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authorDamjan Marion <damarion@cisco.com>2022-05-20 16:01:22 +0200
committerOle Tr�an <otroan@employees.org>2022-09-26 08:14:29 +0000
commitfe45f8f5afbf34d68cf992cc32b12432a82cdb38 (patch)
treeae8126e78d184022ef97007e64ac1f3350537a40 /src/plugins/l2tp
parentb70497124840fb6d9e8e5cf7239a41cb2bc7013c (diff)
api: replace print functions wth format
Type: improvement Change-Id: I7f7050c19453a69a7fb6c5e62f8f57db847d9144 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/plugins/l2tp')
-rw-r--r--src/plugins/l2tp/l2tp_test.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/src/plugins/l2tp/l2tp_test.c b/src/plugins/l2tp/l2tp_test.c
index fef6121943b..33691313cbe 100644
--- a/src/plugins/l2tp/l2tp_test.c
+++ b/src/plugins/l2tp/l2tp_test.c
@@ -41,13 +41,11 @@ l2tp_test_main_t l2tp_test_main;
#define __plugin_msg_base l2tp_test_main.msg_id_base
#include <vlibapi/vat_helper_macros.h>
-/* Macro to finish up custom dump fns */
-#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
-#define FINISH \
- vec_add1 (s, 0); \
- vl_print (handle, (char *)s); \
- vec_free (s); \
- return handle;
+#define FINISH \
+ vec_add1 (s, 0); \
+ vlib_cli_output (handle, (char *) s); \
+ vec_free (s); \
+ return handle;
static void vl_api_l2tpv3_create_tunnel_reply_t_handler
(vl_api_l2tpv3_create_tunnel_reply_t * mp)
'>190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 
/*
 * Copyright (c) 2016 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef __included_ioam_export_h__
#define __included_ioam_export_h__

#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
#include <vnet/ip/ip_packet.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/ip/ip6_hop_by_hop.h>
#include <vnet/udp/udp.h>
#include <vnet/ipfix-export/ipfix_packet.h>

#include <vppinfra/pool.h>
#include <vppinfra/hash.h>
#include <vppinfra/error.h>
#include <vppinfra/elog.h>

#include <vlib/threads.h>

typedef struct ioam_export_buffer
{
  /** Required for pool_get_aligned */
  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
  /* Allocated buffer */
  u32 buffer_index;
  u64 touched_at;
  u8 records_in_this_buffer;
} ioam_export_buffer_t;


typedef struct
{
  /* API message ID base */
  u16 msg_id_base;
  u16 set_id;

  /* TODO: to support multiple collectors all this has to be grouped and create a vector here */
  u8 *record_header;
  u32 sequence_number;
  u32 domain_id;

  /* ipfix collector, our ip address */
  ip4_address_t ipfix_collector;
  ip4_address_t src_address;

  /* Pool of ioam_export_buffer_t */
  ioam_export_buffer_t *buffer_pool;
  /* Vector of per thread ioam_export_buffer_t to buffer pool index */
  u32 *buffer_per_thread;
  /* Lock per thread to swap buffers between worker and timer process */
  volatile u32 **lockp;

  /* time scale transform */
  u32 unix_time_0;
  f64 vlib_time_0;

  /* convenience */
  vlib_main_t *vlib_main;
  vnet_main_t *vnet_main;
  ethernet_main_t *ethernet_main;
  u32 next_node_index;

  uword my_hbh_slot;
  u32 export_process_node_index;
} ioam_export_main_t;


