FD.io VPP
v21.10.1-2-g0a485f517
Vector Packet Processing
tcp_debug.h
Go to the documentation of this file.
1
/*
2
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
3
* Licensed under the Apache License, Version 2.0 (the "License");
4
* you may not use this file except in compliance with the License.
5
* You may obtain a copy of the License at:
6
*
7
* http://www.apache.org/licenses/LICENSE-2.0
8
*
9
* Unless required by applicable law or agreed to in writing, software
10
* distributed under the License is distributed on an "AS IS" BASIS,
11
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12
* See the License for the specific language governing permissions and
13
* limitations under the License.
14
*/
15
16
#ifndef SRC_VNET_TCP_TCP_DEBUG_H_
17
#define SRC_VNET_TCP_TCP_DEBUG_H_
18
19
#include <
vlib/vlib.h
>
20
21
/**
22
* Build debugging infra unconditionally. Debug components controlled via
23
* debug configuration. Comes with some overhead so it's not recommended for
24
* production/performance scenarios. Takes priority over TCP_DEBUG_ENABLE.
25
*/
26
#define TCP_DEBUG_ALWAYS (0)
27
/**
28
* Build debugging infra only if enabled. Debug components controlled via
29
* macros that follow.
30
*/
31
#define TCP_DEBUG_ENABLE (0)
32
33
#define TCP_DEBUG_SM (0)
34
#define TCP_DEBUG_CC (0)
35
#define TCP_DEBUG_CS (0)
36
#define TCP_DEBUG_LC (0 || TCP_DEBUG_SM || TCP_DEBUG_CC || TCP_DEBUG_CS)
37
38
#define TCP_DEBUG (TCP_DEBUG_ALWAYS || TCP_DEBUG_ENABLE)
39
#define TCP_DEBUG_BUF_ALLOC (0)
40
41
#if TCP_DEBUG > 0
42
#define TRANSPORT_DEBUG (1)
43
#endif
44
45
#define TCP_CONCAT_HELPER(_a, _b) _a##_b
46
#define TCP_CC(_a, _b) TCP_CONCAT_HELPER(_a, _b)
47
48
#define tcp_evt_lvl(_evt) TCP_CC(_evt, _LVL)
49
#define tcp_evt_grp(_evt) TCP_CC(_evt, _GRP)
50
#define tcp_evt_handler(_evt, _args...) TCP_CC(_evt, _HANDLER) (_args)
51
#define tcp_evt_grp_dbg_lvl(_evt) tcp_dbg_main.grp_dbg_lvl[tcp_evt_grp (_evt)]
52
53
#define foreach_tcp_evt_grp \
54
_(LC, "life cycle") \
55
_(SM, "state machine") \
56
_(CC, "congestion control") \
57
_(CS, "cc stats") \
58
59
typedef
enum
tcp_evt_grp_
60
{
61
#define _(sym, str) TCP_EVT_GRP_ ## sym,
62
foreach_tcp_evt_grp
63
#undef _
64
TCP_EVT_N_GRP
65
}
tcp_evt_grp_e
;
66
67
typedef
struct
tcp_dbg_main_
68
{
69
u8
grp_dbg_lvl
[
TCP_EVT_N_GRP
];
70
u32
*
free_track_indices
;
71
}
tcp_dbg_main_t
;
72
73
extern
tcp_dbg_main_t
tcp_dbg_main
;
74
75
#define foreach_tcp_dbg_evt \
76
_(INIT, LC, 1, "init") \
77
_(DEALLOC, LC, 1, "dealloc") \
78
_(OPEN, LC, 1, "open") \
79
_(CLOSE, LC, 1, "close") \
80
_(BIND, LC, 1, "bind") \
81
_(UNBIND, LC, 1, "unbind") \
82
_(DELETE, LC, 1, "delete") \
83
_(SYN_RCVD, LC, 1, "SYN rcvd") \
84
_(STATE_CHANGE, LC, 1, "state change") \
85
_(SYN_SENT, SM, 1, "SYN sent") \
86
_(SYN_RXT, SM, 1, "SYN retransmit") \
87
_(SYNACK_SENT, SM, 1, "SYNACK sent") \
88
_(SYNACK_RCVD, SM, 1, "SYNACK rcvd") \
89
_(FIN_SENT, SM, 1, "FIN sent") \
90
_(FIN_RCVD, SM, 1, "FIN rcvd") \
91
_(RST_SENT, SM, 1, "RST sent") \
92
_(RST_RCVD, SM, 1, "RST rcvd") \
93
_(TIMER_POP, SM, 1, "timer pop") \
94
_(SEG_INVALID, SM, 2, "invalid segment") \
95
_(PAWS_FAIL, SM, 2, "failed paws check") \
96
_(ACK_RCV_ERR, SM, 2, "invalid ack") \
97
_(RCV_WND_SHRUNK, SM, 2, "shrunk rcv_wnd") \
98
_(ACK_SENT, SM, 3, "ACK sent") \
99
_(ACK_RCVD, SM, 3, "ACK rcvd") \
100
_(PKTIZE, SM, 3, "packetize") \
101
_(INPUT, SM, 3, "in") \
102
_(OUTPUT, SM, 4, "output") \
103
_(SND_WND, SM, 4, "snd_wnd update") \
104
_(CC_EVT, CC, 1, "cc event") \
105
_(CC_RTX, CC, 2, "retransmit") \
106
_(CC_PACK, CC, 2, "cc partial ack") \
107
_(DUPACK_SENT, CC, 2, "DUPACK sent") \
108
_(DUPACK_RCVD, CC, 2, "DUPACK rcvd") \
109
_(CC_SCOREBOARD, CC, 2, "scoreboard stats") \
110
_(CC_SACKS, CC, 2, "snd sacks stats") \
111
_(CC_INPUT, CC, 2, "ooo data delivered") \
112
_(CC_STAT, CS, 1, "cc stats") \
113
_(CC_RTO_STAT, CS, 1, "cc rto stats") \
114
115
typedef
enum
tcp_evt_types_
116
{
117
#define _(sym, grp, lvl, str) TCP_EVT_##sym,
118
foreach_tcp_dbg_evt
119
#undef _
120
}
tcp_evt_types_e
;
121
122
typedef
enum
tcp_evt_lvl_
123
{
124
#define _(sym, grp, lvl, str) TCP_EVT_## sym ## _LVL = lvl,
125
foreach_tcp_dbg_evt
126
#undef _
127
}
tcp_evt_lvl_e
;
128
129
typedef
enum
tcp_evt_to_grp_
130
{
131
#define _(sym, grp, lvl, str) TCP_EVT_ ## sym ## _GRP = TCP_EVT_GRP_ ## grp,
132
foreach_tcp_dbg_evt
133
#undef _
134
}
tcp_evt_to_grp_e
;
135
136
#if TCP_DEBUG_ALWAYS > 0
137
#define TCP_EVT(_evt, _args...) \
138
if (PREDICT_FALSE (tcp_evt_grp_dbg_lvl (_evt) >= tcp_evt_lvl (_evt))) \
139
tcp_evt_handler (_evt, _args)
140
#define TCP_DBG(_fmt, _args...) clib_warning (_fmt, ##_args)
141
#elif TCP_DEBUG_ENABLE > 0
142
#define TCP_EVT(_evt, _args...) tcp_evt_handler(_evt, _args)
143
#define TCP_DBG(_fmt, _args...) clib_warning (_fmt, ##_args)
144
#else
145
#define TCP_EVT(_evt, _args...)
