lib/bfd.h

   1 /* Copyright (c) 2012 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 #ifndef BFD_H
  16 #define BFD_H 1
  17
  18 #define BFD_PACKET_LEN 24
  19 #define BFD_DEST_PORT 3784
  20
  21 #include <stdbool.h>
  22 #include <inttypes.h>
  23
  24 #include "packets.h"
  25
  26 struct bfd;
  27 struct dpif_flow_stats;
  28 struct flow;
  29 struct flow_wildcards;
  30 struct netdev;
  31 struct dp_packet;
  32 struct smap;
  33
  34 long long int bfd_wait(const struct bfd *);
  35 void bfd_run(struct bfd *);
  36
  37 bool bfd_should_send_packet(const struct bfd *);
  38 void bfd_put_packet(struct bfd *bfd, struct dp_packet *packet,
  39                     const struct eth_addr eth_src, bool *oam);
  40
  41 bool bfd_should_process_flow(const struct bfd *, const struct flow *,
  42                              struct flow_wildcards *);
  43 void bfd_process_packet(struct bfd *, const struct flow *,
  44                         const struct dp_packet *);
  45
  46 void bfd_init(void);
  47 struct bfd *bfd_configure(struct bfd *, const char *name,
  48                           const struct smap *smap,
  49                           struct netdev *netdev);
  50 struct bfd *bfd_ref(const struct bfd *);
  51 void bfd_unref(struct bfd *);
  52
  53 void bfd_account_rx(struct bfd *, const struct dpif_flow_stats *);
  54 bool bfd_forwarding(struct bfd *);
  55 bool bfd_check_status_change(struct bfd *);
  56 void bfd_get_status(const struct bfd *, struct smap *);
  57 void bfd_set_netdev(struct bfd *, const struct netdev *);
  58 long long int bfd_wake_time(const struct bfd *);
  59 #endif /* bfd.h */