Move pr_attach and pr_detach to a new structure pr_usrreqs that can

then be shared among protosw structures, following the same basic
direction as NetBSD and FreeBSD for this.

Split PRU_CONTROL out of pr_usrreq into pru_control, giving it the
proper prototype to eliminate the previously necessary casts.

ok mvs@ bluhm@

26 files changed, 198 insertions, 175 deletions

diff --git a/sys/kern/sys_socket.c b/sys/kern/sys_socket.c
index 103ee79ca6a..e6cae385d4b 100644
--- a/sys/kern/sys_socket.c
+++ b/sys/kern/sys_socket.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sys_socket.c,v 1.47 2021/10/24 00:02:25 jsg Exp $	*/
+/*	$OpenBSD: sys_socket.c,v 1.48 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: sys_socket.c,v 1.13 1995/08/12 23:59:09 mycroft Exp $	*/
 
 /*
@@ -139,9 +139,11 @@ soo_ioctl(struct file *fp, u_long cmd, caddr_t data, struct proc *p)
 		}
 		if (IOCGROUP(cmd) == 'r')
 			return (EOPNOTSUPP);
+		if (so->so_proto->pr_usrreqs->pru_control == NULL)
+			return (EOPNOTSUPP);
 		KERNEL_LOCK();
-		error = ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL,
-		    (struct mbuf *)cmd, (struct mbuf *)data, NULL, p));
+		error = ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd,
+		    data, NULL));
 		KERNEL_UNLOCK();
 		break;
 	}
diff --git a/sys/kern/uipc_proto.c b/sys/kern/uipc_proto.c
index 8ec85a32169..c0d9d6f989e 100644
--- a/sys/kern/uipc_proto.c
+++ b/sys/kern/uipc_proto.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uipc_proto.c,v 1.20 2021/05/30 21:01:27 bluhm Exp $	*/
+/*	$OpenBSD: uipc_proto.c,v 1.21 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: uipc_proto.c,v 1.8 1996/02/13 21:10:47 christos Exp $	*/
 
 /*-
@@ -51,8 +51,7 @@ const struct protosw unixsw[] = {
   .pr_protocol	= PF_UNIX,
   .pr_flags	= PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS,
   .pr_usrreq	= uipc_usrreq,
-  .pr_attach	= uipc_attach,
-  .pr_detach	= uipc_detach,
+  .pr_usrreqs	= &uipc_usrreqs,
 },
 {
   .pr_type	= SOCK_SEQPACKET,
@@ -60,8 +59,7 @@ const struct protosw unixsw[] = {
   .pr_protocol	= PF_UNIX,
   .pr_flags	= PR_ATOMIC|PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS,
   .pr_usrreq	= uipc_usrreq,
-  .pr_attach	= uipc_attach,
-  .pr_detach	= uipc_detach,
+  .pr_usrreqs	= &uipc_usrreqs,
 },
 {
   .pr_type	= SOCK_DGRAM,
@@ -69,8 +67,7 @@ const struct protosw unixsw[] = {
   .pr_protocol	= PF_UNIX,
   .pr_flags	= PR_ATOMIC|PR_ADDR|PR_RIGHTS,
   .pr_usrreq	= uipc_usrreq,
-  .pr_attach	= uipc_attach,
-  .pr_detach	= uipc_detach,
+  .pr_usrreqs	= &uipc_usrreqs,
 }
 };
 
diff --git a/sys/kern/uipc_socket.c b/sys/kern/uipc_socket.c
index d294b4df857..084f9c44edc 100644
--- a/sys/kern/uipc_socket.c
+++ b/sys/kern/uipc_socket.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uipc_socket.c,v 1.273 2022/02/16 13:16:10 visa Exp $	*/
+/*	$OpenBSD: uipc_socket.c,v 1.274 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: uipc_socket.c,v 1.21 1996/02/04 02:17:52 christos Exp $	*/
 
 /*
@@ -169,7 +169,7 @@ socreate(int dom, struct socket **aso, int type, int proto)
 		prp = pffindproto(dom, proto, type);
 	else
 		prp = pffindtype(dom, type);
-	if (prp == NULL || prp->pr_attach == NULL)
+	if (prp == NULL || prp->pr_usrreqs->pru_attach == NULL)
 		return (EPROTONOSUPPORT);
 	if (prp->pr_type != type)
 		return (EPROTOTYPE);
@@ -192,7 +192,7 @@ socreate(int dom, struct socket **aso, int type, int proto)
 	so->so_rcv.sb_timeo_nsecs = INFSLP;
 
 	s = solock(so);
-	error = (*prp->pr_attach)(so, proto);
+	error = (*prp->pr_usrreqs->pru_attach)(so, proto);
 	if (error) {
 		so->so_state |= SS_NOFDREF;
 		/* sofree() calls sounlock(). */
@@ -347,8 +347,8 @@ soclose(struct socket *so, int flags)
 drop:
 	if (so->so_pcb) {
 		int error2;
-		KASSERT(so->so_proto->pr_detach);
-		error2 = (*so->so_proto->pr_detach)(so);
+		KASSERT(so->so_proto->pr_usrreqs->pru_detach != NULL);
+		error2 = (*so->so_proto->pr_usrreqs->pru_detach)(so);
 		if (error == 0)
 			error = error2;
 	}
diff --git a/sys/kern/uipc_socket2.c b/sys/kern/uipc_socket2.c
index df28d6f10e8..df506fd5ada 100644
--- a/sys/kern/uipc_socket2.c
+++ b/sys/kern/uipc_socket2.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uipc_socket2.c,v 1.118 2022/02/21 12:09:15 jsg Exp $	*/
+/*	$OpenBSD: uipc_socket2.c,v 1.119 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: uipc_socket2.c,v 1.11 1996/02/04 02:17:55 christos Exp $	*/
 
