src/vnet/vxlan-gpe/decap.c

   1 /*
   2  * decap.c - decapsulate VXLAN GPE
   3  *
   4  * Copyright (c) 2013 Cisco and/or its affiliates.
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at:
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17 /**
  18  *  @file
  19  *  @brief Functions for decapsulating VXLAN GPE tunnels
  20  *
  21 */
  22
  23 #include <vlib/vlib.h>
  24 #include <vnet/udp/udp_local.h>
  25 #include <vnet/vxlan-gpe/vxlan_gpe.h>
  26
  27 /**
  28  * @brief Struct for VXLAN GPE decap packet tracing
  29  *
  30  */
  31 typedef struct
  32 {
  33   u32 next_index;
  34   u32 tunnel_index;
  35   u32 error;
  36 } vxlan_gpe_rx_trace_t;
  37
  38 /**
  39  * @brief Tracing function for VXLAN GPE packet decapsulation
  40  *
  41  * @param *s
  42  * @param *args
  43  *
  44  * @return *s
  45  *
  46  */
  47 static u8 *
  48 format_vxlan_gpe_rx_trace (u8 * s, va_list * args)
  49 {
  50   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
  51   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
  52   vxlan_gpe_rx_trace_t *t = va_arg (*args, vxlan_gpe_rx_trace_t *);
  53
  54   if (t->tunnel_index != ~0)
  55     {
  56       s = format (s, "VXLAN-GPE: tunnel %d next %d error %d", t->tunnel_index,
  57                   t->next_index, t->error);
  58     }
  59   else
  60     {
  61       s = format (s, "VXLAN-GPE: no tunnel next %d error %d\n", t->next_index,
  62                   t->error);
  63     }
  64   return s;
  65 }
  66
  67 /**
  68  * @brief Tracing function for VXLAN GPE packet decapsulation including length
  69  *
  70  * @param *s
  71  * @param *args
  72  *
  73  * @return *s
  74  *
  75  */
  76 static u8 *
  77 format_vxlan_gpe_with_length (u8 * s, va_list * args)
  78 {
  79   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
  80   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
  81
  82
  83   return s;
  84 }
  85
  86 /**
  87  * @brief Common processing for IPv4 and IPv6 VXLAN GPE decap dispatch functions
  88  *
  89  * It is worth noting that other than trivial UDP forwarding (transit), VXLAN GPE
  90  * tunnels are "terminate local". This means that there is no "TX" interface for this
  91  * decap case, so that field in the buffer_metadata can be "used for something else".
  92  * The something else in this case is, for the IPv4/IPv6 inner-packet type case, the
  93  * FIB index used to look up the inner-packet's adjacency.
  94  *
  95  *      vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index;
  96  *
  97  * @param *vm
  98  * @param *node
  99  * @param *from_frame
 100  * @param is_ip4
 101  *
 102  * @return from_frame->n_vectors
 103  *
 104  */
 105 always_inline uword
 106 vxlan_gpe_input (vlib_main_t * vm,
 107                  vlib_node_runtime_t * node,
 108                  vlib_frame_t * from_frame, u8 is_ip4)
 109 {
 110   u32 n_left_from, next_index, *from, *to_next;
 111   vxlan_gpe_main_t *nngm = &vxlan_gpe_main;
 112   vnet_main_t *vnm = nngm->vnet_main;
 113   vnet_interface_main_t *im = &vnm->interface_main;
 114   u32 last_tunnel_index = ~0;
 115   vxlan4_gpe_tunnel_key_t last_key4;
 116   vxlan6_gpe_tunnel_key_t last_key6;
 117   u32 pkts_decapsulated = 0;
 118   u32 thread_index = vm->thread_index;
 119   u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
 120
 121   if (is_ip4)
 122     clib_memset (&last_key4, 0xff, sizeof (last_key4));
 123   else
 124     clib_memset (&last_key6, 0xff, sizeof (last_key6));
 125
 126   from = vlib_frame_vector_args (from_frame);
 127   n_left_from = from_frame->n_vectors;
 128
 129   next_index = node->cached_next_index;
 130   stats_sw_if_index = node->runtime_data[0];
 131   stats_n_packets = stats_n_bytes = 0;
 132
 133   while (n_left_from > 0)
 134     {
 135       u32 n_left_to_next;
 136
 137       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
 138
 139       while (n_left_from >= 4 && n_left_to_next >= 2)
 140         {
 141           u32 bi0, bi1;
 142           vlib_buffer_t *b0, *b1;
 143           u32 next0, next1;
 144           ip4_vxlan_gpe_header_t *iuvn4_0, *iuvn4_1;
 145           ip6_vxlan_gpe_header_t *iuvn6_0, *iuvn6_1;
 146           uword *p0, *p1;
 147           u32 tunnel_index0, tunnel_index1;
 148           vxlan_gpe_tunnel_t *t0, *t1;
 149           vxlan4_gpe_tunnel_key_t key4_0, key4_1;
 150           vxlan6_gpe_tunnel_key_t key6_0, key6_1;
 151           u32 error0, error1;
 152           u32 sw_if_index0, sw_if_index1, len0, len1;
 153
 154           /* Prefetch next iteration. */
 155           {
 156             vlib_buffer_t *p2, *p3;
 157
 158             p2 = vlib_get_buffer (vm, from[2]);
 159             p3 = vlib_get_buffer (vm, from[3]);
 160
 161             vlib_prefetch_buffer_header (p2, LOAD);
 162             vlib_prefetch_buffer_header (p3, LOAD);
 163
 164             CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
 165             CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
 166           }
 167
 168           bi0 = from[0];
 169           bi1 = from[1];
 170           to_next[0] = bi0;
 171           to_next[1] = bi1;
 172           from += 2;
 173           to_next += 2;
 174           n_left_to_next -= 2;
 175           n_left_from -= 2;
 176
 177           b0 = vlib_get_buffer (vm, bi0);
 178           b1 = vlib_get_buffer (vm, bi1);
 179
 180           if (is_ip4)
 181             {
 182               /* udp leaves current_data pointing at the vxlan-gpe header */
 183               vlib_buffer_advance (b0,
 184                                    -(word) (sizeof (udp_header_t) +
 185                                             sizeof (ip4_header_t)));
 186               vlib_buffer_advance (b1,
 187                                    -(word) (sizeof (udp_header_t) +
 188                                             sizeof (ip4_header_t)));
 189
 190               iuvn4_0 = vlib_buffer_get_current (b0);
 191               iuvn4_1 = vlib_buffer_get_current (b1);
 192
 193               /* pop (ip, udp, vxlan) */
