1#ifndef _LINUX_IF_MACVLAN_H 2#define _LINUX_IF_MACVLAN_H 3 4#include <linux/if_link.h> 5#include <linux/if_vlan.h> 6#include <linux/list.h> 7#include <linux/netdevice.h> 8#include <linux/netlink.h> 9#include <net/netlink.h> 10#include <linux/u64_stats_sync.h> 11 12#if IS_ENABLED(CONFIG_MACVTAP) 13struct socket *macvtap_get_socket(struct file *); 14#else 15#include <linux/err.h> 16#include <linux/errno.h> 17struct file; 18struct socket; 19static inline struct socket *macvtap_get_socket(struct file *f) 20{ 21 return ERR_PTR(-EINVAL); 22} 23#endif /* CONFIG_MACVTAP */ 24 25struct macvlan_port; 26struct macvtap_queue; 27 28/* 29 * Maximum times a macvtap device can be opened. This can be used to 30 * configure the number of receive queue, e.g. for multiqueue virtio. 31 */ 32#define MAX_MACVTAP_QUEUES 256 33 34#define MACVLAN_MC_FILTER_BITS 8 35#define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS) 36 37struct macvlan_dev { 38 struct net_device *dev; 39 struct list_head list; 40 struct hlist_node hlist; 41 struct macvlan_port *port; 42 struct net_device *lowerdev; 43 void *fwd_priv; 44 struct vlan_pcpu_stats __percpu *pcpu_stats; 45 46 DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ); 47 48 netdev_features_t set_features; 49 enum macvlan_mode mode; 50 u16 flags; 51 /* This array tracks active taps. */ 52 struct macvtap_queue __rcu *taps[MAX_MACVTAP_QUEUES]; 53 /* This list tracks all taps (both enabled and disabled) */ 54 struct list_head queue_list; 55 int numvtaps; 56 int numqueues; 57 netdev_features_t tap_features; 58 int minor; 59 int nest_level; 60#ifdef CONFIG_NET_POLL_CONTROLLER 61 struct netpoll *netpoll; 62#endif 63 unsigned int macaddr_count; 64}; 65 66static inline void macvlan_count_rx(const struct macvlan_dev *vlan, 67 unsigned int len, bool success, 68 bool multicast) 69{ 70 if (likely(success)) { 71 struct vlan_pcpu_stats *pcpu_stats; 72 73 pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); 74 u64_stats_update_begin(&pcpu_stats->syncp); 75 pcpu_stats->rx_packets++; 76 pcpu_stats->rx_bytes += len; 77 if (multicast) 78 pcpu_stats->rx_multicast++; 79 u64_stats_update_end(&pcpu_stats->syncp); 80 } else { 81 this_cpu_inc(vlan->pcpu_stats->rx_errors); 82 } 83} 84 85extern void macvlan_common_setup(struct net_device *dev); 86 87extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev, 88 struct nlattr *tb[], struct nlattr *data[]); 89 90extern void macvlan_count_rx(const struct macvlan_dev *vlan, 91 unsigned int len, bool success, 92 bool multicast); 93 94extern void macvlan_dellink(struct net_device *dev, struct list_head *head); 95 96extern int macvlan_link_register(struct rtnl_link_ops *ops); 97 98#if IS_ENABLED(CONFIG_MACVLAN) 99static inline struct net_device * 100macvlan_dev_real_dev(const struct net_device *dev) 101{ 102 struct macvlan_dev *macvlan = netdev_priv(dev); 103 104 return macvlan->lowerdev; 105} 106#else 107static inline struct net_device * 108macvlan_dev_real_dev(const struct net_device *dev) 109{ 110 BUG(); 111 return NULL; 112} 113#endif 114 115#endif /* _LINUX_IF_MACVLAN_H */ 116