isisd/isis_circuit.c

   1 /*
   2  * IS-IS Rout(e)ing protocol - isis_circuit.h
   3  *
   4  * Copyright (C) 2001,2002   Sampo Saaristo
   5  *                           Tampere University of Technology
   6  *                           Institute of Communications Engineering
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public Licenseas published by the Free
  10  * Software Foundation; either version 2 of the License, or (at your option)
  11  * any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * more details.
  17
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21  */
  22 #include <zebra.h>
  23 #ifdef GNU_LINUX
  24 #include <net/ethernet.h>
  25 #else
  26 #include <netinet/if_ether.h>
  27 #endif
  28
  29 #ifndef ETHER_ADDR_LEN
  30 #define ETHER_ADDR_LEN  ETHERADDRL
  31 #endif
  32
  33 #include "log.h"
  34 #include "memory.h"
  35 #include "if.h"
  36 #include "linklist.h"
  37 #include "command.h"
  38 #include "thread.h"
  39 #include "hash.h"
  40 #include "prefix.h"
  41 #include "stream.h"
  42
  43 #include "isisd/dict.h"
  44 #include "isisd/include-netbsd/iso.h"
  45 #include "isisd/isis_constants.h"
  46 #include "isisd/isis_common.h"
  47 #include "isisd/isis_circuit.h"
  48 #include "isisd/isis_tlv.h"
  49 #include "isisd/isis_lsp.h"
  50 #include "isisd/isis_pdu.h"
  51 #include "isisd/isis_network.h"
  52 #include "isisd/isis_misc.h"
  53 #include "isisd/isis_constants.h"
  54 #include "isisd/isis_adjacency.h"
  55 #include "isisd/isis_dr.h"
  56 #include "isisd/isis_flags.h"
  57 #include "isisd/isisd.h"
  58 #include "isisd/isis_csm.h"
  59 #include "isisd/isis_events.h"
  60
  61 extern struct thread_master *master;
  62 extern struct isis *isis;
  63
  64 /*
  65  * Prototypes.
  66  */
  67 void isis_circuit_down(struct isis_circuit *);
  68 int isis_interface_config_write(struct vty *);
  69 int isis_if_new_hook(struct interface *);
  70 int isis_if_delete_hook(struct interface *);
  71
  72 struct isis_circuit *
  73 isis_circuit_new ()
  74 {
  75   struct isis_circuit *circuit;
  76   int i;
  77
  78   circuit = XCALLOC (MTYPE_ISIS_CIRCUIT, sizeof (struct isis_circuit));
  79   if (circuit)
  80     {
  81       /* set default metrics for circuit */
  82       for (i = 0; i < 2; i++)
  83         {
  84           circuit->metrics[i].metric_default = DEFAULT_CIRCUIT_METRICS;
  85           circuit->metrics[i].metric_expense = METRICS_UNSUPPORTED;
  86           circuit->metrics[i].metric_error = METRICS_UNSUPPORTED;
  87           circuit->metrics[i].metric_delay = METRICS_UNSUPPORTED;
  88           circuit->te_metric[i] = DEFAULT_CIRCUIT_METRICS;
  89         }
  90     }
  91   else
  92     {
  93       zlog_err ("Can't malloc isis circuit");
  94       return NULL;
  95     }
  96
  97   return circuit;
  98 }
  99
 100 void
 101 isis_circuit_configure (struct isis_circuit *circuit, struct isis_area *area)
 102 {
 103   int i;
 104   circuit->area = area;
 105   /*
 106    * The level for the circuit is same as for the area, unless configured
 107    * otherwise.
 108    */
 109   circuit->circuit_is_type = area->is_type;
 110   /*
 111    * Default values
 112    */
 113   for (i = 0; i < 2; i++)
 114     {
 115       circuit->hello_interval[i] = HELLO_INTERVAL;
 116       circuit->hello_multiplier[i] = HELLO_MULTIPLIER;
 117       circuit->csnp_interval[i] = CSNP_INTERVAL;
 118       circuit->psnp_interval[i] = PSNP_INTERVAL;
 119       circuit->u.bc.priority[i] = DEFAULT_PRIORITY;
 120     }
 121   if (circuit->circ_type == CIRCUIT_T_BROADCAST)
 122     {
 123       circuit->u.bc.adjdb[0] = list_new ();
 124       circuit->u.bc.adjdb[1] = list_new ();
 125       circuit->u.bc.pad_hellos = 1;
 126     }
 127   circuit->lsp_interval = LSP_INTERVAL;
 128
 129   /*
 130    * Add the circuit into area
 131    */
 132   listnode_add (area->circuit_list, circuit);
 133
 134   circuit->idx = flags_get_index (&area->flags);
 135   circuit->lsp_queue = list_new ();
 136
 137   return;
 138 }
 139
 140 void
 141 isis_circuit_deconfigure (struct isis_circuit *circuit,
 142                           struct isis_area *area)
 143 {
 144
 145   /* Remove circuit from area */
 146   listnode_delete (area->circuit_list, circuit);
 147   /* Free the index of SRM and SSN flags */
 148   flags_free_index (&area->flags, circuit->idx);
 149
 150   return;
 151 }
 152
 153 struct isis_circuit *
 154 circuit_lookup_by_ifp (struct interface *ifp, struct list *list)
 155 {
 156   struct isis_circuit *circuit = NULL;
 157   struct listnode *node;
 158
 159   if (!list)
 160     return NULL;
 161
 162   for (ALL_LIST_ELEMENTS_RO (list, node, circuit))
 163     if (circuit->interface == ifp)
 164       return circuit;
 165
 166   return NULL;
 167 }
 168
 169 struct isis_circuit *
 170 circuit_scan_by_ifp (struct interface *ifp)
 171 {
 172   struct isis_area *area;
 173   struct listnode *node;
 174   struct isis_circuit *circuit;
 175
 176   if (!isis->area_list)
 177     return NULL;
 178
 179   for (ALL_LIST_ELEMENTS_RO (isis->area_list, node, area))
 180     {
 181       circuit = circuit_lookup_by_ifp (ifp, area->circuit_list);
 182       if (circuit)
 183         return circuit;
 184     }
 185
 186   return circuit_lookup_by_ifp (ifp, isis->init_circ_list);
 187 }
 188
 189 void
 190 isis_circuit_del (struct isis_circuit *circuit)
 191 {
 192
 193   if (!circuit)
 194     return;
 195
 196   if (circuit->circ_type == CIRCUIT_T_BROADCAST)
 197     {
 198       /* destroy adjacency databases */
 199       if (circuit->u.bc.adjdb[0])
 200         list_delete (circuit->u.bc.adjdb[0]);
 201       if (circuit->u.bc.adjdb[1])
 202         list_delete (circuit->u.bc.adjdb[1]);
 203       /* destroy neighbour lists */
 204       if (circuit->u.bc.lan_neighs[0])
 205         list_delete (circuit->u.bc.lan_neighs[0]);
 206       if (circuit->u.bc.lan_neighs[1])
 207         list_delete (circuit->u.bc.lan_neighs[1]);
 208       /* destroy addresses */
 209     }
 210   if (circuit->ip_addrs)
 211     list_delete (circuit->ip_addrs);
 212 #ifdef HAVE_IPV6
 213   if (circuit->ipv6_link)
 214     list_delete (circuit->ipv6_link);
 215   if (circuit->ipv6_non_link)
 216     list_delete (circuit->ipv6_non_link);
 217 #endif /* HAVE_IPV6 */
 218
 219   /* and lastly the circuit itself */
 220   XFREE (MTYPE_ISIS_CIRCUIT, circuit);
 221
 222   return;
 223 }
 224
 225 void
 226 isis_circuit_add_addr (struct isis_circuit *circuit,
 227                        struct connected *connected)
 228 {
 229   struct prefix_ipv4 *ipv4;
 230   u_char buf[BUFSIZ];
 231 #ifdef HAVE_IPV6
 232   struct prefix_ipv6 *ipv6;
 233 #endif /* HAVE_IPV6 */
 234
 235   if (!circuit->ip_addrs)
 236     circuit->ip_addrs = list_new ();
 237 #ifdef HAVE_IPV6
 238   if (!circuit->ipv6_link)
 239     circuit->ipv6_link = list_new ();
 240   if (!circuit->ipv6_non_link)
 241     circuit->ipv6_non_link = list_new ();
 242 #endif /* HAVE_IPV6 */
 243
 244   memset (&buf, 0, BUFSIZ);
 245   if (connected->address->family == AF_INET)
 246     {
 247       ipv4 = prefix_ipv4_new ();
 248       ipv4->prefixlen = connected->address->prefixlen;
 249       ipv4->prefix = connected->address->u.prefix4;
 250       listnode_add (circuit->ip_addrs, ipv4);
 251       if (circuit->area)
 252         lsp_regenerate_schedule (circuit->area);
 253
 254 #ifdef EXTREME_DEBUG
 255       prefix2str (connected->address, buf, BUFSIZ);
 256       zlog_debug ("Added IP address %s to circuit %d", buf,
 257                  circuit->circuit_id);
 258 #endif /* EXTREME_DEBUG */
 259     }
 260 #ifdef HAVE_IPV6
 261   if (connected->address->family == AF_INET6)
 262     {
 263       ipv6 = prefix_ipv6_new ();
 264       ipv6->prefixlen = connected->address->prefixlen;
 265       ipv6->prefix = connected->address->u.prefix6;
 266
 267       if (IN6_IS_ADDR_LINKLOCAL (&ipv6->prefix))
 268         listnode_add (circuit->ipv6_link, ipv6);
 269       else
 270         listnode_add (circuit->ipv6_non_link, ipv6);
