ospf6d.c

大名鼎鼎的路由器源码。程序分ZEBRA、OSPFRIP等3个包。程序框架采用一个路由协议一个进程的方式

       )
{
  if (IS_OSPF6_DUMP_CONFIG)
    zlog_info ("CONFIG: interface %s area %s prefix-list %s",
               argv[0], argv[1], argv[2]);

  return ospf6_interface_bind_area (vty, argv[0], argv[1], argv[2], 0);
}

DEFUN (ospf6_interface_area_plist_passive,
       ospf6_interface_area_plist_passive_cmd,
       "interface IFNAME area A.B.C.D prefix-list WORD passive",
       "Enable routing on an IPv6 interface\n"
       IFNAME_STR
       "Set the OSPF6 area ID\n"
       "OSPF6 area ID in IPv4 address notation\n"
       OSPF6_PREFIX_LIST_STR
       "IPv6 prefix-list name\n"
       "IPv6 prefix-list name\n"
       OSPF6_PASSIVE_STR
       )
{
  if (IS_OSPF6_DUMP_CONFIG)
    zlog_info ("CONFIG: interface %s area %s prefix-list %s passive",
               argv[0], argv[1], argv[2]);

  return ospf6_interface_bind_area (vty, argv[0], argv[1], argv[2], 1);
}

DEFUN (ospf6_interface_area,
       ospf6_interface_area_cmd,
       "interface IFNAME area A.B.C.D",
       "Enable routing on an IPv6 interface\n"
       IFNAME_STR
       "Set the OSPF6 area ID\n"
       "OSPF6 area ID in IPv4 address notation\n"
       )
{
  struct interface *ifp;
  struct ospf6_interface *o6i;
  int passive;
  char *plist_name;

  if (IS_OSPF6_DUMP_CONFIG)
    zlog_info ("CONFIG: interface %s area %s",
               argv[0], argv[1]);

  ifp = if_get_by_name (argv[0]);
  o6i = (struct ospf6_interface *) ifp->info;
  if (o6i)
    {
      passive = CHECK_FLAG (o6i->flag, OSPF6_INTERFACE_FLAG_PASSIVE);
      plist_name = o6i->plist_name;
    }
  else
    {
      passive = 0;
      plist_name = NULL;
    }

  return ospf6_interface_bind_area (vty, argv[0], argv[1],
                                    plist_name, passive);
}

DEFUN (ospf6_interface_area_passive,
       ospf6_interface_area_passive_cmd,
       "interface IFNAME area A.B.C.D passive",
       "Enable routing on an IPv6 interface\n"
       IFNAME_STR
       "Set the OSPF6 area ID\n"
       "OSPF6 area ID in IPv4 address notation\n"
       OSPF6_PASSIVE_STR
       )
{
  if (IS_OSPF6_DUMP_CONFIG)
    zlog_info ("CONFIG: interface %s area %s passive",
               argv[0], argv[1]);

  return ospf6_interface_bind_area (vty, argv[0], argv[1], NULL, 1);
}

DEFUN (no_ospf6_interface_area,
       no_ospf6_interface_area_cmd,
       "no interface IFNAME area A.B.C.D",
       NO_STR
       "Disable routing on an IPv6 interface\n"
       IFNAME_STR)
{
  struct interface *ifp;
  struct ospf6_interface *o6i;
  struct ospf6 *o6;
  u_int32_t area_id;

  o6 = (struct ospf6 *) vty->index;

  ifp = if_lookup_by_name (argv[0]);
  if (!ifp)
    return CMD_ERR_NO_MATCH;

  o6i = (struct ospf6_interface *) ifp->info;
  if (!o6i)
    return CMD_SUCCESS;

  /* parse Area-ID */
  if (inet_pton (AF_INET, argv[1], &area_id) != 1)
    {
      vty_out (vty, "Invalid Area-ID: %s%s", argv[1], VTY_NEWLINE);
      return CMD_ERR_AMBIGUOUS;
    }

  if (o6i->area->area_id != area_id)
    {
      vty_out (vty, "Wrong Area-ID: %s aready attached to area %s%s",
               o6i->interface->name, o6i->area->str, VTY_NEWLINE);
      return CMD_ERR_NOTHING_TODO;
    }

  if (o6i->area)
    thread_execute (master, interface_down, o6i, 0);

  listnode_delete (o6i->area->if_list, o6i);
  o6i->area = (struct ospf6_area *) NULL;

  return CMD_SUCCESS;
}

DEFUN (ospf6_area_range,
       ospf6_area_range_cmd,
       "area A.B.C.D range X:X::X:X/M",
       "OSPFv3 area parameters\n"
       "OSPFv3 area ID in IPv4 address format\n"
       "Summarize routes matching address/mask (border routers only)\n"
       "IPv6 address range\n")
{
  struct ospf6 *o6;
  struct ospf6_area *o6a;
  u_int32_t area_id;
  int ret;

