zebra/interface.c

   1 /*
   2  * Interface function.
   3  * Copyright (C) 1997, 1999 Kunihiro Ishiguro
   4  *
   5  * This file is part of GNU Zebra.
   6  *
   7  * GNU Zebra is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * later version.
  11  *
  12  * GNU Zebra is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
  19  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  20  * 02111-1307, USA.
  21  */
  22
  23 #include <zebra.h>
  24
  25 #include "if.h"
  26 #include "vty.h"
  27 #include "sockunion.h"
  28 #include "prefix.h"
  29 #include "command.h"
  30 #include "memory.h"
  31 #include "ioctl.h"
  32 #include "connected.h"
  33 #include "log.h"
  34 #include "zclient.h"
  35
  36 #include "zebra/interface.h"
  37 #include "zebra/rtadv.h"
  38 #include "zebra/rib.h"
  39 #include "zebra/zserv.h"
  40 #include "zebra/redistribute.h"
  41 #include "zebra/debug.h"
  42 #include "zebra/irdp.h"
  43 \f
  44 /* Allocate a new internal interface index
  45  * This works done from the top so that %d macros
  46  * print a - sign!
  47  */
  48 static unsigned int
  49 if_new_intern_ifindex (void)
  50 {
  51   /* Start here so that first one assigned is 0xFFFFFFFF */
  52   static unsigned int ifindex = IFINDEX_INTERNBASE + 1;
  53
  54   for (;;)
  55     {
  56       ifindex--;
  57       if ( ifindex <= IFINDEX_INTERNBASE )
  58        ifindex = 0xFFFFFFFF;
  59
  60       if (if_lookup_by_index(ifindex) == NULL)
  61        return ifindex;
  62     }
  63 }
  64
  65 /* Called when new interface is added. */
  66 int
  67 if_zebra_new_hook (struct interface *ifp)
  68 {
  69   struct zebra_if *zebra_if;
  70
  71   zebra_if = XMALLOC (MTYPE_TMP, sizeof (struct zebra_if));
  72   memset (zebra_if, 0, sizeof (struct zebra_if));
  73
  74   zebra_if->multicast = IF_ZEBRA_MULTICAST_UNSPEC;
  75   zebra_if->shutdown = IF_ZEBRA_SHUTDOWN_UNSPEC;
  76
  77 #ifdef RTADV
  78   {
  79     /* Set default router advertise values. */
  80     struct rtadvconf *rtadv;
  81
  82     rtadv = &zebra_if->rtadv;
  83
  84     rtadv->AdvSendAdvertisements = 0;
  85     rtadv->MaxRtrAdvInterval = RTADV_MAX_RTR_ADV_INTERVAL;
  86     rtadv->MinRtrAdvInterval = RTADV_MIN_RTR_ADV_INTERVAL;
  87     rtadv->AdvIntervalTimer = 0;
  88     rtadv->AdvManagedFlag = 0;
  89     rtadv->AdvOtherConfigFlag = 0;
  90     rtadv->AdvLinkMTU = 0;
  91     rtadv->AdvReachableTime = 0;
  92     rtadv->AdvRetransTimer = 0;
  93     rtadv->AdvCurHopLimit = 0;
  94     rtadv->AdvDefaultLifetime = RTADV_ADV_DEFAULT_LIFETIME;
  95
  96     rtadv->AdvPrefixList = list_new ();
  97   }
  98 #endif /* RTADV */
  99
 100   /* Initialize installed address chains tree. */
 101   zebra_if->ipv4_subnets = route_table_init ();
 102
 103   ifp->info = zebra_if;
 104   return 0;
 105 }
 106
 107 /* Called when interface is deleted. */
 108 int
 109 if_zebra_delete_hook (struct interface *ifp)
 110 {
 111   struct zebra_if *zebra_if;
 112
 113   if (ifp->info)
 114     {
 115       zebra_if = ifp->info;
 116
 117       /* Free installed address chains tree. */
 118       if (zebra_if->ipv4_subnets)
 119         route_table_finish (zebra_if->ipv4_subnets);
 120
 121       XFREE (MTYPE_TMP, zebra_if);
 122     }
 123
 124   return 0;
 125 }
 126
 127 /* Tie an interface address to its derived subnet list of addresses. */
 128 int
 129 if_subnet_add (struct interface *ifp, struct connected *ifc)
 130 {
 131   struct route_node *rn;
 132   struct zebra_if *zebra_if;
 133   struct prefix cp;
 134   struct list *addr_list;
 135
 136   assert (ifp && ifp->info && ifc);
 137   zebra_if = ifp->info;
 138
 139   /* Get address derived subnet node and associated address list, while marking
 140      address secondary attribute appropriately. */
 141   cp = *ifc->address;
 142   apply_mask (&cp);
 143   rn = route_node_get (zebra_if->ipv4_subnets, &cp);
 144
 145   if ((addr_list = rn->info))
 146     SET_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY);
 147   else
 148     {
 149       UNSET_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY);
 150       rn->info = addr_list = list_new ();
 151       route_lock_node (rn);
 152     }
 153
 154   /* Tie address at the tail of address list. */
 155   listnode_add (addr_list, ifc);
 156
 157   /* Return list element count. */
 158   return (addr_list->count);
 159 }
 160
 161 /* Untie an interface address from its derived subnet list of addresses. */
 162 int
 163 if_subnet_delete (struct interface *ifp, struct connected *ifc)
 164 {
 165   struct route_node *rn;
 166   struct zebra_if *zebra_if;
 167   struct list *addr_list;
 168
 169   assert (ifp && ifp->info && ifc);
 170   zebra_if = ifp->info;
 171
 172   /* Get address derived subnet node. */
 173   rn = route_node_lookup (zebra_if->ipv4_subnets, ifc->address);
 174   if (! (rn && rn->info))
 175     return -1;
 176   route_unlock_node (rn);
 177
 178   /* Untie address from subnet's address list. */
 179   addr_list = rn->info;
 180   listnode_delete (addr_list, ifc);
 181   route_unlock_node (rn);
 182
 183   /* Return list element count, if not empty. */
 184   if (addr_list->count)
 185     {
 186       /* If deleted address is primary, mark subsequent one as such and distribute. */
 187       if (! CHECK_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY))
 188         {
 189           ifc = (struct connected *) addr_list->head->data;
 190           zebra_interface_address_delete_update (ifp, ifc);
 191           UNSET_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY);
 192           zebra_interface_address_add_update (ifp, ifc);
 193         }
 194
 195       return addr_list->count;
 196     }
 197
 198   /* Otherwise, free list and route node. */
 199   list_free (addr_list);
 200   rn->info = NULL;
 201   route_unlock_node (rn);
 202
 203   return 0;
 204 }
 205
 206 /* Wake up configured address if it is not in current kernel
 207    address. */
 208 void
 209 if_addr_wakeup (struct interface *ifp)
 210 {
 211   struct listnode *node;
 212   struct connected *ifc;
 213   struct prefix *p;
 214   int ret;
 215
 216   for (node = listhead (ifp->connected); node; nextnode (node))
 217     {
 218       ifc = getdata (node);
 219       p = ifc->address;
 220
