1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_IF_MACVLAN_H
3#define _LINUX_IF_MACVLAN_H
4
5#include <linux/if_link.h>
6#include <linux/if_vlan.h>
7#include <linux/list.h>
8#include <linux/netdevice.h>
9#include <linux/netlink.h>
10#include <net/netlink.h>
11#include <linux/u64_stats_sync.h>
12
13struct macvlan_port;
14
15#define MACVLAN_MC_FILTER_BITS 8
16#define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
17
18struct macvlan_dev {
19 struct net_device *dev;
20 struct list_head list;
21 struct hlist_node hlist;
22 struct macvlan_port *port;
23 struct net_device *lowerdev;
24 void *accel_priv;
25 struct vlan_pcpu_stats __percpu *pcpu_stats;
26
27 DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
28
29 netdev_features_t set_features;
30 enum macvlan_mode mode;
31 u16 flags;
32 int nest_level;
33 unsigned int macaddr_count;
34#ifdef CONFIG_NET_POLL_CONTROLLER
35 struct netpoll *netpoll;
36#endif
37};
38
39static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
40 unsigned int len, bool success,
41 bool multicast)
42{
43 if (likely(success)) {
44 struct vlan_pcpu_stats *pcpu_stats;
45
46 pcpu_stats = this_cpu_ptr(vlan->pcpu_stats);
47 u64_stats_update_begin(&pcpu_stats->syncp);
48 pcpu_stats->rx_packets++;
49 pcpu_stats->rx_bytes += len;
50 if (multicast)
51 pcpu_stats->rx_multicast++;
52 u64_stats_update_end(&pcpu_stats->syncp);
53 } else {
54 this_cpu_inc(vlan->pcpu_stats->rx_errors);
55 }
56}
57
58extern void macvlan_common_setup(struct net_device *dev);
59
60extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
61 struct nlattr *tb[], struct nlattr *data[],
62 struct netlink_ext_ack *extack);
63
64extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
65
66extern int macvlan_link_register(struct rtnl_link_ops *ops);
67
68#if IS_ENABLED(CONFIG_MACVLAN)
69static inline struct net_device *
70macvlan_dev_real_dev(const struct net_device *dev)
71{
72 struct macvlan_dev *macvlan = netdev_priv(dev);
73
74 return macvlan->lowerdev;
75}
76#else
77static inline struct net_device *
78macvlan_dev_real_dev(const struct net_device *dev)
79{
80 BUG();
81 return NULL;
82}
83#endif
84
85static inline void *macvlan_accel_priv(struct net_device *dev)
86{
87 struct macvlan_dev *macvlan = netdev_priv(dev);
88
89 return macvlan->accel_priv;
90}
91
92static inline bool macvlan_supports_dest_filter(struct net_device *dev)
93{
94 struct macvlan_dev *macvlan = netdev_priv(dev);
95
96 return macvlan->mode == MACVLAN_MODE_PRIVATE ||
97 macvlan->mode == MACVLAN_MODE_VEPA ||
98 macvlan->mode == MACVLAN_MODE_BRIDGE;
99}
100
101static inline int macvlan_release_l2fw_offload(struct net_device *dev)
102{
103 struct macvlan_dev *macvlan = netdev_priv(dev);
104
105 macvlan->accel_priv = NULL;
106 return dev_uc_add(macvlan->lowerdev, dev->dev_addr);
107}
108#endif /* _LINUX_IF_MACVLAN_H */
109