ospf6d/ospf6_zebra.c

   1 /*
   2  * Copyright (C) 2003 Yasuhiro Ohara
   3  *
   4  * This file is part of GNU Zebra.
   5  *
   6  * GNU Zebra is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * GNU Zebra is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <zebra.h>
  22
  23 #include "log.h"
  24 #include "vty.h"
  25 #include "command.h"
  26 #include "prefix.h"
  27 #include "stream.h"
  28 #include "zclient.h"
  29 #include "memory.h"
  30 #include "lib/bfd.h"
  31
  32 #include "ospf6_proto.h"
  33 #include "ospf6_top.h"
  34 #include "ospf6_interface.h"
  35 #include "ospf6_route.h"
  36 #include "ospf6_lsa.h"
  37 #include "ospf6_lsdb.h"
  38 #include "ospf6_asbr.h"
  39 #include "ospf6_zebra.h"
  40 #include "ospf6d.h"
  41
  42 DEFINE_MTYPE_STATIC(OSPF6D, OSPF6_DISTANCE,     "OSPF6 distance")
  43
  44 unsigned char conf_debug_ospf6_zebra = 0;
  45
  46 /* information about zebra. */
  47 struct zclient *zclient = NULL;
  48
  49 struct in_addr router_id_zebra;
  50
  51 /* Router-id update message from zebra. */
  52 static int
  53 ospf6_router_id_update_zebra (int command, struct zclient *zclient,
  54                               zebra_size_t length, vrf_id_t vrf_id)
  55 {
  56   struct prefix router_id;
  57   struct ospf6 *o = ospf6;
  58
  59   zebra_router_id_update_read(zclient->ibuf,&router_id);
  60   router_id_zebra = router_id.u.prefix4;
  61
  62   if (o == NULL)
  63     return 0;
  64
  65   if (o->router_id  == 0)
  66     o->router_id = (u_int32_t) router_id_zebra.s_addr;
  67
  68   return 0;
  69 }
  70
  71 /* redistribute function */
  72 void
  73 ospf6_zebra_redistribute (int type)
  74 {
  75   if (vrf_bitmap_check (zclient->redist[AFI_IP6][type], VRF_DEFAULT))
  76     return;
  77   vrf_bitmap_set (zclient->redist[AFI_IP6][type], VRF_DEFAULT);
  78
  79   if (zclient->sock > 0)
  80     zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP6, type, 0,
  81                              VRF_DEFAULT);
  82 }
  83
  84 void
  85 ospf6_zebra_no_redistribute (int type)
  86 {
  87   if (!vrf_bitmap_check (zclient->redist[AFI_IP6][type], VRF_DEFAULT))
  88     return;
  89   vrf_bitmap_unset (zclient->redist[AFI_IP6][type], VRF_DEFAULT);
  90   if (zclient->sock > 0)
  91     zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, AFI_IP6, type,
  92                              0, VRF_DEFAULT);
  93 }
  94
  95 /* Inteface addition message from zebra. */
  96 static int
  97 ospf6_zebra_if_add (int command, struct zclient *zclient, zebra_size_t length,
  98     vrf_id_t vrf_id)
  99 {
 100   struct interface *ifp;
 101
 102   ifp = zebra_interface_add_read (zclient->ibuf, vrf_id);
 103   if (IS_OSPF6_DEBUG_ZEBRA (RECV))
 104     zlog_debug ("Zebra Interface add: %s index %d mtu %d",
 105                 ifp->name, ifp->ifindex, ifp->mtu6);
 106   ospf6_interface_if_add (ifp);
 107   return 0;
 108 }
 109
 110 static int
 111 ospf6_zebra_if_del (int command, struct zclient *zclient, zebra_size_t length,
 112     vrf_id_t vrf_id)
 113 {
 114   struct interface *ifp;
 115
 116   if (!(ifp = zebra_interface_state_read (zclient->ibuf, vrf_id)))
 117     return 0;
 118
 119   if (if_is_up (ifp))
 120     zlog_warn ("Zebra: got delete of %s, but interface is still up", ifp->name);
 121
 122   if (IS_OSPF6_DEBUG_ZEBRA (RECV))
 123     zlog_debug ("Zebra Interface delete: %s index %d mtu %d",
 124                 ifp->name, ifp->ifindex, ifp->mtu6);
 125
 126 #if 0
 127   /* XXX: ospf6_interface_if_del is not the right way to handle this,
 128    * because among other thinkable issues, it will also clear all
 129    * settings as they are contained in the struct ospf6_interface. */
 130   ospf6_interface_if_del (ifp);