 221       if (CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED)
 222           && ! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL))
 223         {
 224           /* Address check. */
 225           if (p->family == AF_INET)
 226             {
 227               if (! if_is_up (ifp))
 228                 {
 229                   if_set_flags (ifp, IFF_UP | IFF_RUNNING);
 230                   if_refresh (ifp);
 231                 }
 232
 233               ret = if_set_prefix (ifp, ifc);
 234               if (ret < 0)
 235                 {
 236                   zlog_warn ("Can't set interface's address: %s",
 237                              strerror(errno));
 238                   continue;
 239                 }
 240
 241               /* Add to subnet chain list. */
 242               if_subnet_add (ifp, ifc);
 243
 244               SET_FLAG (ifc->conf, ZEBRA_IFC_REAL);
 245
 246               zebra_interface_address_add_update (ifp, ifc);
 247
 248               if (if_is_operative(ifp))
 249                 connected_up_ipv4 (ifp, ifc);
 250             }
 251 #ifdef HAVE_IPV6
 252           if (p->family == AF_INET6)
 253             {
 254               if (! if_is_up (ifp))
 255                 {
 256                   if_set_flags (ifp, IFF_UP | IFF_RUNNING);
 257                   if_refresh (ifp);
 258                 }
 259
 260               ret = if_prefix_add_ipv6 (ifp, ifc);
 261               if (ret < 0)
 262                 {
 263                   zlog_warn ("Can't set interface's address: %s",
 264                              strerror(errno));
 265                   continue;
 266                 }
 267               SET_FLAG (ifc->conf, ZEBRA_IFC_REAL);
 268
 269               zebra_interface_address_add_update (ifp, ifc);
 270
 271               if (if_is_operative(ifp))
 272                 connected_up_ipv6 (ifp, ifc);
 273             }
 274 #endif /* HAVE_IPV6 */
 275         }
 276     }
 277 }
 278
 279 /* Handle interface addition */
 280 void
 281 if_add_update (struct interface *ifp)
 282 {
 283   struct zebra_if *if_data;
 284
 285   if_data = ifp->info;
 286   if (if_data->multicast == IF_ZEBRA_MULTICAST_ON)
 287     if_set_flags (ifp, IFF_MULTICAST);
 288   else if (if_data->multicast == IF_ZEBRA_MULTICAST_OFF)
 289     if_unset_flags (ifp, IFF_MULTICAST);
 290
 291   zebra_interface_add_update (ifp);
 292
 293   if (! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))
 294     {
 295       SET_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE);
 296
 297       if_addr_wakeup (ifp);
 298
 299       if (IS_ZEBRA_DEBUG_KERNEL)
 300         zlog_info ("interface %s index %d becomes active.",
 301                    ifp->name, ifp->ifindex);
 302     }
 303   else
 304     {
 305       if (IS_ZEBRA_DEBUG_KERNEL)
 306         zlog_info ("interface %s index %d is added.", ifp->name, ifp->ifindex);
 307     }
 308 }
 309
 310
 311 /* Handle an interface delete event
 312  *
 313  * This function is only called  when support for
 314  * RTM_IFANNOUNCE or AF_NETLINK sockets (RTM_DELLINK message)
 315  * is available. It is not called on, eg, Solaris.
 316  */
 317 #if (defined(RTM_IFANNOUNCE) || defined(HAVE_NETLINK))
 318 void
 319 if_delete_update (struct interface *ifp)
 320 {
 321   struct listnode *node;
 322   struct listnode *next;
 323   struct listnode *first;
 324   struct listnode *last;
 325   struct connected *ifc;
 326   struct prefix *p;
 327   struct route_node *rn;
 328   struct zebra_if *zebra_if;
 329   struct list *addr_list;
 330
 331   zebra_if = ifp->info;
 332
 333   if (if_is_up(ifp))
 334     {
 335       zlog_err ("interface %s index %d is still up while being deleted.",
 336             ifp->name, ifp->ifindex);
 337       return;
 338     }
 339
 340   /* Mark interface as inactive */
 341   UNSET_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE);
 342
 343   if (IS_ZEBRA_DEBUG_KERNEL)
 344     zlog_info ("interface %s index %d is now inactive.",
 345                ifp->name, ifp->ifindex);
 346
 347   /* Delete connected routes from the kernel. */
 348   if (ifp->connected)
 349     {
 350       last = NULL;
 351       while ((node = (last ? last->next : listhead (ifp->connected))))
 352         {
 353           ifc = getdata (node);
 354           p = ifc->address;
 355
 356           if (p->family == AF_INET)
 357             {
 358               rn = route_node_lookup (zebra_if->ipv4_subnets, p);
 359               route_unlock_node (rn);
 360               addr_list = (struct list *) rn->info;
 361
 362               /* Remove addresses, secondaries first. */
 363               first = listhead (addr_list);
 364               for (node = first->next; node || first; node = next)
 365                 {
 366                   if (! node)
 367                     {
 368                       node = first;
 369                       first = NULL;
 370                     }
 371                   next = node->next;
 372
 373                   ifc = getdata (node);
 374                   p = ifc->address;
 375
 376                   connected_down_ipv4 (ifp, ifc);
 377
 378                   zebra_interface_address_delete_update (ifp, ifc);
 379
 380                   UNSET_FLAG (ifc->conf, ZEBRA_IFC_REAL);
 381
 382                   /* Remove from subnet chain. */
 383                   list_delete_node (addr_list, node);
 384                   route_unlock_node (rn);
 385
 386                   /* Remove from interface address list (unconditionally). */
 387                   listnode_delete (ifp->connected, ifc);
 388                   connected_free (ifc);
 389                 }
 390
 391               /* Free chain list and respective route node. */
 392               list_delete (addr_list);
 393               rn->info = NULL;
 394               route_unlock_node (rn);
 395             }
 396 #ifdef HAVE_IPV6
 397           else if (p->family == AF_INET6)
 398             {
 399               connected_down_ipv6 (ifp, ifc);
 400
 401               zebra_interface_address_delete_update (ifp, ifc);
 402
 403               UNSET_FLAG (ifc->conf, ZEBRA_IFC_REAL);
 404
 405               if (CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED))
 406                 last = node;
 407               else
