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/*
* PIM for Quagga
* Copyright (C) 2015 Cumulus Networks, Inc.
* Donald Sharp
*
* 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
*/
#include <zebra.h>
#include "memory.h"
#include "log.h"
#include "if.h"
#include "pimd.h"
#include "pim_str.h"
#include "pim_br.h"
#include "linklist.h"
struct pim_br {
struct prefix_sg sg;
struct in_addr pmbr;
};
struct in_addr pim_br_unknown = { .s_addr = 0 };
static struct list *pim_br_list = NULL;
struct in_addr
pim_br_get_pmbr (struct prefix_sg *sg)
{
struct listnode *node;
struct pim_br *pim_br;
for (ALL_LIST_ELEMENTS_RO (pim_br_list, node, pim_br)) {
if (sg->src.s_addr == pim_br->sg.src.s_addr &&
sg->grp.s_addr == pim_br->sg.grp.s_addr)
return pim_br->pmbr;
}
return pim_br_unknown;
}
void
pim_br_set_pmbr (struct prefix_sg *sg, struct in_addr br)
{
struct listnode *node, *next;
struct pim_br *pim_br;
for (ALL_LIST_ELEMENTS (pim_br_list, node, next, pim_br)) {
if (sg->src.s_addr == pim_br->sg.src.s_addr &&
sg->grp.s_addr == pim_br->sg.grp.s_addr)
break;
}
if (!pim_br) {
pim_br = XCALLOC(MTYPE_PIM_BR, sizeof (*pim_br));
if (!pim_br) {
zlog_err("PIM XCALLOC(%zu) failure", sizeof(*pim_br));
return;
}
pim_br->sg = *sg;
listnode_add(pim_br_list, pim_br);
}
pim_br->pmbr = br;
}
/*
* Remove the (S,G) from the stored values
*/
void
pim_br_clear_pmbr (struct prefix_sg *sg)
{
struct listnode *node, *next;
struct pim_br *pim_br;
for (ALL_LIST_ELEMENTS (pim_br_list, node, next, pim_br)) {
if (sg->src.s_addr == pim_br->sg.src.s_addr &&
sg->grp.s_addr == pim_br->sg.grp.s_addr)
break;
}
if (!pim_br)
return;
listnode_delete (pim_br_list, pim_br);
}
void pim_br_init (void)
{
pim_br_list = list_new();
if (!pim_br_list) {
zlog_err("%s: Failure to create pim_br_list",
__PRETTY_FUNCTION__);
return;
}
}
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