 194               vlib_buffer_advance (b0, sizeof (*iuvn4_0));
 195               vlib_buffer_advance (b1, sizeof (*iuvn4_1));
 196             }
 197           else
 198             {
 199               /* udp leaves current_data pointing at the vxlan-gpe header */
 200               vlib_buffer_advance (b0,
 201                                    -(word) (sizeof (udp_header_t) +
 202                                             sizeof (ip6_header_t)));
 203               vlib_buffer_advance (b1,
 204                                    -(word) (sizeof (udp_header_t) +
 205                                             sizeof (ip6_header_t)));
 206
 207               iuvn6_0 = vlib_buffer_get_current (b0);
 208               iuvn6_1 = vlib_buffer_get_current (b1);
 209
 210               /* pop (ip, udp, vxlan) */
 211               vlib_buffer_advance (b0, sizeof (*iuvn6_0));
 212               vlib_buffer_advance (b1, sizeof (*iuvn6_1));
 213             }
 214
 215           tunnel_index0 = ~0;
 216           tunnel_index1 = ~0;
 217           error0 = 0;
 218           error1 = 0;
 219
 220           if (is_ip4)
 221             {
 222               next0 =
 223                 (iuvn4_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
 224                 nngm->decap_next_node_list[iuvn4_0->vxlan.protocol] :
 225                 VXLAN_GPE_INPUT_NEXT_DROP;
 226               next1 =
 227                 (iuvn4_1->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
 228                 nngm->decap_next_node_list[iuvn4_1->vxlan.protocol] :
 229                 VXLAN_GPE_INPUT_NEXT_DROP;
 230
 231               key4_0.local = iuvn4_0->ip4.dst_address.as_u32;
 232               key4_1.local = iuvn4_1->ip4.dst_address.as_u32;
 233
 234               key4_0.remote = iuvn4_0->ip4.src_address.as_u32;
 235               key4_1.remote = iuvn4_1->ip4.src_address.as_u32;
 236
 237               key4_0.vni = iuvn4_0->vxlan.vni_res;
 238               key4_1.vni = iuvn4_1->vxlan.vni_res;
 239
 240               key4_0.pad = 0;
 241               key4_1.pad = 0;
 242             }
 243           else                  /* is_ip6 */
 244             {
 245               next0 = (iuvn6_0->vxlan.protocol < node->n_next_nodes) ?
 246                 iuvn6_0->vxlan.protocol : VXLAN_GPE_INPUT_NEXT_DROP;
 247               next1 = (iuvn6_1->vxlan.protocol < node->n_next_nodes) ?
 248                 iuvn6_1->vxlan.protocol : VXLAN_GPE_INPUT_NEXT_DROP;
 249
 250               key6_0.local.as_u64[0] = iuvn6_0->ip6.dst_address.as_u64[0];
 251               key6_0.local.as_u64[1] = iuvn6_0->ip6.dst_address.as_u64[1];
 252               key6_1.local.as_u64[0] = iuvn6_1->ip6.dst_address.as_u64[0];
 253               key6_1.local.as_u64[1] = iuvn6_1->ip6.dst_address.as_u64[1];
 254
 255               key6_0.remote.as_u64[0] = iuvn6_0->ip6.src_address.as_u64[0];
 256               key6_0.remote.as_u64[1] = iuvn6_0->ip6.src_address.as_u64[1];
 257               key6_1.remote.as_u64[0] = iuvn6_1->ip6.src_address.as_u64[0];
 258               key6_1.remote.as_u64[1] = iuvn6_1->ip6.src_address.as_u64[1];
 259
 260               key6_0.vni = iuvn6_0->vxlan.vni_res;
 261               key6_1.vni = iuvn6_1->vxlan.vni_res;
 262             }
 263
 264           /* Processing packet 0 */
 265           if (is_ip4)
 266             {
 267               /* Processing for key4_0 */
 268               if (PREDICT_FALSE ((key4_0.as_u64[0] != last_key4.as_u64[0])
 269                                  || (key4_0.as_u64[1] !=
 270                                      last_key4.as_u64[1])))
 271                 {
 272                   p0 = hash_get_mem (nngm->vxlan4_gpe_tunnel_by_key, &key4_0);
 273
 274                   if (p0 == 0)
 275                     {
 276                       error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
 277                       goto trace0;
 278                     }
 279
 280                   last_key4.as_u64[0] = key4_0.as_u64[0];
 281                   last_key4.as_u64[1] = key4_0.as_u64[1];
 282                   tunnel_index0 = last_tunnel_index = p0[0];
 283                 }
 284               else
 285                 tunnel_index0 = last_tunnel_index;
 286             }
 287           else                  /* is_ip6 */
 288             {
 289               next0 =
 290                 (iuvn6_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
 291                 nngm->decap_next_node_list[iuvn6_0->vxlan.protocol] :
 292                 VXLAN_GPE_INPUT_NEXT_DROP;
 293               next1 =
 294                 (iuvn6_1->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
 295                 nngm->decap_next_node_list[iuvn6_1->vxlan.protocol] :
 296                 VXLAN_GPE_INPUT_NEXT_DROP;
 297
 298               key6_0.local.as_u64[0] = iuvn6_0->ip6.dst_address.as_u64[0];
 299               key6_0.local.as_u64[1] = iuvn6_0->ip6.dst_address.as_u64[1];
 300               key6_1.local.as_u64[0] = iuvn6_1->ip6.dst_address.as_u64[0];
 301               key6_1.local.as_u64[1] = iuvn6_1->ip6.dst_address.as_u64[1];
 302
 303               key6_0.remote.as_u64[0] = iuvn6_0->ip6.src_address.as_u64[0];
 304               key6_0.remote.as_u64[1] = iuvn6_0->ip6.src_address.as_u64[1];
 305               key6_1.remote.as_u64[0] = iuvn6_1->ip6.src_address.as_u64[0];
 306               key6_1.remote.as_u64[1] = iuvn6_1->ip6.src_address.as_u64[1];
 307
 308               key6_0.vni = iuvn6_0->vxlan.vni_res;
 309               key6_1.vni = iuvn6_1->vxlan.vni_res;
 310
 311               /* Processing for key6_0 */
 312               if (PREDICT_FALSE
 313                   (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
 314                 {
 315                   p0 = hash_get_mem (nngm->vxlan6_gpe_tunnel_by_key, &key6_0);
 316
 317                   if (p0 == 0)
 318                     {
 319                       error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
 320                       goto trace0;
