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 DEFUN (show_zebra,
 308        show_ospf6_zebra_cmd,
 309        "show ipv6 ospf6 zebra",
 310        SHOW_STR
 311        IPV6_STR
 312        OSPF6_STR
 313        "Zebra information\n")
 314 {
 315   int i;
 316   if (zclient == NULL)
 317     {
 318       vty_out (vty, "Not connected to zebra\n");
 319       return CMD_SUCCESS;
 320     }
 321
 322   vty_out (vty, "Zebra Infomation\n");
 323   vty_out (vty, "  enable: %d fail: %d\n",
 324            zclient->enable, zclient->fail);
 325   vty_out (vty, "  redistribute default: %d\n",
 326            vrf_bitmap_check (zclient->default_information, VRF_DEFAULT));
 327   vty_out (vty, "  redistribute:");
 328   for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
 329     {
 330       if (vrf_bitmap_check (zclient->redist[AFI_IP6][i], VRF_DEFAULT))
 331         vty_out (vty, " %s", zebra_route_string(i));
 332     }
 333   vty_out (vty, "\n");
 334   return CMD_SUCCESS;
 335 }
 336
 337 /* Zebra configuration write function. */
 338 static int
 339 config_write_ospf6_zebra (struct vty *vty)
 340 {
 341   if (! zclient->enable)
 342     {
 343       vty_out (vty, "no router zebra\n");
 344       vty_out (vty, "!\n");
 345     }
 346   else if (! vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 347                                VRF_DEFAULT))
 348     {
 349       vty_out (vty, "router zebra\n");
 350       vty_out (vty, " no redistribute ospf6\n");
 351       vty_out (vty, "!\n");
 352     }
 353   return 0;
 354 }
 355
 356 /* Zebra node structure. */
 357 static struct cmd_node zebra_node =
 358 {
 359   ZEBRA_NODE,
 360   "%s(config-zebra)# ",
 361 };
 362
 363 #define ADD    0
 364 #define REM    1
 365 static void
 366 ospf6_zebra_route_update (int type, struct ospf6_route *request)
 367 {
 368   struct zapi_ipv6 api;
 369   char buf[PREFIX2STR_BUFFER];
 370   int nhcount;
 371   struct in6_addr **nexthops;
 372   ifindex_t *ifindexes;
 373   int ret = 0;
 374   struct prefix_ipv6 *dest;
 375
 376   if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 377     {
 378       prefix2str (&request->prefix, buf, sizeof (buf));
 379       zlog_debug ("Send %s route: %s",
 380                   (type == REM ? "remove" : "add"), buf);
 381     }
 382
 383   if (zclient->sock < 0)
 384     {
 385       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 386         zlog_debug ("  Not connected to Zebra");
 387       return;
 388     }
 389
 390   if (request->path.origin.adv_router == ospf6->router_id &&
 391       (request->path.type == OSPF6_PATH_TYPE_EXTERNAL1 ||
 392        request->path.type == OSPF6_PATH_TYPE_EXTERNAL2))
 393     {
 394       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 395         zlog_debug ("  Ignore self-originated external route");
 396       return;
 397     }
 398
 399   /* If removing is the best path and if there's another path,
 400      treat this request as add the secondary path */
 401   if (type == REM && ospf6_route_is_best (request) &&
 402       request->next && ospf6_route_is_same (request, request->next))
 403     {
 404       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 405         zlog_debug ("  Best-path removal resulted Sencondary addition");
 406       type = ADD;
 407       request = request->next;
 408     }
 409
 410   /* Only the best path will be sent to zebra. */
 411   if (! ospf6_route_is_best (request))
 412     {
 413       /* this is not preferred best route, ignore */
 414       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 415         zlog_debug ("  Ignore non-best route");
 416       return;
 417     }
 418
 419   nhcount = ospf6_route_num_nexthops (request);
 420   if (nhcount == 0)
 421     {
 422       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 423         zlog_debug ("  No nexthop, ignore");
 424       return;
 425     }
 426
 427   /* allocate memory for nexthop_list */
 428   nexthops = XCALLOC (MTYPE_OSPF6_OTHER,
 429                       nhcount * sizeof (struct in6_addr *));
 430   if (nexthops == NULL)
 431     {
 432       zlog_warn ("Can't send route to zebra: malloc failed");
 433       return;
 434     }
 435
 436   /* allocate memory for ifindex_list */
 437   ifindexes = XCALLOC (MTYPE_OSPF6_OTHER,
 438                        nhcount * sizeof (ifindex_t));
 439   if (ifindexes == NULL)
 440     {
 441       zlog_warn ("Can't send route to zebra: malloc failed");
 442       XFREE (MTYPE_OSPF6_OTHER, nexthops);
 443       return;
 444     }
 445
 446   ospf6_route_zebra_copy_nexthops (request, ifindexes, nexthops, nhcount);
 447
 448   api.vrf_id = VRF_DEFAULT;
 449   api.type = ZEBRA_ROUTE_OSPF6;
 450   api.instance = 0;
 451   api.flags = 0;
 452   api.message = 0;
 453   api.safi = SAFI_UNICAST;
 454   SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP);
 455   api.nexthop_num = nhcount;
 456   api.nexthop = nexthops;
 457   SET_FLAG (api.message, ZAPI_MESSAGE_IFINDEX);
 458   api.ifindex_num = nhcount;
 459   api.ifindex = ifindexes;
 460   SET_FLAG (api.message, ZAPI_MESSAGE_METRIC);
 461   api.metric = (request->path.metric_type == 2 ?