146
#define TCP_DBG(_fmt, _args...)
147
#endif
148
149
void
tcp_evt_track_register
(
elog_track_t
* et);
150
void
tcp_debug_init
(
void
);
151
152
#define TCP_DECLARE_ETD(_tc, _e, _size) \
153
struct \
154
{ \
155
u32 data[_size]; \
156
} * ed; \
157
ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, _e, \
158
_tc->c_elog_track) \
159
160
/*
161
* Event handlers definitions
162
*/
163
164
#if TCP_DEBUG_LC || TCP_DEBUG_ALWAYS
165
166
/*
167
* Infra and evt track setup
168
*/
169
170
#define TCP_DBG_IP_TAG_LCL(_tc) \
171
{ \
172
if (_tc->c_is_ip4) \
173
{ \
174
ELOG_TYPE_DECLARE (_e) = \
175
{ \
176
.format = "lcl: %d.%d.%d.%d:%d", \
177
.format_args = "i4i4i4i4i4", \
178
}; \
179
TCP_DECLARE_ETD(_tc, _e, 5); \
180
ed->data[0] = _tc->c_lcl_ip.ip4.as_u8[0]; \
181
ed->data[1] = _tc->c_lcl_ip.ip4.as_u8[1]; \
182
ed->data[2] = _tc->c_lcl_ip.ip4.as_u8[2]; \
183
ed->data[3] = _tc->c_lcl_ip.ip4.as_u8[3]; \
184
ed->data[4] = clib_net_to_host_u16(_tc->c_lcl_port); \
185
} \
186
}
187
188
#define TCP_DBG_IP_TAG_RMT(_tc) \
189
{ \
190
if (_tc->c_is_ip4) \
191
{ \
192
ELOG_TYPE_DECLARE (_e) = \
193
{ \
194
.format = "rmt: %d.%d.%d.%d:%d", \
195
.format_args = "i4i4i4i4i4", \
196
}; \
197
TCP_DECLARE_ETD(_tc, _e, 5); \
198
ed->data[0] = _tc->c_rmt_ip.ip4.as_u8[0]; \
199
ed->data[1] = _tc->c_rmt_ip.ip4.as_u8[1]; \
200
ed->data[2] = _tc->c_rmt_ip.ip4.as_u8[2]; \
201
ed->data[3] = _tc->c_rmt_ip.ip4.as_u8[3]; \
202
ed->data[4] = clib_net_to_host_u16(_tc->c_rmt_port); \
203
} \
204
}
205
206
#define TCP_EVT_INIT_HANDLER(_tc, _is_l, ...) \
207
{ \
208
char *_fmt = _is_l ? "l[%d].%d:%d%c" : "[%d].%d:%d->.%d:%d%c"; \
209
if (_tc->c_is_ip4) \
210
{ \
211
_tc->c_elog_track.name = \
212
(char *) format (0, _fmt, _tc->c_thread_index, \
213
_tc->c_lcl_ip.ip4.as_u8[3], \
214
clib_net_to_host_u16(_tc->c_lcl_port), \
215
_tc->c_rmt_ip.ip4.as_u8[3], \
216
clib_net_to_host_u16(_tc->c_rmt_port), 0); \
217
} \
218
else \
219
_tc->c_elog_track.name = \
220
(char *) format (0, _fmt, _tc->c_thread_index, \
221
_tc->c_lcl_ip.ip6.as_u8[15], \
222
clib_net_to_host_u16(_tc->c_lcl_port), \
223
_tc->c_rmt_ip.ip6.as_u8[15], \
224
clib_net_to_host_u16(_tc->c_rmt_port), 0); \
225
tcp_evt_track_register (&_tc->c_elog_track); \
226
TCP_DBG_IP_TAG_LCL(_tc); \
227
TCP_DBG_IP_TAG_RMT(_tc); \
228
}
229
230
#define TCP_EVT_DEALLOC_HANDLER(_tc, ...) \
231
{ \
232
vec_free (_tc->c_elog_track.name); \
233
vec_add1 (tcp_dbg_main.free_track_indices, \
234
_tc->c_elog_track.track_index_plus_one - 1); \
235
}
236
237
#define TCP_EVT_OPEN_HANDLER(_tc, ...) \
238
{ \
239
TCP_EVT_INIT_HANDLER(_tc, 0); \
240
ELOG_TYPE_DECLARE (_e) = \
241
{ \
242
.format = "open: index %d", \
243
.format_args = "i4", \
244
}; \
245
TCP_DECLARE_ETD(_tc, _e, 1); \
246
ed->data[0] = _tc->c_c_index; \
247
}
248
249
#define TCP_EVT_CLOSE_HANDLER(_tc, ...) \
250
{ \
251
ELOG_TYPE_DECLARE (_e) = \
252
{ \
253
.format = "close: cidx %d", \
254
.format_args = "i4", \
255
}; \
256
TCP_DECLARE_ETD(_tc, _e, 1); \
257
ed->data[0] = _tc->c_c_index; \
258
}
259
260
#define TCP_EVT_BIND_HANDLER(_tc, ...) \
261
{ \
262
TCP_EVT_INIT_HANDLER(_tc, 1); \
263
ELOG_TYPE_DECLARE (_e) = \
264
{ \
265
.format = "bind: listener %d", \
266
}; \
267
TCP_DECLARE_ETD(_tc, _e, 1); \
