pimd: Remove unneeded shell scripts

[mirror_frr.git] / pimd / pim_br.c

/*
 * 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 "pimd.h"
#include "pim_str.h"
#include "pim_br.h"
#include "linklist.h"

struct pim_br {
  struct in_addr source;
  struct in_addr group;
  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 in_addr source, struct in_addr group)
{
  struct listnode *node;
  struct pim_br   *pim_br;

  for (ALL_LIST_ELEMENTS_RO (pim_br_list, node, pim_br)) {
    if (source.s_addr == pim_br->source.s_addr &&
	group.s_addr == pim_br->group.s_addr)
      return pim_br->pmbr;
  }

  return pim_br_unknown;
}

void
pim_br_set_pmbr (struct in_addr source, struct in_addr group, 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 (source.s_addr == pim_br->source.s_addr &&
	group.s_addr == pim_br->group.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->source = source;
    pim_br->group = group;

    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 in_addr source, struct in_addr group)
{
  struct listnode *node, *next;
  struct pim_br *pim_br;

  for (ALL_LIST_ELEMENTS (pim_br_list, node, next, pim_br)) {
    if (source.s_addr == pim_br->source.s_addr &&
	group.s_addr == pim_br->group.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;
  }
}