ofproto/tunnel.h

   1 /* Copyright (c) 2013 Nicira, Inc.
   2  *
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #ifndef TUNNEL_H
  17 #define TUNNEL_H 1
  18
  19 #include <stdbool.h>
  20 #include <stdint.h>
  21 #include "flow.h"
  22
  23 /* Tunnel port emulation layer.
  24  *
  25  * These functions emulate tunnel virtual ports based on the outer
  26  * header information from the kernel. */
  27
  28 struct ofport_dpif;
  29 struct netdev;
  30
  31 bool tnl_port_reconfigure(const struct ofport_dpif *, const struct netdev *,
  32                           odp_port_t);
  33
  34 void tnl_port_add(const struct ofport_dpif *, const struct netdev *,
  35                   odp_port_t odp_port);
  36 void tnl_port_del(const struct ofport_dpif *);
  37
  38 const struct ofport_dpif *tnl_port_receive(const struct flow *);
  39 bool tnl_xlate_init(const struct flow *base_flow, struct flow *flow,
  40                     struct flow_wildcards *);
  41 odp_port_t tnl_port_send(const struct ofport_dpif *, struct flow *,
  42                          struct flow_wildcards *wc);
  43
  44 /* Returns true if 'flow' should be submitted to tnl_port_receive(). */
  45 static inline bool
  46 tnl_port_should_receive(const struct flow *flow)
  47 {
  48     return flow->tunnel.ip_dst != 0;
  49 }
  50
  51 #endif /* tunnel.h */