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",
 210                    format_dpo_proto, dd->dd_proto,
 211                    format_vnet_sw_interface_name,
 212                    vnm,
 213                    vnet_get_sw_interface(vnm, dd->dd_sw_if_index),
 214                    format_dvr_reinject, dd->dd_reinject));
 215 }
 216
 217 static void
 218 dvr_dpo_mem_show (void)
 219 {
 220     fib_show_memory_usage("DVR",
 221                           pool_elts(dvr_dpo_pool),
 222                           pool_len(dvr_dpo_pool),
 223                           sizeof(dvr_dpo_t));
 224 }
 225
 226
 227 const static dpo_vft_t dvr_dpo_vft = {
 228     .dv_lock = dvr_dpo_lock,
 229     .dv_unlock = dvr_dpo_unlock,
 230     .dv_format = format_dvr_dpo,
 231     .dv_mem_show = dvr_dpo_mem_show,
 232 };
 233
 234 /**
 235  * @brief The per-protocol VLIB graph nodes that are assigned to a glean
 236  *        object.
 237  *
 238  * this means that these graph nodes are ones from which a glean is the
 239  * parent object in the DPO-graph.
 240  */
 241 const static char* const dvr_dpo_ip4_nodes[] =
 242 {
 243     "ip4-dvr-dpo",
 244     NULL,
 245 };
 246 const static char* const dvr_dpo_ip6_nodes[] =
 247 {
 248     "ip6-dvr-dpo",
 249     NULL,
 250 };
 251
 252 const static char* const * const dvr_dpo_nodes[DPO_PROTO_NUM] =
 253 {
 254     [DPO_PROTO_IP4]  = dvr_dpo_ip4_nodes,
 255     [DPO_PROTO_IP6]  = dvr_dpo_ip6_nodes,
 256 };
 257
 258 void
 259 dvr_dpo_module_init (void)
 260 {
 261     dpo_register(DPO_DVR,
 262                  &dvr_dpo_vft,
 263                  dvr_dpo_nodes);
 264 }
 265 #endif /* CLIB_MARCH_VARIANT */
 266
 267 /**
 268  * @brief Interface DPO trace data
 269  */
 270 typedef struct dvr_dpo_trace_t_
 271 {
 272     u32 sw_if_index;
 273 } dvr_dpo_trace_t;
 274
 275 always_inline uword
 276 dvr_dpo_inline (vlib_main_t * vm,
 277                 vlib_node_runtime_t * node,
 278                 vlib_frame_t * from_frame,
 279                 u8 is_ip6)
 280 {
 281     u32 n_left_from, next_index, * from, * to_next;
 282     ip_lookup_main_t *lm = (is_ip6?
 283                             &ip6_main.lookup_main:
 284                             &ip4_main.lookup_main);
 285
 286     from = vlib_frame_vector_args (from_frame);
 287     n_left_from = from_frame->n_vectors;
 288
 289     next_index = node->cached_next_index;
 290
 291     while (n_left_from > 0)
 292     {
 293         u32 n_left_to_next;
 294
 295         vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
 296
 297         while (n_left_from >= 4 && n_left_to_next > 2)
 298         {
 299             const dvr_dpo_t *dd0, *dd1;
 300             u32 bi0, ddi0, bi1, ddi1;
 301             vlib_buffer_t *b0, *b1;
 302             u32 next0, next1;
 303             u8 len0, len1;
 304
 305             bi0 = from[0];
 306             to_next[0] = bi0;
 307             bi1 = from[1];
 308             to_next[1] = bi1;
 309             from += 2;
 310             to_next += 2;
 311             n_left_from -= 2;
 312             n_left_to_next -= 2;
 313             next0 = next1 = 0;
 314
 315             b0 = vlib_get_buffer (vm, bi0);
 316             b1 = vlib_get_buffer (vm, bi1);
 317
 318             ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
 319             ddi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
 320             dd0 = dvr_dpo_get(ddi0);
 321             dd1 = dvr_dpo_get(ddi1);
 322
 323             vnet_buffer(b0)->sw_if_index[VLIB_TX] = dd0->dd_sw_if_index;
 324             vnet_buffer(b1)->sw_if_index[VLIB_TX] = dd1->dd_sw_if_index;
 325
 326             len0 = ((u8*)vlib_buffer_get_current(b0) -
