gre: Restructure tunneling.

[sliver-openvswitch.git] / datapath / linux / compat / include / net / ip_tunnels.h

diff --git a/datapath/linux/compat/include/net/ip_tunnels.h b/datapath/linux/compat/include/net/ip_tunnels.h
new file mode 100644 (file)
index 0000000..ad17c9d
--- /dev/null
+++ b/datapath/linux/compat/include/net/ip_tunnels.h
@@ -0,0 +1,54 @@
+#ifndef __NET_IP_TUNNELS_WRAPPER_H
+#define __NET_IP_TUNNELS_WRAPPER_H 1
+
+#include <linux/if_tunnel.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/types.h>
+#include <net/dsfield.h>
+#include <net/flow.h>
+#include <net/inet_ecn.h>
+#include <net/ip.h>
+#include <net/rtnetlink.h>
+
+#define TUNNEL_CSUM    __cpu_to_be16(0x01)
+#define TUNNEL_ROUTING __cpu_to_be16(0x02)
+#define TUNNEL_KEY     __cpu_to_be16(0x04)
+#define TUNNEL_SEQ     __cpu_to_be16(0x08)
+#define TUNNEL_STRICT  __cpu_to_be16(0x10)
+#define TUNNEL_REC     __cpu_to_be16(0x20)
+#define TUNNEL_VERSION __cpu_to_be16(0x40)
+#define TUNNEL_NO_KEY  __cpu_to_be16(0x80)
+#define TUNNEL_DONT_FRAGMENT   __cpu_to_be16(0x0100)
+
+struct tnl_ptk_info {
+       __be16 flags;
+       __be16 proto;
+       __be32 key;
+       __be32 seq;
+};
+
+#define PACKET_RCVD    0
+#define PACKET_REJECT  1
+
+static inline void tunnel_ip_select_ident(struct sk_buff *skb,
+                                         const struct iphdr  *old_iph,
+                                         struct dst_entry *dst)
+{
+       struct iphdr *iph = ip_hdr(skb);
+
+       /* Use inner packet iph-id if possible. */
+       if (skb->protocol == htons(ETH_P_IP) && old_iph->id)
+               iph->id = old_iph->id;
+       else
+               __ip_select_ident(iph, dst,
+                               (skb_shinfo(skb)->gso_segs ?: 1) - 1);
+}
+
+int iptunnel_xmit(struct net *net, struct rtable *rt,
+                 struct sk_buff *skb,
+                 __be32 src, __be32 dst, __u8 proto,
+                 __u8 tos, __u8 ttl, __be16 df);
+
+int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto);
+#endif /* __NET_IP_TUNNELS_H */