268
ed->data[0] = _tc->c_c_index; \
269
}
270
271
#define TCP_EVT_SYN_RCVD_HANDLER(_tc,_init, ...) \
272
{ \
273
if (_init) \
274
TCP_EVT_INIT_HANDLER(_tc, 0); \
275
ELOG_TYPE_DECLARE (_e) = \
276
{ \
277
.format = "syn-rx: cidx %u sidx %u irs %u", \
278
.format_args = "i4i4i4", \
279
}; \
280
TCP_DECLARE_ETD(_tc, _e, 3); \
281
ed->data[0] = _tc->c_c_index; \
282
ed->data[1] = _tc->c_s_index; \
283
ed->data[2] = _tc->irs; \
284
TCP_EVT_STATE_CHANGE_HANDLER(_tc); \
285
}
286
287
#define TCP_EVT_UNBIND_HANDLER(_tc, ...) \
288
{ \
289
TCP_EVT_DEALLOC_HANDLER(_tc); \
290
ELOG_TYPE_DECLARE (_e) = \
291
{ \
292
.format = "unbind: listener %d", \
293
}; \
294
TCP_DECLARE_ETD(_tc, _e, 1); \
295
ed->data[0] = _tc->c_c_index; \
296
TCP_EVT_DEALLOC_HANDLER(_tc); \
297
}
298
299
#define TCP_EVT_DELETE_HANDLER(_tc, ...) \
300
{ \
301
ELOG_TYPE_DECLARE (_e) = \
302
{ \
303
.format = "delete: cidx %d sidx %d", \
304
.format_args = "i4i4", \
305
}; \
306
TCP_DECLARE_ETD(_tc, _e, 2); \
307
ed->data[0] = _tc->c_c_index; \
308
ed->data[1] = _tc->c_s_index; \
309
TCP_EVT_DEALLOC_HANDLER(_tc); \
310
}
311
312
#endif
313
314
/*
315
* State machine
316
*/
317
#if TCP_DEBUG_SM > 0 || TCP_DEBUG_ALWAYS
318
319
#define TCP_EVT_STATE_CHANGE_HANDLER(_tc, ...) \
320
{ \
321
ELOG_TYPE_DECLARE (_e) = \
322
{ \
323
.format = "state: %s", \
324
.format_args = "t4", \
325
.n_enum_strings = 11, \
326
.enum_strings = { \
327
"closed", \
328
"listen", \
329
"syn-sent", \
330
"syn-rcvd", \
331
"established", \
332
"close_wait", \
333
"fin-wait-1", \
334
"last-ack", \
335
"closing", \
336
"fin-wait-2", \
337
"time-wait", \
338
}, \
339
}; \
340
TCP_DECLARE_ETD(_tc, _e, 1); \
341
ed->data[0] = _tc->state; \
342
}
343
344
#define TCP_EVT_SYN_SENT_HANDLER(_tc, ...) \
345
{ \
346
ELOG_TYPE_DECLARE (_e) = \
347
{ \
348
.format = "syn-tx: iss %u snd_una %u snd_nxt %u", \
349
.format_args = "i4i4i4", \
350
}; \
351
TCP_DECLARE_ETD(_tc, _e, 3); \
352
ed->data[0] = _tc->iss; \
353
ed->data[1] = _tc->snd_una - _tc->iss; \
354
ed->data[2] = _tc->snd_nxt - _tc->iss; \
355
TCP_EVT_STATE_CHANGE_HANDLER(_tc); \
356
}
357
358
#define TCP_EVT_SYNACK_SENT_HANDLER(_tc, ...) \
359
{ \
360
ELOG_TYPE_DECLARE (_e) = \
361
{ \
362
.format = "synack-tx: iss %u irs %u snd_una %u snd_nxt %u rcv_nxt %u",\
363
.format_args = "i4i4i4i4i4", \
364
}; \
365
TCP_DECLARE_ETD(_tc, _e, 5); \
366
ed->data[0] = _tc->iss; \
367
ed->data[1] = _tc->irs; \
368
ed->data[2] = _tc->snd_una - _tc->iss; \
369
ed->data[3] = _tc->snd_nxt - _tc->iss; \
370
ed->data[4] = _tc->rcv_nxt - _tc->irs; \
371
}
372
373
#define TCP_EVT_SYNACK_RCVD_HANDLER(_tc, ...) \
374
{ \
375
ELOG_TYPE_DECLARE (_e) = \
376
{ \
377
.format = "synack-rx: iss %u irs %u snd_una %u snd_nxt %u rcv_nxt %u",\
378
.format_args = "i4i4i4i4i4", \
379
}; \
380
TCP_DECLARE_ETD(_tc, _e, 5); \
381
ed->data[0] = _tc->iss; \
382
ed->data[1] = _tc->irs; \
383
ed->data[2] = _tc->snd_una - _tc->iss; \
384
ed->data[3] = _tc->snd_nxt - _tc->iss; \
385
ed->data[4] = _tc->rcv_nxt - _tc->irs; \
386
TCP_EVT_STATE_CHANGE_HANDLER(_tc); \
387
}
388
389
#define TCP_EVT_FIN_SENT_HANDLER(_tc, ...) \
390
{ \
391
ELOG_TYPE_DECLARE (_e) = \
392
{ \
393
.format = "fin-tx: snd_nxt %d rcv_nxt %d", \