 131 #endif /*0*/
 132
 133   ifp->ifindex = IFINDEX_DELETED;
 134   return 0;
 135 }
 136
 137 static int
 138 ospf6_zebra_if_state_update (int command, struct zclient *zclient,
 139                              zebra_size_t length, vrf_id_t vrf_id)
 140 {
 141   struct interface *ifp;
 142
 143   ifp = zebra_interface_state_read (zclient->ibuf, vrf_id);
 144   if (ifp == NULL)
 145     return 0;
 146
 147   if (IS_OSPF6_DEBUG_ZEBRA (RECV))
 148     zlog_debug ("Zebra Interface state change: "
 149                 "%s index %d flags %llx metric %d mtu %d bandwidth %d",
 150                 ifp->name, ifp->ifindex, (unsigned long long)ifp->flags,
 151                 ifp->metric, ifp->mtu6, ifp->bandwidth);
 152
 153   ospf6_interface_state_update (ifp);
 154   return 0;
 155 }
 156
 157 static int
 158 ospf6_zebra_if_address_update_add (int command, struct zclient *zclient,
 159                                    zebra_size_t length, vrf_id_t vrf_id)
 160 {
 161   struct connected *c;
 162   char buf[128];
 163
 164   c = zebra_interface_address_read (ZEBRA_INTERFACE_ADDRESS_ADD, zclient->ibuf,
 165                                     vrf_id);
 166   if (c == NULL)
 167     return 0;
 168
 169   if (IS_OSPF6_DEBUG_ZEBRA (RECV))
 170     zlog_debug ("Zebra Interface address add: %s %5s %s/%d",
 171                 c->ifp->name, prefix_family_str (c->address),
 172                 inet_ntop (c->address->family, &c->address->u.prefix,
 173                            buf, sizeof (buf)), c->address->prefixlen);
 174
 175   if (c->address->family == AF_INET6)
 176     {
 177       ospf6_interface_state_update (c->ifp);
 178       ospf6_interface_connected_route_update (c->ifp);
 179     }
 180   return 0;
 181 }
 182
 183 static int
 184 ospf6_zebra_if_address_update_delete (int command, struct zclient *zclient,
 185                                zebra_size_t length, vrf_id_t vrf_id)
 186 {
 187   struct connected *c;
 188   char buf[128];
 189
 190   c = zebra_interface_address_read (ZEBRA_INTERFACE_ADDRESS_DELETE, zclient->ibuf,
 191                                     vrf_id);
 192   if (c == NULL)
 193     return 0;
 194
 195   if (IS_OSPF6_DEBUG_ZEBRA (RECV))
 196     zlog_debug ("Zebra Interface address delete: %s %5s %s/%d",
 197                 c->ifp->name, prefix_family_str (c->address),
 198                 inet_ntop (c->address->family, &c->address->u.prefix,
 199                            buf, sizeof (buf)), c->address->prefixlen);
 200
 201   if (c->address->family == AF_INET6)
 202     {
 203       ospf6_interface_connected_route_update (c->ifp);
 204       ospf6_interface_state_update (c->ifp);
 205     }
 206
 207   connected_free (c);
 208
 209   return 0;
 210 }
 211
 212 static int
 213 ospf6_zebra_read_ipv6 (int command, struct zclient *zclient,
 214                        zebra_size_t length, vrf_id_t vrf_id)
 215 {
 216   struct stream *s;
 217   struct zapi_ipv6 api;
 218   unsigned long ifindex;
 219   struct prefix p, src_p;
 220   struct in6_addr *nexthop;
 221
 222   if (ospf6 == NULL)
 223     return 0;
 224
 225   s = zclient->ibuf;
 226   ifindex = 0;
 227   nexthop = NULL;
 228   memset (&api, 0, sizeof (api));
 229
 230   /* Type, flags, message. */
 231   api.type = stream_getc (s);
 232   api.instance = stream_getw (s);
 233   api.flags = stream_getl (s);
 234   api.message = stream_getc (s);
 235
 236   /* IPv6 prefix. */
 237   memset (&p, 0, sizeof (struct prefix));
 238   p.family = AF_INET6;
 239   p.prefixlen = MIN(IPV6_MAX_PREFIXLEN, stream_getc (s));
 240   stream_get (&p.u.prefix6, s, PSIZE (p.prefixlen));
 241
 242   memset (&src_p, 0, sizeof (struct prefix));
 243   src_p.family = AF_INET6;
