[mirror_ubuntu-artful-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>

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_TAP_QUEUES	256

#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 tap_queue	__rcu *taps[MAX_TAP_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
	unsigned int		macaddr_count;
};

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 AB	11
	12	struct macvlan_port;
	13	struct macvtap_queue;
	14
1565c7c1 KK	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	*/
635b8c8e	19	#define MAX_TAP_QUEUES 256
1565c7c1	20
cd431e73 ED	21	#define MACVLAN_MC_FILTER_BITS 8
	22	#define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
	23
fc0663d6 AB	24	struct 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;
a6cc0cfa	30	void *fwd_priv;
cdf3e274	31	struct vlan_pcpu_stats __percpu *pcpu_stats;
cd431e73 ED	32
	33	DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
	34
2be5c767	35	netdev_features_t set_features;
fc0663d6	36	enum macvlan_mode mode;
df8ef8f3	37	u16 flags;
815f236d	38	/* This array tracks active taps. */
635b8c8e	39	struct tap_queue __rcu *taps[MAX_TAP_QUEUES];
815f236d JW	40	/* This list tracks all taps (both enabled and disabled) */
815f236d JW	41	struct list_head queue_list;
1565c7c1	42	int numvtaps;
815f236d	43	int numqueues;
2be5c767	44	netdev_features_t tap_features;
e09eff7f	45	int minor;
c674ac30	46	int nest_level;
688cea83	47	#ifdef CONFIG_NET_POLL_CONTROLLER
	48	struct netpoll *netpoll;
	49	#endif
79cf79ab	50	unsigned int macaddr_count;
fc0663d6 AB	51	};
	52
	53	static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
	54	unsigned int len, bool success,
	55	bool multicast)
	56	{
fc0663d6	57	if (likely(success)) {
cdf3e274	58	struct vlan_pcpu_stats *pcpu_stats;
8ffab51b ED	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;
fc0663d6	64	if (multicast)
8ffab51b ED	65	pcpu_stats->rx_multicast++;
8ffab51b ED	66	u64_stats_update_end(&pcpu_stats->syncp);
fc0663d6	67	} else {
8ffab51b	68	this_cpu_inc(vlan->pcpu_stats->rx_errors);
fc0663d6 AB	69	}
	70	}
	71
8a35747a HX	72	extern void macvlan_common_setup(struct net_device *dev);
8a35747a HX	73
fc0663d6	74	extern int macvlan_common_newlink(struct net src_net, struct net_device dev,
2f6a1b66	75	struct nlattr tb[], struct nlattr data[]);
fc0663d6 AB	76
	77	extern void macvlan_count_rx(const struct macvlan_dev *vlan,
	78	unsigned int len, bool success,
	79	bool multicast);
	80
	81	extern void macvlan_dellink(struct net_device dev, struct list_head head);
	82
	83	extern int macvlan_link_register(struct rtnl_link_ops *ops);
	84
be9eac48 MK	85	#if IS_ENABLED(CONFIG_MACVLAN)
	86	static inline struct net_device *
	87	macvlan_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
	94	static inline struct net_device *
	95	macvlan_dev_real_dev(const struct net_device *dev)
	96	{
	97	BUG();
	98	return NULL;
	99	}
	100	#endif
	101
b863ceb7	102	#endif /* _LINUX_IF_MACVLAN_H */