Edit File: 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 *); struct skb_array *macvtap_get_skb_array(struct file *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); } static inline struct skb_array *macvtap_get_skb_array(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 (NR_CPUS < 16 ? NR_CPUS : 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; /* 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[]); 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); #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 */