v4.19.13 snapshot.
diff --git a/include/linux/if_macvlan.h b/include/linux/if_macvlan.h
new file mode 100644
index 0000000..2e55e4c
--- /dev/null
+++ b/include/linux/if_macvlan.h
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_IF_MACVLAN_H
+#define _LINUX_IF_MACVLAN_H
+
+#include <linux/if_link.h>
+#include <linux/if_vlan.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/netlink.h>
+#include <net/netlink.h>
+#include <linux/u64_stats_sync.h>
+
+struct macvlan_port;
+
+#define MACVLAN_MC_FILTER_BITS 8
+#define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
+
+struct macvlan_dev {
+ struct net_device *dev;
+ struct list_head list;
+ struct hlist_node hlist;
+ struct macvlan_port *port;
+ struct net_device *lowerdev;
+ void *accel_priv;
+ struct vlan_pcpu_stats __percpu *pcpu_stats;
+
+ DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
+
+ netdev_features_t set_features;
+ enum macvlan_mode mode;
+ u16 flags;
+ int nest_level;
+ unsigned int macaddr_count;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ struct netpoll *netpoll;
+#endif
+};
+
+static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
+ unsigned int len, bool success,
+ bool multicast)
+{
+ if (likely(success)) {
+ struct vlan_pcpu_stats *pcpu_stats;
+
+ pcpu_stats = this_cpu_ptr(vlan->pcpu_stats);
+ u64_stats_update_begin(&pcpu_stats->syncp);
+ pcpu_stats->rx_packets++;
+ pcpu_stats->rx_bytes += len;
+ if (multicast)
+ pcpu_stats->rx_multicast++;
+ u64_stats_update_end(&pcpu_stats->syncp);
+ } else {
+ this_cpu_inc(vlan->pcpu_stats->rx_errors);
+ }
+}
+
+extern void macvlan_common_setup(struct net_device *dev);
+
+extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
+ struct nlattr *tb[], struct nlattr *data[],
+ struct netlink_ext_ack *extack);
+
+extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
+
+extern int macvlan_link_register(struct rtnl_link_ops *ops);
+
+#if IS_ENABLED(CONFIG_MACVLAN)
+static inline struct net_device *
+macvlan_dev_real_dev(const struct net_device *dev)
+{
+ struct macvlan_dev *macvlan = netdev_priv(dev);
+
+ return macvlan->lowerdev;
+}
+#else
+static inline struct net_device *
+macvlan_dev_real_dev(const struct net_device *dev)
+{
+ BUG();
+ return NULL;
+}
+#endif
+
+static inline void *macvlan_accel_priv(struct net_device *dev)
+{
+ struct macvlan_dev *macvlan = netdev_priv(dev);
+
+ return macvlan->accel_priv;
+}
+
+static inline bool macvlan_supports_dest_filter(struct net_device *dev)
+{
+ struct macvlan_dev *macvlan = netdev_priv(dev);
+
+ return macvlan->mode == MACVLAN_MODE_PRIVATE ||
+ macvlan->mode == MACVLAN_MODE_VEPA ||
+ macvlan->mode == MACVLAN_MODE_BRIDGE;
+}
+
+static inline int macvlan_release_l2fw_offload(struct net_device *dev)
+{
+ struct macvlan_dev *macvlan = netdev_priv(dev);
+
+ macvlan->accel_priv = NULL;
+ return dev_uc_add(macvlan->lowerdev, dev->dev_addr);
+}
+#endif /* _LINUX_IF_MACVLAN_H */