netdev - RE: [PATCH net-next v1 1/1] net: fec: Add VLAN receive HW support.

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Date:	Wed, 26 Jun 2013 11:18:27 +0000
From:	Duan Fugang-B38611 <B38611@...escale.com>
To:	Jim Baxter <jim_baxter@...tor.com>
CC:	"David S. Miller" <davem@...emloft.net>,
	Li Frank-B20596 <B20596@...escale.com>,
	Estevam Fabio-R49496 <r49496@...escale.com>,
	Lucas Stach <l.stach@...gutronix.de>,
	Shawn Guo <shawn.guo@...aro.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Ben Hutchings <bhutchings@...arflare.com>
Subject: RE: [PATCH net-next v1 1/1] net: fec: Add VLAN receive HW support.

On 06/26/13 18:09, Jim Baxter wrote:

> > In addition,
> > 	1.	enet IP support hw VLAN detect such as imx28-fec, imx6q-fec and mvf600-fec, so you can add the "BD_ENET_RX_VLAN " to those platform driver_data.
> I have only tested it on the i.MX6, if someone wants to check it on the
> imx28 later they can add it to that option.

> > 	2.	Enable the VLAN tag extraction with "NETIF_F_HW_VLAN_CTAG_RX" feature in .ndo_fix_features, which is configured by user.
> What do you mean by this, I am only enabling the VLAN code if (ndev->features & NETIF_F_HW_VLAN_CTAG_RX) is set. I am pretty sure this is set by

You can enable the feature like below, which is reasonable.
.ndo_fix_features   = fec_enet_fix_features

static netdev_features_t fec_enet_fix_features (struct net_device *dev, 
        netdev_features_t features)
{
        struct fec_enet_private *fep = netdev_priv(dev);
	  const struct platform_device_id *id_entry =
					platform_get_device_id(fep->pdev);

	  if (id_entry->driver_data & FEC_QUIRK_HAS_VLAN)
        	features |= NETIF_F_HW_VLAN_CTAG_RX;

	  return features;
}


Thank you,
Andy


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