 462                 request->path.u.cost_e2 : request->path.cost);
 463   if (request->path.tag)
 464     {
 465       SET_FLAG (api.message, ZAPI_MESSAGE_TAG);
 466       api.tag = request->path.tag;
 467     }
 468
 469   dest = (struct prefix_ipv6 *) &request->prefix;
 470
 471   SET_FLAG (api.message, ZAPI_MESSAGE_DISTANCE);
 472   api.distance = ospf6_distance_apply (dest, request);
 473
 474   if (type == REM)
 475     ret = zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient, dest, NULL, &api);
 476   else
 477     ret = zapi_ipv6_route (ZEBRA_IPV6_ROUTE_ADD, zclient, dest, NULL, &api);
 478
 479   if (ret < 0)
 480     zlog_err ("zapi_ipv6_route() %s failed: %s",
 481               (type == REM ? "delete" : "add"), safe_strerror (errno));
 482
 483   XFREE (MTYPE_OSPF6_OTHER, nexthops);
 484   XFREE (MTYPE_OSPF6_OTHER, ifindexes);
 485
 486   return;
 487 }
 488
 489 void
 490 ospf6_zebra_route_update_add (struct ospf6_route *request)
 491 {
 492   if (! vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 493                           VRF_DEFAULT))
 494     {
 495       ospf6->route_table->hook_add = NULL;
 496       ospf6->route_table->hook_remove = NULL;
 497       return;
 498     }
 499   ospf6_zebra_route_update (ADD, request);
 500 }
 501
 502 void
 503 ospf6_zebra_route_update_remove (struct ospf6_route *request)
 504 {
 505   if (! vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 506                           VRF_DEFAULT))
 507     {
 508       ospf6->route_table->hook_add = NULL;
 509       ospf6->route_table->hook_remove = NULL;
 510       return;
 511     }
 512   ospf6_zebra_route_update (REM, request);
 513 }
 514
 515 void
 516 ospf6_zebra_add_discard (struct ospf6_route *request)
 517 {
 518   struct zapi_ipv6 api;
 519   char buf[INET6_ADDRSTRLEN];
 520   struct prefix_ipv6 *dest;
 521
 522   if (vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 523                                                   VRF_DEFAULT))
 524     {
 525       if (!CHECK_FLAG (request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED))
 526         {
 527           api.vrf_id = VRF_DEFAULT;
 528           api.type = ZEBRA_ROUTE_OSPF6;
 529           api.flags = ZEBRA_FLAG_BLACKHOLE;
 530           api.instance = 0;
 531           api.message = 0;
 532           api.safi = SAFI_UNICAST;
 533           SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP);
 534           api.nexthop_num = 0;
 535           api.ifindex_num = 0;
 536
 537           dest = (struct prefix_ipv6 *) &request->prefix;
 538
 539           zapi_ipv6_route (ZEBRA_IPV6_ROUTE_ADD, zclient, dest, NULL, &api);
 540
 541           if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 542             zlog_debug ("Zebra: Route add discard %s/%d",
 543                         inet_ntop (AF_INET6, &dest->prefix,
 544                                    buf, INET6_ADDRSTRLEN),
 545                         dest->prefixlen);
 546           SET_FLAG (request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED);
 547         }
 548       else
 549         {
 550           dest = (struct prefix_ipv6 *) &request->prefix;
 551
 552           if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 553             zlog_debug ("Zebra: Blackhole route present already %s/%d",
 554                         inet_ntop (AF_INET6, &dest->prefix,
 555                                    buf, INET6_ADDRSTRLEN),
 556                         dest->prefixlen);
 557         }
 558     }
 559 }
 560
 561 void
 562 ospf6_zebra_delete_discard (struct ospf6_route *request)
 563 {
 564   struct zapi_ipv6 api;
 565   char buf[INET6_ADDRSTRLEN];
 566   struct prefix_ipv6 *dest;
 567
 568   if (vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6], VRF_DEFAULT))
 569     {
