src/vnet/dpo/dvr_dpo.c

   1 /*
   2  * Copyright (c) 2016 Cisco and/or its affiliates.
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #include <vnet/dpo/dvr_dpo.h>
  17 #include <vnet/fib/fib_node.h>
  18 #include <vnet/ip/ip.h>
  19 #include <vnet/ethernet/ethernet.h>
  20 #include <vnet/l2/l2_input.h>
  21
  22 #ifndef CLIB_MARCH_VARIANT
  23 dvr_dpo_t *dvr_dpo_pool;
  24
  25 /**
  26  * The 'DB' of DVR DPOs.
  27  * There is one per-interface per-L3 proto, so this is a per-interface vector
  28  */
  29 static index_t *dvr_dpo_db[DPO_PROTO_NUM];
  30
  31 static dvr_dpo_t *
  32 dvr_dpo_alloc (void)
  33 {
  34     dvr_dpo_t *dd;
  35
  36     pool_get(dvr_dpo_pool, dd);
  37
  38     return (dd);
  39 }
  40
  41 static inline dvr_dpo_t *
  42 dvr_dpo_get_from_dpo (const dpo_id_t *dpo)
  43 {
  44     ASSERT(DPO_DVR == dpo->dpoi_type);
  45
  46     return (dvr_dpo_get(dpo->dpoi_index));
  47 }
  48
  49 static inline index_t
  50 dvr_dpo_get_index (dvr_dpo_t *dd)
  51 {
  52     return (dd - dvr_dpo_pool);
  53 }
  54
  55 static void
  56 dvr_dpo_lock (dpo_id_t *dpo)
  57 {
  58     dvr_dpo_t *dd;
  59
  60     dd = dvr_dpo_get_from_dpo(dpo);
  61     dd->dd_locks++;
  62 }
  63
  64 static void
  65 dvr_dpo_unlock (dpo_id_t *dpo)
  66 {
  67     dvr_dpo_t *dd;
  68
  69     dd = dvr_dpo_get_from_dpo(dpo);
  70     dd->dd_locks--;
  71
  72     if (0 == dd->dd_locks)
  73     {
  74         if (DPO_PROTO_IP4 == dd->dd_proto)
  75         {
  76             vnet_feature_enable_disable ("ip4-output", "ip4-dvr-reinject",
  77                                          dd->dd_sw_if_index, 0, 0, 0);
  78         }
  79         else
  80         {
  81             vnet_feature_enable_disable ("ip6-output", "ip6-dvr-reinject",
  82                                          dd->dd_sw_if_index, 0, 0, 0);
  83         }
  84
  85         dvr_dpo_db[dd->dd_proto][dd->dd_sw_if_index] = INDEX_INVALID;
  86         pool_put(dvr_dpo_pool, dd);
  87     }
  88 }
  89
  90 void
  91 dvr_dpo_add_or_lock (u32 sw_if_index,
  92                      dpo_proto_t dproto,
  93                      dpo_id_t *dpo)
  94 {
  95     l2_input_config_t *config;
  96     dvr_dpo_t *dd;
  97
  98     vec_validate_init_empty(dvr_dpo_db[dproto],
  99                             sw_if_index,
 100                             INDEX_INVALID);
 101
 102     if (INDEX_INVALID == dvr_dpo_db[dproto][sw_if_index])
 103     {
 104         dd = dvr_dpo_alloc();
 105
 106         dd->dd_sw_if_index = sw_if_index;
 107         dd->dd_proto = dproto;
 108
 109         dvr_dpo_db[dproto][sw_if_index] = dvr_dpo_get_index(dd);
 110
 111         config = l2input_intf_config (sw_if_index);
 112
 113         if (l2_input_is_bridge(config) ||
 114             l2_input_is_xconnect(config))
 115         {
 116             dd->dd_reinject = DVR_REINJECT_L2;
 117         }
 118         else
 119         {
 120             dd->dd_reinject = DVR_REINJECT_L3;
 121         }
 122
 123         /*
 124          * enable the reinject into L2 path feature on the interface
 125          */
 126         if (DPO_PROTO_IP4 == dproto)
 127             vnet_feature_enable_disable ("ip4-output", "ip4-dvr-reinject",
