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authorDave Wallace <dwallacelf@gmail.com>2017-09-06 01:20:02 -0400
committerFlorin Coras <florin.coras@gmail.com>2017-09-07 08:18:46 +0000
commit33e002b168a211b1d620f4fffbd3752c8f1f2129 (patch)
tree254a4df5af366150e6650704b677b05e7115218b /src/vnet/session/session.api
parent483041413842e04f6958ae8cae4135dc2262d43b (diff)
Fix session connect_* api message handling.
Change-Id: If7fd125989c90240de12953658d10007b9eb4f07 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Diffstat (limited to 'src/vnet/session/session.api')
-rw-r--r--src/vnet/session/session.api45
1 files changed, 13 insertions, 32 deletions
diff --git a/src/vnet/session/session.api b/src/vnet/session/session.api
index e01cc75e28b..30d2ae96bff 100644
--- a/src/vnet/session/session.api
+++ b/src/vnet/session/session.api
@@ -105,7 +105,7 @@ autoreply define unbind_uri {
@param client_queue_address - binary API client queue address. Used by
local server when connect was redirected.
*/
-define connect_uri {
+autoreply define connect_uri {
u32 client_index;
u32 context;
u8 uri[128];
@@ -113,31 +113,6 @@ define connect_uri {
u64 options[16];
};
-/** \brief vpp->client, connect reply
- @param context - sender context, to match reply w/ request
- @param retval - return code for the request
- @param handle - session handle
- @param server_rx_fifo - rx (vpp -> vpp-client) fifo address
- @param server_tx_fifo - tx (vpp-client -> vpp) fifo address
- @param vpp_event_queue_address - vpp's event queue address
- @param segment_size - size of segment to be attached. Only for redirects.
- @param segment_name_length - non-zero if the client needs to attach to
- the fifo segment. This should only happen
- if session was redirected.
- @param segment_name - set if the client needs to attach to the segment
-*/
-define connect_uri_reply {
- u32 context;
- i32 retval;
- u64 handle;
- u64 server_rx_fifo;
- u64 server_tx_fifo;
- u64 vpp_event_queue_address;
- u32 segment_size;
- u8 segment_name_length;
- u8 segment_name[128];
-};
-
/** \brief vpp->client, accept this session
@param context - sender context, to match reply w/ request
@param listener_handle - tells client which listener this pertains to
@@ -273,10 +248,9 @@ autoreply define unbind_sock {
used to perform redirects
@param options - socket options, fifo sizes, etc. when doing redirects
*/
-define connect_sock {
+autoreply define connect_sock {
u32 client_index;
u32 context;
- u32 app_connect;
u32 vrf;
u8 is_ip4;
u8 ip[16];
@@ -305,11 +279,19 @@ define bind_sock_reply {
u8 segment_name[128];
};
-/** \brief vpp/server->client, connect reply
+/* Dummy connect message -- needed to satisfy api generators
+*
+* NEVER USED, doxygen tags elided on purpose.
+*/
+define connect_session {
+ u32 client_index;
+ u32 context;
+};
+
+/** \brief vpp/server->client, connect reply -- used for all connect_* messages
@param context - sender context, to match reply w/ request
@param retval - return code for the request
@param handle - connection handle
- @param app_connect - application connection id from connect msg
@param server_rx_fifo - rx (vpp -> vpp-client) fifo address
@param server_tx_fifo - tx (vpp-client -> vpp) fifo address
@param vpp_event_queue_address - vpp's event queue address
@@ -318,11 +300,10 @@ define bind_sock_reply {
the fifo segment
@param segment_name - set if the client needs to attach to the segment
*/
-define connect_sock_reply {
+define connect_session_reply {
u32 context;
i32 retval;
u64 handle;
- u32 app_connect;
u64 server_rx_fifo;
u64 server_tx_fifo;
u64 vpp_event_queue_address;
='n316' href='#n316'>316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993
/*
 * Copyright (c) 2017-2019 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 SRC_VNET_TCP_TCP_DEBUG_H_
#define SRC_VNET_TCP_TCP_DEBUG_H_

#include <vlib/vlib.h>

/**
 * Build debugging infra unconditionally. Debug components controlled via
 * debug configuration. Comes with some overhead so it's not recommended for
 * production/performance scenarios. Takes priority over TCP_DEBUG_ENABLE.
 */
#define TCP_DEBUG_ALWAYS (0)
/**
 * Build debugging infra only if enabled. Debug components controlled via
 * macros that follow.
 */
#define TCP_DEBUG_ENABLE (0)

#define TCP_DEBUG_SM (0)
#define TCP_DEBUG_CC (0)
#define TCP_DEBUG_CS (0)
#define TCP_DEBUG_LC (0 || TCP_DEBUG_SM || TCP_DEBUG_CC || TCP_DEBUG_CS)

#define TCP_DEBUG (TCP_DEBUG_ALWAYS || TCP_DEBUG_ENABLE)
#define TCP_DEBUG_BUF_ALLOC (0)

#if TCP_DEBUG > 0
#define TRANSPORT_DEBUG (1)
#endif

#define TCP_CONCAT_HELPER(_a, _b) _a##_b
#define TCP_CC(_a, _b) TCP_CONCAT_HELPER(_a, _b)