 408                 {
 409                   listnode_delete (ifp->connected, ifc);
 410                   connected_free (ifc);
 411                 }
 412             }
 413 #endif /* HAVE_IPV6 */
 414         }
 415     }
 416   zebra_interface_delete_update (ifp);
 417 }
 418 #endif /* (defined(RTM_IFANNOUNCE) || defined(HAVE_NETLINK) */
 419
 420 /* Interface is up. */
 421 void
 422 if_up (struct interface *ifp)
 423 {
 424   struct listnode *node;
 425   struct listnode *next;
 426   struct connected *ifc;
 427   struct prefix *p;
 428
 429   /* Notify the protocol daemons. */
 430   zebra_interface_up_update (ifp);
 431
 432   /* Install connected routes to the kernel. */
 433   if (ifp->connected)
 434     {
 435       for (node = listhead (ifp->connected); node; node = next)
 436         {
 437           next = node->next;
 438           ifc = getdata (node);
 439           p = ifc->address;
 440
 441           if (p->family == AF_INET)
 442             connected_up_ipv4 (ifp, ifc);
 443 #ifdef HAVE_IPV6
 444           else if (p->family == AF_INET6)
 445             connected_up_ipv6 (ifp, ifc);
 446 #endif /* HAVE_IPV6 */
 447         }
 448     }
 449
 450   /* Examine all static routes. */
 451   rib_update ();
 452 }
 453
 454 /* Interface goes down.  We have to manage different behavior of based
 455    OS. */
 456 void
 457 if_down (struct interface *ifp)
 458 {
 459   struct listnode *node;
 460   struct listnode *next;
 461   struct connected *ifc;
 462   struct prefix *p;
 463
 464   /* Notify to the protocol daemons. */
 465   zebra_interface_down_update (ifp);
 466
 467   /* Delete connected routes from the kernel. */
 468   if (ifp->connected)
 469     {
 470       for (node = listhead (ifp->connected); node; node = next)
 471         {
 472           next = node->next;
 473           ifc = getdata (node);
 474           p = ifc->address;
 475
 476           if (p->family == AF_INET)
 477             connected_down_ipv4 (ifp, ifc);
 478 #ifdef HAVE_IPV6
 479           else if (p->family == AF_INET6)
 480             connected_down_ipv6 (ifp, ifc);
 481 #endif /* HAVE_IPV6 */
 482         }
 483     }
 484
 485   /* Examine all static routes which direct to the interface. */
 486   rib_update ();
 487 }
 488
 489 void
 490 if_refresh (struct interface *ifp)
 491 {
 492   if (if_is_operative (ifp))
 493     {
 494       if_get_flags (ifp);
 495       if (! if_is_operative (ifp))
 496         if_down (ifp);
 497     }
 498   else
 499     {
 500       if_get_flags (ifp);
 501       if (if_is_operative (ifp))
 502         if_up (ifp);
 503     }
 504 }
 505
 506 /* Printout flag information into vty */
 507 void
 508 if_flag_dump_vty (struct vty *vty, unsigned long flag)
 509 {
 510   int separator = 0;
 511
 512 #define IFF_OUT_VTY(X, Y) \
 513   if ((X) && (flag & (X))) \
 514     { \
 515       if (separator) \
 516         vty_out (vty, ","); \
 517       else \
 518         separator = 1; \
 519       vty_out (vty, Y); \
 520     }
 521
 522   vty_out (vty, "<");
 523   IFF_OUT_VTY (IFF_UP, "UP");
 524   IFF_OUT_VTY (IFF_BROADCAST, "BROADCAST");
 525   IFF_OUT_VTY (IFF_DEBUG, "DEBUG");
 526   IFF_OUT_VTY (IFF_LOOPBACK, "LOOPBACK");
 527   IFF_OUT_VTY (IFF_POINTOPOINT, "POINTOPOINT");
 528   IFF_OUT_VTY (IFF_NOTRAILERS, "NOTRAILERS");
 529   IFF_OUT_VTY (IFF_RUNNING, "RUNNING");
 530   IFF_OUT_VTY (IFF_NOARP, "NOARP");
 531   IFF_OUT_VTY (IFF_PROMISC, "PROMISC");
 532   IFF_OUT_VTY (IFF_ALLMULTI, "ALLMULTI");
 533   IFF_OUT_VTY (IFF_OACTIVE, "OACTIVE");
 534   IFF_OUT_VTY (IFF_SIMPLEX, "SIMPLEX");
 535   IFF_OUT_VTY (IFF_LINK0, "LINK0");
 536   IFF_OUT_VTY (IFF_LINK1, "LINK1");
 537   IFF_OUT_VTY (IFF_LINK2, "LINK2");
 538   IFF_OUT_VTY (IFF_MULTICAST, "MULTICAST");
 539 #ifdef SOLARIS_IPV6
 540   IFF_OUT_VTY (IFF_IPV4, "IFF_IPv4");
 541   IFF_OUT_VTY (IFF_IPV6, "IFF_IPv6");
 542 #endif /* SOLARIS_IPV6 */
 543   vty_out (vty, ">");
 544 }
 545
 546 /* Output prefix string to vty. */
 547 int
 548 prefix_vty_out (struct vty *vty, struct prefix *p)
 549 {
 550   char str[INET6_ADDRSTRLEN];
 551
 552   inet_ntop (p->family, &p->u.prefix, str, sizeof (str));
 553   vty_out (vty, "%s", str);
 554   return strlen (str);
 555 }
 556
 557 /* Dump if address information to vty. */
 558 void
 559 connected_dump_vty (struct vty *vty, struct connected *connected)
 560 {
 561   struct prefix *p;
 562   struct interface *ifp;
 563
 564   /* Set interface pointer. */
 565   ifp = connected->ifp;
 566
 567   /* Print interface address. */
 568   p = connected->address;
 569   vty_out (vty, "  %s ", prefix_family_str (p));
 570   prefix_vty_out (vty, p);
 571   vty_out (vty, "/%d", p->prefixlen);
 572
 573   /* If there is destination address, print it. */
 574   p = connected->destination;
 575   if (p)
 576     {
 577       if (p->family == AF_INET)
 578         if (ifp->flags & IFF_BROADCAST)
 579           {
 580             vty_out (vty, " broadcast ");
 581             prefix_vty_out (vty, p);
 582           }
 583
 584       if (ifp->flags & IFF_POINTOPOINT)
 585         {
 586           vty_out (vty, " pointopoint ");
 587           prefix_vty_out (vty, p);
 588         }
 589     }
 590
 591   if (CHECK_FLAG (connected->flags, ZEBRA_IFA_SECONDARY))
 592     vty_out (vty, " secondary");
 593
 594   if (connected->label)
 595     vty_out (vty, " %s", connected->label);
 596
 597   vty_out (vty, "%s", VTY_NEWLINE);
 598 }
 599
 600 #ifdef RTADV
 601 /* Dump interface ND information to vty. */
 602 void
 603 nd_dump_vty (struct vty *vty, struct interface *ifp)
 604 {
 605   struct zebra_if *zif;
 606   struct rtadvconf *rtadv;
 607
 608   zif = (struct zebra_if *) ifp->info;
 609   rtadv = &zif->rtadv;
 610
 611   if (rtadv->AdvSendAdvertisements)
 612     {
 613       vty_out (vty, "  ND advertised reachable time is %d milliseconds%s",
 614                rtadv->AdvReachableTime, VTY_NEWLINE);
 615       vty_out (vty, "  ND advertised retransmit interval is %d milliseconds%s",
 616                rtadv->AdvRetransTimer, VTY_NEWLINE);
 617       vty_out (vty, "  ND router advertisements are sent every %d seconds%s",
 618                rtadv->MaxRtrAdvInterval, VTY_NEWLINE);
 619       vty_out (vty, "  ND router advertisements live for %d seconds%s",
