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 struct udp_offload udp_offloads; 25 }; 26 27 #define VXLAN_F_LEARN 0x01 28 #define VXLAN_F_PROXY 0x02 29 #define VXLAN_F_RSC 0x04 30 #define VXLAN_F_L2MISS 0x08 31 #define VXLAN_F_L3MISS 0x10 32 #define VXLAN_F_IPV6 0x20 33 #define VXLAN_F_UDP_CSUM 0x40 34 #define VXLAN_F_UDP_ZERO_CSUM6_TX 0x80 35 #define VXLAN_F_UDP_ZERO_CSUM6_RX 0x100 36 37 struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port, 38 vxlan_rcv_t *rcv, void *data, 39 bool no_share, u32 flags); 40 41 void vxlan_sock_release(struct vxlan_sock *vs); 42 43 int vxlan_xmit_skb(struct vxlan_sock *vs, 44 struct rtable *rt, struct sk_buff *skb, 45 __be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df, 46 __be16 src_port, __be16 dst_port, __be32 vni, bool xnet); 47 48 /* IP header + UDP + VXLAN + Ethernet header */ 49 #define VXLAN_HEADROOM (20 + 8 + 8 + 14) 50 /* IPv6 header + UDP + VXLAN + Ethernet header */ 51 #define VXLAN6_HEADROOM (40 + 8 + 8 + 14) 52 53 #if IS_ENABLED(CONFIG_VXLAN) 54 void vxlan_get_rx_port(struct net_device *netdev); 55 #else 56 static inline void vxlan_get_rx_port(struct net_device *netdev) 57 { 58 } 59 #endif 60 #endif 61