#define tcp_evt_lvl(_evt) TCP_CC(_evt, _LVL)
#define tcp_evt_grp(_evt) TCP_CC(_evt, _GRP)
#define tcp_evt_handler(_evt, _args...) TCP_CC(_evt, _HANDLER) (_args)
#define tcp_evt_grp_dbg_lvl(_evt) tcp_dbg_main.grp_dbg_lvl[tcp_evt_grp (_evt)]

#define foreach_tcp_evt_grp					\
  _(LC, "life cycle")						\
  _(SM, "state machine")					\
  _(CC, "congestion control")					\
  _(CS, "cc stats")						\

typedef enum tcp_evt_grp_
{
#define _(sym, str) TCP_EVT_GRP_ ## sym,
  foreach_tcp_evt_grp
#undef _
  TCP_EVT_N_GRP
} tcp_evt_grp_e;

typedef struct tcp_dbg_main_
{
  u8 grp_dbg_lvl[TCP_EVT_N_GRP];
  u32 *free_track_indices;
} tcp_dbg_main_t;

extern tcp_dbg_main_t tcp_dbg_main;

#define foreach_tcp_dbg_evt					\
  _(INIT, 		LC, 1, "init")				\
  _(DEALLOC, 		LC, 1, "dealloc")			\
  _(OPEN, 		LC, 1, "open")				\
  _(CLOSE, 		LC, 1, "close")				\
  _(BIND, 		LC, 1, "bind")				\
  _(UNBIND, 		LC, 1, "unbind")			\
  _(DELETE, 		LC, 1, "delete")			\
  _(SYN_RCVD, 		LC, 1, "SYN rcvd")			\
  _(STATE_CHANGE, 	LC, 1, "state change")			\
  _(SYN_SENT, 		SM, 1, "SYN sent")			\
  _(SYN_RXT, 		SM, 1, "SYN retransmit")		\
  _(SYNACK_SENT, 	SM, 1, "SYNACK sent")			\
  _(SYNACK_RCVD, 	SM, 1, "SYNACK rcvd")			\
  _(FIN_SENT, 		SM, 1, "FIN sent")			\
  _(FIN_RCVD, 		SM, 1, "FIN rcvd")			\
  _(RST_SENT, 		SM, 1, "RST sent")			\
  _(RST_RCVD, 		SM, 1, "RST rcvd")			\
  _(TIMER_POP, 		SM, 1, "timer pop")			\
  _(SEG_INVALID, 	SM, 2, "invalid segment")		\
  _(PAWS_FAIL, 		SM, 2, "failed paws check")		\
  _(ACK_RCV_ERR, 	SM, 2, "invalid ack")			\
  _(RCV_WND_SHRUNK, 	SM, 2, "shrunk rcv_wnd")		\
  _(ACK_SENT, 		SM, 3, "ACK sent")			\
  _(ACK_RCVD, 		SM, 3, "ACK rcvd")			\
  _(PKTIZE, 		SM, 3, "packetize")			\
  _(INPUT, 		SM, 3, "in")				\
  _(OUTPUT, 		SM, 4, "output")			\
  _(SND_WND, 		SM, 4, "snd_wnd update")		\
  _(CC_EVT, 		CC, 1, "cc event")			\
  _(CC_RTX, 		CC, 2, "retransmit")			\
  _(CC_PACK, 		CC, 2, "cc partial ack")		\
  _(DUPACK_SENT, 	CC, 2, "DUPACK sent")			\
  _(DUPACK_RCVD, 	CC, 2, "DUPACK rcvd")			\
  _(CC_SCOREBOARD, 	CC, 2, "scoreboard stats")		\
  _(CC_SACKS, 		CC, 2, "snd sacks stats")		\
  _(CC_INPUT, 		CC, 2, "ooo data delivered")		\
  _(CC_STAT, 		CS, 1, "cc stats")			\
  _(CC_RTO_STAT,	CS, 1, "cc rto stats")			\

typedef enum tcp_evt_types_
{
#define _(sym, grp, lvl, str) TCP_EVT_##sym,
  foreach_tcp_dbg_evt
#undef _
} tcp_evt_types_e;

typedef enum tcp_evt_lvl_
{
#define _(sym, grp, lvl, str) TCP_EVT_## sym ## _LVL = lvl,
  foreach_tcp_dbg_evt
#undef _
} tcp_evt_lvl_e;

typedef enum tcp_evt_to_grp_
{
#define _(sym, grp, lvl, str) TCP_EVT_ ## sym ## _GRP = TCP_EVT_GRP_ ## grp,
  foreach_tcp_dbg_evt
#undef _
} tcp_evt_to_grp_e;

#if TCP_DEBUG_ALWAYS > 0
#define TCP_EVT(_evt, _args...) 					\
  if (PREDICT_FALSE (tcp_evt_grp_dbg_lvl (_evt) >= tcp_evt_lvl (_evt)))	\
    tcp_evt_handler (_evt, _args)
#define TCP_DBG(_fmt, _args...) clib_warning (_fmt, ##_args)
#elif TCP_DEBUG_ENABLE > 0
#define TCP_EVT(_evt, _args...) tcp_evt_handler(_evt, _args)
#define TCP_DBG(_fmt, _args...) clib_warning (_fmt, ##_args)
#else
#define TCP_EVT(_evt, _args...)
#define TCP_DBG(_fmt, _args...)
#endif

void tcp_evt_track_register (elog_track_t * et);
void tcp_debug_init (void);

