diff --git a/sys/kern/uipc_usrreq.c b/sys/kern/uipc_usrreq.c
index 00fd8099c2e..a540cc0dfa8 100644
--- a/sys/kern/uipc_usrreq.c
+++ b/sys/kern/uipc_usrreq.c
@@ -1047,6 +1047,32 @@ release:
 	return (error);
 }
 
+static int
+uipc_ready(struct socket *so, struct mbuf *m, int count)
+{
+	struct unpcb *unp, *unp2;
+	struct socket *so2;
+	int error;
+
+	unp = sotounpcb(so);
+
+	UNP_LINK_RLOCK();
+	unp2 = unp->unp_conn;
+	UNP_PCB_LOCK(unp2);
+	so2 = unp2->unp_socket;
+
+	SOCKBUF_LOCK(&so2->so_rcv);
+	if ((error = sbready(&so2->so_rcv, m, count)) == 0)
+		sorwakeup_locked(so2);
+	else
+		SOCKBUF_UNLOCK(&so2->so_rcv);
+
+	UNP_PCB_UNLOCK(unp2);
+	UNP_LINK_RUNLOCK();
+
+	return (error);
+}
+
 static int
 uipc_sense(struct socket *so, struct stat *sb)
 {
@@ -1161,6 +1187,7 @@ static struct pr_usrreqs uipc_usrreqs_stream = {
 	.pru_peeraddr =		uipc_peeraddr,
 	.pru_rcvd =		uipc_rcvd,
 	.pru_send =		uipc_send,
+	.pru_ready =		uipc_ready,
 	.pru_sense =		uipc_sense,
 	.pru_shutdown =		uipc_shutdown,
 	.pru_sockaddr =		uipc_sockaddr,