typedef void (*eth_queue_release_t)(void *queue);
> > > >>>   /**< @internal Release memory resources allocated by given RX/TX queue. */
> > > >>>
> > > >>> @@ -1445,6 +1455,8 @@ struct eth_dev_ops {
> > > >>>   	eth_queue_start_t          tx_queue_start;/**< Start TX for a queue.*/
> > > >>>   	eth_queue_stop_t           tx_queue_stop;/**< Stop TX for a queue.*/
> > > >>>   	eth_rx_queue_setup_t       rx_queue_setup;/**< Set up device RX queue.*/
> > > >>> +	eth_rx_enable_intr_t       rx_queue_intr_enable; /**< Enable Rx queue interrupt. */
> > > >>> +	eth_rx_disable_intr_t      rx_queue_intr_disable; /**< Disable Rx queue interrupt.*/
> > > >>>   	eth_queue_release_t        rx_queue_release;/**< Release RX queue.*/
> > > >>>   	eth_rx_queue_count_t       rx_queue_count; /**< Get Rx queue count. */
> > > >>>   	eth_rx_descriptor_done_t   rx_descriptor_done;  /**< Check rxd DD bit */
> > > >>> @@ -2811,6 +2823,51 @@ void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> > > >>>   				enum rte_eth_event_type event);
> > > >>>
> > > >>>   /**
> > > >>> + * When there is no rx packet coming in Rx Queue for a long time, we can
> > > >>> + * sleep lcore related to RX Queue for power saving, and enable rx interrupt
> > > >>> + * to be triggered when rx packect arrives.
> > > >>> + *
> > > >>> + * The rte_eth_dev_rx_queue_intr_enable() function enables rx queue
> > > >>> + * interrupt on specific rx queue of a port.
> > > >>> + *
> > > >>> + * @param port_id
> > > >>> + *   The port identifier of the Ethernet device.
> > > >>> + * @param queue_id
> > > >>> + *   The index of the receive queue from which to retrieve input packets.
> > > >>> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> > > >>> + *   to rte_eth_dev_configure().
> > > >>> + * @return
> > > >>> + *   - (0) if successful.
> > > >>> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> > > >>> + *     that operation.
> > > >>> + *   - (-ENODEV) if *port_id* invalid.
> > > >>> + */
> > > >>> +int rte_eth_dev_rx_queue_intr_enable(uint8_t port_id,
> > > >>> +				uint16_t queue_id);
> > > >>> +
> > > >>> +/**
> > > >>> + * When lcore wakes up from rx interrupt indicating packet coming, disable rx
> > > >>> + * interrupt and returns to polling mode.
> > > >>> + *
> > > >>> + * The rte_eth_dev_rx_queue_intr_disable() function disables rx queue
> > > >>> + * interrupt on specific rx queue of a port.
> > > >>> + *
> > > >>> + * @param port_id
> > > >>> + *   The port identifier of the Ethernet device.
> > > >>> + * @param queue_id
> > > >>> + *   The index of the receive queue from which to retrieve input packets.
> > > >>> + *   The value must be in the range [0, nb_rx_queue - 1] previously supplied
> > > >>> + *   to rte_eth_dev_configure().
> > > >>> + * @return
> > > >>> + *   - (0) if successful.
> > > >>> + *   - (-ENOTSUP) if underlying hardware OR driver doesn't support
> > > >>> + *     that operation.
> > > >>> + *   - (-ENODEV) if *port_id* invalid.
> > > >>> + */
> > > >>> +int rte_eth_dev_rx_queue_intr_disable(uint8_t port_id,
> > > >>> +				uint16_t queue_id);
> > > >>> +
> > > >>> +/**
> > > >>>    * Turn on the LED on the Ethernet device.
> > > >>>    * This function turns on the LED on the Ethernet device.
> > > >>>    *
> > > >>> --
> > > >>> 1.8.1.4
> > > >>>
> > > >>>
> > > >> Need to export these functions
> > > >> Neil
> > > > Sorry, I do not get it. What do you mean export these functions? They have been
> > > > declared in rte_ethdev.h and defined here in rte_ethdev.c. And caller in
> > > > L3fwd-power example is able to link those two functions in the library.
> > > Hi Danny,
> > >
> > > I think what he meant is that you need to add them to the version map
> > > file so they are accessible when building shared libraries.
> > >
> > > Sergio
> >
> > Thanks Sergio for pointing this out, I will add them to the version map file in V4 patch.
> >
> Also, since you sort of called yourself out on this, maybe try building and testing
> with shared libraries as well as statically linked ones :)
> 
> Neil

Well, I have try to build with shared libraries and send out V4 patch which Yong could test.