#define TCP_DECLARE_ETD(_tc, _e, _size)					\
struct									\
{									\
  u32 data[_size];							\
} * ed;									\
ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, _e, 			\
                      _tc->c_elog_track)				\

/*
 * Event handlers definitions
 */

#if TCP_DEBUG_LC || TCP_DEBUG_ALWAYS

/*
 * Infra and evt track setup
 */

#define TCP_DBG_IP_TAG_LCL(_tc)						\
{									\
  if (_tc->c_is_ip4)							\
    {									\
      ELOG_TYPE_DECLARE (_e) =						\
      {									\
        .format = "lcl: %d.%d.%d.%d:%d",				\
        .format_args = "i4i4i4i4i4",					\
      };								\
      TCP_DECLARE_ETD(_tc, _e, 5);					\
      ed->data[0] = _tc->c_lcl_ip.ip4.as_u8[0];				\
      ed->data[1] = _tc->c_lcl_ip.ip4.as_u8[1];				\
      ed->data[2] = _tc->c_lcl_ip.ip4.as_u8[2];				\
      ed->data[3] = _tc->c_lcl_ip.ip4.as_u8[3];				\
      ed->data[4] = clib_net_to_host_u16(_tc->c_lcl_port);		\
    }									\
}

#define TCP_DBG_IP_TAG_RMT(_tc)						\
{									\
  if (_tc->c_is_ip4)							\
    {									\
      ELOG_TYPE_DECLARE (_e) =						\
      {									\
        .format = "rmt: %d.%d.%d.%d:%d",				\
        .format_args = "i4i4i4i4i4",					\
      };								\
      TCP_DECLARE_ETD(_tc, _e, 5);					\
      ed->data[0] = _tc->c_rmt_ip.ip4.as_u8[0];				\
      ed->data[1] = _tc->c_rmt_ip.ip4.as_u8[1];				\
      ed->data[2] = _tc->c_rmt_ip.ip4.as_u8[2];				\
      ed->data[3] = _tc->c_rmt_ip.ip4.as_u8[3];				\
      ed->data[4] = clib_net_to_host_u16(_tc->c_rmt_port);		\
    }									\
}

#define TCP_EVT_INIT_HANDLER(_tc, _is_l, ...)				\
{									\
  char *_fmt = _is_l ? "l[%d].%d:%d%c" : "[%d].%d:%d->.%d:%d%c";	\
  if (_tc->c_is_ip4)							\
    {									\
      _tc->c_elog_track.name =						\
  	(char *) format (0, _fmt, _tc->c_thread_index, 			\
			 _tc->c_lcl_ip.ip4.as_u8[3],			\
			 clib_net_to_host_u16(_tc->c_lcl_port),		\
			 _tc->c_rmt_ip.ip4.as_u8[3], 			\
			 clib_net_to_host_u16(_tc->c_rmt_port), 0);	\
    }									\
  else									\
      _tc->c_elog_track.name =						\
	(char *) format (0, _fmt, _tc->c_thread_index, 			\
			 _tc->c_lcl_ip.ip6.as_u8[15],			\
			 clib_net_to_host_u16(_tc->c_lcl_port),		\
			 _tc->c_rmt_ip.ip6.as_u8[15], 			\
			 clib_net_to_host_u16(_tc->c_rmt_port), 0);	\
  tcp_evt_track_register (&_tc->c_elog_track);				\
  TCP_DBG_IP_TAG_LCL(_tc);						\
  TCP_DBG_IP_TAG_RMT(_tc);						\
}

#define TCP_EVT_DEALLOC_HANDLER(_tc, ...)				\
{									\
  vec_free (_tc->c_elog_track.name);					\
  vec_add1 (tcp_dbg_main.free_track_indices, 				\
            _tc->c_elog_track.track_index_plus_one - 1);		\
}

#define TCP_EVT_OPEN_HANDLER(_tc, ...)					\
{									\
  TCP_EVT_INIT_HANDLER(_tc, 0);						\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "open: index %d",						\
    .format_args = "i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 1);						\
  ed->data[0] = _tc->c_c_index;						\
}

#define TCP_EVT_CLOSE_HANDLER(_tc, ...)					\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "close: cidx %d",						\
    .format_args = "i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 1);						\
  ed->data[0] = _tc->c_c_index;						\
}

#define TCP_EVT_BIND_HANDLER(_tc, ...)					\
{									\
  TCP_EVT_INIT_HANDLER(_tc, 1);						\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "bind: listener %d",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 1);						\
  ed->data[0] = _tc->c_c_index;						\
}

#define TCP_EVT_SYN_RCVD_HANDLER(_tc,_init, ...)			\
{									\
  if (_init)								\
    TCP_EVT_INIT_HANDLER(_tc, 0);					\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "syn-rx: cidx %u sidx %u irs %u",				\
    .format_args = "i4i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 3);						\
  ed->data[0] = _tc->c_c_index;						\
  ed->data[1] = _tc->c_s_index;						\
  ed->data[2] = _tc->irs;						\
  TCP_EVT_STATE_CHANGE_HANDLER(_tc);					\
}