  o6 = (struct ospf6 *) vty->index;
  inet_pton (AF_INET, argv[0], &area_id);
  o6a = ospf6_area_lookup (area_id, o6);
  if (! o6a)
    {
      vty_out (vty, "No such area%s", VTY_NEWLINE);
      return CMD_ERR_NO_MATCH;
    }

  ret = str2prefix_ipv6 (argv[1], &o6a->area_range);
  if (ret <= 0)
    {
      vty_out (vty, "Malformed IPv6 address%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  return CMD_SUCCESS;
}

DEFUN (ospf6_passive_interface,
       ospf6_passive_interface_cmd,
       "passive-interface IFNAME",
       OSPF6_PASSIVE_STR
       IFNAME_STR)
{
  struct interface *ifp;
  struct ospf6_interface *o6i;

  ifp = if_get_by_name (argv[0]);
  if (ifp->info)
    o6i = (struct ospf6_interface *) ifp->info;
  else
    o6i = ospf6_interface_create (ifp);

  SET_FLAG (o6i->flag, OSPF6_INTERFACE_FLAG_PASSIVE);

  if (o6i->thread_send_hello)
    {
      thread_cancel (o6i->thread_send_hello);
      o6i->thread_send_hello = (struct thread *) NULL;
    }

  return CMD_SUCCESS;
}

DEFUN (no_ospf6_passive_interface,
       no_ospf6_passive_interface_cmd,
       "no passive-interface IFNAME",
       NO_STR
       OSPF6_PASSIVE_STR
       IFNAME_STR)
{
  struct interface *ifp;
  struct ospf6_interface *o6i;

  ifp = if_lookup_by_name (argv[0]);
  if (! ifp)
    return CMD_ERR_NO_MATCH;

  o6i = (struct ospf6_interface *) ifp->info;
  UNSET_FLAG (o6i->flag, OSPF6_INTERFACE_FLAG_PASSIVE);
  if (o6i->thread_send_hello == NULL)
    thread_add_event (master, ospf6_send_hello, o6i, 0);

  return CMD_SUCCESS;
}

#ifdef HAVE_SETPROCTITLE
extern int _argc;
extern char **_argv;

DEFUN (set_proctitle,
       set_proctitle_cmd,
       "set proctitle (version|normal|none)",
       "Set command\n"
       "Process title\n"
       "Version information\n"
       "Normal command-line options\n"
       "Just program name\n")
{
  int i;
  char buf[64], tmp[64];

  if (strncmp (argv[0], "v", 1) == 0)
    {
      proctitle_mode = 1;
      setproctitle ("%s Zebra: %s", OSPF6_DAEMON_VERSION, ZEBRA_VERSION);
    }
  else if (strncmp (argv[0], "nor", 3) == 0)
    {
      proctitle_mode = 0;
      memset (tmp, 0, sizeof (tmp));
      memset (buf, 0, sizeof (buf));
      for (i = 0; i < _argc; i++)
        {
          snprintf (buf, sizeof (buf), "%s%s ", tmp, _argv[i]);
          memcpy (&tmp, &buf, sizeof (tmp));
        }
      setproctitle (buf);
    }
  else if (strncmp (argv[0], "non", 3) == 0)
    {
      proctitle_mode = -1;
      setproctitle (NULL);
    }
  else
    return CMD_ERR_NO_MATCH;

  return CMD_SUCCESS;
}
#endif /* HAVE_SETPROCTITLE */

/* OSPF configuration write function. */
int
ospf6_config_write (struct vty *vty)
{
  listnode j, k;
  char buf[64];
  struct ospf6_area *area;
  struct ospf6_interface *o6i;

  if (proctitle_mode == 1)
    vty_out (vty, "set proctitle version%s", VTY_NEWLINE);
  else if (proctitle_mode == -1)
    vty_out (vty, "set proctitle none%s", VTY_NEWLINE);

  vty_out (vty, "!%s", VTY_NEWLINE);

  if (! ospf6)
    return 0;

  /* OSPFv6 configuration. */
  if (!ospf6)
    return CMD_SUCCESS;

  inet_ntop (AF_INET, &ospf6->router_id, buf, sizeof (buf));
  vty_out (vty, "router ospf6%s", VTY_NEWLINE);
  vty_out (vty, " router-id %s%s", buf, VTY_NEWLINE);

  ospf6_redistribute_config_write (vty);
  ospf6_damp_config_write (vty);

  for (j = listhead (ospf6->area_list); j; nextnode (j))
    {
      area = (struct ospf6_area *)getdata (j);
      for (k = listhead (area->if_list); k; nextnode (k))
        {
          o6i = (struct ospf6_interface *) getdata (k);
          vty_out (vty, " interface %s area %s%s",
                   o6i->interface->name, area->str, VTY_NEWLINE);
        }
    }
  vty_out (vty, "!%s", VTY_NEWLINE);
  return 0;
}

