1 #ifndef __NET_VXLAN_WRAPPER_H
2 #define __NET_VXLAN_WRAPPER_H 1
4 #include <linux/skbuff.h>
5 #include <linux/netdevice.h>
9 #include <linux/version.h>
11 #ifdef USE_KERNEL_TUNNEL_API
12 #include_next <net/vxlan.h>
16 /* VXLAN header flags. */
17 #define VXLAN_HF_VNI 0x08000000
19 #define VXLAN_HF_GBP 0x80000000
22 #define VXLAN_N_VID (1u << 24)
23 #define VXLAN_VID_MASK (VXLAN_N_VID - 1)
24 #define VXLAN_HLEN (sizeof(struct udphdr) + sizeof(struct vxlanhdr))
27 #ifndef VXLAN_GBP_USED_BITS
29 * VXLAN Group Based Policy Extension:
30 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
31 * |1|-|-|-|1|-|-|-|R|D|R|R|A|R|R|R| Group Policy ID |
32 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
33 * | VXLAN Network Identifier (VNI) | Reserved |
34 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
36 * D = Don't Learn bit. When set, this bit indicates that the egress
37 * VTEP MUST NOT learn the source address of the encapsulated frame.
39 * A = Indicates that the group policy has already been applied to
40 * this packet. Policies MUST NOT be applied by devices when the
43 * [0] https://tools.ietf.org/html/draft-smith-vxlan-group-policy
47 #ifdef __LITTLE_ENDIAN_BITFIELD
48 __u8 reserved_flags1:3,
53 #elif defined(__BIG_ENDIAN_BITFIELD)
54 __u8 reserved_flags1:1,
60 #error "Please fix <asm/byteorder.h>"
65 #define VXLAN_GBP_USED_BITS (VXLAN_HF_GBP | 0xFFFFFF)
69 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
70 * |R|R|R|R|R|R|R|R|R|D|R|R|A|R|R|R| Group Policy ID |
71 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
73 #define VXLAN_GBP_DONT_LEARN (BIT(6) << 16)
74 #define VXLAN_GBP_POLICY_APPLIED (BIT(3) << 16)
75 #define VXLAN_GBP_ID_MASK (0xFFFF)
77 #define VXLAN_F_GBP 0x800
80 #ifdef HAVE_VXLAN_METADATA
81 static inline int rpl_vxlan_xmit_skb(struct vxlan_sock *vs,
82 struct rtable *rt, struct sk_buff *skb,
83 __be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
84 __be16 src_port, __be16 dst_port,
85 struct vxlan_metadata *md)
87 if (skb_is_gso(skb) && skb_is_encapsulated(skb)) {
92 return vxlan_xmit_skb(vs, rt, skb, src, dst, tos, ttl, df,
93 src_port, dst_port, md, false);
96 #define vxlan_xmit_skb rpl_vxlan_xmit_skb
97 #else /* HAVE_VXLAN_METADATA */
99 struct vxlan_metadata {
104 #define vxlan_sock rpl_vxlan_sock
105 struct rpl_vxlan_sock;
107 #define vxlan_rcv_t rpl_vxlan_rcv_t
108 typedef void (vxlan_rcv_t)(struct vxlan_sock *vh, struct sk_buff *skb,
109 struct vxlan_metadata *md);
111 /* per UDP socket information */
113 struct hlist_node hlist;
116 struct work_struct del_work;
122 #define vxlan_sock_add rpl_vxlan_sock_add
123 struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
124 vxlan_rcv_t *rcv, void *data,
125 bool no_share, u32 flags);
127 #define vxlan_sock_release rpl_vxlan_sock_release
128 void vxlan_sock_release(struct vxlan_sock *vs);
130 #define vxlan_xmit_skb rpl_vxlan_xmit_skb
131 int vxlan_xmit_skb(struct vxlan_sock *vs,
132 struct rtable *rt, struct sk_buff *skb,
133 __be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
134 __be16 src_port, __be16 dst_port,
135 struct vxlan_metadata *md);
137 #define vxlan_src_port rpl_vxlan_src_port
138 __be16 vxlan_src_port(__u16 port_min, __u16 port_max, struct sk_buff *skb);
140 #endif /* !HAVE_VXLAN_METADATA */