#define TCP_EVT_UNBIND_HANDLER(_tc, ...)				\
{									\
  TCP_EVT_DEALLOC_HANDLER(_tc);						\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "unbind: listener %d",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 1);						\
  ed->data[0] = _tc->c_c_index;						\
  TCP_EVT_DEALLOC_HANDLER(_tc);						\
}

#define TCP_EVT_DELETE_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "delete: cidx %d sidx %d",				\
    .format_args = "i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 2);						\
  ed->data[0] = _tc->c_c_index;						\
  ed->data[1] = _tc->c_s_index;						\
  TCP_EVT_DEALLOC_HANDLER(_tc);						\
}

#endif

/*
 * State machine
 */
#if TCP_DEBUG_SM > 0 || TCP_DEBUG_ALWAYS

#define TCP_EVT_STATE_CHANGE_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "state: %s",						\
    .format_args = "t4",						\
    .n_enum_strings = 11,						\
    .enum_strings = {                                           	\
      "closed",	                                             		\
      "listen",                                                 	\
      "syn-sent",                                                 	\
      "syn-rcvd",							\
      "established",							\
      "close_wait",							\
      "fin-wait-1",							\
      "last-ack",							\
      "closing",							\
      "fin-wait-2",							\
      "time-wait",							\
    },  								\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 1);						\
  ed->data[0] = _tc->state;						\
}

#define TCP_EVT_SYN_SENT_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "syn-tx: iss %u snd_una %u snd_nxt %u",			\
    .format_args = "i4i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 3);						\
  ed->data[0] = _tc->iss;						\
  ed->data[1] = _tc->snd_una - _tc->iss;				\
  ed->data[2] = _tc->snd_nxt - _tc->iss;				\
  TCP_EVT_STATE_CHANGE_HANDLER(_tc);					\
}

#define TCP_EVT_SYNACK_SENT_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "synack-tx: iss %u irs %u snd_una %u snd_nxt %u rcv_nxt %u",\
    .format_args = "i4i4i4i4i4",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _tc->iss;						\
  ed->data[1] = _tc->irs;						\
  ed->data[2] = _tc->snd_una - _tc->iss;				\
  ed->data[3] = _tc->snd_nxt - _tc->iss;				\
  ed->data[4] = _tc->rcv_nxt - _tc->irs;				\
}

#define TCP_EVT_SYNACK_RCVD_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "synack-rx: iss %u irs %u snd_una %u snd_nxt %u rcv_nxt %u",\
    .format_args = "i4i4i4i4i4",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _tc->iss;						\
  ed->data[1] = _tc->irs;						\
  ed->data[2] = _tc->snd_una - _tc->iss;				\
  ed->data[3] = _tc->snd_nxt - _tc->iss;				\
  ed->data[4] = _tc->rcv_nxt - _tc->irs;				\
  TCP_EVT_STATE_CHANGE_HANDLER(_tc);					\
}

#define TCP_EVT_FIN_SENT_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "fin-tx: snd_nxt %d rcv_nxt %d",				\
    .format_args = "i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 2);						\
  ed->data[0] = _tc->snd_nxt - _tc->iss;				\
  ed->data[1] = _tc->rcv_nxt - _tc->irs;				\
}

#define TCP_EVT_RST_SENT_HANDLER(_tc, ...)				\
{									\
if (_tc)								\
  {									\
    ELOG_TYPE_DECLARE (_e) =						\
    {									\
      .format = "rst-tx: snd_nxt %d rcv_nxt %d",			\
      .format_args = "i4i4",						\
    };									\
    TCP_DECLARE_ETD(_tc, _e, 2);					\
    ed->data[0] = _tc->snd_nxt - _tc->iss;				\
    ed->data[1] = _tc->rcv_nxt - _tc->irs;				\
    TCP_EVT_STATE_CHANGE_HANDLER(_tc);					\
  }									\
}

#define TCP_EVT_FIN_RCVD_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "fin-rx: snd_nxt %d rcv_nxt %d",				\
    .format_args = "i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 2);						\
  ed->data[0] = _tc->snd_nxt - _tc->iss;				\
  ed->data[1] = _tc->rcv_nxt - _tc->irs;				\
}

#define TCP_EVT_RST_RCVD_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "rst-rx: snd_nxt %d rcv_nxt %d",				\
    .format_args = "i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 2);						\
  ed->data[0] = _tc->snd_nxt - _tc->iss;				\
  ed->data[1] = _tc->rcv_nxt - _tc->irs;				\
}

#define TCP_EVT_SYN_RXT_HANDLER(_tc, _type, ...)			\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "%s-rxt: iss %u irs %u snd_nxt %u rcv_nxt %u",		\
    .format_args = "t4i4i4i4i4",					\
    .n_enum_strings = 2,						\
    .enum_strings = {                                           	\
	"syn",	                                             		\
        "synack",							\
    },  								\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _type;							\
  ed->data[1] = _tc->iss;						\
  ed->data[2] = _tc->irs;						\
  ed->data[3] = _tc->snd_nxt - _tc->iss;				\
  ed->data[4] = _tc->rcv_nxt - _tc->irs;				\
}