394
.format_args = "i4i4", \
395
}; \
396
TCP_DECLARE_ETD(_tc, _e, 2); \
397
ed->data[0] = _tc->snd_nxt - _tc->iss; \
398
ed->data[1] = _tc->rcv_nxt - _tc->irs; \
399
}
400
401
#define TCP_EVT_RST_SENT_HANDLER(_tc, ...) \
402
{ \
403
if (_tc) \
404
{ \
405
ELOG_TYPE_DECLARE (_e) = \
406
{ \
407
.format = "rst-tx: snd_nxt %d rcv_nxt %d", \
408
.format_args = "i4i4", \
409
}; \
410
TCP_DECLARE_ETD(_tc, _e, 2); \
411
ed->data[0] = _tc->snd_nxt - _tc->iss; \
412
ed->data[1] = _tc->rcv_nxt - _tc->irs; \
413
TCP_EVT_STATE_CHANGE_HANDLER(_tc); \
414
} \
415
}
416
417
#define TCP_EVT_FIN_RCVD_HANDLER(_tc, ...) \
418
{ \
419
ELOG_TYPE_DECLARE (_e) = \
420
{ \
421
.format = "fin-rx: snd_nxt %d rcv_nxt %d", \
422
.format_args = "i4i4", \
423
}; \
424
TCP_DECLARE_ETD(_tc, _e, 2); \
425
ed->data[0] = _tc->snd_nxt - _tc->iss; \
426
ed->data[1] = _tc->rcv_nxt - _tc->irs; \
427
}
428
429
#define TCP_EVT_RST_RCVD_HANDLER(_tc, ...) \
430
{ \
431
ELOG_TYPE_DECLARE (_e) = \
432
{ \
433
.format = "rst-rx: snd_nxt %d rcv_nxt %d", \
434
.format_args = "i4i4", \
435
}; \
436
TCP_DECLARE_ETD(_tc, _e, 2); \
437
ed->data[0] = _tc->snd_nxt - _tc->iss; \
438
ed->data[1] = _tc->rcv_nxt - _tc->irs; \
439
}
440
441
#define TCP_EVT_SYN_RXT_HANDLER(_tc, _type, ...) \
442
{ \
443
ELOG_TYPE_DECLARE (_e) = \
444
{ \
445
.format = "%s-rxt: iss %u irs %u snd_nxt %u rcv_nxt %u", \
446
.format_args = "t4i4i4i4i4", \
447
.n_enum_strings = 2, \
448
.enum_strings = { \
449
"syn", \
450
"synack", \
451
}, \
452
}; \
453
TCP_DECLARE_ETD(_tc, _e, 5); \
454
ed->data[0] = _type; \
455
ed->data[1] = _tc->iss; \
456
ed->data[2] = _tc->irs; \
457
ed->data[3] = _tc->snd_nxt - _tc->iss; \
458
ed->data[4] = _tc->rcv_nxt - _tc->irs; \
459
}
460
461
#define TCP_EVT_TIMER_POP_HANDLER(_tc_index, _timer_id, ...) \
462
{ \
463
tcp_connection_t *_tc; \
464
if (_timer_id == TCP_TIMER_RETRANSMIT_SYN) \
465
{ \
466
_tc = tcp_half_open_connection_get (_tc_index); \
467
} \
468
else \
469
{ \
470
u32 _thread_index = vlib_get_thread_index (); \
471
_tc = tcp_connection_get (_tc_index, _thread_index); \
472
} \
473
ELOG_TYPE_DECLARE (_e) = \
474
{ \
475
.format = "timer-pop: %s cidx %u sidx %u", \
476
.format_args = "t4i4i4", \
477
.n_enum_strings = 8, \
478
.enum_strings = { \
479
"retransmit", \
480
"delack", \
481
"persist", \
482
"keep", \
483
"waitclose", \
484
"retransmit syn", \
485
"establish", \
486
"establish-ao", \
487
}, \
488
}; \
489
if (_tc) \
490
{ \
491
TCP_DECLARE_ETD(_tc, _e, 3); \
492
ed->data[0] = _timer_id; \
493
ed->data[1] = _tc->c_c_index; \
494
ed->data[2] = _tc->c_s_index; \
495
} \
496
else \
497
{ \
498
clib_warning ("pop %d for unexisting connection %d", _timer_id, \
499
_tc_index); \
500
} \
501
}
502
503
#else
504
#define TCP_EVT_SYN_SENT_HANDLER(_tc, ...)
505
#define TCP_EVT_SYNACK_SENT_HANDLER(_tc, ...)
506
#define TCP_EVT_SYNACK_RCVD_HANDLER(_tc, ...)
507
#define TCP_EVT_SYN_RXT_HANDLER(_tc, ...)
508
#define TCP_EVT_FIN_SENT_HANDLER(_tc, ...)
509
#define TCP_EVT_RST_SENT_HANDLER(_tc, ...)
510
#define TCP_EVT_FIN_RCVD_HANDLER(_tc, ...)
511
#define TCP_EVT_RST_RCVD_HANDLER(_tc, ...)
512
#define TCP_EVT_STATE_CHANGE_HANDLER(_tc, ...)
513
#define TCP_EVT_TIMER_POP_HANDLER(_tc_index, _timer_id, ...)