 321                     }
 322
 323                   memcpy (&last_key6, &key6_0, sizeof (key6_0));
 324                   tunnel_index0 = last_tunnel_index = p0[0];
 325                 }
 326               else
 327                 tunnel_index0 = last_tunnel_index;
 328             }
 329
 330           t0 = pool_elt_at_index (nngm->tunnels, tunnel_index0);
 331
 332
 333           sw_if_index0 = t0->sw_if_index;
 334           len0 = vlib_buffer_length_in_chain (vm, b0);
 335
 336           /* Required to make the l2 tag push / pop code work on l2 subifs */
 337           vnet_update_l2_len (b0);
 338
 339           /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
 340           vnet_buffer (b0)->sw_if_index[VLIB_RX] = t0->sw_if_index;
 341
 342       /**
 343        * ip[46] lookup in the configured FIB
 344        */
 345           vnet_buffer (b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index;
 346
 347           pkts_decapsulated++;
 348           stats_n_packets += 1;
 349           stats_n_bytes += len0;
 350
 351           if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
 352             {
 353               stats_n_packets -= 1;
 354               stats_n_bytes -= len0;
 355               if (stats_n_packets)
 356                 vlib_increment_combined_counter (im->combined_sw_if_counters +
 357                                                  VNET_INTERFACE_COUNTER_RX,
 358                                                  thread_index,
 359                                                  stats_sw_if_index,
 360                                                  stats_n_packets,
 361                                                  stats_n_bytes);
 362               stats_n_packets = 1;
 363               stats_n_bytes = len0;
 364               stats_sw_if_index = sw_if_index0;
 365             }
 366
 367         trace0:b0->error = error0 ? node->errors[error0] : 0;
 368
 369           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
 370             {
 371               vxlan_gpe_rx_trace_t *tr =
 372                 vlib_add_trace (vm, node, b0, sizeof (*tr));
 373               tr->next_index = next0;
 374               tr->error = error0;
 375               tr->tunnel_index = tunnel_index0;
 376             }
 377
 378           /* Process packet 1 */
 379           if (is_ip4)
 380             {
 381               /* Processing for key4_1 */
 382               if (PREDICT_FALSE ((key4_1.as_u64[0] != last_key4.as_u64[0])
 383                                  || (key4_1.as_u64[1] !=
 384                                      last_key4.as_u64[1])))
 385                 {
 386                   p1 = hash_get_mem (nngm->vxlan4_gpe_tunnel_by_key, &key4_1);
 387
 388                   if (p1 == 0)
 389                     {
 390                       error1 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
 391                       goto trace1;
 392                     }
 393
 394                   last_key4.as_u64[0] = key4_1.as_u64[0];
 395                   last_key4.as_u64[1] = key4_1.as_u64[1];
 396                   tunnel_index1 = last_tunnel_index = p1[0];
 397                 }
 398               else
 399                 tunnel_index1 = last_tunnel_index;
 400             }
 401           else                  /* is_ip6 */
 402             {
 403               /* Processing for key6_1 */
 404               if (PREDICT_FALSE
 405                   (memcmp (&key6_1, &last_key6, sizeof (last_key6)) != 0))
 406                 {
 407                   p1 = hash_get_mem (nngm->vxlan6_gpe_tunnel_by_key, &key6_1);
 408
 409                   if (p1 == 0)
 410                     {
 411                       error1 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
 412                       goto trace1;
 413                     }
 414
 415                   memcpy (&last_key6, &key6_1, sizeof (key6_1));
 416                   tunnel_index1 = last_tunnel_index = p1[0];
 417                 }
 418               else
 419                 tunnel_index1 = last_tunnel_index;
 420             }
 421
 422           t1 = pool_elt_at_index (nngm->tunnels, tunnel_index1);
 423
 424           sw_if_index1 = t1->sw_if_index;
 425           len1 = vlib_buffer_length_in_chain (vm, b1);
 426
 427           /* Required to make the l2 tag push / pop code work on l2 subifs */
 428           vnet_update_l2_len (b1);
 429
 430           /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
 431           vnet_buffer (b1)->sw_if_index[VLIB_RX] = t1->sw_if_index;
 432
 433           /*
 434            * ip[46] lookup in the configured FIB
 435            */
 436           vnet_buffer (b1)->sw_if_index[VLIB_TX] = t1->decap_fib_index;
 437
 438           pkts_decapsulated++;
 439           stats_n_packets += 1;
 440           stats_n_bytes += len1;
 441
 442           /* Batch stats increment on the same vxlan tunnel so counter
 443              is not incremented per packet */
 444           if (PREDICT_FALSE (sw_if_index1 != stats_sw_if_index))
 445             {
 446               stats_n_packets -= 1;
 447               stats_n_bytes -= len1;
 448               if (stats_n_packets)
 449                 vlib_increment_combined_counter (im->combined_sw_if_counters +
 450                                                  VNET_INTERFACE_COUNTER_RX,
 451                                                  thread_index,
 452                                                  stats_sw_if_index,
 453                                                  stats_n_packets,
 454                                                  stats_n_bytes);
 455               stats_n_packets = 1;
 456               stats_n_bytes = len1;
 457               stats_sw_if_index = sw_if_index1;
 458             }
 459           vnet_buffer (b1)->sw_if_index[VLIB_TX] = t1->decap_fib_index;
 460
 461         trace1:b1->error = error1 ? node->errors[error1] : 0;
 462
 463           if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