/* OSPF6 node structure. */
struct cmd_node ospf6_node =
  {
    OSPF6_NODE,
    "%s(config-ospf6)# ",
    1
  };

/* Install ospf related commands. */
void
ospf6_init ()
{
  /* Install ospf6 top node. */
  install_node (&ospf6_node, ospf6_config_write);

  install_element (VIEW_NODE, &show_ipv6_ospf6_cmd);
  install_element (VIEW_NODE, &show_version_ospf6_cmd);
  install_element (ENABLE_NODE, &show_ipv6_ospf6_cmd);
  install_element (ENABLE_NODE, &show_version_ospf6_cmd);
  install_element (ENABLE_NODE, &reload_cmd);
  install_element (CONFIG_NODE, &router_ospf6_cmd);
  install_element (CONFIG_NODE, &interface_cmd);
#ifdef OSPF6_STATISTICS
  install_element (VIEW_NODE, &show_ipv6_ospf6_statistics_cmd);
  install_element (ENABLE_NODE, &show_ipv6_ospf6_statistics_cmd);
#endif /* OSPF6_STATISTICS */
#ifdef OSPF6_GARBAGE_COLLECT
  install_element (ENABLE_NODE, &garbage_collection_cmd);
#endif /* OSPF6_GARBAGE_COLLECT */
#ifdef HAVE_SETPROCTITLE
  install_element (CONFIG_NODE, &set_proctitle_cmd);
#endif /* HAVE_SETPROCTITLE */

  install_default (OSPF6_NODE);
  install_element (OSPF6_NODE, &ospf6_router_id_cmd);
  install_element (OSPF6_NODE, &ospf6_interface_area_cmd);
  install_element (OSPF6_NODE, &ospf6_interface_area_passive_cmd);
  install_element (OSPF6_NODE, &ospf6_interface_area_plist_cmd);
  install_element (OSPF6_NODE, &ospf6_interface_area_plist_passive_cmd);
  install_element (OSPF6_NODE, &no_ospf6_interface_area_cmd);
  install_element (OSPF6_NODE, &ospf6_passive_interface_cmd);
  install_element (OSPF6_NODE, &no_ospf6_passive_interface_cmd);
  install_element (OSPF6_NODE, &ospf6_area_range_cmd);

  /* Make empty list of top list. */
  if_init ();

  /* Install access list */
  access_list_init ();

  /* Install prefix list */
  prefix_list_init ();

  ospf6_dump_init ();

#ifdef HAVE_OSPF6_DAMP
  ospf6_damp_init ();
#endif /*HAVE_OSPF6_DAMP*/

  ospf6_hook_init ();
  ospf6_lsa_init ();

  ospf6_top_init ();
  ospf6_area_init ();
  ospf6_interface_init ();
  ospf6_neighbor_init ();
  ospf6_zebra_init ();

  ospf6_routemap_init ();
  ospf6_lsdb_init ();

  ospf6_spf_init ();

  ospf6_intra_init ();
  ospf6_abr_init ();
  ospf6_asbr_init ();
}

void
ospf6_terminate ()
{
  /* stop ospf6 */
  ospf6_stop ();

  /* log */
  zlog (NULL, LOG_INFO, "OSPF6d terminated");
}

void
ospf6_maxage_remover ()
{
#if 0
  if (IS_OSPF6_DUMP_LSDB)
    zlog_info ("MaxAge Remover");
#endif

  ospf6_top_schedule_maxage_remover (NULL, 0, ospf6);
  (*ospf6->foreach_area) (ospf6, NULL, 0,
                          ospf6_area_schedule_maxage_remover);
  (*ospf6->foreach_if) (ospf6, NULL, 0,
                        ospf6_interface_schedule_maxage_remover);
}



void *
ospf6_lsa_get_scope (u_int16_t type, struct ospf6_interface *o6i)
{
  if (OSPF6_LSA_IS_SCOPE_LINKLOCAL (ntohs (type)))
    return o6i;
  else if (OSPF6_LSA_IS_SCOPE_AREA (ntohs (type)))
    return o6i->area;
  else if (OSPF6_LSA_IS_SCOPE_AS (ntohs (type)))
    return o6i->area->ospf6;
  else
    return NULL;
}