 244   if (CHECK_FLAG (api.message, ZAPI_MESSAGE_SRCPFX))
 245     {
 246       src_p.prefixlen = stream_getc (s);
 247       stream_get (&src_p.u.prefix6, s, PSIZE (src_p.prefixlen));
 248     }
 249
 250   if (src_p.prefixlen)
 251     /* we completely ignore srcdest routes for now. */
 252     return 0;
 253
 254   /* Nexthop, ifindex, distance, metric. */
 255   if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
 256     {
 257       api.nexthop_num = stream_getc (s);
 258       nexthop = (struct in6_addr *)
 259         malloc (api.nexthop_num * sizeof (struct in6_addr));
 260       stream_get (nexthop, s, api.nexthop_num * sizeof (struct in6_addr));
 261     }
 262   if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX))
 263     {
 264       api.ifindex_num = stream_getc (s);
 265       ifindex = stream_getl (s);
 266     }
 267   if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
 268     api.distance = stream_getc (s);
 269   else
 270     api.distance = 0;
 271   if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
 272     api.metric = stream_getl (s);
 273   else
 274     api.metric = 0;
 275
 276   if (CHECK_FLAG (api.message, ZAPI_MESSAGE_TAG))
 277     api.tag = stream_getl (s);
 278   else
 279     api.tag = 0;
 280
 281   if (IS_OSPF6_DEBUG_ZEBRA (RECV))
 282     {
 283       char prefixstr[PREFIX2STR_BUFFER], nexthopstr[128];
 284       prefix2str ((struct prefix *)&p, prefixstr, sizeof (prefixstr));
 285       if (nexthop)
 286         inet_ntop (AF_INET6, nexthop, nexthopstr, sizeof (nexthopstr));
 287       else
 288         snprintf (nexthopstr, sizeof (nexthopstr), "::");
 289
 290       zlog_debug ("Zebra Receive route %s: %s %s nexthop %s ifindex %ld tag %"ROUTE_TAG_PRI,
 291                   (command == ZEBRA_REDISTRIBUTE_IPV6_ADD ? "add" : "delete"),
 292                   zebra_route_string(api.type), prefixstr, nexthopstr, ifindex, api.tag);
 293     }
 294
 295   if (command == ZEBRA_REDISTRIBUTE_IPV6_ADD)
 296     ospf6_asbr_redistribute_add (api.type, ifindex, &p,
 297                                  api.nexthop_num, nexthop, api.tag);
 298   else
 299     ospf6_asbr_redistribute_remove (api.type, ifindex, &p);
 300
 301   if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
 302     free (nexthop);
 303
 304   return 0;
 305 }
 306
 307
 308
 309
 310 DEFUN (show_zebra,
 311        show_zebra_cmd,
 312        "show zebra",
 313        SHOW_STR
 314        "Zebra information\n")
 315 {
 316   int i;
 317   if (zclient == NULL)
 318     {
 319       vty_out (vty, "Not connected to zebra%s", VNL);
 320       return CMD_SUCCESS;
 321     }
 322
 323   vty_out (vty, "Zebra Infomation%s", VNL);
 324   vty_out (vty, "  enable: %d fail: %d%s",
 325            zclient->enable, zclient->fail, VNL);
 326   vty_out (vty, "  redistribute default: %d%s",
 327            vrf_bitmap_check (zclient->default_information, VRF_DEFAULT),
 328            VNL);
 329   vty_out (vty, "  redistribute:");
 330   for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
 331     {
 332       if (vrf_bitmap_check (zclient->redist[AFI_IP6][i], VRF_DEFAULT))
 333         vty_out (vty, " %s", zebra_route_string(i));
 334     }
 335   vty_out (vty, "%s", VNL);
 336   return CMD_SUCCESS;
 337 }
 338
 339 /* Zebra configuration write function. */
 340 static int
 341 config_write_ospf6_zebra (struct vty *vty)
 342 {
 343   if (! zclient->enable)
 344     {
 345       vty_out (vty, "no router zebra%s", VNL);
 346       vty_out (vty, "!%s", VNL);
 347     }
 348   else if (! vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 349                                VRF_DEFAULT))
 350     {
 351       vty_out (vty, "router zebra%s", VNL);
