Re: [dpdk-dev] [PATCH 1/2] bond: extract common code to separate functions

[Neil Horman <nhorman@tuxdriver.com>]

On Wed, Sep 17, 2014 at 03:21:52PM +0100, Pawel Wodkowski wrote:
> Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
> Reviewed-by: Declan Doherty <declan.doherty@intel.com>
> ---
>  lib/librte_pmd_bond/rte_eth_bond_api.c     |   59 +++++++++++++++++++++-------
>  lib/librte_pmd_bond/rte_eth_bond_pmd.c     |   47 ++++++++++++++--------
>  lib/librte_pmd_bond/rte_eth_bond_private.h |   30 ++++++++++++--
>  3 files changed, 102 insertions(+), 34 deletions(-)
> 
> diff --git a/lib/librte_pmd_bond/rte_eth_bond_api.c b/lib/librte_pmd_bond/rte_eth_bond_api.c
> index dd33119..460df65 100644
> --- a/lib/librte_pmd_bond/rte_eth_bond_api.c
> +++ b/lib/librte_pmd_bond/rte_eth_bond_api.c
> @@ -31,6 +31,8 @@
>   *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>   */
>  
> +#include <string.h>
> +
>  #include <rte_mbuf.h>
>  #include <rte_malloc.h>
>  #include <rte_ethdev.h>
> @@ -104,6 +106,39 @@ valid_slave_port_id(uint8_t port_id)
>  	return 0;
>  }
>  
> +void
> +rte_eth_bond_activate_slave(struct rte_eth_dev *eth_dev, uint8_t port_id )
> +{
> +	struct bond_dev_private *internals = eth_dev->data->dev_private;
> +	uint8_t active_count = internals->active_slave_count;
> +
> +	internals->active_slaves[active_count] = port_id;
> +
> +
> +	internals->active_slave_count = active_count + 1;
> +}
> +
> +void
> +rte_eth_bond_deactive_slave(struct rte_eth_dev *eth_dev,
I think you intended for this to be deactivate, not deactive, yes?


> +	uint8_t slave_pos )
> +{
> +	struct bond_dev_private *internals = eth_dev->data->dev_private;
> +	uint8_t active_count = internals->active_slave_count;
> +
> +	active_count--;
> +
> +	/* If slave was not at the end of the list
> +	 * shift active slaves up active array list */
> +	if (slave_pos < active_count) {
> +		memmove(internals->active_slaves + slave_pos,
> +				internals->active_slaves + slave_pos + 1,
> +				(active_count - slave_pos) *
> +					sizeof(internals->active_slaves[0]));
> +	}
> +
> +	internals->active_slave_count = active_count;
> +}
> +
>  uint8_t
>  number_of_sockets(void)
Static?

>  {
> @@ -356,10 +391,8 @@ rte_eth_bond_slave_add(uint8_t bonded_port_id, uint8_t slave_port_id)
>  	if (bonded_eth_dev->data->dev_started) {
>  		rte_eth_link_get_nowait(slave_port_id, &link_props);
>  
> -		 if (link_props.link_status == 1) {
> -			internals->active_slaves[internals->active_slave_count++] =
> -					slave_port_id;
> -		}
> +		 if (link_props.link_status == 1)
> +			rte_eth_bond_activate_slave(bonded_eth_dev, slave_port_id);
>  	}
>  
>  	return 0;
> @@ -373,6 +406,7 @@ err_add:
>  int
>  rte_eth_bond_slave_remove(uint8_t bonded_port_id, uint8_t slave_port_id)
>  {
> +	struct rte_eth_dev *eth_dev;
>  	struct bond_dev_private *internals;
>  	struct slave_conf *slave_conf;
>  
> @@ -386,20 +420,15 @@ rte_eth_bond_slave_remove(uint8_t bonded_port_id, uint8_t slave_port_id)
>  	if (valid_slave_port_id(slave_port_id) != 0)
>  		goto err_del;
>  
> -	internals = rte_eth_devices[bonded_port_id].data->dev_private;
> +	eth_dev = &rte_eth_devices[bonded_port_id];
