Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
12struct macvlan_port;
13struct macvtap_queue;
14
15/*
16 * Maximum times a macvtap device can be opened. This can be used to
17 * configure the number of receive queue, e.g. for multiqueue virtio.
18 */
19#define MAX_TAP_QUEUES 256
20
21#define MACVLAN_MC_FILTER_BITS 8
22#define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
23
24struct macvlan_dev {
25 struct net_device *dev;
26 struct list_head list;
27 struct hlist_node hlist;
28 struct macvlan_port *port;
29 struct net_device *lowerdev;
30 void *fwd_priv;
31 struct vlan_pcpu_stats __percpu *pcpu_stats;
32
33 DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
34
35 netdev_features_t set_features;
36 enum macvlan_mode mode;
37 u16 flags;
38 /* This array tracks active taps. */
39 struct tap_queue __rcu *taps[MAX_TAP_QUEUES];
40 /* This list tracks all taps (both enabled and disabled) */
41 struct list_head queue_list;
42 int numvtaps;
43 int numqueues;
44 netdev_features_t tap_features;
45 int minor;
46 int nest_level;
47#ifdef CONFIG_NET_POLL_CONTROLLER
48 struct netpoll *netpoll;
49#endif
50 unsigned int macaddr_count;
51};
52
53static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
54 unsigned int len, bool success,
55 bool multicast)
56{
57 if (likely(success)) {
58 struct vlan_pcpu_stats *pcpu_stats;
59
60 pcpu_stats = this_cpu_ptr(vlan->pcpu_stats);
61 u64_stats_update_begin(&pcpu_stats->syncp);
62 pcpu_stats->rx_packets++;
63 pcpu_stats->rx_bytes += len;
64 if (multicast)
65 pcpu_stats->rx_multicast++;
66 u64_stats_update_end(&pcpu_stats->syncp);
67 } else {
68 this_cpu_inc(vlan->pcpu_stats->rx_errors);
69 }
70}
71
72extern void macvlan_common_setup(struct net_device *dev);
73
74extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
75 struct nlattr *tb[], struct nlattr *data[]);
76
77extern void macvlan_count_rx(const struct macvlan_dev *vlan,
78 unsigned int len, bool success,
79 bool multicast);
80
81extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
82
83extern int macvlan_link_register(struct rtnl_link_ops *ops);
84
85#if IS_ENABLED(CONFIG_MACVLAN)
86static inline struct net_device *
87macvlan_dev_real_dev(const struct net_device *dev)
88{
89 struct macvlan_dev *macvlan = netdev_priv(dev);
90
91 return macvlan->lowerdev;
92}
93#else
94static inline struct net_device *
95macvlan_dev_real_dev(const struct net_device *dev)
96{
97 BUG();
98 return NULL;
99}
100#endif
101
102#endif /* _LINUX_IF_MACVLAN_H */