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