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 ospf6_router_id_update_zebra(int command, struct zclient *zclient,
  53                                         zebra_size_t length, vrf_id_t vrf_id)
  54 {
  55         struct prefix router_id;
  56         struct ospf6 *o = ospf6;
  57
  58         zebra_router_id_update_read(zclient->ibuf, &router_id);
  59         router_id_zebra = router_id.u.prefix4;
  60
  61         if (o == NULL)
  62                 return 0;
  63
  64         if (o->router_id == 0)
  65                 o->router_id = (u_int32_t)router_id_zebra.s_addr;
  66
  67         return 0;
  68 }
  69
  70 /* redistribute function */
  71 void ospf6_zebra_redistribute(int type)
  72 {
  73         if (vrf_bitmap_check(zclient->redist[AFI_IP6][type], VRF_DEFAULT))
  74                 return;
  75         vrf_bitmap_set(zclient->redist[AFI_IP6][type], VRF_DEFAULT);
  76
  77         if (zclient->sock > 0)
  78                 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient,
  79                                         AFI_IP6, type, 0, VRF_DEFAULT);
  80 }
  81
  82 void ospf6_zebra_no_redistribute(int type)
  83 {
  84         if (!vrf_bitmap_check(zclient->redist[AFI_IP6][type], VRF_DEFAULT))
  85                 return;
  86         vrf_bitmap_unset(zclient->redist[AFI_IP6][type], VRF_DEFAULT);
  87         if (zclient->sock > 0)
  88                 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient,
  89                                         AFI_IP6, type, 0, VRF_DEFAULT);
  90 }
  91
  92 /* Inteface addition message from zebra. */
  93 static int ospf6_zebra_if_add(int command, struct zclient *zclient,
  94                               zebra_size_t length, vrf_id_t vrf_id)
  95 {
  96         struct interface *ifp;
  97
  98         ifp = zebra_interface_add_read(zclient->ibuf, vrf_id);
  99         if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 100                 zlog_debug("Zebra Interface add: %s index %d mtu %d", ifp->name,
 101                            ifp->ifindex, ifp->mtu6);
 102         ospf6_interface_if_add(ifp);
 103         return 0;
 104 }
 105
 106 static int ospf6_zebra_if_del(int command, struct zclient *zclient,
 107                               zebra_size_t length, vrf_id_t vrf_id)
 108 {
 109         struct interface *ifp;
 110
 111         if (!(ifp = zebra_interface_state_read(zclient->ibuf, vrf_id)))
 112                 return 0;
 113
 114         if (if_is_up(ifp))
 115                 zlog_warn("Zebra: got delete of %s, but interface is still up",
 116                           ifp->name);
 117
 118         if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 119                 zlog_debug("Zebra Interface delete: %s index %d mtu %d",
 120                            ifp->name, ifp->ifindex, ifp->mtu6);
 121
 122 #if 0
 123   /* XXX: ospf6_interface_if_del is not the right way to handle this,
 124    * because among other thinkable issues, it will also clear all
 125    * settings as they are contained in the struct ospf6_interface. */
 126   ospf6_interface_if_del (ifp);
 127 #endif /*0*/
 128
 129         ifp->ifindex = IFINDEX_DELETED;
 130         return 0;
 131 }
 132
 133 static int ospf6_zebra_if_state_update(int command, struct zclient *zclient,
 134                                        zebra_size_t length, vrf_id_t vrf_id)
 135 {
 136         struct interface *ifp;
 137
 138         ifp = zebra_interface_state_read(zclient->ibuf, vrf_id);
 139         if (ifp == NULL)
 140                 return 0;
 141
 142         if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 143                 zlog_debug(
 144                         "Zebra Interface state change: "
 145                         "%s index %d flags %llx metric %d mtu %d bandwidth %d",
 146                         ifp->name, ifp->ifindex, (unsigned long long)ifp->flags,
 147                         ifp->metric, ifp->mtu6, ifp->bandwidth);
 148
 149         ospf6_interface_state_update(ifp);
 150         return 0;
 151 }
 152
 153 static int ospf6_zebra_if_address_update_add(int command,
 154                                              struct zclient *zclient,
