1 files changed, 42 insertions, 1 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index 96443055324e..13a0d9f6da54 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -98,6 +98,7 @@
 #include <linux/seq_file.h>
 #include <linux/stat.h>
 #include <linux/if_bridge.h>
+#include <linux/if_macvlan.h>
 #include <net/dst.h>
 #include <net/pkt_sched.h>
 #include <net/checksum.h>
@@ -1813,6 +1814,28 @@ static inline struct sk_buff *handle_bridge(struct sk_buff *skb,
 #define handle_bridge(skb, pt_prev, ret, orig_dev)      (skb)
 #endif
 
+#if defined(CONFIG_MACVLAN) || defined(CONFIG_MACVLAN_MODULE)
+struct sk_buff *(*macvlan_handle_frame_hook)(struct sk_buff *skb) __read_mostly;
+EXPORT_SYMBOL_GPL(macvlan_handle_frame_hook);
+
+static inline struct sk_buff *handle_macvlan(struct sk_buff *skb,
+                                             struct packet_type **pt_prev,
+                                             int *ret,
+                                             struct net_device *orig_dev)
+{
+        if (skb->dev->macvlan_port == NULL)
+                return skb;
+
+        if (*pt_prev) {
+                *ret = deliver_skb(skb, *pt_prev, orig_dev);
+                *pt_prev = NULL;
+        }
+        return macvlan_handle_frame_hook(skb);
+}
+#else
+#define handle_macvlan(skb, pt_prev, ret, orig_dev)     (skb)
+#endif
+
 #ifdef CONFIG_NET_CLS_ACT
 /* TODO: Maybe we should just force sch_ingress to be compiled in
  * when CONFIG_NET_CLS_ACT is? otherwise some useless instructions
@@ -1920,6 +1943,9 @@ ncls:
         skb = handle_bridge(skb, &pt_prev, &ret, orig_dev);
         if (!skb)
                 goto out;
+        skb = handle_macvlan(skb, &pt_prev, &ret, orig_dev);
+        if (!skb)
+                goto out;
 
         type = skb->protocol;
         list_for_each_entry_rcu(ptype, &ptype_base[ntohs(type)&15], list) {
@@ -2521,6 +2547,8 @@ static void __dev_set_promiscuity(struct net_device *dev, int inc)
 {
         unsigned short old_flags = dev->flags;
 
+        ASSERT_RTNL();
+
         if ((dev->promiscuity += inc) == 0)
                 dev->flags &= ~IFF_PROMISC;
         else
@@ -2535,6 +2563,9 @@ static void __dev_set_promiscuity(struct net_device *dev, int inc)
                         dev->name, (dev->flags & IFF_PROMISC),
                         (old_flags & IFF_PROMISC),
                         audit_get_loginuid(current->audit_context));
+
+                if (dev->change_rx_flags)
+                        dev->change_rx_flags(dev, IFF_PROMISC);
         }
 }
 
@@ -2573,11 +2604,16 @@ void dev_set_allmulti(struct net_device *dev, int inc)
 {
         unsigned short old_flags = dev->flags;
 
+        ASSERT_RTNL();
+
         dev->flags |= IFF_ALLMULTI;
         if ((dev->allmulti += inc) == 0)
                 dev->flags &= ~IFF_ALLMULTI;
-        if (dev->flags ^ old_flags)
+        if (dev->flags ^ old_flags) {
+                if (dev->change_rx_flags)
+                        dev->change_rx_flags(dev, IFF_ALLMULTI);
                 dev_set_rx_mode(dev);
+        }
 }
 
 /*
@@ -2778,6 +2814,8 @@ int dev_change_flags(struct net_device *dev, unsigned flags)
         int ret, changes;
         int old_flags = dev->flags;
 
+        ASSERT_RTNL();
+
         /*
          *      Set the flags on our device.
          */
@@ -2792,6 +2830,9 @@ int dev_change_flags(struct net_device *dev, unsigned flags)
          *      Load in the correct multicast list now the flags have changed.
          */
 
+        if (dev->change_rx_flags && (dev->flags ^ flags) & IFF_MULTICAST)
+                dev->change_rx_flags(dev, IFF_MULTICAST);
+
         dev_set_rx_mode(dev);
 
         /*