X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=datapath%2Fvport-gre.c;h=5d5090c89a502376c30583e82a4bbdeb4254000c;hb=1c7ec30dee09e4f952b1037517e857ad54b4282b;hp=86137565a381015b22fe4f19315ff020dad7d00f;hpb=29c71cfa0c137abd49bfa346c1b871d2543071ae;p=sliver-openvswitch.git

diff --git a/datapath/vport-gre.c b/datapath/vport-gre.c
index 86137565a..5d5090c89 100644
--- a/datapath/vport-gre.c
+++ b/datapath/vport-gre.c
@@ -116,6 +116,25 @@ static int gre_rcv(struct sk_buff *skb,
 	return PACKET_RCVD;
 }
 
+/* Called with rcu_read_lock and BH disabled. */
+static int gre_err(struct sk_buff *skb, u32 info,
+		   const struct tnl_ptk_info *tpi)
+{
+	struct ovs_net *ovs_net;
+	struct vport *vport;
+
+	ovs_net = net_generic(dev_net(skb->dev), ovs_net_id);
+	if ((tpi->flags & TUNNEL_KEY) && (tpi->flags & TUNNEL_SEQ))
+		vport = rcu_dereference(ovs_net->vport_net.gre64_vport);
+	else
+		vport = rcu_dereference(ovs_net->vport_net.gre_vport);
+
+	if (unlikely(!vport))
+		return PACKET_REJECT;
+	else
+		return PACKET_RCVD;
+}
+
 static int __send(struct vport *vport, struct sk_buff *skb,
 		  int tunnel_hlen,
 		  __be32 seq, __be16 gre64_flag)
@@ -187,6 +206,7 @@ error:
 
 static struct gre_cisco_protocol gre_protocol = {
 	.handler	= gre_rcv,
+	.err_handler	= gre_err,
 	.priority	= 1,
 };
 
@@ -257,7 +277,7 @@ static void gre_tnl_destroy(struct vport *vport)
 
 	ovs_net = net_generic(net, ovs_net_id);
 
-	rcu_assign_pointer(ovs_net->vport_net.gre_vport, NULL);
+	RCU_INIT_POINTER(ovs_net->vport_net.gre_vport, NULL);
 	ovs_vport_deferred_free(vport);
 	gre_exit();
 }