bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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/* Copyright (c) 2012 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License. */
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#ifndef BFD_H
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#define BFD_H 1
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#define BFD_PACKET_LEN 24
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#define BFD_DEST_PORT 3784
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#include <stdbool.h>
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#include <inttypes.h>
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2014-10-22 14:58:43 +08:00
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#include "packets.h"
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bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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struct bfd;
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2013-12-09 17:34:53 -08:00
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struct dpif_flow_stats;
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bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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struct flow;
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2013-06-17 18:07:33 -07:00
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struct flow_wildcards;
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2013-08-20 23:41:05 +00:00
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struct netdev;
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2015-02-22 03:21:09 -08:00
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struct dp_packet;
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bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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struct smap;
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2015-02-20 14:17:10 -05:00
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long long int bfd_wait(const struct bfd *);
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bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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void bfd_run(struct bfd *);
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bool bfd_should_send_packet(const struct bfd *);
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2015-02-22 03:21:09 -08:00
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void bfd_put_packet(struct bfd *bfd, struct dp_packet *packet,
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2016-06-28 18:14:53 -07:00
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const struct eth_addr eth_src, bool *oam);
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bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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2013-07-16 09:58:42 +00:00
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bool bfd_should_process_flow(const struct bfd *, const struct flow *,
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struct flow_wildcards *);
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bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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void bfd_process_packet(struct bfd *, const struct flow *,
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2015-02-22 03:21:09 -08:00
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const struct dp_packet *);
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bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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2015-07-15 23:41:05 +08:00
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void bfd_init(void);
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bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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struct bfd *bfd_configure(struct bfd *, const char *name,
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2013-08-20 23:41:05 +00:00
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const struct smap *smap,
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struct netdev *netdev);
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2013-06-18 16:40:19 -07:00
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struct bfd *bfd_ref(const struct bfd *);
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void bfd_unref(struct bfd *);
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bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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2013-12-09 17:34:53 -08:00
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void bfd_account_rx(struct bfd *, const struct dpif_flow_stats *);
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2013-11-20 11:15:54 -08:00
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bool bfd_forwarding(struct bfd *);
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2014-04-03 10:20:44 -07:00
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bool bfd_check_status_change(struct bfd *);
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bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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void bfd_get_status(const struct bfd *, struct smap *);
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2013-08-20 23:41:05 +00:00
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void bfd_set_netdev(struct bfd *, const struct netdev *);
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2013-10-16 03:32:32 +00:00
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long long int bfd_wake_time(const struct bfd *);
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bfd: Implement Bidirectional Forwarding Detection.
Traditionally, Open vSwitch has used a variant of 802.1ag "CFM" for
interface liveness detection. This has served us well until now,
but has several serious drawbacks which have steadily become more
inconvenient. First, the 802.1ag standard does not implement
several useful features forcing us to (optionally) break
compatibility. Second, 802.1.ag is not particularly popular
outside of carrier grade networking equipment. Third, 802.1ag is
simply quite awkward.
In an effort to solve the aforementioned problems, this patch
implements BFD which is ubiquitous, well designed, straight
forward, and implements required features in a standard way. The
initial cut of the protocol focuses on getting the basics of the
specification correct, leaving performance optimizations, and
advanced features as future work. The protocol should be
considered experimental pending future testing.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
2012-06-08 12:42:42 -07:00
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#endif /* bfd.h */
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