#define TCP_EVT_TIMER_POP_HANDLER(_tc_index, _timer_id, ...)            \
{                                                               	\
  tcp_connection_t *_tc;                                        	\
  if (_timer_id == TCP_TIMER_RETRANSMIT_SYN)                        	\
    {                                                           	\
      _tc = tcp_half_open_connection_get (_tc_index);           	\
    }                                                           	\
  else                                                          	\
    {                                                           	\
      u32 _thread_index = vlib_get_thread_index ();                 	\
      _tc = tcp_connection_get (_tc_index, _thread_index);      	\
    }                                                           	\
  ELOG_TYPE_DECLARE (_e) =                                      	\
  {                                                             	\
    .format = "timer-pop: %s cidx %u sidx %u",                  	\
    .format_args = "t4i4i4",                                      	\
    .n_enum_strings = 8,                                        	\
    .enum_strings = {                                           	\
      "retransmit",                                             	\
      "delack",                                                 	\
      "persist",                                                    	\
      "keep",                                                   	\
      "waitclose",                                              	\
      "retransmit syn",                                         	\
      "establish",                                              	\
      "establish-ao",                                              	\
    },                                                          	\
  };                                                            	\
  if (_tc)								\
    {									\
      TCP_DECLARE_ETD(_tc, _e, 3);                                      \
      ed->data[0] = _timer_id;                                      	\
      ed->data[1] = _tc->c_c_index;                                    	\
      ed->data[2] = _tc->c_s_index;                                    	\
    }									\
  else									\
    {									\
      clib_warning ("pop %d for unexisting connection %d", _timer_id,	\
		    _tc_index);						\
    }									\
}

#else
#define TCP_EVT_SYN_SENT_HANDLER(_tc, ...)
#define TCP_EVT_SYNACK_SENT_HANDLER(_tc, ...)
#define TCP_EVT_SYNACK_RCVD_HANDLER(_tc, ...)
#define TCP_EVT_SYN_RXT_HANDLER(_tc, ...)
#define TCP_EVT_FIN_SENT_HANDLER(_tc, ...)
#define TCP_EVT_RST_SENT_HANDLER(_tc, ...)
#define TCP_EVT_FIN_RCVD_HANDLER(_tc, ...)
#define TCP_EVT_RST_RCVD_HANDLER(_tc, ...)
#define TCP_EVT_STATE_CHANGE_HANDLER(_tc, ...)
#define TCP_EVT_TIMER_POP_HANDLER(_tc_index, _timer_id, ...)
#endif

#if TCP_DEBUG_SM > 1 || TCP_DEBUG_ALWAYS
#define TCP_EVT_SEG_INVALID_HANDLER(_tc, _btcp, ...)			\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "seg-inv: seq %u end %u rcv_las %u rcv_nxt %u rcv_wnd %u",\
    .format_args = "i4i4i4i4i4",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _btcp.seq_number - _tc->irs;				\
  ed->data[1] = _btcp.seq_end - _tc->irs;				\
  ed->data[2] = _tc->rcv_las - _tc->irs;				\
  ed->data[3] = _tc->rcv_nxt - _tc->irs;				\
  ed->data[4] = _tc->rcv_wnd;						\
}

#define TCP_EVT_PAWS_FAIL_HANDLER(_tc, _seq, _end, ...)			\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "paws-err: seq %u end %u tsval %u tsval_recent %u",	\
    .format_args = "i4i4i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 4);						\
  ed->data[0] = _seq - _tc->irs;					\
  ed->data[1] = _end - _tc->irs;					\
  ed->data[2] = _tc->rcv_opts.tsval;					\
  ed->data[3] = _tc->tsval_recent;					\
}

#define TCP_EVT_ACK_RCV_ERR_HANDLER(_tc, _type, _ack, ...)		\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "ack-err: %s ack %u snd_una %u snd_nxt %u",		\
    .format_args = "t4i4i4i4",						\
    .n_enum_strings = 3,						\
    .enum_strings = {                                           	\
      "invalid",                                                 	\
      "old",                                                 		\
      "future",								\
    }, 									\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 4);						\
  ed->data[0] = _type;							\
  ed->data[1] = _ack - _tc->iss;					\
  ed->data[2] = _tc->snd_una - _tc->iss;				\
  ed->data[3] = _tc->snd_nxt - _tc->iss;				\
}

#define TCP_EVT_RCV_WND_SHRUNK_HANDLER(_tc, _obs, _av, ...)		\
{									\
if (_av > 0) 								\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "huh?: rcv_wnd %u obsd %u av %u rcv_nxt %u rcv_las %u",	\
    .format_args = "i4i4i4i4i4",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _tc->rcv_wnd;						\
  ed->data[1] = _obs;							\
  ed->data[2] = _av;							\
  ed->data[3] = _tc->rcv_nxt - _tc->irs;				\
  ed->data[4] = _tc->rcv_las - _tc->irs;				\
}									\
}
#else
#define TCP_EVT_SEG_INVALID_HANDLER(_tc, _btcp, ...)
#define TCP_EVT_PAWS_FAIL_HANDLER(_tc, _seq, _end, ...)
#define TCP_EVT_ACK_RCV_ERR_HANDLER(_tc, _type, _ack, ...)
#define TCP_EVT_RCV_WND_SHRUNK_HANDLER(_tc, _obs, _av, ...)
#endif

