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diff --git a/sys/netinet/tcp_timer.c b/sys/netinet/tcp_timer.c
--- a/sys/netinet/tcp_timer.c
+++ b/sys/netinet/tcp_timer.c
@@ -542,7 +542,6 @@
TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);
CURVNET_SET(inp->inp_vnet);
tcp_free_sackholes(tp);
- TCP_LOG_EVENT(tp, NULL, NULL, NULL, TCP_LOG_RTO, 0, 0, NULL, false);
if (tp->t_fb->tfb_tcp_rexmit_tmr) {
/* The stack has a timer action too. */
(*tp->t_fb->tfb_tcp_rexmit_tmr)(tp);
@@ -790,6 +789,35 @@
return (rv);
}
+static void
+tcp_bblog_timer(struct tcpcb *tp, tt_which which, tt_what what, uint32_t ticks)
+{
+ struct tcp_log_buffer *lgb;
+ uint64_t ms;
+
+ INP_WLOCK_ASSERT(tptoinpcb(tp));
+ if (tp->t_logstate != TCP_LOG_STATE_OFF)
+ lgb = tcp_log_event_(tp, NULL, NULL, NULL, TCP_LOG_RTO, 0, 0,
+ NULL, false, NULL, NULL, 0, NULL);
+ else
+ lgb = NULL;
+ if (lgb != NULL) {
+ lgb->tlb_flex1 = (what << 8) | which;
+ if (what == TT_START) {
+ /* Convert ticks to ms and store it in tlb_flex2. */
+ if (hz == 1000)
+ lgb->tlb_flex2 = ticks;
+ else {
+ ms = (((uint64_t)ticks * 1000) + (hz - 1)) / hz;
+ if (ms > UINT32_MAX)
+ lgb->tlb_flex2 = UINT32_MAX;
+ else
+ lgb->tlb_flex2 = (uint32_t)ms;
+ }
+ }
+ }
+}
+
static inline tt_which
tcp_timer_next(struct tcpcb *tp, sbintime_t *precision)
{
@@ -816,6 +844,7 @@
struct inpcb *inp = tptoinpcb(tp);
sbintime_t precision;
tt_which which;
+ bool tp_valid;
INP_WLOCK_ASSERT(inp);
MPASS((curthread->td_pflags & TDP_INTCPCALLOUT) == 0);
@@ -827,7 +856,10 @@
tp->t_timers[which] = SBT_MAX;
tp->t_precisions[which] = 0;
- if (tcp_timersw[which](tp)) {
+ tcp_bblog_timer(tp, which, TT_PROCESSING, 0);
+ tp_valid = tcp_timersw[which](tp);
+ if (tp_valid) {
+ tcp_bblog_timer(tp, which, TT_PROCESSED, 0);
if ((which = tcp_timer_next(tp, &precision)) != TT_N) {
callout_reset_sbt_on(&tp->t_callout,
tp->t_timers[which], precision, tcp_timer_enter,
@@ -847,6 +879,7 @@
{
struct inpcb *inp = tptoinpcb(tp);
sbintime_t precision;
+ tt_what what;
#ifdef TCP_OFFLOAD
if (tp->t_flags & TF_TOE)
@@ -855,11 +888,15 @@
INP_WLOCK_ASSERT(inp);
- if (delta > 0)
+ if (delta > 0) {
+ what = TT_STARTING;
callout_when(tick_sbt * delta, 0, C_HARDCLOCK,
&tp->t_timers[which], &tp->t_precisions[which]);
- else
+ } else {
+ what = TT_STOPPING;
tp->t_timers[which] = SBT_MAX;
+ }
+ tcp_bblog_timer(tp, which, what, delta);
if ((which = tcp_timer_next(tp, &precision)) != TT_N)
callout_reset_sbt_on(&tp->t_callout, tp->t_timers[which],
diff --git a/sys/netinet/tcp_var.h b/sys/netinet/tcp_var.h
--- a/sys/netinet/tcp_var.h
+++ b/sys/netinet/tcp_var.h
@@ -135,6 +135,13 @@
TT_N,
} tt_which;
+typedef enum {
+ TT_PROCESSING = 0,
+ TT_PROCESSED,
+ TT_STARTING,
+ TT_STOPPING,
+} tt_what;
+
/*
* Tcp control block, one per tcp connection.
*/

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