 155                                              zebra_size_t length,
 156                                              vrf_id_t vrf_id)
 157 {
 158         struct connected *c;
 159         char buf[128];
 160
 161         c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD,
 162                                          zclient->ibuf, vrf_id);
 163         if (c == NULL)
 164                 return 0;
 165
 166         if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 167                 zlog_debug("Zebra Interface address add: %s %5s %s/%d",
 168                            c->ifp->name, prefix_family_str(c->address),
 169                            inet_ntop(c->address->family, &c->address->u.prefix,
 170                                      buf, sizeof(buf)),
 171                            c->address->prefixlen);
 172
 173         if (c->address->family == AF_INET6) {
 174                 ospf6_interface_state_update(c->ifp);
 175                 ospf6_interface_connected_route_update(c->ifp);
 176         }
 177         return 0;
 178 }
 179
 180 static int ospf6_zebra_if_address_update_delete(int command,
 181                                                 struct zclient *zclient,
 182                                                 zebra_size_t length,
 183                                                 vrf_id_t vrf_id)
 184 {
 185         struct connected *c;
 186         char buf[128];
 187
 188         c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE,
 189                                          zclient->ibuf, vrf_id);
 190         if (c == NULL)
 191                 return 0;
 192
 193         if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 194                 zlog_debug("Zebra Interface address delete: %s %5s %s/%d",
 195                            c->ifp->name, prefix_family_str(c->address),
 196                            inet_ntop(c->address->family, &c->address->u.prefix,
 197                                      buf, sizeof(buf)),
 198                            c->address->prefixlen);
 199
 200         if (c->address->family == AF_INET6) {
 201                 ospf6_interface_connected_route_update(c->ifp);
 202                 ospf6_interface_state_update(c->ifp);
 203         }
 204
 205         connected_free(c);
 206
 207         return 0;
 208 }
 209
 210 static int ospf6_zebra_read_ipv6(int command, struct zclient *zclient,
 211                                  zebra_size_t length, vrf_id_t vrf_id)
 212 {
 213         struct stream *s;
 214         struct zapi_ipv6 api;
 215         unsigned long ifindex;
 216         struct prefix p, src_p;
 217         struct in6_addr nexthop;
 218
 219         if (ospf6 == NULL)
 220                 return 0;
 221
 222         s = zclient->ibuf;
 223         ifindex = 0;
 224         memset(&nexthop, 0, sizeof(struct in6_addr));
 225         memset(&api, 0, sizeof(api));
 226
 227         /* Type, flags, message. */
 228         api.type = stream_getc(s);
 229         api.instance = stream_getw(s);
 230         api.flags = stream_getl(s);
 231         api.message = stream_getc(s);
 232
 233         /* IPv6 prefix. */
 234         memset(&p, 0, sizeof(struct prefix));
 235         p.family = AF_INET6;
 236         p.prefixlen = MIN(IPV6_MAX_PREFIXLEN, stream_getc(s));
 237         stream_get(&p.u.prefix6, s, PSIZE(p.prefixlen));
 238
 239         memset(&src_p, 0, sizeof(struct prefix));
 240         src_p.family = AF_INET6;
 241         if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) {
 242                 src_p.prefixlen = stream_getc(s);
 243                 stream_get(&src_p.u.prefix6, s, PSIZE(src_p.prefixlen));
 244         }
 245
 246         if (src_p.prefixlen)
 247                 /* we completely ignore srcdest routes for now. */
 248                 return 0;
 249
 250         /* Nexthop, ifindex, distance, metric. */
 251         if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)) {
 252                 api.nexthop_num = stream_getc(s);
 253                 stream_get(&nexthop, s, IPV6_MAX_BYTELEN);
 254         }
 255         if (CHECK_FLAG(api.message, ZAPI_MESSAGE_IFINDEX)) {
 256                 api.ifindex_num = stream_getc(s);
 257                 ifindex = stream_getl(s);
