C++ (Cpp) ospf_area_range_match_any Examples

Example #1

File: ospf_ia.c Project: rgmabs19357/qpimd

static int
process_summary_lsa (struct ospf_area *area, struct route_table *rt,
		     struct route_table *rtrs, struct ospf_lsa *lsa)
{
  struct ospf *ospf = area->ospf;
  struct ospf_area_range *range;
  struct ospf_route *abr_or, *new_or;
  struct summary_lsa *sl;
  struct prefix_ipv4 p, abr;
  u_int32_t metric;

  if (lsa == NULL)
    return 0;

  sl = (struct summary_lsa *) lsa->data;

  if (IS_DEBUG_OSPF_EVENT)
    zlog_debug ("process_summary_lsa(): LS ID: %s", inet_ntoa (sl->header.id));

  metric = GET_METRIC (sl->metric);
   
  if (metric == OSPF_LS_INFINITY)
    return 0;

  if (IS_LSA_MAXAGE (lsa))
    return 0;

  if (ospf_lsa_is_self_originated (area->ospf, lsa))
    return 0;

  p.family = AF_INET;
  p.prefix = sl->header.id;
   
  if (sl->header.type == OSPF_SUMMARY_LSA)
    p.prefixlen = ip_masklen (sl->mask);
  else
    p.prefixlen = IPV4_MAX_BITLEN;
      
  apply_mask_ipv4 (&p);

  if (sl->header.type == OSPF_SUMMARY_LSA &&
      (range = ospf_area_range_match_any (ospf, &p)) &&
      ospf_area_range_active (range))
    return 0;

  /* XXX: This check seems dubious to me. If an ABR has already decided
   * to consider summaries received in this area, then why would one wish
   * to exclude default? 
   */
  if (IS_OSPF_ABR(ospf) && 
      ospf->abr_type != OSPF_ABR_STAND &&
      area->external_routing != OSPF_AREA_DEFAULT &&
      p.prefix.s_addr == OSPF_DEFAULT_DESTINATION &&
      p.prefixlen == 0)
    return 0; /* Ignore summary default from a stub area */

  abr.family = AF_INET;
  abr.prefix = sl->header.adv_router;
  abr.prefixlen = IPV4_MAX_BITLEN;
  apply_mask_ipv4 (&abr);

  abr_or = ospf_find_abr_route (rtrs, &abr, area);

  if (abr_or == NULL)
    return 0;

  new_or = ospf_route_new ();
  new_or->type = OSPF_DESTINATION_NETWORK;
  new_or->id = sl->header.id;
  new_or->mask = sl->mask;
  new_or->u.std.options = sl->header.options;
  new_or->u.std.origin = (struct lsa_header *) sl;
  new_or->cost = abr_or->cost + metric;
  new_or->u.std.area_id = area->area_id;
  new_or->u.std.external_routing = area->external_routing;
  new_or->path_type = OSPF_PATH_INTER_AREA;

  if (sl->header.type == OSPF_SUMMARY_LSA)
    ospf_ia_network_route (ospf, rt, &p, new_or, abr_or);
  else 
    {
      new_or->type = OSPF_DESTINATION_ROUTER;
      new_or->u.std.flags = ROUTER_LSA_EXTERNAL;
      ospf_ia_router_route (ospf, rtrs, &p, new_or, abr_or);
    }

  return 0;
}

Example #2

File: ospf_ia.c Project: antonywcl/AR-5315u_PLD

int
process_summary_lsa (struct ospf_lsa *l, void *v, int i)
{
  struct ospf_area_range *range;
  struct ospf_route *abr_or, *new_or;
  struct summary_lsa *sl;
  struct prefix_ipv4 p, abr;
  u_int32_t metric;
  struct ia_args *args;

  if (l == NULL)
    return 0;

  args = (struct ia_args *) v;
  sl = (struct summary_lsa *) l->data;

  if (IS_DEBUG_OSPF_EVENT)
    zlog_info ("process_summary_lsa(): LS ID: %s", inet_ntoa (sl->header.id));

  metric = GET_METRIC (sl->metric);
   
  if (metric == OSPF_LS_INFINITY)
    return 0;

  if (IS_LSA_MAXAGE (l))
    return 0;

  if (ospf_lsa_is_self_originated (l))
    return 0;

  p.family = AF_INET;
  p.prefix = sl->header.id;
   
  if (sl->header.type == OSPF_SUMMARY_LSA)
    p.prefixlen = ip_masklen (sl->mask);
  else
    p.prefixlen = IPV4_MAX_BITLEN;
      
  apply_mask_ipv4 (&p);

  if (sl->header.type == OSPF_SUMMARY_LSA &&
      (range = ospf_area_range_match_any (ospf_top, &p)) &&
      ospf_area_range_active (range))
    return 0;

  if (ospf_top->abr_type != OSPF_ABR_STAND &&
      args->area->external_routing != OSPF_AREA_DEFAULT &&
      p.prefix.s_addr == OSPF_DEFAULT_DESTINATION &&
      p.prefixlen == 0)
    return 0; /* Ignore summary default from a stub area */

  abr.family = AF_INET;
  abr.prefix = sl->header.adv_router;
  abr.prefixlen = IPV4_MAX_BITLEN;
  apply_mask_ipv4 (&abr);

  abr_or = ospf_find_abr_route (args->rtrs, &abr, args->area);

  if (abr_or == NULL)
    return 0;

  new_or = ospf_route_new ();
  new_or->type = OSPF_DESTINATION_NETWORK;
  new_or->id = sl->header.id;
  new_or->mask = sl->mask;
  new_or->u.std.options = sl->header.options;
  new_or->u.std.origin = (struct lsa_header *) sl;
  new_or->cost = abr_or->cost + metric;
  new_or->u.std.area_id = args->area->area_id;
#ifdef HAVE_NSSA
  new_or->u.std.external_routing = args->area->external_routing;
#endif /* HAVE_NSSA */
  new_or->path_type = OSPF_PATH_INTER_AREA;

  if (sl->header.type == OSPF_SUMMARY_LSA)
    ospf_ia_network_route (args->rt, &p, new_or, abr_or);
  else 
    {
      new_or->type = OSPF_DESTINATION_ROUTER;
      new_or->u.std.flags = ROUTER_LSA_EXTERNAL;
      ospf_ia_router_route (args->rtrs, &p, new_or, abr_or);
    }

  return 0;
}