 /*
@@ -150,7 +150,7 @@ sonewconn(struct socket *head, int connstatus)
 
 	/*
 	 * XXXSMP as long as `so' and `head' share the same lock, we
-	 * can call soreserve() and pr_attach() below w/o explicitly
+	 * can call soreserve() and pru_attach() below w/o explicitly
 	 * locking `so'.
 	 */
 	soassertlocked(head);
@@ -194,7 +194,7 @@ sonewconn(struct socket *head, int connstatus)
 	sigio_copy(&so->so_sigio, &head->so_sigio);
 
 	soqinsque(head, so, soqueue);
-	if ((*so->so_proto->pr_attach)(so, 0)) {
+	if ((*so->so_proto->pr_usrreqs->pru_attach)(so, 0)) {
 		(void) soqremque(so, soqueue);
 		sigio_free(&so->so_sigio);
 		klist_free(&so->so_rcv.sb_sel.si_note);
diff --git a/sys/kern/uipc_usrreq.c b/sys/kern/uipc_usrreq.c
index dbb1845358f..a25bda5a765 100644
--- a/sys/kern/uipc_usrreq.c
+++ b/sys/kern/uipc_usrreq.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uipc_usrreq.c,v 1.161 2021/12/29 07:15:13 anton Exp $	*/
+/*	$OpenBSD: uipc_usrreq.c,v 1.162 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: uipc_usrreq.c,v 1.18 1996/02/09 19:00:50 christos Exp $	*/
 
 /*
@@ -150,8 +150,6 @@ uipc_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 	struct socket *so2;
 	int error = 0;
 
-	if (req == PRU_CONTROL)
-		return (EOPNOTSUPP);
 	if (req != PRU_SEND && control && control->m_len) {
 		error = EOPNOTSUPP;
 		goto release;
@@ -472,6 +470,11 @@ uipc_detach(struct socket *so)
 	return (0);
 }
 
+const struct pr_usrreqs uipc_usrreqs = {
+	.pru_attach	= uipc_attach,
+	.pru_detach	= uipc_detach,
+};
+
 int
 uipc_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
     size_t newlen)
diff --git a/sys/net/if.c b/sys/net/if.c
index 0bda92609c6..c7a3f6b1924 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if.c,v 1.647 2022/01/07 16:39:18 deraadt Exp $	*/
+/*	$OpenBSD: if.c,v 1.648 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: if.c,v 1.35 1996/05/07 05:26:04 thorpej Exp $	*/
 
 /*
@@ -2258,11 +2258,12 @@ forceup:
 			break;
 		/* FALLTHROUGH */
 	default:
-		error = ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL,
-			(struct mbuf *) cmd, (struct mbuf *) data,
-			(struct mbuf *) ifp, p));
-		if (error != EOPNOTSUPP)
-			break;
+		if (so->so_proto->pr_usrreqs->pru_control != NULL) {
+			error = ((*so->so_proto->pr_usrreqs->pru_control)(so,
+			    cmd, data, ifp));
+			if (error != EOPNOTSUPP)
+				break;
+		}
 		switch (cmd) {
 		case SIOCAIFADDR:
 		case SIOCDIFADDR:
diff --git a/sys/net/pfkeyv2.c b/sys/net/pfkeyv2.c
index b848dab990a..fc08630cfb6 100644
--- a/sys/net/pfkeyv2.c
+++ b/sys/net/pfkeyv2.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: pfkeyv2.c,v 1.229 2021/12/19 23:30:08 bluhm Exp $ */
+/* $OpenBSD: pfkeyv2.c,v 1.230 2022/02/25 08:36:01 guenther Exp $ */
 
 /*
  *	@(#)COPYRIGHT	1.1 (NRL) 17 January 1995
@@ -199,6 +199,11 @@ pfdatatopacket(void *data, int len, struct mbuf **packet)
 	return (0);
 }
 
+const struct pr_usrreqs pfkeyv2_usrreqs = {
+	.pru_attach	= pfkeyv2_attach,
+	.pru_detach	= pfkeyv2_detach,
+};
+
 const struct protosw pfkeysw[] = {
 {
   .pr_type      = SOCK_RAW,
@@ -207,8 +212,7 @@ const struct protosw pfkeysw[] = {
   .pr_flags     = PR_ATOMIC | PR_ADDR,
   .pr_output    = pfkeyv2_output,
   .pr_usrreq    = pfkeyv2_usrreq,
-  .pr_attach    = pfkeyv2_attach,
-  .pr_detach    = pfkeyv2_detach,
+  .pr_usrreqs	= &pfkeyv2_usrreqs,
   .pr_sysctl    = pfkeyv2_sysctl,
 }
 };
@@ -335,9 +339,6 @@ pfkeyv2_usrreq(struct socket *so, int req, struct mbuf *m,
 	struct pkpcb *kp;
 	int error = 0;
 