514
#endif
515
516
#if TCP_DEBUG_SM > 1 || TCP_DEBUG_ALWAYS
517
#define TCP_EVT_SEG_INVALID_HANDLER(_tc, _btcp, ...) \
518
{ \
519
ELOG_TYPE_DECLARE (_e) = \
520
{ \
521
.format = "seg-inv: seq %u end %u rcv_las %u rcv_nxt %u rcv_wnd %u",\
522
.format_args = "i4i4i4i4i4", \
523
}; \
524
TCP_DECLARE_ETD(_tc, _e, 5); \
525
ed->data[0] = _btcp.seq_number - _tc->irs; \
526
ed->data[1] = _btcp.seq_end - _tc->irs; \
527
ed->data[2] = _tc->rcv_las - _tc->irs; \
528
ed->data[3] = _tc->rcv_nxt - _tc->irs; \
529
ed->data[4] = _tc->rcv_wnd; \
530
}
531
532
#define TCP_EVT_PAWS_FAIL_HANDLER(_tc, _seq, _end, ...) \
533
{ \
534
ELOG_TYPE_DECLARE (_e) = \
535
{ \
536
.format = "paws-err: seq %u end %u tsval %u tsval_recent %u", \
537
.format_args = "i4i4i4i4", \
538
}; \
539
TCP_DECLARE_ETD(_tc, _e, 4); \
540
ed->data[0] = _seq - _tc->irs; \
541
ed->data[1] = _end - _tc->irs; \
542
ed->data[2] = _tc->rcv_opts.tsval; \
543
ed->data[3] = _tc->tsval_recent; \
544
}
545
546
#define TCP_EVT_ACK_RCV_ERR_HANDLER(_tc, _type, _ack, ...) \
547
{ \
548
ELOG_TYPE_DECLARE (_e) = \
549
{ \
550
.format = "ack-err: %s ack %u snd_una %u snd_nxt %u", \
551
.format_args = "t4i4i4i4", \
552
.n_enum_strings = 3, \
553
.enum_strings = { \
554
"invalid", \
555
"old", \
556
"future", \
557
}, \
558
}; \
559
TCP_DECLARE_ETD(_tc, _e, 4); \
560
ed->data[0] = _type; \
561
ed->data[1] = _ack - _tc->iss; \
562
ed->data[2] = _tc->snd_una - _tc->iss; \
563
ed->data[3] = _tc->snd_nxt - _tc->iss; \
564
}
565
566
#define TCP_EVT_RCV_WND_SHRUNK_HANDLER(_tc, _obs, _av, ...) \
567
{ \
568
if (_av > 0) \
569
{ \
570
ELOG_TYPE_DECLARE (_e) = \
571
{ \
572
.format = "huh?: rcv_wnd %u obsd %u av %u rcv_nxt %u rcv_las %u", \
573
.format_args = "i4i4i4i4i4", \
574
}; \
575
TCP_DECLARE_ETD(_tc, _e, 5); \
576
ed->data[0] = _tc->rcv_wnd; \
577
ed->data[1] = _obs; \
578
ed->data[2] = _av; \
579
ed->data[3] = _tc->rcv_nxt - _tc->irs; \
580
ed->data[4] = _tc->rcv_las - _tc->irs; \
581
} \
582
}
583
#else
584
#define TCP_EVT_SEG_INVALID_HANDLER(_tc, _btcp, ...)
585
#define TCP_EVT_PAWS_FAIL_HANDLER(_tc, _seq, _end, ...)
586
#define TCP_EVT_ACK_RCV_ERR_HANDLER(_tc, _type, _ack, ...)
587
#define TCP_EVT_RCV_WND_SHRUNK_HANDLER(_tc, _obs, _av, ...)
588
#endif
589
590
#if TCP_DEBUG_SM > 2 || TCP_DEBUG_ALWAYS
591
592
#define TCP_EVT_ACK_SENT_HANDLER(_tc, ...) \
593
{ \
594
ELOG_TYPE_DECLARE (_e) = \
595
{ \
596
.format = "ack-tx: acked %u rcv_nxt %u rcv_wnd %u snd_nxt %u snd_wnd %u",\
597
.format_args = "i4i4i4i4i4", \
598
}; \
599
TCP_DECLARE_ETD(_tc, _e, 5); \
600
ed->data[0] = _tc->rcv_nxt - _tc->rcv_las; \
601
ed->data[1] = _tc->rcv_nxt - _tc->irs; \
602
ed->data[2] = _tc->rcv_wnd; \
603
ed->data[3] = _tc->snd_nxt - _tc->iss; \
604
ed->data[4] = _tc->snd_wnd; \
605
}
606
607
#define TCP_EVT_ACK_RCVD_HANDLER(_tc, ...) \
608
{ \
609
ELOG_TYPE_DECLARE (_e) = \
610
{ \
611
.format = "ack-rx: %u snd_una %u snd_wnd %u cwnd %u inflight %u", \
612
.format_args = "i4i4i4i4i4", \
613
}; \
614
TCP_DECLARE_ETD(_tc, _e, 5); \
615
ed->data[0] = _tc->bytes_acked; \
616
ed->data[1] = _tc->snd_una - _tc->iss; \
617
ed->data[2] = _tc->snd_wnd; \
618
ed->data[3] = _tc->cwnd; \
619
ed->data[4] = tcp_flight_size(_tc); \
620
}
621
622
#define TCP_EVT_PKTIZE_HANDLER(_tc, ...) \
623
{ \
624
ELOG_TYPE_DECLARE (_e) = \
625
{ \
626
.format = "tx: una %u snd_nxt %u space %u flight %u rcv_wnd %u",\
627
.format_args = "i4i4i4i4i4", \
628
}; \
629
TCP_DECLARE_ETD(_tc, _e, 5); \
630
ed->data[0] = _tc->snd_una - _tc->iss; \
631
ed->data[1] = _tc->snd_nxt - _tc->iss; \
632
ed->data[2] = tcp_available_output_snd_space (_tc); \
633
ed->data[3] = tcp_flight_size (_tc); \
634
ed->data[4] = _tc->rcv_wnd; \
635
}
636
637
#define TCP_EVT_INPUT_HANDLER(_tc, _type, _len, _written, ...) \
638
{ \
639
ELOG_TYPE_DECLARE (_e) = \
640
{ \
641
.format = "in: %s len %u written %d rcv_nxt %u rcv_wnd(o) %d", \
642
.format_args = "t4i4i4i4i4", \
643
.n_enum_strings = 2, \
644
.enum_strings = { \
645
"order", \
646
"ooo", \
647
}, \
648
}; \
649
TCP_DECLARE_ETD(_tc, _e, 5); \
650
ed->data[0] = _type; \
651
ed->data[1] = _len; \
652
ed->data[2] = _written; \
653
ed->data[3] = (_tc->rcv_nxt - _tc->irs) + _written; \
654
ed->data[4] = _tc->rcv_wnd - (_tc->rcv_nxt - _tc->rcv_las); \
655
}
656
657
#else
658
#define TCP_EVT_ACK_SENT_HANDLER(_tc, ...)
