[mirror_ubuntu-bionic-kernel.git] / include / linux / if_macvlan.h

#ifndef _LINUX_IF_MACVLAN_H
#define _LINUX_IF_MACVLAN_H

#include <linux/if_link.h>
#include <linux/if_vlan.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <net/netlink.h>
#include <linux/u64_stats_sync.h>

#if IS_ENABLED(CONFIG_MACVTAP)
struct socket *macvtap_get_socket(struct file *);
#else
#include <linux/err.h>
#include <linux/errno.h>
struct file;
struct socket;
static inline struct socket *macvtap_get_socket(struct file *f)
{
	return ERR_PTR(-EINVAL);
}
#endif /* CONFIG_MACVTAP */

struct macvlan_port;
struct macvtap_queue;

/*
 * Maximum times a macvtap device can be opened. This can be used to
 * configure the number of receive queue, e.g. for multiqueue virtio.
 */
#define MAX_MACVTAP_QUEUES	16

#define MACVLAN_MC_FILTER_BITS	8
#define MACVLAN_MC_FILTER_SZ	(1 << MACVLAN_MC_FILTER_BITS)

struct macvlan_dev {
	struct net_device	*dev;
	struct list_head	list;
	struct hlist_node	hlist;
	struct macvlan_port	*port;
	struct net_device	*lowerdev;
	void			*fwd_priv;
	struct vlan_pcpu_stats __percpu *pcpu_stats;

	DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);

	netdev_features_t	set_features;
	enum macvlan_mode	mode;
	u16			flags;
	/* This array tracks active taps. */
	struct macvtap_queue	__rcu *taps[MAX_MACVTAP_QUEUES];
	/* This list tracks all taps (both enabled and disabled) */
	struct list_head	queue_list;
	int			numvtaps;
	int			numqueues;
	netdev_features_t	tap_features;
	int			minor;
	int			nest_level;
#ifdef CONFIG_NET_POLL_CONTROLLER
	struct netpoll		*netpoll;
#endif
};

static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
				    unsigned int len, bool success,
				    bool multicast)
{
	if (likely(success)) {
		struct vlan_pcpu_stats *pcpu_stats;

		pcpu_stats = this_cpu_ptr(vlan->pcpu_stats);
		u64_stats_update_begin(&pcpu_stats->syncp);
		pcpu_stats->rx_packets++;
		pcpu_stats->rx_bytes += len;
		if (multicast)
			pcpu_stats->rx_multicast++;
		u64_stats_update_end(&pcpu_stats->syncp);
	} else {
		this_cpu_inc(vlan->pcpu_stats->rx_errors);
	}
}

extern void macvlan_common_setup(struct net_device *dev);

extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
				  struct nlattr *tb[], struct nlattr *data[]);

extern void macvlan_count_rx(const struct macvlan_dev *vlan,
			     unsigned int len, bool success,
			     bool multicast);

extern void macvlan_dellink(struct net_device *dev, struct list_head *head);

extern int macvlan_link_register(struct rtnl_link_ops *ops);

#if IS_ENABLED(CONFIG_MACVLAN)
static inline struct net_device *
macvlan_dev_real_dev(const struct net_device *dev)
{
	struct macvlan_dev *macvlan = netdev_priv(dev);

	return macvlan->lowerdev;
}
#else
static inline struct net_device *
macvlan_dev_real_dev(const struct net_device *dev)
{
	BUG();
	return NULL;
}
#endif

