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

/* SPDX-License-Identifier: GPL-2.0 */
#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
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
b863ceb7 PM	2	#ifndef _LINUX_IF_MACVLAN_H
	3	#define _LINUX_IF_MACVLAN_H
	4
fc0663d6	5	#include <linux/if_link.h>
cdf3e274	6	#include <linux/if_vlan.h>
fc0663d6 AB	7	#include <linux/list.h>
	8	#include <linux/netdevice.h>
	9	#include <linux/netlink.h>
	10	#include <net/netlink.h>
bc66154e	11	#include <linux/u64_stats_sync.h>
fc0663d6 AB	12
	13	struct macvlan_port;
	14	struct macvtap_queue;
	15
1565c7c1 KK	16	/*
	17	* Maximum times a macvtap device can be opened. This can be used to
	18	* configure the number of receive queue, e.g. for multiqueue virtio.
	19	*/
635b8c8e	20	#define MAX_TAP_QUEUES 256
1565c7c1	21
cd431e73 ED	22	#define MACVLAN_MC_FILTER_BITS 8
	23	#define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS)
	24
fc0663d6 AB	25	struct macvlan_dev {
	26	struct net_device *dev;
	27	struct list_head list;
	28	struct hlist_node hlist;
	29	struct macvlan_port *port;
	30	struct net_device *lowerdev;
a6cc0cfa	31	void *fwd_priv;
cdf3e274	32	struct vlan_pcpu_stats __percpu *pcpu_stats;
cd431e73 ED	33
	34	DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
	35
2be5c767	36	netdev_features_t set_features;
fc0663d6	37	enum macvlan_mode mode;
df8ef8f3	38	u16 flags;
815f236d	39	/* This array tracks active taps. */
635b8c8e	40	struct tap_queue __rcu *taps[MAX_TAP_QUEUES];
815f236d JW	41	/* This list tracks all taps (both enabled and disabled) */
815f236d JW	42	struct list_head queue_list;
1565c7c1	43	int numvtaps;
815f236d	44	int numqueues;
2be5c767	45	netdev_features_t tap_features;
e09eff7f	46	int minor;
c674ac30	47	int nest_level;
688cea83	48	#ifdef CONFIG_NET_POLL_CONTROLLER
	49	struct netpoll *netpoll;
	50	#endif
79cf79ab	51	unsigned int macaddr_count;
fc0663d6 AB	52	};
	53
	54	static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
	55	unsigned int len, bool success,
	56	bool multicast)
	57	{
fc0663d6	58	if (likely(success)) {
cdf3e274	59	struct vlan_pcpu_stats *pcpu_stats;
8ffab51b ED	60
	61	pcpu_stats = this_cpu_ptr(vlan->pcpu_stats);
	62	u64_stats_update_begin(&pcpu_stats->syncp);
	63	pcpu_stats->rx_packets++;
	64	pcpu_stats->rx_bytes += len;
fc0663d6	65	if (multicast)
8ffab51b ED	66	pcpu_stats->rx_multicast++;
8ffab51b ED	67	u64_stats_update_end(&pcpu_stats->syncp);
fc0663d6	68	} else {
8ffab51b	69	this_cpu_inc(vlan->pcpu_stats->rx_errors);
fc0663d6 AB	70	}
	71	}
	72
8a35747a HX	73	extern void macvlan_common_setup(struct net_device *dev);
8a35747a HX	74
fc0663d6	75	extern int macvlan_common_newlink(struct net src_net, struct net_device dev,
2f6a1b66	76	struct nlattr tb[], struct nlattr data[]);
fc0663d6 AB	77
	78	extern void macvlan_count_rx(const struct macvlan_dev *vlan,
	79	unsigned int len, bool success,
	80	bool multicast);
	81
	82	extern void macvlan_dellink(struct net_device dev, struct list_head head);
	83
	84	extern int macvlan_link_register(struct rtnl_link_ops *ops);
	85
be9eac48 MK	86	#if IS_ENABLED(CONFIG_MACVLAN)
	87	static inline struct net_device *
	88	macvlan_dev_real_dev(const struct net_device *dev)
	89	{
	90	struct macvlan_dev *macvlan = netdev_priv(dev);
	91
	92	return macvlan->lowerdev;
	93	}
	94	#else
	95	static inline struct net_device *
	96	macvlan_dev_real_dev(const struct net_device *dev)
	97	{
	98	BUG();
	99	return NULL;
	100	}
	101	#endif
	102
b863ceb7	103	#endif /* _LINUX_IF_MACVLAN_H */