 352       vty_out (vty, " no redistribute ospf6%s", VNL);
 353       vty_out (vty, "!%s", VNL);
 354     }
 355   return 0;
 356 }
 357
 358 /* Zebra node structure. */
 359 static struct cmd_node zebra_node =
 360 {
 361   ZEBRA_NODE,
 362   "%s(config-zebra)# ",
 363 };
 364
 365 #define ADD    0
 366 #define REM    1
 367 static void
 368 ospf6_zebra_route_update (int type, struct ospf6_route *request)
 369 {
 370   struct zapi_ipv6 api;
 371   char buf[PREFIX2STR_BUFFER];
 372   int nhcount;
 373   struct in6_addr **nexthops;
 374   ifindex_t *ifindexes;
 375   int ret = 0;
 376   struct prefix_ipv6 *dest;
 377
 378   if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 379     {
 380       prefix2str (&request->prefix, buf, sizeof (buf));
 381       zlog_debug ("Send %s route: %s",
 382                   (type == REM ? "remove" : "add"), buf);
 383     }
 384
 385   if (zclient->sock < 0)
 386     {
 387       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 388         zlog_debug ("  Not connected to Zebra");
 389       return;
 390     }
 391
 392   if (request->path.origin.adv_router == ospf6->router_id &&
 393       (request->path.type == OSPF6_PATH_TYPE_EXTERNAL1 ||
 394        request->path.type == OSPF6_PATH_TYPE_EXTERNAL2))
 395     {
 396       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 397         zlog_debug ("  Ignore self-originated external route");
 398       return;
 399     }
 400
 401   /* If removing is the best path and if there's another path,
 402      treat this request as add the secondary path */
 403   if (type == REM && ospf6_route_is_best (request) &&
 404       request->next && ospf6_route_is_same (request, request->next))
 405     {
 406       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 407         zlog_debug ("  Best-path removal resulted Sencondary addition");
 408       type = ADD;
 409       request = request->next;
 410     }
 411
 412   /* Only the best path will be sent to zebra. */
 413   if (! ospf6_route_is_best (request))
 414     {
 415       /* this is not preferred best route, ignore */
 416       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 417         zlog_debug ("  Ignore non-best route");
 418       return;
 419     }
 420
 421   nhcount = ospf6_route_num_nexthops (request);
 422   if (nhcount == 0)
 423     {
 424       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 425         zlog_debug ("  No nexthop, ignore");
 426       return;
 427     }
 428
 429   /* allocate memory for nexthop_list */
 430   nexthops = XCALLOC (MTYPE_OSPF6_OTHER,
 431                       nhcount * sizeof (struct in6_addr *));
 432   if (nexthops == NULL)
 433     {
 434       zlog_warn ("Can't send route to zebra: malloc failed");
 435       return;
 436     }
 437
 438   /* allocate memory for ifindex_list */
 439   ifindexes = XCALLOC (MTYPE_OSPF6_OTHER,
 440                        nhcount * sizeof (ifindex_t));
 441   if (ifindexes == NULL)
 442     {
 443       zlog_warn ("Can't send route to zebra: malloc failed");
 444       XFREE (MTYPE_OSPF6_OTHER, nexthops);
 445       return;
 446     }
 447
 448   ospf6_route_zebra_copy_nexthops (request, ifindexes, nexthops, nhcount);
 449
 450   api.vrf_id = VRF_DEFAULT;
 451   api.type = ZEBRA_ROUTE_OSPF6;
 452   api.instance = 0;
 453   api.flags = 0;
 454   api.message = 0;
 455   api.safi = SAFI_UNICAST;
 456   SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP);
 457   api.nexthop_num = nhcount;
 458   api.nexthop = nexthops;
 459   SET_FLAG (api.message, ZAPI_MESSAGE_IFINDEX);
 460   api.ifindex_num = nhcount;
 461   api.ifindex = ifindexes;
 462   SET_FLAG (api.message, ZAPI_MESSAGE_METRIC);
 463   api.metric = (request->path.metric_type == 2 ?
