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 /* Router-id update message from zebra. */
  50 static int ospf6_router_id_update_zebra(int command, struct zclient *zclient,
  51                                         zebra_size_t length, vrf_id_t vrf_id)
  52 {
  53         struct prefix router_id;
  54         struct ospf6 *o = ospf6;
  55
  56         zebra_router_id_update_read(zclient->ibuf, &router_id);
  57
  58         om6->zebra_router_id = router_id.u.prefix4.s_addr;
  59
  60         if (o == NULL)
  61                 return 0;
  62
  63         o->router_id_zebra = router_id.u.prefix4;
  64         if (IS_OSPF6_DEBUG_ZEBRA(RECV)) {
  65                 char buf[INET_ADDRSTRLEN];
  66
  67                 zlog_debug("%s: zebra router-id %s update",
  68                            __PRETTY_FUNCTION__,
  69                            inet_ntop(AF_INET, &router_id.u.prefix4,
  70                                      buf, INET_ADDRSTRLEN));
  71         }
  72
  73         ospf6_router_id_update();
  74
  75         return 0;
  76 }
  77
  78 /* redistribute function */
  79 void ospf6_zebra_redistribute(int type)
  80 {
  81         if (vrf_bitmap_check(zclient->redist[AFI_IP6][type], VRF_DEFAULT))
  82                 return;
  83         vrf_bitmap_set(zclient->redist[AFI_IP6][type], VRF_DEFAULT);
  84
  85         if (zclient->sock > 0)
  86                 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient,
  87                                         AFI_IP6, type, 0, VRF_DEFAULT);
  88 }
  89
  90 void ospf6_zebra_no_redistribute(int type)
  91 {
  92         if (!vrf_bitmap_check(zclient->redist[AFI_IP6][type], VRF_DEFAULT))
  93                 return;
  94         vrf_bitmap_unset(zclient->redist[AFI_IP6][type], VRF_DEFAULT);
  95         if (zclient->sock > 0)
  96                 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient,
  97                                         AFI_IP6, type, 0, VRF_DEFAULT);
  98 }
  99
 100 /* Inteface addition message from zebra. */
 101 static int ospf6_zebra_if_add(int command, struct zclient *zclient,
 102                               zebra_size_t length, vrf_id_t vrf_id)
 103 {
 104         struct interface *ifp;
 105
 106         ifp = zebra_interface_add_read(zclient->ibuf, vrf_id);
 107         if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 108                 zlog_debug("Zebra Interface add: %s index %d mtu %d", ifp->name,
 109                            ifp->ifindex, ifp->mtu6);
 110         ospf6_interface_if_add(ifp);
 111         return 0;
 112 }
 113
 114 static int ospf6_zebra_if_del(int command, struct zclient *zclient,
 115                               zebra_size_t length, vrf_id_t vrf_id)
 116 {
 117         struct interface *ifp;
 118
 119         if (!(ifp = zebra_interface_state_read(zclient->ibuf, vrf_id)))
 120                 return 0;
 121
 122         if (if_is_up(ifp))
 123                 zlog_warn("Zebra: got delete of %s, but interface is still up",
 124                           ifp->name);
 125
 126         if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 127                 zlog_debug("Zebra Interface delete: %s index %d mtu %d",
 128                            ifp->name, ifp->ifindex, ifp->mtu6);
 129
 130         if_set_index(ifp, IFINDEX_INTERNAL);
 131         return 0;
 132 }
 133
 134 static int ospf6_zebra_if_state_update(int command, struct zclient *zclient,
 135                                        zebra_size_t length, vrf_id_t vrf_id)
 136 {
 137         struct interface *ifp;
 138
 139         ifp = zebra_interface_state_read(zclient->ibuf, vrf_id);
 140         if (ifp == NULL)
 141                 return 0;
 142
 143         if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 144                 zlog_debug(
 145                         "Zebra Interface state change: "
 146                         "%s index %d flags %llx metric %d mtu %d bandwidth %d",
 147                         ifp->name, ifp->ifindex, (unsigned long long)ifp->flags,
 148                         ifp->metric, ifp->mtu6, ifp->bandwidth);
 149
 150         ospf6_interface_state_update(ifp);
 151         return 0;
 152 }
 153
 154 static int ospf6_zebra_if_address_update_add(int command,
