2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 2016-2020 Netflix, Inc.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #ifndef __tcp_log_buf_h__
31 #define __tcp_log_buf_h__
33 #define TCP_LOG_REASON_LEN 32
34 #define TCP_LOG_TAG_LEN 32
35 #define TCP_LOG_BUF_VER (9)
38 * Because the (struct tcp_log_buffer) includes 8-byte uint64_t's, it requires
39 * 8-byte alignment to work properly on all platforms. Therefore, we will
40 * enforce 8-byte alignment for all the structures that may appear by
41 * themselves (instead of being embedded in another structure) in a data
44 #define ALIGN_TCP_LOG __aligned(8)
46 /* Information about the socketbuffer state. */
47 struct tcp_log_sockbuf
49 uint32_t tls_sb_acc; /* available chars (sb->sb_acc) */
50 uint32_t tls_sb_ccc; /* claimed chars (sb->sb_ccc) */
51 uint32_t tls_sb_spare; /* spare */
54 /* Optional, verbose information that may be appended to an event log. */
55 struct tcp_log_verbose
57 #define TCP_FUNC_LEN 32
58 char tlv_snd_frm[TCP_FUNC_LEN]; /* tcp_output() caller */
59 char tlv_trace_func[TCP_FUNC_LEN]; /* Function that
61 uint32_t tlv_trace_line; /* Line number that generated trace */
65 /* Internal RACK state variables. */
68 uint32_t tlr_rack_rtt; /* rc_rack_rtt */
69 uint8_t tlr_state; /* Internal RACK state */
70 uint8_t _pad[3]; /* Padding */
74 uint64_t cur_del_rate;
104 /* shadows tcp_log_bbr struct element sizes */
106 uint64_t u64_flex[4];
107 uint32_t u32_flex[14];
108 uint16_t u16_flex[3];
110 uint32_t u32_flex2[1];
113 struct tcp_log_uint64 {
114 uint64_t u64_flex[13];
117 struct tcp_log_sendfile {
124 * tcp_log_stackspecific is currently being used as "event specific" log
125 * info by all stacks (i.e. struct tcp_log_bbr is used for generic event
126 * logging). Until this is cleaned up more generically and throughout,
127 * allow events to use the same space in the union.
129 union tcp_log_stackspecific
131 struct tcp_log_rack u_rack;
132 struct tcp_log_bbr u_bbr;
133 struct tcp_log_sendfile u_sf;
134 struct tcp_log_raw u_raw; /* "raw" log access */
135 struct tcp_log_uint64 u64_raw; /* just u64's - used by process info */
138 typedef union tcp_log_stackspecific tcp_log_eventspecific_t;
140 struct tcp_log_buffer
143 struct timeval tlb_tv; /* Timestamp of trace */
144 uint32_t tlb_ticks; /* Timestamp of trace */
145 uint32_t tlb_sn; /* Serial number */
146 uint8_t tlb_stackid; /* Stack ID */
147 uint8_t tlb_eventid; /* Event ID */
148 uint16_t tlb_eventflags; /* Flags for the record */
149 #define TLB_FLAG_RXBUF 0x0001 /* Includes receive buffer info */
150 #define TLB_FLAG_TXBUF 0x0002 /* Includes send buffer info */
151 #define TLB_FLAG_HDR 0x0004 /* Includes a TCP header */
152 #define TLB_FLAG_VERBOSE 0x0008 /* Includes function/line numbers */
153 #define TLB_FLAG_STACKINFO 0x0010 /* Includes stack-specific info */
154 int tlb_errno; /* Event error (if any) */
156 /* Internal session state */
157 struct tcp_log_sockbuf tlb_rxbuf; /* Receive buffer */
158 struct tcp_log_sockbuf tlb_txbuf; /* Send buffer */
160 int tlb_state; /* TCPCB t_state */
161 uint32_t tlb_starttime; /* TCPCB t_starttime */
162 uint32_t tlb_iss; /* TCPCB iss */
163 uint32_t tlb_flags; /* TCPCB flags */
164 uint32_t tlb_snd_una; /* TCPCB snd_una */