#define DEFAULT_EXPORT_SIZE (3 * CLIB_CACHE_LINE_BYTES)
/*
 *  Number of records in a buffer
 * ~(MTU (1500) - [ip hdr(40) + UDP(8) + ipfix (24)]) / DEFAULT_EXPORT_SIZE
 */
#define DEFAULT_EXPORT_RECORDS 7

inline static void
ioam_export_set_next_node (ioam_export_main_t * em, u8 * next_node_name)
{
  vlib_node_t *next_node;

  next_node = vlib_get_node_by_name (em->vlib_main, next_node_name);
  em->next_node_index = next_node->index;
}

inline static void
ioam_export_reset_next_node (ioam_export_main_t * em)
{
  vlib_node_t *next_node;

  next_node = vlib_get_node_by_name (em->vlib_main, (u8 *) "ip4-lookup");
  em->next_node_index = next_node->index;
}

always_inline ioam_export_buffer_t *
ioam_export_get_my_buffer (ioam_export_main_t * em, u32 thread_id)
{

  if (vec_len (em->buffer_per_thread) > thread_id)
    return (pool_elt_at_index
	    (em->buffer_pool, em->buffer_per_thread[thread_id]));
  return (0);
}

inline static int
ioam_export_buffer_add_header (ioam_export_main_t * em, vlib_buffer_t * b0)
{
  clib_memcpy_fast (b0->data, em->record_header, vec_len (em->record_header));
  b0->current_data = 0;
  b0->current_length = vec_len (em->record_header);
  b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
  return (1);
}

inline static int
ioam_export_init_buffer (ioam_export_main_t * em, vlib_main_t * vm,
			 ioam_export_buffer_t * eb)
{
  vlib_buffer_t *b = 0;

  if (!eb)
    return (-1);
  /* TODO: Perhaps buffer init from template here */
  if (vlib_buffer_alloc (vm, &(eb->buffer_index), 1) != 1)
    return (-2);
  eb->records_in_this_buffer = 0;
  eb->touched_at = vlib_time_now (vm);
  b = vlib_get_buffer (vm, eb->buffer_index);
  (void) ioam_export_buffer_add_header (em, b);
  vnet_buffer (b)->sw_if_index[VLIB_RX] = 0;
  vnet_buffer (b)->sw_if_index[VLIB_TX] = ~0;
  return (1);
}

inline static void
ioam_export_thread_buffer_free (ioam_export_main_t * em)
{
  vlib_main_t *vm = em->vlib_main;
  ioam_export_buffer_t *eb = 0;
  int i;
  for (i = 0; i < vec_len (em->buffer_per_thread); i++)
    {
      eb = pool_elt_at_index (em->buffer_pool, em->buffer_per_thread[i]);
      if (eb)
	vlib_buffer_free (vm, &(eb->buffer_index), 1);
    }
  for (i = 0; i < vec_len (em->lockp); i++)
    clib_mem_free ((void *) em->lockp[i]);
  vec_free (em->buffer_per_thread);
  pool_free (em->buffer_pool);
  vec_free (em->lockp);
  em->buffer_per_thread = 0;
  em->buffer_pool = 0;
  em->lockp = 0;
}

inline static int
ioam_export_thread_buffer_init (ioam_export_main_t * em, vlib_main_t * vm)
{
  int no_of_threads = vec_len (vlib_worker_threads);
  int i;
  ioam_export_buffer_t *eb = 0;

  pool_alloc_aligned (em->buffer_pool,
		      no_of_threads - 1, CLIB_CACHE_LINE_BYTES);
  vec_validate_aligned (em->buffer_per_thread,
			no_of_threads - 1, CLIB_CACHE_LINE_BYTES);
  vec_validate_aligned (em->lockp, no_of_threads - 1, CLIB_CACHE_LINE_BYTES);

  if (!em->buffer_per_thread || !em->buffer_pool || !em->lockp)
    {
      return (-1);
    }
  for (i = 0; i < no_of_threads; i++)
    {
      eb = 0;
      pool_get_aligned (em->buffer_pool, eb, CLIB_CACHE_LINE_BYTES);
      clib_memset (eb, 0, sizeof (*eb));
      em->buffer_per_thread[i] = eb - em->buffer_pool;
      if (ioam_export_init_buffer (em, vm, eb) != 1)
	{
	  ioam_export_thread_buffer_free (em);
	  return (-2);
	}
      em->lockp[i] = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
					     CLIB_CACHE_LINE_BYTES);
      clib_memset ((void *) em->lockp[i], 0, CLIB_CACHE_LINE_BYTES);
    }
  return (1);
}

