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group_table.h
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group_table.h
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/* Copyright (c) 2011, TrafficLab, Ericsson Research, Hungary
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Ericsson Research nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*
* Author: Zoltán Lajos Kis <[email protected]>
*/
#ifndef GROUP_TABLE_H
#define GROUP_TABLE_H 1
#include "datapath.h"
#include "group_entry.h"
#include "oflib/ofl.h"
#include "oflib/ofl-messages.h"
#include "packet.h"
/****************************************************************************
* Implementation of group tables.
****************************************************************************/
#define GROUP_TABLE_MAX_ENTRIES 4096
#define GROUP_TABLE_MAX_BUCKETS 8192
struct datapath;
struct packet;
struct sender;
struct group_table {
struct datapath *dp;
struct ofl_msg_multipart_reply_group_features *features;
size_t entries_num;
struct hmap entries;
size_t buckets_num;
};
/* Handles a group_mod message. */
ofl_err
group_table_handle_group_mod(struct group_table *table, struct ofl_msg_group_mod *mod, const struct sender *sender);
/* Handles a group stats request message. */
ofl_err
group_table_handle_stats_request_group(struct group_table *table,
struct ofl_msg_multipart_request_group *msg,
const struct sender *sender);
/* Handles a group desc stats request message */
ofl_err
group_table_handle_stats_request_group_desc(struct group_table *table,
struct ofl_msg_multipart_request_header *msg,
const struct sender *sender);
/* Handles a group features stats request message */
ofl_err
group_table_handle_stats_request_group_features(struct group_table *table,
struct ofl_msg_multipart_request_header *msg UNUSED,
const struct sender *sender);
/* Returns the group entry with the given ID. */
struct group_entry *
group_table_find(struct group_table *table, uint32_t group_id);
/* Executes the given group entry on the packet. */
void
group_table_execute(struct group_table *table, struct packet *packet, uint32_t group_id);
/* Creates a group table. */
struct group_table *
group_table_create(struct datapath *dp);
/* Destroys a group table. */
void
group_table_destroy(struct group_table *table);
#endif /* GROUP_TABLE_H */