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https://github.com/openvswitch/ovs
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002c3f1734
Until now, ovs-controller and the learning-switch code split responsibility for the OpenFlow connection. This commit moves all the responsibility into the learning-switch code. The rationale here is twofold. First, the split itself seems odd; I think there must have been a reason for it at one time, but I don't remember it and don't see one anymore. Second, I intend to make the lswitch code more stateful in upcoming commits, and it seems odd to have the lswitch manage quite a bit of state but not the entity that that state applies to. Signed-off-by: Ben Pfaff <blp@nicira.com>
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/*
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* Copyright (c) 2008, 2010, 2011, 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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*/
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#ifndef LEARNING_SWITCH_H
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#define LEARNING_SWITCH_H 1
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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struct ofpbuf;
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struct rconn;
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enum lswitch_mode {
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LSW_NORMAL, /* Always use OFPP_NORMAL. */
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LSW_FLOOD, /* Always use OFPP_FLOOD. */
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LSW_LEARN /* Learn MACs at controller. */
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};
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struct lswitch_config {
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enum lswitch_mode mode;
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/* 0 to use exact-match flow entries,
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* a OFPFW10_* bitmask to enable specific wildcards,
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* or UINT32_MAX to use the default wildcards (wildcarding as many fields
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* as possible.
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*
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* Ignored when max_idle < 0 (in which case no flows are set up). */
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uint32_t wildcards;
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/* <0: Process every packet at the controller.
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* >=0: Expire flows after they are unused for 'max_idle' seconds.
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* OFP_FLOW_PERMANENT: Set up permanent flows. */
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int max_idle;
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/* Optional "flow mod" requests to send to the switch at connection time,
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* to set up the flow table. */
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const struct ofputil_flow_mod *default_flows;
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size_t n_default_flows;
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/* The OpenFlow queue to use by default. Use UINT32_MAX to avoid
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* specifying a particular queue. */
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uint32_t default_queue;
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/* Maps from a port name to a queue_id. */
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const struct simap *port_queues;
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/* If true, do not reply to any messages from the switch (for debugging
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* fail-open mode). */
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bool mute;
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};
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struct lswitch *lswitch_create(struct rconn *, const struct lswitch_config *);
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bool lswitch_is_alive(const struct lswitch *);
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void lswitch_set_queue(struct lswitch *sw, uint32_t queue);
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void lswitch_run(struct lswitch *);
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void lswitch_wait(struct lswitch *);
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void lswitch_destroy(struct lswitch *);
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void lswitch_mute(struct lswitch *);
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#endif /* learning-switch.h */
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