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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 | #define MACVLAN_MC_FILTER_BITS 8 |
56 | #define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS) |
57 | |
58 | struct macvlan_dev { |
59 | struct net_device *dev; |
60 | struct list_head list; |
61 | struct hlist_node hlist; |
62 | struct macvlan_port *port; |
63 | struct net_device *lowerdev; |
64 | struct macvlan_pcpu_stats __percpu *pcpu_stats; |
65 | |
66 | DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ); |
67 | |
68 | enum macvlan_mode mode; |
69 | u16 flags; |
70 | int (*receive)(struct sk_buff *skb); |
71 | int (*forward)(struct net_device *dev, struct sk_buff *skb); |
72 | struct macvtap_queue *taps[MAX_MACVTAP_QUEUES]; |
73 | int numvtaps; |
74 | int minor; |
75 | }; |
76 | |
77 | static inline void macvlan_count_rx(const struct macvlan_dev *vlan, |
78 | unsigned int len, bool success, |
79 | bool multicast) |
80 | { |
81 | if (likely(success)) { |
82 | struct macvlan_pcpu_stats *pcpu_stats; |
83 | |
84 | pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); |
85 | u64_stats_update_begin(&pcpu_stats->syncp); |
86 | pcpu_stats->rx_packets++; |
87 | pcpu_stats->rx_bytes += len; |
88 | if (multicast) |
89 | pcpu_stats->rx_multicast++; |
90 | u64_stats_update_end(&pcpu_stats->syncp); |
91 | } else { |
92 | this_cpu_inc(vlan->pcpu_stats->rx_errors); |
93 | } |
94 | } |
95 | |
96 | extern void macvlan_common_setup(struct net_device *dev); |
97 | |
98 | extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev, |
99 | struct nlattr *tb[], struct nlattr *data[], |
100 | int (*receive)(struct sk_buff *skb), |
101 | int (*forward)(struct net_device *dev, |
102 | struct sk_buff *skb)); |
103 | |
104 | extern void macvlan_count_rx(const struct macvlan_dev *vlan, |
105 | unsigned int len, bool success, |
106 | bool multicast); |
107 | |
108 | extern void macvlan_dellink(struct net_device *dev, struct list_head *head); |
109 | |
110 | extern int macvlan_link_register(struct rtnl_link_ops *ops); |
111 | |
112 | extern netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, |
113 | struct net_device *dev); |
114 | |
115 | #endif /* _LINUX_IF_MACVLAN_H */ |
116 |
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