-	if (req == PRU_CONTROL)
-		return (EOPNOTSUPP);
-
 	soassertlocked(so);
 
 	if (control && control->m_len) {
diff --git a/sys/net/rtsock.c b/sys/net/rtsock.c
index 0ff8dd87531..9a9d6f40c4b 100644
--- a/sys/net/rtsock.c
+++ b/sys/net/rtsock.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: rtsock.c,v 1.324 2022/01/20 11:06:57 bluhm Exp $	*/
+/*	$OpenBSD: rtsock.c,v 1.325 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: rtsock.c,v 1.18 1996/03/29 00:32:10 cgd Exp $	*/
 
 /*
@@ -214,9 +214,6 @@ route_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 	struct rtpcb	*rop;
 	int		 error = 0;
 
-	if (req == PRU_CONTROL)
-		return (EOPNOTSUPP);
-
 	soassertlocked(so);
 
 	if (control && control->m_len) {
@@ -2389,6 +2386,11 @@ rt_setsource(unsigned int rtableid, struct sockaddr *src)
  * Definitions of protocols supported in the ROUTE domain.
  */
 
+const struct pr_usrreqs route_usrreqs = {
+	.pru_attach	= route_attach,
+	.pru_detach	= route_detach,
+};
+
 const struct protosw routesw[] = {
 {
   .pr_type	= SOCK_RAW,
@@ -2397,8 +2399,7 @@ const struct protosw routesw[] = {
   .pr_output	= route_output,
   .pr_ctloutput	= route_ctloutput,
   .pr_usrreq	= route_usrreq,
-  .pr_attach	= route_attach,
-  .pr_detach	= route_detach,
+  .pr_usrreqs	= &route_usrreqs,
   .pr_init	= route_prinit,
   .pr_sysctl	= sysctl_rtable
 }
diff --git a/sys/netinet/in_proto.c b/sys/netinet/in_proto.c
index 8e55ded3c7b..15d63ac295f 100644
--- a/sys/netinet/in_proto.c
+++ b/sys/netinet/in_proto.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: in_proto.c,v 1.96 2021/10/24 22:59:47 bluhm Exp $	*/
+/*	$OpenBSD: in_proto.c,v 1.97 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: in_proto.c,v 1.14 1996/02/18 18:58:32 christos Exp $	*/
 
 /*
@@ -190,8 +190,7 @@ const struct protosw inetsw[] = {
   .pr_ctlinput	= udp_ctlinput,
   .pr_ctloutput	= ip_ctloutput,
   .pr_usrreq	= udp_usrreq,
-  .pr_attach	= udp_attach,
-  .pr_detach	= udp_detach,
+  .pr_usrreqs	= &udp_usrreqs,
   .pr_init	= udp_init,
   .pr_sysctl	= udp_sysctl
 },
@@ -204,8 +203,7 @@ const struct protosw inetsw[] = {
   .pr_ctlinput	= tcp_ctlinput,
   .pr_ctloutput	= tcp_ctloutput,
   .pr_usrreq	= tcp_usrreq,
-  .pr_attach	= tcp_attach,
-  .pr_detach	= tcp_detach,
+  .pr_usrreqs	= &tcp_usrreqs,
   .pr_init	= tcp_init,
   .pr_slowtimo	= tcp_slowtimo,
   .pr_sysctl	= tcp_sysctl
@@ -218,8 +216,7 @@ const struct protosw inetsw[] = {
   .pr_input	= rip_input,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
 },
 {
   .pr_type	= SOCK_RAW,
@@ -229,8 +226,7 @@ const struct protosw inetsw[] = {
   .pr_input	= icmp_input,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
   .pr_init	= icmp_init,
   .pr_sysctl	= icmp_sysctl
 },
@@ -246,8 +242,7 @@ const struct protosw inetsw[] = {
 #endif
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
   .pr_sysctl	= ipip_sysctl,
   .pr_init	= ipip_init
 },
@@ -264,8 +259,7 @@ const struct protosw inetsw[] = {
 #endif
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq, /* XXX */
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
 },
 #endif
 #if defined(MPLS) && NGIF > 0
@@ -276,8 +270,7 @@ const struct protosw inetsw[] = {
   .pr_flags	= PR_ATOMIC|PR_ADDR,
   .pr_input	= in_gif_input,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
 },
 #endif /* MPLS && GIF */
 {
@@ -288,8 +281,7 @@ const struct protosw inetsw[] = {
   .pr_input	= igmp_input,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
   .pr_init	= igmp_init,
   .pr_fasttimo	= igmp_fasttimo,
   .pr_slowtimo	= igmp_slowtimo,
@@ -305,8 +297,7 @@ const struct protosw inetsw[] = {
   .pr_ctlinput	= ah4_ctlinput,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
   .pr_sysctl	= ah_sysctl
 },
 {
@@ -318,8 +309,7 @@ const struct protosw inetsw[] = {
   .pr_ctlinput	= esp4_ctlinput,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
   .pr_sysctl	= esp_sysctl
 },
 {
@@ -330,8 +320,7 @@ const struct protosw inetsw[] = {
   .pr_input	= ipcomp46_input,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
   .pr_sysctl	= ipcomp_sysctl
 },
 #endif /* IPSEC */
@@ -344,8 +333,7 @@ const struct protosw inetsw[] = {
   .pr_input	= gre_input,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= gre_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &gre_usrreqs,
   .pr_sysctl	= gre_sysctl
 },
 #endif /* NGRE > 0 */
@@ -358,8 +346,7 @@ const struct protosw inetsw[] = {
   .pr_input	= carp_proto_input,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
   .pr_sysctl	= carp_sysctl
 },
 #endif /* NCARP > 0 */
@@ -372,8 +359,7 @@ const struct protosw inetsw[] = {
   .pr_input	= pfsync_input,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
   .pr_sysctl	= pfsync_sysctl
 },
 #endif /* NPFSYNC > 0 */
@@ -385,8 +371,7 @@ const struct protosw inetsw[] = {
   .pr_flags	= PR_ATOMIC|PR_ADDR,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= divert_usrreq,
-  .pr_attach	= divert_attach,
-  .pr_detach	= divert_detach,
+  .pr_usrreqs	= &divert_usrreqs,
   .pr_init	= divert_init,
   .pr_sysctl	= divert_sysctl
 },
@@ -400,8 +385,7 @@ const struct protosw inetsw[] = {
   .pr_input	= ip_etherip_input,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
   .pr_sysctl	= etherip_sysctl
 },
 #endif /* NETHERIP */
@@ -413,8 +397,7 @@ const struct protosw inetsw[] = {
   .pr_input	= rip_input,
   .pr_ctloutput	= rip_ctloutput,
   .pr_usrreq	= rip_usrreq,
-  .pr_attach	= rip_attach,
-  .pr_detach	= rip_detach,
+  .pr_usrreqs	= &rip_usrreqs,
   .pr_init	= rip_init
 }
 };
diff --git a/sys/netinet/ip_divert.c b/sys/netinet/ip_divert.c
index dea2b6d4d1f..d99c6dde5be 100644
--- a/sys/netinet/ip_divert.c
+++ b/sys/netinet/ip_divert.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip_divert.c,v 1.64 2020/11/16 06:38:20 gnezdo Exp $ */
+/*      $OpenBSD: ip_divert.c,v 1.65 2022/02/25 08:36:01 guenther Exp $ */
 