#if TCP_DEBUG_SM > 2 || TCP_DEBUG_ALWAYS

#define TCP_EVT_ACK_SENT_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "ack-tx: acked %u rcv_nxt %u rcv_wnd %u snd_nxt %u snd_wnd %u",\
    .format_args = "i4i4i4i4i4",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _tc->rcv_nxt - _tc->rcv_las;				\
  ed->data[1] = _tc->rcv_nxt - _tc->irs;				\
  ed->data[2] = _tc->rcv_wnd;						\
  ed->data[3] = _tc->snd_nxt - _tc->iss;				\
  ed->data[4] = _tc->snd_wnd;						\
}

#define TCP_EVT_ACK_RCVD_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "ack-rx: %u snd_una %u snd_wnd %u cwnd %u inflight %u",	\
    .format_args = "i4i4i4i4i4",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _tc->bytes_acked;					\
  ed->data[1] = _tc->snd_una - _tc->iss;				\
  ed->data[2] = _tc->snd_wnd;						\
  ed->data[3] = _tc->cwnd;						\
  ed->data[4] = tcp_flight_size(_tc);					\
}

#define TCP_EVT_PKTIZE_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "tx: una %u snd_nxt %u space %u flight %u rcv_wnd %u",\
    .format_args = "i4i4i4i4i4",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _tc->snd_una - _tc->iss;				\
  ed->data[1] = _tc->snd_nxt - _tc->iss;				\
  ed->data[2] = tcp_available_output_snd_space (_tc);			\
  ed->data[3] = tcp_flight_size (_tc);					\
  ed->data[4] = _tc->rcv_wnd;						\
}

#define TCP_EVT_INPUT_HANDLER(_tc, _type, _len, _written, ...)		\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "in: %s len %u written %d rcv_nxt %u rcv_wnd(o) %d",	\
    .format_args = "t4i4i4i4i4",					\
    .n_enum_strings = 2,                                        	\
    .enum_strings = {                                           	\
      "order",   	                                        	\
      "ooo",   								\
    },									\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _type;							\
  ed->data[1] = _len;							\
  ed->data[2] = _written;						\
  ed->data[3] = (_tc->rcv_nxt - _tc->irs) + _written;			\
  ed->data[4] = _tc->rcv_wnd - (_tc->rcv_nxt - _tc->rcv_las);		\
}

#else
#define TCP_EVT_ACK_SENT_HANDLER(_tc, ...)
#define TCP_EVT_ACK_RCVD_HANDLER(_tc, ...)
#define TCP_EVT_PKTIZE_HANDLER(_tc, ...)
#define TCP_EVT_INPUT_HANDLER(_tc, _type, _len, _written, ...)
#endif

/*
 * State machine verbose
 */
#if TCP_DEBUG_SM > 3 || TCP_DEBUG_ALWAYS
#define TCP_EVT_SND_WND_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "snd-wnd update: %u ",					\
    .format_args = "i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 1);						\
  ed->data[0] = _tc->snd_wnd;						\
}

#define TCP_EVT_OUTPUT_HANDLER(_tc, flags, n_bytes,...)			\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "out: flags %x, bytes %u",				\
    .format_args = "i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 2);						\
  ed->data[0] = flags;							\
  ed->data[1] = n_bytes;						\
}
#else
#define TCP_EVT_SND_WND_HANDLER(_tc, ...)
#define TCP_EVT_OUTPUT_HANDLER(_tc, flags, n_bytes,...)
#endif

/*
 * Congestion Control
 */

#if TCP_DEBUG_CC || TCP_DEBUG_ALWAYS

#define TCP_EVT_CC_EVT_PRINT(_tc, _sub_evt)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "cc: %s snd_space %u snd_una %u out %u flight %u",	\
    .format_args = "t4i4i4i4i4",					\
    .n_enum_strings = 7,						\
    .enum_strings = {                                           	\
      "fast-rxt",	                                             	\
      "first-rxt",                                                 	\
      "rxt-timeout",                                                 	\
      "recovered",							\
      "congestion",							\
      "undo",								\
      "recovery",							\
    },  								\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _sub_evt;						\
  ed->data[1] = tcp_available_cc_snd_space (_tc);			\
  ed->data[2] = _tc->snd_una - _tc->iss;				\
  ed->data[3] = tcp_bytes_out(_tc);					\
  ed->data[4] = tcp_flight_size (_tc);					\
}

#define TCP_EVT_CC_EVT_HANDLER(_tc, _sub_evt, ...)			\
{									\
  if (_tc->snd_una != _tc->iss)						\
    TCP_EVT_CC_STAT_PRINT (_tc);					\
  if ((_sub_evt <= 1 && TCP_DEBUG_CC > 1)				\
      || (_sub_evt > 1 && TCP_DEBUG_CC > 0))				\
      TCP_EVT_CC_EVT_PRINT (_tc, _sub_evt);				\
}
#else
#define TCP_EVT_CC_EVT_HANDLER(_tc, _sub_evt, ...)			\

