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/* zebra table Manager for routing table identifier management
* Copyright (C) 2018 6WIND
*
* This program 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 of the License, or (at your option)
* any later version.
*
* This program 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 _TABLE_MANAGER_H
#define _TABLE_MANAGER_H
#include <stdint.h>
#include "lib/linklist.h"
#include "lib/thread.h"
#include "lib/ns.h"
#include "zebra/zserv.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
* Table chunk struct
* Client daemon which the chunk belongs to can be identified by either
* proto (daemon protocol) + instance + VRF.
* 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 table_manager_chunk {
vrf_id_t vrf_id;
uint8_t proto;
uint16_t instance;
uint32_t start; /* First table RT ID of the chunk */
uint32_t end; /* Last table RT ID of the chunk */
};
/*
* Main table manager struct
* Holds a linked list of table chunks.
*/
struct table_manager {
struct list *lc_list;
uint32_t start;
uint32_t end;
};
void table_manager_enable(struct zebra_vrf *zvrf);
struct table_manager_chunk *assign_table_chunk(uint8_t proto, uint16_t instance,
uint32_t size,
struct zebra_vrf *zvrf);
int release_table_chunk(uint8_t proto, uint16_t instance, uint32_t start,
uint32_t end, struct zebra_vrf *zvrf);
int release_daemon_table_chunks(struct zserv *client);
void table_manager_disable(struct zebra_vrf *zvrf);
int table_manager_range(struct vty *vty, bool add, struct zebra_vrf *zvrf,
const char *min, const char *max);
#ifdef __cplusplus
}
#endif
#endif /* _TABLE_MANAGER_H */
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