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
@@ -2261,8 +2261,7 @@
 				log.u_bbr.lt_epoch = 0;
 			}
 			if (m->m_flags & M_TSTMP_LRO) {
-				tv.tv_sec = m->m_pkthdr.rcv_tstmp / 1000000000;
-				tv.tv_usec = (m->m_pkthdr.rcv_tstmp % 1000000000) / 1000;
+				mbuf_tstmp2timeval(m, &tv);
 				log.u_bbr.flex5 = tcp_tv_to_usectick(&tv);
 			} else {
 				/* No arrival timestamp */
@@ -11691,8 +11690,7 @@
 		}
 	}
 	if (m->m_flags & M_TSTMP_LRO) {
-		tv.tv_sec = m->m_pkthdr.rcv_tstmp /1000000000;
-		tv.tv_usec = (m->m_pkthdr.rcv_tstmp % 1000000000)/1000;
+		mbuf_tstmp2timeval(m, &tv);
 	} else {
 		/* Should not be should we kassert instead? */
 		tcp_get_usecs(&tv);
diff --git a/sys/netinet/tcp_stacks/rack.c b/sys/netinet/tcp_stacks/rack.c
--- a/sys/netinet/tcp_stacks/rack.c
+++ b/sys/netinet/tcp_stacks/rack.c
@@ -14631,8 +14631,7 @@
 		}
 	}
 	if (m->m_flags & M_TSTMP_LRO) {
-		tv.tv_sec = m->m_pkthdr.rcv_tstmp /1000000000;
-		tv.tv_usec = (m->m_pkthdr.rcv_tstmp % 1000000000)/1000;
+		mbuf_tstmp2timeval(m, &tv);
 	} else {
 		/* Should not be should we kassert instead? */
 		tcp_get_usecs(&tv);
diff --git a/sys/sys/mbuf.h b/sys/sys/mbuf.h
--- a/sys/sys/mbuf.h
+++ b/sys/sys/mbuf.h
@@ -1675,12 +1675,24 @@
 {
 
 	KASSERT((m->m_flags & M_PKTHDR) != 0, ("mbuf %p no M_PKTHDR", m));
-	KASSERT((m->m_flags & (M_TSTMP|M_TSTMP_LRO)) != 0, ("mbuf %p no M_TSTMP or M_TSTMP_LRO", m));
+	KASSERT((m->m_flags & (M_TSTMP|M_TSTMP_LRO)) != 0,
+	    ("mbuf %p no M_TSTMP or M_TSTMP_LRO", m));
 	ts->tv_sec = m->m_pkthdr.rcv_tstmp / 1000000000;
 	ts->tv_nsec = m->m_pkthdr.rcv_tstmp % 1000000000;
 }
 #endif
 
+static inline void
+mbuf_tstmp2timeval(struct mbuf *m, struct timeval *tv)
+{
+
+	KASSERT((m->m_flags & M_PKTHDR) != 0, ("mbuf %p no M_PKTHDR", m));
+	KASSERT((m->m_flags & (M_TSTMP|M_TSTMP_LRO)) != 0,
+	    ("mbuf %p no M_TSTMP or M_TSTMP_LRO", m));
+	tv->tv_sec = m->m_pkthdr.rcv_tstmp / 1000000000;
+	tv->tv_usec = (m->m_pkthdr.rcv_tstmp % 1000000000) / 1000;
+}
+
 #ifdef DEBUGNET
 /* Invoked from the debugnet client code. */
 void	debugnet_mbuf_drain(void);