#endif

#if TCP_DEBUG_CC > 1 || TCP_DEBUG_ALWAYS
#define TCP_EVT_CC_RTX_HANDLER(_tc, offset, n_bytes, ...)		\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "rxt: snd_nxt %u offset %u snd %u rxt %u",		\
    .format_args = "i4i4i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 4);						\
  ed->data[0] = _tc->snd_nxt - _tc->iss;				\
  ed->data[1] = offset;							\
  ed->data[2] = n_bytes;						\
  ed->data[3] = _tc->snd_rxt_bytes;					\
}

#define TCP_EVT_DUPACK_SENT_HANDLER(_tc, _btcp, ...)			\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "dack-tx: rcv_nxt %u seq %u rcv_wnd %u snd_nxt %u av_wnd %u",\
    .format_args = "i4i4i4i4i4",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _tc->rcv_nxt - _tc->irs;				\
  ed->data[1] = _btcp.seq_number - _tc->irs;				\
  ed->data[2] = _tc->rcv_wnd;						\
  ed->data[3] = _tc->snd_nxt - _tc->iss;				\
  ed->data[4] = tcp_available_snd_wnd(_tc);				\
}

#define TCP_EVT_DUPACK_RCVD_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "dack-rx: snd_una %u cwnd %u snd_wnd %u flight %u rcv_wnd %u",\
    .format_args = "i4i4i4i4i4",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _tc->snd_una - _tc->iss;				\
  ed->data[1] = _tc->cwnd;						\
  ed->data[2] = _tc->snd_wnd;						\
  ed->data[3] = tcp_flight_size(_tc);					\
  ed->data[4] = _tc->rcv_wnd;						\
}

#define TCP_EVT_CC_PACK_HANDLER(_tc, ...)				\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "pack: snd_una %u snd_nxt %u",				\
    .format_args = "i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 2);						\
  ed->data[0] = _tc->snd_una - _tc->iss;				\
  ed->data[1] = _tc->snd_nxt - _tc->iss;				\
}
#define TCP_EVT_CC_SCOREBOARD_HANDLER(_tc, ...)				\
{									\
if (TCP_DEBUG_CC > 1 && _tc->sack_sb.last_sacked_bytes)			\
  {									\
    ELOG_TYPE_DECLARE (_e) =						\
    {									\
      .format = "sb1: holes %u lost %u sacked %u high %u highrxt %u",	\
      .format_args = "i4i4i4i4i4",					\
    };									\
    TCP_DECLARE_ETD(_tc, _e, 5);					\
    ed->data[0] = pool_elts(_tc->sack_sb.holes);			\
    ed->data[1] = _tc->sack_sb.lost_bytes;				\
    ed->data[2] = _tc->sack_sb.sacked_bytes;				\
    ed->data[3] = _tc->sack_sb.high_sacked - _tc->iss;			\
    ed->data[4] = _tc->sack_sb.high_rxt - _tc->iss;			\
  }									\
if (TCP_DEBUG_CC > 1 && _tc->sack_sb.last_sacked_bytes)			\
  {									\
    sack_scoreboard_hole_t *hole;					\
    hole = scoreboard_first_hole (&_tc->sack_sb);			\
    ELOG_TYPE_DECLARE (_e) =						\
    {									\
      .format = "sb2: first start: %u end %u last start %u end %u",	\
      .format_args = "i4i4i4i4",					\
    };									\
    TCP_DECLARE_ETD(_tc, _e, 4);					\
    ed->data[0] = hole ? hole->start - _tc->iss : 0;			\
    ed->data[1] = hole ? hole->end - _tc->iss : 0;			\
    hole = scoreboard_last_hole (&_tc->sack_sb);			\
    ed->data[2] = hole ? hole->start - _tc->iss : 0;			\
    ed->data[3] = hole ? hole->end - _tc->iss : 0;			\
  }									\
}
#define TCP_EVT_CC_SACKS_HANDLER(_tc, ...)				\
{									\
if (TCP_DEBUG_CC > 1)							\
  {									\
    ELOG_TYPE_DECLARE (_e) =						\
    {									\
      .format = "sacks: blocks %u bytes %u",				\
      .format_args = "i4i4",						\
    };									\
    TCP_DECLARE_ETD(_tc, _e, 2);					\
    ed->data[0] = vec_len (_tc->snd_sacks);				\
    ed->data[1] = tcp_sack_list_bytes (_tc);				\
  }									\
}
#define TCP_EVT_CC_INPUT_HANDLER(_tc, _len, _written, ...)		\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "cc input: len %u written %d rcv_nxt %u rcv_wnd(o) %d",	\
    .format_args = "i4i4i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 4);						\
  ed->data[0] = _len;							\
  ed->data[1] = _written;						\
  ed->data[2] = _tc->rcv_nxt - _tc->irs;				\
  ed->data[3] = _tc->rcv_wnd - (_tc->rcv_nxt - _tc->rcv_las);		\
}
#else
#define TCP_EVT_CC_RTX_HANDLER(_tc, offset, n_bytes, ...)
#define TCP_EVT_DUPACK_SENT_HANDLER(_tc, _btcp, ...)
#define TCP_EVT_DUPACK_RCVD_HANDLER(_tc, ...)
#define TCP_EVT_CC_PACK_HANDLER(_tc, ...)
#define TCP_EVT_CC_SCOREBOARD_HANDLER(_tc, ...)
#define TCP_EVT_CC_SACKS_HANDLER(_tc, ...)
#define TCP_EVT_CC_INPUT_HANDLER(_tc, _len, _written, ...)
#endif

