From: Li RongQing <roy.qing.li@gmail.com>
Date: Wed, 3 Sep 2014 09:43:45 +0000 (+0800)
Subject: openvswitch: distinguish between the dropped and consumed skb
X-Git-Tag: firefly_0821_release~176^2~3268^2~16
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c5eba0b6f84eb4f0fdc1d8a4abc1c7d40db6e8a6;p=firefly-linux-kernel-4.4.55.git

openvswitch: distinguish between the dropped and consumed skb

distinguish between the dropped and consumed skb, not assume the skb
is consumed always

Cc: Thomas Graf <tgraf@noironetworks.com>
Cc: Pravin Shelar <pshelar@nicira.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 35d866f036e7..91d66b7e64ac 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -265,8 +265,11 @@ void ovs_dp_process_received_packet(struct vport *p, struct sk_buff *skb)
 		upcall.key = &key;
 		upcall.userdata = NULL;
 		upcall.portid = ovs_vport_find_upcall_portid(p, skb);
-		ovs_dp_upcall(dp, skb, &upcall);
-		consume_skb(skb);
+		error = ovs_dp_upcall(dp, skb, &upcall);
+		if (unlikely(error))
+			kfree_skb(skb);
+		else
+			consume_skb(skb);
 		stats_counter = &stats->n_missed;
 		goto out;
 	}