> +	internals = eth_dev->data->dev_private;
>  
>  	/* first remove from active slave list */
> -	for (i = 0; i < internals->active_slave_count; i++) {
> -		if (internals->active_slaves[i] == slave_port_id)
> -			pos = i;
> -
> -		/* shift active slaves up active array list */
> -		if (pos >= 0 && i < (internals->active_slave_count - 1))
> -			internals->active_slaves[i] = internals->active_slaves[i+1];
> -	}
> +	pos = find_slave_by_id(internals->active_slaves, internals->active_slave_count,
> +			slave_port_id);
>  
> -	if (pos >= 0)
> -		internals->active_slave_count--;
> +	if (pos < internals->active_slave_count)
> +		rte_eth_bond_deactive_slave(eth_dev, pos);
>  
>  	pos = -1;
>  	/* now remove from slave list */
> diff --git a/lib/librte_pmd_bond/rte_eth_bond_pmd.c b/lib/librte_pmd_bond/rte_eth_bond_pmd.c
> index 38cc1ae..482ddb8 100644
> --- a/lib/librte_pmd_bond/rte_eth_bond_pmd.c
> +++ b/lib/librte_pmd_bond/rte_eth_bond_pmd.c
> @@ -447,6 +447,27 @@ link_properties_valid(struct rte_eth_link *bonded_dev_link,
>  }
>  
>  int
> +mac_address_get(struct rte_eth_dev *eth_dev, struct ether_addr *dst_mac_addr)
> +{
> +	struct ether_addr *mac_addr;
> +
> +	mac_addr = eth_dev->data->mac_addrs;
> +
> +	if (eth_dev == NULL) {
> +		RTE_LOG(ERR, PMD, "%s: NULL pointer eth_dev specified\n", __func__);
> +		return -1;
> +	}
> +
> +	if (dst_mac_addr == NULL) {
> +		RTE_LOG(ERR, PMD, "%s: NULL pointer MAC specified\n", __func__);
> +		return -1;
> +	}
> +
> +	ether_addr_copy(mac_addr, dst_mac_addr);
> +	return 0;
> +}
> +
> +int
>  mac_address_set(struct rte_eth_dev *eth_dev, struct ether_addr *new_mac_addr)
>  {
>  	struct ether_addr *mac_addr;
> @@ -817,7 +838,7 @@ bond_ethdev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
>  					0, dev->pci_dev->numa_node);
>  
>  	if (bd_tx_q == NULL)
> -			return -1;
> +		return -1;
>  
>  	bd_tx_q->queue_id = tx_queue_id;
>  	bd_tx_q->dev_private = dev->data->dev_private;
> @@ -940,7 +961,6 @@ bond_ethdev_promiscuous_enable(struct rte_eth_dev *eth_dev)
>  	case BONDING_MODE_ACTIVE_BACKUP:
>  	default:
>  		rte_eth_promiscuous_enable(internals->current_primary_port);
> -
>  	}
>  }
>  
> @@ -975,7 +995,8 @@ bond_ethdev_lsc_event_callback(uint8_t port_id, enum rte_eth_event_type type,
>  	struct bond_dev_private *internals;
>  	struct rte_eth_link link;
>  
> -	int i, valid_slave = 0, active_pos = -1;
> +	int i, valid_slave = 0;
> +	uint8_t active_pos;
>  	uint8_t lsc_flag = 0;
>  
>  	if (type != RTE_ETH_EVENT_INTR_LSC || param == NULL)
> @@ -1005,16 +1026,12 @@ bond_ethdev_lsc_event_callback(uint8_t port_id, enum rte_eth_event_type type,
>  		return;
>  
>  	/* Search for port in active port list */
> -	for (i = 0; i < internals->active_slave_count; i++) {
> -		if (port_id == internals->active_slaves[i]) {
> -			active_pos = i;
> -			break;
> -		}
> -	}
> +	active_pos = find_slave_by_id(internals->active_slaves,
> +			internals->active_slave_count, port_id);
>  
>  	rte_eth_link_get_nowait(port_id, &link);
>  	if (link.link_status) {
> -		if (active_pos >= 0)
> +		if (active_pos < internals->active_slave_count)
>  			return;
>  
>  		/* if no active slave ports then set this port to be primary port */