 271       if (circuit->area)
 272         lsp_regenerate_schedule (circuit->area);
 273
 274 #ifdef EXTREME_DEBUG
 275       prefix2str (connected->address, buf, BUFSIZ);
 276       zlog_debug ("Added IPv6 address %s to circuit %d", buf,
 277                  circuit->circuit_id);
 278 #endif /* EXTREME_DEBUG */
 279     }
 280 #endif /* HAVE_IPV6 */
 281   return;
 282 }
 283
 284 void
 285 isis_circuit_del_addr (struct isis_circuit *circuit,
 286                        struct connected *connected)
 287 {
 288   struct prefix_ipv4 *ipv4, *ip = NULL;
 289   struct listnode *node;
 290   u_char buf[BUFSIZ];
 291 #ifdef HAVE_IPV6
 292   struct prefix_ipv6 *ipv6, *ip6 = NULL;
 293   int found = 0;
 294 #endif /* HAVE_IPV6 */
 295
 296   memset (&buf, 0, BUFSIZ);
 297   if (connected->address->family == AF_INET)
 298     {
 299       ipv4 = prefix_ipv4_new ();
 300       ipv4->prefixlen = connected->address->prefixlen;
 301       ipv4->prefix = connected->address->u.prefix4;
 302
 303       for (ALL_LIST_ELEMENTS_RO (circuit->ip_addrs, node, ip))
 304         if (prefix_same ((struct prefix *) ip, (struct prefix *) &ipv4))
 305           break;
 306
 307       if (ip)
 308         {
 309           listnode_delete (circuit->ip_addrs, ip);
 310           if (circuit->area)
 311             lsp_regenerate_schedule (circuit->area);
 312         }
 313       else
 314         {
 315           prefix2str (connected->address, (char *)buf, BUFSIZ);
 316           zlog_warn("Nonexitant ip address %s removal attempt from circuit \
 317                      %d", buf, circuit->circuit_id);
 318         }
 319     }
 320 #ifdef HAVE_IPV6
 321   if (connected->address->family == AF_INET6)
 322     {
 323       ipv6 = prefix_ipv6_new ();
 324       ipv6->prefixlen = connected->address->prefixlen;
 325       ipv6->prefix = connected->address->u.prefix6;
 326
 327       if (IN6_IS_ADDR_LINKLOCAL (&ipv6->prefix))
 328         {
 329           for (ALL_LIST_ELEMENTS_RO (circuit->ipv6_link, node, ip6))
 330             {
 331               if (prefix_same ((struct prefix *) ip6, (struct prefix *) ipv6))
 332                 break;
 333             }
 334           if (ip6)
 335             {
 336               listnode_delete (circuit->ipv6_link, ip6);
 337               found = 1;
 338             }
 339         }
 340       else
 341         {
 342           for (ALL_LIST_ELEMENTS_RO (circuit->ipv6_non_link, node, ip6))
 343             {
 344               if (prefix_same ((struct prefix *) ip6, (struct prefix *) ipv6))
 345                 break;
 346             }
 347           if (ip6)
 348             {
 349               listnode_delete (circuit->ipv6_non_link, ip6);
 350               found = 1;
 351             }
 352         }
 353
 354       if (!found)
 355         {
 356           prefix2str (connected->address, (char *)buf, BUFSIZ);
 357           zlog_warn("Nonexitant ip address %s removal attempt from \
 358                      circuit %d", buf, circuit->circuit_id);
 359         }
 360       else
 361         if (circuit->area)
 362           lsp_regenerate_schedule (circuit->area);
 363     }
 364 #endif /* HAVE_IPV6 */
 365   return;
 366 }
 367
 368 void
 369 isis_circuit_if_add (struct isis_circuit *circuit, struct interface *ifp)
 370 {
 371   struct listnode *node, *nnode;
 372   struct connected *conn;
 373
 374   circuit->interface = ifp;
 375   ifp->info = circuit;
 376
 377   circuit->circuit_id = ifp->ifindex % 255;     /* FIXME: Why not ? */
 378
 379   /*  isis_circuit_update_addrs (circuit, ifp); */
 380
 381   if (if_is_broadcast (ifp))
 382     {
 383       circuit->circ_type = CIRCUIT_T_BROADCAST;
 384       /*
 385        * Get the Hardware Address
 386        */
 387 #ifdef HAVE_STRUCT_SOCKADDR_DL
 388 #ifndef SUNOS_5
 389       if (circuit->interface->sdl.sdl_alen != ETHER_ADDR_LEN)
 390         zlog_warn ("unsupported link layer");
 391       else
 392         memcpy (circuit->u.bc.snpa, LLADDR (&circuit->interface->sdl),
 393                 ETH_ALEN);
 394 #endif
 395 #else
 396       if (circuit->interface->hw_addr_len != ETH_ALEN)
 397         {
 398           zlog_warn ("unsupported link layer");
 399         }
 400       else
 401         {
 402           memcpy (circuit->u.bc.snpa, circuit->interface->hw_addr, ETH_ALEN);
 403         }
 404 #ifdef EXTREME_DEGUG
 405       zlog_debug ("isis_circuit_if_add: if_id %d, isomtu %d snpa %s",
 406                  circuit->interface->ifindex, ISO_MTU (circuit),
 407                  snpa_print (circuit->u.bc.snpa));
 408
 409 #endif /* EXTREME_DEBUG */
 410 #endif /* HAVE_STRUCT_SOCKADDR_DL */
 411     }
 412   else if (if_is_pointopoint (ifp))
 413     {
 414       circuit->circ_type = CIRCUIT_T_P2P;
 415     }
 416   else
 417     {
 418       /* It's normal in case of loopback etc. */
 419       if (isis->debugs & DEBUG_EVENTS)
 420         zlog_debug ("isis_circuit_if_add: unsupported media");
 421     }
 422
 423   for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, conn))
 424     isis_circuit_add_addr (circuit, conn);
 425
 426   return;
 427 }
 428
 429 void
 430 isis_circuit_update_params (struct isis_circuit *circuit,
 431                             struct interface *ifp)
 432 {
 433   assert (circuit);
 434
 435   if (circuit->circuit_id != ifp->ifindex)
 436     {
 437       zlog_warn ("changing circuit_id %d->%d", circuit->circuit_id,
 438                  ifp->ifindex);
 439       circuit->circuit_id = ifp->ifindex % 255;
 440     }
 441
 442   /* FIXME: Why is this needed? shouldn't we compare to the area's mtu */
 443   /* Ofer, this was here in case someone changes the mtu (e.g. with ifconfig)
 444      The areas MTU is the minimum of mtu's of circuits in the area
 445      now we can't catch the change
 446      if (circuit->mtu != ifp->mtu) {
 447      zlog_warn ("changing circuit mtu %d->%d", circuit->mtu,
 448      ifp->mtu);
 449      circuit->mtu = ifp->mtu;
 450      }
 451    */
 452   /*
 453    * Get the Hardware Address
 454    */
 455 #ifdef HAVE_STRUCT_SOCKADDR_DL
 456 #ifndef SUNOS_5
 457   if (circuit->interface->sdl.sdl_alen != ETHER_ADDR_LEN)
 458     zlog_warn ("unsupported link layer");
 459   else
 460     memcpy (circuit->u.bc.snpa, LLADDR (&circuit->interface->sdl), ETH_ALEN);
 461 #endif
 462 #else
 463   if (circuit->interface->hw_addr_len != ETH_ALEN)
 464     {
 465       zlog_warn ("unsupported link layer");
 466     }
 467   else
 468     {
 469       if (memcmp (circuit->u.bc.snpa, circuit->interface->hw_addr, ETH_ALEN))
 470         {
 471           zlog_warn ("changing circuit snpa %s->%s",
 472                      snpa_print (circuit->u.bc.snpa),
 473                      snpa_print (circuit->interface->hw_addr));
 474         }
 475     }
 476 #endif
 477
 478   if (if_is_broadcast (ifp))
 479     {
 480       circuit->circ_type = CIRCUIT_T_BROADCAST;
 481     }
 482   else if (if_is_pointopoint (ifp))
 483     {
 484       circuit->circ_type = CIRCUIT_T_P2P;
 485     }
 486   else
 487     {
 488       zlog_warn ("isis_circuit_update_params: unsupported media");
 489     }
 490
 491   return;
 492 }
 493
 494 void
 495 isis_circuit_if_del (struct isis_circuit *circuit)
 496 {
 497   circuit->interface->info = NULL;
 498   circuit->interface = NULL;
 499
 500   return;
 501 }
 502
 503 void
 504 isis_circuit_up (struct isis_circuit *circuit)
 505 {
 506
 507   if (circuit->circ_type == CIRCUIT_T_BROADCAST)
 508     {
 509       if (circuit->area->min_bcast_mtu == 0 ||
 510           ISO_MTU (circuit) < circuit->area->min_bcast_mtu)
 511         circuit->area->min_bcast_mtu = ISO_MTU (circuit);
 512       /*
 513        * ISO 10589 - 8.4.1 Enabling of broadcast circuits
 514        */
 515
 516       /* initilizing the hello sending threads
 517        * for a broadcast IF
 518        */
 519
 520       /* 8.4.1 a) commence sending of IIH PDUs */
 521
 522       if (circuit->circuit_is_type & IS_LEVEL_1)
 523         {