 620                rtadv->AdvDefaultLifetime, VTY_NEWLINE);
 621       if (rtadv->AdvManagedFlag)
 622         vty_out (vty, "  Hosts use DHCP to obtain routable addresses.%s",
 623                  VTY_NEWLINE);
 624       else
 625         vty_out (vty, "  Hosts use stateless autoconfig for addresses.%s",
 626                  VTY_NEWLINE);
 627     }
 628 }
 629 #endif /* RTADV */
 630
 631 /* Interface's information print out to vty interface. */
 632 void
 633 if_dump_vty (struct vty *vty, struct interface *ifp)
 634 {
 635 #ifdef HAVE_SOCKADDR_DL
 636   struct sockaddr_dl *sdl;
 637 #endif /* HAVE_SOCKADDR_DL */
 638   struct connected *connected;
 639   struct listnode *node;
 640   struct route_node *rn;
 641   struct zebra_if *zebra_if;
 642
 643   zebra_if = ifp->info;
 644
 645   vty_out (vty, "Interface %s is ", ifp->name);
 646   if (if_is_up(ifp)) {
 647     vty_out (vty, "up, line protocol ");
 648
 649     if (CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_LINKDETECTION)) {
 650       if (if_is_running(ifp))
 651        vty_out (vty, "is up%s", VTY_NEWLINE);
 652       else
 653         vty_out (vty, "is down%s", VTY_NEWLINE);
 654     } else {
 655       vty_out (vty, "detection is disabled%s", VTY_NEWLINE);
 656     }
 657   } else {
 658     vty_out (vty, "down%s", VTY_NEWLINE);
 659   }
 660
 661   if (ifp->desc)
 662     vty_out (vty, "  Description: %s%s", ifp->desc,
 663              VTY_NEWLINE);
 664   if (ifp->ifindex <= 0)
 665     {
 666       vty_out(vty, "  index %d pseudo interface%s", ifp->ifindex, VTY_NEWLINE);
 667       return;
 668     }
 669   else if (! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))
 670     {
 671       vty_out(vty, "  index %d inactive interface%s",
 672               ifp->ifindex,
 673               VTY_NEWLINE);
 674       return;
 675     }
 676
 677   vty_out (vty, "  index %d metric %d mtu %d ",
 678            ifp->ifindex, ifp->metric, ifp->mtu);
 679   if_flag_dump_vty (vty, ifp->flags);
 680 #ifdef HAVE_IPV6
 681   if (ifp->mtu6 != ifp->mtu)
 682     vty_out (vty, "mtu6 %d ", ifp->mtu6);
 683 #endif
 684
 685   vty_out (vty, "%s", VTY_NEWLINE);
 686
 687   /* Hardware address. */
 688 #ifdef HAVE_SOCKADDR_DL
 689   sdl = &ifp->sdl;
 690   if (sdl != NULL && sdl->sdl_alen != 0)
 691     {
 692       int i;
 693       u_char *ptr;
 694
 695       vty_out (vty, "  HWaddr: ");
 696       for (i = 0, ptr = (u_char *)LLADDR (sdl); i < sdl->sdl_alen; i++, ptr++)
 697         vty_out (vty, "%s%02x", i == 0 ? "" : ":", *ptr);
 698       vty_out (vty, "%s", VTY_NEWLINE);
 699     }
 700 #else
 701   if (ifp->hw_addr_len != 0)
 702     {
 703       int i;
 704
 705       vty_out (vty, "  HWaddr: ");
 706       for (i = 0; i < ifp->hw_addr_len; i++)
 707         vty_out (vty, "%s%02x", i == 0 ? "" : ":", ifp->hw_addr[i]);
 708       vty_out (vty, "%s", VTY_NEWLINE);
 709     }
 710 #endif /* HAVE_SOCKADDR_DL */
 711
 712   /* Bandwidth in kbps */
 713   if (ifp->bandwidth != 0)
 714     {
 715       vty_out(vty, "  bandwidth %u kbps", ifp->bandwidth);
 716       vty_out(vty, "%s", VTY_NEWLINE);
 717     }
 718
 719   for (rn = route_top (zebra_if->ipv4_subnets); rn; rn = route_next (rn))
 720     {
 721       if (! rn->info)
 722         continue;
 723
 724       for (node = listhead ((struct list *) rn->info); node; nextnode (node))
 725         {
 726           connected = getdata (node);
 727           connected_dump_vty (vty, connected);
 728         }
 729     }
 730
 731   for (node = listhead (ifp->connected); node; nextnode (node))
 732     {
 733       connected = getdata (node);
 734       if (CHECK_FLAG (connected->conf, ZEBRA_IFC_REAL) &&
 735           (connected->address->family == AF_INET6))
 736         connected_dump_vty (vty, connected);
 737     }
 738
 739 #ifdef RTADV
 740   nd_dump_vty (vty, ifp);
 741 #endif /* RTADV */
 742
 743 #ifdef HAVE_PROC_NET_DEV
 744   /* Statistics print out using proc file system. */
 745   vty_out (vty, "    input packets %lu, bytes %lu, dropped %lu,"
 746            " multicast packets %lu%s",
 747            ifp->stats.rx_packets, ifp->stats.rx_bytes,
 748            ifp->stats.rx_dropped, ifp->stats.rx_multicast, VTY_NEWLINE);
 749
 750   vty_out (vty, "    input errors %lu, length %lu, overrun %lu,"
 751            " CRC %lu, frame %lu, fifo %lu, missed %lu%s",
 752            ifp->stats.rx_errors, ifp->stats.rx_length_errors,
 753            ifp->stats.rx_over_errors, ifp->stats.rx_crc_errors,
 754            ifp->stats.rx_frame_errors, ifp->stats.rx_fifo_errors,
 755            ifp->stats.rx_missed_errors, VTY_NEWLINE);
 756
 757   vty_out (vty, "    output packets %lu, bytes %lu, dropped %lu%s",
 758            ifp->stats.tx_packets, ifp->stats.tx_bytes,
 759            ifp->stats.tx_dropped, VTY_NEWLINE);
 760
 761   vty_out (vty, "    output errors %lu, aborted %lu, carrier %lu,"
 762            " fifo %lu, heartbeat %lu, window %lu%s",
 763            ifp->stats.tx_errors, ifp->stats.tx_aborted_errors,
 764            ifp->stats.tx_carrier_errors, ifp->stats.tx_fifo_errors,
 765            ifp->stats.tx_heartbeat_errors, ifp->stats.tx_window_errors,
 766            VTY_NEWLINE);
 767
 768   vty_out (vty, "    collisions %lu%s", ifp->stats.collisions, VTY_NEWLINE);
 769 #endif /* HAVE_PROC_NET_DEV */
 770
 771 #ifdef HAVE_NET_RT_IFLIST
 772 #if defined (__bsdi__) || defined (__NetBSD__)
 773   /* Statistics print out using sysctl (). */
 774   vty_out (vty, "    input packets %qu, bytes %qu, dropped %qu,"
 775            " multicast packets %qu%s",
 776            ifp->stats.ifi_ipackets, ifp->stats.ifi_ibytes,
 777            ifp->stats.ifi_iqdrops, ifp->stats.ifi_imcasts,
 778            VTY_NEWLINE);
 779
 780   vty_out (vty, "    input errors %qu%s",
 781            ifp->stats.ifi_ierrors, VTY_NEWLINE);
 782
 783   vty_out (vty, "    output packets %qu, bytes %qu, multicast packets %qu%s",
 784            ifp->stats.ifi_opackets, ifp->stats.ifi_obytes,
 785            ifp->stats.ifi_omcasts, VTY_NEWLINE);
 786
 787   vty_out (vty, "    output errors %qu%s",
 788            ifp->stats.ifi_oerrors, VTY_NEWLINE);
 789
 790   vty_out (vty, "    collisions %qu%s",
 791            ifp->stats.ifi_collisions, VTY_NEWLINE);
 792 #else
 793   /* Statistics print out using sysctl (). */
