if_macvlan.h revision ab95bfe01f9872459c8678572ccadbf646badad0 
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
10#if defined(CONFIG_MACVTAP) || defined(CONFIG_MACVTAP_MODULE)
11struct socket *macvtap_get_socket(struct file *);
12#else
13#include <linux/err.h>
14#include <linux/errno.h>
15struct file;
16struct socket;
17static inline struct socket *macvtap_get_socket(struct file *f)
18{
19	return ERR_PTR(-EINVAL);
20}
21#endif /* CONFIG_MACVTAP */
22
23struct macvlan_port;
24struct macvtap_queue;
25
26/**
27 *	struct macvlan_rx_stats - MACVLAN percpu rx stats
28 *	@rx_packets: number of received packets
29 *	@rx_bytes: number of received bytes
30 *	@multicast: number of received multicast packets
31 *	@rx_errors: number of errors
32 */
33struct macvlan_rx_stats {
34	unsigned long rx_packets;
35	unsigned long rx_bytes;
36	unsigned long multicast;
37	unsigned long rx_errors;
38};
39
40struct macvlan_dev {
41	struct net_device	*dev;
42	struct list_head	list;
43	struct hlist_node	hlist;
44	struct macvlan_port	*port;
45	struct net_device	*lowerdev;
46	struct macvlan_rx_stats __percpu *rx_stats;
47	enum macvlan_mode	mode;
48	int (*receive)(struct sk_buff *skb);
49	int (*forward)(struct net_device *dev, struct sk_buff *skb);
50	struct macvtap_queue	*tap;
51};
52
53static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
54				    unsigned int len, bool success,
55				    bool multicast)
56{
57	struct macvlan_rx_stats *rx_stats;
58
59	rx_stats = per_cpu_ptr(vlan->rx_stats, smp_processor_id());
60	if (likely(success)) {
61		rx_stats->rx_packets++;;
62		rx_stats->rx_bytes += len;
63		if (multicast)
64			rx_stats->multicast++;
65	} else {
66		rx_stats->rx_errors++;
67	}
68}
69
70extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
71				  struct nlattr *tb[], struct nlattr *data[],
72				  int (*receive)(struct sk_buff *skb),
73				  int (*forward)(struct net_device *dev,
74						 struct sk_buff *skb));
75
76extern void macvlan_count_rx(const struct macvlan_dev *vlan,
77			     unsigned int len, bool success,
78			     bool multicast);
79
80extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
81
82extern int macvlan_link_register(struct rtnl_link_ops *ops);
83
84extern netdev_tx_t macvlan_start_xmit(struct sk_buff *skb,
85				      struct net_device *dev);
86
87#endif /* _LINUX_IF_MACVLAN_H */
88