 258         }
 259         if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE))
 260                 api.distance = stream_getc(s);
 261         else
 262                 api.distance = 0;
 263         if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC))
 264                 api.metric = stream_getl(s);
 265         else
 266                 api.metric = 0;
 267
 268         if (CHECK_FLAG(api.message, ZAPI_MESSAGE_TAG))
 269                 api.tag = stream_getl(s);
 270         else
 271                 api.tag = 0;
 272
 273         if (IS_OSPF6_DEBUG_ZEBRA(RECV)) {
 274                 char prefixstr[PREFIX2STR_BUFFER], nexthopstr[128];
 275                 prefix2str((struct prefix *)&p, prefixstr, sizeof(prefixstr));
 276                 if (api.nexthop_num)
 277                         inet_ntop(AF_INET6, &nexthop, nexthopstr,
 278                                    sizeof(nexthopstr));
 279                 else
 280                         snprintf(nexthopstr, sizeof(nexthopstr), "::");
 281
 282                 zlog_debug(
 283                         "Zebra Receive route %s: %s %s nexthop %s ifindex %ld tag %" ROUTE_TAG_PRI,
 284                         (command == ZEBRA_REDISTRIBUTE_IPV6_ADD ? "add"
 285                                                                 : "delete"),
 286                         zebra_route_string(api.type), prefixstr, nexthopstr,
 287                         ifindex, api.tag);
 288         }
 289
 290         if (command == ZEBRA_REDISTRIBUTE_IPV6_ADD)
 291                 ospf6_asbr_redistribute_add(api.type, ifindex, &p,
 292                                             api.nexthop_num, &nexthop, api.tag);
 293         else
 294                 ospf6_asbr_redistribute_remove(api.type, ifindex, &p);
 295
 296
 297         return 0;
 298 }
 299
 300 DEFUN (show_zebra,
 301        show_ospf6_zebra_cmd,
 302        "show ipv6 ospf6 zebra",
 303        SHOW_STR
 304        IPV6_STR
 305        OSPF6_STR
 306        "Zebra information\n")
 307 {
 308         int i;
 309         if (zclient == NULL) {
 310                 vty_out(vty, "Not connected to zebra\n");
 311                 return CMD_SUCCESS;
 312         }
 313
 314         vty_out(vty, "Zebra Infomation\n");
 315         vty_out(vty, "  enable: %d fail: %d\n", zclient->enable, zclient->fail);
 316         vty_out(vty, "  redistribute default: %d\n",
 317                 vrf_bitmap_check(zclient->default_information, VRF_DEFAULT));
 318         vty_out(vty, "  redistribute:");
 319         for (i = 0; i < ZEBRA_ROUTE_MAX; i++) {
 320                 if (vrf_bitmap_check(zclient->redist[AFI_IP6][i], VRF_DEFAULT))
 321                         vty_out(vty, " %s", zebra_route_string(i));
 322         }
 323         vty_out(vty, "\n");
 324         return CMD_SUCCESS;
 325 }
 326
 327 /* Zebra configuration write function. */
 328 static int config_write_ospf6_zebra(struct vty *vty)
 329 {
 330         if (!zclient->enable) {
 331                 vty_out(vty, "no router zebra\n");
 332                 vty_out(vty, "!\n");
 333         } else if (!vrf_bitmap_check(
 334                            zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 335                            VRF_DEFAULT)) {
 336                 vty_out(vty, "router zebra\n");
 337                 vty_out(vty, " no redistribute ospf6\n");
 338                 vty_out(vty, "!\n");
 339         }
 340         return 0;
 341 }
 342
 343 /* Zebra node structure. */
 344 static struct cmd_node zebra_node = {
 345         ZEBRA_NODE, "%s(config-zebra)# ",
 346 };
 347
 348 #define ADD    0
 349 #define REM    1
 350 static void ospf6_zebra_route_update(int type, struct ospf6_route *request)
 351 {
 352         struct zapi_ipv6 api;
 353         char buf[PREFIX2STR_BUFFER];
 354         int nhcount;
 355         struct in6_addr **nexthops;
 356         ifindex_t *ifindexes;
 357         int ret = 0;
 358         struct prefix_ipv6 *dest;
 359
 360         if (IS_OSPF6_DEBUG_ZEBRA(SEND)) {
 361                 prefix2str(&request->prefix, buf, sizeof(buf));
 362                 zlog_debug("Send %s route: %s",
 363                            (type == REM ? "remove" : "add"), buf);