 794   vty_out (vty, "    input packets %lu, bytes %lu, dropped %lu,"
 795            " multicast packets %lu%s",
 796            ifp->stats.ifi_ipackets, ifp->stats.ifi_ibytes,
 797            ifp->stats.ifi_iqdrops, ifp->stats.ifi_imcasts,
 798            VTY_NEWLINE);
 799
 800   vty_out (vty, "    input errors %lu%s",
 801            ifp->stats.ifi_ierrors, VTY_NEWLINE);
 802
 803   vty_out (vty, "    output packets %lu, bytes %lu, multicast packets %lu%s",
 804            ifp->stats.ifi_opackets, ifp->stats.ifi_obytes,
 805            ifp->stats.ifi_omcasts, VTY_NEWLINE);
 806
 807   vty_out (vty, "    output errors %lu%s",
 808            ifp->stats.ifi_oerrors, VTY_NEWLINE);
 809
 810   vty_out (vty, "    collisions %lu%s",
 811            ifp->stats.ifi_collisions, VTY_NEWLINE);
 812 #endif /* __bsdi__ || __NetBSD__ */
 813 #endif /* HAVE_NET_RT_IFLIST */
 814 }
 815
 816 /* Check supported address family. */
 817 int
 818 if_supported_family (int family)
 819 {
 820   if (family == AF_INET)
 821     return 1;
 822 #ifdef HAVE_IPV6
 823   if (family == AF_INET6)
 824     return 1;
 825 #endif /* HAVE_IPV6 */
 826   return 0;
 827 }
 828
 829 /* Wrapper hook point for zebra daemon so that ifindex can be set
 830  * DEFUN macro not used as extract.pl HAS to ignore this
 831  * See also interface_cmd in lib/if.c
 832  */
 833 DEFUN_NOSH (zebra_interface,
 834             zebra_interface_cmd,
 835             "interface IFNAME",
 836             "Select an interface to configure\n"
 837             "Interface's name\n")
 838 {
 839   int ret;
 840   struct interface * ifp;
 841
 842   /* Call lib interface() */
 843   ret = interface_cmd.func (self, vty, argc, argv);
 844
 845   ifp = vty->index;
 846
 847   /* Set ifindex
 848      this only happens if interface is NOT in kernel */
 849   if (ifp->ifindex == 0)
 850     {
 851       ifp->ifindex = if_new_intern_ifindex ();
 852       UNSET_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE);
 853     }
 854
 855   return ret;
 856 }
 857
 858 struct cmd_node interface_node =
 859 {
 860   INTERFACE_NODE,
 861   "%s(config-if)# ",
 862   1
 863 };
 864
 865 /* Show all or specified interface to vty. */
 866 DEFUN (show_interface, show_interface_cmd,
 867        "show interface [IFNAME]",
 868        SHOW_STR
 869        "Interface status and configuration\n"
 870        "Inteface name\n")
 871 {
 872   struct listnode *node;
 873   struct interface *ifp;
 874
 875 #ifdef HAVE_PROC_NET_DEV
 876   /* If system has interface statistics via proc file system, update
 877      statistics. */
 878   ifstat_update_proc ();
 879 #endif /* HAVE_PROC_NET_DEV */
 880 #ifdef HAVE_NET_RT_IFLIST
 881   ifstat_update_sysctl ();
 882 #endif /* HAVE_NET_RT_IFLIST */
 883
 884   /* Specified interface print. */
 885   if (argc != 0)
 886     {
 887       ifp = if_lookup_by_name (argv[0]);
 888       if (ifp == NULL)
 889         {
 890           vty_out (vty, "%% Can't find interface %s%s", argv[0],
 891                    VTY_NEWLINE);
 892           return CMD_WARNING;
 893         }
 894       if_dump_vty (vty, ifp);
 895       return CMD_SUCCESS;
 896     }
 897
 898   /* All interface print. */
 899   for (node = listhead (iflist); node; nextnode (node))
 900     if_dump_vty (vty, getdata (node));
 901
 902   return CMD_SUCCESS;
 903 }
 904
 905 DEFUN (multicast,
 906        multicast_cmd,
 907        "multicast",
 908        "Set multicast flag to interface\n")
 909 {
 910   int ret;
 911   struct interface *ifp;
 912   struct zebra_if *if_data;
 913
 914   ifp = (struct interface *) vty->index;
 915   if (CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))
 916     {
 917       ret = if_set_flags (ifp, IFF_MULTICAST);
 918       if (ret < 0)
 919         {
 920           vty_out (vty, "Can't set multicast flag%s", VTY_NEWLINE);
 921           return CMD_WARNING;
 922         }
 923       if_refresh (ifp);
 924     }
 925   if_data = ifp->info;
 926   if_data->multicast = IF_ZEBRA_MULTICAST_ON;
 927
 928   return CMD_SUCCESS;
 929 }
 930
 931 DEFUN (no_multicast,
 932        no_multicast_cmd,
 933        "no multicast",
 934        NO_STR
 935        "Unset multicast flag to interface\n")
 936 {
 937   int ret;
 938   struct interface *ifp;
 939   struct zebra_if *if_data;
 940
 941   ifp = (struct interface *) vty->index;
 942   if (CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))
 943     {
 944       ret = if_unset_flags (ifp, IFF_MULTICAST);
 945       if (ret < 0)
 946         {
 947           vty_out (vty, "Can't unset multicast flag%s", VTY_NEWLINE);
 948           return CMD_WARNING;
 949         }
 950       if_refresh (ifp);
 951     }
 952   if_data = ifp->info;
 953   if_data->multicast = IF_ZEBRA_MULTICAST_OFF;
 954
 955   return CMD_SUCCESS;
 956 }
 957
 958 DEFUN (linkdetect,
 959        linkdetect_cmd,
 960        "link-detect",
 961        "Enable link detection on interface\n")
 962 {
 963   struct interface *ifp;
 964   int if_was_operative;
 965
 966   ifp = (struct interface *) vty->index;
 967   if_was_operative = if_is_operative(ifp);
 968   SET_FLAG(ifp->status, ZEBRA_INTERFACE_LINKDETECTION);
 969
 970   /* When linkdetection is enabled, if might come down */
 971   if (!if_is_operative(ifp) && if_was_operative) if_down(ifp);
 972
 973   /* FIXME: Will defer status change forwarding if interface
 974      does not come down! */
 975
 976   return CMD_SUCCESS;
 977 }
 978
 979
 980 DEFUN (no_linkdetect,
 981        no_linkdetect_cmd,
 982        "no link-detect",
 983        NO_STR
 984        "Disable link detection on interface\n")
 985 {
 986   struct interface *ifp;
 987   int if_was_operative;
 988
 989   ifp = (struct interface *) vty->index;
 990   if_was_operative = if_is_operative(ifp);
 991   UNSET_FLAG(ifp->status, ZEBRA_INTERFACE_LINKDETECTION);
 992
 993   /* Interface may come up after disabling link detection */
 994   if (if_is_operative(ifp) && !if_was_operative) if_up(ifp);
 995
 996   /* FIXME: see linkdetect_cmd */
 997
 998   return CMD_SUCCESS;
 999 }
1000
1001 DEFUN (shutdown_if,
1002        shutdown_if_cmd,
1003        "shutdown",
1004        "Shutdown the selected interface\n")
1005 {
1006   int ret;
1007   struct interface *ifp;
1008   struct zebra_if *if_data;
