[dpdk-dev,v6,3/3] ethdev: fix wrong error return refere to API definition

  Per definition, rte_eth_rx_burst/rte_eth_tx_burst/rte_eth_rx_queue_count returns the packet number
When RTE_LIBRTE_ETHDEV_DEBUG turns on, retval of FUNC_PTR_OR_ERR_RTE was set to -ENOTSUP.
It makes confusing.
The patch always return 0 no matter no packet or there's error.

Signed-off-by: Cunming Liang <cunming.liang@intel.com>
---
 lib/librte_ether/rte_ethdev.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
  

> From: Liang, Cunming
> Sent: Monday, October 27, 2014 1:20 AM
> To: dev@dpdk.org
> Cc: nhorman@tuxdriver.com; Ananyev, Konstantin; Richardson, Bruce; De Lara Guarch, Pablo; Liang, Cunming
> Subject: [PATCH v6 3/3] ethdev: fix wrong error return refere to API definition
> 
> Per definition, rte_eth_rx_burst/rte_eth_tx_burst/rte_eth_rx_queue_count returns the packet number
> When RTE_LIBRTE_ETHDEV_DEBUG turns on, retval of FUNC_PTR_OR_ERR_RTE was set to -ENOTSUP.
> It makes confusing.
> The patch always return 0 no matter no packet or there's error.
> 
> Signed-off-by: Cunming Liang <cunming.liang@intel.com>
> ---
>  lib/librte_ether/rte_ethdev.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> index 50f10d9..922a0c6 100644
> --- a/lib/librte_ether/rte_ethdev.c
> +++ b/lib/librte_ether/rte_ethdev.c
> @@ -2530,7 +2530,7 @@ rte_eth_rx_burst(uint8_t port_id, uint16_t queue_id,
>  		return 0;
>  	}
>  	dev = &rte_eth_devices[port_id];
> -	FUNC_PTR_OR_ERR_RET(*dev->rx_pkt_burst, -ENOTSUP);
> +	FUNC_PTR_OR_ERR_RET(*dev->rx_pkt_burst, 0);
>  	if (queue_id >= dev->data->nb_rx_queues) {
>  		PMD_DEBUG_TRACE("Invalid RX queue_id=%d\n", queue_id);
>  		return 0;
> @@ -2551,7 +2551,7 @@ rte_eth_tx_burst(uint8_t port_id, uint16_t queue_id,
>  	}
>  	dev = &rte_eth_devices[port_id];
> 
> -	FUNC_PTR_OR_ERR_RET(*dev->tx_pkt_burst, -ENOTSUP);
> +	FUNC_PTR_OR_ERR_RET(*dev->tx_pkt_burst, 0);
>  	if (queue_id >= dev->data->nb_tx_queues) {
>  		PMD_DEBUG_TRACE("Invalid TX queue_id=%d\n", queue_id);
>  		return 0;
> @@ -2570,7 +2570,7 @@ rte_eth_rx_queue_count(uint8_t port_id, uint16_t queue_id)
>  		return 0;
>  	}
>  	dev = &rte_eth_devices[port_id];
> -	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_count, -ENOTSUP);
> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_count, 0);
>  	return (*dev->dev_ops->rx_queue_count)(dev, queue_id);
>  }
> 
> --
> 1.7.4.1

Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>