165 uint32_t tlb_snd_max; /* TCPCB snd_max */
166 uint32_t tlb_snd_cwnd; /* TCPCB snd_cwnd */
167 uint32_t tlb_snd_nxt; /* TCPCB snd_nxt */
168 uint32_t tlb_snd_recover;/* TCPCB snd_recover */
169 uint32_t tlb_snd_wnd; /* TCPCB snd_wnd */
170 uint32_t tlb_snd_ssthresh; /* TCPCB snd_ssthresh */
171 uint32_t tlb_srtt; /* TCPCB t_srtt */
172 uint32_t tlb_rttvar; /* TCPCB t_rttvar */
173 uint32_t tlb_rcv_up; /* TCPCB rcv_up */
174 uint32_t tlb_rcv_adv; /* TCPCB rcv_adv */
175 uint32_t tlb_flags2; /* TCPCB t_flags2 */
176 uint32_t tlb_rcv_nxt; /* TCPCB rcv_nxt */
177 uint32_t tlb_rcv_wnd; /* TCPCB rcv_wnd */
178 uint32_t tlb_dupacks; /* TCPCB t_dupacks */
179 int tlb_segqlen; /* TCPCB segqlen */
180 int tlb_snd_numholes; /* TCPCB snd_numholes */
181 uint32_t tlb_flex1; /* Event specific information */
182 uint32_t tlb_flex2; /* Event specific information */
183 uint32_t tlb_fbyte_in; /* TCPCB first byte in time */
184 uint32_t tlb_fbyte_out; /* TCPCB first byte out time */
185 uint8_t tlb_snd_scale:4, /* TCPCB snd_scale */
186 tlb_rcv_scale:4; /* TCPCB rcv_scale */
187 uint8_t _pad[3]; /* Padding */
189 union tcp_log_stackspecific tlb_stackinfo;
190 #define tlb_rack tlb_stackinfo.u_rack
193 uint32_t tlb_len; /* The packet's data length */
194 struct tcphdr tlb_th; /* The TCP header */
195 uint8_t tlb_opts[TCP_MAXOLEN]; /* The TCP options */
197 /* Verbose information (optional) */
198 struct tcp_log_verbose tlb_verbose[0];
201 enum tcp_log_events {
202 TCP_LOG_IN = 1, /* Incoming packet 1 */
203 TCP_LOG_OUT, /* Transmit (without other event) 2 */
204 TCP_LOG_RTO, /* Retransmit timeout 3 */
205 TCP_LOG_SB_WAKE, /* Awaken socket buffer 4 */
206 TCP_LOG_BAD_RETRAN, /* Detected bad retransmission 5 */
207 TCP_LOG_PRR, /* Doing PRR 6 */
208 TCP_LOG_REORDER, /* Detected reorder 7 */
209 TCP_LOG_HPTS, /* Hpts sending a packet 8 */
210 BBR_LOG_BBRUPD, /* We updated BBR info 9 */
211 BBR_LOG_BBRSND, /* We did a slot calculation and sending is done 10 */
212 BBR_LOG_ACKCLEAR, /* A ack clears all outstanding 11 */
213 BBR_LOG_INQUEUE, /* The tcb had a packet input to it 12 */
214 BBR_LOG_TIMERSTAR, /* Start a timer 13 */
215 BBR_LOG_TIMERCANC, /* Cancel a timer 14 */
216 BBR_LOG_ENTREC, /* Entered recovery 15 */
217 BBR_LOG_EXITREC, /* Exited recovery 16 */
218 BBR_LOG_CWND, /* Cwnd change 17 */
219 BBR_LOG_BWSAMP, /* LT B/W sample has been made 18 */
220 BBR_LOG_MSGSIZE, /* We received a EMSGSIZE error 19 */
221 BBR_LOG_BBRRTT, /* BBR RTT is updated 20 */
222 BBR_LOG_JUSTRET, /* We just returned out of output 21 */
223 BBR_LOG_STATE, /* A BBR state change occurred 22 */
224 BBR_LOG_PKT_EPOCH, /* A BBR packet epoch occurred 23 */
225 BBR_LOG_PERSIST, /* BBR changed to/from a persists 24 */
226 TCP_LOG_FLOWEND, /* End of a flow 25 */
227 BBR_LOG_RTO, /* BBR's timeout includes BBR info 26 */
228 BBR_LOG_DOSEG_DONE, /* hpts do_segment completes 27 */
229 BBR_LOG_EXIT_GAIN, /* hpts do_segment completes 28 */
230 BBR_LOG_THRESH_CALC, /* Doing threshold calculation 29 */
231 TCP_LOG_MAPCHG, /* Map Changes to the sendmap 30 */
232 TCP_LOG_USERSEND, /* User level sends data 31 */
233 BBR_RSM_CLEARED, /* RSM cleared of ACK flags 32 */
234 BBR_LOG_STATE_TARGET, /* Log of target at state 33 */
235 BBR_LOG_TIME_EPOCH, /* A timed based Epoch occurred 34 */