 155                                              struct zclient *zclient,
 156                                              zebra_size_t length,
 157                                              vrf_id_t vrf_id)
 158 {
 159         struct connected *c;
 160         char buf[128];
 161
 162         c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD,
 163                                          zclient->ibuf, vrf_id);
 164         if (c == NULL)
 165                 return 0;
 166
 167         if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 168                 zlog_debug("Zebra Interface address add: %s %5s %s/%d",
 169                            c->ifp->name, prefix_family_str(c->address),
 170                            inet_ntop(c->address->family, &c->address->u.prefix,
 171                                      buf, sizeof(buf)),
 172                            c->address->prefixlen);
 173
 174         if (c->address->family == AF_INET6) {
 175                 ospf6_interface_state_update(c->ifp);
 176                 ospf6_interface_connected_route_update(c->ifp);
 177         }
 178         return 0;
 179 }
 180
 181 static int ospf6_zebra_if_address_update_delete(int command,
 182                                                 struct zclient *zclient,
 183                                                 zebra_size_t length,
 184                                                 vrf_id_t vrf_id)
 185 {
 186         struct connected *c;
 187         char buf[128];
 188
 189         c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE,
 190                                          zclient->ibuf, vrf_id);
 191         if (c == NULL)
 192                 return 0;
 193
 194         if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 195                 zlog_debug("Zebra Interface address delete: %s %5s %s/%d",
 196                            c->ifp->name, prefix_family_str(c->address),
 197                            inet_ntop(c->address->family, &c->address->u.prefix,
 198                                      buf, sizeof(buf)),
 199                            c->address->prefixlen);
 200
 201         if (c->address->family == AF_INET6) {
 202                 ospf6_interface_connected_route_update(c->ifp);
 203                 ospf6_interface_state_update(c->ifp);
 204         }
 205
 206         connected_free(c);
 207
 208         return 0;
 209 }
 210
 211 static int ospf6_zebra_read_route(int command, struct zclient *zclient,
 212                                   zebra_size_t length, vrf_id_t vrf_id)
 213 {
 214         struct zapi_route api;
 215         unsigned long ifindex;
 216         struct in6_addr *nexthop;
 217
 218         if (ospf6 == NULL)
 219                 return 0;
 220
 221         if (zapi_route_decode(zclient->ibuf, &api) < 0)
 222                 return -1;
 223
 224         /* we completely ignore srcdest routes for now. */
 225         if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
 226                 return 0;
 227
 228         ifindex = api.nexthops[0].ifindex;
 229         nexthop = &api.nexthops[0].gate.ipv6;
 230
 231         if (IS_OSPF6_DEBUG_ZEBRA(RECV)) {
 232                 char prefixstr[PREFIX2STR_BUFFER], nexthopstr[128];
 233                 prefix2str((struct prefix *)&api.prefix, prefixstr,
 234                            sizeof(prefixstr));
 235                 inet_ntop(AF_INET6, nexthop, nexthopstr, sizeof(nexthopstr));
 236
 237                 zlog_debug(
 238                         "Zebra Receive route %s: %s %s nexthop %s ifindex %ld tag %" ROUTE_TAG_PRI,
 239                         (command == ZEBRA_REDISTRIBUTE_ROUTE_ADD ? "add"
 240                                                                  : "delete"),
 241                         zebra_route_string(api.type), prefixstr, nexthopstr,
 242                         ifindex, api.tag);
 243         }
 244
 245         if (command == ZEBRA_REDISTRIBUTE_ROUTE_ADD)
 246                 ospf6_asbr_redistribute_add(api.type, ifindex, &api.prefix,
 247                                             api.nexthop_num, nexthop, api.tag);
 248         else
 249                 ospf6_asbr_redistribute_remove(api.type, ifindex, &api.prefix);