> @@ -1028,21 +1045,19 @@ bond_ethdev_lsc_event_callback(uint8_t port_id, enum rte_eth_event_type type,
>  			link_properties_set(bonded_eth_dev,
>  					&(slave_eth_dev->data->dev_link));
>  		}
> -		internals->active_slaves[internals->active_slave_count++] = port_id;
> +
> +		rte_eth_bond_activate_slave(bonded_eth_dev, port_id);
>  
>  		/* If user has defined the primary port then default to using it */
>  		if (internals->user_defined_primary_port &&
>  				internals->primary_port == port_id)
>  			bond_ethdev_primary_set(internals, port_id);
>  	} else {
> -		if (active_pos < 0)
> +		if (active_pos == internals->active_slave_count)
>  			return;
>  
>  		/* Remove from active slave list */
> -		for (i = active_pos; i < (internals->active_slave_count - 1); i++)
> -			internals->active_slaves[i] = internals->active_slaves[i+1];
> -
> -		internals->active_slave_count--;
> +		rte_eth_bond_deactive_slave(bonded_eth_dev, active_pos);
>  
>  		/* No active slaves, change link status to down and reset other
>  		 * link properties */
> diff --git a/lib/librte_pmd_bond/rte_eth_bond_private.h b/lib/librte_pmd_bond/rte_eth_bond_private.h
> index 60f1e8d..6742a4c 100644
> --- a/lib/librte_pmd_bond/rte_eth_bond_private.h
> +++ b/lib/librte_pmd_bond/rte_eth_bond_private.h
> @@ -115,11 +115,11 @@ struct bond_dev_private {
>  	uint16_t nb_rx_queues;			/**< Total number of rx queues */
>  	uint16_t nb_tx_queues;			/**< Total number of tx queues*/
>  
> -	uint8_t slave_count;			/**< Number of active slaves */
> -	uint8_t active_slave_count;		/**< Number of slaves */
> +	uint8_t slave_count;			/**< Number of slaves */
> +	uint8_t active_slave_count;		/**< Number of active slaves */
>  
> -	uint8_t active_slaves[RTE_MAX_ETHPORTS];	/**< Active slave list */
>  	uint8_t slaves[RTE_MAX_ETHPORTS];			/**< Slave list */
> +	uint8_t active_slaves[RTE_MAX_ETHPORTS];	/**< Active slave list */
>  
>  	/** Persisted configuration of slaves */
>  	struct slave_conf presisted_slaves_conf[RTE_MAX_ETHPORTS];
> @@ -130,6 +130,19 @@ extern struct eth_dev_ops default_dev_ops;
>  int
>  valid_bonded_ethdev(struct rte_eth_dev *eth_dev);
>  
> +static inline uint8_t
> +find_slave_by_id(uint8_t *slaves, uint8_t slaves_count,
> +	uint8_t slave_id ) {
> +
> +	uint8_t pos;
> +	for (pos = 0; pos < slaves_count; pos++) {
> +		if (slave_id == slaves[pos])
> +			break;
> +	}
> +
> +	return pos;
> +}
> +
>  int
>  valid_port_id(uint8_t port_id);
>  
> @@ -140,6 +153,14 @@ int
>  valid_slave_port_id(uint8_t port_id);
>  
>  void
> +rte_eth_bond_deactive_slave(struct rte_eth_dev *eth_dev,
> +	uint8_t slave_pos );
> +
> +void
> +rte_eth_bond_activate_slave(struct rte_eth_dev *eth_dev,
> +	uint8_t port_id );
> +
> +void
>  link_properties_set(struct rte_eth_dev *bonded_eth_dev,
>  		struct rte_eth_link *slave_dev_link);
>  void
> @@ -153,6 +174,9 @@ int
>  mac_address_set(struct rte_eth_dev *eth_dev, struct ether_addr *new_mac_addr);
>  
>  int
> +mac_address_get(struct rte_eth_dev *eth_dev, struct ether_addr *dst_mac_addr);
> +
> +int
>  mac_address_slaves_update(struct rte_eth_dev *bonded_eth_dev);
>  
>  uint8_t
> -- 
> 1.7.9.5
> 
>