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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/list.h> | |
6 | #include <linux/netdevice.h> | |
7 | #include <linux/netlink.h> | |
8 | #include <net/netlink.h> | |
9 | #include <linux/u64_stats_sync.h> | |
10 | ||
11 | #if defined(CONFIG_MACVTAP) || defined(CONFIG_MACVTAP_MODULE) | |
12 | struct socket *macvtap_get_socket(struct file *); | |
13 | #else | |
14 | #include <linux/err.h> | |
15 | #include <linux/errno.h> | |
16 | struct file; | |
17 | struct socket; | |
18 | static inline struct socket *macvtap_get_socket(struct file *f) | |
19 | { | |
20 | return ERR_PTR(-EINVAL); | |
21 | } | |
22 | #endif /* CONFIG_MACVTAP */ | |
23 | ||
24 | struct macvlan_port; | |
25 | struct macvtap_queue; | |
26 | ||
27 | /** | |
28 | * struct macvlan_pcpu_stats - MACVLAN percpu stats | |
29 | * @rx_packets: number of received packets | |
30 | * @rx_bytes: number of received bytes | |
31 | * @rx_multicast: number of received multicast packets | |
32 | * @tx_packets: number of transmitted packets | |
33 | * @tx_bytes: number of transmitted bytes | |
34 | * @syncp: synchronization point for 64bit counters | |
35 | * @rx_errors: number of rx errors | |
36 | * @tx_dropped: number of tx dropped packets | |
37 | */ | |
38 | struct macvlan_pcpu_stats { | |
39 | u64 rx_packets; | |
40 | u64 rx_bytes; | |
41 | u64 rx_multicast; | |
42 | u64 tx_packets; | |
43 | u64 tx_bytes; | |
44 | struct u64_stats_sync syncp; | |
45 | u32 rx_errors; | |
46 | u32 tx_dropped; | |
47 | }; | |
48 | ||
49 | /* | |
50 | * Maximum times a macvtap device can be opened. This can be used to | |
51 | * configure the number of receive queue, e.g. for multiqueue virtio. | |
52 | */ | |
53 | #define MAX_MACVTAP_QUEUES (NR_CPUS < 16 ? NR_CPUS : 16) | |
54 | ||
55 | struct macvlan_dev { | |
56 | struct net_device *dev; | |
57 | struct list_head list; | |
58 | struct hlist_node hlist; | |
59 | struct macvlan_port *port; | |
60 | struct net_device *lowerdev; | |
61 | struct macvlan_pcpu_stats __percpu *pcpu_stats; | |
62 | enum macvlan_mode mode; | |
63 | u16 flags; | |
64 | int (*receive)(struct sk_buff *skb); | |
65 | int (*forward)(struct net_device *dev, struct sk_buff *skb); | |
66 | struct macvtap_queue *taps[MAX_MACVTAP_QUEUES]; | |
67 | int numvtaps; | |
68 | int minor; | |
69 | }; | |
70 | ||
71 | static inline void macvlan_count_rx(const struct macvlan_dev *vlan, | |
72 | unsigned int len, bool success, | |
73 | bool multicast) | |
74 | { | |
75 | if (likely(success)) { | |
76 | struct macvlan_pcpu_stats *pcpu_stats; | |
77 | ||
78 | pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); | |
79 | u64_stats_update_begin(&pcpu_stats->syncp); | |
80 | pcpu_stats->rx_packets++; | |
81 | pcpu_stats->rx_bytes += len; | |
82 | if (multicast) | |
83 | pcpu_stats->rx_multicast++; | |
84 | u64_stats_update_end(&pcpu_stats->syncp); | |
85 | } else { | |
86 | this_cpu_inc(vlan->pcpu_stats->rx_errors); | |
87 | } | |
88 | } | |
89 | ||
90 | extern void macvlan_common_setup(struct net_device *dev); | |
91 | ||
92 | extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev, | |
93 | struct nlattr *tb[], struct nlattr *data[], | |
94 | int (*receive)(struct sk_buff *skb), | |
95 | int (*forward)(struct net_device *dev, | |
96 | struct sk_buff *skb)); | |
97 | ||
98 | extern void macvlan_count_rx(const struct macvlan_dev *vlan, | |
99 | unsigned int len, bool success, | |
100 | bool multicast); | |
101 | ||
102 | extern void macvlan_dellink(struct net_device *dev, struct list_head *head); | |
103 | ||
104 | extern int macvlan_link_register(struct rtnl_link_ops *ops); | |
105 | ||
106 | extern netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, | |
107 | struct net_device *dev); | |
108 | ||
109 | #endif /* _LINUX_IF_MACVLAN_H */ |