tunneling: Add datapath GRE support.

[sliver-openvswitch.git] / include / openvswitch / gre.h

diff --git a/include/openvswitch/gre.h b/include/openvswitch/gre.h
index 2b24cf6..27417bb 100644 (file)
--- a/include/openvswitch/gre.h
+++ b/include/openvswitch/gre.h
@@ -43,6 +43,34 @@
 #include <linux/if_tunnel.h>
 #include <linux/version.h>
 
+#ifdef __KERNEL__
+#include <linux/types.h>
+#else
+#include <sys/types.h>
+#endif
+
+/* New GRE config. */
+
+#define GRE_F_IN_CSUM          (1 << 0) /* Require incoming packets to have checksums. */
+#define GRE_F_OUT_CSUM         (1 << 1) /* Checksum outgoing packets. */
+#define GRE_F_IN_KEY_MATCH     (1 << 2) /* Store the key in tun_id to match in flow table. */
+#define GRE_F_OUT_KEY_ACTION   (1 << 3) /* Get the key from a SET_TUNNEL action. */
+#define GRE_F_TOS_INHERIT      (1 << 4) /* Inherit the ToS from the inner packet. */
+#define GRE_F_TTL_INHERIT      (1 << 5) /* Inherit the TTL from the inner packet. */
+#define GRE_F_PMTUD            (1 << 6) /* Enable path MTU discovery. */
+
+struct gre_port_config {
+       __u32   flags;
+       __be32  saddr;
+       __be32  daddr;
+       __be32  in_key;
+       __be32  out_key;
+       __u8    tos;
+       __u8    ttl;
+};
+
+/* Old GRE config. */
+
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
 #define GRE_IOCTL_ONLY
 #elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)