659
#define TCP_EVT_ACK_RCVD_HANDLER(_tc, ...)
660
#define TCP_EVT_PKTIZE_HANDLER(_tc, ...)
661
#define TCP_EVT_INPUT_HANDLER(_tc, _type, _len, _written, ...)
662
#endif
663
664
/*
665
* State machine verbose
666
*/
667
#if TCP_DEBUG_SM > 3 || TCP_DEBUG_ALWAYS
668
#define TCP_EVT_SND_WND_HANDLER(_tc, ...) \
669
{ \
670
ELOG_TYPE_DECLARE (_e) = \
671
{ \
672
.format = "snd-wnd update: %u ", \
673
.format_args = "i4", \
674
}; \
675
TCP_DECLARE_ETD(_tc, _e, 1); \
676
ed->data[0] = _tc->snd_wnd; \
677
}
678
679
#define TCP_EVT_OUTPUT_HANDLER(_tc, flags, n_bytes,...) \
680
{ \
681
ELOG_TYPE_DECLARE (_e) = \
682
{ \
683
.format = "out: flags %x, bytes %u", \
684
.format_args = "i4i4", \
685
}; \
686
TCP_DECLARE_ETD(_tc, _e, 2); \
687
ed->data[0] = flags; \
688
ed->data[1] = n_bytes; \
689
}
690
#else
691
#define TCP_EVT_SND_WND_HANDLER(_tc, ...)
692
#define TCP_EVT_OUTPUT_HANDLER(_tc, flags, n_bytes,...)
693
#endif
694
695
/*
696
* Congestion Control
697
*/
698
699
#if TCP_DEBUG_CC || TCP_DEBUG_ALWAYS
700
701
#define TCP_EVT_CC_EVT_PRINT(_tc, _sub_evt) \
702
{ \
703
ELOG_TYPE_DECLARE (_e) = \
704
{ \
705
.format = "cc: %s snd_space %u snd_una %u out %u flight %u", \
706
.format_args = "t4i4i4i4i4", \
707
.n_enum_strings = 7, \
708
.enum_strings = { \
709
"fast-rxt", \
710
"first-rxt", \
711
"rxt-timeout", \
712
"recovered", \
713
"congestion", \
714
"undo", \
715
"recovery", \
716
}, \
717
}; \
718
TCP_DECLARE_ETD(_tc, _e, 5); \
719
ed->data[0] = _sub_evt; \
720
ed->data[1] = tcp_available_cc_snd_space (_tc); \
721
ed->data[2] = _tc->snd_una - _tc->iss; \
722
ed->data[3] = tcp_bytes_out(_tc); \
723
ed->data[4] = tcp_flight_size (_tc); \
724
}
725
726
#define TCP_EVT_CC_EVT_HANDLER(_tc, _sub_evt, ...) \
727
{ \
728
if (_tc->snd_una != _tc->iss) \
729
TCP_EVT_CC_STAT_PRINT (_tc); \
730
if ((_sub_evt <= 1 && TCP_DEBUG_CC > 1) \
731
|| (_sub_evt > 1 && TCP_DEBUG_CC > 0)) \
732
TCP_EVT_CC_EVT_PRINT (_tc, _sub_evt); \
733
}
734
#else
735
#define TCP_EVT_CC_EVT_HANDLER(_tc, _sub_evt, ...) \
736
737
#endif
738
739
#if TCP_DEBUG_CC > 1 || TCP_DEBUG_ALWAYS
740
#define TCP_EVT_CC_RTX_HANDLER(_tc, offset, n_bytes, ...) \
741
{ \
742
ELOG_TYPE_DECLARE (_e) = \
743
{ \
744
.format = "rxt: snd_nxt %u offset %u snd %u rxt %u", \
745
.format_args = "i4i4i4i4", \
746
}; \
747
TCP_DECLARE_ETD(_tc, _e, 4); \
748
ed->data[0] = _tc->snd_nxt - _tc->iss; \
749
ed->data[1] = offset; \
750
ed->data[2] = n_bytes; \
751
ed->data[3] = _tc->snd_rxt_bytes; \
752
}
753
754
#define TCP_EVT_DUPACK_SENT_HANDLER(_tc, _btcp, ...) \
755
{ \
756
ELOG_TYPE_DECLARE (_e) = \
757
{ \
758
.format = "dack-tx: rcv_nxt %u seq %u rcv_wnd %u snd_nxt %u av_wnd %u",\
759
.format_args = "i4i4i4i4i4", \
760
}; \
761
TCP_DECLARE_ETD(_tc, _e, 5); \
762
ed->data[0] = _tc->rcv_nxt - _tc->irs; \
763
ed->data[1] = _btcp.seq_number - _tc->irs; \
764
ed->data[2] = _tc->rcv_wnd; \
765
ed->data[3] = _tc->snd_nxt - _tc->iss; \
766
ed->data[4] = tcp_available_snd_wnd(_tc); \
767
}
768
769
#define TCP_EVT_DUPACK_RCVD_HANDLER(_tc, ...) \
770
{ \
771
ELOG_TYPE_DECLARE (_e) = \