#define IPFIX_IOAM_EXPORT_ID 272
#define IPFIX_VXLAN_IOAM_EXPORT_ID 273

/* Used to build the rewrite */
/* data set packet */
typedef struct
{
  ipfix_message_header_t h;
  ipfix_set_header_t s;
} ipfix_data_packet_t;

typedef struct
{
  ip4_header_t ip4;
  udp_header_t udp;
  ipfix_data_packet_t ipfix;
} ip4_ipfix_data_packet_t;


inline static void
ioam_export_header_cleanup (ioam_export_main_t * em,
			    ip4_address_t * collector_address,
			    ip4_address_t * src_address)
{
  vec_free (em->record_header);
  em->record_header = 0;
}

inline static int
ioam_export_header_create (ioam_export_main_t * em,
			   ip4_address_t * collector_address,
			   ip4_address_t * src_address)
{
  ip4_header_t *ip;
  udp_header_t *udp;
  ipfix_message_header_t *h;
  ipfix_set_header_t *s;
  u8 *rewrite = 0;
  ip4_ipfix_data_packet_t *tp;


  /* allocate rewrite space */
  vec_validate_aligned (rewrite,
			sizeof (ip4_ipfix_data_packet_t) - 1,
			CLIB_CACHE_LINE_BYTES);

  tp = (ip4_ipfix_data_packet_t *) rewrite;
  ip = (ip4_header_t *) & tp->ip4;
  udp = (udp_header_t *) (ip + 1);
  h = (ipfix_message_header_t *) (udp + 1);
  s = (ipfix_set_header_t *) (h + 1);

  ip->ip_version_and_header_length = 0x45;
  ip->ttl = 254;
  ip->protocol = IP_PROTOCOL_UDP;
  ip->src_address.as_u32 = src_address->as_u32;
  ip->dst_address.as_u32 = collector_address->as_u32;
  udp->src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix);
  udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix);
  /* FIXUP: UDP length */
  udp->length = clib_host_to_net_u16 (vec_len (rewrite) +
				      (DEFAULT_EXPORT_RECORDS *
				       DEFAULT_EXPORT_SIZE) - sizeof (*ip));

  /* FIXUP: message header export_time */
  /* FIXUP: message header sequence_number */
  h->domain_id = clib_host_to_net_u32 (em->domain_id);

  /*FIXUP: Setid length in octets if records exported are not default */
  s->set_id_length = ipfix_set_id_length (em->set_id,
					  (sizeof (*s) +
					   (DEFAULT_EXPORT_RECORDS *
					    DEFAULT_EXPORT_SIZE)));

  /* FIXUP: h version and length length in octets if records exported are not default */
  h->version_length = version_length (sizeof (*h) +
				      (sizeof (*s) +
				       (DEFAULT_EXPORT_RECORDS *
					DEFAULT_EXPORT_SIZE)));

  /* FIXUP: ip length if records exported are not default */
  /* FIXUP: ip checksum if records exported are not default */
  ip->length = clib_host_to_net_u16 (vec_len (rewrite) +
				     (DEFAULT_EXPORT_RECORDS *
				      DEFAULT_EXPORT_SIZE));
  ip->checksum = ip4_header_checksum (ip);
  _vec_len (rewrite) = sizeof (ip4_ipfix_data_packet_t);
  em->record_header = rewrite;
  return (1);
}

inline static int
ioam_export_send_buffer (ioam_export_main_t * em, vlib_main_t * vm,
			 ioam_export_buffer_t * eb)
{
  ip4_header_t *ip;
  udp_header_t *udp;
  ipfix_message_header_t *h;
  ipfix_set_header_t *s;
  ip4_ipfix_data_packet_t *tp;
  vlib_buffer_t *b0;
  u16 new_l0, old_l0;
  ip_csum_t sum0;
  vlib_frame_t *nf = 0;
  u32 *to_next;

  b0 = vlib_get_buffer (vm, eb->buffer_index);
  tp = vlib_buffer_get_current (b0);
  ip = (ip4_header_t *) & tp->ip4;
  udp = (udp_header_t *) (ip + 1);
  h = (ipfix_message_header_t *) (udp + 1);
  s = (ipfix_set_header_t *) (h + 1);