 464                 request->path.u.cost_e2 : request->path.cost);
 465   if (request->path.tag)
 466     {
 467       SET_FLAG (api.message, ZAPI_MESSAGE_TAG);
 468       api.tag = request->path.tag;
 469     }
 470
 471   dest = (struct prefix_ipv6 *) &request->prefix;
 472
 473   SET_FLAG (api.message, ZAPI_MESSAGE_DISTANCE);
 474   api.distance = ospf6_distance_apply (dest, request);
 475
 476   if (type == REM)
 477     ret = zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient, dest, NULL, &api);
 478   else
 479     ret = zapi_ipv6_route (ZEBRA_IPV6_ROUTE_ADD, zclient, dest, NULL, &api);
 480
 481   if (ret < 0)
 482     zlog_err ("zapi_ipv6_route() %s failed: %s",
 483               (type == REM ? "delete" : "add"), safe_strerror (errno));
 484
 485   XFREE (MTYPE_OSPF6_OTHER, nexthops);
 486   XFREE (MTYPE_OSPF6_OTHER, ifindexes);
 487
 488   return;
 489 }
 490
 491 void
 492 ospf6_zebra_route_update_add (struct ospf6_route *request)
 493 {
 494   if (! vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 495                           VRF_DEFAULT))
 496     {
 497       ospf6->route_table->hook_add = NULL;
 498       ospf6->route_table->hook_remove = NULL;
 499       return;
 500     }
 501   ospf6_zebra_route_update (ADD, request);
 502 }
 503
 504 void
 505 ospf6_zebra_route_update_remove (struct ospf6_route *request)
 506 {
 507   if (! vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 508                           VRF_DEFAULT))
 509     {
 510       ospf6->route_table->hook_add = NULL;
 511       ospf6->route_table->hook_remove = NULL;
 512       return;
 513     }
 514   ospf6_zebra_route_update (REM, request);
 515 }
 516
 517 void
 518 ospf6_zebra_add_discard (struct ospf6_route *request)
 519 {
 520   struct zapi_ipv6 api;
 521   char buf[INET6_ADDRSTRLEN];
 522   struct prefix_ipv6 *dest;
 523
 524   if (vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 525                                                   VRF_DEFAULT))
 526     {
 527       if (!CHECK_FLAG (request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED))
 528         {
 529           api.vrf_id = VRF_DEFAULT;
 530           api.type = ZEBRA_ROUTE_OSPF6;
 531           api.flags = ZEBRA_FLAG_BLACKHOLE;
 532           api.instance = 0;
 533           api.message = 0;
 534           api.safi = SAFI_UNICAST;
 535           SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP);
 536           api.nexthop_num = 0;
 537           api.ifindex_num = 0;
 538
 539           dest = (struct prefix_ipv6 *) &request->prefix;
 540
 541           zapi_ipv6_route (ZEBRA_IPV6_ROUTE_ADD, zclient, dest, NULL, &api);
 542
 543           if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 544             zlog_debug ("Zebra: Route add discard %s/%d",
 545                         inet_ntop (AF_INET6, &dest->prefix,
 546                                    buf, INET6_ADDRSTRLEN),
 547                         dest->prefixlen);
 548           SET_FLAG (request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED);
 549         }
 550       else
 551         {
 552           dest = (struct prefix_ipv6 *) &request->prefix;
 553
 554           if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 555             zlog_debug ("Zebra: Blackhole route present already %s/%d",
 556                         inet_ntop (AF_INET6, &dest->prefix,
 557                                    buf, INET6_ADDRSTRLEN),
 558                         dest->prefixlen);
 559         }
 560     }
 561 }
 562
 563 void
 564 ospf6_zebra_delete_discard (struct ospf6_route *request)
 565 {
 566   struct zapi_ipv6 api;
 567   char buf[INET6_ADDRSTRLEN];
 568   struct prefix_ipv6 *dest;
 569
 570   if (vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6], VRF_DEFAULT))
 571     {