 128                                          dd->dd_sw_if_index, 1, 0, 0);
 129         else if (DPO_PROTO_IP6 == dproto)
 130             vnet_feature_enable_disable ("ip6-output", "ip6-dvr-reinject",
 131                                          dd->dd_sw_if_index, 1, 0, 0);
 132         else
 133             ASSERT(0);
 134     }
 135     else
 136     {
 137         dd = dvr_dpo_get(dvr_dpo_db[dproto][sw_if_index]);
 138     }
 139
 140     dpo_set(dpo, DPO_DVR, dproto, dvr_dpo_get_index(dd));
 141 }
 142 #endif /* CLIB_MARCH_VARIANT */
 143
 144
 145 static clib_error_t *
 146 dvr_dpo_interface_state_change (vnet_main_t * vnm,
 147                                       u32 sw_if_index,
 148                                       u32 flags)
 149 {
 150     /*
 151      */
 152     return (NULL);
 153 }
 154
 155 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(
 156     dvr_dpo_interface_state_change);
 157
 158 /**
 159  * @brief Registered callback for HW interface state changes
 160  */
 161 static clib_error_t *
 162 dvr_dpo_hw_interface_state_change (vnet_main_t * vnm,
 163                                          u32 hw_if_index,
 164                                          u32 flags)
 165 {
 166     return (NULL);
 167 }
 168
 169 VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(
 170     dvr_dpo_hw_interface_state_change);
 171
 172 static clib_error_t *
 173 dvr_dpo_interface_delete (vnet_main_t * vnm,
 174                                 u32 sw_if_index,
 175                                 u32 is_add)
 176 {
 177     return (NULL);
 178 }
 179
 180 VNET_SW_INTERFACE_ADD_DEL_FUNCTION(
 181     dvr_dpo_interface_delete);
 182
 183 #ifndef CLIB_MARCH_VARIANT
 184 static u8*
 185 format_dvr_reinject (u8* s, va_list *ap)
 186 {
 187     dvr_dpo_reinject_t ddr = va_arg(*ap, int);
 188
 189     switch (ddr)
 190     {
 191     case DVR_REINJECT_L2:
 192         s = format (s, "l2");
 193         break;
 194     case DVR_REINJECT_L3:
 195         s = format (s, "l3");
 196         break;
 197     }
 198     return (s);
 199 }
 200
 201 static u8*
 202 format_dvr_dpo (u8* s, va_list *ap)
 203 {
 204     index_t index = va_arg(*ap, index_t);
 205     CLIB_UNUSED(u32 indent) = va_arg(*ap, u32);
 206     vnet_main_t * vnm = vnet_get_main();
 207     dvr_dpo_t *dd = dvr_dpo_get(index);
 208
 209     return format (s, "%U-dvr-%U-dpo %U", format_dpo_proto, dd->dd_proto,
 210                    format_vnet_sw_if_index_name, vnm, dd->dd_sw_if_index,
 211                    format_dvr_reinject, dd->dd_reinject);
 212 }
 213
 214 static void
 215 dvr_dpo_mem_show (void)
 216 {
 217     fib_show_memory_usage("DVR",
 218                           pool_elts(dvr_dpo_pool),
 219                           pool_len(dvr_dpo_pool),
 220                           sizeof(dvr_dpo_t));
 221 }
 222
 223
 224 const static dpo_vft_t dvr_dpo_vft = {
 225     .dv_lock = dvr_dpo_lock,
 226     .dv_unlock = dvr_dpo_unlock,
 227     .dv_format = format_dvr_dpo,
 228     .dv_mem_show = dvr_dpo_mem_show,
 229 };
 230
 231 /**
 232  * @brief The per-protocol VLIB graph nodes that are assigned to a glean
 233  *        object.
