netdev - Re: [patch net-next-2.6 V2] forcedeth: fix vlans

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Date:	Tue, 26 Jul 2011 15:52:42 -0700
From:	walt <w41ter@...il.com>
To:	Jiri Pirko <jpirko@...hat.com>
CC:	Michał Mirosław <mirqus@...il.com>,
	Jesse Gross <jesse@...ira.com>, netdev@...r.kernel.org,
	davem@...emloft.net, johnstul@...ibm.com
Subject: Re: [patch net-next-2.6 V2] forcedeth: fix vlans

Hi Jiri.  Is this patch an addition to the first one,  or a replacement for it?
Thanks for the fast work.



On 07/26/2011 01:19 PM, Jiri Pirko wrote:
> For some reason, when rxaccel is disabled, NV_RX3_VLAN_TAG_PRESENT is
> still set and some pseudorandom vids appear. So check for
> NETIF_F_HW_VLAN_RX as well. Also set correctly hw_features and set vlan
> mode on probe.
> 
> Signed-off-by: Jiri Pirko <jpirko@...hat.com>
> ---
>  drivers/net/forcedeth.c |   16 +++++++++++++---
>  1 files changed, 13 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
> index e64cd9c..e55df30 100644
> --- a/drivers/net/forcedeth.c
> +++ b/drivers/net/forcedeth.c
> @@ -2764,7 +2764,14 @@ static int nv_rx_process_optimized(struct net_device *dev, int limit)
>  			prefetch(skb->data);
>  
>  			vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
> -			if (vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
> +
> +			/*
> +			 * There's need to check for NETIF_F_HW_VLAN_RX here.
> +			 * Even if vlan rx accel is disabled,
> +			 * NV_RX3_VLAN_TAG_PRESENT is pseudo randomly set.
> +			 */
> +			if (dev->features & NETIF_F_HW_VLAN_RX &&
> +			    vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
>  				u16 vid = vlanflags & NV_RX3_VLAN_TAG_MASK;
>  
>  				__vlan_hwaccel_put_tag(skb, vid);
> @@ -5331,15 +5338,16 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
>  		np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
>  		dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG |
>  			NETIF_F_TSO | NETIF_F_RXCSUM;
> -		dev->features |= dev->hw_features;
>  	}
>  
>  	np->vlanctl_bits = 0;
>  	if (id->driver_data & DEV_HAS_VLAN) {
>  		np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
> -		dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
> +		dev->hw_features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
>  	}
>  
> +	dev->features |= dev->hw_features;
> +
>  	np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
>  	if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
>  	    (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
> @@ -5607,6 +5615,8 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
>  		goto out_error;
>  	}
>  
> +	nv_vlan_mode(dev, dev->features);
> +
>  	netif_carrier_off(dev);
>  
>  	dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",

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