1 #ifndef _LINUX_IF_MACVLAN_H
2 #define _LINUX_IF_MACVLAN_H
3
4 #include <linux/if_link.h>
5 #include <linux/if_vlan.h>
6 #include <linux/list.h>
7 #include <linux/netdevice.h>
8 #include <linux/netlink.h>
9 #include <net/netlink.h>
10 #include <linux/u64_stats_sync.h>
11
12 #if IS_ENABLED(CONFIG_MACVTAP)
13 struct socket *macvtap_get_socket(struct file *);
14 #else
15 #include <linux/err.h>
16 #include <linux/errno.h>
17 struct file;
18 struct socket;
macvtap_get_socket(struct file * f)19 static inline struct socket *macvtap_get_socket(struct file *f)
20 {
21 return ERR_PTR(-EINVAL);
22 }
23 #endif /* CONFIG_MACVTAP */
24
25 struct macvlan_port;
26 struct macvtap_queue;
27
28 /*
29 * Maximum times a macvtap device can be opened. This can be used to
30 * configure the number of receive queue, e.g. for multiqueue virtio.
31 */
32 #define MAX_MACVTAP_QUEUES 16
33
34 #define MACVLAN_MC_FILTER_BITS 8
35 #define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
36
37 struct macvlan_dev {
38 struct net_device *dev;
39 struct list_head list;
40 struct hlist_node hlist;
41 struct macvlan_port *port;
42 struct net_device *lowerdev;
43 void *fwd_priv;
44 struct vlan_pcpu_stats __percpu *pcpu_stats;
45
46 DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
47
48 netdev_features_t set_features;
49 enum macvlan_mode mode;
50 u16 flags;
51 /* This array tracks active taps. */
52 struct macvtap_queue __rcu *taps[MAX_MACVTAP_QUEUES];
53 /* This list tracks all taps (both enabled and disabled) */
54 struct list_head queue_list;
55 int numvtaps;
56 int numqueues;
57 netdev_features_t tap_features;
58 int minor;
59 int nest_level;
60 #ifdef CONFIG_NET_POLL_CONTROLLER
61 struct netpoll *netpoll;
62 #endif
63 unsigned int macaddr_count;
64 };
65
macvlan_count_rx(const struct macvlan_dev * vlan,unsigned int len,bool success,bool multicast)66 static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
67 unsigned int len, bool success,
68 bool multicast)
69 {
70 if (likely(success)) {
71 struct vlan_pcpu_stats *pcpu_stats;
72
73 pcpu_stats = this_cpu_ptr(vlan->pcpu_stats);
74 u64_stats_update_begin(&pcpu_stats->syncp);
75 pcpu_stats->rx_packets++;
76 pcpu_stats->rx_bytes += len;
77 if (multicast)
78 pcpu_stats->rx_multicast++;
79 u64_stats_update_end(&pcpu_stats->syncp);
80 } else {
81 this_cpu_inc(vlan->pcpu_stats->rx_errors);
82 }
83 }
84
85 extern void macvlan_common_setup(struct net_device *dev);
86
87 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
88 struct nlattr *tb[], struct nlattr *data[]);
89
90 extern void macvlan_count_rx(const struct macvlan_dev *vlan,
91 unsigned int len, bool success,
92 bool multicast);
93
94 extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
95
96 extern int macvlan_link_register(struct rtnl_link_ops *ops);
97
98 #if IS_ENABLED(CONFIG_MACVLAN)
99 static inline struct net_device *
macvlan_dev_real_dev(const struct net_device * dev)100 macvlan_dev_real_dev(const struct net_device *dev)
101 {
102 struct macvlan_dev *macvlan = netdev_priv(dev);
103
104 return macvlan->lowerdev;
105 }
106 #else
107 static inline struct net_device *
macvlan_dev_real_dev(const struct net_device * dev)108 macvlan_dev_real_dev(const struct net_device *dev)
109 {
110 BUG();
111 return NULL;
112 }
113 #endif
114
115 #endif /* _LINUX_IF_MACVLAN_H */
116