 524           thread_add_event (master, send_lan_l1_hello, circuit, 0);
 525           circuit->u.bc.lan_neighs[0] = list_new ();
 526         }
 527
 528       if (circuit->circuit_is_type & IS_LEVEL_2)
 529         {
 530           thread_add_event (master, send_lan_l2_hello, circuit, 0);
 531           circuit->u.bc.lan_neighs[1] = list_new ();
 532         }
 533
 534       /* 8.4.1 b) FIXME: solicit ES - 8.4.6 */
 535       /* 8.4.1 c) FIXME: listen for ESH PDUs */
 536
 537       /* 8.4.1 d) */
 538       /* dr election will commence in... */
 539       if (circuit->circuit_is_type & IS_LEVEL_1)
 540         THREAD_TIMER_ON (master, circuit->u.bc.t_run_dr[0], isis_run_dr_l1,
 541                          circuit, 2 * circuit->hello_interval[0]);
 542       if (circuit->circuit_is_type & IS_LEVEL_2)
 543         THREAD_TIMER_ON (master, circuit->u.bc.t_run_dr[1], isis_run_dr_l2,
 544                          circuit, 2 * circuit->hello_interval[1]);
 545     }
 546   else
 547     {
 548       /* initializing the hello send threads
 549        * for a ptp IF
 550        */
 551       thread_add_event (master, send_p2p_hello, circuit, 0);
 552
 553     }
 554
 555   /* initializing PSNP timers */
 556   if (circuit->circuit_is_type & IS_LEVEL_1)
 557     {
 558       THREAD_TIMER_ON (master, circuit->t_send_psnp[0], send_l1_psnp, circuit,
 559                        isis_jitter (circuit->psnp_interval[0], PSNP_JITTER));
 560     }
 561
 562   if (circuit->circuit_is_type & IS_LEVEL_2)
 563     {
 564       THREAD_TIMER_ON (master, circuit->t_send_psnp[1], send_l2_psnp, circuit,
 565                        isis_jitter (circuit->psnp_interval[1], PSNP_JITTER));
 566     }
 567
 568   /* initialize the circuit streams */
 569   if (circuit->rcv_stream == NULL)
 570     circuit->rcv_stream = stream_new (ISO_MTU (circuit));
 571
 572   if (circuit->snd_stream == NULL)
 573     circuit->snd_stream = stream_new (ISO_MTU (circuit));
 574
 575   /* unified init for circuits */
 576   isis_sock_init (circuit);
 577
 578 #ifdef GNU_LINUX
 579   THREAD_READ_ON (master, circuit->t_read, isis_receive, circuit,
 580                   circuit->fd);
 581 #else
 582   THREAD_TIMER_ON (master, circuit->t_read, isis_receive, circuit,
 583                    circuit->fd);
 584 #endif
 585   return;
 586 }
 587
 588 void
 589 isis_circuit_down (struct isis_circuit *circuit)
 590 {
 591   /* Cancel all active threads -- FIXME: wrong place */
 592   /* HT: Read thread if GNU_LINUX, TIMER thread otherwise. */
 593   THREAD_OFF (circuit->t_read);
 594   if (circuit->circ_type == CIRCUIT_T_BROADCAST)
 595     {
 596       THREAD_TIMER_OFF (circuit->u.bc.t_send_lan_hello[0]);
 597       THREAD_TIMER_OFF (circuit->u.bc.t_send_lan_hello[1]);
 598       THREAD_TIMER_OFF (circuit->u.bc.t_run_dr[0]);
 599       THREAD_TIMER_OFF (circuit->u.bc.t_run_dr[1]);
 600     }
 601   else if (circuit->circ_type == CIRCUIT_T_P2P)
 602     {
 603       THREAD_TIMER_OFF (circuit->u.p2p.t_send_p2p_hello);
 604     }
 605   /* close the socket */
 606   close (circuit->fd);
 607
 608   return;
 609 }
 610
 611 void
 612 circuit_update_nlpids (struct isis_circuit *circuit)
 613 {
 614   circuit->nlpids.count = 0;
 615
 616   if (circuit->ip_router)
 617     {
 618       circuit->nlpids.nlpids[0] = NLPID_IP;
 619       circuit->nlpids.count++;
 620     }
 621 #ifdef HAVE_IPV6
 622   if (circuit->ipv6_router)
 623     {
 624       circuit->nlpids.nlpids[circuit->nlpids.count] = NLPID_IPV6;
 625       circuit->nlpids.count++;
 626     }
 627 #endif /* HAVE_IPV6 */
 628   return;
 629 }
 630
 631 int
 632 isis_interface_config_write (struct vty *vty)
 633 {
 634
 635   int write = 0;
 636   struct listnode *node, *node2;
 637   struct interface *ifp;
 638   struct isis_area *area;
 639   struct isis_circuit *c;
 640   int i;
 641
 642   for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp))
 643   {
 644     /* IF name */
 645     vty_out (vty, "interface %s%s", ifp->name, VTY_NEWLINE);
 646     write++;
 647     /* IF desc */
 648     if (ifp->desc)
 649       {
 650         vty_out (vty, " description %s%s", ifp->desc, VTY_NEWLINE);
 651         write++;
 652       }
 653     /* ISIS Circuit */
 654     for (ALL_LIST_ELEMENTS_RO (isis->area_list, node2, area))
 655     {
 656       c = circuit_lookup_by_ifp (ifp, area->circuit_list);
 657       if (c)
 658         {
 659           if (c->ip_router)
 660             {
 661               vty_out (vty, " ip router isis %s%s", area->area_tag,
 662                        VTY_NEWLINE);
 663               write++;
 664             }
 665 #ifdef HAVE_IPV6
 666           if (c->ipv6_router)
 667             {
 668               vty_out (vty, " ipv6 router isis %s%s", area->area_tag,
 669                        VTY_NEWLINE);
 670               write++;
 671             }
 672 #endif /* HAVE_IPV6 */
 673
 674           /* ISIS - circuit type */
 675           if (c->circuit_is_type == IS_LEVEL_1)
 676             {
 677               vty_out (vty, " isis circuit-type level-1%s", VTY_NEWLINE);
 678               write++;
 679             }
 680           else
 681             {
 682               if (c->circuit_is_type == IS_LEVEL_2)
 683                 {
 684                   vty_out (vty, " isis circuit-type level-2-only%s",
 685                            VTY_NEWLINE);
 686                   write++;
 687                 }
 688             }
 689
 690           /* ISIS - CSNP interval - FIXME: compare to cisco */
 691           if (c->csnp_interval[0] == c->csnp_interval[1])
 692             {
 693               if (c->csnp_interval[0] != CSNP_INTERVAL)
 694                 {
 695                   vty_out (vty, " isis csnp-interval %d%s",
 696                            c->csnp_interval[0], VTY_NEWLINE);
 697                   write++;
 698                 }
 699             }
 700           else
 701             {
 702               for (i = 0; i < 2; i++)
 703                 {
 704                   if (c->csnp_interval[1] != CSNP_INTERVAL)
 705                     {
 706                       vty_out (vty, " isis csnp-interval %d level-%d%s",
 707                                c->csnp_interval[1], i + 1, VTY_NEWLINE);
 708                       write++;
 709                     }
 710                 }
 711             }
 712
 713           /* ISIS - Hello padding - Defaults to true so only display if false */
 714           if (c->circ_type == CIRCUIT_T_BROADCAST && !c->u.bc.pad_hellos)
 715             {
 716               vty_out (vty, " no isis hello padding%s", VTY_NEWLINE);
 717               write++;
 718             }
 719
 720           /* ISIS - Hello interval - FIXME: compare to cisco */
 721           if (c->hello_interval[0] == c->hello_interval[1])
 722             {
 723               if (c->hello_interval[0] != HELLO_INTERVAL)
 724                 {
 725                   vty_out (vty, " isis hello-interval %d%s",
 726                            c->hello_interval[0], VTY_NEWLINE);
 727                   write++;
 728                 }
 729             }
 730           else
 731             {
 732               for (i = 0; i < 2; i++)
 733                 {
 734                   if (c->hello_interval[i] != HELLO_INTERVAL)
 735                     {
 736                       if (c->hello_interval[i] == HELLO_MINIMAL)
 737                         {
 738                           vty_out (vty,
 739                                    " isis hello-interval minimal level-%d%s",
 740                                    i + 1, VTY_NEWLINE);
 741                         }
 742                       else
 743                         {
 744                           vty_out (vty, " isis hello-interval %d level-%d%s",
 745                                    c->hello_interval[i], i + 1, VTY_NEWLINE);
 746                         }
 747                       write++;
 748                     }
 749                 }
 750             }
 751
