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authorDavid S. Miller <davem@sunset.davemloft.net>2006-08-15 04:08:36 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2006-08-18 03:29:46 +0400
commit7ea49ed73c8d0d0bdf7c11fc18c61572d2d22176 (patch)
tree09cf48c5f48bdee89b7a2579ba4c7b072ca842e9
parent774bd8613d0188cda72408f8ffce258d73953cad (diff)
downloadlinux-7ea49ed73c8d0d0bdf7c11fc18c61572d2d22176.tar.xz
[VLAN]: Make sure bonding packet drop checks get done in hwaccel RX path.
Since __vlan_hwaccel_rx() is essentially bypassing the netif_receive_skb() call that would have occurred if we did the VLAN decapsulation in software, we are missing the skb_bond() call and the assosciated checks it does. Export those checks via an inline function, skb_bond_should_drop(), and use this in __vlan_hwaccel_rx(). Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/linux/if_vlan.h5
-rw-r--r--include/linux/netdevice.h24
-rw-r--r--net/core/dev.c18
3 files changed, 30 insertions, 17 deletions
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 383627ad328f..ab2740832742 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -155,6 +155,11 @@ static inline int __vlan_hwaccel_rx(struct sk_buff *skb,
{
struct net_device_stats *stats;
+ if (skb_bond_should_drop(skb)) {
+ dev_kfree_skb_any(skb);
+ return NET_RX_DROP;
+ }
+
skb->dev = grp->vlan_devices[vlan_tag & VLAN_VID_MASK];
if (skb->dev == NULL) {
dev_kfree_skb_any(skb);
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 75f02d8c6ed3..c0c2b46face1 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1012,6 +1012,30 @@ static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
unlikely(skb->ip_summed != CHECKSUM_HW));
}
+/* On bonding slaves other than the currently active slave, suppress
+ * duplicates except for 802.3ad ETH_P_SLOW and alb non-mcast/bcast.
+ */
+static inline int skb_bond_should_drop(struct sk_buff *skb)
+{
+ struct net_device *dev = skb->dev;
+ struct net_device *master = dev->master;
+
+ if (master &&
+ (dev->priv_flags & IFF_SLAVE_INACTIVE)) {
+ if (master->priv_flags & IFF_MASTER_ALB) {
+ if (skb->pkt_type != PACKET_BROADCAST &&
+ skb->pkt_type != PACKET_MULTICAST)
+ return 0;
+ }
+ if (master->priv_flags & IFF_MASTER_8023AD &&
+ skb->protocol == __constant_htons(ETH_P_SLOW))
+ return 0;
+
+ return 1;
+ }
+ return 0;
+}
+
#endif /* __KERNEL__ */
#endif /* _LINUX_DEV_H */
diff --git a/net/core/dev.c b/net/core/dev.c
index d95e2626d944..9fe96cde3e19 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1619,26 +1619,10 @@ static inline struct net_device *skb_bond(struct sk_buff *skb)
struct net_device *dev = skb->dev;
if (dev->master) {
- /*
- * On bonding slaves other than the currently active
- * slave, suppress duplicates except for 802.3ad
- * ETH_P_SLOW and alb non-mcast/bcast.
- */
- if (dev->priv_flags & IFF_SLAVE_INACTIVE) {
- if (dev->master->priv_flags & IFF_MASTER_ALB) {
- if (skb->pkt_type != PACKET_BROADCAST &&
- skb->pkt_type != PACKET_MULTICAST)
- goto keep;
- }
-
- if (dev->master->priv_flags & IFF_MASTER_8023AD &&
- skb->protocol == __constant_htons(ETH_P_SLOW))
- goto keep;
-
+ if (skb_bond_should_drop(skb)) {
kfree_skb(skb);
return NULL;
}
-keep:
skb->dev = dev->master;
}