 327                     (u8*)ethernet_buffer_get_header(b0));
 328             len1 = ((u8*)vlib_buffer_get_current(b1) -
 329                     (u8*)ethernet_buffer_get_header(b1));
 330             vnet_buffer(b0)->l2.l2_len =
 331                 vnet_buffer(b0)->ip.save_rewrite_length =
 332                    len0;
 333             vnet_buffer(b1)->l2.l2_len =
 334                 vnet_buffer(b1)->ip.save_rewrite_length =
 335                     len1;
 336
 337             b0->flags |= VNET_BUFFER_F_IS_DVR;
 338             b1->flags |= VNET_BUFFER_F_IS_DVR;
 339
 340             vlib_buffer_advance(b0, -len0);
 341             vlib_buffer_advance(b1, -len1);
 342
 343             vnet_feature_arc_start (lm->output_feature_arc_index,
 344                                     dd0->dd_sw_if_index, &next0, b0);
 345             vnet_feature_arc_start (lm->output_feature_arc_index,
 346                                     dd1->dd_sw_if_index, &next1, b1);
 347
 348             if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
 349             {
 350                 dvr_dpo_trace_t *tr0;
 351
 352                 tr0 = vlib_add_trace (vm, node, b0, sizeof (*tr0));
 353                 tr0->sw_if_index = dd0->dd_sw_if_index;
 354             }
 355             if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
 356             {
 357                 dvr_dpo_trace_t *tr1;
 358
 359                 tr1 = vlib_add_trace (vm, node, b1, sizeof (*tr1));
 360                 tr1->sw_if_index = dd1->dd_sw_if_index;
 361             }
 362
 363             vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
 364                                             n_left_to_next, bi0, bi1,
 365                                             next0, next1);
 366         }
 367
 368         while (n_left_from > 0 && n_left_to_next > 0)
 369         {
 370             const dvr_dpo_t * dd0;
 371             vlib_buffer_t * b0;
 372             u32 bi0, ddi0;
 373             u32 next0;
 374             u8 len0;
 375
 376             bi0 = from[0];
 377             to_next[0] = bi0;
 378             from += 1;
 379             to_next += 1;
 380             n_left_from -= 1;
 381             n_left_to_next -= 1;
 382             next0 = 0;
 383
 384             b0 = vlib_get_buffer (vm, bi0);
 385
 386             ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
 387             dd0 = dvr_dpo_get(ddi0);
 388
 389             vnet_buffer(b0)->sw_if_index[VLIB_TX] = dd0->dd_sw_if_index;
 390
 391             /*
 392              * take that, rewind it back...
 393              */
 394             len0 = ((u8*)vlib_buffer_get_current(b0) -
 395                     (u8*)ethernet_buffer_get_header(b0));
 396             vnet_buffer(b0)->l2.l2_len =
 397                 vnet_buffer(b0)->ip.save_rewrite_length =
 398                     len0;
 399             b0->flags |= VNET_BUFFER_F_IS_DVR;
 400             vlib_buffer_advance(b0, -len0);
 401
 402             /*
 403              * start processing the ipX output features
 404              */
 405             vnet_feature_arc_start(lm->output_feature_arc_index,
 406                                    dd0->dd_sw_if_index, &next0, b0);
 407
 408             if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
 409             {
 410                 dvr_dpo_trace_t *tr;
 411
 412                 tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
 413                 tr->sw_if_index = dd0->dd_sw_if_index;
 414             }
 415
 416             vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