 752           /* ISIS - Hello Multiplier */
 753           if (c->hello_multiplier[0] == c->hello_multiplier[1])
 754             {
 755               if (c->hello_multiplier[0] != HELLO_MULTIPLIER)
 756                 {
 757                   vty_out (vty, " isis hello-multiplier %d%s",
 758                            c->hello_multiplier[0], VTY_NEWLINE);
 759                   write++;
 760                 }
 761             }
 762           else
 763             {
 764               for (i = 0; i < 2; i++)
 765                 {
 766                   if (c->hello_multiplier[i] != HELLO_MULTIPLIER)
 767                     {
 768                       vty_out (vty, " isis hello-multiplier %d level-%d%s",
 769                                c->hello_multiplier[i], i + 1, VTY_NEWLINE);
 770                       write++;
 771                     }
 772                 }
 773             }
 774           /* ISIS - Priority */
 775           if (c->circ_type == CIRCUIT_T_BROADCAST)
 776             {
 777               if (c->u.bc.priority[0] == c->u.bc.priority[1])
 778                 {
 779                   if (c->u.bc.priority[0] != DEFAULT_PRIORITY)
 780                     {
 781                       vty_out (vty, " isis priority %d%s",
 782                                c->u.bc.priority[0], VTY_NEWLINE);
 783                       write++;
 784                     }
 785                 }
 786               else
 787                 {
 788                   for (i = 0; i < 2; i++)
 789                     {
 790                       if (c->u.bc.priority[i] != DEFAULT_PRIORITY)
 791                         {
 792                           vty_out (vty, " isis priority %d level-%d%s",
 793                                    c->u.bc.priority[i], i + 1, VTY_NEWLINE);
 794                           write++;
 795                         }
 796                     }
 797                 }
 798             }
 799           /* ISIS - Metric */
 800           if (c->te_metric[0] == c->te_metric[1])
 801             {
 802               if (c->te_metric[0] != DEFAULT_CIRCUIT_METRICS)
 803                 {
 804                   vty_out (vty, " isis metric %d%s", c->te_metric[0],
 805                            VTY_NEWLINE);
 806                   write++;
 807                 }
 808             }
 809           else
 810             {
 811               for (i = 0; i < 2; i++)
 812                 {
 813                   if (c->te_metric[i] != DEFAULT_CIRCUIT_METRICS)
 814                     {
 815                       vty_out (vty, " isis metric %d level-%d%s",
 816                                c->te_metric[i], i + 1, VTY_NEWLINE);
 817                       write++;
 818                     }
 819                 }
 820             }
 821
 822         }
 823     }
 824     vty_out (vty, "!%s", VTY_NEWLINE);
 825   }
 826
 827   return write;
 828 }
 829
 830 DEFUN (ip_router_isis,
 831        ip_router_isis_cmd,
 832        "ip router isis WORD",
 833        "Interface Internet Protocol config commands\n"
 834        "IP router interface commands\n"
 835        "IS-IS Routing for IP\n"
 836        "Routing process tag\n")
 837 {
 838   struct isis_circuit *c;
 839   struct interface *ifp;
 840   struct isis_area *area;
 841
 842   ifp = (struct interface *) vty->index;
 843   assert (ifp);
 844
 845   area = isis_area_lookup (argv[0]);
 846
 847   /* Prevent more than one circuit per interface */
 848   if (area)
 849     c = circuit_lookup_by_ifp (ifp, area->circuit_list);
 850   else
 851     c = NULL;
 852   if (c && (ifp->info != NULL))
 853     {
 854 #ifdef HAVE_IPV6
 855       if (c->ipv6_router == 0)
 856         {
 857 #endif /* HAVE_IPV6 */
 858           /* FIXME: Find the way to warn only vty users. */
 859           /* vty_out (vty, "ISIS circuit is already defined%s", VTY_NEWLINE); */
 860           return CMD_WARNING;
 861 #ifdef HAVE_IPV6
 862         }
 863 #endif /* HAVE_IPV6 */
 864     }
 865
 866   /* this is here for ciscopability */
 867   if (!area)
 868     {
 869       /* FIXME: Find the way to warn only vty users. */
 870       /* vty_out (vty, "Can't find ISIS instance %s", VTY_NEWLINE); */
 871       return CMD_WARNING;
 872     }
 873
 874   if (!c)
 875     {
 876       c = circuit_lookup_by_ifp (ifp, isis->init_circ_list);
 877       c = isis_csm_state_change (ISIS_ENABLE, c, area);
 878       c->interface = ifp;       /* this is automatic */
 879       ifp->info = c;            /* hardly related to the FSM */
 880     }
 881
 882   if (!c)
 883     return CMD_WARNING;
 884
 885   c->ip_router = 1;
 886   area->ip_circuits++;
 887   circuit_update_nlpids (c);
 888
 889   vty->node = INTERFACE_NODE;
 890
 891   return CMD_SUCCESS;
 892 }
 893
 894 DEFUN (no_ip_router_isis,
 895        no_ip_router_isis_cmd,
 896        "no ip router isis WORD",
 897        NO_STR
 898        "Interface Internet Protocol config commands\n"
 899        "IP router interface commands\n"
 900        "IS-IS Routing for IP\n"
 901        "Routing process tag\n")
 902 {
 903   struct isis_circuit *circuit = NULL;
 904   struct interface *ifp;
 905   struct isis_area *area;
 906   struct listnode *node;
 907
 908   ifp = (struct interface *) vty->index;
 909   assert (ifp);
 910
 911   area = isis_area_lookup (argv[0]);
 912   if (!area)
 913     {
 914       vty_out (vty, "Can't find ISIS instance %s", VTY_NEWLINE);
 915       return CMD_WARNING;
 916     }
 917   for (ALL_LIST_ELEMENTS_RO (area->circuit_list, node, circuit))
 918     if (circuit->interface == ifp)
 919       break;
 920   if (!circuit)
 921     {
 922       vty_out (vty, "Can't find ISIS interface %s", VTY_NEWLINE);
 923       return CMD_WARNING;
 924     }
 925   circuit->ip_router = 0;
 926   area->ip_circuits--;
 927 #ifdef HAVE_IPV6
 928   if (circuit->ipv6_router == 0)
 929 #endif
 930     isis_csm_state_change (ISIS_DISABLE, circuit, area);
 931
 932   return CMD_SUCCESS;
 933 }
 934
 935 DEFUN (isis_circuit_type,
 936        isis_circuit_type_cmd,
 937        "isis circuit-type (level-1|level-1-2|level-2-only)",
 938        "IS-IS commands\n"
 939        "Configure circuit type for interface\n"
 940        "Level-1 only adjacencies are formed\n"
 941        "Level-1-2 adjacencies are formed\n"
 942        "Level-2 only adjacencies are formed\n")
 943 {
 944   struct isis_circuit *circuit;
 945   struct interface *ifp;
 946   int circuit_t;
 947   int is_type;
 948
 949   ifp = vty->index;
 950   circuit = ifp->info;
 951   /* UGLY - will remove l8r */
 952   if (circuit == NULL)
 953     {
 954       return CMD_WARNING;
 955     }
 956
 957   /* XXX what to do when ip_router_isis is not executed */
 958   if (circuit->area == NULL)
 959     return CMD_WARNING;
 960
 961   assert (circuit);
 962
 963   circuit_t = string2circuit_t (argv[0]);
 964
 965   if (!circuit_t)
 966     {
 967       vty_out (vty, "Unknown circuit-type %s", VTY_NEWLINE);
 968       return CMD_SUCCESS;
 969     }
 970
 971   is_type = circuit->area->is_type;
 972   if (is_type == IS_LEVEL_1_AND_2 || is_type == circuit_t)
 973     isis_event_circuit_type_change (circuit, circuit_t);
 974   else
 975     {
 976       vty_out (vty, "invalid circuit level for area %s.%s",
 977                circuit->area->area_tag, VTY_NEWLINE);
 978     }
 979
 980   return CMD_SUCCESS;
 981 }
 982
 983 DEFUN (no_isis_circuit_type,
 984        no_isis_circuit_type_cmd,
 985        "no isis circuit-type (level-1|level-1-2|level-2-only)",
 986        NO_STR
 987        "IS-IS commands\n"
 988        "Configure circuit type for interface\n"
 989        "Level-1 only adjacencies are formed\n"
 990        "Level-1-2 adjacencies are formed\n"
 991        "Level-2 only adjacencies are formed\n")
 992 {
 993   struct isis_circuit *circuit;
 994   struct interface *ifp;
 995
 996   ifp = vty->index;
 997   circuit = ifp->info;
 998   if (circuit == NULL)
 999     {
1000       return CMD_WARNING;
1001     }
1002
1003   assert (circuit);