772
{ \
773
.format = "dack-rx: snd_una %u cwnd %u snd_wnd %u flight %u rcv_wnd %u",\
774
.format_args = "i4i4i4i4i4", \
775
}; \
776
TCP_DECLARE_ETD(_tc, _e, 5); \
777
ed->data[0] = _tc->snd_una - _tc->iss; \
778
ed->data[1] = _tc->cwnd; \
779
ed->data[2] = _tc->snd_wnd; \
780
ed->data[3] = tcp_flight_size(_tc); \
781
ed->data[4] = _tc->rcv_wnd; \
782
}
783
784
#define TCP_EVT_CC_PACK_HANDLER(_tc, ...) \
785
{ \
786
ELOG_TYPE_DECLARE (_e) = \
787
{ \
788
.format = "pack: snd_una %u snd_nxt %u", \
789
.format_args = "i4i4", \
790
}; \
791
TCP_DECLARE_ETD(_tc, _e, 2); \
792
ed->data[0] = _tc->snd_una - _tc->iss; \
793
ed->data[1] = _tc->snd_nxt - _tc->iss; \
794
}
795
#define TCP_EVT_CC_SCOREBOARD_HANDLER(_tc, ...) \
796
{ \
797
if (TCP_DEBUG_CC > 1 && _tc->sack_sb.last_sacked_bytes) \
798
{ \
799
ELOG_TYPE_DECLARE (_e) = \
800
{ \
801
.format = "sb1: holes %u lost %u sacked %u high %u highrxt %u", \
802
.format_args = "i4i4i4i4i4", \
803
}; \
804
TCP_DECLARE_ETD(_tc, _e, 5); \
805
ed->data[0] = pool_elts(_tc->sack_sb.holes); \
806
ed->data[1] = _tc->sack_sb.lost_bytes; \
807
ed->data[2] = _tc->sack_sb.sacked_bytes; \
808
ed->data[3] = _tc->sack_sb.high_sacked - _tc->iss; \
809
ed->data[4] = _tc->sack_sb.high_rxt - _tc->iss; \
810
} \
811
if (TCP_DEBUG_CC > 1 && _tc->sack_sb.last_sacked_bytes) \
812
{ \
813
sack_scoreboard_hole_t *hole; \
814
hole = scoreboard_first_hole (&_tc->sack_sb); \
815
ELOG_TYPE_DECLARE (_e) = \
816
{ \
817
.format = "sb2: first start: %u end %u last start %u end %u", \
818
.format_args = "i4i4i4i4", \
819
}; \
820
TCP_DECLARE_ETD(_tc, _e, 4); \
821
ed->data[0] = hole ? hole->start - _tc->iss : 0; \
822
ed->data[1] = hole ? hole->end - _tc->iss : 0; \
823
hole = scoreboard_last_hole (&_tc->sack_sb); \
824
ed->data[2] = hole ? hole->start - _tc->iss : 0; \
825
ed->data[3] = hole ? hole->end - _tc->iss : 0; \
826
} \
827
}
828
#define TCP_EVT_CC_SACKS_HANDLER(_tc, ...) \
829
{ \
830
if (TCP_DEBUG_CC > 1) \
831
{ \
832
ELOG_TYPE_DECLARE (_e) = \
833
{ \
834
.format = "sacks: blocks %u bytes %u", \
835
.format_args = "i4i4", \
836
}; \
837
TCP_DECLARE_ETD(_tc, _e, 2); \
838
ed->data[0] = vec_len (_tc->snd_sacks); \
839
ed->data[1] = tcp_sack_list_bytes (_tc); \
840
} \
841
}
842
#define TCP_EVT_CC_INPUT_HANDLER(_tc, _len, _written, ...) \
843
{ \
844
ELOG_TYPE_DECLARE (_e) = \
845
{ \
846
.format = "cc input: len %u written %d rcv_nxt %u rcv_wnd(o) %d", \
847
.format_args = "i4i4i4i4", \
848
}; \
849
TCP_DECLARE_ETD(_tc, _e, 4); \
850
ed->data[0] = _len; \
851
ed->data[1] = _written; \
852
ed->data[2] = _tc->rcv_nxt - _tc->irs; \
853
ed->data[3] = _tc->rcv_wnd - (_tc->rcv_nxt - _tc->rcv_las); \
854
}
855
#else
856
#define TCP_EVT_CC_RTX_HANDLER(_tc, offset, n_bytes, ...)
857
#define TCP_EVT_DUPACK_SENT_HANDLER(_tc, _btcp, ...)
858
#define TCP_EVT_DUPACK_RCVD_HANDLER(_tc, ...)
859
#define TCP_EVT_CC_PACK_HANDLER(_tc, ...)
860
#define TCP_EVT_CC_SCOREBOARD_HANDLER(_tc, ...)
861
#define TCP_EVT_CC_SACKS_HANDLER(_tc, ...)
862
#define TCP_EVT_CC_INPUT_HANDLER(_tc, _len, _written, ...)
