Re: [dpdk-dev] [PATCH 2/2] net/ixgbe: fix l3fwd start failed on PF

["Ananyev, Konstantin" <konstantin.ananyev@intel.com>]

Hi,

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Yanglong Wu
> Sent: Thursday, November 2, 2017 5:05 PM
> To: dev@dpdk.org
> Cc: Wu, Yanglong <yanglong.wu@intel.com>
> Subject: [dpdk-dev] [PATCH 2/2] net/ixgbe: fix l3fwd start failed on PF
> 
> which occurred when the SRIOV is active and tx_q > rx_q.
> The number of nb_q_per_pool should equeal to max number
> of queues supported by HW not nb_rx_q.
> 
> Fixes: 27b609cbd1c6 (ethdev: move the multi-queue mode
> check to specific drivers)
> 
> Signed-off-by: Yanglong Wu <yanglong.wu@intel.com>
> ---
>  drivers/net/ixgbe/ixgbe_ethdev.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
> index ae9c44421..0f0641da1 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -2180,7 +2180,7 @@ ixgbe_check_vf_rss_rxq_num(struct rte_eth_dev *dev, uint16_t nb_rx_q)
>  		return -EINVAL;
>  	}
> 
> -	RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool = nb_rx_q;
> +	RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool = 128/RTE_ETH_DEV_SRIOV(dev).active;
>  	RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx = pci_dev->max_vfs * nb_rx_q;
> 
>  	return 0;
> --
> 2.11.0

Not sure I understand what is the purpose of that patch...
Do you want to prevent RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool = 1?  
Konstantin