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 
13 struct macvlan_port;
14 
15 #define MACVLAN_MC_FILTER_BITS	8
16 #define MACVLAN_MC_FILTER_SZ	(1 << MACVLAN_MC_FILTER_BITS)
17 
18 struct 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 	netdevice_tracker	dev_tracker;
25 	void			*accel_priv;
26 	struct vlan_pcpu_stats __percpu *pcpu_stats;
27 
28 	DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
29 
30 	netdev_features_t	set_features;
31 	enum macvlan_mode	mode;
32 	u16			flags;
33 	unsigned int		macaddr_count;
34 	u32			bc_queue_len_req;
35 #ifdef CONFIG_NET_POLL_CONTROLLER
36 	struct netpoll		*netpoll;
37 #endif
38 };
39 
macvlan_count_rx(const struct macvlan_dev * vlan,unsigned int len,bool success,bool multicast)40 static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
41 				    unsigned int len, bool success,
42 				    bool multicast)
43 {
44 	if (likely(success)) {
45 		struct vlan_pcpu_stats *pcpu_stats;
46 
47 		pcpu_stats = get_cpu_ptr(vlan->pcpu_stats);
48 		u64_stats_update_begin(&pcpu_stats->syncp);
49 		u64_stats_inc(&pcpu_stats->rx_packets);
50 		u64_stats_add(&pcpu_stats->rx_bytes, len);
51 		if (multicast)
52 			u64_stats_inc(&pcpu_stats->rx_multicast);
53 		u64_stats_update_end(&pcpu_stats->syncp);
54 		put_cpu_ptr(vlan->pcpu_stats);
55 	} else {
56 		this_cpu_inc(vlan->pcpu_stats->rx_errors);
57 	}
58 }
59 
60 extern void macvlan_common_setup(struct net_device *dev);
61 
62 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
63 				  struct nlattr *tb[], struct nlattr *data[],
64 				  struct netlink_ext_ack *extack);
65 
66 extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
67 
68 extern int macvlan_link_register(struct rtnl_link_ops *ops);
69 
70 #if IS_ENABLED(CONFIG_MACVLAN)
71 static inline struct net_device *
macvlan_dev_real_dev(const struct net_device * dev)72 macvlan_dev_real_dev(const struct net_device *dev)
73 {
74 	struct macvlan_dev *macvlan = netdev_priv(dev);
75 
76 	return macvlan->lowerdev;
77 }
78 #else
79 static inline struct net_device *
macvlan_dev_real_dev(const struct net_device * dev)80 macvlan_dev_real_dev(const struct net_device *dev)
81 {
82 	BUG();
83 	return NULL;
84 }
85 #endif
86 
macvlan_accel_priv(struct net_device * dev)87 static inline void *macvlan_accel_priv(struct net_device *dev)
88 {
89 	struct macvlan_dev *macvlan = netdev_priv(dev);
90 
91 	return macvlan->accel_priv;
92 }
93 
macvlan_supports_dest_filter(struct net_device * dev)94 static inline bool macvlan_supports_dest_filter(struct net_device *dev)
95 {
96 	struct macvlan_dev *macvlan = netdev_priv(dev);
97 
98 	return macvlan->mode == MACVLAN_MODE_PRIVATE ||
99 	       macvlan->mode == MACVLAN_MODE_VEPA ||
100 	       macvlan->mode == MACVLAN_MODE_BRIDGE;
101 }
102 
macvlan_release_l2fw_offload(struct net_device * dev)103 static inline int macvlan_release_l2fw_offload(struct net_device *dev)
104 {
105 	struct macvlan_dev *macvlan = netdev_priv(dev);
106 
107 	macvlan->accel_priv = NULL;
108 	return dev_uc_add(macvlan->lowerdev, dev->dev_addr);
109 }
110 #endif /* _LINUX_IF_MACVLAN_H */
111