1004
1005   /*
1006    * Set the circuits level to its default value which is that of the area
1007    */
1008   isis_event_circuit_type_change (circuit, circuit->area->is_type);
1009
1010   return CMD_SUCCESS;
1011 }
1012
1013 DEFUN (isis_passwd,
1014        isis_passwd_cmd,
1015        "isis password WORD",
1016        "IS-IS commands\n"
1017        "Configure the authentication password for interface\n"
1018        "Password\n")
1019 {
1020   struct isis_circuit *circuit;
1021   struct interface *ifp;
1022   int len;
1023
1024   ifp = vty->index;
1025   circuit = ifp->info;
1026   if (circuit == NULL)
1027     {
1028       return CMD_WARNING;
1029     }
1030
1031   len = strlen (argv[0]);
1032   if (len > 254)
1033     {
1034       vty_out (vty, "Too long circuit password (>254)%s", VTY_NEWLINE);
1035       return CMD_WARNING;
1036     }
1037   circuit->passwd.len = len;
1038   circuit->passwd.type = ISIS_PASSWD_TYPE_CLEARTXT;
1039   strncpy ((char *)circuit->passwd.passwd, argv[0], 255);
1040
1041   return CMD_SUCCESS;
1042 }
1043
1044 DEFUN (no_isis_passwd,
1045        no_isis_passwd_cmd,
1046        "no isis password",
1047        NO_STR
1048        "IS-IS commands\n"
1049        "Configure the authentication password for interface\n")
1050 {
1051   struct isis_circuit *circuit;
1052   struct interface *ifp;
1053
1054   ifp = vty->index;
1055   circuit = ifp->info;
1056   if (circuit == NULL)
1057     {
1058       return CMD_WARNING;
1059     }
1060
1061   memset (&circuit->passwd, 0, sizeof (struct isis_passwd));
1062
1063   return CMD_SUCCESS;
1064 }
1065
1066
1067 DEFUN (isis_priority,
1068        isis_priority_cmd,
1069        "isis priority <0-127>",
1070        "IS-IS commands\n"
1071        "Set priority for Designated Router election\n"
1072        "Priority value\n")
1073 {
1074   struct isis_circuit *circuit;
1075   struct interface *ifp;
1076   int prio;
1077
1078   ifp = vty->index;
1079   circuit = ifp->info;
1080   if (circuit == NULL)
1081     {
1082       return CMD_WARNING;
1083     }
1084   assert (circuit);
1085
1086   prio = atoi (argv[0]);
1087
1088   circuit->u.bc.priority[0] = prio;
1089   circuit->u.bc.priority[1] = prio;
1090
1091   return CMD_SUCCESS;
1092 }
1093
1094 DEFUN (no_isis_priority,
1095        no_isis_priority_cmd,
1096        "no isis priority",
1097        NO_STR
1098        "IS-IS commands\n"
1099        "Set priority for Designated Router election\n")
1100 {
1101   struct isis_circuit *circuit;
1102   struct interface *ifp;
1103
1104   ifp = vty->index;
1105   circuit = ifp->info;
1106   if (circuit == NULL)
1107     {
1108       return CMD_WARNING;
1109     }
1110   assert (circuit);
1111
1112   circuit->u.bc.priority[0] = DEFAULT_PRIORITY;
1113   circuit->u.bc.priority[1] = DEFAULT_PRIORITY;
1114
1115   return CMD_SUCCESS;
1116 }
1117
1118 ALIAS (no_isis_priority,
1119        no_isis_priority_arg_cmd,
1120        "no isis priority <0-127>",
1121        NO_STR
1122        "IS-IS commands\n"
1123        "Set priority for Designated Router election\n"
1124        "Priority value\n")
1125
1126 DEFUN (isis_priority_l1,
1127        isis_priority_l1_cmd,
1128        "isis priority <0-127> level-1",
1129        "IS-IS commands\n"
1130        "Set priority for Designated Router election\n"
1131        "Priority value\n"
1132        "Specify priority for level-1 routing\n")
1133 {
1134   struct isis_circuit *circuit;
1135   struct interface *ifp;
1136   int prio;
1137
1138   ifp = vty->index;
1139   circuit = ifp->info;
1140   if (circuit == NULL)
1141     {
1142       return CMD_WARNING;
1143     }
1144   assert (circuit);
1145
1146   prio = atoi (argv[0]);
1147
1148   circuit->u.bc.priority[0] = prio;
1149
1150   return CMD_SUCCESS;
1151 }
1152
1153 DEFUN (no_isis_priority_l1,
1154        no_isis_priority_l1_cmd,
1155        "no isis priority level-1",
1156        NO_STR
1157        "IS-IS commands\n"
1158        "Set priority for Designated Router election\n"
1159        "Specify priority for level-1 routing\n")
1160 {
1161   struct isis_circuit *circuit;
1162   struct interface *ifp;
1163
1164   ifp = vty->index;
1165   circuit = ifp->info;
1166   if (circuit == NULL)
1167     {
1168       return CMD_WARNING;
1169     }
1170   assert (circuit);
1171
1172   circuit->u.bc.priority[0] = DEFAULT_PRIORITY;
1173
1174   return CMD_SUCCESS;
1175 }
1176
1177 ALIAS (no_isis_priority_l1,
1178        no_isis_priority_l1_arg_cmd,
1179        "no isis priority <0-127> level-1",
1180        NO_STR
1181        "IS-IS commands\n"
1182        "Set priority for Designated Router election\n"
1183        "Priority value\n"
1184        "Specify priority for level-1 routing\n")
1185
1186 DEFUN (isis_priority_l2,
1187        isis_priority_l2_cmd,
1188        "isis priority <0-127> level-2",
1189        "IS-IS commands\n"
1190        "Set priority for Designated Router election\n"
1191        "Priority value\n"
1192        "Specify priority for level-2 routing\n")
1193 {
1194   struct isis_circuit *circuit;
1195   struct interface *ifp;
1196   int prio;
1197
1198   ifp = vty->index;
1199   circuit = ifp->info;
1200   if (circuit == NULL)
1201     {
1202       return CMD_WARNING;
1203     }
1204   assert (circuit);
1205
1206   prio = atoi (argv[0]);
1207
1208   circuit->u.bc.priority[1] = prio;
1209
1210   return CMD_SUCCESS;
1211 }
1212
1213 DEFUN (no_isis_priority_l2,
1214        no_isis_priority_l2_cmd,
1215        "no isis priority level-2",
1216        NO_STR
1217        "IS-IS commands\n"
1218        "Set priority for Designated Router election\n"
1219        "Specify priority for level-2 routing\n")
1220 {
1221   struct isis_circuit *circuit;
1222   struct interface *ifp;
1223
1224   ifp = vty->index;
1225   circuit = ifp->info;
1226   if (circuit == NULL)
1227     {
1228       return CMD_WARNING;
1229     }
1230   assert (circuit);
1231
1232   circuit->u.bc.priority[1] = DEFAULT_PRIORITY;
1233
1234   return CMD_SUCCESS;
1235 }
1236
1237 ALIAS (no_isis_priority_l2,
1238        no_isis_priority_l2_arg_cmd,
1239        "no isis priority <0-127> level-2",
1240        NO_STR
1241        "IS-IS commands\n"
1242        "Set priority for Designated Router election\n"
1243        "Priority value\n"
1244        "Specify priority for level-2 routing\n")
1245
1246 /* Metric command */
1247   DEFUN (isis_metric,
1248        isis_metric_cmd,
1249        "isis metric <0-16777215>",
1250        "IS-IS commands\n"
1251        "Set default metric for circuit\n"
1252        "Default metric value\n")
1253 {
1254   struct isis_circuit *circuit;
1255   struct interface *ifp;
1256   int met;
1257
1258   ifp = vty->index;
1259   circuit = ifp->info;
1260   if (circuit == NULL)
1261     {
1262       return CMD_WARNING;
1263     }
1264   assert (circuit);
1265
1266   met = atoi (argv[0]);
1267
1268   circuit->te_metric[0] = met;
1269   circuit->te_metric[1] = met;
1270
1271   if (met > 63)
1272     met = 63;
1273
1274   circuit->metrics[0].metric_default = met;
1275   circuit->metrics[1].metric_default = met;
1276
1277   return CMD_SUCCESS;
1278 }
1279
1280 DEFUN (no_isis_metric,
1281        no_isis_metric_cmd,
1282        "no isis metric",
1283        NO_STR
1284        "IS-IS commands\n"
1285        "Set default metric for circuit\n")
1286 {
1287   struct isis_circuit *circuit;
1288   struct interface *ifp;
1289
1290   ifp = vty->index;
1291   circuit = ifp->info;
1292   if (circuit == NULL)
1293     {
1294       return CMD_WARNING;
1295     }
1296   assert (circuit);
1297
1298   circuit->te_metric[0] = DEFAULT_CIRCUIT_METRICS;
1299   circuit->te_metric[1] = DEFAULT_CIRCUIT_METRICS;
1300   circuit->metrics[0].metric_default = DEFAULT_CIRCUIT_METRICS;
1301   circuit->metrics[1].metric_default = DEFAULT_CIRCUIT_METRICS;
1302
1303   return CMD_SUCCESS;
1304 }
1305
1306 ALIAS (no_isis_metric,
1307        no_isis_metric_arg_cmd,
1308        "no isis metric <0-16777215>",
1309        NO_STR
1310        "IS-IS commands\n"
1311        "Set default metric for circuit\n"
