1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_IF_MACVLAN_H
3 #define _LINUX_IF_MACVLAN_H
5 #include <linux/if_link.h>
6 #include <linux/if_vlan.h>
7 #include <linux/list.h>
8 #include <linux/netdevice.h>
9 #include <linux/netlink.h>
10 #include <net/netlink.h>
11 #include <linux/u64_stats_sync.h>
17 * Maximum times a macvtap device can be opened. This can be used to
18 * configure the number of receive queue, e.g. for multiqueue virtio.
20 #define MAX_TAP_QUEUES 256
22 #define MACVLAN_MC_FILTER_BITS 8
23 #define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
26 struct net_device *dev;
27 struct list_head list;
28 struct hlist_node hlist;
29 struct macvlan_port *port;
30 struct net_device *lowerdev;
32 struct vlan_pcpu_stats __percpu *pcpu_stats;
34 DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
36 netdev_features_t set_features;
37 enum macvlan_mode mode;
39 /* This array tracks active taps. */
40 struct tap_queue __rcu *taps[MAX_TAP_QUEUES];
41 /* This list tracks all taps (both enabled and disabled) */
42 struct list_head queue_list;
45 netdev_features_t tap_features;
48 #ifdef CONFIG_NET_POLL_CONTROLLER
49 struct netpoll *netpoll;
51 unsigned int macaddr_count;
54 static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
55 unsigned int len, bool success,
58 if (likely(success)) {
59 struct vlan_pcpu_stats *pcpu_stats;
61 pcpu_stats = get_cpu_ptr(vlan->pcpu_stats);
62 u64_stats_update_begin(&pcpu_stats->syncp);
63 pcpu_stats->rx_packets++;
64 pcpu_stats->rx_bytes += len;
66 pcpu_stats->rx_multicast++;
67 u64_stats_update_end(&pcpu_stats->syncp);
68 put_cpu_ptr(vlan->pcpu_stats);
70 this_cpu_inc(vlan->pcpu_stats->rx_errors);
74 extern void macvlan_common_setup(struct net_device *dev);
76 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
77 struct nlattr *tb[], struct nlattr *data[]);
79 extern void macvlan_count_rx(const struct macvlan_dev *vlan,
80 unsigned int len, bool success,
83 extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
85 extern int macvlan_link_register(struct rtnl_link_ops *ops);
87 #if IS_ENABLED(CONFIG_MACVLAN)
88 static inline struct net_device *
89 macvlan_dev_real_dev(const struct net_device *dev)
91 struct macvlan_dev *macvlan = netdev_priv(dev);
93 return macvlan->lowerdev;
96 static inline struct net_device *
97 macvlan_dev_real_dev(const struct net_device *dev)
104 #endif /* _LINUX_IF_MACVLAN_H */