From e1f9c356d2946ec717d035ccac5532b1c5709c52 Mon Sep 17 00:00:00 2001 From: Chunhe Li Date: Mon, 8 Sep 2014 13:17:21 -0700 Subject: [PATCH] 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 Signed-off-by: Pravin B Shelar --- net/openvswitch/vport-internal_dev.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/openvswitch/vport-internal_dev.c b/net/openvswitch/vport-internal_dev.c index 10dc07e1678b..6a55f7105505 100644 --- a/net/openvswitch/vport-internal_dev.c +++ b/net/openvswitch/vport-internal_dev.c @@ -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); -- 2.39.5