 /*
  * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
@@ -41,6 +41,9 @@
 
 #include <net/pfvar.h>
 
+int	divert_attach(struct socket *, int);
+int	divert_detach(struct socket *);
+
 struct	inpcbtable	divbtable;
 struct	cpumem		*divcounters;
 
@@ -243,11 +246,6 @@ divert_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *addr,
 	struct inpcb *inp = sotoinpcb(so);
 	int error = 0;
 
-	if (req == PRU_CONTROL) {
-		return (in_control(so, (u_long)m, (caddr_t)addr,
-		    (struct ifnet *)control));
-	}
-
 	soassertlocked(so);
 
 	if (inp == NULL) {
@@ -346,6 +344,12 @@ divert_detach(struct socket *so)
 	return (0);
 }
 
+const struct pr_usrreqs divert_usrreqs = {
+	.pru_attach    = divert_attach,
+	.pru_detach    = divert_detach,
+	.pru_control   = in_control,
+};
+
 int
 divert_sysctl_divstat(void *oldp, size_t *oldlenp, void *newp)
 {
diff --git a/sys/netinet/ip_divert.h b/sys/netinet/ip_divert.h
index 8a6924e7147..3062c7eb72e 100644
--- a/sys/netinet/ip_divert.h
+++ b/sys/netinet/ip_divert.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip_divert.h,v 1.12 2020/08/24 16:00:31 gnezdo Exp $ */
+/*      $OpenBSD: ip_divert.h,v 1.13 2022/02/25 08:36:01 guenther Exp $ */
 
 /*
  * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
@@ -70,7 +70,7 @@ int	 divert_packet(struct mbuf *, int, u_int16_t);
 int	 divert_sysctl(int *, u_int, void *, size_t *, void *, size_t);
 int	 divert_usrreq(struct socket *,
 	    int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *);
-int	 divert_attach(struct socket *, int);
-int	 divert_detach(struct socket *);
+
+extern const struct pr_usrreqs divert_usrreqs;
 #endif /* _KERNEL */
 #endif /* _IP_DIVERT_H_ */
diff --git a/sys/netinet/ip_gre.c b/sys/netinet/ip_gre.c
index 147ab23ccea..0e7e2643931 100644
--- a/sys/netinet/ip_gre.c
+++ b/sys/netinet/ip_gre.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip_gre.c,v 1.71 2018/02/07 22:30:59 dlg Exp $ */
+/*      $OpenBSD: ip_gre.c,v 1.72 2022/02/25 08:36:01 guenther Exp $ */
 /*	$NetBSD: ip_gre.c,v 1.9 1999/10/25 19:18:11 drochner Exp $ */
 
 /*
@@ -92,4 +92,9 @@ gre_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 #endif
 	return rip_usrreq(so, req, m, nam, control, p);
 }
+
+const struct pr_usrreqs gre_usrreqs = {
+	.pru_attach	= rip_attach,
+	.pru_detach	= rip_detach,
+};
 #endif /* if NGRE > 0 */
diff --git a/sys/netinet/ip_gre.h b/sys/netinet/ip_gre.h
index 8c5f742d145..033ca8684e7 100644
--- a/sys/netinet/ip_gre.h
+++ b/sys/netinet/ip_gre.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip_gre.h,v 1.14 2019/11/04 23:52:28 dlg Exp $ */
+/*      $OpenBSD: ip_gre.h,v 1.15 2022/02/25 08:36:01 guenther Exp $ */
 /*	$NetBSD: ip_gre.h,v 1.3 1998/10/07 23:33:02 thorpej Exp $ */
 
