1 #ifndef _LINUX_IF_MACVLAN_H 2 #define _LINUX_IF_MACVLAN_H 3 4 #include <linux/if_link.h> 5 #include <linux/list.h> 6 #include <linux/netdevice.h> 7 #include <linux/netlink.h> 8 #include <net/netlink.h> 9 #include <linux/u64_stats_sync.h> 10 11 #if defined(CONFIG_MACVTAP) || defined(CONFIG_MACVTAP_MODULE) 12 struct socket *macvtap_get_socket(struct file *); 13 #else 14 #include <linux/err.h> 15 #include <linux/errno.h> 16 struct file; 17 struct socket; 18 static inline struct socket *macvtap_get_socket(struct file *f) 19 { 20 return ERR_PTR(-EINVAL); 21 } 22 #endif /* CONFIG_MACVTAP */ 23 24 struct macvlan_port; 25 struct macvtap_queue; 26 27 /** 28 * struct macvlan_rx_stats - MACVLAN percpu rx stats 29 * @rx_packets: number of received packets 30 * @rx_bytes: number of received bytes 31 * @rx_multicast: number of received multicast packets 32 * @syncp: synchronization point for 64bit counters 33 * @rx_errors: number of errors 34 */ 35 struct macvlan_rx_stats { 36 u64 rx_packets; 37 u64 rx_bytes; 38 u64 rx_multicast; 39 struct u64_stats_sync syncp; 40 unsigned long rx_errors; 41 }; 42 43 /* 44 * Maximum times a macvtap device can be opened. This can be used to 45 * configure the number of receive queue, e.g. for multiqueue virtio. 46 */ 47 #define MAX_MACVTAP_QUEUES (NR_CPUS < 16 ? NR_CPUS : 16) 48 49 struct macvlan_dev { 50 struct net_device *dev; 51 struct list_head list; 52 struct hlist_node hlist; 53 struct macvlan_port *port; 54 struct net_device *lowerdev; 55 struct macvlan_rx_stats __percpu *rx_stats; 56 enum macvlan_mode mode; 57 int (*receive)(struct sk_buff *skb); 58 int (*forward)(struct net_device *dev, struct sk_buff *skb); 59 struct macvtap_queue *taps[MAX_MACVTAP_QUEUES]; 60 int numvtaps; 61 }; 62 63 static inline void macvlan_count_rx(const struct macvlan_dev *vlan, 64 unsigned int len, bool success, 65 bool multicast) 66 { 67 struct macvlan_rx_stats *rx_stats; 68 69 rx_stats = this_cpu_ptr(vlan->rx_stats); 70 if (likely(success)) { 71 u64_stats_update_begin(&rx_stats->syncp); 72 rx_stats->rx_packets++;; 73 rx_stats->rx_bytes += len; 74 if (multicast) 75 rx_stats->rx_multicast++; 76 u64_stats_update_end(&rx_stats->syncp); 77 } else { 78 rx_stats->rx_errors++; 79 } 80 } 81 82 extern void macvlan_common_setup(struct net_device *dev); 83 84 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev, 85 struct nlattr *tb[], struct nlattr *data[], 86 int (*receive)(struct sk_buff *skb), 87 int (*forward)(struct net_device *dev, 88 struct sk_buff *skb)); 89 90 extern void macvlan_count_rx(const struct macvlan_dev *vlan, 91 unsigned int len, bool success, 92 bool multicast); 93 94 extern void macvlan_dellink(struct net_device *dev, struct list_head *head); 95 96 extern int macvlan_link_register(struct rtnl_link_ops *ops); 97 98 extern netdev_tx_t macvlan_start_xmit(struct sk_buff *skb, 99 struct net_device *dev); 100 101 #endif /* _LINUX_IF_MACVLAN_H */ 102