  /* FIXUP: message header export_time */
  h->export_time = clib_host_to_net_u32 ((u32)
					 (((f64) em->unix_time_0) +
					  (vlib_time_now (em->vlib_main) -
					   em->vlib_time_0)));

  /* FIXUP: message header sequence_number */
  h->sequence_number = clib_host_to_net_u32 (em->sequence_number++);

  /* FIXUP: lengths if different from default */
  if (PREDICT_FALSE (eb->records_in_this_buffer != DEFAULT_EXPORT_RECORDS))
    {
      s->set_id_length = ipfix_set_id_length (em->set_id /* set_id */ ,
					      b0->current_length -
					      (sizeof (*ip) + sizeof (*udp) +
					       sizeof (*h)));
      h->version_length =
	version_length (b0->current_length - (sizeof (*ip) + sizeof (*udp)));
      sum0 = ip->checksum;
      old_l0 = ip->length;
      new_l0 = clib_host_to_net_u16 ((u16) b0->current_length);
      sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t,
			     length /* changed member */ );
      ip->checksum = ip_csum_fold (sum0);
      ip->length = new_l0;
      udp->length = clib_host_to_net_u16 (b0->current_length - sizeof (*ip));
    }

  /* Enqueue pkts to ip4-lookup */

  nf = vlib_get_frame_to_node (vm, em->next_node_index);
  nf->n_vectors = 0;
  to_next = vlib_frame_vector_args (nf);
  nf->n_vectors = 1;
  to_next[0] = eb->buffer_index;
  vlib_put_frame_to_node (vm, em->next_node_index, nf);
  return (1);

}

#define EXPORT_TIMEOUT (20.0)
#define THREAD_PERIOD (30.0)
inline static uword
ioam_export_process_common (ioam_export_main_t * em, vlib_main_t * vm,
			    vlib_node_runtime_t * rt, vlib_frame_t * f,
			    u32 index)
{
  f64 now;
  f64 timeout = 30.0;
  uword event_type;
  uword *event_data = 0;
  int i;
  ioam_export_buffer_t *eb = 0, *new_eb = 0;
  u32 *vec_buffer_indices = 0;
  u32 *vec_buffer_to_be_sent = 0;
  u32 *thread_index = 0;
  u32 new_pool_index = 0;

  em->export_process_node_index = index;
  /* Wait for Godot... */
  vlib_process_wait_for_event_or_clock (vm, 1e9);
  event_type = vlib_process_get_events (vm, &event_data);
  if (event_type != 1)
    clib_warning ("bogus kickoff event received, %d", event_type);
  vec_reset_length (event_data);

