[dpdk-dev] [PATCH v2] net/iavf: fix multi-queue Rx interrupt for VF

Yang, Qiming qiming.yang at intel.com
Wed Sep 11 04:53:42 CEST 2019


> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of lunyuan.cui
> Sent: Friday, September 6, 2019 7:48 PM
> To: dev at dpdk.org
> Cc: Lu, Wenzhuo <wenzhuo.lu at intel.com>; Cui, LunyuanX
> <lunyuanx.cui at intel.com>; stable at dpdk.org
> Subject: [dpdk-dev] [PATCH v2] net/iavf: fix multi-queue Rx interrupt for VF
> 
> The original issue was that the last queue could not be mapped to the
> interrupt vector, so the last queue could not receive the package in the
> interrupt mode.
> This patch fixes the issue.
> 
> Fixes: d6bde6b5eae9 ("net/avf: enable Rx interrupt")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Lunyuan Cui <lunyuanx.cui at intel.com>
> ---
>  drivers/net/iavf/iavf_ethdev.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
> index 8f3907378..6559bfa1f 100644
> --- a/drivers/net/iavf/iavf_ethdev.c
> +++ b/drivers/net/iavf/iavf_ethdev.c
> @@ -360,7 +360,7 @@ static int iavf_config_rx_queues_irqs(struct
> rte_eth_dev *dev,
>  			for (i = 0; i < dev->data->nb_rx_queues; i++) {
>  				vf->rxq_map[vec] |= 1 << i;
>  				intr_handle->intr_vec[i] = vec++;
> -				if (vec >= vf->nb_msix)
> +				if (vec > vf->nb_msix)
>  					vec = IAVF_RX_VEC_START;
>  			}
>  			PMD_DRV_LOG(DEBUG,
> --
> 2.17.1

Acked-by: Qiming Yang <qiming.yang at intel.com>


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