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Add a comment to the new tcp_get_srtt method to clarify that ticks

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are kept in a shifted form and need to be un-shifted before use.

Suggested by: rpokala@
This commit is contained in:
Randall Stewart 2023-05-19 15:53:26 -04:00
parent 31edf56b15
commit 72ae938252
1 changed files with 3 additions and 1 deletions
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4
sys/netinet/tcp_subr.c
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@ -4649,8 +4649,10 @@ tcp_get_srtt(struct tcpcb *tp, int granularity)
if (tp->t_tmr_granularity == TCP_TMR_GRANULARITY_USEC)
srtt = tp->t_srtt;
else if (tp->t_tmr_granularity == TCP_TMR_GRANULARITY_TICKS)
else if (tp->t_tmr_granularity == TCP_TMR_GRANULARITY_TICKS) {
/* TICKS are stored shifted; unshift for the real TICKS */
srtt = tp->t_srtt >> TCP_RTT_SHIFT;
}
if (tp->t_tmr_granularity == granularity)
return (srtt);
/* If we reach here they are oppsite what the caller wants */