 570       if (CHECK_FLAG (request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED))
 571         {
 572           api.vrf_id = VRF_DEFAULT;
 573           api.type = ZEBRA_ROUTE_OSPF6;
 574           api.flags = ZEBRA_FLAG_BLACKHOLE;
 575           api.instance = 0;
 576           api.message = 0;
 577           api.safi = SAFI_UNICAST;
 578           SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP);
 579           api.nexthop_num = 0;
 580           api.ifindex_num = 0;
 581
 582           dest = (struct prefix_ipv6 *) &request->prefix;
 583
 584           zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient, dest, NULL, &api);
 585
 586           if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 587             zlog_debug ("Zebra: Route delete discard %s/%d",
 588                         inet_ntop (AF_INET6, &dest->prefix, buf,
 589                                    INET6_ADDRSTRLEN), dest->prefixlen);
 590           UNSET_FLAG (request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED);
 591         }
 592       else
 593         {
 594           dest = (struct prefix_ipv6 *) &request->prefix;
 595           if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 596             zlog_debug ("Zebra: Blackhole route already deleted %s/%d",
 597                         inet_ntop (AF_INET6, &dest->prefix, buf,
 598                                    INET6_ADDRSTRLEN), dest->prefixlen);
 599         }
 600     }
 601 }
 602
 603 DEFUN (redistribute_ospf6,
 604        redistribute_ospf6_cmd,
 605        "redistribute ospf6",
 606        "Redistribute control\n"
 607        "OSPF6 route\n")
 608 {
 609   struct ospf6_route *route;
 610
 611   if (vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6], VRF_DEFAULT))
 612     return CMD_SUCCESS;
 613
 614   vrf_bitmap_set (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6], VRF_DEFAULT);
 615
 616   if (ospf6 == NULL)
 617     return CMD_SUCCESS;
 618
 619   /* send ospf6 route to zebra route table */
 620   for (route = ospf6_route_head (ospf6->route_table); route;
 621        route = ospf6_route_next (route))
 622     ospf6_zebra_route_update_add (route);
 623
 624   ospf6->route_table->hook_add = ospf6_zebra_route_update_add;
 625   ospf6->route_table->hook_remove = ospf6_zebra_route_update_remove;
 626
 627   return CMD_SUCCESS;
 628 }
 629
 630 DEFUN (no_redistribute_ospf6,
 631        no_redistribute_ospf6_cmd,
 632        "no redistribute ospf6",
 633        NO_STR
 634        "Redistribute control\n"
 635        "OSPF6 route\n")
 636 {
 637   struct ospf6_route *route;
 638
 639   if (! vrf_bitmap_check (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6], VRF_DEFAULT))
 640     return CMD_SUCCESS;
 641
 642   vrf_bitmap_unset (zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6], VRF_DEFAULT);
 643
 644   if (ospf6 == NULL)
 645     return CMD_SUCCESS;
 646
 647   ospf6->route_table->hook_add = NULL;
 648   ospf6->route_table->hook_remove = NULL;
 649
 650   /* withdraw ospf6 route from zebra route table */
 651   for (route = ospf6_route_head (ospf6->route_table); route;
 652        route = ospf6_route_next (route))
 653     ospf6_zebra_route_update_remove (route);
 654
 655   return CMD_SUCCESS;
 656 }
 657
 658 static struct ospf6_distance *
 659 ospf6_distance_new (void)
 660 {
 661   return XCALLOC (MTYPE_OSPF6_DISTANCE, sizeof (struct ospf6_distance));
 662 }
 663
 664 static void
 665 ospf6_distance_free (struct ospf6_distance *odistance)
 666 {
 667   XFREE (MTYPE_OSPF6_DISTANCE, odistance);
 668 }
 669
 670 int
 671 ospf6_distance_set (struct vty *vty, struct ospf6 *o,
 672                     const char *distance_str,
 673                     const char *ip_str,
 674                     const char *access_list_str)
 675 {