 /*
@@ -54,5 +54,7 @@
 
 #ifdef _KERNEL
 int     gre_usrreq(struct socket *, int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *);
+
+extern const struct pr_usrreqs gre_usrreqs;
 #endif /* _KERNEL */
 #endif /* _NETINET_IP_GRE_H_ */
diff --git a/sys/netinet/ip_var.h b/sys/netinet/ip_var.h
index e2269e4892d..fb621024127 100644
--- a/sys/netinet/ip_var.h
+++ b/sys/netinet/ip_var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_var.h,v 1.88 2021/03/30 08:37:11 sashan Exp $	*/
+/*	$OpenBSD: ip_var.h,v 1.89 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: ip_var.h,v 1.16 1996/02/13 23:43:20 christos Exp $	*/
 
 /*
@@ -261,6 +261,9 @@ int	 rip_usrreq(struct socket *,
 	    int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *);
 int	 rip_attach(struct socket *, int);
 int	 rip_detach(struct socket *);
+
+extern const struct pr_usrreqs rip_usrreqs;
+
 #ifdef MROUTING
 extern struct socket *ip_mrouter[];	/* multicast routing daemon */
 #endif
diff --git a/sys/netinet/raw_ip.c b/sys/netinet/raw_ip.c
index 9e1c0d1df37..46724bb97cd 100644
--- a/sys/netinet/raw_ip.c
+++ b/sys/netinet/raw_ip.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: raw_ip.c,v 1.119 2019/02/04 21:40:52 bluhm Exp $	*/
+/*	$OpenBSD: raw_ip.c,v 1.120 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: raw_ip.c,v 1.25 1996/02/18 18:58:33 christos Exp $	*/
 
 /*
@@ -432,10 +432,6 @@ rip_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 	struct inpcb *inp;
 	int error = 0;
 
-	if (req == PRU_CONTROL)
-		return (in_control(so, (u_long)m, (caddr_t)nam,
-		    (struct ifnet *)control));
-
 	soassertlocked(so);
 
 	inp = sotoinpcb(so);
@@ -617,3 +613,9 @@ rip_detach(struct socket *so)
 
 	return (0);
 }
+
+const struct pr_usrreqs rip_usrreqs = {
+	.pru_attach	= rip_attach,
+	.pru_detach	= rip_detach,
+	.pru_control	= in_control,
+};
diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c
index 98d2270d8f4..945b4299edb 100644
--- a/sys/netinet/tcp_usrreq.c
+++ b/sys/netinet/tcp_usrreq.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tcp_usrreq.c,v 1.181 2021/04/30 13:52:48 bluhm Exp $	*/
+/*	$OpenBSD: tcp_usrreq.c,v 1.182 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: tcp_usrreq.c,v 1.20 1996/02/13 23:44:16 christos Exp $	*/
 
 /*
@@ -100,6 +100,9 @@
 #include <netinet6/in6_var.h>
 #endif
 
+int	tcp_attach(struct socket *, int);
+int	tcp_detach(struct socket *);
+
 #ifndef TCP_SENDSPACE
 #define	TCP_SENDSPACE	1024*16
 #endif
@@ -149,17 +152,6 @@ tcp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 	int error = 0;
 	short ostate;
 
-	if (req == PRU_CONTROL) {
-#ifdef INET6
-		if (sotopf(so) == PF_INET6)
-			return in6_control(so, (u_long)m, (caddr_t)nam,
-			    (struct ifnet *)control);
-		else
-#endif /* INET6 */
-			return (in_control(so, (u_long)m, (caddr_t)nam,
-			    (struct ifnet *)control));
-	}
-
 	soassertlocked(so);
 
 	if (control && control->m_len) {
@@ -669,6 +661,19 @@ tcp_detach(struct socket *so)
 	return (error);
 }
 
+const struct pr_usrreqs tcp_usrreqs = {
+	.pru_attach	= tcp_attach,
+	.pru_detach	= tcp_detach,
+	.pru_control	= in_control,
+};
+#ifdef INET6
+const struct pr_usrreqs tcp6_usrreqs = {
+	.pru_attach	= tcp_attach,
+	.pru_detach	= tcp_detach,
+	.pru_control	= in6_control,
+};
+#endif
+
 /*
  * Initiate (or continue) disconnect.
  * If embryonic state, just send reset (once).
diff --git a/sys/netinet/tcp_var.h b/sys/netinet/tcp_var.h
index 22288cbe679..927ad2b3fcf 100644
--- a/sys/netinet/tcp_var.h
+++ b/sys/netinet/tcp_var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tcp_var.h,v 1.137 2022/01/23 21:44:31 bluhm Exp $	*/
+/*	$OpenBSD: tcp_var.h,v 1.138 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: tcp_var.h,v 1.17 1996/02/13 23:44:24 christos Exp $	*/
 
 /*
@@ -703,8 +703,6 @@ struct tcpcb *
 int	 tcp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
 int	 tcp_usrreq(struct socket *,
 	    int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *);
-int	 tcp_attach(struct socket *, int);
-int	 tcp_detach(struct socket *);
 void	 tcp_xmit_timer(struct tcpcb *, int);
 void	 tcpdropoldhalfopen(struct tcpcb *, u_int16_t);
 void	 tcp_sack_option(struct tcpcb *,struct tcphdr *,u_char *,int);
@@ -738,5 +736,10 @@ tcp_trace(short act, short ostate, struct tcpcb *tp, struct tcpcb *otp,
 }
 #endif
 