1312        "Default metric value\n")
1313
1314 /* end of metrics */
1315 DEFUN (isis_hello_interval,
1316        isis_hello_interval_cmd,
1317        "isis hello-interval (<1-65535>|minimal)",
1318        "IS-IS commands\n"
1319        "Set Hello interval\n"
1320        "Hello interval value\n"
1321        "Holdtime 1 seconds, interval depends on multiplier\n")
1322 {
1323   struct isis_circuit *circuit;
1324   struct interface *ifp;
1325   int interval;
1326   char c;
1327
1328   ifp = vty->index;
1329   circuit = ifp->info;
1330   if (circuit == NULL)
1331     {
1332       return CMD_WARNING;
1333     }
1334   assert (circuit);
1335   c = *argv[0];
1336   if (isdigit ((int) c))
1337     {
1338       interval = atoi (argv[0]);
1339     }
1340   else
1341     interval = HELLO_MINIMAL;   /* FIXME: should be calculated */
1342
1343   circuit->hello_interval[0] = (u_int16_t) interval;
1344   circuit->hello_interval[1] = (u_int16_t) interval;
1345
1346   return CMD_SUCCESS;
1347 }
1348
1349 DEFUN (no_isis_hello_interval,
1350        no_isis_hello_interval_cmd,
1351        "no isis hello-interval",
1352        NO_STR
1353        "IS-IS commands\n"
1354        "Set Hello interval\n")
1355 {
1356   struct isis_circuit *circuit;
1357   struct interface *ifp;
1358
1359   ifp = vty->index;
1360   circuit = ifp->info;
1361   if (circuit == NULL)
1362     {
1363       return CMD_WARNING;
1364     }
1365   assert (circuit);
1366
1367
1368   circuit->hello_interval[0] = HELLO_INTERVAL;  /* Default is 1 sec. */
1369   circuit->hello_interval[1] = HELLO_INTERVAL;
1370
1371   return CMD_SUCCESS;
1372 }
1373
1374 ALIAS (no_isis_hello_interval,
1375        no_isis_hello_interval_arg_cmd,
1376        "no isis hello-interval (<1-65535>|minimal)",
1377        NO_STR
1378        "IS-IS commands\n"
1379        "Set Hello interval\n"
1380        "Hello interval value\n"
1381        "Holdtime 1 second, interval depends on multiplier\n")
1382
1383 DEFUN (isis_hello_interval_l1,
1384        isis_hello_interval_l1_cmd,
1385        "isis hello-interval (<1-65535>|minimal) level-1",
1386        "IS-IS commands\n"
1387        "Set Hello interval\n"
1388        "Hello interval value\n"
1389        "Holdtime 1 second, interval depends on multiplier\n"
1390        "Specify hello-interval for level-1 IIHs\n")
1391 {
1392   struct isis_circuit *circuit;
1393   struct interface *ifp;
1394   long interval;
1395   char c;
1396
1397   ifp = vty->index;
1398   circuit = ifp->info;
1399   if (circuit == NULL)
1400     {
1401       return CMD_WARNING;
1402     }
1403   assert (circuit);
1404
1405   c = *argv[0];
1406   if (isdigit ((int) c))
1407     {
1408       interval = atoi (argv[0]);
1409     }
1410   else
1411     interval = HELLO_MINIMAL;
1412
1413   circuit->hello_interval[0] = (u_int16_t) interval;
1414
1415   return CMD_SUCCESS;
1416 }
1417
1418 DEFUN (no_isis_hello_interval_l1,
1419        no_isis_hello_interval_l1_cmd,
1420        "no isis hello-interval level-1",
1421        NO_STR
1422        "IS-IS commands\n"
1423        "Set Hello interval\n"
1424        "Specify hello-interval for level-1 IIHs\n")
1425 {
1426   struct isis_circuit *circuit;
1427   struct interface *ifp;
1428
1429   ifp = vty->index;
1430   circuit = ifp->info;
1431   if (circuit == NULL)
1432     {
1433       return CMD_WARNING;
1434     }
1435   assert (circuit);
1436
1437
1438   circuit->hello_interval[0] = HELLO_INTERVAL;  /* Default is 1 sec. */
1439
1440   return CMD_SUCCESS;
1441 }
1442
1443 ALIAS (no_isis_hello_interval_l1,
1444        no_isis_hello_interval_l1_arg_cmd,
1445        "no isis hello-interval (<1-65535>|minimal) level-1",
1446        NO_STR
1447        "IS-IS commands\n"
1448        "Set Hello interval\n"
1449        "Hello interval value\n"
1450        "Holdtime 1 second, interval depends on multiplier\n"
1451        "Specify hello-interval for level-1 IIHs\n")
1452
1453 DEFUN (isis_hello_interval_l2,
1454        isis_hello_interval_l2_cmd,
1455        "isis hello-interval (<1-65535>|minimal) level-2",
1456        "IS-IS commands\n"
1457        "Set Hello interval\n"
1458        "Hello interval value\n"
1459        "Holdtime 1 second, interval depends on multiplier\n"
1460        "Specify hello-interval for level-2 IIHs\n")
1461 {
1462   struct isis_circuit *circuit;
1463   struct interface *ifp;
1464   long interval;
1465   char c;
1466
1467   ifp = vty->index;
1468   circuit = ifp->info;
1469   if (circuit == NULL)
1470     {
1471       return CMD_WARNING;
1472     }
1473   assert (circuit);
1474
1475   c = *argv[0];
1476   if (isdigit ((int) c))
1477     {
1478       interval = atoi (argv[0]);
1479     }
1480   else
1481     interval = HELLO_MINIMAL;
1482
1483   circuit->hello_interval[1] = (u_int16_t) interval;
1484
1485   return CMD_SUCCESS;
1486 }
1487
1488 DEFUN (no_isis_hello_interval_l2,
1489        no_isis_hello_interval_l2_cmd,
1490        "no isis hello-interval level-2",
1491        NO_STR
1492        "IS-IS commands\n"
1493        "Set Hello interval\n"
1494        "Specify hello-interval for level-2 IIHs\n")
1495 {
1496   struct isis_circuit *circuit;
1497   struct interface *ifp;
1498
1499   ifp = vty->index;
1500   circuit = ifp->info;
1501   if (circuit == NULL)
1502     {
1503       return CMD_WARNING;
1504     }
1505   assert (circuit);
1506
1507
1508   circuit->hello_interval[1] = HELLO_INTERVAL;  /* Default is 1 sec. */
1509
1510   return CMD_SUCCESS;
1511 }
1512
1513 ALIAS (no_isis_hello_interval_l2,
1514        no_isis_hello_interval_l2_arg_cmd,
1515        "no isis hello-interval (<1-65535>|minimal) level-2",
1516        NO_STR
1517        "IS-IS commands\n"
1518        "Set Hello interval\n"
1519        "Hello interval value\n"
1520        "Holdtime 1 second, interval depends on multiplier\n"
1521        "Specify hello-interval for level-2 IIHs\n")
1522
1523 DEFUN (isis_hello_multiplier,
1524        isis_hello_multiplier_cmd,
1525        "isis hello-multiplier <3-1000>",
1526        "IS-IS commands\n"
1527        "Set multiplier for Hello holding time\n"
1528        "Hello multiplier value\n")
1529 {
1530   struct isis_circuit *circuit;
1531   struct interface *ifp;
1532   int mult;
1533
1534   ifp = vty->index;
1535   circuit = ifp->info;
1536   if (circuit == NULL)
1537     {
1538       return CMD_WARNING;
1539     }
1540   assert (circuit);
1541
1542   mult = atoi (argv[0]);
1543
1544   circuit->hello_multiplier[0] = (u_int16_t) mult;
1545   circuit->hello_multiplier[1] = (u_int16_t) mult;
1546
1547   return CMD_SUCCESS;
1548 }
1549
1550 DEFUN (no_isis_hello_multiplier,
1551        no_isis_hello_multiplier_cmd,
1552        "no isis hello-multiplier",
1553        NO_STR
1554        "IS-IS commands\n"
1555        "Set multiplier for Hello holding time\n")
1556 {
1557   struct isis_circuit *circuit;
1558   struct interface *ifp;
1559
1560   ifp = vty->index;
1561   circuit = ifp->info;
1562   if (circuit == NULL)
1563     {
1564       return CMD_WARNING;
1565     }
1566   assert (circuit);
1567
1568   circuit->hello_multiplier[0] = HELLO_MULTIPLIER;
1569   circuit->hello_multiplier[1] = HELLO_MULTIPLIER;
1570
1571   return CMD_SUCCESS;
1572 }
1573
1574 ALIAS (no_isis_hello_multiplier,
1575        no_isis_hello_multiplier_arg_cmd,
1576        "no isis hello-multiplier <3-1000>",
1577        NO_STR
1578        "IS-IS commands\n"
1579        "Set multiplier for Hello holding time\n"
1580        "Hello multiplier value\n")
1581
1582 DEFUN (isis_hello_multiplier_l1,
1583        isis_hello_multiplier_l1_cmd,
1584        "isis hello-multiplier <3-1000> level-1",
1585        "IS-IS commands\n"
1586        "Set multiplier for Hello holding time\n"
1587        "Hello multiplier value\n"
1588        "Specify hello multiplier for level-1 IIHs\n")
1589 {
1590   struct isis_circuit *circuit;
1591   struct interface *ifp;
1592   int mult;
1593
1594   ifp = vty->index;
1595   circuit = ifp->info;
1596   if (circuit == NULL)
1597     {
1598       return CMD_WARNING;
