1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_IF_MACVLAN_H
3 #define _LINUX_IF_MACVLAN_H
4
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>
12
13 struct macvlan_port;
14
15 #define MACVLAN_MC_FILTER_BITS 8
16 #define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
17
18 struct macvlan_dev {
19 struct net_device *dev;
20 struct list_head list;
21 struct hlist_node hlist;
22 struct macvlan_port *port;
23 struct net_device *lowerdev;
24 void *accel_priv;
25 struct vlan_pcpu_stats __percpu *pcpu_stats;
26
27 DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
28
29 netdev_features_t set_features;
30 enum macvlan_mode mode;
31 u16 flags;
32 unsigned int macaddr_count;
33 #ifdef CONFIG_NET_POLL_CONTROLLER
34 struct netpoll *netpoll;
35 #endif
36 };
37
macvlan_count_rx(const struct macvlan_dev * vlan,unsigned int len,bool success,bool multicast)38 static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
39 unsigned int len, bool success,
40 bool multicast)
41 {
42 if (likely(success)) {
43 struct vlan_pcpu_stats *pcpu_stats;
44
45 pcpu_stats = get_cpu_ptr(vlan->pcpu_stats);
46 u64_stats_update_begin(&pcpu_stats->syncp);
47 pcpu_stats->rx_packets++;
48 pcpu_stats->rx_bytes += len;
49 if (multicast)
50 pcpu_stats->rx_multicast++;
51 u64_stats_update_end(&pcpu_stats->syncp);
52 put_cpu_ptr(vlan->pcpu_stats);
53 } else {
54 this_cpu_inc(vlan->pcpu_stats->rx_errors);
55 }
56 }
57
58 extern void macvlan_common_setup(struct net_device *dev);
59
60 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
61 struct nlattr *tb[], struct nlattr *data[],
62 struct netlink_ext_ack *extack);
63
64 extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
65
66 extern int macvlan_link_register(struct rtnl_link_ops *ops);
67
68 #if IS_ENABLED(CONFIG_MACVLAN)
69 static inline struct net_device *
macvlan_dev_real_dev(const struct net_device * dev)70 macvlan_dev_real_dev(const struct net_device *dev)
71 {
72 struct macvlan_dev *macvlan = netdev_priv(dev);
73
74 return macvlan->lowerdev;
75 }
76 #else
77 static inline struct net_device *
macvlan_dev_real_dev(const struct net_device * dev)78 macvlan_dev_real_dev(const struct net_device *dev)
79 {
80 BUG();
81 return NULL;
82 }
83 #endif
84
macvlan_accel_priv(struct net_device * dev)85 static inline void *macvlan_accel_priv(struct net_device *dev)
86 {
87 struct macvlan_dev *macvlan = netdev_priv(dev);
88
89 return macvlan->accel_priv;
90 }
91
macvlan_supports_dest_filter(struct net_device * dev)92 static inline bool macvlan_supports_dest_filter(struct net_device *dev)
93 {
94 struct macvlan_dev *macvlan = netdev_priv(dev);
95
96 return macvlan->mode == MACVLAN_MODE_PRIVATE ||
97 macvlan->mode == MACVLAN_MODE_VEPA ||
98 macvlan->mode == MACVLAN_MODE_BRIDGE;
99 }
100
macvlan_release_l2fw_offload(struct net_device * dev)101 static inline int macvlan_release_l2fw_offload(struct net_device *dev)
102 {
103 struct macvlan_dev *macvlan = netdev_priv(dev);
104
105 macvlan->accel_priv = NULL;
106 return dev_uc_add(macvlan->lowerdev, dev->dev_addr);
107 }
108 #endif /* _LINUX_IF_MACVLAN_H */
109