 417                                             n_left_to_next, bi0,
 418                                             next0);
 419         }
 420         vlib_put_next_frame (vm, node, next_index, n_left_to_next);
 421     }
 422     return from_frame->n_vectors;
 423 }
 424
 425 static u8 *
 426 format_dvr_dpo_trace (u8 * s, va_list * args)
 427 {
 428     CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
 429     CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
 430     dvr_dpo_trace_t * t = va_arg (*args, dvr_dpo_trace_t *);
 431     u32 indent = format_get_indent (s);
 432     s = format (s, "%U sw_if_index:%d",
 433                 format_white_space, indent,
 434                 t->sw_if_index);
 435     return s;
 436 }
 437
 438 VLIB_NODE_FN (ip4_dvr_dpo_node) (vlib_main_t * vm,
 439              vlib_node_runtime_t * node,
 440              vlib_frame_t * from_frame)
 441 {
 442     return (dvr_dpo_inline(vm, node, from_frame, 0));
 443 }
 444
 445 VLIB_NODE_FN (ip6_dvr_dpo_node) (vlib_main_t * vm,
 446              vlib_node_runtime_t * node,
 447              vlib_frame_t * from_frame)
 448 {
 449     return (dvr_dpo_inline(vm, node, from_frame, 1));
 450 }
 451
 452 VLIB_REGISTER_NODE (ip4_dvr_dpo_node) = {
 453     .name = "ip4-dvr-dpo",
 454     .vector_size = sizeof (u32),
 455     .format_trace = format_dvr_dpo_trace,
 456     .sibling_of = "ip4-rewrite",
 457 };
 458 VLIB_REGISTER_NODE (ip6_dvr_dpo_node) = {
 459     .name = "ip6-dvr-dpo",
 460     .vector_size = sizeof (u32),
 461     .format_trace = format_dvr_dpo_trace,
 462     .sibling_of = "ip6-rewrite",
 463 };
 464
 465 typedef enum dvr_reinject_next_t_
 466 {
 467     DVR_REINJECT_NEXT_L2,
 468     DVR_REINJECT_NEXT_L3,
 469 } dvr_reinject_next_t;
 470
 471 always_inline uword
 472 dvr_reinject_inline (vlib_main_t * vm,
 473                      vlib_node_runtime_t * node,
 474                      vlib_frame_t * from_frame)
 475 {
 476     u32 n_left_from, next_index, * from, * to_next;
 477
 478     from = vlib_frame_vector_args (from_frame);
 479     n_left_from = from_frame->n_vectors;
 480
 481     next_index = node->cached_next_index;
 482
 483     while (n_left_from > 0)
 484     {
 485         u32 n_left_to_next;
 486
 487         vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
 488
 489         while (n_left_from >= 4 && n_left_to_next > 2)
 490         {
 491             dvr_reinject_next_t next0, next1;
 492             const dvr_dpo_t *dd0, *dd1;
 493             u32 bi0, bi1, ddi0, ddi1;
 494             vlib_buffer_t *b0, *b1;
 495
 496             bi0 = from[0];
 497             to_next[0] = bi0;
 498             bi1 = from[1];
 499             to_next[1] = bi1;
 500             from += 2;
 501             to_next += 2;
 502             n_left_from -= 2;
 503             n_left_to_next -= 2;
 504
 505             b0 = vlib_get_buffer (vm, bi0);
 506             b1 = vlib_get_buffer (vm, bi1);
 507
 508             if (b0->flags & VNET_BUFFER_F_IS_DVR)
 509             {
 510                 ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
 511                 dd0 = dvr_dpo_get(ddi0);
 512                 next0 = (dd0->dd_reinject == DVR_REINJECT_L2 ?
 513                          DVR_REINJECT_NEXT_L2 :
 514                          DVR_REINJECT_NEXT_L3);
 515             }
 516             else
 517                 vnet_feature_next( &next0, b0);
 518
 519             if (b1->flags & VNET_BUFFER_F_IS_DVR)
 520             {
 521                 ddi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
 522                 dd1 = dvr_dpo_get(ddi1);
 523                 next1 = (dd1->dd_reinject == DVR_REINJECT_L2 ?
