Index: sys/mbuf.h
===================================================================
RCS file: /cvs/src/sys/sys/mbuf.h,v
retrieving revision 1.253
diff -u -p -r1.253 mbuf.h
--- sys/mbuf.h	15 May 2021 08:07:20 -0000	1.253
+++ sys/mbuf.h	12 Feb 2022 07:38:43 -0000
@@ -429,6 +429,7 @@ void	m_align(struct mbuf *, int);
 struct mbuf *m_clget(struct mbuf *, int, u_int);
 void	m_extref(struct mbuf *, struct mbuf *);
 void	m_pool_init(struct pool *, u_int, u_int, const char *);
+u_int	m_pool_used(void);
 void	m_extfree_pool(caddr_t, u_int, void *);
 void	m_adj(struct mbuf *, int);
 int	m_copyback(struct mbuf *, int, int, const void *, int);
Index: kern/uipc_mbuf.c
===================================================================
RCS file: /cvs/src/sys/kern/uipc_mbuf.c,v
retrieving revision 1.281
diff -u -p -r1.281 uipc_mbuf.c
--- kern/uipc_mbuf.c	8 Feb 2022 11:28:19 -0000	1.281
+++ kern/uipc_mbuf.c	12 Feb 2022 07:38:44 -0000
@@ -1502,6 +1502,12 @@ m_pool_init(struct pool *pp, u_int size,
 	pool_set_constraints(pp, &kp_dma_contig);
 }
 
+u_int
+m_pool_used(void)
+{
+	return ((mbuf_mem_alloc * 100) / mbuf_mem_limit);
+}
+
 #ifdef DDB
 void
 m_print(void *v,
Index: kern/uipc_socket2.c
===================================================================
RCS file: /cvs/src/sys/kern/uipc_socket2.c,v
retrieving revision 1.116
diff -u -p -r1.116 uipc_socket2.c
--- kern/uipc_socket2.c	6 Nov 2021 05:26:33 -0000	1.116
+++ kern/uipc_socket2.c	12 Feb 2022 07:38:44 -0000
@@ -155,7 +155,7 @@ sonewconn(struct socket *head, int conns
 	 */
 	soassertlocked(head);
 
-	if (mclpools[0].pr_nout > mclpools[0].pr_hardlimit * 95 / 100)
+	if (m_pool_used() > 95)
 		return (NULL);
 	if (head->so_qlen + head->so_q0len > head->so_qlimit * 3)
 		return (NULL);
@@ -517,13 +517,13 @@ int
 sbchecklowmem(void)
 {
 	static int sblowmem;
+	unsigned int used = m_pool_used();
 
-	if (mclpools[0].pr_nout < mclpools[0].pr_hardlimit * 60 / 100 ||
-	    mbpool.pr_nout < mbpool.pr_hardlimit * 60 / 100)
+	if (used < 60)
 		sblowmem = 0;
-	if (mclpools[0].pr_nout > mclpools[0].pr_hardlimit * 80 / 100 ||
-	    mbpool.pr_nout > mbpool.pr_hardlimit * 80 / 100)
+	else if (used > 80)
 		sblowmem = 1;
+
 	return (sblowmem);
 }