 250
 251         return 0;
 252 }
 253
 254 DEFUN (show_zebra,
 255        show_ospf6_zebra_cmd,
 256        "show ipv6 ospf6 zebra",
 257        SHOW_STR
 258        IPV6_STR
 259        OSPF6_STR
 260        ZEBRA_STR)
 261 {
 262         int i;
 263         if (zclient == NULL) {
 264                 vty_out(vty, "Not connected to zebra\n");
 265                 return CMD_SUCCESS;
 266         }
 267
 268         vty_out(vty, "Zebra Infomation\n");
 269         vty_out(vty, "  fail: %d\n", zclient->fail);
 270         vty_out(vty, "  redistribute default: %d\n",
 271                 vrf_bitmap_check(zclient->default_information, VRF_DEFAULT));
 272         vty_out(vty, "  redistribute:");
 273         for (i = 0; i < ZEBRA_ROUTE_MAX; i++) {
 274                 if (vrf_bitmap_check(zclient->redist[AFI_IP6][i], VRF_DEFAULT))
 275                         vty_out(vty, " %s", zebra_route_string(i));
 276         }
 277         vty_out(vty, "\n");
 278         return CMD_SUCCESS;
 279 }
 280
 281 #define ADD    0
 282 #define REM    1
 283 static void ospf6_zebra_route_update(int type, struct ospf6_route *request)
 284 {
 285         struct zapi_route api;
 286         char buf[PREFIX2STR_BUFFER];
 287         int nhcount;
 288         int ret = 0;
 289         struct prefix *dest;
 290
 291         if (IS_OSPF6_DEBUG_ZEBRA(SEND)) {
 292                 prefix2str(&request->prefix, buf, sizeof(buf));
 293                 zlog_debug("Send %s route: %s",
 294                            (type == REM ? "remove" : "add"), buf);
 295         }
 296
 297         if (zclient->sock < 0) {
 298                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 299                         zlog_debug("  Not connected to Zebra");
 300                 return;
 301         }
 302
 303         if (request->path.origin.adv_router == ospf6->router_id
 304             && (request->path.type == OSPF6_PATH_TYPE_EXTERNAL1
 305                 || request->path.type == OSPF6_PATH_TYPE_EXTERNAL2)) {
 306                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 307                         zlog_debug("  Ignore self-originated external route");
 308                 return;
 309         }
 310
 311         /* If removing is the best path and if there's another path,
 312            treat this request as add the secondary path */
 313         if (type == REM && ospf6_route_is_best(request) && request->next
 314             && ospf6_route_is_same(request, request->next)) {
 315                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 316                         zlog_debug(
 317                                 "  Best-path removal resulted Sencondary addition");
 318                 type = ADD;
 319                 request = request->next;
 320         }
 321
 322         /* Only the best path will be sent to zebra. */
 323         if (!ospf6_route_is_best(request)) {
 324                 /* this is not preferred best route, ignore */
 325                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 326                         zlog_debug("  Ignore non-best route");
 327                 return;
 328         }
 329
 330         nhcount = ospf6_route_num_nexthops(request);
 331         if (nhcount == 0) {
 332                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 333                         zlog_debug("  No nexthop, ignore");
 334                 return;
 335         }
 336
 337         dest = &request->prefix;
 338
 339         memset(&api, 0, sizeof(api));
 340         api.vrf_id = VRF_DEFAULT;
 341         api.type = ZEBRA_ROUTE_OSPF6;
 342         api.safi = SAFI_UNICAST;
 343         api.prefix = *dest;
 344         SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
 345         api.nexthop_num = MIN(nhcount, MULTIPATH_NUM);
 346         ospf6_route_zebra_copy_nexthops(request, api.nexthops, api.nexthop_num);
 347         SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
 348         api.metric = (request->path.metric_type == 2 ? request->path.u.cost_e2
 349                                                      : request->path.cost);
 350         if (request->path.tag) {
 351                 SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