 364         }
 365
 366         if (zclient->sock < 0) {
 367                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 368                         zlog_debug("  Not connected to Zebra");
 369                 return;
 370         }
 371
 372         if (request->path.origin.adv_router == ospf6->router_id
 373             && (request->path.type == OSPF6_PATH_TYPE_EXTERNAL1
 374                 || request->path.type == OSPF6_PATH_TYPE_EXTERNAL2)) {
 375                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 376                         zlog_debug("  Ignore self-originated external route");
 377                 return;
 378         }
 379
 380         /* If removing is the best path and if there's another path,
 381            treat this request as add the secondary path */
 382         if (type == REM && ospf6_route_is_best(request) && request->next
 383             && ospf6_route_is_same(request, request->next)) {
 384                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 385                         zlog_debug(
 386                                 "  Best-path removal resulted Sencondary addition");
 387                 type = ADD;
 388                 request = request->next;
 389         }
 390
 391         /* Only the best path will be sent to zebra. */
 392         if (!ospf6_route_is_best(request)) {
 393                 /* this is not preferred best route, ignore */
 394                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 395                         zlog_debug("  Ignore non-best route");
 396                 return;
 397         }
 398
 399         nhcount = ospf6_route_num_nexthops(request);
 400         if (nhcount == 0) {
 401                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 402                         zlog_debug("  No nexthop, ignore");
 403                 return;
 404         }
 405
 406         /* allocate memory for nexthop_list */
 407         nexthops =
 408                 XCALLOC(MTYPE_OSPF6_OTHER, nhcount * sizeof(struct in6_addr *));
 409         if (nexthops == NULL) {
 410                 zlog_warn("Can't send route to zebra: malloc failed");
 411                 return;
 412         }
 413
 414         /* allocate memory for ifindex_list */
 415         ifindexes = XCALLOC(MTYPE_OSPF6_OTHER, nhcount * sizeof(ifindex_t));
 416         if (ifindexes == NULL) {
 417                 zlog_warn("Can't send route to zebra: malloc failed");
 418                 XFREE(MTYPE_OSPF6_OTHER, nexthops);
 419                 return;
 420         }
 421
 422         ospf6_route_zebra_copy_nexthops(request, ifindexes, nexthops, nhcount);
 423
 424         api.vrf_id = VRF_DEFAULT;
 425         api.type = ZEBRA_ROUTE_OSPF6;
 426         api.instance = 0;
 427         api.flags = 0;
 428         api.message = 0;
 429         api.safi = SAFI_UNICAST;
 430         SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
 431         api.nexthop_num = nhcount;
 432         api.nexthop = nexthops;
 433         SET_FLAG(api.message, ZAPI_MESSAGE_IFINDEX);
 434         api.ifindex_num = nhcount;
 435         api.ifindex = ifindexes;
 436         SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
 437         api.metric = (request->path.metric_type == 2 ? request->path.u.cost_e2
 438                                                      : request->path.cost);
 439         if (request->path.tag) {
 440                 SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
 441                 api.tag = request->path.tag;
 442         }
 443
 444         dest = (struct prefix_ipv6 *)&request->prefix;
 445
 446         SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
 447         api.distance = ospf6_distance_apply(dest, request);
 448
 449         if (type == REM)
 450                 ret = zapi_ipv6_route(ZEBRA_IPV6_ROUTE_DELETE, zclient, dest,
 451                                       NULL, &api);
 452         else
 453                 ret = zapi_ipv6_route(ZEBRA_IPV6_ROUTE_ADD, zclient, dest, NULL,
 454                                       &api);
 455
 456         if (ret < 0)
 457                 zlog_err("zapi_ipv6_route() %s failed: %s",
