1 #ifndef __NET_VXLAN_H 2 #define __NET_VXLAN_H 1 3 4 #include <linux/skbuff.h> 5 #include <linux/netdevice.h> 6 #include <linux/udp.h> 7 8 #define VNI_HASH_BITS 10 9 #define VNI_HASH_SIZE (1<<VNI_HASH_BITS) 10 11 struct vxlan_sock; 12 typedef void (vxlan_rcv_t)(struct vxlan_sock *vh, struct sk_buff *skb, __be32 key); 13 14 /* per UDP socket information */ 15 struct vxlan_sock { 16 struct hlist_node hlist; 17 vxlan_rcv_t *rcv; 18 void *data; 19 struct work_struct del_work; 20 struct socket *sock; 21 struct rcu_head rcu; 22 struct hlist_head vni_list[VNI_HASH_SIZE]; 23 atomic_t refcnt; 24 }; 25 26 struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port, 27 vxlan_rcv_t *rcv, void *data, 28 bool no_share, bool ipv6); 29 30 void vxlan_sock_release(struct vxlan_sock *vs); 31 32 int vxlan_xmit_skb(struct vxlan_sock *vs, 33 struct rtable *rt, struct sk_buff *skb, 34 __be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df, 35 __be16 src_port, __be16 dst_port, __be32 vni); 36 37 __be16 vxlan_src_port(__u16 port_min, __u16 port_max, struct sk_buff *skb); 38 39 /* IP header + UDP + VXLAN + Ethernet header */ 40 #define VXLAN_HEADROOM (20 + 8 + 8 + 14) 41 /* IPv6 header + UDP + VXLAN + Ethernet header */ 42 #define VXLAN6_HEADROOM (40 + 8 + 8 + 14) 43 44 #if IS_ENABLED(CONFIG_VXLAN) 45 void vxlan_get_rx_port(struct net_device *netdev); 46 #else 47 static inline void vxlan_get_rx_port(struct net_device *netdev) 48 { 49 } 50 #endif 51 #endif 52