863
#endif
864
865
/*
866
* Congestion control stats
867
*/
868
#if TCP_DEBUG_CS || TCP_DEBUG_ALWAYS
869
870
#define STATS_INTERVAL 1
871
872
#define tcp_cc_time_to_print_stats(_tc) \
873
_tc->c_cc_stat_tstamp + STATS_INTERVAL < tcp_time_now() \
874
|| tcp_in_fastrecovery (_tc) \
875
876
#define TCP_EVT_CC_RTO_STAT_PRINT(_tc) \
877
{ \
878
ELOG_TYPE_DECLARE (_e) = \
879
{ \
880
.format = "rcv_stat: rto %u srtt %u mrtt-us %u rttvar %u", \
881
.format_args = "i4i4i4i4", \
882
}; \
883
TCP_DECLARE_ETD(_tc, _e, 4); \
884
ed->data[0] = _tc->rto; \
885
ed->data[1] = _tc->srtt; \
886
ed->data[2] = (u32) (_tc->mrtt_us * 1e6); \
887
ed->data[3] = _tc->rttvar; \
888
}
889
890
#define TCP_EVT_CC_RTO_STAT_HANDLER(_tc, ...) \
891
{ \
892
if (tcp_cc_time_to_print_stats (_tc)) \
893
{ \
894
TCP_EVT_CC_RTO_STAT_PRINT (_tc); \
895
_tc->c_cc_stat_tstamp = tcp_time_now (); \
896
} \
897
}
898
899
#define TCP_EVT_CC_SND_STAT_PRINT(_tc) \
900
{ \
901
ELOG_TYPE_DECLARE (_e) = \
902
{ \
903
.format = "snd_stat: cc_space %u sacked %u lost %u out %u rxt %u", \
904
.format_args = "i4i4i4i4i4", \
905
}; \
906
TCP_DECLARE_ETD(_tc, _e, 5); \
907
ed->data[0] = tcp_available_cc_snd_space (_tc); \
908
ed->data[1] = _tc->sack_sb.sacked_bytes; \
909
ed->data[2] = _tc->sack_sb.lost_bytes; \
910
ed->data[3] = tcp_bytes_out (_tc); \
911
ed->data[3] = _tc->snd_rxt_bytes; \
912
}
913
914
#define TCP_EVT_CC_SND_STAT_HANDLER(_tc, ...) \
915
{ \
916
if (tcp_cc_time_to_print_stats (_tc)) \
917
{ \
918
TCP_EVT_CC_SND_STAT_PRINT(_tc); \
919
_tc->c_cc_stat_tstamp = tcp_time_now (); \
920
} \
921
}
922
923
#define TCP_EVT_CC_STAT_PRINT(_tc) \
924
{ \
925
ELOG_TYPE_DECLARE (_e) = \
926
{ \
927
.format = "cc_stat: cwnd %u flight %u space %u ssthresh %u snd_wnd %u",\
928
.format_args = "i4i4i4i4i4", \
929
}; \
930
TCP_DECLARE_ETD(_tc, _e, 5); \
931
ed->data[0] = _tc->cwnd; \
932
ed->data[1] = tcp_flight_size (_tc); \
933
ed->data[2] = tcp_snd_space (_tc); \
934
ed->data[3] = _tc->ssthresh; \
935
ed->data[4] = _tc->snd_wnd; \
936
TCP_EVT_CC_RTO_STAT_PRINT (_tc); \
937
TCP_EVT_CC_SND_STAT_PRINT (_tc); \
938
}
939
940
#define TCP_EVT_CC_STAT_HANDLER(_tc, ...) \
941
{ \
942
if (tcp_cc_time_to_print_stats (_tc)) \
943
{ \
944
TCP_EVT_CC_STAT_PRINT (_tc); \
945
_tc->c_cc_stat_tstamp = tcp_time_now(); \
946
} \
947
}
948
#else
949
#define TCP_EVT_CC_STAT_HANDLER(_tc, ...)
950
#define TCP_EVT_CC_STAT_PRINT(_tc)
951
#endif
952
953
/*
954
* Buffer allocation
955
*/
956
#if TCP_DEBUG_BUF_ALLOC
957
958
#define TCP_DBG_BUFFER_ALLOC_MAYBE_FAIL(thread_index) \
959
{ \
960
static u32 *buffer_fail_counters; \
961
if (PREDICT_FALSE (buffer_fail_counters == 0)) \
962
{ \
963
u32 num_threads; \
964
vlib_thread_main_t *vtm = vlib_get_thread_main (); \
965
num_threads = 1
/* main thread */
+ vtm->n_threads; \
966
vec_validate (buffer_fail_counters, num_threads - 1); \
967
} \
968
if (PREDICT_FALSE (tcp_cfg.buffer_fail_fraction != 0.0)) \
969
{ \
970
if (PREDICT_TRUE (buffer_fail_counters[thread_index] > 0)) \
971
{ \
972
if ((1.0 / (f32) (buffer_fail_counters[thread_index])) \
973
< tcp_cfg.buffer_fail_fraction) \
974
{ \
975
buffer_fail_counters[thread_index] = 0.0000001; \
976
return -1; \
977
} \
978
} \
979
buffer_fail_counters[thread_index] ++; \
980
} \
981
}
982
#else
983
#define TCP_DBG_BUFFER_ALLOC_MAYBE_FAIL(thread_index)
984
#endif
985
986
#endif
/* SRC_VNET_TCP_TCP_DEBUG_H_ */
987
/*
988
* fd.io coding-style-patch-verification: ON
989
*
990
* Local Variables:
991
* eval: (c-set-style "gnu")
992
* End:
993
*/
TCP_EVT_N_GRP
@ TCP_EVT_N_GRP
Definition:
tcp_debug.h:64
vlib.h
tcp_debug_init
void tcp_debug_init(void)
tcp_dbg_main_::free_track_indices
u32 * free_track_indices
Definition:
tcp_debug.h:70
tcp_evt_lvl_
tcp_evt_lvl_
Definition:
tcp_debug.h:122
tcp_dbg_main_
Definition:
tcp_debug.h:67
tcp_evt_to_grp_
tcp_evt_to_grp_
Definition:
tcp_debug.h:129
tcp_evt_grp_
tcp_evt_grp_
Definition:
tcp_debug.h:59
tcp_dbg_main_::grp_dbg_lvl
u8 grp_dbg_lvl[TCP_EVT_N_GRP]
Definition:
tcp_debug.h:69
tcp_evt_types_e
enum tcp_evt_types_ tcp_evt_types_e
tcp_evt_lvl_e
enum tcp_evt_lvl_ tcp_evt_lvl_e
foreach_tcp_evt_grp
#define foreach_tcp_evt_grp
Definition:
tcp_debug.h:53
tcp_evt_to_grp_e
enum tcp_evt_to_grp_ tcp_evt_to_grp_e
foreach_tcp_dbg_evt
#define foreach_tcp_dbg_evt
Definition:
tcp_debug.h:75
elog_track_t
Definition:
elog.h:113
u32
unsigned int u32
Definition:
types.h:88
tcp_dbg_main_t
struct tcp_dbg_main_ tcp_dbg_main_t
u8
unsigned char u8
Definition:
types.h:56
tcp_evt_grp_e
enum tcp_evt_grp_ tcp_evt_grp_e
tcp_evt_track_register
void tcp_evt_track_register(elog_track_t *et)
Definition:
tcp_debug.c:20
tcp_evt_types_
tcp_evt_types_
Definition:
tcp_debug.h:115
tcp_dbg_main
tcp_dbg_main_t tcp_dbg_main
Definition:
tcp_debug.c:17
src
vnet
tcp
tcp_debug.h
Generated on Sat Jan 8 2022 10:37:00 for FD.io VPP by
1.8.17
1.8.17