236 BBR_LOG_TO_PROCESS, /* A to was processed 35 */
237 BBR_LOG_BBRTSO, /* TSO update 36 */
238 BBR_LOG_HPTSDIAG, /* Hpts diag insert 37 */
239 BBR_LOG_LOWGAIN, /* Low gain accounting 38 */
240 BBR_LOG_PROGRESS, /* Progress timer event 39 */
241 TCP_LOG_SOCKET_OPT, /* A socket option is set 40 */
242 BBR_LOG_TIMERPREP, /* A BBR var to debug out TLP issues 41 */
243 BBR_LOG_ENOBUF_JMP, /* We had a enobuf jump 42 */
244 BBR_LOG_HPTSI_CALC, /* calc the hptsi time 43 */
245 BBR_LOG_RTT_SHRINKS, /* We had a log reduction of rttProp 44 */
246 BBR_LOG_BW_RED_EV, /* B/W reduction events 45 */
247 BBR_LOG_REDUCE, /* old bbr log reduce for 4.1 and earlier 46*/
248 TCP_LOG_RTT, /* A rtt (in useconds) is being sampled and applied to the srtt algo 47 */
249 BBR_LOG_SETTINGS_CHG, /* Settings changed for loss response 48 */
250 BBR_LOG_SRTT_GAIN_EVENT, /* SRTT gaining -- now not used 49 */
251 TCP_LOG_REASS, /* Reassembly buffer logging 50 */
252 TCP_HDWR_PACE_SIZE, /* TCP pacing size set (rl and rack uses this) 51 */
253 BBR_LOG_HDWR_PACE, /* TCP Hardware pacing log 52 */
254 BBR_LOG_TSTMP_VAL, /* Temp debug timestamp validation 53 */
255 TCP_LOG_CONNEND, /* End of connection 54 */
256 TCP_LOG_LRO, /* LRO entry 55 */
257 TCP_SACK_FILTER_RES, /* Results of SACK Filter 56 */
258 TCP_SAD_DETECT, /* Sack Attack Detection 57 */
259 TCP_TIMELY_WORK, /* Logs regarding Timely CC tweaks 58 */
260 TCP_LOG_USER_EVENT, /* User space event data 59 */
261 TCP_LOG_SENDFILE, /* sendfile() logging for TCP connections 60 */
262 TCP_LOG_REQ_T, /* logging of request tracking 61 */
263 TCP_LOG_ACCOUNTING, /* Log of TCP Accounting data 62 */
264 TCP_LOG_FSB, /* FSB information 63 */
265 RACK_DSACK_HANDLING, /* Handling of DSACK in rack for reordering window 64 */
266 TCP_HYSTART, /* TCP Hystart logging 65 */
267 TCP_CHG_QUERY, /* Change query during fnc_init() 66 */
268 TCP_RACK_LOG_COLLAPSE, /* Window collapse by peer 67 */
269 TCP_RACK_TP_TRIGGERED, /* A rack tracepoint is triggered 68 */
270 TCP_HYBRID_PACING_LOG, /* Hybrid pacing log 69 */
271 TCP_LOG_PRU, /* TCP protocol user request 70 */
272 TCP_LOG_END /* End (keep at end) 71 */
275 enum tcp_log_states {
276 TCP_LOG_STATE_RATIO_OFF = -2, /* Log ratio evaluation yielded an OFF
277 result. Only used for tlb_logstate */
278 TCP_LOG_STATE_CLEAR = -1, /* Deactivate and clear tracing. Passed
279 to tcp_log_state_change() but never
280 stored in any logstate variable */
281 TCP_LOG_STATE_OFF = 0, /* Pause */
283 /* Positively numbered states represent active logging modes */
284 TCP_LOG_STATE_TAIL=1, /* Keep the trailing events */
285 TCP_LOG_STATE_HEAD=2, /* Keep the leading events */
286 TCP_LOG_STATE_HEAD_AUTO=3, /* Keep the leading events, and
287 automatically dump them to the
289 TCP_LOG_STATE_CONTINUAL=4, /* Continually dump the data when full */
290 TCP_LOG_STATE_TAIL_AUTO=5, /* Keep the trailing events, and
291 automatically dump them when the
293 TCP_LOG_VIA_BBPOINTS=6 /* Log only if the BB point has been configured */
296 /* Use this if we don't know whether the operation succeeded. */
297 #define ERRNO_UNK (-1)
300 * If the user included dev/tcp_log/tcp_log_dev.h, then include our private
301 * headers. Otherwise, there is no reason to pollute all the files with an
302 * additional include.