1009
1010   ifp = (struct interface *) vty->index;
1011   ret = if_unset_flags (ifp, IFF_UP);
1012   if (ret < 0)
1013     {
1014       vty_out (vty, "Can't shutdown interface%s", VTY_NEWLINE);
1015       return CMD_WARNING;
1016     }
1017   if_refresh (ifp);
1018   if_data = ifp->info;
1019   if_data->shutdown = IF_ZEBRA_SHUTDOWN_ON;
1020
1021   return CMD_SUCCESS;
1022 }
1023
1024 DEFUN (no_shutdown_if,
1025        no_shutdown_if_cmd,
1026        "no shutdown",
1027        NO_STR
1028        "Shutdown the selected interface\n")
1029 {
1030   int ret;
1031   struct interface *ifp;
1032   struct zebra_if *if_data;
1033
1034   ifp = (struct interface *) vty->index;
1035   ret = if_set_flags (ifp, IFF_UP | IFF_RUNNING);
1036   if (ret < 0)
1037     {
1038       vty_out (vty, "Can't up interface%s", VTY_NEWLINE);
1039       return CMD_WARNING;
1040     }
1041   if_refresh (ifp);
1042   if_data = ifp->info;
1043   if_data->shutdown = IF_ZEBRA_SHUTDOWN_OFF;
1044
1045   return CMD_SUCCESS;
1046 }
1047
1048 DEFUN (bandwidth_if,
1049        bandwidth_if_cmd,
1050        "bandwidth <1-10000000>",
1051        "Set bandwidth informational parameter\n"
1052        "Bandwidth in kilobits\n")
1053 {
1054   struct interface *ifp;
1055   unsigned int bandwidth;
1056
1057   ifp = (struct interface *) vty->index;
1058   bandwidth = strtol(argv[0], NULL, 10);
1059
1060   /* bandwidth range is <1-10000000> */
1061   if (bandwidth < 1 || bandwidth > 10000000)
1062     {
1063       vty_out (vty, "Bandwidth is invalid%s", VTY_NEWLINE);
1064       return CMD_WARNING;
1065     }
1066
1067   ifp->bandwidth = bandwidth;
1068
1069   /* force protocols to recalculate routes due to cost change */
1070   if (if_is_operative (ifp))
1071     zebra_interface_up_update (ifp);
1072
1073   return CMD_SUCCESS;
1074 }
1075
1076 DEFUN (no_bandwidth_if,
1077        no_bandwidth_if_cmd,
1078        "no bandwidth",
1079        NO_STR
1080        "Set bandwidth informational parameter\n")
1081 {
1082   struct interface *ifp;
1083
1084   ifp = (struct interface *) vty->index;
1085
1086   ifp->bandwidth = 0;
1087
1088   /* force protocols to recalculate routes due to cost change */
1089   if (if_is_operative (ifp))
1090     zebra_interface_up_update (ifp);
1091
1092   return CMD_SUCCESS;
1093 }
1094
1095 ALIAS (no_bandwidth_if,
1096        no_bandwidth_if_val_cmd,
1097        "no bandwidth <1-10000000>",
1098        NO_STR
1099        "Set bandwidth informational parameter\n"
1100        "Bandwidth in kilobits\n")
1101 \f
1102 int
1103 ip_address_install (struct vty *vty, struct interface *ifp,
1104                     const char *addr_str, const char *peer_str,
1105                     const char *label)
1106 {
1107   struct prefix_ipv4 cp;
1108   struct connected *ifc;
1109   struct prefix_ipv4 *p;
1110   struct in_addr mask;
1111   int ret;
1112
1113   ret = str2prefix_ipv4 (addr_str, &cp);
1114   if (ret <= 0)
1115     {
1116       vty_out (vty, "%% Malformed address %s", VTY_NEWLINE);
1117       return CMD_WARNING;
1118     }
1119
1120   ifc = connected_check_ipv4 (ifp, (struct prefix *) &cp);
1121   if (! ifc)
1122     {
1123       ifc = connected_new ();
1124       ifc->ifp = ifp;
1125
1126       /* Address. */
1127       p = prefix_ipv4_new ();
1128       *p = cp;
1129       ifc->address = (struct prefix *) p;
1130
1131       /* Broadcast. */
1132       if (p->prefixlen <= 30)
1133         {
1134           p = prefix_ipv4_new ();
1135           *p = cp;
1136           masklen2ip (p->prefixlen, &mask);
1137           p->prefix.s_addr |= ~mask.s_addr;
1138           ifc->destination = (struct prefix *) p;
1139         }
1140
1141       /* Label. */
1142       if (label)
1143         ifc->label = strdup (label);
1144
1145       /* Add to linked list. */
1146       listnode_add (ifp->connected, ifc);
1147     }
1148
1149   /* This address is configured from zebra. */
1150   if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED))
1151     SET_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED);
1152
1153   /* In case of this route need to install kernel. */
1154   if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)
1155       && CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))
1156     {
1157       /* Some system need to up the interface to set IP address. */
1158       if (! if_is_up (ifp))
1159         {
1160           if_set_flags (ifp, IFF_UP | IFF_RUNNING);
1161           if_refresh (ifp);
1162         }
1163
1164       ret = if_set_prefix (ifp, ifc);
1165       if (ret < 0)
1166         {
1167           vty_out (vty, "%% Can't set interface IP address: %s.%s",
1168                    strerror(errno), VTY_NEWLINE);
1169           return CMD_WARNING;
1170         }
1171
1172       /* Add to subnet chain list (while marking secondary attribute). */
1173       if_subnet_add (ifp, ifc);
1174
1175       /* IP address propery set. */
1176       SET_FLAG (ifc->conf, ZEBRA_IFC_REAL);
1177
1178       /* Update interface address information to protocol daemon. */
1179       zebra_interface_address_add_update (ifp, ifc);
1180
1181       /* If interface is up register connected route. */
1182       if (if_is_operative(ifp))
1183         connected_up_ipv4 (ifp, ifc);
1184     }
1185
1186   return CMD_SUCCESS;
1187 }
1188
1189 int
1190 ip_address_uninstall (struct vty *vty, struct interface *ifp,
1191                       const char *addr_str, const char *peer_str,
1192                       const char *label)
1193 {
1194   struct prefix_ipv4 cp;
1195   struct connected *ifc;
1196   int ret;
1197
1198   /* Convert to prefix structure. */
1199   ret = str2prefix_ipv4 (addr_str, &cp);
1200   if (ret <= 0)
1201     {
1202       vty_out (vty, "%% Malformed address %s", VTY_NEWLINE);
1203       return CMD_WARNING;
1204     }
1205
1206   /* Check current interface address. */
1207   ifc = connected_check_ipv4 (ifp, (struct prefix *) &cp);
1208   if (! ifc)
1209     {
1210       vty_out (vty, "%% Can't find address%s", VTY_NEWLINE);
1211       return CMD_WARNING;
1212     }
1213
1214   /* This is not configured address. */
1215   if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED))
1216     return CMD_WARNING;
1217
1218   /* This is not real address or interface is not active. */