 464             {
 465               vxlan_gpe_rx_trace_t *tr =
 466                 vlib_add_trace (vm, node, b1, sizeof (*tr));
 467               tr->next_index = next1;
 468               tr->error = error1;
 469               tr->tunnel_index = tunnel_index1;
 470             }
 471
 472           vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
 473                                            n_left_to_next, bi0, bi1, next0,
 474                                            next1);
 475         }
 476
 477       while (n_left_from > 0 && n_left_to_next > 0)
 478         {
 479           u32 bi0;
 480           vlib_buffer_t *b0;
 481           u32 next0;
 482           ip4_vxlan_gpe_header_t *iuvn4_0;
 483           ip6_vxlan_gpe_header_t *iuvn6_0;
 484           uword *p0;
 485           u32 tunnel_index0;
 486           vxlan_gpe_tunnel_t *t0;
 487           vxlan4_gpe_tunnel_key_t key4_0;
 488           vxlan6_gpe_tunnel_key_t key6_0;
 489           u32 error0;
 490           u32 sw_if_index0, len0;
 491
 492           bi0 = from[0];
 493           to_next[0] = bi0;
 494           from += 1;
 495           to_next += 1;
 496           n_left_from -= 1;
 497           n_left_to_next -= 1;
 498
 499           b0 = vlib_get_buffer (vm, bi0);
 500
 501           if (is_ip4)
 502             {
 503               /* udp leaves current_data pointing at the vxlan-gpe header */
 504               vlib_buffer_advance (b0,
 505                                    -(word) (sizeof (udp_header_t) +
 506                                             sizeof (ip4_header_t)));
 507
 508               iuvn4_0 = vlib_buffer_get_current (b0);
 509
 510               /* pop (ip, udp, vxlan) */
 511               vlib_buffer_advance (b0, sizeof (*iuvn4_0));
 512             }
 513           else
 514             {
 515               /* udp leaves current_data pointing at the vxlan-gpe header */
 516               vlib_buffer_advance (b0,
 517                                    -(word) (sizeof (udp_header_t) +
 518                                             sizeof (ip6_header_t)));
 519
 520               iuvn6_0 = vlib_buffer_get_current (b0);
 521
 522               /* pop (ip, udp, vxlan) */
 523               vlib_buffer_advance (b0, sizeof (*iuvn6_0));
 524             }
 525
 526           tunnel_index0 = ~0;
 527           error0 = 0;
 528
 529           if (is_ip4)
 530             {
 531               next0 =
 532                 (iuvn4_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
 533                 nngm->decap_next_node_list[iuvn4_0->vxlan.protocol] :
 534                 VXLAN_GPE_INPUT_NEXT_DROP;
 535
 536               key4_0.local = iuvn4_0->ip4.dst_address.as_u32;
 537               key4_0.remote = iuvn4_0->ip4.src_address.as_u32;
 538               key4_0.vni = iuvn4_0->vxlan.vni_res;
 539               key4_0.pad = 0;
 540
 541               /* Processing for key4_0 */
 542               if (PREDICT_FALSE ((key4_0.as_u64[0] != last_key4.as_u64[0])
 543                                  || (key4_0.as_u64[1] !=
 544                                      last_key4.as_u64[1])))
 545                 {
 546                   p0 = hash_get_mem (nngm->vxlan4_gpe_tunnel_by_key, &key4_0);
 547
 548                   if (p0 == 0)
 549                     {
 550                       error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
 551                       goto trace00;
 552                     }
 553
 554                   last_key4.as_u64[0] = key4_0.as_u64[0];
 555                   last_key4.as_u64[1] = key4_0.as_u64[1];
 556                   tunnel_index0 = last_tunnel_index = p0[0];
 557                 }
 558               else
 559                 tunnel_index0 = last_tunnel_index;
 560             }
 561           else                  /* is_ip6 */
 562             {
 563               next0 =
 564                 (iuvn6_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
 565                 nngm->decap_next_node_list[iuvn6_0->vxlan.protocol] :
 566                 VXLAN_GPE_INPUT_NEXT_DROP;
 567
 568               key6_0.local.as_u64[0] = iuvn6_0->ip6.dst_address.as_u64[0];
 569               key6_0.local.as_u64[1] = iuvn6_0->ip6.dst_address.as_u64[1];
 570               key6_0.remote.as_u64[0] = iuvn6_0->ip6.src_address.as_u64[0];
 571               key6_0.remote.as_u64[1] = iuvn6_0->ip6.src_address.as_u64[1];
 572               key6_0.vni = iuvn6_0->vxlan.vni_res;
 573
 574               /* Processing for key6_0 */
 575               if (PREDICT_FALSE
 576                   (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
 577                 {
 578                   p0 = hash_get_mem (nngm->vxlan6_gpe_tunnel_by_key, &key6_0);
 579
 580                   if (p0 == 0)
 581                     {
 582                       error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
 583                       goto trace00;
 584                     }
 585
 586                   memcpy (&last_key6, &key6_0, sizeof (key6_0));
 587                   tunnel_index0 = last_tunnel_index = p0[0];
 588                 }
 589               else
 590                 tunnel_index0 = last_tunnel_index;
 591             }
 592
 593           t0 = pool_elt_at_index (nngm->tunnels, tunnel_index0);
 594
 595
 596           sw_if_index0 = t0->sw_if_index;
 597           len0 = vlib_buffer_length_in_chain (vm, b0);
 598
 599           /* Required to make the l2 tag push / pop code work on l2 subifs */
 600           vnet_update_l2_len (b0);
 601
 602           /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
 603           vnet_buffer (b0)->sw_if_index[VLIB_RX] = t0->sw_if_index;
 604
 605           /*
 606            * ip[46] lookup in the configured FIB
 607            */
 608           vnet_buffer (b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index;
 609
 610           pkts_decapsulated++;
 611           stats_n_packets += 1;
 612           stats_n_bytes += len0;
 613
