[net-next-2.6.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 defined(CONFIG_MACVTAP) || defined(CONFIG_MACVTAP_MODULE)
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_rx_stats - MACVLAN percpu rx stats
 *	@rx_packets: number of received packets
 *	@rx_bytes: number of received bytes
 *	@rx_multicast: number of received multicast packets
 *	@syncp: synchronization point for 64bit counters
 *	@rx_errors: number of errors
 */
struct macvlan_rx_stats {
	u64			rx_packets;
	u64			rx_bytes;
	u64			rx_multicast;
	struct u64_stats_sync	syncp;
	unsigned long		rx_errors;
};

/*
 * 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	(NR_CPUS < 16 ? NR_CPUS : 16)

struct macvlan_dev {
	struct net_device	*dev;
	struct list_head	list;
	struct hlist_node	hlist;
	struct macvlan_port	*port;
	struct net_device	*lowerdev;
	struct macvlan_rx_stats __percpu *rx_stats;
	enum macvlan_mode	mode;
	int (*receive)(struct sk_buff *skb);
	int (*forward)(struct net_device *dev, struct sk_buff *skb);
	struct macvtap_queue	*taps[MAX_MACVTAP_QUEUES];
	int			numvtaps;
};

static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
				    unsigned int len, bool success,
				    bool multicast)
{
	struct macvlan_rx_stats *rx_stats;

	rx_stats = this_cpu_ptr(vlan->rx_stats);
	if (likely(success)) {
		u64_stats_update_begin(&rx_stats->syncp);
		rx_stats->rx_packets++;
		rx_stats->rx_bytes += len;
		if (multicast)
			rx_stats->rx_multicast++;
		u64_stats_update_end(&rx_stats->syncp);
	} else {
		rx_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
501c774c AB	11	#if defined(CONFIG_MACVTAP) \|\| defined(CONFIG_MACVTAP_MODULE)
	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	/**
	28	* struct macvlan_rx_stats - MACVLAN percpu rx stats
	29	* @rx_packets: number of received packets
	30	* @rx_bytes: number of received bytes
bc66154e ED	31	* @rx_multicast: number of received multicast packets
bc66154e ED	32	* @syncp: synchronization point for 64bit counters
fc0663d6 AB	33	* @rx_errors: number of errors
	34	*/
	35	struct macvlan_rx_stats {
bc66154e ED	36	u64 rx_packets;
	37	u64 rx_bytes;
	38	u64 rx_multicast;
	39	struct u64_stats_sync syncp;
	40	unsigned long rx_errors;
fc0663d6 AB	41	};
fc0663d6 AB	42
1565c7c1 KK	43	/*
	44	* Maximum times a macvtap device can be opened. This can be used to
	45	* configure the number of receive queue, e.g. for multiqueue virtio.
	46	*/
	47	#define MAX_MACVTAP_QUEUES (NR_CPUS < 16 ? NR_CPUS : 16)
	48
fc0663d6 AB	49	struct macvlan_dev {
	50	struct net_device *dev;
	51	struct list_head list;
	52	struct hlist_node hlist;
	53	struct macvlan_port *port;
	54	struct net_device *lowerdev;
47d74275	55	struct macvlan_rx_stats __percpu *rx_stats;
fc0663d6 AB	56	enum macvlan_mode mode;
	57	int (receive)(struct sk_buff skb);
	58	int (forward)(struct net_device dev, struct sk_buff *skb);
1565c7c1 KK	59	struct macvtap_queue *taps[MAX_MACVTAP_QUEUES];
1565c7c1 KK	60	int numvtaps;
fc0663d6 AB	61	};
	62
	63	static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
	64	unsigned int len, bool success,
	65	bool multicast)
	66	{
	67	struct macvlan_rx_stats *rx_stats;
	68
bc66154e	69	rx_stats = this_cpu_ptr(vlan->rx_stats);
fc0663d6	70	if (likely(success)) {
bc66154e	71	u64_stats_update_begin(&rx_stats->syncp);
c59504eb	72	rx_stats->rx_packets++;
fc0663d6 AB	73	rx_stats->rx_bytes += len;
fc0663d6 AB	74	if (multicast)
bc66154e ED	75	rx_stats->rx_multicast++;
bc66154e ED	76	u64_stats_update_end(&rx_stats->syncp);
fc0663d6 AB	77	} else {
	78	rx_stats->rx_errors++;
	79	}
	80	}
	81
8a35747a HX	82	extern void macvlan_common_setup(struct net_device *dev);
8a35747a HX	83
fc0663d6 AB	84	extern int macvlan_common_newlink(struct net src_net, struct net_device dev,
	85	struct nlattr tb[], struct nlattr data[],
	86	int (receive)(struct sk_buff skb),
	87	int (forward)(struct net_device dev,
	88	struct sk_buff *skb));
	89
	90	extern void macvlan_count_rx(const struct macvlan_dev *vlan,
	91	unsigned int len, bool success,
	92	bool multicast);
	93
	94	extern void macvlan_dellink(struct net_device dev, struct list_head head);
	95
	96	extern int macvlan_link_register(struct rtnl_link_ops *ops);
	97
	98	extern netdev_tx_t macvlan_start_xmit(struct sk_buff *skb,
	99	struct net_device *dev);
	100
b863ceb7	101	#endif /* _LINUX_IF_MACVLAN_H */