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sctp: improve heartbeat timer computation

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PR:		278666
Reviewed by:	Albin Hellqvist
MFC after:	3 days
Pull Request:	https://reviews.freebsd.org/D45107
This commit is contained in:
Michael Tuexen 2024-05-10 20:58:01 +02:00
parent 88cbbbb607
commit 5120ea0d88
1 changed files with 10 additions and 10 deletions
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20
sys/netinet/sctputil.c
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@ -2289,19 +2289,19 @@ sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
} else {
to_ticks = net->RTO;
}
rndval = sctp_select_initial_TSN(&inp->sctp_ep);
jitter = rndval % to_ticks;
if (to_ticks > 1) {
to_ticks >>= 1;
}
if (jitter < (UINT32_MAX - to_ticks)) {
to_ticks += jitter;
} else {
to_ticks = UINT32_MAX;
}
if (!((net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
(net->dest_state & SCTP_ADDR_REACHABLE)) &&
((net->dest_state & SCTP_ADDR_PF) == 0)) {
if (to_ticks > 1) {
rndval = sctp_select_initial_TSN(&inp->sctp_ep);
jitter = rndval % to_ticks;
to_ticks >>= 1;
if (jitter < (UINT32_MAX - to_ticks)) {
to_ticks += jitter;
} else {
to_ticks = UINT32_MAX;
}
}
if (net->heart_beat_delay < (UINT32_MAX - to_ticks)) {
to_ticks += net->heart_beat_delay;
} else {