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/*
* Label Manager header
*
* Copyright (C) 2017 by Bingen Eguzkitza,
* Volta Networks Inc.
*
* This file is part of FreeRangeRouting (FRR)
*
* FRR is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* FRR is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _LABEL_MANAGER_H
#define _LABEL_MANAGER_H
#include <stdint.h>
#include "lib/linklist.h"
#include "lib/thread.h"
#include "zebra/zserv.h"
#define NO_PROTO 0
/*
* Label chunk struct
* Client daemon which the chunk belongs to can be identified by either
* proto (daemon protocol) + instance.
* If the client then passes a non-empty value to keep field when it requests
* for chunks, the chunks won't be garbage collected and the client will be
* responsible of its release.
* Otherwise, if the keep field is not set (value 0) for the chunk, it will be
* automatically released when the client disconnects or when it reconnects
* (in case it died unexpectedly, we can know it's the same because it will have
* the same proto and instance values)
*/
struct label_manager_chunk {
uint8_t proto;
unsigned short instance;
uint8_t keep;
uint32_t start; /* First label of the chunk */
uint32_t end; /* Last label of the chunk */
};
/*
* Main label manager struct
* Holds a linked list of label chunks.
*/
struct label_manager {
struct list *lc_list;
};
bool lm_is_external;
int zread_relay_label_manager_request(int cmd, struct zserv *zserv,
struct stream *msg, vrf_id_t vrf_id);
void label_manager_init(char *lm_zserv_path);
struct label_manager_chunk *assign_label_chunk(uint8_t proto,
unsigned short instance,
uint8_t keep, uint32_t size);
int release_label_chunk(uint8_t proto, unsigned short instance, uint32_t start,
uint32_t end);
int release_daemon_label_chunks(struct zserv *client);
void label_manager_close(void);
#endif /* _LABEL_MANAGER_H */
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