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/* BGP routing table
* Copyright (C) 1998, 2001 Kunihiro Ishiguro
*
* This file is part of GNU Zebra.
*
* GNU Zebra 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.
*
* GNU Zebra 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
*/
#include <zebra.h>
#include "prefix.h"
#include "memory.h"
#include "sockunion.h"
#include "queue.h"
#include "filter.h"
#include "command.h"
#include "bgpd/bgpd.h"
#include "bgpd/bgp_table.h"
void bgp_table_lock(struct bgp_table *rt)
{
rt->lock++;
}
void bgp_table_unlock(struct bgp_table *rt)
{
assert(rt->lock > 0);
rt->lock--;
if (rt->lock != 0) {
return;
}
route_table_finish(rt->route_table);
rt->route_table = NULL;
XFREE(MTYPE_BGP_TABLE, rt);
}
void bgp_table_finish(struct bgp_table **rt)
{
if (*rt != NULL) {
bgp_table_unlock(*rt);
*rt = NULL;
}
}
/*
* bgp_node_create
*/
static struct route_node *bgp_node_create(route_table_delegate_t *delegate,
struct route_table *table)
{
struct bgp_node *node;
node = XCALLOC(MTYPE_BGP_NODE, sizeof(struct bgp_node));
return bgp_node_to_rnode(node);
}
/*
* bgp_node_destroy
*/
static void bgp_node_destroy(route_table_delegate_t *delegate,
struct route_table *table, struct route_node *node)
{
struct bgp_node *bgp_node;
bgp_node = bgp_node_from_rnode(node);
XFREE(MTYPE_BGP_NODE, bgp_node);
}
/*
* Function vector to customize the behavior of the route table
* library for BGP route tables.
*/
route_table_delegate_t bgp_table_delegate = {.create_node = bgp_node_create,
.destroy_node = bgp_node_destroy};
/*
* bgp_table_init
*/
struct bgp_table *bgp_table_init(afi_t afi, safi_t safi)
{
struct bgp_table *rt;
rt = XCALLOC(MTYPE_BGP_TABLE, sizeof(struct bgp_table));
rt->route_table = route_table_init_with_delegate(&bgp_table_delegate);
/*
* Set up back pointer to bgp_table.
*/
rt->route_table->info = rt;
bgp_table_lock(rt);
rt->afi = afi;
rt->safi = safi;
return rt;
}
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