 676   int ret;
 677   struct prefix_ipv6 p;
 678   u_char distance;
 679   struct route_node *rn;
 680   struct ospf6_distance *odistance;
 681
 682   ret = str2prefix_ipv6 (ip_str, &p);
 683   if (ret == 0)
 684     {
 685       vty_out (vty, "Malformed prefix\n");
 686       return CMD_WARNING_CONFIG_FAILED;
 687     }
 688
 689   distance = atoi (distance_str);
 690
 691   /* Get OSPF6 distance node. */
 692   rn = route_node_get (o->distance_table, (struct prefix *) &p);
 693   if (rn->info)
 694     {
 695       odistance = rn->info;
 696       route_unlock_node (rn);
 697     }
 698   else
 699     {
 700       odistance = ospf6_distance_new ();
 701       rn->info = odistance;
 702     }
 703
 704   /* Set distance value. */
 705   odistance->distance = distance;
 706
 707   /* Reset access-list configuration. */
 708   if (odistance->access_list)
 709     {
 710       free (odistance->access_list);
 711       odistance->access_list = NULL;
 712     }
 713   if (access_list_str)
 714     odistance->access_list = strdup (access_list_str);
 715
 716   return CMD_SUCCESS;
 717 }
 718
 719 int
 720 ospf6_distance_unset (struct vty *vty, struct ospf6 *o,
 721                       const char *distance_str,
 722                       const char *ip_str,
 723                       const char *access_list_str)
 724 {
 725   int ret;
 726   struct prefix_ipv6 p;
 727   struct route_node *rn;
 728   struct ospf6_distance *odistance;
 729
 730   ret = str2prefix_ipv6 (ip_str, &p);
 731   if (ret == 0)
 732     {
 733       vty_out (vty, "Malformed prefix\n");
 734       return CMD_WARNING_CONFIG_FAILED;
 735     }
 736
 737   rn = route_node_lookup (o->distance_table, (struct prefix *) &p);
 738   if (!rn)
 739     {
 740       vty_out (vty, "Cant't find specified prefix\n");
 741       return CMD_WARNING_CONFIG_FAILED;
 742     }
 743
 744   odistance = rn->info;
 745
 746   if (odistance->access_list)
 747     free (odistance->access_list);
 748   ospf6_distance_free (odistance);
 749
 750   rn->info = NULL;
 751   route_unlock_node (rn);
 752   route_unlock_node (rn);
 753
 754   return CMD_SUCCESS;
 755 }
 756
 757 void
 758 ospf6_distance_reset (struct ospf6 *o)
 759 {
 760   struct route_node *rn;
 761   struct ospf6_distance *odistance;
 762
 763   for (rn = route_top (o->distance_table); rn; rn = route_next (rn))
 764     if ((odistance = rn->info) != NULL)
 765       {
 766         if (odistance->access_list)
 767           free (odistance->access_list);
 768         ospf6_distance_free (odistance);
 769         rn->info = NULL;
 770         route_unlock_node (rn);
 771       }
 772 }
 773
 774 u_char
 775 ospf6_distance_apply (struct prefix_ipv6 *p, struct ospf6_route *or)
 776 {
 777   struct ospf6 *o;
 778
 779   o = ospf6;
 780   if (o == NULL)
 781     return 0;
 782
 783   if (o->distance_intra)
 784     if (or->path.type == OSPF6_PATH_TYPE_INTRA)
 785       return o->distance_intra;
 786
 787   if (o->distance_inter)
 788     if (or->path.type == OSPF6_PATH_TYPE_INTER)
 789       return o->distance_inter;
 790
 791   if (o->distance_external)
 792     if(or->path.type == OSPF6_PATH_TYPE_EXTERNAL1
 793        || or->path.type == OSPF6_PATH_TYPE_EXTERNAL2)
 794       return o->distance_external;
 795
 796   if (o->distance_all)
 797     return o->distance_all;
 798
 799   return 0;
 800 }
 801
 802 static void
 803 ospf6_zebra_connected (struct zclient *zclient)
 804 {
 805   /* Send the client registration */
 806   bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER);
 807
 808   zclient_send_reg_requests (zclient, VRF_DEFAULT);
 809 }
 810
 811 void
 812 ospf6_zebra_init (struct thread_master *master)
 813 {
 814   /* Allocate zebra structure. */
 815   zclient = zclient_new(master);
 816   zclient_init (zclient, ZEBRA_ROUTE_OSPF6, 0);
