datapath: Abstract tunneling implementation from GRE.

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

diff --git a/include/openvswitch/tunnel.h b/include/openvswitch/tunnel.h
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+++ b/include/openvswitch/tunnel.h
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+/*
+ * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ *
+ * This file is offered under your choice of two licenses: Apache 2.0 or GNU
+ * GPL 2.0 or later.  The permission statements for each of these licenses is
+ * given below.  You may license your modifications to this file under either
+ * of these licenses or both.  If you wish to license your modifications under
+ * only one of these licenses, delete the permission text for the other
+ * license.
+ *
+ * ----------------------------------------------------------------------
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ----------------------------------------------------------------------
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * ----------------------------------------------------------------------
+ */
+
+#ifndef OPENVSWITCH_TUNNEL_H
+#define OPENVSWITCH_TUNNEL_H 1
+
+#include <linux/types.h>
+
+#define TNL_F_CSUM             (1 << 1) /* Checksum packets. */
+#define TNL_F_IN_KEY_MATCH     (1 << 2) /* Store the key in tun_id to match in flow table. */
+#define TNL_F_OUT_KEY_ACTION   (1 << 3) /* Get the key from a SET_TUNNEL action. */
+#define TNL_F_TOS_INHERIT      (1 << 4) /* Inherit the ToS from the inner packet. */
+#define TNL_F_TTL_INHERIT      (1 << 5) /* Inherit the TTL from the inner packet. */
+#define TNL_F_PMTUD            (1 << 6) /* Enable path MTU discovery. */
+
+struct tnl_port_config {
+       __u32   flags;
+       __be32  saddr;
+       __be32  daddr;
+       __be32  in_key;
+       __be32  out_key;
+       __u8    tos;
+       __u8    ttl;
+};
+
+#endif /* openvswitch/tunnel.h */