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net: Move check for multiple vlans to drivers

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To allow drivers to handle the features check for multiple tags,
move the check to ndo_features_check().
As no drivers currently handle multiple tagged TSO, introduce
dflt_features_check() and call it if the driver does not have
ndo_features_check().

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Toshiaki Makita
2015-03-27 14:31:12 +09:00
committed by David S. Miller
parent f5a7fb88e1
commit 8cb65d0008
5 changed files with 34 additions and 12 deletions
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21
net/core/dev.c
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@@ -2562,6 +2562,13 @@ static netdev_features_t harmonize_features(struct sk_buff *skb,
return features;
}
static netdev_features_t dflt_features_check(const struct sk_buff *skb,
struct net_device *dev,
netdev_features_t features)
{
return vlan_features_check(skb, features);
}
netdev_features_t netif_skb_features(struct sk_buff *skb)
{
struct net_device *dev = skb->dev;
@@ -2583,22 +2590,12 @@ netdev_features_t netif_skb_features(struct sk_buff *skb)
dev->vlan_features |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_STAG_TX);
else
goto finalize;
if (skb_vlan_tagged_multi(skb))
features = netdev_intersect_features(features,
NETIF_F_SG |
NETIF_F_HIGHDMA |
NETIF_F_FRAGLIST |
NETIF_F_GEN_CSUM |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_STAG_TX);
finalize:
if (dev->netdev_ops->ndo_features_check)
features &= dev->netdev_ops->ndo_features_check(skb, dev,
features);
else
features &= dflt_features_check(skb, dev, features);
return harmonize_features(skb, features);
}