1599     }
1600   assert (circuit);
1601
1602   mult = atoi (argv[0]);
1603
1604   circuit->hello_multiplier[0] = (u_int16_t) mult;
1605
1606   return CMD_SUCCESS;
1607 }
1608
1609 DEFUN (no_isis_hello_multiplier_l1,
1610        no_isis_hello_multiplier_l1_cmd,
1611        "no isis hello-multiplier level-1",
1612        NO_STR
1613        "IS-IS commands\n"
1614        "Set multiplier for Hello holding time\n"
1615        "Specify hello multiplier for level-1 IIHs\n")
1616 {
1617   struct isis_circuit *circuit;
1618   struct interface *ifp;
1619
1620   ifp = vty->index;
1621   circuit = ifp->info;
1622   if (circuit == NULL)
1623     {
1624       return CMD_WARNING;
1625     }
1626   assert (circuit);
1627
1628   circuit->hello_multiplier[0] = HELLO_MULTIPLIER;
1629
1630   return CMD_SUCCESS;
1631 }
1632
1633 ALIAS (no_isis_hello_multiplier_l1,
1634        no_isis_hello_multiplier_l1_arg_cmd,
1635        "no isis hello-multiplier <3-1000> level-1",
1636        NO_STR
1637        "IS-IS commands\n"
1638        "Set multiplier for Hello holding time\n"
1639        "Hello multiplier value\n"
1640        "Specify hello multiplier for level-1 IIHs\n")
1641
1642 DEFUN (isis_hello_multiplier_l2,
1643        isis_hello_multiplier_l2_cmd,
1644        "isis hello-multiplier <3-1000> level-2",
1645        "IS-IS commands\n"
1646        "Set multiplier for Hello holding time\n"
1647        "Hello multiplier value\n"
1648        "Specify hello multiplier for level-2 IIHs\n")
1649 {
1650   struct isis_circuit *circuit;
1651   struct interface *ifp;
1652   int mult;
1653
1654   ifp = vty->index;
1655   circuit = ifp->info;
1656   if (circuit == NULL)
1657     {
1658       return CMD_WARNING;
1659     }
1660   assert (circuit);
1661
1662   mult = atoi (argv[0]);
1663
1664   circuit->hello_multiplier[1] = (u_int16_t) mult;
1665
1666   return CMD_SUCCESS;
1667 }
1668
1669 DEFUN (no_isis_hello_multiplier_l2,
1670        no_isis_hello_multiplier_l2_cmd,
1671        "no isis hello-multiplier level-2",
1672        NO_STR
1673        "IS-IS commands\n"
1674        "Set multiplier for Hello holding time\n"
1675        "Specify hello multiplier for level-2 IIHs\n")
1676 {
1677   struct isis_circuit *circuit;
1678   struct interface *ifp;
1679
1680   ifp = vty->index;
1681   circuit = ifp->info;
1682   if (circuit == NULL)
1683     {
1684       return CMD_WARNING;
1685     }
1686   assert (circuit);
1687
1688   circuit->hello_multiplier[1] = HELLO_MULTIPLIER;
1689
1690   return CMD_SUCCESS;
1691 }
1692
1693 ALIAS (no_isis_hello_multiplier_l2,
1694        no_isis_hello_multiplier_l2_arg_cmd,
1695        "no isis hello-multiplier <3-1000> level-2",
1696        NO_STR
1697        "IS-IS commands\n"
1698        "Set multiplier for Hello holding time\n"
1699        "Hello multiplier value\n"
1700        "Specify hello multiplier for level-2 IIHs\n")
1701
1702 DEFUN (isis_hello,
1703        isis_hello_cmd,
1704        "isis hello padding",
1705        "IS-IS commands\n"
1706        "Add padding to IS-IS hello packets\n"
1707        "Pad hello packets\n"
1708        "<cr>\n")
1709 {
1710   struct interface *ifp;
1711   struct isis_circuit *circuit;
1712
1713   ifp = vty->index;
1714   circuit = ifp->info;
1715   if (circuit == NULL)
1716     {
1717       return CMD_WARNING;
1718     }
1719   assert (circuit);
1720
1721   circuit->u.bc.pad_hellos = 1;
1722
1723   return CMD_SUCCESS;
1724 }
1725
1726 DEFUN (no_isis_hello,
1727        no_isis_hello_cmd,
1728        "no isis hello padding",
1729        NO_STR
1730        "IS-IS commands\n"
1731        "Add padding to IS-IS hello packets\n"
1732        "Pad hello packets\n"
1733        "<cr>\n")
1734 {
1735   struct isis_circuit *circuit;
1736   struct interface *ifp;
1737
1738   ifp = vty->index;
1739   circuit = ifp->info;
1740   if (circuit == NULL)
1741     {
1742       return CMD_WARNING;
1743     }
1744   assert (circuit);
1745
1746   circuit->u.bc.pad_hellos = 0;
1747
1748   return CMD_SUCCESS;
1749 }
1750
1751 DEFUN (csnp_interval,
1752        csnp_interval_cmd,
1753        "isis csnp-interval <0-65535>",
1754        "IS-IS commands\n"
1755        "Set CSNP interval in seconds\n"
1756        "CSNP interval value\n")
1757 {
1758   struct isis_circuit *circuit;
1759   struct interface *ifp;
1760   unsigned long interval;
1761
1762   ifp = vty->index;
1763   circuit = ifp->info;
1764   if (circuit == NULL)
1765     {
1766       return CMD_WARNING;
1767     }
1768   assert (circuit);
1769
1770   interval = atol (argv[0]);
1771
1772   circuit->csnp_interval[0] = (u_int16_t) interval;
1773   circuit->csnp_interval[1] = (u_int16_t) interval;
1774
1775   return CMD_SUCCESS;
1776 }
1777
1778 DEFUN (no_csnp_interval,
1779        no_csnp_interval_cmd,
1780        "no isis csnp-interval",
1781        NO_STR
1782        "IS-IS commands\n"
1783        "Set CSNP interval in seconds\n")
1784 {
1785   struct isis_circuit *circuit;
1786   struct interface *ifp;
1787
1788   ifp = vty->index;
1789   circuit = ifp->info;
1790   if (circuit == NULL)
1791     {
1792       return CMD_WARNING;
1793     }
1794   assert (circuit);
1795
1796   circuit->csnp_interval[0] = CSNP_INTERVAL;
1797   circuit->csnp_interval[1] = CSNP_INTERVAL;
1798
1799   return CMD_SUCCESS;
1800 }
1801
1802 ALIAS (no_csnp_interval,
1803        no_csnp_interval_arg_cmd,
1804        "no isis csnp-interval <0-65535>",
1805        NO_STR
1806        "IS-IS commands\n"
1807        "Set CSNP interval in seconds\n"
1808        "CSNP interval value\n")
1809
1810 DEFUN (csnp_interval_l1,
1811        csnp_interval_l1_cmd,
1812        "isis csnp-interval <0-65535> level-1",
1813        "IS-IS commands\n"
1814        "Set CSNP interval in seconds\n"
1815        "CSNP interval value\n"
1816        "Specify interval for level-1 CSNPs\n")
1817 {
1818   struct isis_circuit *circuit;
1819   struct interface *ifp;
1820   unsigned long interval;
1821
1822   ifp = vty->index;
1823   circuit = ifp->info;
1824   if (circuit == NULL)
1825     {
1826       return CMD_WARNING;
1827     }
1828   assert (circuit);
1829
1830   interval = atol (argv[0]);
1831
1832   circuit->csnp_interval[0] = (u_int16_t) interval;
1833
1834   return CMD_SUCCESS;
1835 }
1836
1837 DEFUN (no_csnp_interval_l1,
1838        no_csnp_interval_l1_cmd,
1839        "no isis csnp-interval level-1",
1840        NO_STR
1841        "IS-IS commands\n"
1842        "Set CSNP interval in seconds\n"
1843        "Specify interval for level-1 CSNPs\n")
1844 {
1845   struct isis_circuit *circuit;
1846   struct interface *ifp;
1847
1848   ifp = vty->index;
1849   circuit = ifp->info;
1850   if (circuit == NULL)
1851     {
1852       return CMD_WARNING;
1853     }
1854   assert (circuit);
1855
1856   circuit->csnp_interval[0] = CSNP_INTERVAL;
1857
1858   return CMD_SUCCESS;
1859 }
1860
1861 ALIAS (no_csnp_interval_l1,
1862        no_csnp_interval_l1_arg_cmd,
1863        "no isis csnp-interval <0-65535> level-1",
1864        NO_STR
1865        "IS-IS commands\n"
1866        "Set CSNP interval in seconds\n"
1867        "CSNP interval value\n"
1868        "Specify interval for level-1 CSNPs\n")
1869
1870 DEFUN (csnp_interval_l2,
1871        csnp_interval_l2_cmd,
1872        "isis csnp-interval <0-65535> level-2",
1873        "IS-IS commands\n"
1874        "Set CSNP interval in seconds\n"
1875        "CSNP interval value\n"
1876        "Specify interval for level-2 CSNPs\n")
1877 {
1878   struct isis_circuit *circuit;
1879   struct interface *ifp;
1880   unsigned long interval;
1881
1882   ifp = vty->index;
1883   circuit = ifp->info;
1884   if (circuit == NULL)
1885     {
1886       return CMD_WARNING;
1887     }
1888   assert (circuit);
1889
1890   interval = atol (argv[0]);
1891
1892   circuit->csnp_interval[1] = (u_int16_t) interval;
1893
1894   return CMD_SUCCESS;
1895 }
1896
1897 DEFUN (no_csnp_interval_l2,
1898        no_csnp_interval_l2_cmd,
1899        "no isis csnp-interval level-2",
1900        NO_STR
1901        "IS-IS commands\n"
