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       1                 :            : /* Copyright (c) 2013, 2015 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 ovs_action_push_tnl;
      29                 :            : struct ofport_dpif;
      30                 :            : struct netdev;
      31                 :            : struct netdev_tnl_build_header_params;
      32                 :            : 
      33                 :            : void ofproto_tunnel_init(void);
      34                 :            : bool tnl_port_reconfigure(const struct ofport_dpif *, const struct netdev *,
      35                 :            :                           odp_port_t, bool native_tnl, const char name[]);
      36                 :            : 
      37                 :            : int tnl_port_add(const struct ofport_dpif *, const struct netdev *,
      38                 :            :                  odp_port_t odp_port, bool native_tnl, const char name[]);
      39                 :            : void tnl_port_del(const struct ofport_dpif *);
      40                 :            : 
      41                 :            : const struct ofport_dpif *tnl_port_receive(const struct flow *);
      42                 :            : void tnl_wc_init(struct flow *, struct flow_wildcards *);
      43                 :            : bool tnl_process_ecn(struct flow *);
      44                 :            : odp_port_t tnl_port_send(const struct ofport_dpif *, struct flow *,
      45                 :            :                          struct flow_wildcards *wc);
      46                 :            : 
      47                 :            : /* Returns true if 'flow' should be submitted to tnl_port_receive(). */
      48                 :            : static inline bool
      49                 :     247860 : tnl_port_should_receive(const struct flow *flow)
      50                 :            : {
      51                 :     247860 :     return flow_tnl_dst_is_set(&flow->tunnel);
      52                 :            : }
      53                 :            : 
      54                 :            : int
      55                 :            : tnl_port_build_header(const struct ofport_dpif *ofport,
      56                 :            :                       struct ovs_action_push_tnl *data,
      57                 :            :                       const struct netdev_tnl_build_header_params *params);
      58                 :            : 
      59                 :            : #endif /* tunnel.h */