+extern const struct pr_usrreqs tcp_usrreqs;
+#ifdef INET6
+extern const struct pr_usrreqs tcp6_usrreqs;
+#endif
+
 #endif /* _KERNEL */
 #endif /* _NETINET_TCP_VAR_H_ */
diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
index 2b2bf9acbfb..3e2f2a1a34a 100644
--- a/sys/netinet/udp_usrreq.c
+++ b/sys/netinet/udp_usrreq.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: udp_usrreq.c,v 1.269 2022/02/16 01:25:45 dlg Exp $	*/
+/*	$OpenBSD: udp_usrreq.c,v 1.270 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: udp_usrreq.c,v 1.28 1996/03/16 23:54:03 christos Exp $	*/
 
 /*
@@ -112,6 +112,9 @@
 #include <net/pipex.h>
 #endif
 
+int	udp_attach(struct socket *, int);
+int	udp_detach(struct socket *);
+
 /*
  * UDP protocol implementation.
  * Per RFC 768, August, 1980.
@@ -1027,17 +1030,6 @@ udp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *addr,
 	struct inpcb *inp;
 	int error = 0;
 
-	if (req == PRU_CONTROL) {
-#ifdef INET6
-		if (sotopf(so) == PF_INET6)
-			return (in6_control(so, (u_long)m, (caddr_t)addr,
-			    (struct ifnet *)control));
-		else
-#endif /* INET6 */
-			return (in_control(so, (u_long)m, (caddr_t)addr,
-			    (struct ifnet *)control));
-	}
-
 	soassertlocked(so);
 
 	inp = sotoinpcb(so);
@@ -1250,6 +1242,19 @@ udp_detach(struct socket *so)
 	return (0);
 }
 
+const struct pr_usrreqs udp_usrreqs = {
+	.pru_attach	= udp_attach,
+	.pru_detach	= udp_detach,
+	.pru_control	= in_control,
+};
+#ifdef INET6
+const struct pr_usrreqs udp6_usrreqs = {
+	.pru_attach	= udp_attach,
+	.pru_detach	= udp_detach,
+	.pru_control	= in6_control,
+};
+#endif
+
 /*
  * Sysctl for udp variables.
  */
diff --git a/sys/netinet/udp_var.h b/sys/netinet/udp_var.h
index 337542a3f10..aa1eeba09c4 100644
--- a/sys/netinet/udp_var.h
+++ b/sys/netinet/udp_var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: udp_var.h,v 1.35 2020/08/22 17:54:57 gnezdo Exp $	*/
+/*	$OpenBSD: udp_var.h,v 1.36 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: udp_var.h,v 1.12 1996/02/13 23:44:41 christos Exp $	*/
 
 /*
@@ -139,7 +139,10 @@ int	 udp6_output(struct inpcb *, struct mbuf *, struct mbuf *,
 int	 udp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
 int	 udp_usrreq(struct socket *,
 	    int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *);
-int	 udp_attach(struct socket *, int);
-int	 udp_detach(struct socket *);
+
+extern const struct pr_usrreqs udp_usrreqs;
+#ifdef INET6
+extern const struct pr_usrreqs udp6_usrreqs;
+#endif
 #endif /* _KERNEL */
 #endif /* _NETINET_UDP_VAR_H_ */
diff --git a/sys/netinet6/in6_proto.c b/sys/netinet6/in6_proto.c
index 7945b95a4b9..8e523d13404 100644
--- a/sys/netinet6/in6_proto.c
+++ b/sys/netinet6/in6_proto.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: in6_proto.c,v 1.107 2022/02/22 01:35:41 guenther Exp $	*/
+/*	$OpenBSD: in6_proto.c,v 1.108 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$KAME: in6_proto.c,v 1.66 2000/10/10 15:35:47 itojun Exp $	*/
 