 614           /* Batch stats increment on the same vxlan-gpe tunnel so counter
 615              is not incremented per packet */
 616           if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
 617             {
 618               stats_n_packets -= 1;
 619               stats_n_bytes -= len0;
 620               if (stats_n_packets)
 621                 vlib_increment_combined_counter (im->combined_sw_if_counters +
 622                                                  VNET_INTERFACE_COUNTER_RX,
 623                                                  thread_index,
 624                                                  stats_sw_if_index,
 625                                                  stats_n_packets,
 626                                                  stats_n_bytes);
 627               stats_n_packets = 1;
 628               stats_n_bytes = len0;
 629               stats_sw_if_index = sw_if_index0;
 630             }
 631
 632         trace00:b0->error = error0 ? node->errors[error0] : 0;
 633
 634           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
 635             {
 636               vxlan_gpe_rx_trace_t *tr =
 637                 vlib_add_trace (vm, node, b0, sizeof (*tr));
 638               tr->next_index = next0;
 639               tr->error = error0;
 640               tr->tunnel_index = tunnel_index0;
 641             }
 642           vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
 643                                            n_left_to_next, bi0, next0);
 644         }
 645
 646       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
 647     }
 648
 649   vlib_node_increment_counter (vm,
 650                                is_ip4 ? vxlan4_gpe_input_node.index :
 651                                vxlan6_gpe_input_node.index,
 652                                VXLAN_GPE_ERROR_DECAPSULATED,
 653                                pkts_decapsulated);
 654
 655   /* Increment any remaining batch stats */
 656   if (stats_n_packets)
 657     {
 658       vlib_increment_combined_counter (im->combined_sw_if_counters +
 659                                        VNET_INTERFACE_COUNTER_RX,
 660                                        thread_index, stats_sw_if_index,
 661                                        stats_n_packets, stats_n_bytes);
 662       node->runtime_data[0] = stats_sw_if_index;
 663     }
 664   return from_frame->n_vectors;
 665 }
 666
 667 /**
 668  * @brief Graph processing dispatch function for IPv4 VXLAN GPE
 669  *
 670  * @node vxlan4-gpe-input
 671  * @param *vm
 672  * @param *node
 673  * @param *from_frame
 674  *
 675  * @return from_frame->n_vectors
 676  *
 677  */
 678 VLIB_NODE_FN (vxlan4_gpe_input_node) (vlib_main_t * vm,
 679                                       vlib_node_runtime_t * node,
 680                                       vlib_frame_t * from_frame)
 681 {
 682   return vxlan_gpe_input (vm, node, from_frame, /* is_ip4 */ 1);
 683 }
 684
 685 #ifndef CLIB_MARCH_VARIANT
 686 void
 687 vxlan_gpe_register_decap_protocol (u8 protocol_id, uword next_node_index)
 688 {
 689   vxlan_gpe_main_t *hm = &vxlan_gpe_main;
 690   hm->decap_next_node_list[protocol_id] = next_node_index;
 691   return;
 692 }
 693
 694 void
 695 vxlan_gpe_unregister_decap_protocol (u8 protocol_id, uword next_node_index)
 696 {
 697   vxlan_gpe_main_t *hm = &vxlan_gpe_main;
 698   hm->decap_next_node_list[protocol_id] = VXLAN_GPE_INPUT_NEXT_DROP;
 699   return;
 700 }
 701 #endif /* CLIB_MARCH_VARIANT */
 702
 703 /**
 704  * @brief Graph processing dispatch function for IPv6 VXLAN GPE
 705  *
 706  * @node vxlan6-gpe-input
 707  * @param *vm
 708  * @param *node
 709  * @param *from_frame
 710  *
 711  * @return from_frame->n_vectors - uword
 712  *
 713  */
 714 VLIB_NODE_FN (vxlan6_gpe_input_node) (vlib_main_t * vm,
 715                                       vlib_node_runtime_t * node,
 716                                       vlib_frame_t * from_frame)
 717 {
 718   return vxlan_gpe_input (vm, node, from_frame, /* is_ip4 */ 0);
 719 }
 720
 721 /**
 722  * @brief VXLAN GPE error strings
 723  */
 724 static char *vxlan_gpe_error_strings[] = {
 725 #define vxlan_gpe_error(n,s) s,
 726 #include <vnet/vxlan-gpe/vxlan_gpe_error.def>
 727 #undef vxlan_gpe_error
 728 #undef _
 729 };
 730
 731 /* *INDENT-OFF* */
 732 VLIB_REGISTER_NODE (vxlan4_gpe_input_node) = {
 733   .name = "vxlan4-gpe-input",
 734   /* Takes a vector of packets. */
 735   .vector_size = sizeof (u32),
 736   .type = VLIB_NODE_TYPE_INTERNAL,
 737   .n_errors = ARRAY_LEN(vxlan_gpe_error_strings),
 738   .error_strings = vxlan_gpe_error_strings,
 739
 740   .n_next_nodes = VXLAN_GPE_INPUT_N_NEXT,
 741   .next_nodes = {
 742 #define _(s,n) [VXLAN_GPE_INPUT_NEXT_##s] = n,
 743     foreach_vxlan_gpe_input_next
 744 #undef _
 745   },
 746
 747   .format_buffer = format_vxlan_gpe_with_length,
 748   .format_trace = format_vxlan_gpe_rx_trace,
 749   // $$$$ .unformat_buffer = unformat_vxlan_gpe_header,
 750 };
 751 /* *INDENT-ON* */
 752
 753 /* *INDENT-OFF* */
 754 VLIB_REGISTER_NODE (vxlan6_gpe_input_node) = {
 755   .name = "vxlan6-gpe-input",
 756   /* Takes a vector of packets. */
 757   .vector_size = sizeof (u32),
 758   .type = VLIB_NODE_TYPE_INTERNAL,
 759   .n_errors = ARRAY_LEN(vxlan_gpe_error_strings),
 760   .error_strings = vxlan_gpe_error_strings,
 761
 762   .n_next_nodes = VXLAN_GPE_INPUT_N_NEXT,
 763   .next_nodes = {
 764 #define _(s,n) [VXLAN_GPE_INPUT_NEXT_##s] = n,
 765     foreach_vxlan_gpe_input_next
 766 #undef _
 767   },
 768
 769   .format_buffer = format_vxlan_gpe_with_length,
 770   .format_trace = format_vxlan_gpe_rx_trace,
 771   // $$$$ .unformat_buffer = unformat_vxlan_gpe_header,
 772 };
 773 /* *INDENT-ON* */
 774
 775 typedef enum
 776 {
 777   IP_VXLAN_BYPASS_NEXT_DROP,
 778   IP_VXLAN_BYPASS_NEXT_VXLAN,
 779   IP_VXLAN_BYPASS_N_NEXT,
 780 } ip_vxlan_bypass_next_t;
 781
 782 always_inline uword
 783 ip_vxlan_gpe_bypass_inline (vlib_main_t * vm,
 784                             vlib_node_runtime_t * node,