 572       if (CHECK_FLAG (request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED))
 573         {
 574           api.vrf_id = VRF_DEFAULT;
 575           api.type = ZEBRA_ROUTE_OSPF6;
 576           api.flags = ZEBRA_FLAG_BLACKHOLE;
 577           api.instance = 0;
 578           api.message = 0;
 579           api.safi = SAFI_UNICAST;
 580           SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP);
 581           api.nexthop_num = 0;
 582           api.ifindex_num = 0;
 583
 584           dest = (struct prefix_ipv6 *) &request->prefix;
 585
 586           zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient, dest, NULL, &api);
 587
 588           if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 589             zlog_debug ("Zebra: Route delete discard %s/%d",
 590                         inet_ntop (AF_INET6, &dest->prefix, buf,
 591                                    INET6_ADDRSTRLEN), dest->prefixlen);
 592           UNSET_FLAG (request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED);
 593         }
 594       else
 595         {
 596           dest = (struct prefix_ipv6 *) &request->prefix;
 597           if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 598             zlog_debug ("Zebra: Blackhole route already deleted %s/%d",
 599                         inet_ntop (AF_INET6, &dest->prefix, buf,
 600                                    INET6_ADDRSTRLEN), dest->prefixlen);
 601         }
 602     }
 603 }
 604
 605 DEFUN (redistribute_ospf6,
 606        redistribute_ospf6_cmd,
 607        "redistribute ospf6",
 608        "Redistribute control\n"
 609        "OSPF6 route\n")
 610 {
 611   struct ospf6_route *route;
 612
 613   if (vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6], VRF_DEFAULT))
 614     return CMD_SUCCESS;
 615
 616   vrf_bitmap_set (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6], VRF_DEFAULT);
 617
 618   if (ospf6 == NULL)
 619     return CMD_SUCCESS;
 620
 621   /* send ospf6 route to zebra route table */
 622   for (route = ospf6_route_head (ospf6->route_table); route;
 623        route = ospf6_route_next (route))
 624     ospf6_zebra_route_update_add (route);
 625
 626   ospf6->route_table->hook_add = ospf6_zebra_route_update_add;
 627   ospf6->route_table->hook_remove = ospf6_zebra_route_update_remove;
 628
 629   return CMD_SUCCESS;
 630 }
 631
 632 DEFUN (no_redistribute_ospf6,
 633        no_redistribute_ospf6_cmd,
 634        "no redistribute ospf6",
 635        NO_STR
 636        "Redistribute control\n"
 637        "OSPF6 route\n")
 638 {
 639   struct ospf6_route *route;
 640
 641   if (! vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6], VRF_DEFAULT))
 642     return CMD_SUCCESS;
 643
 644   vrf_bitmap_unset (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6], VRF_DEFAULT);
 645
 646   if (ospf6 == NULL)
 647     return CMD_SUCCESS;
 648
 649   ospf6->route_table->hook_add = NULL;
 650   ospf6->route_table->hook_remove = NULL;
 651
 652   /* withdraw ospf6 route from zebra route table */
 653   for (route = ospf6_route_head (ospf6->route_table); route;
 654        route = ospf6_route_next (route))
 655     ospf6_zebra_route_update_remove (route);
 656
 657   return CMD_SUCCESS;
 658 }
 659
 660 static struct ospf6_distance *
 661 ospf6_distance_new (void)
 662 {
 663   return XCALLOC (MTYPE_OSPF6_DISTANCE, sizeof (struct ospf6_distance));
 664 }
 665
 666 static void
 667 ospf6_distance_free (struct ospf6_distance *odistance)
 668 {
 669   XFREE (MTYPE_OSPF6_DISTANCE, odistance);
 670 }
 671
 672 int
 673 ospf6_distance_set (struct vty *vty, struct ospf6 *o,
 674                     const char *distance_str,
 675                     const char *ip_str,
 676                     const char *access_list_str)
 677 {
 678   int ret;
