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openvswitch: Drop packets when interdev is not up 

If the internal device is not up, it should drop received
packets. Sometimes it receive the broadcast or multicast
packets, and the ip protocol stack will casue more cpu
usage wasted.

Signed-off-by: Chunhe Li <lichunhe@huawei.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
This commit is contained in:
Chunhe Li 2014-09-08 13:17:21 -07:00 committed by Pravin B Shelar
parent cc3a5ae6f2
commit e1f9c356d2
1 changed files with 5 additions and 0 deletions
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5
net/openvswitch/vport-internal_dev.c
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@ -224,6 +224,11 @@ static int internal_dev_recv(struct vport *vport, struct sk_buff *skb)
struct net_device *netdev = netdev_vport_priv(vport)->dev;
int len;
if (unlikely(!(netdev->flags & IFF_UP))) {
kfree_skb(skb);
return 0;
}
len = skb->len;
skb_dst_drop(skb);