[deliverable/linux.git] / include / linux / if_macvlan.h

#ifndef _LINUX_IF_MACVLAN_H
#define _LINUX_IF_MACVLAN_H

#include <linux/if_link.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;

/**
 *	struct macvlan_pcpu_stats - MACVLAN percpu stats
 *	@rx_packets: number of received packets
 *	@rx_bytes: number of received bytes
 *	@rx_multicast: number of received multicast packets
 *	@tx_packets: number of transmitted packets
 *	@tx_bytes: number of transmitted bytes
 *	@syncp: synchronization point for 64bit counters
 *	@rx_errors: number of rx errors
 *	@tx_dropped: number of tx dropped packets
 */
struct macvlan_pcpu_stats {
	u64			rx_packets;
	u64			rx_bytes;
	u64			rx_multicast;
	u64			tx_packets;
	u64			tx_bytes;
	struct u64_stats_sync	syncp;
	u32			rx_errors;
	u32			tx_dropped;
};

/*
 * 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 macvlan_pcpu_stats __percpu *pcpu_stats;

	DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);

	netdev_features_t	set_features;
	enum macvlan_mode	mode;
	u16			flags;
	int (*receive)(struct sk_buff *skb);
	int (*forward)(struct net_device *dev, struct sk_buff *skb);
	/* 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;
};

static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
				    unsigned int len, bool success,
				    bool multicast)
{
	if (likely(success)) {
		struct macvlan_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[],
				  int (*receive)(struct sk_buff *skb),
				  int (*forward)(struct net_device *dev,
						 struct sk_buff *skb));

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);

extern netdev_tx_t macvlan_start_xmit(struct sk_buff *skb,
				      struct net_device *dev);

#endif /* _LINUX_IF_MACVLAN_H */
Commit	Line	Data
b863ceb7 PM	1	#ifndef _LINUX_IF_MACVLAN_H
	2	#define _LINUX_IF_MACVLAN_H
	3
fc0663d6 AB	4	#include <linux/if_link.h>
	5	#include <linux/list.h>
	6	#include <linux/netdevice.h>
	7	#include <linux/netlink.h>
	8	#include <net/netlink.h>
bc66154e	9	#include <linux/u64_stats_sync.h>
fc0663d6	10
1d2f41ed	11	#if IS_ENABLED(CONFIG_MACVTAP)
501c774c AB	12	struct socket macvtap_get_socket(struct file );
	13	#else
	14	#include <linux/err.h>
	15	#include <linux/errno.h>
	16	struct file;
	17	struct socket;
	18	static inline struct socket macvtap_get_socket(struct file f)
	19	{
	20	return ERR_PTR(-EINVAL);
	21	}
	22	#endif /* CONFIG_MACVTAP */
	23
fc0663d6 AB	24	struct macvlan_port;
	25	struct macvtap_queue;
	26
	27	/**
8ffab51b	28	* struct macvlan_pcpu_stats - MACVLAN percpu stats
fc0663d6 AB	29	* @rx_packets: number of received packets
fc0663d6 AB	30	* @rx_bytes: number of received bytes
bc66154e	31	* @rx_multicast: number of received multicast packets
8ffab51b ED	32	* @tx_packets: number of transmitted packets
8ffab51b ED	33	* @tx_bytes: number of transmitted bytes
bc66154e	34	* @syncp: synchronization point for 64bit counters
8ffab51b ED	35	* @rx_errors: number of rx errors
8ffab51b ED	36	* @tx_dropped: number of tx dropped packets
fc0663d6	37	*/
8ffab51b	38	struct macvlan_pcpu_stats {
bc66154e ED	39	u64 rx_packets;
	40	u64 rx_bytes;
	41	u64 rx_multicast;
8ffab51b ED	42	u64 tx_packets;
8ffab51b ED	43	u64 tx_bytes;
bc66154e	44	struct u64_stats_sync syncp;
8ffab51b ED	45	u32 rx_errors;
8ffab51b ED	46	u32 tx_dropped;
fc0663d6 AB	47	};
fc0663d6 AB	48
1565c7c1 KK	49	/*
	50	* Maximum times a macvtap device can be opened. This can be used to
	51	* configure the number of receive queue, e.g. for multiqueue virtio.
	52	*/
f0afce01	53	#define MAX_MACVTAP_QUEUES 16
1565c7c1	54
cd431e73 ED	55	#define MACVLAN_MC_FILTER_BITS 8
	56	#define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
	57
fc0663d6 AB	58	struct macvlan_dev {
	59	struct net_device *dev;
	60	struct list_head list;
	61	struct hlist_node hlist;
	62	struct macvlan_port *port;
	63	struct net_device *lowerdev;
a6cc0cfa	64	void *fwd_priv;
8ffab51b	65	struct macvlan_pcpu_stats __percpu *pcpu_stats;
cd431e73 ED	66
	67	DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
	68
2be5c767	69	netdev_features_t set_features;
fc0663d6	70	enum macvlan_mode mode;
df8ef8f3	71	u16 flags;
fc0663d6 AB	72	int (receive)(struct sk_buff skb);
fc0663d6 AB	73	int (forward)(struct net_device dev, struct sk_buff *skb);
815f236d	74	/* This array tracks active taps. */
d9a90a31	75	struct macvtap_queue __rcu *taps[MAX_MACVTAP_QUEUES];
815f236d JW	76	/* This list tracks all taps (both enabled and disabled) */
815f236d JW	77	struct list_head queue_list;
1565c7c1	78	int numvtaps;
815f236d	79	int numqueues;
2be5c767	80	netdev_features_t tap_features;
e09eff7f	81	int minor;
fc0663d6 AB	82	};
	83
	84	static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
	85	unsigned int len, bool success,
	86	bool multicast)
	87	{
fc0663d6	88	if (likely(success)) {
8ffab51b ED	89	struct macvlan_pcpu_stats *pcpu_stats;
	90
	91	pcpu_stats = this_cpu_ptr(vlan->pcpu_stats);
	92	u64_stats_update_begin(&pcpu_stats->syncp);
	93	pcpu_stats->rx_packets++;
	94	pcpu_stats->rx_bytes += len;
fc0663d6	95	if (multicast)
8ffab51b ED	96	pcpu_stats->rx_multicast++;
8ffab51b ED	97	u64_stats_update_end(&pcpu_stats->syncp);
fc0663d6	98	} else {
8ffab51b	99	this_cpu_inc(vlan->pcpu_stats->rx_errors);
fc0663d6 AB	100	}
	101	}
	102
8a35747a HX	103	extern void macvlan_common_setup(struct net_device *dev);
8a35747a HX	104
fc0663d6 AB	105	extern int macvlan_common_newlink(struct net src_net, struct net_device dev,
	106	struct nlattr tb[], struct nlattr data[],
	107	int (receive)(struct sk_buff skb),
	108	int (forward)(struct net_device dev,
	109	struct sk_buff *skb));
	110
	111	extern void macvlan_count_rx(const struct macvlan_dev *vlan,
	112	unsigned int len, bool success,
	113	bool multicast);
	114
	115	extern void macvlan_dellink(struct net_device dev, struct list_head head);
	116
	117	extern int macvlan_link_register(struct rtnl_link_ops *ops);
	118
	119	extern netdev_tx_t macvlan_start_xmit(struct sk_buff *skb,
	120	struct net_device *dev);
	121
b863ceb7	122	#endif /* _LINUX_IF_MACVLAN_H */