 352                 api.tag = request->path.tag;
 353         }
 354
 355         SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
 356         api.distance =
 357                 ospf6_distance_apply((struct prefix_ipv6 *)dest, request);
 358
 359         if (type == REM)
 360                 ret = zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
 361         else
 362                 ret = zclient_route_send(ZEBRA_ROUTE_ADD, zclient, &api);
 363
 364         if (ret < 0)
 365                 zlog_err("zclient_route_send() %s failed: %s",
 366                          (type == REM ? "delete" : "add"),
 367                          safe_strerror(errno));
 368
 369         return;
 370 }
 371
 372 void ospf6_zebra_route_update_add(struct ospf6_route *request)
 373 {
 374         ospf6_zebra_route_update(ADD, request);
 375 }
 376
 377 void ospf6_zebra_route_update_remove(struct ospf6_route *request)
 378 {
 379         ospf6_zebra_route_update(REM, request);
 380 }
 381
 382 void ospf6_zebra_add_discard(struct ospf6_route *request)
 383 {
 384         struct zapi_route api;
 385         char buf[INET6_ADDRSTRLEN];
 386         struct prefix *dest = &request->prefix;
 387
 388         if (!CHECK_FLAG(request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED)) {
 389                 memset(&api, 0, sizeof(api));
 390                 api.vrf_id = VRF_DEFAULT;
 391                 api.type = ZEBRA_ROUTE_OSPF6;
 392                 api.safi = SAFI_UNICAST;
 393                 api.prefix = *dest;
 394                 zapi_route_set_blackhole(&api, BLACKHOLE_NULL);
 395
 396                 zclient_route_send(ZEBRA_ROUTE_ADD, zclient, &api);
 397
 398                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 399                         zlog_debug("Zebra: Route add discard %s/%d",
 400                                    inet_ntop(AF_INET6, &dest->u.prefix6, buf,
 401                                              INET6_ADDRSTRLEN),
 402                                    dest->prefixlen);
 403
 404                 SET_FLAG(request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED);
 405         } else {
 406                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 407                         zlog_debug(
 408                                 "Zebra: Blackhole route present already %s/%d",
 409                                 inet_ntop(AF_INET6, &dest->u.prefix6, buf,
 410                                           INET6_ADDRSTRLEN),
 411                                 dest->prefixlen);
 412         }
 413 }
 414
 415 void ospf6_zebra_delete_discard(struct ospf6_route *request)
 416 {
 417         struct zapi_route api;
 418         char buf[INET6_ADDRSTRLEN];
 419         struct prefix *dest = &request->prefix;
 420
 421         if (CHECK_FLAG(request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED)) {
 422                 memset(&api, 0, sizeof(api));
 423                 api.vrf_id = VRF_DEFAULT;
 424                 api.type = ZEBRA_ROUTE_OSPF6;
 425                 api.safi = SAFI_UNICAST;
 426                 api.prefix = *dest;
 427                 zapi_route_set_blackhole(&api, BLACKHOLE_NULL);
 428
 429                 zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
 430
 431                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 432                         zlog_debug("Zebra: Route delete discard %s/%d",
 433                                    inet_ntop(AF_INET6, &dest->u.prefix6, buf,
 434                                              INET6_ADDRSTRLEN),
 435                                    dest->prefixlen);
 436
 437                 UNSET_FLAG(request->flag, OSPF6_ROUTE_BLACKHOLE_ADDED);
 438         } else {
 439                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 440                         zlog_debug(
 441                                 "Zebra: Blackhole route already deleted %s/%d",
 442                                 inet_ntop(AF_INET6, &dest->u.prefix6, buf,
 443                                           INET6_ADDRSTRLEN),
 444                                 dest->prefixlen);
 445         }
 446 }
 447
 448 static struct ospf6_distance *ospf6_distance_new(void)