1219   if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)
1220       || ! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))
1221     {
1222       listnode_delete (ifp->connected, ifc);
1223       connected_free (ifc);
1224       return CMD_WARNING;
1225     }
1226
1227   /* This is real route. */
1228   ret = if_unset_prefix (ifp, ifc);
1229   if (ret < 0)
1230     {
1231       vty_out (vty, "%% Can't unset interface IP address: %s.%s",
1232                strerror(errno), VTY_NEWLINE);
1233       return CMD_WARNING;
1234     }
1235
1236 #if 0
1237   /* Redistribute this information. */
1238   zebra_interface_address_delete_update (ifp, ifc);
1239
1240   /* Remove connected route. */
1241   connected_down_ipv4 (ifp, ifc);
1242
1243   /* Free address information. */
1244   listnode_delete (ifp->connected, ifc);
1245   connected_free (ifc);
1246 #endif
1247
1248   return CMD_SUCCESS;
1249 }
1250
1251 DEFUN (ip_address,
1252        ip_address_cmd,
1253        "ip address A.B.C.D/M",
1254        "Interface Internet Protocol config commands\n"
1255        "Set the IP address of an interface\n"
1256        "IP address (e.g. 10.0.0.1/8)\n")
1257 {
1258   return ip_address_install (vty, vty->index, argv[0], NULL, NULL);
1259 }
1260
1261 DEFUN (no_ip_address,
1262        no_ip_address_cmd,
1263        "no ip address A.B.C.D/M",
1264        NO_STR
1265        "Interface Internet Protocol config commands\n"
1266        "Set the IP address of an interface\n"
1267        "IP Address (e.g. 10.0.0.1/8)")
1268 {
1269   return ip_address_uninstall (vty, vty->index, argv[0], NULL, NULL);
1270 }
1271
1272 #ifdef HAVE_NETLINK
1273 DEFUN (ip_address_label,
1274        ip_address_label_cmd,
1275        "ip address A.B.C.D/M label LINE",
1276        "Interface Internet Protocol config commands\n"
1277        "Set the IP address of an interface\n"
1278        "IP address (e.g. 10.0.0.1/8)\n"
1279        "Label of this address\n"
1280        "Label\n")
1281 {
1282   return ip_address_install (vty, vty->index, argv[0], NULL, argv[1]);
1283 }
1284
1285 DEFUN (no_ip_address_label,
1286        no_ip_address_label_cmd,
1287        "no ip address A.B.C.D/M label LINE",
1288        NO_STR
1289        "Interface Internet Protocol config commands\n"
1290        "Set the IP address of an interface\n"
1291        "IP address (e.g. 10.0.0.1/8)\n"
1292        "Label of this address\n"
1293        "Label\n")
1294 {
1295   return ip_address_uninstall (vty, vty->index, argv[0], NULL, argv[1]);
1296 }
1297 #endif /* HAVE_NETLINK */
1298
1299 #ifdef HAVE_IPV6
1300 int
1301 ipv6_address_install (struct vty *vty, struct interface *ifp,
1302                       const char *addr_str, const char *peer_str,
1303                       const char *label, int secondary)
1304 {
1305   struct prefix_ipv6 cp;
1306   struct connected *ifc;
1307   struct prefix_ipv6 *p;
1308   int ret;
1309
1310   ret = str2prefix_ipv6 (addr_str, &cp);
1311   if (ret <= 0)
1312     {
1313       vty_out (vty, "%% Malformed address %s", VTY_NEWLINE);
1314       return CMD_WARNING;
1315     }
1316
1317   ifc = connected_check_ipv6 (ifp, (struct prefix *) &cp);
1318   if (! ifc)
1319     {
1320       ifc = connected_new ();
1321       ifc->ifp = ifp;
1322
1323       /* Address. */
1324       p = prefix_ipv6_new ();
1325       *p = cp;
1326       ifc->address = (struct prefix *) p;
1327
1328       /* Secondary. */
1329       if (secondary)
1330         SET_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY);
1331
1332       /* Label. */
1333       if (label)
1334         ifc->label = strdup (label);
1335
1336       /* Add to linked list. */
1337       listnode_add (ifp->connected, ifc);
1338     }
1339
1340   /* This address is configured from zebra. */
1341   if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED))
1342     SET_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED);
1343
1344   /* In case of this route need to install kernel. */
1345   if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)
1346       && CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))
1347     {
1348       /* Some system need to up the interface to set IP address. */
1349       if (! if_is_up (ifp))
1350         {
1351           if_set_flags (ifp, IFF_UP | IFF_RUNNING);
1352           if_refresh (ifp);
1353         }
1354
1355       ret = if_prefix_add_ipv6 (ifp, ifc);
1356
1357       if (ret < 0)
1358         {
1359           vty_out (vty, "%% Can't set interface IP address: %s.%s",
1360                    strerror(errno), VTY_NEWLINE);
1361           return CMD_WARNING;
1362         }
1363
1364       /* IP address propery set. */
1365       SET_FLAG (ifc->conf, ZEBRA_IFC_REAL);
1366
1367       /* Update interface address information to protocol daemon. */
1368       zebra_interface_address_add_update (ifp, ifc);
1369
1370       /* If interface is up register connected route. */
1371       if (if_is_operative(ifp))
1372         connected_up_ipv6 (ifp, ifc);
1373     }
1374
1375   return CMD_SUCCESS;
1376 }
1377
1378 int
1379 ipv6_address_uninstall (struct vty *vty, struct interface *ifp,
1380                         const char *addr_str, const char *peer_str,
1381                         const char *label, int secondry)
1382 {
1383   struct prefix_ipv6 cp;
1384   struct connected *ifc;
1385   int ret;
1386
1387   /* Convert to prefix structure. */
1388   ret = str2prefix_ipv6 (addr_str, &cp);
1389   if (ret <= 0)
1390     {
1391       vty_out (vty, "%% Malformed address %s", VTY_NEWLINE);
1392       return CMD_WARNING;
1393     }
1394
1395   /* Check current interface address. */
1396   ifc = connected_check_ipv6 (ifp, (struct prefix *) &cp);
1397   if (! ifc)
1398     {
1399       vty_out (vty, "%% Can't find address%s", VTY_NEWLINE);
1400       return CMD_WARNING;
1401     }
1402
1403   /* This is not configured address. */
1404   if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED))
1405     return CMD_WARNING;
1406
1407   /* This is not real address or interface is not active. */
1408   if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)
1409       || ! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))
1410     {
1411       listnode_delete (ifp->connected, ifc);
1412       connected_free (ifc);
1413       return CMD_WARNING;
1414     }
1415
