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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; | |
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 256 | |
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 | ||
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 * | |
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 * | |
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 */ |