Merge tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[deliverable/linux.git] / include / net / vxlan.h

diff --git a/include/net/vxlan.h b/include/net/vxlan.h
index d5f59f3fc35df67141c8234a8741ab5b49501ad1..57cccd0052e58dd124ec997174d8cd9ff885be99 100644 (file)
--- a/include/net/vxlan.h
+++ b/include/net/vxlan.h
@@ -8,6 +8,12 @@
 #define VNI_HASH_BITS  10
 #define VNI_HASH_SIZE  (1<<VNI_HASH_BITS)
 
+/* VXLAN protocol header */
+struct vxlanhdr {
+       __be32 vx_flags;
+       __be32 vx_vni;
+};
+
 struct vxlan_sock;
 typedef void (vxlan_rcv_t)(struct vxlan_sock *vh, struct sk_buff *skb, __be32 key);
 
@@ -45,6 +51,18 @@ int vxlan_xmit_skb(struct vxlan_sock *vs,
                   __be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
                   __be16 src_port, __be16 dst_port, __be32 vni, bool xnet);
 
+static inline bool vxlan_gso_check(struct sk_buff *skb)
+{
+       if ((skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL) &&
+           (skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
+            skb->inner_protocol != htons(ETH_P_TEB) ||
+            (skb_inner_mac_header(skb) - skb_transport_header(skb) !=
+             sizeof(struct udphdr) + sizeof(struct vxlanhdr))))
+               return false;
+
+       return true;
+}
+
 /* IP header + UDP + VXLAN + Ethernet header */
 #define VXLAN_HEADROOM (20 + 8 + 8 + 14)
 /* IPv6 header + UDP + VXLAN + Ethernet header */