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