304 * This structure is aligned to an 8-byte boundary to match the alignment
305 * requirements of (struct tcp_log_buffer).
307 #ifdef __tcp_log_dev_h__
308 struct tcp_log_header {
309 struct tcp_log_common_header tlh_common;
310 #define tlh_version tlh_common.tlch_version
311 #define tlh_type tlh_common.tlch_type
312 #define tlh_length tlh_common.tlch_length
313 struct in_endpoints tlh_ie;
314 struct timeval tlh_offset; /* Uptime -> UTC offset */
315 char tlh_id[TCP_LOG_ID_LEN];
316 char tlh_reason[TCP_LOG_REASON_LEN];
317 char tlh_tag[TCP_LOG_TAG_LEN];
323 struct tcp_log_dev_log_queue {
324 struct tcp_log_dev_queue tldl_common;
325 char tldl_id[TCP_LOG_ID_LEN];
326 char tldl_reason[TCP_LOG_REASON_LEN];
327 char tldl_tag[TCP_LOG_TAG_LEN];
328 struct in_endpoints tldl_ie;
329 struct tcp_log_stailq tldl_entries;
334 #endif /* __tcp_log_dev_h__ */
337 * Defined BBPOINTS that can be used
338 * with TCP_LOG_VIA_BBPOINTS.
340 #define TCP_BBPOINT_NONE 0
341 #define TCP_BBPOINT_REQ_LEVEL_LOGGING 1
343 /*********************/
344 /* TCP Trace points */
345 /*********************/
347 * TCP trace points are interesting points within
348 * the TCP code that the author/debugger may want
349 * to have BB logging enabled if we hit that point.
350 * In order to enable a trace point you set the
351 * sysctl var net.inet.tcp.bb.tp.number to
352 * one of the numbers listed below. You also
353 * must make sure net.inet.tcp.bb.tp.bbmode is
354 * non-zero, the default is 4 for continuous tracing.
355 * You also set in the number of connections you want
356 * have get BB logs in net.inet.tcp.bb.tp.count.
358 * Count will decrement every time BB logging is assigned
359 * to a connection that hit your tracepoint.
361 * You can enable all trace points by setting the number
362 * to 0xffffffff. You can disable all trace points by
363 * setting number to zero (or count to 0).
365 * Below are the enumerated list of tracepoints that
366 * have currently been defined in the code. Add more
367 * as you add a call to rack_trace_point(rack, <name>);
368 * where <name> is defined below.
370 #define TCP_TP_HWENOBUF 0x00000001 /* When we are doing hardware pacing and hit enobufs */
371 #define TCP_TP_ENOBUF 0x00000002 /* When we hit enobufs with software pacing */
372 #define TCP_TP_COLLAPSED_WND 0x00000003 /* When a peer to collapses its rwnd on us */
373 #define TCP_TP_COLLAPSED_RXT 0x00000004 /* When we actually retransmit a collapsed window rsm */
374 #define TCP_TP_REQ_LOG_FAIL 0x00000005 /* We tried to allocate a Request log but had no space */
375 #define TCP_TP_RESET_RCV 0x00000006 /* Triggers when we receive a RST */
376 #define TCP_TP_EXCESS_RXT 0x00000007 /* When we get excess RXT's clamping the cwnd */
377 #define TCP_TP_SAD_TRIGGERED 0x00000008 /* Sack Attack Detection triggers */
379 #define TCP_TP_SAD_SUSPECT 0x0000000a /* A sack has supicious information in it */
383 extern uint32_t tcp_trace_point_config;
384 extern uint32_t tcp_trace_point_bb_mode;
385 extern int32_t tcp_trace_point_count;
388 * Returns true if any sort of BB logging is enabled,
389 * commonly used throughout the codebase.
392 tcp_bblogging_on(struct tcpcb *tp)
394 if (tp->_t_logstate <= TCP_LOG_STATE_OFF)
396 if (tp->_t_logstate == TCP_LOG_VIA_BBPOINTS)
402 * Returns true if we match a specific bbpoint when
403 * in TCP_LOG_VIA_BBPOINTS, but also returns true
404 * for all the other logging states.
