[mirror_ubuntu-artful-kernel.git] / include / net / vxlan.h

#ifndef __NET_VXLAN_H
#define __NET_VXLAN_H 1

#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/udp.h>

#define VNI_HASH_BITS	10
#define VNI_HASH_SIZE	(1<<VNI_HASH_BITS)

struct vxlan_sock;
typedef void (vxlan_rcv_t)(struct vxlan_sock *vh, struct sk_buff *skb, __be32 key);

/* per UDP socket information */
struct vxlan_sock {
	struct hlist_node hlist;
	vxlan_rcv_t	 *rcv;
	void		 *data;
	struct work_struct del_work;
	struct socket	 *sock;
	struct rcu_head	  rcu;
	struct hlist_head vni_list[VNI_HASH_SIZE];
	atomic_t	  refcnt;
	struct udp_offload udp_offloads;
};

#define VXLAN_F_LEARN			0x01
#define VXLAN_F_PROXY			0x02
#define VXLAN_F_RSC			0x04
#define VXLAN_F_L2MISS			0x08
#define VXLAN_F_L3MISS			0x10
#define VXLAN_F_IPV6			0x20
#define VXLAN_F_UDP_CSUM		0x40
#define VXLAN_F_UDP_ZERO_CSUM6_TX	0x80
#define VXLAN_F_UDP_ZERO_CSUM6_RX	0x100

struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
				  vxlan_rcv_t *rcv, void *data,
				  bool no_share, u32 flags);

void vxlan_sock_release(struct vxlan_sock *vs);

int vxlan_xmit_skb(struct vxlan_sock *vs,
		   struct rtable *rt, struct sk_buff *skb,
		   __be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
		   __be16 src_port, __be16 dst_port, __be32 vni, bool xnet);

/* IP header + UDP + VXLAN + Ethernet header */
#define VXLAN_HEADROOM (20 + 8 + 8 + 14)
/* IPv6 header + UDP + VXLAN + Ethernet header */
#define VXLAN6_HEADROOM (40 + 8 + 8 + 14)

#if IS_ENABLED(CONFIG_VXLAN)
void vxlan_get_rx_port(struct net_device *netdev);
#else
static inline void vxlan_get_rx_port(struct net_device *netdev)
{
}
#endif
#endif
Commit	Line	Data
012a5729 PS	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;
dc01e7d3	24	struct udp_offload udp_offloads;
012a5729 PS	25	};
012a5729 PS	26
359a0ea9 TH	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
012a5729 PS	37	struct vxlan_sock vxlan_sock_add(struct net net, __be16 port,
012a5729 PS	38	vxlan_rcv_t rcv, void data,
359a0ea9	39	bool no_share, u32 flags);
012a5729 PS	40
012a5729 PS	41	void vxlan_sock_release(struct vxlan_sock *vs);
49560532	42
11796187	43	int vxlan_xmit_skb(struct vxlan_sock *vs,
49560532 PS	44	struct rtable rt, struct sk_buff skb,
49560532 PS	45	__be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
f01ec1c0	46	__be16 src_port, __be16 dst_port, __be32 vni, bool xnet);
49560532	47
e6cd988c JG	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)
53cf5275	54	void vxlan_get_rx_port(struct net_device *netdev);
e6cd988c JG	55	#else
	56	static inline void vxlan_get_rx_port(struct net_device *netdev)
	57	{
	58	}
	59	#endif
012a5729	60	#endif