 524                          DVR_REINJECT_NEXT_L2 :
 525                          DVR_REINJECT_NEXT_L3);
 526             }
 527             else
 528                 vnet_feature_next( &next1, b1);
 529
 530             if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
 531             {
 532                 dvr_dpo_trace_t *tr0;
 533
 534                 tr0 = vlib_add_trace (vm, node, b0, sizeof (*tr0));
 535                 tr0->sw_if_index = vnet_buffer(b0)->sw_if_index[VLIB_TX];
 536             }
 537             if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
 538             {
 539                 dvr_dpo_trace_t *tr1;
 540
 541                 tr1 = vlib_add_trace (vm, node, b1, sizeof (*tr1));
 542                 tr1->sw_if_index = vnet_buffer(b1)->sw_if_index[VLIB_TX];
 543             }
 544
 545             vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
 546                                             n_left_to_next, bi0, bi1,
 547                                             next0, next1);
 548         }
 549
 550         while (n_left_from > 0 && n_left_to_next > 0)
 551         {
 552             dvr_reinject_next_t next0;
 553             const dvr_dpo_t *dd0;
 554             vlib_buffer_t * b0;
 555             u32 bi0, ddi0;
 556
 557             bi0 = from[0];
 558             to_next[0] = bi0;
 559             from += 1;
 560             to_next += 1;
 561             n_left_from -= 1;
 562             n_left_to_next -= 1;
 563
 564             b0 = vlib_get_buffer (vm, bi0);
 565
 566             if (b0->flags & VNET_BUFFER_F_IS_DVR)
 567             {
 568                 ddi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
 569                 dd0 = dvr_dpo_get(ddi0);
 570                 next0 = (dd0->dd_reinject == DVR_REINJECT_L2 ?
 571                          DVR_REINJECT_NEXT_L2 :
 572                          DVR_REINJECT_NEXT_L3);
 573             }
 574             else
 575                 vnet_feature_next( &next0, b0);
 576
 577             if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
 578             {
 579                 dvr_dpo_trace_t *tr;
 580
 581                 tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
 582                 tr->sw_if_index = vnet_buffer(b0)->sw_if_index[VLIB_TX];
 583             }
 584
 585             vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
 586                                             n_left_to_next, bi0, next0);
 587         }
 588         vlib_put_next_frame (vm, node, next_index, n_left_to_next);
 589     }
 590     return from_frame->n_vectors;
 591 }
 592
 593 VLIB_NODE_FN (ip4_dvr_reinject_node) (vlib_main_t * vm,
 594                   vlib_node_runtime_t * node,
 595                   vlib_frame_t * from_frame)
 596 {
 597     return (dvr_reinject_inline(vm, node, from_frame));
 598 }
 599
 600 VLIB_NODE_FN (ip6_dvr_reinject_node) (vlib_main_t * vm,
 601                   vlib_node_runtime_t * node,
 602                   vlib_frame_t * from_frame)
 603 {
 604     return (dvr_reinject_inline(vm, node, from_frame));
 605 }
 606
 607 VLIB_REGISTER_NODE (ip4_dvr_reinject_node) = {
 608     .name = "ip4-dvr-reinject",
 609     .vector_size = sizeof (u32),
 610     .format_trace = format_dvr_dpo_trace,
 611
 612     .n_next_nodes = 1,
 613     .next_nodes = {
 614         [DVR_REINJECT_NEXT_L2] = "l2-output",
 615         [DVR_REINJECT_NEXT_L3] = "interface-output",
 616     },
 617 };
 618
 619 VLIB_REGISTER_NODE (ip6_dvr_reinject_node) = {
 620     .name = "ip6-dvr-reinject",
 621     .vector_size = sizeof (u32),
 622     .format_trace = format_dvr_dpo_trace,
 623
 624     .n_next_nodes = 1,
 625     .next_nodes = {
 626         [DVR_REINJECT_NEXT_L2] = "l2-output",
 627         [DVR_REINJECT_NEXT_L3] = "interface-output",
 628     },
 629 };
 630
 631 VNET_FEATURE_INIT (ip4_dvr_reinject_feat_node, static) =
 632 {
 633   .arc_name = "ip4-output",
 634   .node_name = "ip4-dvr-reinject",
 635   .runs_after = VNET_FEATURES ("nat44-in2out-output",
 636                                "acl-plugin-out-ip4-fa"),
 637 };
 638 VNET_FEATURE_INIT (ip6_dvr_reinject_feat_node, static) =
 639 {
 640   .arc_name = "ip6-output",
 641   .node_name = "ip6-dvr-reinject",
 642   .runs_after = VNET_FEATURES ("acl-plugin-out-ip6-fa"),
 643 };
 644