/*
 * Congestion control stats
 */
#if TCP_DEBUG_CS || TCP_DEBUG_ALWAYS

#define STATS_INTERVAL 1

#define tcp_cc_time_to_print_stats(_tc)					\
  _tc->c_cc_stat_tstamp + STATS_INTERVAL < tcp_time_now() 		\
  || tcp_in_fastrecovery (_tc)						\

#define TCP_EVT_CC_RTO_STAT_PRINT(_tc)					\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "rcv_stat: rto %u srtt %u mrtt-us %u rttvar %u",		\
    .format_args = "i4i4i4i4",						\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 4);						\
  ed->data[0] = _tc->rto;						\
  ed->data[1] = _tc->srtt;						\
  ed->data[2] = (u32) (_tc->mrtt_us * 1e6);				\
  ed->data[3] = _tc->rttvar;	 					\
}

#define TCP_EVT_CC_RTO_STAT_HANDLER(_tc, ...)				\
{									\
if (tcp_cc_time_to_print_stats (_tc))					\
{									\
  TCP_EVT_CC_RTO_STAT_PRINT (_tc);					\
  _tc->c_cc_stat_tstamp = tcp_time_now ();				\
}									\
}

#define TCP_EVT_CC_SND_STAT_PRINT(_tc)					\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "snd_stat: cc_space %u sacked %u lost %u out %u rxt %u",	\
    .format_args = "i4i4i4i4i4",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = tcp_available_cc_snd_space (_tc);			\
  ed->data[1] = _tc->sack_sb.sacked_bytes;				\
  ed->data[2] = _tc->sack_sb.lost_bytes;				\
  ed->data[3] = tcp_bytes_out (_tc);					\
  ed->data[3] = _tc->snd_rxt_bytes;					\
}

#define TCP_EVT_CC_SND_STAT_HANDLER(_tc, ...)				\
{									\
if (tcp_cc_time_to_print_stats (_tc))					\
{									\
    TCP_EVT_CC_SND_STAT_PRINT(_tc);					\
    _tc->c_cc_stat_tstamp = tcp_time_now ();				\
}									\
}

#define TCP_EVT_CC_STAT_PRINT(_tc)					\
{									\
  ELOG_TYPE_DECLARE (_e) =						\
  {									\
    .format = "cc_stat: cwnd %u flight %u space %u ssthresh %u snd_wnd %u",\
    .format_args = "i4i4i4i4i4",					\
  };									\
  TCP_DECLARE_ETD(_tc, _e, 5);						\
  ed->data[0] = _tc->cwnd;						\
  ed->data[1] = tcp_flight_size (_tc);					\
  ed->data[2] = tcp_snd_space (_tc);					\
  ed->data[3] = _tc->ssthresh;						\
  ed->data[4] = _tc->snd_wnd;						\
  TCP_EVT_CC_RTO_STAT_PRINT (_tc);					\
  TCP_EVT_CC_SND_STAT_PRINT (_tc);					\
}

#define TCP_EVT_CC_STAT_HANDLER(_tc, ...)				\
{									\
if (tcp_cc_time_to_print_stats (_tc))					\
{									\
  TCP_EVT_CC_STAT_PRINT (_tc);						\
  _tc->c_cc_stat_tstamp = tcp_time_now();				\
}									\
}
#else
#define TCP_EVT_CC_STAT_HANDLER(_tc, ...)
#define TCP_EVT_CC_STAT_PRINT(_tc)
#endif

/*
 * Buffer allocation
 */
#if TCP_DEBUG_BUF_ALLOC

#define TCP_DBG_BUFFER_ALLOC_MAYBE_FAIL(thread_index)			\
{									\
  static u32 *buffer_fail_counters;					\
  if (PREDICT_FALSE (buffer_fail_counters == 0))			\
    {									\
      u32 num_threads;							\
      vlib_thread_main_t *vtm = vlib_get_thread_main ();		\
      num_threads = 1 /* main thread */  + vtm->n_threads;		\
      vec_validate (buffer_fail_counters, num_threads - 1);		\
    }									\
  if (PREDICT_FALSE (tcp_cfg.buffer_fail_fraction != 0.0))		\
    {									\
      if (PREDICT_TRUE (buffer_fail_counters[thread_index] > 0))	\
        {								\
          if ((1.0 / (f32) (buffer_fail_counters[thread_index]))	\
              < tcp_cfg.buffer_fail_fraction)				\
            {								\
              buffer_fail_counters[thread_index] = 0.0000001;		\
              return -1;						\
            }								\
        }								\
      buffer_fail_counters[thread_index] ++;				\
    }									\
}
#else
#define TCP_DBG_BUFFER_ALLOC_MAYBE_FAIL(thread_index)
#endif

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