407 tcp_bblogging_point_on(struct tcpcb *tp, uint8_t bbpoint)
409 if (tp->_t_logstate <= TCP_LOG_STATE_OFF)
411 if ((tp->_t_logstate == TCP_LOG_VIA_BBPOINTS) &&
412 (tp->_t_logpoint == bbpoint))
414 else if (tp->_t_logstate == TCP_LOG_VIA_BBPOINTS)
420 tcp_set_bblog_state(struct tcpcb *tp, uint8_t ls, uint8_t bbpoint)
422 if ((ls == TCP_LOG_VIA_BBPOINTS) &&
423 (tp->_t_logstate <= TCP_LOG_STATE_OFF)){
425 * We don't allow a BBPOINTS set to override
426 * other types of BB logging set by other means such
427 * as the bb_ratio/bb_state URL parameters. In other
428 * words BBlogging must be *off* in order to turn on
431 tp->_t_logpoint = bbpoint;
432 tp->_t_logstate = ls;
433 } else if (ls != TCP_LOG_VIA_BBPOINTS) {
435 if ((ls >= TCP_LOG_STATE_OFF) &&
436 (ls < TCP_LOG_VIA_BBPOINTS))
437 tp->_t_logstate = ls;
441 static inline uint32_t
442 tcp_get_bblog_state(struct tcpcb *tp)
444 return (tp->_t_logstate);
448 tcp_trace_point(struct tcpcb *tp, int num)
451 if (((tcp_trace_point_config == num) ||
452 (tcp_trace_point_config == 0xffffffff)) &&
453 (tcp_trace_point_bb_mode != 0) &&
454 (tcp_trace_point_count > 0) &&
455 (tcp_bblogging_on(tp) == 0)) {
457 res = atomic_fetchadd_int(&tcp_trace_point_count, -1);
459 tcp_set_bblog_state(tp, tcp_trace_point_bb_mode, TCP_BBPOINT_NONE);
461 /* Loss a race assure its zero now */
462 tcp_trace_point_count = 0;
468 #define TCP_LOG_BUF_DEFAULT_SESSION_LIMIT 5000
469 #define TCP_LOG_BUF_DEFAULT_GLOBAL_LIMIT 5000000
472 * TCP_LOG_EVENT_VERBOSE: The same as TCP_LOG_EVENT, except it always
473 * tries to record verbose information.
475 #define TCP_LOG_EVENT_VERBOSE(tp, th, rxbuf, txbuf, eventid, errornum, len, stackinfo, th_hostorder, tv) \
477 if (tcp_bblogging_on(tp)) \
478 tcp_log_event(tp, th, rxbuf, txbuf, eventid, \
479 errornum, len, stackinfo, th_hostorder, \
480 tp->t_output_caller, __func__, __LINE__, tv);\
484 * TCP_LOG_EVENT: This is a macro so we can capture function/line
485 * information when needed. You can use the macro when you are not
486 * doing a lot of prep in the stack specific information i.e. you
487 * don't add extras (stackinfo). If you are adding extras which
488 * means filling out a stack variable instead use the tcp_log_event()
489 * function but enclose the call to the log (and all the setup) in a
490 * if (tcp_bblogging_on(tp)) {
491 * ... setup and logging call ...
494 * Always use the macro tcp_bblogging_on() since sometimes the defintions
497 * BBlogging also supports the concept of a BBpoint. The idea behind this
498 * is that when you set a specific BBpoint on and turn the logging into
499 * the BBpoint mode (TCP_LOG_VIA_BBPOINTS) you will be defining very very
500 * few of these points to come out. The point is specific to a code you
501 * want tied to that one BB logging. This allows you to turn on a much broader
502 * scale set of limited logging on more connections without overwhelming the
503 * I/O system with too much BBlogs. This of course means you need to be quite
504 * careful on how many BBlogs go with each point, but you can have multiple points
505 * only one of which is active at a time.
507 * To define a point you add it above under the define for TCP_BBPOINT_NONE (which
508 * is the default i.e. no point is defined. You then, for your point use the
509 * tcp_bblogging_point_on(struct tcpcb *tp, uint8_t bbpoint) inline to enclose
510 * your call to tcp_log_event. Do not use one of the TCP_LOGGING macros else
511 * your point will never come out. You specify your defined point in the bbpoint
512 * side of the inline. An example of this you can find in rack where the
513 * TCP_BBPOINT_REQ_LEVEL_LOGGING is used. There a specific set of logs are generated
514 * for each request that tcp is tracking.
