pimd/pim_br.c

   1 /*
   2  * PIM for Quagga
   3  * Copyright (C) 2015 Cumulus Networks, Inc.
   4  * Donald Sharp
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20 #include <zebra.h>
  21
  22 #include "memory.h"
  23 #include "log.h"
  24 #include "if.h"
  25
  26 #include "pimd.h"
  27 #include "pim_str.h"
  28 #include "pim_br.h"
  29 #include "linklist.h"
  30
  31 struct pim_br {
  32         pim_sgaddr sg;
  33         pim_addr pmbr;
  34 };
  35
  36 static struct list *pim_br_list = NULL;
  37
  38 pim_addr pim_br_get_pmbr(pim_sgaddr *sg)
  39 {
  40         struct listnode *node;
  41         struct pim_br *pim_br;
  42
  43         for (ALL_LIST_ELEMENTS_RO(pim_br_list, node, pim_br)) {
  44                 if (!pim_sgaddr_cmp(*sg, pim_br->sg))
  45                         return pim_br->pmbr;
  46         }
  47
  48         return PIMADDR_ANY;
  49 }
  50
  51 void pim_br_set_pmbr(pim_sgaddr *sg, pim_addr br)
  52 {
  53         struct listnode *node, *next;
  54         struct pim_br *pim_br;
  55
  56         for (ALL_LIST_ELEMENTS(pim_br_list, node, next, pim_br)) {
  57                 if (!pim_sgaddr_cmp(*sg, pim_br->sg))
  58                         break;
  59         }
  60
  61         if (!pim_br) {
  62                 pim_br = XCALLOC(MTYPE_PIM_BR, sizeof(*pim_br));
  63                 pim_br->sg = *sg;
  64
  65                 listnode_add(pim_br_list, pim_br);
  66         }
  67
  68         pim_br->pmbr = br;
  69 }
  70
  71 /*
  72  * Remove the (S,G) from the stored values
  73  */
  74 void pim_br_clear_pmbr(pim_sgaddr *sg)
  75 {
  76         struct listnode *node, *next;
  77         struct pim_br *pim_br;
  78
  79         for (ALL_LIST_ELEMENTS(pim_br_list, node, next, pim_br)) {
  80                 if (!pim_sgaddr_cmp(*sg, pim_br->sg))
  81                         break;
  82         }
  83
  84         if (!pim_br)
  85                 return;
  86
  87         listnode_delete(pim_br_list, pim_br);
  88 }
  89
  90 void pim_br_init(void)
  91 {
  92         pim_br_list = list_new();
  93 }