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) 13 struct socket *macvtap_get_socket(struct file *); 14 #else 15 #include <linux/err.h> 16 #include <linux/errno.h> 17 struct file; 18 struct socket; 19 static inline struct socket *macvtap_get_socket(struct file *f) 20 { 21 return ERR_PTR(-EINVAL); 22 } 23 #endif /* CONFIG_MACVTAP */ 24 25 struct macvlan_port; 26 struct 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 16 33 34 #define MACVLAN_MC_FILTER_BITS 8 35 #define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS) 36 37 struct 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 }; 61 62 static inline void macvlan_count_rx(const struct macvlan_dev *vlan, 63 unsigned int len, bool success, 64 bool multicast) 65 { 66 if (likely(success)) { 67 struct vlan_pcpu_stats *pcpu_stats; 68 69 pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); 70 u64_stats_update_begin(&pcpu_stats->syncp); 71 pcpu_stats->rx_packets++; 72 pcpu_stats->rx_bytes += len; 73 if (multicast) 74 pcpu_stats->rx_multicast++; 75 u64_stats_update_end(&pcpu_stats->syncp); 76 } else { 77 this_cpu_inc(vlan->pcpu_stats->rx_errors); 78 } 79 } 80 81 extern void macvlan_common_setup(struct net_device *dev); 82 83 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev, 84 struct nlattr *tb[], struct nlattr *data[]); 85 86 extern void macvlan_count_rx(const struct macvlan_dev *vlan, 87 unsigned int len, bool success, 88 bool multicast); 89 90 extern void macvlan_dellink(struct net_device *dev, struct list_head *head); 91 92 extern int macvlan_link_register(struct rtnl_link_ops *ops); 93 94 #if IS_ENABLED(CONFIG_MACVLAN) 95 static inline struct net_device * 96 macvlan_dev_real_dev(const struct net_device *dev) 97 { 98 struct macvlan_dev *macvlan = netdev_priv(dev); 99 100 return macvlan->lowerdev; 101 } 102 #else 103 static inline struct net_device * 104 macvlan_dev_real_dev(const struct net_device *dev) 105 { 106 BUG(); 107 return NULL; 108 } 109 #endif 110 111 #endif /* _LINUX_IF_MACVLAN_H */ 112