 /*
@@ -141,8 +141,7 @@ const struct protosw inet6sw[] = {
   .pr_ctlinput	= udp6_ctlinput,
   .pr_ctloutput	= ip6_ctloutput,
   .pr_usrreq	= udp_usrreq,
-  .pr_attach	= udp_attach,
-  .pr_detach	= udp_detach,
+  .pr_usrreqs	= &udp6_usrreqs,
   .pr_sysctl	= udp_sysctl
 },
 {
@@ -154,8 +153,7 @@ const struct protosw inet6sw[] = {
   .pr_ctlinput	= tcp6_ctlinput,
   .pr_ctloutput	= tcp_ctloutput,
   .pr_usrreq	= tcp_usrreq,
-  .pr_attach	= tcp_attach,
-  .pr_detach	= tcp_detach,
+  .pr_usrreqs	= &tcp6_usrreqs,
   .pr_sysctl	= tcp_sysctl
 },
 {
@@ -167,8 +165,7 @@ const struct protosw inet6sw[] = {
   .pr_ctlinput	= rip6_ctlinput,
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
   .pr_sysctl	= rip6_sysctl
 },
 {
@@ -180,8 +177,7 @@ const struct protosw inet6sw[] = {
   .pr_ctlinput	= rip6_ctlinput,
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
   .pr_init	= icmp6_init,
   .pr_fasttimo	= icmp6_fasttimo,
   .pr_sysctl	= icmp6_sysctl
@@ -216,8 +212,7 @@ const struct protosw inet6sw[] = {
   .pr_input	= ah46_input,
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
   .pr_sysctl	= ah_sysctl
 },
 {
@@ -228,8 +223,7 @@ const struct protosw inet6sw[] = {
   .pr_input	= esp46_input,
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
   .pr_sysctl	= esp_sysctl
 },
 {
@@ -240,8 +234,7 @@ const struct protosw inet6sw[] = {
   .pr_input	= ipcomp46_input,
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
   .pr_sysctl	= ipcomp_sysctl
 },
 #endif /* IPSEC */
@@ -257,8 +250,7 @@ const struct protosw inet6sw[] = {
 #endif
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,	/* XXX */
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
 },
 {
   .pr_type	= SOCK_RAW,
@@ -272,8 +264,7 @@ const struct protosw inet6sw[] = {
 #endif
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,	/* XXX */
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
 },
 #if defined(MPLS) && NGIF > 0
 {
@@ -288,8 +279,7 @@ const struct protosw inet6sw[] = {
 #endif
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,	/* XXX */
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
 },
 #endif /* MPLS */
 #if NCARP > 0
@@ -301,8 +291,7 @@ const struct protosw inet6sw[] = {
   .pr_input	= carp6_proto_input,
   .pr_ctloutput = rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
   .pr_sysctl	= carp_sysctl
 },
 #endif /* NCARP */
@@ -314,8 +303,7 @@ const struct protosw inet6sw[] = {
   .pr_flags	= PR_ATOMIC|PR_ADDR,
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= divert6_usrreq,
-  .pr_attach	= divert6_attach,
-  .pr_detach	= divert6_detach,
+  .pr_usrreqs	= &divert6_usrreqs,
   .pr_init	= divert6_init,
   .pr_sysctl	= divert6_sysctl
 },
@@ -329,8 +317,7 @@ const struct protosw inet6sw[] = {
   .pr_input	= ip6_etherip_input,
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
 },
 #endif /* NETHERIP */
 #if NGRE > 0
@@ -342,8 +329,7 @@ const struct protosw inet6sw[] = {
   .pr_input	= gre_input6,
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
 },
 #endif /* NGRE */
 {
@@ -354,8 +340,7 @@ const struct protosw inet6sw[] = {
   .pr_input	= rip6_input,
   .pr_ctloutput	= rip6_ctloutput,
   .pr_usrreq	= rip6_usrreq,
-  .pr_attach	= rip6_attach,
-  .pr_detach	= rip6_detach,
+  .pr_usrreqs	= &rip6_usrreqs,
   .pr_init	= rip6_init
 }
 };
diff --git a/sys/netinet6/ip6_divert.c b/sys/netinet6/ip6_divert.c
index 7a92eb2b928..fc83232dde1 100644
--- a/sys/netinet6/ip6_divert.c
+++ b/sys/netinet6/ip6_divert.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip6_divert.c,v 1.63 2020/11/16 06:38:20 gnezdo Exp $ */
+/*      $OpenBSD: ip6_divert.c,v 1.64 2022/02/25 08:36:01 guenther Exp $ */
 
 /*
  * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
@@ -42,6 +42,9 @@
 
 #include <net/pfvar.h>
 
+int	divert6_attach(struct socket *, int);
+int	divert6_detach(struct socket *);
+
 struct	inpcbtable	divb6table;
 struct	cpumem		*div6counters;
 
@@ -248,11 +251,6 @@ divert6_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *addr,
 	struct inpcb *inp = sotoinpcb(so);
 	int error = 0;
 
-	if (req == PRU_CONTROL) {
-		return (in6_control(so, (u_long)m, (caddr_t)addr,
-		    (struct ifnet *)control));
-	}
-
 	soassertlocked(so);
 
 	if (inp == NULL) {
@@ -352,6 +350,12 @@ divert6_detach(struct socket *so)
 	return (0);
 }
 
+const struct pr_usrreqs divert6_usrreqs = {
+	.pru_attach	= divert6_attach,
+	.pru_detach	= divert6_detach,
+	.pru_control	= in6_control,
+};
+
 int
 divert6_sysctl_div6stat(void *oldp, size_t *oldlenp, void *newp)
 {
diff --git a/sys/netinet6/ip6_divert.h b/sys/netinet6/ip6_divert.h
index 8a463970485..51b524069b5 100644
--- a/sys/netinet6/ip6_divert.h
+++ b/sys/netinet6/ip6_divert.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip6_divert.h,v 1.10 2020/08/24 16:00:31 gnezdo Exp $ */
+/*      $OpenBSD: ip6_divert.h,v 1.11 2022/02/25 08:36:01 guenther Exp $ */
 
 /*
  * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
@@ -70,8 +70,8 @@ int	 divert6_packet(struct mbuf *, int, u_int16_t);
 int	 divert6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
 int	 divert6_usrreq(struct socket *,
 	    int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *);
-int	 divert6_attach(struct socket *, int);
-int	 divert6_detach(struct socket *);
+
+extern const struct pr_usrreqs divert6_usrreqs;
 #endif /* _KERNEL */
 