  while (1)
    {
      vlib_process_wait_for_event_or_clock (vm, timeout);
      event_type = vlib_process_get_events (vm, &event_data);
      switch (event_type)
	{
	case 2:		/* Stop and Wait for kickoff again */
	  timeout = 1e9;
	  break;
	case 1:		/* kickoff : Check for unsent buffers */
	  timeout = THREAD_PERIOD;
	  break;
	case ~0:		/* timeout */
	  break;
	}
      vec_reset_length (event_data);
      now = vlib_time_now (vm);
      /*
       * Create buffers for threads that are not active enough
       * to send out the export records
       */
      for (i = 0; i < vec_len (em->buffer_per_thread); i++)
	{
	  /* If the worker thread is processing export records ignore further checks */
	  if (*em->lockp[i] == 1)
	    continue;
	  eb = pool_elt_at_index (em->buffer_pool, em->buffer_per_thread[i]);
	  if (eb->records_in_this_buffer > 0
	      && now > (eb->touched_at + EXPORT_TIMEOUT))
	    {
	      pool_get_aligned (em->buffer_pool, new_eb,
				CLIB_CACHE_LINE_BYTES);
	      clib_memset (new_eb, 0, sizeof (*new_eb));
	      if (ioam_export_init_buffer (em, vm, new_eb) == 1)
		{
		  new_pool_index = new_eb - em->buffer_pool;
		  vec_add (vec_buffer_indices, &new_pool_index, 1);
		  vec_add (vec_buffer_to_be_sent, &em->buffer_per_thread[i],
			   1);
		  vec_add (thread_index, &i, 1);
		}
	      else
		{
		  pool_put (em->buffer_pool, new_eb);
		  /*Give up */
		  goto CLEANUP;
		}
	    }
	}
      if (vec_len (thread_index) != 0)
	{
	  /*
	   * Now swap the buffers out
	   */
	  for (i = 0; i < vec_len (thread_index); i++)
	    {
	      while (clib_atomic_test_and_set (em->lockp[thread_index[i]]))
		;
	      em->buffer_per_thread[thread_index[i]] =
		vec_pop (vec_buffer_indices);
	      clib_atomic_release (em->lockp[thread_index[i]]);
	    }

	  /* Send the buffers */
	  for (i = 0; i < vec_len (vec_buffer_to_be_sent); i++)
	    {
	      eb =
		pool_elt_at_index (em->buffer_pool, vec_buffer_to_be_sent[i]);
	      ioam_export_send_buffer (em, vm, eb);
	      pool_put (em->buffer_pool, eb);
	    }
	}

    CLEANUP:
      /* Free any leftover/unused buffers and everything that was allocated */
      for (i = 0; i < vec_len (vec_buffer_indices); i++)
	{
	  new_eb = pool_elt_at_index (em->buffer_pool, vec_buffer_indices[i]);
	  vlib_buffer_free (vm, &new_eb->buffer_index, 1);
	  pool_put (em->buffer_pool, new_eb);
	}
      vec_free (vec_buffer_indices);
      vec_free (vec_buffer_to_be_sent);
      vec_free (thread_index);
    }
  return 0;			/* not so much */
}

