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113 lines
2.6 KiB
C
113 lines
2.6 KiB
C
/*
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* PIM for Quagga
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* Copyright (C) 2015 Cumulus Networks, Inc.
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* Donald Sharp
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#include <zebra.h>
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#include "memory.h"
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#include "log.h"
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#include "if.h"
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#include "pimd.h"
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#include "pim_str.h"
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#include "pim_br.h"
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#include "linklist.h"
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struct pim_br {
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struct prefix sg;
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struct in_addr pmbr;
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};
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struct in_addr pim_br_unknown = { .s_addr = 0 };
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static struct list *pim_br_list = NULL;
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struct in_addr
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pim_br_get_pmbr (struct prefix *sg)
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{
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struct listnode *node;
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struct pim_br *pim_br;
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for (ALL_LIST_ELEMENTS_RO (pim_br_list, node, pim_br)) {
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if (sg->u.sg.src.s_addr == pim_br->sg.u.sg.src.s_addr &&
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sg->u.sg.grp.s_addr == pim_br->sg.u.sg.grp.s_addr)
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return pim_br->pmbr;
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}
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return pim_br_unknown;
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}
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void
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pim_br_set_pmbr (struct prefix *sg, struct in_addr br)
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{
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struct listnode *node, *next;
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struct pim_br *pim_br;
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for (ALL_LIST_ELEMENTS (pim_br_list, node, next, pim_br)) {
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if (sg->u.sg.src.s_addr == pim_br->sg.u.sg.src.s_addr &&
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sg->u.sg.grp.s_addr == pim_br->sg.u.sg.grp.s_addr)
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break;
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}
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if (!pim_br) {
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pim_br = XCALLOC(MTYPE_PIM_BR, sizeof (*pim_br));
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if (!pim_br) {
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zlog_err("PIM XCALLOC(%zu) failure", sizeof(*pim_br));
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return;
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}
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pim_br->sg = *sg;
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listnode_add(pim_br_list, pim_br);
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}
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pim_br->pmbr = br;
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}
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/*
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* Remove the (S,G) from the stored values
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*/
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void
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pim_br_clear_pmbr (struct prefix *sg)
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{
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struct listnode *node, *next;
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struct pim_br *pim_br;
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for (ALL_LIST_ELEMENTS (pim_br_list, node, next, pim_br)) {
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if (sg->u.sg.src.s_addr == pim_br->sg.u.sg.src.s_addr &&
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sg->u.sg.grp.s_addr == pim_br->sg.u.sg.grp.s_addr)
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break;
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}
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if (!pim_br)
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return;
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listnode_delete (pim_br_list, pim_br);
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}
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void pim_br_init (void)
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{
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pim_br_list = list_new();
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if (!pim_br_list) {
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zlog_err("%s: Failure to create pim_br_list",
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__PRETTY_FUNCTION__);
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return;
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}
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}
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