 785                             vlib_frame_t * frame, u32 is_ip4)
 786 {
 787   vxlan_gpe_main_t *ngm = &vxlan_gpe_main;
 788   u32 *from, *to_next, n_left_from, n_left_to_next, next_index;
 789   vlib_node_runtime_t *error_node =
 790     vlib_node_get_runtime (vm, ip4_input_node.index);
 791   vtep4_key_t last_vtep4;       /* last IPv4 address / fib index
 792                                    matching a local VTEP address */
 793   vtep6_key_t last_vtep6;       /* last IPv6 address / fib index
 794                                    matching a local VTEP address */
 795   vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
 796 #ifdef CLIB_HAVE_VEC512
 797   vtep4_cache_t vtep4_u512;
 798   clib_memset (&vtep4_u512, 0, sizeof (vtep4_u512));
 799 #endif
 800
 801   from = vlib_frame_vector_args (frame);
 802   n_left_from = frame->n_vectors;
 803   next_index = node->cached_next_index;
 804
 805   vlib_get_buffers (vm, from, bufs, n_left_from);
 806
 807   if (node->flags & VLIB_NODE_FLAG_TRACE)
 808     ip4_forward_next_trace (vm, node, frame, VLIB_TX);
 809
 810   if (is_ip4)
 811     vtep4_key_init (&last_vtep4);
 812   else
 813     vtep6_key_init (&last_vtep6);
 814
 815   while (n_left_from > 0)
 816     {
 817       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
 818
 819       while (n_left_from >= 4 && n_left_to_next >= 2)
 820         {
 821           vlib_buffer_t *b0, *b1;
 822           ip4_header_t *ip40, *ip41;
 823           ip6_header_t *ip60, *ip61;
 824           udp_header_t *udp0, *udp1;
 825           u32 bi0, ip_len0, udp_len0, flags0, next0;
 826           u32 bi1, ip_len1, udp_len1, flags1, next1;
 827           i32 len_diff0, len_diff1;
 828           u8 error0, good_udp0, proto0;
 829           u8 error1, good_udp1, proto1;
 830
 831           /* Prefetch next iteration. */
 832           {
 833             vlib_prefetch_buffer_header (b[2], LOAD);
 834             vlib_prefetch_buffer_header (b[3], LOAD);
 835
 836             CLIB_PREFETCH (b[2]->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
 837             CLIB_PREFETCH (b[3]->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
 838           }
 839
 840           bi0 = to_next[0] = from[0];
 841           bi1 = to_next[1] = from[1];
 842           from += 2;
 843           n_left_from -= 2;
 844           to_next += 2;
 845           n_left_to_next -= 2;
 846
 847           b0 = b[0];
 848           b1 = b[1];
 849           b += 2;
 850           if (is_ip4)
 851             {
 852               ip40 = vlib_buffer_get_current (b0);
 853               ip41 = vlib_buffer_get_current (b1);
 854             }
 855           else
 856             {
 857               ip60 = vlib_buffer_get_current (b0);
 858               ip61 = vlib_buffer_get_current (b1);
 859             }
 860
 861           /* Setup packet for next IP feature */
 862           vnet_feature_next (&next0, b0);
 863           vnet_feature_next (&next1, b1);
 864
 865           if (is_ip4)
 866             {
 867               proto0 = ip40->protocol;
 868               proto1 = ip41->protocol;
 869             }
 870           else
 871             {
 872               proto0 = ip60->protocol;
 873               proto1 = ip61->protocol;
 874             }
 875
 876           /* Process packet 0 */
 877           if (proto0 != IP_PROTOCOL_UDP)
 878             goto exit0;         /* not UDP packet */
 879
 880           if (is_ip4)
 881             udp0 = ip4_next_header (ip40);
 882           else
 883             udp0 = ip6_next_header (ip60);
 884
 885           if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_VXLAN_GPE))
 886             goto exit0;         /* not VXLAN packet */
 887
 888           /* Validate DIP against VTEPs */
 889           if (is_ip4)
 890             {
 891 #ifdef CLIB_HAVE_VEC512
 892               if (!vtep4_check_vector
 893                   (&ngm->vtep_table, b0, ip40, &last_vtep4, &vtep4_u512))
 894 #else
 895               if (!vtep4_check (&ngm->vtep_table, b0, ip40, &last_vtep4))
 896 #endif
 897                 goto exit0;     /* no local VTEP for VXLAN packet */
 898             }
 899           else
 900             {
 901               if (!vtep6_check (&ngm->vtep_table, b0, ip60, &last_vtep6))
 902                 goto exit0;     /* no local VTEP for VXLAN packet */
 903             }
 904
 905           flags0 = b0->flags;
 906           good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
 907
 908           /* Don't verify UDP checksum for packets with explicit zero checksum. */
 909           good_udp0 |= udp0->checksum == 0;
 910
 911           /* Verify UDP length */
 912           if (is_ip4)
 913             ip_len0 = clib_net_to_host_u16 (ip40->length);
 914           else
 915             ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
 916           udp_len0 = clib_net_to_host_u16 (udp0->length);
 917           len_diff0 = ip_len0 - udp_len0;
 918
 919           /* Verify UDP checksum */
 920           if (PREDICT_FALSE (!good_udp0))
 921             {
 922               if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
 923                 {
 924                   if (is_ip4)
 925                     flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
 926                   else
 927                     flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
 928                   good_udp0 =
 929                     (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
 930                 }
 931             }
 932
 933           if (is_ip4)
 934             {
 935               error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
 936               error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
 937             }
 938           else
 939             {
 940               error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
 941               error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
 942             }
 943
 944           next0 = error0 ?