1416   /* This is real route. */
1417   ret = if_prefix_delete_ipv6 (ifp, ifc);
1418   if (ret < 0)
1419     {
1420       vty_out (vty, "%% Can't unset interface IP address: %s.%s",
1421                strerror(errno), VTY_NEWLINE);
1422       return CMD_WARNING;
1423     }
1424
1425   /* Redistribute this information. */
1426   zebra_interface_address_delete_update (ifp, ifc);
1427
1428   /* Remove connected route. */
1429   connected_down_ipv6 (ifp, ifc);
1430
1431   /* Free address information. */
1432   listnode_delete (ifp->connected, ifc);
1433   connected_free (ifc);
1434
1435   return CMD_SUCCESS;
1436 }
1437
1438 DEFUN (ipv6_address,
1439        ipv6_address_cmd,
1440        "ipv6 address X:X::X:X/M",
1441        "Interface IPv6 config commands\n"
1442        "Set the IP address of an interface\n"
1443        "IPv6 address (e.g. 3ffe:506::1/48)\n")
1444 {
1445   return ipv6_address_install (vty, vty->index, argv[0], NULL, NULL, 0);
1446 }
1447
1448 DEFUN (no_ipv6_address,
1449        no_ipv6_address_cmd,
1450        "no ipv6 address X:X::X:X/M",
1451        NO_STR
1452        "Interface IPv6 config commands\n"
1453        "Set the IP address of an interface\n"
1454        "IPv6 address (e.g. 3ffe:506::1/48)\n")
1455 {
1456   return ipv6_address_uninstall (vty, vty->index, argv[0], NULL, NULL, 0);
1457 }
1458 #endif /* HAVE_IPV6 */
1459
1460 #ifdef KAME
1461 DEFUN (ip_tunnel,
1462        ip_tunnel_cmd,
1463        "ip tunnel IP_address IP_address",
1464        "KAME ip tunneling configuration commands\n"
1465        "Set FROM IP address and TO IP address\n")
1466 {
1467   return CMD_SUCCESS;
1468 }
1469
1470 DEFUN (no_ip_tunnel, no_ip_tunnel_cmd,
1471        "no ip tunnel",
1472        NO_STR
1473        "Set FROM IP address and TO IP address\n")
1474 {
1475   return CMD_SUCCESS;
1476 }
1477 #endif /* KAME */
1478
1479 int
1480 if_config_write (struct vty *vty)
1481 {
1482   struct listnode *node;
1483   struct interface *ifp;
1484   char buf[BUFSIZ];
1485
1486   for (node = listhead (iflist); node; nextnode (node))
1487     {
1488       struct zebra_if *if_data;
1489       struct listnode *addrnode;
1490       struct connected *ifc;
1491       struct prefix *p;
1492
1493       ifp = getdata (node);
1494       if_data = ifp->info;
1495
1496       vty_out (vty, "interface %s%s", ifp->name,
1497                VTY_NEWLINE);
1498
1499       if (ifp->desc)
1500         vty_out (vty, " description %s%s", ifp->desc,
1501                  VTY_NEWLINE);
1502
1503       /* Assign bandwidth here to avoid unnecessary interface flap
1504          while processing config script */
1505       if (ifp->bandwidth != 0)
1506         vty_out(vty, " bandwidth %u%s", ifp->bandwidth, VTY_NEWLINE);
1507
1508       if (CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_LINKDETECTION))
1509         vty_out(vty, " link-detect%s", VTY_NEWLINE);
1510
1511       for (addrnode = listhead (ifp->connected); addrnode; nextnode (addrnode))
1512           {
1513             ifc = getdata (addrnode);
1514             if (CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED))
1515               {
1516                 p = ifc->address;
1517                 vty_out (vty, " ip%s address %s/%d",
1518                          p->family == AF_INET ? "" : "v6",
1519                          inet_ntop (p->family, &p->u.prefix, buf, BUFSIZ),
1520                          p->prefixlen);
1521
1522                 if (ifc->label)
1523                   vty_out (vty, " label %s", ifc->label);
1524
1525                 vty_out (vty, "%s", VTY_NEWLINE);
1526               }
1527           }
1528
1529       if (if_data)
1530         {
1531           if (if_data->shutdown == IF_ZEBRA_SHUTDOWN_ON)
1532             vty_out (vty, " shutdown%s", VTY_NEWLINE);
1533
1534           if (if_data->multicast != IF_ZEBRA_MULTICAST_UNSPEC)
1535             vty_out (vty, " %smulticast%s",
1536                      if_data->multicast == IF_ZEBRA_MULTICAST_ON ? "" : "no ",
1537                      VTY_NEWLINE);
1538         }
1539
1540 #ifdef RTADV
1541       rtadv_config_write (vty, ifp);
1542 #endif /* RTADV */
1543
1544 #ifdef HAVE_IRDP
1545       irdp_config_write (vty, ifp);
1546 #endif /* IRDP */
1547
1548       vty_out (vty, "!%s", VTY_NEWLINE);
1549     }
1550   return 0;
1551 }
1552
1553 /* Allocate and initialize interface vector. */
1554 void
1555 zebra_if_init ()
1556 {
1557   /* Initialize interface and new hook. */
1558   if_init ();
1559   if_add_hook (IF_NEW_HOOK, if_zebra_new_hook);
1560   if_add_hook (IF_DELETE_HOOK, if_zebra_delete_hook);
1561
1562   /* Install configuration write function. */
1563   install_node (&interface_node, if_config_write);
1564
1565   install_element (VIEW_NODE, &show_interface_cmd);
1566   install_element (ENABLE_NODE, &show_interface_cmd);
1567   install_element (CONFIG_NODE, &zebra_interface_cmd);
1568   install_element (CONFIG_NODE, &no_interface_cmd);
1569   install_default (INTERFACE_NODE);
1570   install_element (INTERFACE_NODE, &interface_desc_cmd);
1571   install_element (INTERFACE_NODE, &no_interface_desc_cmd);
1572   install_element (INTERFACE_NODE, &multicast_cmd);
1573   install_element (INTERFACE_NODE, &no_multicast_cmd);
1574   install_element (INTERFACE_NODE, &linkdetect_cmd);
1575   install_element (INTERFACE_NODE, &no_linkdetect_cmd);
1576   install_element (INTERFACE_NODE, &shutdown_if_cmd);
1577   install_element (INTERFACE_NODE, &no_shutdown_if_cmd);
1578   install_element (INTERFACE_NODE, &bandwidth_if_cmd);
1579   install_element (INTERFACE_NODE, &no_bandwidth_if_cmd);
1580   install_element (INTERFACE_NODE, &no_bandwidth_if_val_cmd);
1581   install_element (INTERFACE_NODE, &ip_address_cmd);
1582   install_element (INTERFACE_NODE, &no_ip_address_cmd);
1583 #ifdef HAVE_IPV6
1584   install_element (INTERFACE_NODE, &ipv6_address_cmd);
1585   install_element (INTERFACE_NODE, &no_ipv6_address_cmd);
1586 #endif /* HAVE_IPV6 */
1587 #ifdef KAME
1588   install_element (INTERFACE_NODE, &ip_tunnel_cmd);
1589   install_element (INTERFACE_NODE, &no_ip_tunnel_cmd);
1590 #endif /* KAME */
1591 #ifdef HAVE_NETLINK
1592   install_element (INTERFACE_NODE, &ip_address_label_cmd);
1593   install_element (INTERFACE_NODE, &no_ip_address_label_cmd);
1594 #endif /* HAVE_NETLINK */
1595 }