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// SPDX-License-Identifier: GPL-2.0-or-later
/* zebra table Manager for routing table identifier management
* Copyright (C) 2018 6WIND
*/
#ifndef _TABLE_MANAGER_H
#define _TABLE_MANAGER_H
#include <stdint.h>
#include "lib/linklist.h"
#include "frrevent.h"
#include "lib/ns.h"
#include "zebra/zserv.h"
#ifdef __cplusplus
extern "C" {
#endif
/* routing table identifiers
*
*/
#if !defined(GNU_LINUX)
/* BSD systems
*/
#else
/* Linux Systems
*/
#define RT_TABLE_ID_LOCAL 255
#define RT_TABLE_ID_MAIN 254
#define RT_TABLE_ID_DEFAULT 253
#define RT_TABLE_ID_COMPAT 252
#define RT_TABLE_ID_UNSPEC 0
#endif /* !def(GNU_LINUX) */
/*
* 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);
void table_manager_range(bool add, struct zebra_vrf *zvrf, uint32_t start,
uint32_t end);
#ifdef __cplusplus
}
#endif
#endif /* _TABLE_MANAGER_H */
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