 234  *
 235  * this means that these graph nodes are ones from which a glean is the
 236  * parent object in the DPO-graph.
 237  */
 238 const static char* const dvr_dpo_ip4_nodes[] =
 239 {
 240     "ip4-dvr-dpo",
 241     NULL,
 242 };
 243 const static char* const dvr_dpo_ip6_nodes[] =
 244 {
 245     "ip6-dvr-dpo",
 246     NULL,
 247 };
 248
 249 const static char* const * const dvr_dpo_nodes[DPO_PROTO_NUM] =
 250 {
 251     [DPO_PROTO_IP4]  = dvr_dpo_ip4_nodes,
 252     [DPO_PROTO_IP6]  = dvr_dpo_ip6_nodes,
 253 };
 254
 255 void
 256 dvr_dpo_module_init (void)
 257 {
 258     dpo_register(DPO_DVR,
 259                  &dvr_dpo_vft,
 260                  dvr_dpo_nodes);
 261 }
 262 #endif /* CLIB_MARCH_VARIANT */
 263
 264 /**
 265  * @brief Interface DPO trace data
 266  */
 267 typedef struct dvr_dpo_trace_t_
 268 {
 269     u32 sw_if_index;
 270 } dvr_dpo_trace_t;
 271
 272 always_inline uword
 273 dvr_dpo_inline (vlib_main_t * vm,
 274                 vlib_node_runtime_t * node,
 275                 vlib_frame_t * from_frame,
 276                 u8 is_ip6)
 277 {
 278     u32 n_left_from, next_index, * from, * to_next;
 279     ip_lookup_main_t *lm = (is_ip6?
 280                             &ip6_main.lookup_main:
 281                             &ip4_main.lookup_main);
 282
 283     from = vlib_frame_vector_args (from_frame);
 284     n_left_from = from_frame->n_vectors;
 285
 286     next_index = node->cached_next_index;
 287
 288     while (n_left_from > 0)
 289     {
 290         u32 n_left_to_next;
 291
 292         vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
 293
 294         while (n_left_from >= 4 && n_left_to_next > 2)
 295         {
 296             const dvr_dpo_t *dd0, *dd1;
 297             u32 bi0, ddi0, bi1, ddi1;
 298             vlib_buffer_t *b0, *b1;
 299             u32 next0, next1;
 300             u8 len0, len1;
 301
 302             bi0 = from[0];
 303             to_next[0] = bi0;
 304             bi1 = from[1];
 305             to_next[1] = bi1;
 306             from += 2;
 307             to_next += 2;
 308             n_left_from -= 2;
 309             n_left_to_next -= 2;
 310             next0 = next1 = 0;
 311
 312             b0 = vlib_get_buffer (vm, bi0);
 313             b1 = vlib_get_buffer (vm, bi1);
 314
 315             ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
 316             ddi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
 317             dd0 = dvr_dpo_get(ddi0);
 318             dd1 = dvr_dpo_get(ddi1);
 319
 320             vnet_buffer(b0)->sw_if_index[VLIB_TX] = dd0->dd_sw_if_index;
 321             vnet_buffer(b1)->sw_if_index[VLIB_TX] = dd1->dd_sw_if_index;
 322
 323             len0 = ((u8*)vlib_buffer_get_current(b0) -
 324                     (u8*)ethernet_buffer_get_header(b0));
 325             len1 = ((u8*)vlib_buffer_get_current(b1) -
 326                     (u8*)ethernet_buffer_get_header(b1));
 327             vnet_buffer(b0)->l2.l2_len =
 328                 vnet_buffer(b0)->ip.save_rewrite_length =
 329                    len0;
 330             vnet_buffer(b1)->l2.l2_len =
 331                 vnet_buffer(b1)->ip.save_rewrite_length =
 332                     len1;
 333
 334             b0->flags |= VNET_BUFFER_F_IS_DVR;
 335             b1->flags |= VNET_BUFFER_F_IS_DVR;
 336
