8 files changed, 36 insertions, 18 deletions

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 7896cf143045..cecb482ed919 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -802,9 +802,11 @@ static int __br_fdb_add(struct ndmsg *ndm, struct net_bridge_port *p,
 	int err = 0;
 
 	if (ndm->ndm_flags & NTF_USE) {
+		local_bh_disable();
 		rcu_read_lock();
 		br_fdb_update(p->br, p, addr, vid, true);
 		rcu_read_unlock();
+		local_bh_enable();
 	} else {
 		spin_lock_bh(&p->br->hash_lock);
 		err = fdb_add_entry(p, addr, ndm->ndm_state,
diff --git a/net/core/dev.c b/net/core/dev.c
index 0602e917a305..6778a9999d52 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1723,15 +1723,8 @@ EXPORT_SYMBOL_GPL(is_skb_forwardable);
 
 int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb)
 {
-	if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) {
-		if (skb_copy_ubufs(skb, GFP_ATOMIC)) {
-			atomic_long_inc(&dev->rx_dropped);
-			kfree_skb(skb);
-			return NET_RX_DROP;
-		}
-	}
-
-	if (unlikely(!is_skb_forwardable(dev, skb))) {
+	if (skb_orphan_frags(skb, GFP_ATOMIC) ||
+	    unlikely(!is_skb_forwardable(dev, skb))) {
 		atomic_long_inc(&dev->rx_dropped);
 		kfree_skb(skb);
 		return NET_RX_DROP;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 1c92ea67baef..83aa604f9273 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -90,6 +90,7 @@
 #include <linux/socket.h>
 #include <linux/sockios.h>
 #include <linux/igmp.h>
+#include <linux/inetdevice.h>
 #include <linux/in.h>
 #include <linux/errno.h>
 #include <linux/timer.h>
@@ -1960,6 +1961,7 @@ void udp_v4_early_demux(struct sk_buff *skb)
 	struct sock *sk;
 	struct dst_entry *dst;
 	int dif = skb->dev->ifindex;
+	int ours;
 
 	/* validate the packet */
 	if (!pskb_may_pull(skb, skb_transport_offset(skb) + sizeof(struct udphdr)))
@@ -1969,14 +1971,24 @@ void udp_v4_early_demux(struct sk_buff *skb)
 	uh = udp_hdr(skb);
 
 	if (skb->pkt_type == PACKET_BROADCAST ||
-	    skb->pkt_type == PACKET_MULTICAST)
+	    skb->pkt_type == PACKET_MULTICAST) {
+		struct in_device *in_dev = __in_dev_get_rcu(skb->dev);
+
+		if (!in_dev)
+			return;
+
+		ours = ip_check_mc_rcu(in_dev, iph->daddr, iph->saddr,
+				       iph->protocol);
+		if (!ours)
+			return;
 		sk = __udp4_lib_mcast_demux_lookup(net, uh->dest, iph->daddr,
 						   uh->source, iph->saddr, dif);
-	else if (skb->pkt_type == PACKET_HOST)
+	} else if (skb->pkt_type == PACKET_HOST) {
 		sk = __udp4_lib_demux_lookup(net, uh->dest, iph->daddr,
 					     uh->source, iph->saddr, dif);
-	else
+	} else {
 		return;
+	}
 
 	if (!sk)
 		return;
diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c
index d873ceea86e6..ca09bf49ac68 100644
--- a/net/ipv6/addrconf_core.c
+++ b/net/ipv6/addrconf_core.c
@@ -133,6 +133,14 @@ static void snmp6_free_dev(struct inet6_dev *idev)
 	free_percpu(idev->stats.ipv6);
 }
 
+static void in6_dev_finish_destroy_rcu(struct rcu_head *head)
+{
+	struct inet6_dev *idev = container_of(head, struct inet6_dev, rcu);
+
+	snmp6_free_dev(idev);
+	kfree(idev);
+}
+
 /* Nobody refers to this device, we may destroy it. */
 
 void in6_dev_finish_destroy(struct inet6_dev *idev)
@@ -151,7 +159,6 @@ void in6_dev_finish_destroy(struct inet6_dev *idev)
 		pr_warn("Freeing alive inet6 device %p\n", idev);
 		return;
 	}
-	snmp6_free_dev(idev);
-	kfree_rcu(idev, rcu);
+	call_rcu(&idev->rcu, in6_dev_finish_destroy_rcu);
 }
 EXPORT_SYMBOL(in6_dev_finish_destroy);
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index f2e464eba5ef..41a73da371a9 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -212,13 +212,13 @@ static int ip6_input_finish(struct sock *sk, struct sk_buff *skb)
 	 */
 
 	rcu_read_lock();
-resubmit:
 	idev = ip6_dst_idev(skb_dst(skb));
 	if (!pskb_pull(skb, skb_transport_offset(skb)))
 		goto discard;
 	nhoff = IP6CB(skb)->nhoff;
 	nexthdr = skb_network_header(skb)[nhoff];
 
+resubmit:
 	raw = raw6_local_deliver(skb, nexthdr);
 	ipprot = rcu_dereference(inet6_protos[nexthdr]);
 	if (ipprot) {
@@ -246,10 +246,12 @@ resubmit:
 			goto discard;
 
 		ret = ipprot->handler(skb);
-		if (ret > 0)
+		if (ret < 0) {
+			nexthdr = -ret;
 			goto resubmit;
-		else if (ret == 0)
+		} else if (ret == 0) {
 			IP6_INC_STATS_BH(net, idev, IPSTATS_MIB_INDELIVERS);
+		}
 	} else {
 		if (!raw) {
 			if (xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index 7b3f732269e4..bff427f31924 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -541,7 +541,7 @@ static void mpls_ifdown(struct net_device *dev)
 
 	RCU_INIT_POINTER(dev->mpls_ptr, NULL);
 
-	kfree(mdev);
+	kfree_rcu(mdev, rcu);
 }
 
 static int mpls_dev_notify(struct notifier_block *this, unsigned long event,
diff --git a/net/mpls/internal.h b/net/mpls/internal.h
index b064c345042c..8cabeb5a1cb9 100644
--- a/net/mpls/internal.h
+++ b/net/mpls/internal.h
@@ -16,6 +16,7 @@ struct mpls_dev {
 	int			input_enabled;
 
 	struct ctl_table_header *sysctl;
+	struct rcu_head		rcu;
 };
 
 struct sk_buff;
diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c
index 4776282c6417..33e6d6e2908f 100644
--- a/net/openvswitch/vport-netdev.c
+++ b/net/openvswitch/vport-netdev.c
@@ -125,6 +125,7 @@ static struct vport *netdev_create(const struct vport_parms *parms)
 	if (err)
 		goto error_master_upper_dev_unlink;
 
+	dev_disable_lro(netdev_vport->dev);
 	dev_set_promiscuity(netdev_vport->dev, 1);
 	netdev_vport->dev->priv_flags |= IFF_OVS_DATAPATH;
 	rtnl_unlock();