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.toshi...@lab.ntt.co.jp>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 1 +
drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 1 +
drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c | 1 +
include/linux/if_vlan.h | 22 ++++++++++++++++++++++
net/core/dev.c | 21 +++++++++------------
5 files changed, 34 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index 9677431..039b0c1 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -12557,6 +12557,7 @@ static netdev_features_t bnx2x_features_check(struct
sk_buff *skb,
struct net_device *dev,
netdev_features_t features)
{
+ features = vlan_features_check(skb, features);
return vxlan_features_check(skb, features);
}
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index a8339e9..ebc93a1 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -2373,6 +2373,7 @@ static netdev_features_t mlx4_en_features_check(struct
sk_buff *skb,
struct net_device *dev,
netdev_features_t features)
{
+ features = vlan_features_check(skb, features);
return vxlan_features_check(skb, features);
}
#endif
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index a430a34a..367f397 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -507,6 +507,7 @@ static netdev_features_t qlcnic_features_check(struct
sk_buff *skb,
struct net_device *dev,
netdev_features_t features)
{
+ features = vlan_features_check(skb, features);
return vxlan_features_check(skb, features);
}
#endif
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index bc649dd..5ceb38f 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -606,4 +606,26 @@ static inline bool skb_vlan_tagged_multi(struct sk_buff
*skb)
return true;
}
+/**
+ * vlan_features_check - drop unsafe features for skb with multiple tags.
+ * @skb: skbuff to query
+ * @features: features to be checked
+ *
+ * Returns features without unsafe ones if the skb has multiple tags.
+ */
+static inline netdev_features_t vlan_features_check(struct sk_buff *skb,
+ netdev_features_t features)
+{
+ 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);
+
+ return features;
+}
+
#endif /* !(_LINUX_IF_VLAN_H_) */
diff --git a/net/core/dev.c b/net/core/dev.c
index 04bffcd..41d0db55 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2562,6 +2562,13 @@ static netdev_features_t harmonize_features(struct
sk_buff *skb,
return features;
}
+static netdev_features_t dflt_features_check(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);
}
--
1.8.1.2
------------------------------------------------------------------------------
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