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https://github.com/openvswitch/ovs
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76ce943239
With this commit, Open vSwitch permits a bridge to have any number of OpenFlow controllers. When multiple controllers are configured, Open vSwitch connects to all of them simultaneously. Details of configuration are in the vswitch schema documentation. OpenFlow 1.0 does not specify how multiple controllers coordinate in interacting with a single switch, so more than one controller should be specified only if the controllers are themselves designed to coordinate with each other. An upcoming commit will provide a simple means for coordination between multiple controllers. Feature #2495.
45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/*
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* Copyright (c) 2008, 2009, 2010 Nicira Networks.
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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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*/
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#ifndef FAIL_OPEN_H
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#define FAIL_OPEN_H 1
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#include <stdbool.h>
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#include <stdint.h>
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#include "flow.h"
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struct fail_open;
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struct ofproto;
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struct rconn;
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struct switch_status;
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/* Priority of the rule added by the fail-open subsystem when a switch enters
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* fail-open mode. This priority value uniquely identifies a fail-open flow
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* (OpenFlow priorities max out at 65535 and nothing else in Open vSwitch
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* creates flows with this priority). And "f0" is mnemonic for "fail open"! */
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#define FAIL_OPEN_PRIORITY 0xf0f0f0
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struct fail_open *fail_open_create(struct ofproto *, struct switch_status *);
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void fail_open_set_controllers(struct fail_open *, struct rconn **, size_t n);
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void fail_open_destroy(struct fail_open *);
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void fail_open_wait(struct fail_open *);
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bool fail_open_is_active(const struct fail_open *);
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void fail_open_run(struct fail_open *);
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void fail_open_maybe_recover(struct fail_open *);
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void fail_open_flushed(struct fail_open *);
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#endif /* fail-open.h */
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