 449 {
 450         return XCALLOC(MTYPE_OSPF6_DISTANCE, sizeof(struct ospf6_distance));
 451 }
 452
 453 static void ospf6_distance_free(struct ospf6_distance *odistance)
 454 {
 455         XFREE(MTYPE_OSPF6_DISTANCE, odistance);
 456 }
 457
 458 int ospf6_distance_set(struct vty *vty, struct ospf6 *o,
 459                        const char *distance_str, const char *ip_str,
 460                        const char *access_list_str)
 461 {
 462         int ret;
 463         struct prefix_ipv6 p;
 464         uint8_t distance;
 465         struct route_node *rn;
 466         struct ospf6_distance *odistance;
 467
 468         ret = str2prefix_ipv6(ip_str, &p);
 469         if (ret == 0) {
 470                 vty_out(vty, "Malformed prefix\n");
 471                 return CMD_WARNING_CONFIG_FAILED;
 472         }
 473
 474         distance = atoi(distance_str);
 475
 476         /* Get OSPF6 distance node. */
 477         rn = route_node_get(o->distance_table, (struct prefix *)&p);
 478         if (rn->info) {
 479                 odistance = rn->info;
 480                 route_unlock_node(rn);
 481         } else {
 482                 odistance = ospf6_distance_new();
 483                 rn->info = odistance;
 484         }
 485
 486         /* Set distance value. */
 487         odistance->distance = distance;
 488
 489         /* Reset access-list configuration. */
 490         if (odistance->access_list) {
 491                 free(odistance->access_list);
 492                 odistance->access_list = NULL;
 493         }
 494         if (access_list_str)
 495                 odistance->access_list = strdup(access_list_str);
 496
 497         return CMD_SUCCESS;
 498 }
 499
 500 int ospf6_distance_unset(struct vty *vty, struct ospf6 *o,
 501                          const char *distance_str, const char *ip_str,
 502                          const char *access_list_str)
 503 {
 504         int ret;
 505         struct prefix_ipv6 p;
 506         struct route_node *rn;
 507         struct ospf6_distance *odistance;
 508
 509         ret = str2prefix_ipv6(ip_str, &p);
 510         if (ret == 0) {
 511                 vty_out(vty, "Malformed prefix\n");
 512                 return CMD_WARNING_CONFIG_FAILED;
 513         }
 514
 515         rn = route_node_lookup(o->distance_table, (struct prefix *)&p);
 516         if (!rn) {
 517                 vty_out(vty, "Cant't find specified prefix\n");
 518                 return CMD_WARNING_CONFIG_FAILED;
 519         }
 520
 521         odistance = rn->info;
 522
 523         if (odistance->access_list)
 524                 free(odistance->access_list);
 525         ospf6_distance_free(odistance);
 526
 527         rn->info = NULL;
 528         route_unlock_node(rn);
 529         route_unlock_node(rn);
 530
 531         return CMD_SUCCESS;
 532 }
 533
 534 void ospf6_distance_reset(struct ospf6 *o)
 535 {
 536         struct route_node *rn;
 537         struct ospf6_distance *odistance;
 538
 539         for (rn = route_top(o->distance_table); rn; rn = route_next(rn))
 540                 if ((odistance = rn->info) != NULL) {
 541                         if (odistance->access_list)
 542                                 free(odistance->access_list);
 543                         ospf6_distance_free(odistance);
 544                         rn->info = NULL;
 545                         route_unlock_node(rn);
 546                 }
 547 }
 548
 549 uint8_t ospf6_distance_apply(struct prefix_ipv6 *p, struct ospf6_route * or)
 550 {
 551         struct ospf6 *o;
 552
 553         o = ospf6;
 554         if (o == NULL)
 555                 return 0;
 556
 557         if (o->distance_intra)
 558                 if (or->path.type == OSPF6_PATH_TYPE_INTRA)
 559                         return o->distance_intra;
 560
 561         if (o->distance_inter)
 562                 if (or->path.type == OSPF6_PATH_TYPE_INTER)
 563                         return o->distance_inter;
 564
 565         if (o->distance_external)
 566                 if (or->path.type == OSPF6_PATH_TYPE_EXTERNAL1 ||
 567                     or->path.type == OSPF6_PATH_TYPE_EXTERNAL2)
 568                         return o->distance_external;
 569