#define ioam_export_node_common(EM, VM, N, F, HTYPE, L, V, NEXT, FIXUP_FUNC)   \
do {                                                                           \
  u32 n_left_from, *from, *to_next;                                            \
  export_next_t next_index;                                                    \
  u32 pkts_recorded = 0;                                                       \
  ioam_export_buffer_t *my_buf = 0;                                            \
  vlib_buffer_t *eb0 = 0;                                                      \
  u32 ebi0 = 0;                                                                \
  from = vlib_frame_vector_args (F);                                           \
  n_left_from = (F)->n_vectors;                                                \
  next_index = (N)->cached_next_index;                                         \
  while (clib_atomic_test_and_set ((EM)->lockp[(VM)->thread_index]));	       \
  my_buf = ioam_export_get_my_buffer (EM, (VM)->thread_index);                 \
  my_buf->touched_at = vlib_time_now (VM);                                     \
  while (n_left_from > 0)                                                      \
    {                                                                          \
      u32 n_left_to_next;                                                      \
      vlib_get_next_frame (VM, N, next_index, to_next, n_left_to_next);        \
      while (n_left_from >= 4 && n_left_to_next >= 2)                          \
	{                                                                      \
	  u32 next0 = NEXT;                                                    \
	  u32 next1 = NEXT;                                                    \
	  u32 bi0, bi1;                                                        \
	  HTYPE *ip0, *ip1;                                                    \
	  vlib_buffer_t *p0, *p1;                                              \
	  u32 ip_len0, ip_len1;                                                \
	  {                                                                    \
	    vlib_buffer_t *p2, *p3;                                            \
	    p2 = vlib_get_buffer (VM, from[2]);                                \
	    p3 = vlib_get_buffer (VM, from[3]);                                \
	    vlib_prefetch_buffer_header (p2, LOAD);                            \
	    vlib_prefetch_buffer_header (p3, LOAD);                            \
	    CLIB_PREFETCH (p2->data, 3 * CLIB_CACHE_LINE_BYTES, LOAD);         \
	    CLIB_PREFETCH (p3->data, 3 * CLIB_CACHE_LINE_BYTES, LOAD);         \
	  }                                                                    \
	  to_next[0] = bi0 = from[0];                                          \
	  to_next[1] = bi1 = from[1];                                          \
	  from += 2;                                                           \
	  to_next += 2;                                                        \
	  n_left_from -= 2;                                                    \
	  n_left_to_next -= 2;                                                 \
	  p0 = vlib_get_buffer (VM, bi0);                                      \
	  p1 = vlib_get_buffer (VM, bi1);                                      \
	  ip0 = vlib_buffer_get_current (p0);                                  \
	  ip1 = vlib_buffer_get_current (p1);                                  \
	  ip_len0 =                                                            \
	    clib_net_to_host_u16 (ip0->L) + sizeof (HTYPE);                    \
	  ip_len1 =                                                            \
	    clib_net_to_host_u16 (ip1->L) + sizeof (HTYPE);                    \
	  ebi0 = my_buf->buffer_index;                                         \
	  eb0 = vlib_get_buffer (VM, ebi0);                                    \
	  if (PREDICT_FALSE (eb0 == 0))                                        \
	    goto NO_BUFFER1;                                                   \
	  ip_len0 =                                                            \
	    ip_len0 > DEFAULT_EXPORT_SIZE ? DEFAULT_EXPORT_SIZE : ip_len0;     \
	  ip_len1 =                                                            \
	    ip_len1 > DEFAULT_EXPORT_SIZE ? DEFAULT_EXPORT_SIZE : ip_len1;     \
	  copy3cachelines (eb0->data + eb0->current_length, ip0, ip_len0);     \
	  FIXUP_FUNC(eb0, p0);                                                 \
	  eb0->current_length += DEFAULT_EXPORT_SIZE;                          \
	  my_buf->records_in_this_buffer++;                                    \
	  if (my_buf->records_in_this_buffer >= DEFAULT_EXPORT_RECORDS)        \
	    {                                                                  \
	      ioam_export_send_buffer (EM, VM, my_buf);                        \
	      ioam_export_init_buffer (EM, VM, my_buf);                        \
	    }                                                                  \
	  ebi0 = my_buf->buffer_index;                                         \
	  eb0 = vlib_get_buffer (VM, ebi0);                                    \
	  if (PREDICT_FALSE (eb0 == 0))                                        \
	    goto NO_BUFFER1;                                                   \
	  copy3cachelines (eb0->data + eb0->current_length, ip1, ip_len1);     \
	  FIXUP_FUNC(eb0, p1);                                                 \
	  eb0->current_length += DEFAULT_EXPORT_SIZE;                          \
	  my_buf->records_in_this_buffer++;                                    \
	  if (my_buf->records_in_this_buffer >= DEFAULT_EXPORT_RECORDS)        \
	    {                                                                  \
