netdev - RE: [PATCH net 1/1] qlge: Fix netdev features configuration.

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Date:   Thu, 23 Aug 2018 21:59:00 +0000
From:   "Chopra, Manish" <Manish.Chopra@...ium.com>
To:     "Chopra, Manish" <Manish.Chopra@...ium.com>,
        "davem@...emloft.net" <davem@...emloft.net>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Dept-GE Linux NIC Dev <Dept-GELinuxNICDev@...ium.com>,
        "bpoirier@...e.com" <bpoirier@...e.com>
Subject: RE: [PATCH net 1/1] qlge: Fix netdev features configuration.

> -----Original Message-----
> From: Manish Chopra <manish.chopra@...ium.com>
> Sent: Friday, August 24, 2018 2:02 AM
> To: davem@...emloft.net
> Cc: netdev@...r.kernel.org; Dept-GE Linux NIC Dev <Dept-
> GELinuxNICDev@...ium.com>; bpoirier@...e.com
> Subject: [PATCH net 1/1] qlge: Fix netdev features configuration.
> 
> qlge_fix_features() is not supposed to modify hardware or driver state,
> rather it is supposed to only fix requested fetures bits. Currently
> qlge_fix_features() also goes for interface down and up unnecessarily if there
> is not even any change in features set.
> 
> This patch changes/fixes following -
> 
> 1) Move reload of interface or device re-config from
>    qlge_fix_features() to qlge_set_features().
> 2) Reload of interface in qlge_set_features() only if
>    relevant feature bit (NETIF_F_HW_VLAN_CTAG_RX) is changed.
> 3) Get rid of qlge_fix_features() since driver is not really
>    required to fix any features bit.
> 
> Signed-off-by: Manish <manish.chopra@...ium.com>
> Reviewed-by: Benjamin Poirier <bpoirier@...e.com>
> ---
>  drivers/net/ethernet/qlogic/qlge/qlge_main.c | 23 ++++++++---------------
>  1 file changed, 8 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_main.c
> b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
> index 353f1c1..059ba94 100644
> --- a/drivers/net/ethernet/qlogic/qlge/qlge_main.c
> +++ b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
> @@ -2384,26 +2384,20 @@ static int qlge_update_hw_vlan_features(struct
> net_device *ndev,
>  	return status;
>  }
> 
> -static netdev_features_t qlge_fix_features(struct net_device *ndev,
> -	netdev_features_t features)
> -{
> -	int err;
> -
> -	/* Update the behavior of vlan accel in the adapter */
> -	err = qlge_update_hw_vlan_features(ndev, features);
> -	if (err)
> -		return err;
> -
> -	return features;
> -}
> -
>  static int qlge_set_features(struct net_device *ndev,
>  	netdev_features_t features)
>  {
>  	netdev_features_t changed = ndev->features ^ features;
> +	int err;
> +
> +	if (changed & NETIF_F_HW_VLAN_CTAG_RX) {
> +		/* Update the behavior of vlan accel in the adapter */
> +		err = qlge_update_hw_vlan_features(ndev, features);
> +		if (err)
> +			return err;
> 
> -	if (changed & NETIF_F_HW_VLAN_CTAG_RX)
>  		qlge_vlan_mode(ndev, features);
> +	}
> 
>  	return 0;
>  }
> @@ -4719,7 +4713,6 @@ static int ql_init_device(struct pci_dev *pdev,
> struct net_device *ndev,
>  	.ndo_set_mac_address	= qlge_set_mac_address,
>  	.ndo_validate_addr	= eth_validate_addr,
>  	.ndo_tx_timeout		= qlge_tx_timeout,
> -	.ndo_fix_features	= qlge_fix_features,
>  	.ndo_set_features	= qlge_set_features,
>  	.ndo_vlan_rx_add_vid	= qlge_vlan_rx_add_vid,
>  	.ndo_vlan_rx_kill_vid	= qlge_vlan_rx_kill_vid,
> --
> 1.8.3.1

Hello David,  Please ignore this patch and consider the previous same patch. By mistake it was submitted twice.

Thanks !!