include/net/vxlan.h

   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 struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
  28                                   vxlan_rcv_t *rcv, void *data,
  29                                   bool no_share, bool ipv6);
  30
  31 void vxlan_sock_release(struct vxlan_sock *vs);
  32
  33 int vxlan_xmit_skb(struct vxlan_sock *vs,
  34                    struct rtable *rt, struct sk_buff *skb,
  35                    __be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
  36                    __be16 src_port, __be16 dst_port, __be32 vni);
  37
  38 __be16 vxlan_src_port(__u16 port_min, __u16 port_max, struct sk_buff *skb);
  39
  40 /* IP header + UDP + VXLAN + Ethernet header */
  41 #define VXLAN_HEADROOM (20 + 8 + 8 + 14)
  42 /* IPv6 header + UDP + VXLAN + Ethernet header */
  43 #define VXLAN6_HEADROOM (40 + 8 + 8 + 14)
  44
  45 #if IS_ENABLED(CONFIG_VXLAN)
  46 void vxlan_get_rx_port(struct net_device *netdev);
  47 #else
  48 static inline void vxlan_get_rx_port(struct net_device *netdev)
  49 {
  50 }
  51 #endif
  52 #endif