 570         if (o->distance_all)
 571                 return o->distance_all;
 572
 573         return 0;
 574 }
 575
 576 static void ospf6_zebra_connected(struct zclient *zclient)
 577 {
 578         /* Send the client registration */
 579         bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER);
 580
 581         zclient_send_reg_requests(zclient, VRF_DEFAULT);
 582 }
 583
 584 void ospf6_zebra_init(struct thread_master *master)
 585 {
 586         /* Allocate zebra structure. */
 587         zclient = zclient_new_notify(master, &zclient_options_default);
 588         zclient_init(zclient, ZEBRA_ROUTE_OSPF6, 0, &ospf6d_privs);
 589         zclient->zebra_connected = ospf6_zebra_connected;
 590         zclient->router_id_update = ospf6_router_id_update_zebra;
 591         zclient->interface_add = ospf6_zebra_if_add;
 592         zclient->interface_delete = ospf6_zebra_if_del;
 593         zclient->interface_up = ospf6_zebra_if_state_update;
 594         zclient->interface_down = ospf6_zebra_if_state_update;
 595         zclient->interface_address_add = ospf6_zebra_if_address_update_add;
 596         zclient->interface_address_delete =
 597                 ospf6_zebra_if_address_update_delete;
 598         zclient->redistribute_route_add = ospf6_zebra_read_route;
 599         zclient->redistribute_route_del = ospf6_zebra_read_route;
 600
 601         /* Install command element for zebra node. */
 602         install_element(VIEW_NODE, &show_ospf6_zebra_cmd);
 603 }
 604
 605 /* Debug */
 606
 607 DEFUN (debug_ospf6_zebra_sendrecv,
 608        debug_ospf6_zebra_sendrecv_cmd,
 609        "debug ospf6 zebra [<send|recv>]",
 610        DEBUG_STR
 611        OSPF6_STR
 612        "Debug connection between zebra\n"
 613        "Debug Sending zebra\n"
 614        "Debug Receiving zebra\n"
 615       )
 616 {
 617         int idx_send_recv = 3;
 618         unsigned char level = 0;
 619
 620         if (argc == 4) {
 621                 if (strmatch(argv[idx_send_recv]->text, "send"))
 622                         level = OSPF6_DEBUG_ZEBRA_SEND;
 623                 else if (strmatch(argv[idx_send_recv]->text, "recv"))
 624                         level = OSPF6_DEBUG_ZEBRA_RECV;
 625         } else
 626                 level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
 627
 628         OSPF6_DEBUG_ZEBRA_ON(level);
 629         return CMD_SUCCESS;
 630 }
 631
 632 DEFUN (no_debug_ospf6_zebra_sendrecv,
 633        no_debug_ospf6_zebra_sendrecv_cmd,
 634        "no debug ospf6 zebra [<send|recv>]",
 635        NO_STR
 636        DEBUG_STR
 637        OSPF6_STR
 638        "Debug connection between zebra\n"
 639        "Debug Sending zebra\n"
 640        "Debug Receiving zebra\n"
 641       )
 642 {
 643         int idx_send_recv = 4;
 644         unsigned char level = 0;
 645
 646         if (argc == 5) {
 647                 if (strmatch(argv[idx_send_recv]->text, "send"))
 648                         level = OSPF6_DEBUG_ZEBRA_SEND;
 649                 else if (strmatch(argv[idx_send_recv]->text, "recv"))
 650                         level = OSPF6_DEBUG_ZEBRA_RECV;
 651         } else
 652                 level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
 653
 654         OSPF6_DEBUG_ZEBRA_OFF(level);
 655         return CMD_SUCCESS;
 656 }
 657
 658
 659 int config_write_ospf6_debug_zebra(struct vty *vty)
 660 {
 661         if (IS_OSPF6_DEBUG_ZEBRA(SEND) && IS_OSPF6_DEBUG_ZEBRA(RECV))
 662                 vty_out(vty, "debug ospf6 zebra\n");
 663         else {
 664                 if (IS_OSPF6_DEBUG_ZEBRA(SEND))
 665                         vty_out(vty, "debug ospf6 zebra send\n");
 666                 if (IS_OSPF6_DEBUG_ZEBRA(RECV))
 667                         vty_out(vty, "debug ospf6 zebra recv\n");
 668         }
 669         return 0;
 670 }
 671
 672 void install_element_ospf6_debug_zebra(void)
 673 {
 674         install_element(ENABLE_NODE, &debug_ospf6_zebra_sendrecv_cmd);
 675         install_element(ENABLE_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);
 676         install_element(CONFIG_NODE, &debug_ospf6_zebra_sendrecv_cmd);
 677         install_element(CONFIG_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);
 678 }