 458                          (type == REM ? "delete" : "add"),
 459                          safe_strerror(errno));
 460
 461         XFREE(MTYPE_OSPF6_OTHER, nexthops);
 462         XFREE(MTYPE_OSPF6_OTHER, ifindexes);
 463
 464         return;
 465 }
 466
 467 void ospf6_zebra_route_update_add(struct ospf6_route *request)
 468 {
 469         if (!vrf_bitmap_check(zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 470                               VRF_DEFAULT)) {
 471                 ospf6->route_table->hook_add = NULL;
 472                 ospf6->route_table->hook_remove = NULL;
 473                 return;
 474         }
 475         ospf6_zebra_route_update(ADD, request);
 476 }
 477
 478 void ospf6_zebra_route_update_remove(struct ospf6_route *request)
 479 {
 480         if (!vrf_bitmap_check(zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 481                               VRF_DEFAULT)) {
 482                 ospf6->route_table->hook_add = NULL;
 483                 ospf6->route_table->hook_remove = NULL;
 484                 return;
 485         }
 486         ospf6_zebra_route_update(REM, request);
 487 }
 488
 489 void ospf6_zebra_add_discard(struct ospf6_route *request)
 490 {
 491         struct zapi_ipv6 api;
 492         char buf[INET6_ADDRSTRLEN];
 493         struct prefix_ipv6 *dest;
 494
 495         if (vrf_bitmap_check(zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 496                              VRF_DEFAULT)) {
 497                 if (!CHECK_FLAG(request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED)) {
 498                         api.vrf_id = VRF_DEFAULT;
 499                         api.type = ZEBRA_ROUTE_OSPF6;
 500                         api.flags = ZEBRA_FLAG_BLACKHOLE;
 501                         api.instance = 0;
 502                         api.message = 0;
 503                         api.safi = SAFI_UNICAST;
 504                         SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
 505                         api.nexthop_num = 0;
 506                         api.ifindex_num = 0;
 507
 508                         dest = (struct prefix_ipv6 *)&request->prefix;
 509
 510                         zapi_ipv6_route(ZEBRA_IPV6_ROUTE_ADD, zclient, dest,
 511                                         NULL, &api);
 512
 513                         if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 514                                 zlog_debug("Zebra: Route add discard %s/%d",
 515                                            inet_ntop(AF_INET6, &dest->prefix,
 516                                                      buf, INET6_ADDRSTRLEN),
 517                                            dest->prefixlen);
 518                         SET_FLAG(request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED);
 519                 } else {
 520                         dest = (struct prefix_ipv6 *)&request->prefix;
 521
 522                         if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 523                                 zlog_debug(
 524                                         "Zebra: Blackhole route present already %s/%d",
 525                                         inet_ntop(AF_INET6, &dest->prefix, buf,
 526                                                   INET6_ADDRSTRLEN),
 527                                         dest->prefixlen);
 528                 }
 529         }
 530 }
 531
 532 void ospf6_zebra_delete_discard(struct ospf6_route *request)
 533 {
 534         struct zapi_ipv6 api;
 535         char buf[INET6_ADDRSTRLEN];
 536         struct prefix_ipv6 *dest;
 537
 538         if (vrf_bitmap_check(zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 539                              VRF_DEFAULT)) {
 540                 if (CHECK_FLAG(request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED)) {
 541                         api.vrf_id = VRF_DEFAULT;
 542                         api.type = ZEBRA_ROUTE_OSPF6;
 543                         api.flags = ZEBRA_FLAG_BLACKHOLE;
 544                         api.instance = 0;
 545                         api.message = 0;
 546                         api.safi = SAFI_UNICAST;