 337             vlib_buffer_advance(b0, -len0);
 338             vlib_buffer_advance(b1, -len1);
 339
 340             vnet_feature_arc_start (lm->output_feature_arc_index,
 341                                     dd0->dd_sw_if_index, &next0, b0);
 342             vnet_feature_arc_start (lm->output_feature_arc_index,
 343                                     dd1->dd_sw_if_index, &next1, b1);
 344
 345             if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
 346             {
 347                 dvr_dpo_trace_t *tr0;
 348
 349                 tr0 = vlib_add_trace (vm, node, b0, sizeof (*tr0));
 350                 tr0->sw_if_index = dd0->dd_sw_if_index;
 351             }
 352             if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
 353             {
 354                 dvr_dpo_trace_t *tr1;
 355
 356                 tr1 = vlib_add_trace (vm, node, b1, sizeof (*tr1));
 357                 tr1->sw_if_index = dd1->dd_sw_if_index;
 358             }
 359
 360             vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
 361                                             n_left_to_next, bi0, bi1,
 362                                             next0, next1);
 363         }
 364
 365         while (n_left_from > 0 && n_left_to_next > 0)
 366         {
 367             const dvr_dpo_t * dd0;
 368             vlib_buffer_t * b0;
 369             u32 bi0, ddi0;
 370             u32 next0;
 371             u8 len0;
 372
 373             bi0 = from[0];
 374             to_next[0] = bi0;
 375             from += 1;
 376             to_next += 1;
 377             n_left_from -= 1;
 378             n_left_to_next -= 1;
 379             next0 = 0;
 380
 381             b0 = vlib_get_buffer (vm, bi0);
 382
 383             ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
 384             dd0 = dvr_dpo_get(ddi0);
 385
 386             vnet_buffer(b0)->sw_if_index[VLIB_TX] = dd0->dd_sw_if_index;
 387
 388             /*
 389              * take that, rewind it back...
 390              */
 391             len0 = ((u8*)vlib_buffer_get_current(b0) -
 392                     (u8*)ethernet_buffer_get_header(b0));
 393             vnet_buffer(b0)->l2.l2_len =
 394                 vnet_buffer(b0)->ip.save_rewrite_length =
 395                     len0;
 396             b0->flags |= VNET_BUFFER_F_IS_DVR;
 397             vlib_buffer_advance(b0, -len0);
 398
 399             /*
 400              * start processing the ipX output features
 401              */
 402             vnet_feature_arc_start(lm->output_feature_arc_index,
 403                                    dd0->dd_sw_if_index, &next0, b0);
 404
 405             if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
 406             {
 407                 dvr_dpo_trace_t *tr;
 408
 409                 tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
 410                 tr->sw_if_index = dd0->dd_sw_if_index;
 411             }
 412
 413             vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
 414                                             n_left_to_next, bi0,
 415                                             next0);
 416         }
 417         vlib_put_next_frame (vm, node, next_index, n_left_to_next);
 418     }
 419     return from_frame->n_vectors;
 420 }
 421
 422 static u8 *
 423 format_dvr_dpo_trace (u8 * s, va_list * args)