 #endif /* _IP6_DIVERT_H_ */
diff --git a/sys/netinet6/ip6_var.h b/sys/netinet6/ip6_var.h
index 4b99f9e9f10..a3c86ef4519 100644
--- a/sys/netinet6/ip6_var.h
+++ b/sys/netinet6/ip6_var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip6_var.h,v 1.89 2021/12/01 12:51:09 bluhm Exp $	*/
+/*	$OpenBSD: ip6_var.h,v 1.90 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$KAME: ip6_var.h,v 1.33 2000/06/11 14:59:20 jinmei Exp $	*/
 
 /*
@@ -348,8 +348,6 @@ int	rip6_output(struct mbuf *, struct socket *, struct sockaddr *,
 	    struct mbuf *);
 int	rip6_usrreq(struct socket *,
 	    int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *);
-int	rip6_attach(struct socket *, int);
-int	rip6_detach(struct socket *);
 int	rip6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
 
 int	dest6_input(struct mbuf **, int *, int, int);
@@ -371,6 +369,8 @@ int	ip6_output_ipsec_send(struct tdb *, struct mbuf *, struct route_in6 *,
 	    int, int);
 #endif /* IPSEC */
 
+extern const struct pr_usrreqs rip6_usrreqs;
+
 #endif /* _KERNEL */
 
 #endif /* !_NETINET6_IP6_VAR_H_ */
diff --git a/sys/netinet6/raw_ip6.c b/sys/netinet6/raw_ip6.c
index 193c575c4aa..5f31d59c8ca 100644
--- a/sys/netinet6/raw_ip6.c
+++ b/sys/netinet6/raw_ip6.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: raw_ip6.c,v 1.139 2022/02/21 11:43:02 jsg Exp $	*/
+/*	$OpenBSD: raw_ip6.c,v 1.140 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$KAME: raw_ip6.c,v 1.69 2001/03/04 15:55:44 itojun Exp $	*/
 
 /*
@@ -97,6 +97,9 @@
 
 #include <sys/stdarg.h>
 
+int	rip6_attach(struct socket *, int);
+int	rip6_detach(struct socket *);
+
 /*
  * Raw interface to IP6 protocol.
  */
@@ -559,10 +562,6 @@ rip6_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 	struct inpcb *in6p;
 	int error = 0;
 
-	if (req == PRU_CONTROL)
-		return (in6_control(so, (u_long)m, (caddr_t)nam,
-		    (struct ifnet *)control));
-
 	soassertlocked(so);
 
 	in6p = sotoinpcb(so);
@@ -766,6 +765,12 @@ rip6_detach(struct socket *so)
 	return (0);
 }
 
+const struct pr_usrreqs rip6_usrreqs = {
+	.pru_attach	= rip6_attach,
+	.pru_detach	= rip6_detach,
+	.pru_control	= in6_control,
+};
+
 int
 rip6_sysctl_rip6stat(void *oldp, size_t *oldplen, void *newp)
 {
diff --git a/sys/sys/protosw.h b/sys/sys/protosw.h
index f578f6ae0ff..c7feca678e8 100644
--- a/sys/sys/protosw.h
+++ b/sys/sys/protosw.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: protosw.h,v 1.33 2022/02/22 01:02:57 guenther Exp $	*/
+/*	$OpenBSD: protosw.h,v 1.34 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: protosw.h,v 1.10 1996/04/09 20:55:32 cgd Exp $	*/
 
 /*-
@@ -58,6 +58,7 @@ struct sockaddr;
 struct socket;
 struct domain;
 struct proc;
+struct pr_usrreqs;
 
 struct protosw {
 	short	pr_type;		/* socket type used for */
@@ -80,9 +81,7 @@ struct protosw {
 					/* user request: see list below */
 	int	(*pr_usrreq)(struct socket *, int, struct mbuf *,
 		    struct mbuf *, struct mbuf *, struct proc *);
-
-	int	(*pr_attach)(struct socket *, int);
-	int	(*pr_detach)(struct socket *);
+	const struct pr_usrreqs *pr_usrreqs;
 
 /* utility hooks */
 	void	(*pr_init)(void);	/* initialization hook */
@@ -227,7 +226,15 @@ char	*prcorequests[] = {
 #endif
 
 #ifdef _KERNEL
-struct sockaddr;
+struct ifnet;
+
+struct pr_usrreqs {
+	int	(*pru_attach)(struct socket *, int _proto);
+	int	(*pru_detach)(struct socket *);
+	int	(*pru_control)(struct socket *, u_long _cmd, caddr_t _data,
+		    struct ifnet *_ifp);
+};
+
 const struct protosw *pffindproto(int, int, int);
 const struct protosw *pffindtype(int, int);
 void pfctlinput(int, struct sockaddr *);
diff --git a/sys/sys/unpcb.h b/sys/sys/unpcb.h
index b8afbb47514..156aa3c538c 100644
--- a/sys/sys/unpcb.h
+++ b/sys/sys/unpcb.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: unpcb.h,v 1.23 2022/01/11 23:59:55 jsg Exp $	*/
+/*	$OpenBSD: unpcb.h,v 1.24 2022/02/25 08:36:01 guenther Exp $	*/
 /*	$NetBSD: unpcb.h,v 1.6 1994/06/29 06:46:08 cgd Exp $	*/
 
 /*
@@ -120,4 +120,6 @@ void	unp_shutdown(struct unpcb *);
 int 	unp_externalize(struct mbuf *, socklen_t, int);
 int	unp_internalize(struct mbuf *, struct proc *);
 void 	unp_dispose(struct mbuf *);
+
+extern const struct pr_usrreqs uipc_usrreqs;
 #endif /* _KERNEL */