D48261.diff
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	diff --git a/sys/netinet/tcp_stacks/bbr.c b/sys/netinet/tcp_stacks/bbr.c
	--- a/sys/netinet/tcp_stacks/bbr.c
	+++ b/sys/netinet/tcp_stacks/bbr.c
	@@ -14587,6 +14587,7 @@
	{
	struct inpcb *inp = tptoinpcb(tp);
	struct tcp_bbr *bbr;
	+ uint64_t loptval;
	int32_t error, optval;

	bbr = (struct tcp_bbr *)tp->t_fb_ptr;
	@@ -14647,7 +14648,7 @@
	optval = bbr->rc_loss_exit;
	break;
	case TCP_BBR_USEDEL_RATE:
	- error = EINVAL;
	+ loptval = get_filter_value(&bbr->r_ctl.rc_delrate);
	break;
	case TCP_BBR_MIN_RTO:
	optval = bbr->r_ctl.rc_min_rto_ms;
	@@ -14731,7 +14732,10 @@
	break;
	}
	INP_WUNLOCK(inp);
	- error = sooptcopyout(sopt, &optval, sizeof optval);
	+ if (sopt->sopt_name == TCP_BBR_USEDEL_RATE)
	+ error = sooptcopyout(sopt, &loptval, sizeof loptval);
	+ else
	+ error = sooptcopyout(sopt, &optval, sizeof optval);
	return (error);
	}