 424 {
 425     CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
 426     CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
 427     dvr_dpo_trace_t * t = va_arg (*args, dvr_dpo_trace_t *);
 428     u32 indent = format_get_indent (s);
 429     s = format (s, "%U sw_if_index:%d",
 430                 format_white_space, indent,
 431                 t->sw_if_index);
 432     return s;
 433 }
 434
 435 VLIB_NODE_FN (ip4_dvr_dpo_node) (vlib_main_t * vm,
 436              vlib_node_runtime_t * node,
 437              vlib_frame_t * from_frame)
 438 {
 439     return (dvr_dpo_inline(vm, node, from_frame, 0));
 440 }
 441
 442 VLIB_NODE_FN (ip6_dvr_dpo_node) (vlib_main_t * vm,
 443              vlib_node_runtime_t * node,
 444              vlib_frame_t * from_frame)
 445 {
 446     return (dvr_dpo_inline(vm, node, from_frame, 1));
 447 }
 448
 449 VLIB_REGISTER_NODE (ip4_dvr_dpo_node) = {
 450     .name = "ip4-dvr-dpo",
 451     .vector_size = sizeof (u32),
 452     .format_trace = format_dvr_dpo_trace,
 453     .sibling_of = "ip4-rewrite",
 454 };
 455 VLIB_REGISTER_NODE (ip6_dvr_dpo_node) = {
 456     .name = "ip6-dvr-dpo",
 457     .vector_size = sizeof (u32),
 458     .format_trace = format_dvr_dpo_trace,
 459     .sibling_of = "ip6-rewrite",
 460 };
 461
 462 typedef enum dvr_reinject_next_t_
 463 {
 464     DVR_REINJECT_NEXT_L2,
 465     DVR_REINJECT_NEXT_L3,
 466 } dvr_reinject_next_t;
 467
 468 always_inline uword
 469 dvr_reinject_inline (vlib_main_t * vm,
 470                      vlib_node_runtime_t * node,
 471                      vlib_frame_t * from_frame)
 472 {
 473     u32 n_left_from, next_index, * from, * to_next;
 474
 475     from = vlib_frame_vector_args (from_frame);
 476     n_left_from = from_frame->n_vectors;
 477
 478     next_index = node->cached_next_index;
 479
 480     while (n_left_from > 0)
 481     {
 482         u32 n_left_to_next;
 483
 484         vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
 485
 486         while (n_left_from >= 4 && n_left_to_next > 2)
 487         {
 488             dvr_reinject_next_t next0, next1;
 489             const dvr_dpo_t *dd0, *dd1;
 490             u32 bi0, bi1, ddi0, ddi1;
 491             vlib_buffer_t *b0, *b1;
 492
 493             bi0 = from[0];
 494             to_next[0] = bi0;
 495             bi1 = from[1];
 496             to_next[1] = bi1;
 497             from += 2;
 498             to_next += 2;
 499             n_left_from -= 2;
 500             n_left_to_next -= 2;
 501
 502             b0 = vlib_get_buffer (vm, bi0);
 503             b1 = vlib_get_buffer (vm, bi1);
 504
 505             if (b0->flags & VNET_BUFFER_F_IS_DVR)
 506             {
 507                 ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
 508                 dd0 = dvr_dpo_get(ddi0);
 509                 next0 = (dd0->dd_reinject == DVR_REINJECT_L2 ?
 510                          DVR_REINJECT_NEXT_L2 :
 511                          DVR_REINJECT_NEXT_L3);
 512             }
 513             else
 514                 vnet_feature_next( &next0, b0);
 515
 516             if (b1->flags & VNET_BUFFER_F_IS_DVR)
 517             {
 518                 ddi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
 519                 dd1 = dvr_dpo_get(ddi1);
 520                 next1 = (dd1->dd_reinject == DVR_REINJECT_L2 ?