	      ioam_export_send_buffer (EM, VM, my_buf);                        \
	      ioam_export_init_buffer (EM, VM, my_buf);                        \
	    }                                                                  \
	  pkts_recorded += 2;                                                  \
	  if (PREDICT_FALSE (((node)->flags & VLIB_NODE_FLAG_TRACE)))          \
	    {                                                                  \
	      if (p0->flags & VLIB_BUFFER_IS_TRACED)                           \
		{                                                              \
		  export_trace_t *t =                                          \
		    vlib_add_trace (VM, node, p0, sizeof (*t));                \
		  t->flow_label =                                              \
		    clib_net_to_host_u32 (ip0->V);                             \
		  t->next_index = next0;                                       \
		}                                                              \
	      if (p1->flags & VLIB_BUFFER_IS_TRACED)                           \
		{                                                              \
		  export_trace_t *t =                                          \
		    vlib_add_trace (VM, N, p1, sizeof (*t));                   \
		  t->flow_label =                                              \
		    clib_net_to_host_u32 (ip1->V);                             \
		  t->next_index = next1;                                       \
		}                                                              \
	    }                                                                  \
	NO_BUFFER1:                                                            \
	  vlib_validate_buffer_enqueue_x2 (VM, N, next_index,                  \
					   to_next, n_left_to_next,            \
					   bi0, bi1, next0, next1);            \
	}                                                                      \
      while (n_left_from > 0 && n_left_to_next > 0)                            \
	{                                                                      \
	  u32 bi0;                                                             \
	  vlib_buffer_t *p0;                                                   \
	  u32 next0 = NEXT;                                                    \
	  HTYPE *ip0;                                                          \
	  u32 ip_len0;                                                         \
	  bi0 = from[0];                                                       \
	  to_next[0] = bi0;                                                    \
	  from += 1;                                                           \
	  to_next += 1;                                                        \
	  n_left_from -= 1;                                                    \
	  n_left_to_next -= 1;                                                 \
	  p0 = vlib_get_buffer (VM, bi0);                                      \
	  ip0 = vlib_buffer_get_current (p0);                                  \
	  ip_len0 =                                                            \
	    clib_net_to_host_u16 (ip0->L) + sizeof (HTYPE);                    \
	  ebi0 = my_buf->buffer_index;                                         \
	  eb0 = vlib_get_buffer (VM, ebi0);                                    \
	  if (PREDICT_FALSE (eb0 == 0))                                        \
	    goto NO_BUFFER;                                                    \
	  ip_len0 =                                                            \
	    ip_len0 > DEFAULT_EXPORT_SIZE ? DEFAULT_EXPORT_SIZE : ip_len0;     \
	  copy3cachelines (eb0->data + eb0->current_length, ip0, ip_len0);     \
	  FIXUP_FUNC(eb0, p0);                                                 \
	  eb0->current_length += DEFAULT_EXPORT_SIZE;                          \
	  my_buf->records_in_this_buffer++;                                    \
	  if (my_buf->records_in_this_buffer >= DEFAULT_EXPORT_RECORDS)        \
	    {                                                                  \
	      ioam_export_send_buffer (EM, VM, my_buf);                        \
	      ioam_export_init_buffer (EM, VM, my_buf);                        \
	    }                                                                  \
	  if (PREDICT_FALSE (((N)->flags & VLIB_NODE_FLAG_TRACE)               \
			     && (p0->flags & VLIB_BUFFER_IS_TRACED)))          \
	    {                                                                  \
	      export_trace_t *t = vlib_add_trace (VM, (N), p0, sizeof (*t));   \
	      t->flow_label =                                                  \
		clib_net_to_host_u32 (ip0->V);                                 \
	      t->next_index = next0;                                           \
	    }                                                                  \
	  pkts_recorded += 1;                                                  \
	NO_BUFFER:                                                             \
	  vlib_validate_buffer_enqueue_x1 (VM, N, next_index,                  \
					   to_next, n_left_to_next,            \
					   bi0, next0);                        \
	}                                                                      \
      vlib_put_next_frame (VM, N, next_index, n_left_to_next);                 \
    }                                                                          \
  vlib_node_increment_counter (VM, export_node.index,                          \
			       EXPORT_ERROR_RECORDED, pkts_recorded);          \
  *(EM)->lockp[(VM)->thread_index] = 0;                                        \
} while(0)

#endif /* __included_ioam_export_h__ */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */