if_macvlan.h

  1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef _LINUX_IF_MACVLAN_H
  3#define _LINUX_IF_MACVLAN_H
  4
  5#include <linux/if_link.h>
  6#include <linux/if_vlan.h>
  7#include <linux/list.h>
  8#include <linux/netdevice.h>
  9#include <linux/netlink.h>
 10#include <net/netlink.h>
 11#include <linux/u64_stats_sync.h>
 12
 13struct macvlan_port;
 14
 15#define MACVLAN_MC_FILTER_BITS	8
 16#define MACVLAN_MC_FILTER_SZ	(1 << MACVLAN_MC_FILTER_BITS)
 17
 18struct macvlan_dev {
 19	struct net_device	*dev;
 20	struct list_head	list;
 21	struct hlist_node	hlist;
 22	struct macvlan_port	*port;
 23	struct net_device	*lowerdev;
 24	netdevice_tracker	dev_tracker;
 25	void			*accel_priv;
 26	struct vlan_pcpu_stats __percpu *pcpu_stats;
 27
 28	DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ);
 29
 30	netdev_features_t	set_features;
 31	enum macvlan_mode	mode;
 32	u16			flags;
 33	unsigned int		macaddr_count;
 34	u32			bc_queue_len_req;
 35#ifdef CONFIG_NET_POLL_CONTROLLER
 36	struct netpoll		*netpoll;
 37#endif
 38};
 39
 40static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
 41				    unsigned int len, bool success,
 42				    bool multicast)
 43{
 44	if (likely(success)) {
 45		struct vlan_pcpu_stats *pcpu_stats;
 46
 47		pcpu_stats = get_cpu_ptr(vlan->pcpu_stats);
 48		u64_stats_update_begin(&pcpu_stats->syncp);
 49		u64_stats_inc(&pcpu_stats->rx_packets);
 50		u64_stats_add(&pcpu_stats->rx_bytes, len);
 51		if (multicast)
 52			u64_stats_inc(&pcpu_stats->rx_multicast);
 53		u64_stats_update_end(&pcpu_stats->syncp);
 54		put_cpu_ptr(vlan->pcpu_stats);
 55	} else {
 56		this_cpu_inc(vlan->pcpu_stats->rx_errors);
 57	}
 58}
 59
 60extern void macvlan_common_setup(struct net_device *dev);
 61
 62struct rtnl_newlink_params;
 63
 64extern int macvlan_common_newlink(struct net_device *dev,
 65				  struct rtnl_newlink_params *params,
 66				  struct netlink_ext_ack *extack);
 67
 68extern void macvlan_dellink(struct net_device *dev, struct list_head *head);
 69
 70extern int macvlan_link_register(struct rtnl_link_ops *ops);
 71
 72#if IS_ENABLED(CONFIG_MACVLAN)
 73static inline struct net_device *
 74macvlan_dev_real_dev(const struct net_device *dev)
 75{
 76	struct macvlan_dev *macvlan = netdev_priv(dev);
 77
 78	return macvlan->lowerdev;
 79}
 80#else
 81static inline struct net_device *
 82macvlan_dev_real_dev(const struct net_device *dev)
 83{
 84	BUG();
 85	return NULL;
 86}
 87#endif
 88
 89static inline void *macvlan_accel_priv(struct net_device *dev)
 90{
 91	struct macvlan_dev *macvlan = netdev_priv(dev);
 92
 93	return macvlan->accel_priv;
 94}
 95
 96static inline bool macvlan_supports_dest_filter(struct net_device *dev)
 97{
 98	struct macvlan_dev *macvlan = netdev_priv(dev);
 99
100	return macvlan->mode == MACVLAN_MODE_PRIVATE ||
101	       macvlan->mode == MACVLAN_MODE_VEPA ||
102	       macvlan->mode == MACVLAN_MODE_BRIDGE;
103}
104
105static inline int macvlan_release_l2fw_offload(struct net_device *dev)
106{
107	struct macvlan_dev *macvlan = netdev_priv(dev);
108
109	macvlan->accel_priv = NULL;
110	return dev_uc_add(macvlan->lowerdev, dev->dev_addr);
111}
112#endif /* _LINUX_IF_MACVLAN_H */