#endif /* _LINUX_IF_MACVLAN_H */
Commit	Line	Data
b863ceb7 PM	1	#ifndef _LINUX_IF_MACVLAN_H
	2	#define _LINUX_IF_MACVLAN_H
	3
fc0663d6	4	#include <linux/if_link.h>
cdf3e274	5	#include <linux/if_vlan.h>
fc0663d6 AB	6	#include <linux/list.h>
	7	#include <linux/netdevice.h>
	8	#include <linux/netlink.h>
	9	#include <net/netlink.h>
bc66154e	10	#include <linux/u64_stats_sync.h>
fc0663d6	11
1d2f41ed	12	#if IS_ENABLED(CONFIG_MACVTAP)
501c774c AB	13	struct socket macvtap_get_socket(struct file );
	14	#else
	15	#include <linux/err.h>
	16	#include <linux/errno.h>
	17	struct file;
	18	struct socket;
	19	static inline struct socket macvtap_get_socket(struct file f)
	20	{
	21	return ERR_PTR(-EINVAL);
	22	}
	23	#endif /* CONFIG_MACVTAP */
	24
fc0663d6 AB	25	struct macvlan_port;
	26	struct macvtap_queue;
	27
1565c7c1 KK	28	/*
	29	* Maximum times a macvtap device can be opened. This can be used to
	30	* configure the number of receive queue, e.g. for multiqueue virtio.
	31	*/
f0afce01	32	#define MAX_MACVTAP_QUEUES 16
1565c7c1	33
cd431e73 ED	34	#define MACVLAN_MC_FILTER_BITS 8
	35	#define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
	36
fc0663d6 AB	37	struct macvlan_dev {
	38	struct net_device *dev;
	39	struct list_head list;
	40	struct hlist_node hlist;
	41	struct macvlan_port *port;
	42	struct net_device *lowerdev;
a6cc0cfa	43	void *fwd_priv;
cdf3e274	44	struct vlan_pcpu_stats __percpu *pcpu_stats;
cd431e73 ED	45
	46	DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
	47
2be5c767	48	netdev_features_t set_features;
fc0663d6	49	enum macvlan_mode mode;
df8ef8f3	50	u16 flags;
815f236d	51	/* This array tracks active taps. */
d9a90a31	52	struct macvtap_queue __rcu *taps[MAX_MACVTAP_QUEUES];
815f236d JW	53	/* This list tracks all taps (both enabled and disabled) */
815f236d JW	54	struct list_head queue_list;
1565c7c1	55	int numvtaps;
815f236d	56	int numqueues;
2be5c767	57	netdev_features_t tap_features;
e09eff7f	58	int minor;
c674ac30	59	int nest_level;
688cea83	60	#ifdef CONFIG_NET_POLL_CONTROLLER
	61	struct netpoll *netpoll;
	62	#endif
fc0663d6 AB	63	};
	64
	65	static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
	66	unsigned int len, bool success,
	67	bool multicast)
	68	{
fc0663d6	69	if (likely(success)) {
cdf3e274	70	struct vlan_pcpu_stats *pcpu_stats;
8ffab51b ED	71
	72	pcpu_stats = this_cpu_ptr(vlan->pcpu_stats);
	73	u64_stats_update_begin(&pcpu_stats->syncp);
	74	pcpu_stats->rx_packets++;
	75	pcpu_stats->rx_bytes += len;
fc0663d6	76	if (multicast)
8ffab51b ED	77	pcpu_stats->rx_multicast++;
8ffab51b ED	78	u64_stats_update_end(&pcpu_stats->syncp);
fc0663d6	79	} else {
8ffab51b	80	this_cpu_inc(vlan->pcpu_stats->rx_errors);
fc0663d6 AB	81	}
	82	}
	83
8a35747a HX	84	extern void macvlan_common_setup(struct net_device *dev);
8a35747a HX	85
fc0663d6	86	extern int macvlan_common_newlink(struct net src_net, struct net_device dev,
2f6a1b66	87	struct nlattr tb[], struct nlattr data[]);
fc0663d6 AB	88
	89	extern void macvlan_count_rx(const struct macvlan_dev *vlan,
	90	unsigned int len, bool success,
	91	bool multicast);
	92
	93	extern void macvlan_dellink(struct net_device dev, struct list_head head);
	94
	95	extern int macvlan_link_register(struct rtnl_link_ops *ops);
	96
be9eac48 MK	97	#if IS_ENABLED(CONFIG_MACVLAN)
	98	static inline struct net_device *
	99	macvlan_dev_real_dev(const struct net_device *dev)
	100	{
	101	struct macvlan_dev *macvlan = netdev_priv(dev);
	102
	103	return macvlan->lowerdev;
	104	}
	105	#else
	106	static inline struct net_device *
	107	macvlan_dev_real_dev(const struct net_device *dev)
	108	{
	109	BUG();
	110	return NULL;
	111	}
	112	#endif
	113
b863ceb7	114	#endif /* _LINUX_IF_MACVLAN_H */