[Intel-wired-lan] [PATCH 4/9] ixgbevf: setup queue counts

[Singh, Krishneil K]

> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at osuosl.org] On Behalf Of
> Emil Tantilov
> Sent: Tuesday, January 30, 2018 4:51 PM
> To: intel-wired-lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [PATCH 4/9] ixgbevf: setup queue counts
> 
> Add calls for netif_set_real_num_t/rx_queues() in ixgbevf_open().
> Make sure that calls to ixgbevf_open() are rtnl protected and improve
> the error handling when setting up multiple queues.
> 
> Signed-off-by: Emil Tantilov <emil.s.tantilov at intel.com>
> ---
>  drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   44 ++++++++++++++------
> -
>  1 file changed, 29 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> index f8e1b1c..cb9d00a 100644
> --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> @@ -3119,9 +3119,14 @@ static int ixgbevf_setup_all_tx_resources(struct
> ixgbevf_adapter *adapter)
>  		if (!err)
>  			continue;
>  		hw_dbg(&adapter->hw, "Allocation for Tx Queue %u failed\n",
> i);
> -		break;
> +		goto err_setup_tx;
>  	}
> 
> +	return 0;
> +err_setup_tx:
> +	/* rewind the index freeing the rings as we go */
> +	while (i--)
> +		ixgbevf_free_tx_resources(adapter->tx_ring[i]);
>  	return err;
>  }
> 
> @@ -3179,8 +3184,14 @@ static int ixgbevf_setup_all_rx_resources(struct
> ixgbevf_adapter *adapter)
>  		if (!err)
>  			continue;
>  		hw_dbg(&adapter->hw, "Allocation for Rx Queue %u failed\n",
> i);
> -		break;
> +		goto err_setup_rx;
>  	}
> +
> +	return 0;
> +err_setup_rx:
> +	/* rewind the index freeing the rings as we go */
> +	while (i--)
> +		ixgbevf_free_rx_resources(adapter->rx_ring[i]);
>  	return err;
>  }
> 
> @@ -3285,18 +3296,27 @@ int ixgbevf_open(struct net_device *netdev)
>  	if (err)
>  		goto err_req_irq;
> 
> +	/* Notify the stack of the actual queue counts. */
> +	err = netif_set_real_num_tx_queues(netdev, adapter-
> >num_tx_queues);
> +	if (err)
> +		goto err_set_queues;
> +
> +	err = netif_set_real_num_rx_queues(netdev, adapter-
> >num_rx_queues);
> +	if (err)
> +		goto err_set_queues;
> +
>  	ixgbevf_up_complete(adapter);
> 
>  	return 0;
> 
> +err_set_queues:
> +	ixgbevf_free_irq(adapter);
>  err_req_irq:
> -	ixgbevf_down(adapter);
> -err_setup_rx:
>  	ixgbevf_free_all_rx_resources(adapter);
> -err_setup_tx:
> +err_setup_rx:
>  	ixgbevf_free_all_tx_resources(adapter);
> +err_setup_tx:
>  	ixgbevf_reset(adapter);
> -
>  err_setup_reset:
> 
>  	return err;
> @@ -3948,17 +3968,11 @@ static int ixgbevf_resume(struct pci_dev *pdev)
> 
>  	rtnl_lock();
>  	err = ixgbevf_init_interrupt_scheme(adapter);
> +	if (!err && netif_running(netdev))
> +		err = ixgbevf_open(netdev);
>  	rtnl_unlock();
> -	if (err) {
> -		dev_err(&pdev->dev, "Cannot initialize interrupts\n");
> +	if (err)
>  		return err;
> -	}
> -
> -	if (netif_running(netdev)) {
> -		err = ixgbevf_open(netdev);
> -		if (err)
> -			return err;
> -	}
> 
>  	netif_device_attach(netdev);
> 
> 
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Tested-by: Krishneil Singh <krishneil.k.singh at intel.com>