1902        "Set CSNP interval in seconds\n"
1903        "Specify interval for level-2 CSNPs\n")
1904 {
1905   struct isis_circuit *circuit;
1906   struct interface *ifp;
1907
1908   ifp = vty->index;
1909   circuit = ifp->info;
1910   if (circuit == NULL)
1911     {
1912       return CMD_WARNING;
1913     }
1914   assert (circuit);
1915
1916   circuit->csnp_interval[1] = CSNP_INTERVAL;
1917
1918   return CMD_SUCCESS;
1919 }
1920
1921 ALIAS (no_csnp_interval_l2,
1922        no_csnp_interval_l2_arg_cmd,
1923        "no isis csnp-interval <0-65535> level-2",
1924        NO_STR
1925        "IS-IS commands\n"
1926        "Set CSNP interval in seconds\n"
1927        "CSNP interval value\n"
1928        "Specify interval for level-2 CSNPs\n")
1929
1930 #ifdef HAVE_IPV6
1931 DEFUN (ipv6_router_isis,
1932        ipv6_router_isis_cmd,
1933        "ipv6 router isis WORD",
1934        "IPv6 interface subcommands\n"
1935        "IPv6 Router interface commands\n"
1936        "IS-IS Routing for IPv6\n"
1937        "Routing process tag\n")
1938 {
1939   struct isis_circuit *c;
1940   struct interface *ifp;
1941   struct isis_area *area;
1942
1943   ifp = (struct interface *) vty->index;
1944   assert (ifp);
1945
1946   area = isis_area_lookup (argv[0]);
1947
1948   /* Prevent more than one circuit per interface */
1949   if (area)
1950     c = circuit_lookup_by_ifp (ifp, area->circuit_list);
1951   else
1952     c = NULL;
1953
1954   if (c && (ifp->info != NULL))
1955     {
1956       if (c->ipv6_router == 1)
1957         {
1958           vty_out (vty, "ISIS circuit is already defined for IPv6%s",
1959                    VTY_NEWLINE);
1960           return CMD_WARNING;
1961         }
1962     }
1963
1964   /* this is here for ciscopability */
1965   if (!area)
1966     {
1967       vty_out (vty, "Can't find ISIS instance %s", VTY_NEWLINE);
1968       return CMD_WARNING;
1969     }
1970
1971   if (!c)
1972     {
1973       c = circuit_lookup_by_ifp (ifp, isis->init_circ_list);
1974       c = isis_csm_state_change (ISIS_ENABLE, c, area);
1975       c->interface = ifp;
1976       ifp->info = c;
1977     }
1978
1979   if (!c)
1980     return CMD_WARNING;
1981
1982   c->ipv6_router = 1;
1983   area->ipv6_circuits++;
1984   circuit_update_nlpids (c);
1985
1986   vty->node = INTERFACE_NODE;
1987
1988   return CMD_SUCCESS;
1989 }
1990
1991 DEFUN (no_ipv6_router_isis,
1992        no_ipv6_router_isis_cmd,
1993        "no ipv6 router isis WORD",
1994        NO_STR
1995        "IPv6 interface subcommands\n"
1996        "IPv6 Router interface commands\n"
1997        "IS-IS Routing for IPv6\n"
1998        "Routing process tag\n")
1999 {
2000   struct isis_circuit *c;
2001   struct interface *ifp;
2002   struct isis_area *area;
2003
2004   ifp = (struct interface *) vty->index;
2005   /* UGLY - will remove l8r
2006      if (circuit == NULL) {
2007      return CMD_WARNING;
2008      } */
2009   assert (ifp);
2010
2011   area = isis_area_lookup (argv[0]);
2012   if (!area)
2013     {
2014       vty_out (vty, "Can't find ISIS instance %s", VTY_NEWLINE);
2015       return CMD_WARNING;
2016     }
2017
2018   c = circuit_lookup_by_ifp (ifp, area->circuit_list);
2019   if (!c)
2020     return CMD_WARNING;
2021
2022   c->ipv6_router = 0;
2023   area->ipv6_circuits--;
2024   if (c->ip_router == 0)
2025     isis_csm_state_change (ISIS_DISABLE, c, area);
2026
2027   return CMD_SUCCESS;
2028 }
2029 #endif /* HAVE_IPV6 */
2030
2031 struct cmd_node interface_node = {
2032   INTERFACE_NODE,
2033   "%s(config-if)# ",
2034   1,
2035 };
2036
2037 int
2038 isis_if_new_hook (struct interface *ifp)
2039 {
2040 /* FIXME: Discuss if the circuit should be created here
2041   ifp->info = XMALLOC (MTYPE_ISIS_IF_INFO, sizeof (struct isis_if_info)); */
2042   ifp->info = NULL;
2043   return 0;
2044 }
2045
2046 int
2047 isis_if_delete_hook (struct interface *ifp)
2048 {
2049 /* FIXME: Discuss if the circuit should be created here
2050   XFREE (MTYPE_ISIS_IF_INFO, ifp->info);*/
2051   ifp->info = NULL;
2052   return 0;
2053 }
2054
2055 void
2056 isis_circuit_init ()
2057 {
2058   /* Initialize Zebra interface data structure */
2059   if_init ();
2060   if_add_hook (IF_NEW_HOOK, isis_if_new_hook);
2061   if_add_hook (IF_DELETE_HOOK, isis_if_delete_hook);
2062
2063   /* Install interface node */
2064   install_node (&interface_node, isis_interface_config_write);
2065   install_element (CONFIG_NODE, &interface_cmd);
2066
2067   install_default (INTERFACE_NODE);
2068   install_element (INTERFACE_NODE, &interface_desc_cmd);
2069   install_element (INTERFACE_NODE, &no_interface_desc_cmd);
2070
2071   install_element (INTERFACE_NODE, &ip_router_isis_cmd);
2072   install_element (INTERFACE_NODE, &no_ip_router_isis_cmd);
2073
2074   install_element (INTERFACE_NODE, &isis_circuit_type_cmd);
2075   install_element (INTERFACE_NODE, &no_isis_circuit_type_cmd);
2076
2077   install_element (INTERFACE_NODE, &isis_passwd_cmd);
2078   install_element (INTERFACE_NODE, &no_isis_passwd_cmd);
2079
2080   install_element (INTERFACE_NODE, &isis_priority_cmd);
2081   install_element (INTERFACE_NODE, &no_isis_priority_cmd);
2082   install_element (INTERFACE_NODE, &no_isis_priority_arg_cmd);
2083   install_element (INTERFACE_NODE, &isis_priority_l1_cmd);
2084   install_element (INTERFACE_NODE, &no_isis_priority_l1_cmd);
2085   install_element (INTERFACE_NODE, &no_isis_priority_l1_arg_cmd);
2086   install_element (INTERFACE_NODE, &isis_priority_l2_cmd);
2087   install_element (INTERFACE_NODE, &no_isis_priority_l2_cmd);
2088   install_element (INTERFACE_NODE, &no_isis_priority_l2_arg_cmd);
2089
2090   install_element (INTERFACE_NODE, &isis_metric_cmd);
2091   install_element (INTERFACE_NODE, &no_isis_metric_cmd);
2092   install_element (INTERFACE_NODE, &no_isis_metric_arg_cmd);
2093
2094   install_element (INTERFACE_NODE, &isis_hello_interval_cmd);
2095   install_element (INTERFACE_NODE, &no_isis_hello_interval_cmd);
2096   install_element (INTERFACE_NODE, &no_isis_hello_interval_arg_cmd);
2097   install_element (INTERFACE_NODE, &isis_hello_interval_l1_cmd);
2098   install_element (INTERFACE_NODE, &no_isis_hello_interval_l1_cmd);
2099   install_element (INTERFACE_NODE, &no_isis_hello_interval_l1_arg_cmd);
2100   install_element (INTERFACE_NODE, &isis_hello_interval_l2_cmd);
2101   install_element (INTERFACE_NODE, &no_isis_hello_interval_l2_cmd);
2102   install_element (INTERFACE_NODE, &no_isis_hello_interval_l2_arg_cmd);
2103
2104   install_element (INTERFACE_NODE, &isis_hello_multiplier_cmd);
2105   install_element (INTERFACE_NODE, &no_isis_hello_multiplier_cmd);
2106   install_element (INTERFACE_NODE, &no_isis_hello_multiplier_arg_cmd);
2107   install_element (INTERFACE_NODE, &isis_hello_multiplier_l1_cmd);
2108   install_element (INTERFACE_NODE, &no_isis_hello_multiplier_l1_cmd);
2109   install_element (INTERFACE_NODE, &no_isis_hello_multiplier_l1_arg_cmd);
2110   install_element (INTERFACE_NODE, &isis_hello_multiplier_l2_cmd);
2111   install_element (INTERFACE_NODE, &no_isis_hello_multiplier_l2_cmd);
2112   install_element (INTERFACE_NODE, &no_isis_hello_multiplier_l2_arg_cmd);
2113
2114   install_element (INTERFACE_NODE, &isis_hello_cmd);
2115   install_element (INTERFACE_NODE, &no_isis_hello_cmd);
2116   install_element (INTERFACE_NODE, &csnp_interval_cmd);
2117   install_element (INTERFACE_NODE, &no_csnp_interval_cmd);
2118   install_element (INTERFACE_NODE, &no_csnp_interval_arg_cmd);
2119   install_element (INTERFACE_NODE, &csnp_interval_l1_cmd);
2120   install_element (INTERFACE_NODE, &no_csnp_interval_l1_cmd);
2121   install_element (INTERFACE_NODE, &no_csnp_interval_l1_arg_cmd);
2122   install_element (INTERFACE_NODE, &csnp_interval_l2_cmd);
2123   install_element (INTERFACE_NODE, &no_csnp_interval_l2_cmd);
2124   install_element (INTERFACE_NODE, &no_csnp_interval_l2_arg_cmd);
2125
2126 #ifdef HAVE_IPV6
2127   install_element (INTERFACE_NODE, &ipv6_router_isis_cmd);
2128   install_element (INTERFACE_NODE, &no_ipv6_router_isis_cmd);
2129 #endif
2130 }