 547                         SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
 548                         api.nexthop_num = 0;
 549                         api.ifindex_num = 0;
 550
 551                         dest = (struct prefix_ipv6 *)&request->prefix;
 552
 553                         zapi_ipv6_route(ZEBRA_IPV6_ROUTE_DELETE, zclient, dest,
 554                                         NULL, &api);
 555
 556                         if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 557                                 zlog_debug("Zebra: Route delete discard %s/%d",
 558                                            inet_ntop(AF_INET6, &dest->prefix,
 559                                                      buf, INET6_ADDRSTRLEN),
 560                                            dest->prefixlen);
 561                         UNSET_FLAG(request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED);
 562                 } else {
 563                         dest = (struct prefix_ipv6 *)&request->prefix;
 564                         if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 565                                 zlog_debug(
 566                                         "Zebra: Blackhole route already deleted %s/%d",
 567                                         inet_ntop(AF_INET6, &dest->prefix, buf,
 568                                                   INET6_ADDRSTRLEN),
 569                                         dest->prefixlen);
 570                 }
 571         }
 572 }
 573
 574 DEFUN (redistribute_ospf6,
 575        redistribute_ospf6_cmd,
 576        "redistribute ospf6",
 577        "Redistribute control\n"
 578        "OSPF6 route\n")
 579 {
 580         struct ospf6_route *route;
 581
 582         if (vrf_bitmap_check(zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 583                              VRF_DEFAULT))
 584                 return CMD_SUCCESS;
 585
 586         vrf_bitmap_set(zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 587                        VRF_DEFAULT);
 588
 589         if (ospf6 == NULL)
 590                 return CMD_SUCCESS;
 591
 592         /* send ospf6 route to zebra route table */
 593         for (route = ospf6_route_head(ospf6->route_table); route;
 594              route = ospf6_route_next(route))
 595                 ospf6_zebra_route_update_add(route);
 596
 597         ospf6->route_table->hook_add = ospf6_zebra_route_update_add;
 598         ospf6->route_table->hook_remove = ospf6_zebra_route_update_remove;
 599
 600         return CMD_SUCCESS;
 601 }
 602
 603 DEFUN (no_redistribute_ospf6,
 604        no_redistribute_ospf6_cmd,
 605        "no redistribute ospf6",
 606        NO_STR
 607        "Redistribute control\n"
 608        "OSPF6 route\n")
 609 {
 610         struct ospf6_route *route;
 611
 612         if (!vrf_bitmap_check(zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 613                               VRF_DEFAULT))
 614                 return CMD_SUCCESS;
 615
 616         vrf_bitmap_unset(zclient->redist[AFI_IP6][ZEBRA_ROUTE_OSPF6],
 617                          VRF_DEFAULT);
 618
 619         if (ospf6 == NULL)
 620                 return CMD_SUCCESS;
 621
 622         ospf6->route_table->hook_add = NULL;
 623         ospf6->route_table->hook_remove = NULL;
 624
 625         /* withdraw ospf6 route from zebra route table */
 626         for (route = ospf6_route_head(ospf6->route_table); route;
 627              route = ospf6_route_next(route))
 628                 ospf6_zebra_route_update_remove(route);
 629
 630         return CMD_SUCCESS;
 631 }
 632
 633 static struct ospf6_distance *ospf6_distance_new(void)
 634 {
 635         return XCALLOC(MTYPE_OSPF6_DISTANCE, sizeof(struct ospf6_distance));
 636 }
 637
 638 static void ospf6_distance_free(struct ospf6_distance *odistance)
 639 {
 640         XFREE(MTYPE_OSPF6_DISTANCE, odistance);
 641 }
 642
 643 int ospf6_distance_set(struct vty *vty, struct ospf6 *o,
 644                        const char *distance_str, const char *ip_str,
 645                        const char *access_list_str)
 646 {
 647         int ret;
 648         struct prefix_ipv6 p;
 649         u_char distance;
 650         struct route_node *rn;