 945             IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN;
 946           b0->error = error0 ? error_node->errors[error0] : 0;
 947
 948           /* vxlan_gpe-input node expect current at VXLAN header */
 949           if (is_ip4)
 950             vlib_buffer_advance (b0,
 951                                  sizeof (ip4_header_t) +
 952                                  sizeof (udp_header_t));
 953           else
 954             vlib_buffer_advance (b0,
 955                                  sizeof (ip6_header_t) +
 956                                  sizeof (udp_header_t));
 957
 958         exit0:
 959           /* Process packet 1 */
 960           if (proto1 != IP_PROTOCOL_UDP)
 961             goto exit1;         /* not UDP packet */
 962
 963           if (is_ip4)
 964             udp1 = ip4_next_header (ip41);
 965           else
 966             udp1 = ip6_next_header (ip61);
 967
 968           if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_VXLAN_GPE))
 969             goto exit1;         /* not VXLAN packet */
 970
 971           /* Validate DIP against VTEPs */
 972           if (is_ip4)
 973             {
 974 #ifdef CLIB_HAVE_VEC512
 975               if (!vtep4_check_vector
 976                   (&ngm->vtep_table, b1, ip41, &last_vtep4, &vtep4_u512))
 977 #else
 978               if (!vtep4_check (&ngm->vtep_table, b1, ip41, &last_vtep4))
 979 #endif
 980                 goto exit1;     /* no local VTEP for VXLAN packet */
 981             }
 982           else
 983             {
 984               if (!vtep6_check (&ngm->vtep_table, b1, ip61, &last_vtep6))
 985                 goto exit1;     /* no local VTEP for VXLAN packet */
 986             }
 987
 988           flags1 = b1->flags;
 989           good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
 990
 991           /* Don't verify UDP checksum for packets with explicit zero checksum. */
 992           good_udp1 |= udp1->checksum == 0;
 993
 994           /* Verify UDP length */
 995           if (is_ip4)
 996             ip_len1 = clib_net_to_host_u16 (ip41->length);
 997           else
 998             ip_len1 = clib_net_to_host_u16 (ip61->payload_length);
 999           udp_len1 = clib_net_to_host_u16 (udp1->length);
1000           len_diff1 = ip_len1 - udp_len1;
1001
1002           /* Verify UDP checksum */
1003           if (PREDICT_FALSE (!good_udp1))
1004             {
1005               if ((flags1 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1006                 {
1007                   if (is_ip4)
1008                     flags1 = ip4_tcp_udp_validate_checksum (vm, b1);
1009                   else
1010                     flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, b1);
1011                   good_udp1 =
1012                     (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1013                 }
1014             }
1015
1016           if (is_ip4)
1017             {
1018               error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1019               error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH;
1020             }
1021           else
1022             {
1023               error1 = good_udp1 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1024               error1 = (len_diff1 >= 0) ? error1 : IP6_ERROR_UDP_LENGTH;
1025             }
1026
1027           next1 = error1 ?
1028             IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN;
1029           b1->error = error1 ? error_node->errors[error1] : 0;
1030
1031           /* vxlan_gpe-input node expect current at VXLAN header */
1032           if (is_ip4)
1033             vlib_buffer_advance (b1,
1034                                  sizeof (ip4_header_t) +
1035                                  sizeof (udp_header_t));
1036           else
1037             vlib_buffer_advance (b1,
1038                                  sizeof (ip6_header_t) +
1039                                  sizeof (udp_header_t));
1040
1041         exit1:
1042           vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
1043                                            to_next, n_left_to_next,
1044                                            bi0, bi1, next0, next1);
1045         }
1046
1047       while (n_left_from > 0 && n_left_to_next > 0)
1048         {
1049           vlib_buffer_t *b0;
1050           ip4_header_t *ip40;
1051           ip6_header_t *ip60;
1052           udp_header_t *udp0;
1053           u32 bi0, ip_len0, udp_len0, flags0, next0;
1054           i32 len_diff0;
1055           u8 error0, good_udp0, proto0;
1056
1057           bi0 = to_next[0] = from[0];
1058           from += 1;
1059           n_left_from -= 1;
1060           to_next += 1;
1061           n_left_to_next -= 1;
1062
1063           b0 = b[0];
1064           b++;
1065           if (is_ip4)
1066             ip40 = vlib_buffer_get_current (b0);
1067           else
1068             ip60 = vlib_buffer_get_current (b0);
1069
1070           /* Setup packet for next IP feature */
1071           vnet_feature_next (&next0, b0);
1072
1073           if (is_ip4)
1074             proto0 = ip40->protocol;
1075           else
1076             proto0 = ip60->protocol;
1077
1078           if (proto0 != IP_PROTOCOL_UDP)
1079             goto exit;          /* not UDP packet */
1080
1081           if (is_ip4)
1082             udp0 = ip4_next_header (ip40);
1083           else
1084             udp0 = ip6_next_header (ip60);
1085
1086           if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_VXLAN_GPE))
1087             goto exit;          /* not VXLAN packet */