 521                          DVR_REINJECT_NEXT_L2 :
 522                          DVR_REINJECT_NEXT_L3);
 523             }
 524             else
 525                 vnet_feature_next( &next1, b1);
 526
 527             if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
 528             {
 529                 dvr_dpo_trace_t *tr0;
 530
 531                 tr0 = vlib_add_trace (vm, node, b0, sizeof (*tr0));
 532                 tr0->sw_if_index = vnet_buffer(b0)->sw_if_index[VLIB_TX];
 533             }
 534             if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
 535             {
 536                 dvr_dpo_trace_t *tr1;
 537
 538                 tr1 = vlib_add_trace (vm, node, b1, sizeof (*tr1));
 539                 tr1->sw_if_index = vnet_buffer(b1)->sw_if_index[VLIB_TX];
 540             }
 541
 542             vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
 543                                             n_left_to_next, bi0, bi1,
 544                                             next0, next1);
 545         }
 546
 547         while (n_left_from > 0 && n_left_to_next > 0)
 548         {
 549             dvr_reinject_next_t next0;
 550             const dvr_dpo_t *dd0;
 551             vlib_buffer_t * b0;
 552             u32 bi0, ddi0;
 553
 554             bi0 = from[0];
 555             to_next[0] = bi0;
 556             from += 1;
 557             to_next += 1;
 558             n_left_from -= 1;
 559             n_left_to_next -= 1;
 560
 561             b0 = vlib_get_buffer (vm, bi0);
 562
 563             if (b0->flags & VNET_BUFFER_F_IS_DVR)
 564             {
 565                 ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
 566                 dd0 = dvr_dpo_get(ddi0);
 567                 next0 = (dd0->dd_reinject == DVR_REINJECT_L2 ?
 568                          DVR_REINJECT_NEXT_L2 :
 569                          DVR_REINJECT_NEXT_L3);
 570             }
 571             else
 572                 vnet_feature_next( &next0, b0);
 573
 574             if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
 575             {
 576                 dvr_dpo_trace_t *tr;
 577
 578                 tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
 579                 tr->sw_if_index = vnet_buffer(b0)->sw_if_index[VLIB_TX];
 580             }
 581
 582             vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
 583                                             n_left_to_next, bi0, next0);
 584         }
 585         vlib_put_next_frame (vm, node, next_index, n_left_to_next);
 586     }
 587     return from_frame->n_vectors;
 588 }
 589
 590 VLIB_NODE_FN (ip4_dvr_reinject_node) (vlib_main_t * vm,
 591                   vlib_node_runtime_t * node,
 592                   vlib_frame_t * from_frame)
 593 {
 594     return (dvr_reinject_inline(vm, node, from_frame));
 595 }
 596
 597 VLIB_NODE_FN (ip6_dvr_reinject_node) (vlib_main_t * vm,
 598                   vlib_node_runtime_t * node,
 599                   vlib_frame_t * from_frame)
 600 {
 601     return (dvr_reinject_inline(vm, node, from_frame));
 602 }
 603
 604 VLIB_REGISTER_NODE (ip4_dvr_reinject_node) = {
 605     .name = "ip4-dvr-reinject",
 606     .vector_size = sizeof (u32),
 607     .format_trace = format_dvr_dpo_trace,
 608
 609     .n_next_nodes = 1,
 610     .next_nodes = {
 611         [DVR_REINJECT_NEXT_L2] = "l2-output",
 612         [DVR_REINJECT_NEXT_L3] = "interface-output",
 613     },
 614 };
 615
 616 VLIB_REGISTER_NODE (ip6_dvr_reinject_node) = {
 617     .name = "ip6-dvr-reinject",
 618     .vector_size = sizeof (u32),
 619     .format_trace = format_dvr_dpo_trace,
 620
 621     .n_next_nodes = 1,
 622     .next_nodes = {
 623         [DVR_REINJECT_NEXT_L2] = "l2-output",
 624         [DVR_REINJECT_NEXT_L3] = "interface-output",
 625     },
 626 };
 627
 628 VNET_FEATURE_INIT (ip4_dvr_reinject_feat_node, static) =
 629 {
 630   .arc_name = "ip4-output",
 631   .node_name = "ip4-dvr-reinject",
 632 };
 633 VNET_FEATURE_INIT (ip6_dvr_reinject_feat_node, static) =
 634 {
 635   .arc_name = "ip6-output",
 636   .node_name = "ip6-dvr-reinject",
 637 };
 638