 679   struct prefix_ipv6 p;
 680   u_char distance;
 681   struct route_node *rn;
 682   struct ospf6_distance *odistance;
 683
 684   ret = str2prefix_ipv6 (ip_str, &p);
 685   if (ret == 0)
 686     {
 687       vty_out (vty, "Malformed prefix%s", VTY_NEWLINE);
 688       return CMD_WARNING;
 689     }
 690
 691   distance = atoi (distance_str);
 692
 693   /* Get OSPF6 distance node. */
 694   rn = route_node_get (o->distance_table, (struct prefix *) &p);
 695   if (rn->info)
 696     {
 697       odistance = rn->info;
 698       route_unlock_node (rn);
 699     }
 700   else
 701     {
 702       odistance = ospf6_distance_new ();
 703       rn->info = odistance;
 704     }
 705
 706   /* Set distance value. */
 707   odistance->distance = distance;
 708
 709   /* Reset access-list configuration. */
 710   if (odistance->access_list)
 711     {
 712       free (odistance->access_list);
 713       odistance->access_list = NULL;
 714     }
 715   if (access_list_str)
 716     odistance->access_list = strdup (access_list_str);
 717
 718   return CMD_SUCCESS;
 719 }
 720
 721 int
 722 ospf6_distance_unset (struct vty *vty, struct ospf6 *o,
 723                       const char *distance_str,
 724                       const char *ip_str,
 725                       const char *access_list_str)
 726 {
 727   int ret;
 728   struct prefix_ipv6 p;
 729   struct route_node *rn;
 730   struct ospf6_distance *odistance;
 731
 732   ret = str2prefix_ipv6 (ip_str, &p);
 733   if (ret == 0)
 734     {
 735       vty_out (vty, "Malformed prefix%s", VTY_NEWLINE);
 736       return CMD_WARNING;
 737     }
 738
 739   rn = route_node_lookup (o->distance_table, (struct prefix *) &p);
 740   if (!rn)
 741     {
 742       vty_out (vty, "Cant't find specified prefix%s", VTY_NEWLINE);
 743       return CMD_WARNING;
 744     }
 745
 746   odistance = rn->info;
 747
 748   if (odistance->access_list)
 749     free (odistance->access_list);
 750   ospf6_distance_free (odistance);
 751
 752   rn->info = NULL;
 753   route_unlock_node (rn);
 754   route_unlock_node (rn);
 755
 756   return CMD_SUCCESS;
 757 }
 758
 759 void
 760 ospf6_distance_reset (struct ospf6 *o)
 761 {
 762   struct route_node *rn;
 763   struct ospf6_distance *odistance;
 764
 765   for (rn = route_top (o->distance_table); rn; rn = route_next (rn))
 766     if ((odistance = rn->info) != NULL)
 767       {
 768         if (odistance->access_list)
 769           free (odistance->access_list);
 770         ospf6_distance_free (odistance);
 771         rn->info = NULL;
 772         route_unlock_node (rn);
 773       }
 774 }
 775
 776 u_char
 777 ospf6_distance_apply (struct prefix_ipv6 *p, struct ospf6_route *or)
 778 {
 779   struct ospf6 *o;
 780
 781   o = ospf6;
 782   if (o == NULL)
 783     return 0;
 784
 785   if (o->distance_intra)
 786     if (or->path.type == OSPF6_PATH_TYPE_INTRA)
 787       return o->distance_intra;
 788
 789   if (o->distance_inter)
 790     if (or->path.type == OSPF6_PATH_TYPE_INTER)
 791       return o->distance_inter;
 792
 793   if (o->distance_external)
 794     if(or->path.type == OSPF6_PATH_TYPE_EXTERNAL1
 795        || or->path.type == OSPF6_PATH_TYPE_EXTERNAL2)
 796       return o->distance_external;
 797
 798   if (o->distance_all)
 799     return o->distance_all;
 800
 801   return 0;
 802 }
 803
 804 static void
 805 ospf6_zebra_connected (struct zclient *zclient)
 806 {
 807   /* Send the client registration */
 808   bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER);
 809
 810   zclient_send_reg_requests (zclient, VRF_DEFAULT);
 811 }
 812
 813 void
 814 ospf6_zebra_init (struct thread_master *master)
 815 {
 816   /* Allocate zebra structure. */
 817   zclient = zclient_new(master);
 818   zclient_init (zclient, ZEBRA_ROUTE_OSPF6, 0);