1088
1089           /* Validate DIP against VTEPs */
1090
1091           if (is_ip4)
1092             {
1093 #ifdef CLIB_HAVE_VEC512
1094               if (!vtep4_check_vector
1095                   (&ngm->vtep_table, b0, ip40, &last_vtep4, &vtep4_u512))
1096 #else
1097               if (!vtep4_check (&ngm->vtep_table, b0, ip40, &last_vtep4))
1098 #endif
1099                 goto exit;      /* no local VTEP for VXLAN packet */
1100             }
1101           else
1102             {
1103               if (!vtep6_check (&ngm->vtep_table, b0, ip60, &last_vtep6))
1104                 goto exit;      /* no local VTEP for VXLAN packet */
1105             }
1106
1107           flags0 = b0->flags;
1108           good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1109
1110           /* Don't verify UDP checksum for packets with explicit zero checksum. */
1111           good_udp0 |= udp0->checksum == 0;
1112
1113           /* Verify UDP length */
1114           if (is_ip4)
1115             ip_len0 = clib_net_to_host_u16 (ip40->length);
1116           else
1117             ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
1118           udp_len0 = clib_net_to_host_u16 (udp0->length);
1119           len_diff0 = ip_len0 - udp_len0;
1120
1121           /* Verify UDP checksum */
1122           if (PREDICT_FALSE (!good_udp0))
1123             {
1124               if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1125                 {
1126                   if (is_ip4)
1127                     flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
1128                   else
1129                     flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
1130                   good_udp0 =
1131                     (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1132                 }
1133             }
1134
1135           if (is_ip4)
1136             {
1137               error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1138               error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
1139             }
1140           else
1141             {
1142               error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1143               error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
1144             }
1145
1146           next0 = error0 ?
1147             IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN;
1148           b0->error = error0 ? error_node->errors[error0] : 0;
1149
1150           /* vxlan_gpe-input node expect current at VXLAN header */
1151           if (is_ip4)
1152             vlib_buffer_advance (b0,
1153                                  sizeof (ip4_header_t) +
1154                                  sizeof (udp_header_t));
1155           else
1156             vlib_buffer_advance (b0,
1157                                  sizeof (ip6_header_t) +
1158                                  sizeof (udp_header_t));
1159
1160         exit:
1161           vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1162                                            to_next, n_left_to_next,
1163                                            bi0, next0);
1164         }
1165
1166       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1167     }
1168
1169   return frame->n_vectors;
1170 }
1171
1172 VLIB_NODE_FN (ip4_vxlan_gpe_bypass_node) (vlib_main_t * vm,
1173                                           vlib_node_runtime_t * node,
1174                                           vlib_frame_t * frame)
1175 {
1176   return ip_vxlan_gpe_bypass_inline (vm, node, frame, /* is_ip4 */ 1);
1177 }
1178
1179 /* *INDENT-OFF* */
1180 VLIB_REGISTER_NODE (ip4_vxlan_gpe_bypass_node) = {
1181   .name = "ip4-vxlan-gpe-bypass",
1182   .vector_size = sizeof (u32),
1183
1184   .n_next_nodes = IP_VXLAN_BYPASS_N_NEXT,
1185   .next_nodes = {
1186     [IP_VXLAN_BYPASS_NEXT_DROP] = "error-drop",
1187     [IP_VXLAN_BYPASS_NEXT_VXLAN] = "vxlan4-gpe-input",
1188   },
1189
1190   .format_buffer = format_ip4_header,
1191   .format_trace = format_ip4_forward_next_trace,
1192 };
1193 /* *INDENT-ON* */
1194
1195 #ifndef CLIB_MARCH_VARIANT
1196 /* Dummy init function to get us linked in. */
1197 clib_error_t *
1198 ip4_vxlan_gpe_bypass_init (vlib_main_t * vm)
1199 {
1200   return 0;
1201 }
1202
1203 VLIB_INIT_FUNCTION (ip4_vxlan_gpe_bypass_init);
1204 #endif /* CLIB_MARCH_VARIANT */
1205
1206 VLIB_NODE_FN (ip6_vxlan_gpe_bypass_node) (vlib_main_t * vm,
1207                                           vlib_node_runtime_t * node,
1208                                           vlib_frame_t * frame)
1209 {
1210   return ip_vxlan_gpe_bypass_inline (vm, node, frame, /* is_ip4 */ 0);
1211 }
1212
1213 /* *INDENT-OFF* */
1214 VLIB_REGISTER_NODE (ip6_vxlan_gpe_bypass_node) = {
1215   .name = "ip6-vxlan-gpe-bypass",
1216   .vector_size = sizeof (u32),
1217
1218   .n_next_nodes = IP_VXLAN_BYPASS_N_NEXT,
1219   .next_nodes = {
1220     [IP_VXLAN_BYPASS_NEXT_DROP] = "error-drop",
1221     [IP_VXLAN_BYPASS_NEXT_VXLAN] = "vxlan6-gpe-input",
1222   },
1223
1224   .format_buffer = format_ip6_header,
1225   .format_trace = format_ip6_forward_next_trace,
1226 };
1227 /* *INDENT-ON* */
1228
1229 #ifndef CLIB_MARCH_VARIANT
1230 /* Dummy init function to get us linked in. */
1231 clib_error_t *
1232 ip6_vxlan_gpe_bypass_init (vlib_main_t * vm)
1233 {
1234   return 0;
1235 }
1236
1237 VLIB_INIT_FUNCTION (ip6_vxlan_gpe_bypass_init);
1238 #endif /* CLIB_MARCH_VARIANT */
1239
1240 /*
1241  * fd.io coding-style-patch-verification: ON
1242  *
1243  * Local Variables:
1244  * eval: (c-set-style "gnu")
1245  * End:
1246  */