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