 651         struct ospf6_distance *odistance;
 652
 653         ret = str2prefix_ipv6(ip_str, &p);
 654         if (ret == 0) {
 655                 vty_out(vty, "Malformed prefix\n");
 656                 return CMD_WARNING_CONFIG_FAILED;
 657         }
 658
 659         distance = atoi(distance_str);
 660
 661         /* Get OSPF6 distance node. */
 662         rn = route_node_get(o->distance_table, (struct prefix *)&p);
 663         if (rn->info) {
 664                 odistance = rn->info;
 665                 route_unlock_node(rn);
 666         } else {
 667                 odistance = ospf6_distance_new();
 668                 rn->info = odistance;
 669         }
 670
 671         /* Set distance value. */
 672         odistance->distance = distance;
 673
 674         /* Reset access-list configuration. */
 675         if (odistance->access_list) {
 676                 free(odistance->access_list);
 677                 odistance->access_list = NULL;
 678         }
 679         if (access_list_str)
 680                 odistance->access_list = strdup(access_list_str);
 681
 682         return CMD_SUCCESS;
 683 }
 684
 685 int ospf6_distance_unset(struct vty *vty, struct ospf6 *o,
 686                          const char *distance_str, const char *ip_str,
 687                          const char *access_list_str)
 688 {
 689         int ret;
 690         struct prefix_ipv6 p;
 691         struct route_node *rn;
 692         struct ospf6_distance *odistance;
 693
 694         ret = str2prefix_ipv6(ip_str, &p);
 695         if (ret == 0) {
 696                 vty_out(vty, "Malformed prefix\n");
 697                 return CMD_WARNING_CONFIG_FAILED;
 698         }
 699
 700         rn = route_node_lookup(o->distance_table, (struct prefix *)&p);
 701         if (!rn) {
 702                 vty_out(vty, "Cant't find specified prefix\n");
 703                 return CMD_WARNING_CONFIG_FAILED;
 704         }
 705
 706         odistance = rn->info;
 707
 708         if (odistance->access_list)
 709                 free(odistance->access_list);
 710         ospf6_distance_free(odistance);
 711
 712         rn->info = NULL;
 713         route_unlock_node(rn);
 714         route_unlock_node(rn);
 715
 716         return CMD_SUCCESS;
 717 }
 718
 719 void ospf6_distance_reset(struct ospf6 *o)
 720 {
 721         struct route_node *rn;
 722         struct ospf6_distance *odistance;
 723
 724         for (rn = route_top(o->distance_table); rn; rn = route_next(rn))
 725                 if ((odistance = rn->info) != NULL) {
 726                         if (odistance->access_list)
 727                                 free(odistance->access_list);
 728                         ospf6_distance_free(odistance);
 729                         rn->info = NULL;
 730                         route_unlock_node(rn);
 731                 }
 732 }
 733
 734 u_char ospf6_distance_apply(struct prefix_ipv6 *p, struct ospf6_route * or)
 735 {
 736         struct ospf6 *o;
 737
 738         o = ospf6;
 739         if (o == NULL)
 740                 return 0;
 741
 742         if (o->distance_intra)
 743                 if (or->path.type == OSPF6_PATH_TYPE_INTRA)
 744                         return o->distance_intra;
 745
 746         if (o->distance_inter)
 747                 if (or->path.type == OSPF6_PATH_TYPE_INTER)
 748                         return o->distance_inter;
 749
 750         if (o->distance_external)
 751                 if (or->path.type == OSPF6_PATH_TYPE_EXTERNAL1 ||
 752                     or->path.type == OSPF6_PATH_TYPE_EXTERNAL2)
 753                         return o->distance_external;
 754
 755         if (o->distance_all)
 756                 return o->distance_all;
 757
 758         return 0;
 759 }
 760
 761 static void ospf6_zebra_connected(struct zclient *zclient)
 762 {
 763         /* Send the client registration */
 764         bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER);
 765
 766         zclient_send_reg_requests(zclient, VRF_DEFAULT);
 767 }
 768
 769 void ospf6_zebra_init(struct thread_master *master)
 770 {
 771         /* Allocate zebra structure. */
 772         zclient = zclient_new(master);
 773         zclient_init(zclient, ZEBRA_ROUTE_OSPF6, 0);
