netdev - Re: [PATCH net] ionic: update the queue count on open

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Message-ID: <20200625155754.0f9abd7a@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Thu, 25 Jun 2020 15:57:54 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Shannon Nelson <snelson@...sando.io>
Cc:     netdev@...r.kernel.org, davem@...emloft.net
Subject: Re: [PATCH net] ionic: update the queue count on open

On Thu, 25 Jun 2020 13:12:15 -0700 Shannon Nelson wrote:
> Let the network stack know the real number of queues that
> we are using.
> 
> Fixes: 49d3b493673a ("ionic: disable the queues on link down")
> Signed-off-by: Shannon Nelson <snelson@...sando.io>
> ---
>  drivers/net/ethernet/pensando/ionic/ionic_lif.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
> index aaa00edd9d5b..62858c7afae0 100644
> --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
> +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
> @@ -1673,6 +1673,9 @@ int ionic_open(struct net_device *netdev)
>  	if (err)
>  		goto err_out;
>  
> +	netif_set_real_num_tx_queues(netdev, lif->nxqs);
> +	netif_set_real_num_rx_queues(netdev, lif->nxqs);

These calls can fail.