 817   zclient->zebra_connected = ospf6_zebra_connected;
 818   zclient->router_id_update = ospf6_router_id_update_zebra;
 819   zclient->interface_add = ospf6_zebra_if_add;
 820   zclient->interface_delete = ospf6_zebra_if_del;
 821   zclient->interface_up = ospf6_zebra_if_state_update;
 822   zclient->interface_down = ospf6_zebra_if_state_update;
 823   zclient->interface_address_add = ospf6_zebra_if_address_update_add;
 824   zclient->interface_address_delete = ospf6_zebra_if_address_update_delete;
 825   zclient->redistribute_route_ipv4_add = NULL;
 826   zclient->redistribute_route_ipv4_del = NULL;
 827   zclient->redistribute_route_ipv6_add = ospf6_zebra_read_ipv6;
 828   zclient->redistribute_route_ipv6_del = ospf6_zebra_read_ipv6;
 829
 830   /* redistribute connected route by default */
 831   /* ospf6_zebra_redistribute (ZEBRA_ROUTE_CONNECT); */
 832
 833   /* Install zebra node. */
 834   install_node (&zebra_node, config_write_ospf6_zebra);
 835
 836   /* Install command element for zebra node. */
 837   install_element (VIEW_NODE, &show_ospf6_zebra_cmd);
 838   install_default (ZEBRA_NODE);
 839   install_element (ZEBRA_NODE, &redistribute_ospf6_cmd);
 840   install_element (ZEBRA_NODE, &no_redistribute_ospf6_cmd);
 841
 842   return;
 843 }
 844
 845 /* Debug */
 846
 847 DEFUN (debug_ospf6_zebra_sendrecv,
 848        debug_ospf6_zebra_sendrecv_cmd,
 849        "debug ospf6 zebra [<send|recv>]",
 850        DEBUG_STR
 851        OSPF6_STR
 852        "Debug connection between zebra\n"
 853        "Debug Sending zebra\n"
 854        "Debug Receiving zebra\n"
 855       )
 856 {
 857   int idx_send_recv = 3;
 858   unsigned char level = 0;
 859
 860   if (argc == 4)
 861     {
 862       if (strmatch(argv[idx_send_recv]->text, "send"))
 863         level = OSPF6_DEBUG_ZEBRA_SEND;
 864       else if (strmatch(argv[idx_send_recv]->text, "recv"))
 865         level = OSPF6_DEBUG_ZEBRA_RECV;
 866     }
 867   else
 868     level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
 869
 870   OSPF6_DEBUG_ZEBRA_ON (level);
 871   return CMD_SUCCESS;
 872 }
 873
 874 DEFUN (no_debug_ospf6_zebra_sendrecv,
 875        no_debug_ospf6_zebra_sendrecv_cmd,
 876        "no debug ospf6 zebra [<send|recv>]",
 877        NO_STR
 878        DEBUG_STR
 879        OSPF6_STR
 880        "Debug connection between zebra\n"
 881        "Debug Sending zebra\n"
 882        "Debug Receiving zebra\n"
 883       )
 884 {
 885   int idx_send_recv = 4;
 886   unsigned char level = 0;
 887
 888   if (argc == 5)
 889     {
 890       if (strmatch(argv[idx_send_recv]->text, "send"))
 891         level = OSPF6_DEBUG_ZEBRA_SEND;
 892       else if (strmatch(argv[idx_send_recv]->text, "recv"))
 893         level = OSPF6_DEBUG_ZEBRA_RECV;
 894     }
 895   else
 896     level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
 897
 898   OSPF6_DEBUG_ZEBRA_OFF (level);
 899   return CMD_SUCCESS;
 900 }
 901
 902
 903 int
 904 config_write_ospf6_debug_zebra (struct vty *vty)
 905 {
 906   if (IS_OSPF6_DEBUG_ZEBRA (SEND) && IS_OSPF6_DEBUG_ZEBRA (RECV))
 907     vty_out (vty, "debug ospf6 zebra\n");
 908   else
 909     {
 910       if (IS_OSPF6_DEBUG_ZEBRA (SEND))
 911         vty_out (vty, "debug ospf6 zebra send\n");
 912       if (IS_OSPF6_DEBUG_ZEBRA (RECV))
 913         vty_out (vty, "debug ospf6 zebra recv\n");
 914     }
 915   return 0;
 916 }
 917
 918 void
 919 install_element_ospf6_debug_zebra (void)
 920 {
 921   install_element (ENABLE_NODE, &debug_ospf6_zebra_sendrecv_cmd);
 922   install_element (ENABLE_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);
 923   install_element (CONFIG_NODE, &debug_ospf6_zebra_sendrecv_cmd);
 924   install_element (CONFIG_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);
 925 }
 926
 927