 774         zclient->zebra_connected = ospf6_zebra_connected;
 775         zclient->router_id_update = ospf6_router_id_update_zebra;
 776         zclient->interface_add = ospf6_zebra_if_add;
 777         zclient->interface_delete = ospf6_zebra_if_del;
 778         zclient->interface_up = ospf6_zebra_if_state_update;
 779         zclient->interface_down = ospf6_zebra_if_state_update;
 780         zclient->interface_address_add = ospf6_zebra_if_address_update_add;
 781         zclient->interface_address_delete =
 782                 ospf6_zebra_if_address_update_delete;
 783         zclient->redistribute_route_ipv4_add = NULL;
 784         zclient->redistribute_route_ipv4_del = NULL;
 785         zclient->redistribute_route_ipv6_add = ospf6_zebra_read_ipv6;
 786         zclient->redistribute_route_ipv6_del = ospf6_zebra_read_ipv6;
 787
 788         /* redistribute connected route by default */
 789         /* ospf6_zebra_redistribute (ZEBRA_ROUTE_CONNECT); */
 790
 791         /* Install zebra node. */
 792         install_node(&zebra_node, config_write_ospf6_zebra);
 793
 794         /* Install command element for zebra node. */
 795         install_element(VIEW_NODE, &show_ospf6_zebra_cmd);
 796         install_default(ZEBRA_NODE);
 797         install_element(ZEBRA_NODE, &redistribute_ospf6_cmd);
 798         install_element(ZEBRA_NODE, &no_redistribute_ospf6_cmd);
 799
 800         return;
 801 }
 802
 803 /* Debug */
 804
 805 DEFUN (debug_ospf6_zebra_sendrecv,
 806        debug_ospf6_zebra_sendrecv_cmd,
 807        "debug ospf6 zebra [<send|recv>]",
 808        DEBUG_STR
 809        OSPF6_STR
 810        "Debug connection between zebra\n"
 811        "Debug Sending zebra\n"
 812        "Debug Receiving zebra\n"
 813       )
 814 {
 815         int idx_send_recv = 3;
 816         unsigned char level = 0;
 817
 818         if (argc == 4) {
 819                 if (strmatch(argv[idx_send_recv]->text, "send"))
 820                         level = OSPF6_DEBUG_ZEBRA_SEND;
 821                 else if (strmatch(argv[idx_send_recv]->text, "recv"))
 822                         level = OSPF6_DEBUG_ZEBRA_RECV;
 823         } else
 824                 level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
 825
 826         OSPF6_DEBUG_ZEBRA_ON(level);
 827         return CMD_SUCCESS;
 828 }
 829
 830 DEFUN (no_debug_ospf6_zebra_sendrecv,
 831        no_debug_ospf6_zebra_sendrecv_cmd,
 832        "no debug ospf6 zebra [<send|recv>]",
 833        NO_STR
 834        DEBUG_STR
 835        OSPF6_STR
 836        "Debug connection between zebra\n"
 837        "Debug Sending zebra\n"
 838        "Debug Receiving zebra\n"
 839       )
 840 {
 841         int idx_send_recv = 4;
 842         unsigned char level = 0;
 843
 844         if (argc == 5) {
 845                 if (strmatch(argv[idx_send_recv]->text, "send"))
 846                         level = OSPF6_DEBUG_ZEBRA_SEND;
 847                 else if (strmatch(argv[idx_send_recv]->text, "recv"))
 848                         level = OSPF6_DEBUG_ZEBRA_RECV;
 849         } else
 850                 level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
 851
 852         OSPF6_DEBUG_ZEBRA_OFF(level);
 853         return CMD_SUCCESS;
 854 }
 855
 856
 857 int config_write_ospf6_debug_zebra(struct vty *vty)
 858 {
 859         if (IS_OSPF6_DEBUG_ZEBRA(SEND) && IS_OSPF6_DEBUG_ZEBRA(RECV))
 860                 vty_out(vty, "debug ospf6 zebra\n");
 861         else {
 862                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 863                         vty_out(vty, "debug ospf6 zebra send\n");
 864                 if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 865                         vty_out(vty, "debug ospf6 zebra recv\n");
 866         }
 867         return 0;
 868 }
 869
 870 void install_element_ospf6_debug_zebra(void)
 871 {
 872         install_element(ENABLE_NODE, &debug_ospf6_zebra_sendrecv_cmd);
 873         install_element(ENABLE_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);
 874         install_element(CONFIG_NODE, &debug_ospf6_zebra_sendrecv_cmd);
 875         install_element(CONFIG_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);
 876 }