516 * When turning on BB logging use the inline:
517 * tcp_set_bblog_state(struct tcpcb *tp, uint8_t ls, uint8_t bbpoint)
518 * the ls field is the logging state TCP_LOG_STATE_CONTINUAL etc. The
519 * bbpoint field is ignored unless the ls field is set to TCP_LOG_VIA_BBPOINTS.
520 * Currently there is only a socket option that turns on the non-BBPOINT
524 * TCP_LOG_EVENT(struct tcpcb *tp, struct tcphdr *th, struct sockbuf *rxbuf,
525 * struct sockbuf *txbuf, uint8_t eventid, int errornum,
526 * union tcp_log_stackspecific *stackinfo)
528 * tp is mandatory and must be write locked.
529 * th is optional; if present, it will appear in the record.
530 * rxbuf and txbuf are optional; if present, they will appear in the record.
531 * eventid is mandatory.
532 * errornum is mandatory (it indicates the success or failure of the
533 * operation associated with the event).
534 * len indicates the length of the packet. If no packet, use 0.
535 * stackinfo is optional; if present, it will appear in the record.
538 #ifdef TCP_LOG_FORCEVERBOSE
539 #define TCP_LOG_EVENT TCP_LOG_EVENT_VERBOSE
541 #define TCP_LOG_EVENT(tp, th, rxbuf, txbuf, eventid, errornum, len, stackinfo, th_hostorder) \
543 if (tcp_log_verbose) \
544 TCP_LOG_EVENT_VERBOSE(tp, th, rxbuf, txbuf, \
545 eventid, errornum, len, stackinfo, \
546 th_hostorder, NULL); \
547 else if (tcp_bblogging_on(tp)) \
548 tcp_log_event(tp, th, rxbuf, txbuf, eventid, \
549 errornum, len, stackinfo, th_hostorder, \
550 NULL, NULL, 0, NULL); \
552 #endif /* TCP_LOG_FORCEVERBOSE */
553 #define TCP_LOG_EVENTP(tp, th, rxbuf, txbuf, eventid, errornum, len, stackinfo, th_hostorder, tv) \
555 if (tcp_bblogging_on(tp)) \
556 tcp_log_event(tp, th, rxbuf, txbuf, eventid, \
557 errornum, len, stackinfo, th_hostorder, \
558 NULL, NULL, 0, tv); \
562 extern bool tcp_log_verbose;
563 void tcp_log_drain(struct tcpcb *tp);
564 int tcp_log_dump_tp_logbuf(struct tcpcb *tp, char *reason, int how, bool force);
565 void tcp_log_dump_tp_bucket_logbufs(struct tcpcb *tp, char *reason);
566 struct tcp_log_buffer *tcp_log_event(struct tcpcb *tp, struct tcphdr *th, struct sockbuf *rxbuf,
567 struct sockbuf *txbuf, uint8_t eventid, int errornum, uint32_t len,
568 union tcp_log_stackspecific *stackinfo, int th_hostorder,
569 const char *output_caller, const char *func, int line, const struct timeval *tv);
570 size_t tcp_log_get_id(struct tcpcb *tp, char *buf);
571 size_t tcp_log_get_tag(struct tcpcb *tp, char *buf);
572 u_int tcp_log_get_id_cnt(struct tcpcb *tp);
573 int tcp_log_getlogbuf(struct sockopt *sopt, struct tcpcb *tp);
574 void tcp_log_init(void);
575 int tcp_log_set_id(struct tcpcb *tp, char *id);
576 int tcp_log_set_tag(struct tcpcb *tp, char *tag);
577 int tcp_log_state_change(struct tcpcb *tp, int state);
578 void tcp_log_tcpcbinit(struct tcpcb *tp);
579 void tcp_log_tcpcbfini(struct tcpcb *tp);
580 void tcp_log_flowend(struct tcpcb *tp);
581 void tcp_log_sendfile(struct socket *so, off_t offset, size_t nbytes,
583 int tcp_log_apply_ratio(struct tcpcb *tp, int ratio);
584 #else /* !TCP_BLACKBOX */
585 #define tcp_log_verbose (false)
587 static inline struct tcp_log_buffer *
588 tcp_log_event(struct tcpcb *tp, struct tcphdr *th, struct sockbuf *rxbuf,
589 struct sockbuf *txbuf, uint8_t eventid, int errornum, uint32_t len,
590 union tcp_log_stackspecific *stackinfo, int th_hostorder,
591 const char *output_caller, const char *func, int line,
592 const struct timeval *tv)
597 #endif /* TCP_BLACKBOX */
600 #endif /* __tcp_log_buf_h__ */