 819   zclient->zebra_connected = ospf6_zebra_connected;
 820   zclient->router_id_update = ospf6_router_id_update_zebra;
 821   zclient->interface_add = ospf6_zebra_if_add;
 822   zclient->interface_delete = ospf6_zebra_if_del;
 823   zclient->interface_up = ospf6_zebra_if_state_update;
 824   zclient->interface_down = ospf6_zebra_if_state_update;
 825   zclient->interface_address_add = ospf6_zebra_if_address_update_add;
 826   zclient->interface_address_delete = ospf6_zebra_if_address_update_delete;
 827   zclient->redistribute_route_ipv4_add = NULL;
 828   zclient->redistribute_route_ipv4_del = NULL;
 829   zclient->redistribute_route_ipv6_add = ospf6_zebra_read_ipv6;
 830   zclient->redistribute_route_ipv6_del = ospf6_zebra_read_ipv6;
 831
 832   /* redistribute connected route by default */
 833   /* ospf6_zebra_redistribute (ZEBRA_ROUTE_CONNECT); */
 834
 835   /* Install zebra node. */
 836   install_node (&zebra_node, config_write_ospf6_zebra);
 837
 838   /* Install command element for zebra node. */
 839   install_element (VIEW_NODE, &show_zebra_cmd);
 840   install_default (ZEBRA_NODE);
 841   install_element (ZEBRA_NODE, &redistribute_ospf6_cmd);
 842   install_element (ZEBRA_NODE, &no_redistribute_ospf6_cmd);
 843
 844   return;
 845 }
 846
 847 /* Debug */
 848
 849 DEFUN (debug_ospf6_zebra_sendrecv,
 850        debug_ospf6_zebra_sendrecv_cmd,
 851        "debug ospf6 zebra [<send|recv>]",
 852        DEBUG_STR
 853        OSPF6_STR
 854        "Debug connection between zebra\n"
 855        "Debug Sending zebra\n"
 856        "Debug Receiving zebra\n"
 857       )
 858 {
 859   int idx_send_recv = 3;
 860   unsigned char level = 0;
 861
 862   if (argc == 4)
 863     {
 864       if (strmatch(argv[idx_send_recv]->text, "send"))
 865         level = OSPF6_DEBUG_ZEBRA_SEND;
 866       else if (strmatch(argv[idx_send_recv]->text, "recv"))
 867         level = OSPF6_DEBUG_ZEBRA_RECV;
 868     }
 869   else
 870     level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
 871
 872   OSPF6_DEBUG_ZEBRA_ON (level);
 873   return CMD_SUCCESS;
 874 }
 875
 876 DEFUN (no_debug_ospf6_zebra_sendrecv,
 877        no_debug_ospf6_zebra_sendrecv_cmd,
 878        "no debug ospf6 zebra [<send|recv>]",
 879        NO_STR
 880        DEBUG_STR
 881        OSPF6_STR
 882        "Debug connection between zebra\n"
 883        "Debug Sending zebra\n"
 884        "Debug Receiving zebra\n"
 885       )
 886 {
 887   int idx_send_recv = 4;
 888   unsigned char level = 0;
 889
 890   if (argc == 5)
 891     {
 892       if (strmatch(argv[idx_send_recv]->text, "send"))
 893         level = OSPF6_DEBUG_ZEBRA_SEND;
 894       else if (strmatch(argv[idx_send_recv]->text, "recv"))
 895         level = OSPF6_DEBUG_ZEBRA_RECV;
 896     }
 897   else
 898     level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
 899
 900   OSPF6_DEBUG_ZEBRA_OFF (level);
 901   return CMD_SUCCESS;
 902 }
 903
 904
 905 int
 906 config_write_ospf6_debug_zebra (struct vty *vty)
 907 {
 908   if (IS_OSPF6_DEBUG_ZEBRA (SEND) && IS_OSPF6_DEBUG_ZEBRA (RECV))
 909     vty_out (vty, "debug ospf6 zebra%s", VNL);
 910   else
 911     {
 912       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 913         vty_out (vty, "debug ospf6 zebra send%s", VNL);
 914       if (IS_OSPF6_DEBUG_ZEBRA (RECV))
 915         vty_out (vty, "debug ospf6 zebra recv%s", VNL);
 916     }
 917   return 0;
 918 }
 919
 920 void
 921 install_element_ospf6_debug_zebra (void)
 922 {
 923   install_element (ENABLE_NODE, &debug_ospf6_zebra_sendrecv_cmd);
 924   install_element (ENABLE_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);
 925   install_element (CONFIG_NODE, &debug_ospf6_zebra_sendrecv_cmd);
 926   install_element (CONFIG_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);
 927 }
 928
 929