Move PRU_ABORT request to (*pru_abort)().

We abort only the sockets which are linked to `so_q' or `so_q0' queues of
listening socket. Such sockets have no corresponding file descriptor and
are not accessed from userland, so PRU_ABORT used to destroy them on
listening socket destruction.

Currently all our sockets support PRU_ABORT request, but actually it
required only for tcp(4) and unix(4) sockets, so i should be optional.
However, they will be removed with separate diff, and this time  PRU_ABORT
requests were converted as is.

Also, the socket should be destroyed on PRU_ABORT request, but route and
key management sockets leave it alive. This was also converted as is,
because this wrong code never called.

ok bluhm@

18 files changed, 166 insertions, 78 deletions

diff --git a/sys/kern/uipc_usrreq.c b/sys/kern/uipc_usrreq.c
index 2dbbabf689f..93a49040a42 100644
--- a/sys/kern/uipc_usrreq.c
+++ b/sys/kern/uipc_usrreq.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uipc_usrreq.c,v 1.176 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: uipc_usrreq.c,v 1.177 2022/08/28 18:44:16 mvs Exp $	*/
 /*	$NetBSD: uipc_usrreq.c,v 1.18 1996/02/09 19:00:50 christos Exp $	*/
 
 /*
@@ -138,6 +138,7 @@ const struct pr_usrreqs uipc_usrreqs = {
 	.pru_shutdown	= uipc_shutdown,
 	.pru_rcvd	= uipc_rcvd,
 	.pru_send	= uipc_send,
+	.pru_abort	= uipc_abort,
 };
 
 void
@@ -245,11 +246,6 @@ uipc_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 		}
 		break;
 
-	case PRU_ABORT:
-		unp_detach(unp);
-		sofree(so, 0);
-		break;
-
 	case PRU_SENSE: {
 		struct stat *sb = (struct stat *)m;
 
@@ -591,6 +587,17 @@ out:
 }
 
 int
+uipc_abort(struct socket *so)
+{
+	struct unpcb *unp = sotounpcb(so);
+
+	unp_detach(unp);
+	sofree(so, 0);
+
+	return (0);
+}
+
+int
 uipc_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
     size_t newlen)
 {
diff --git a/sys/net/pfkeyv2.c b/sys/net/pfkeyv2.c
index 995fb51036f..df2daf9283d 100644
--- a/sys/net/pfkeyv2.c
+++ b/sys/net/pfkeyv2.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: pfkeyv2.c,v 1.243 2022/08/27 20:28:01 mvs Exp $ */
+/* $OpenBSD: pfkeyv2.c,v 1.244 2022/08/28 18:44:16 mvs Exp $ */
 
 /*
  *	@(#)COPYRIGHT	1.1 (NRL) 17 January 1995
@@ -175,6 +175,7 @@ int pfkeyv2_disconnect(struct socket *);
 int pfkeyv2_shutdown(struct socket *);
 int pfkeyv2_send(struct socket *, struct mbuf *, struct mbuf *,
     struct mbuf *);
+int pfkeyv2_abort(struct socket *);
 int pfkeyv2_usrreq(struct socket *, int, struct mbuf *, struct mbuf *,
     struct mbuf *, struct proc *);
 int pfkeyv2_output(struct mbuf *, struct socket *, struct sockaddr *,
@@ -210,6 +211,7 @@ const struct pr_usrreqs pfkeyv2_usrreqs = {
 	.pru_disconnect	= pfkeyv2_disconnect,
 	.pru_shutdown	= pfkeyv2_shutdown,
 	.pru_send	= pfkeyv2_send,
+	.pru_abort	= pfkeyv2_abort,
 };
 
 const struct protosw pfkeysw[] = {
@@ -382,6 +384,13 @@ out:
 }
 
 int
+pfkeyv2_abort(struct socket *so)
+{
+	soisdisconnected(so);
+	return (0);
+}
+
+int
 pfkeyv2_usrreq(struct socket *so, int req, struct mbuf *m,
     struct mbuf *nam, struct mbuf *control, struct proc *p)
 {
@@ -410,9 +419,6 @@ pfkeyv2_usrreq(struct socket *so, int req, struct mbuf *m,
 		error = EOPNOTSUPP;
 		break;
 
-	case PRU_ABORT:
-		soisdisconnected(so);
-		break;
 	case PRU_SENSE:
 		/* stat: don't bother with a blocksize. */
 		break;
diff --git a/sys/net/rtsock.c b/sys/net/rtsock.c
index 19c77bd8538..2d8cb44e614 100644
--- a/sys/net/rtsock.c
+++ b/sys/net/rtsock.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: rtsock.c,v 1.343 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: rtsock.c,v 1.344 2022/08/28 18:44:16 mvs Exp $	*/
 /*	$NetBSD: rtsock.c,v 1.18 1996/03/29 00:32:10 cgd Exp $	*/
 
 /*
@@ -119,6 +119,7 @@ int	route_shutdown(struct socket *);
 int	route_rcvd(struct socket *);
 int	route_send(struct socket *, struct mbuf *, struct mbuf *,
 	    struct mbuf *);
+int	route_abort(struct socket *);
 void	route_input(struct mbuf *m0, struct socket *, sa_family_t);
 int	route_arp_conflict(struct rtentry *, struct rt_addrinfo *);
 int	route_cleargateway(struct rtentry *, void *, unsigned int);
@@ -242,9 +243,6 @@ route_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 		error = EOPNOTSUPP;
 		break;
 
-	case PRU_ABORT:
-		soisdisconnected(so);
-		break;
 	case PRU_SENSE:
 		/* stat: don't bother with a blocksize. */
 		break;
@@ -406,6 +404,13 @@ out:
 }
 
 int
+route_abort(struct socket *so)
+{
+	soisdisconnected(so);
+	return (0);
+}
+
+int
 route_ctloutput(int op, struct socket *so, int level, int optname,
     struct mbuf *m)
 {
@@ -2448,6 +2453,7 @@ const struct pr_usrreqs route_usrreqs = {
 	.pru_shutdown	= route_shutdown,
 	.pru_rcvd	= route_rcvd,
 	.pru_send	= route_send,
+	.pru_abort	= route_abort,
 };
 
 const struct protosw routesw[] = {
diff --git a/sys/netinet/ip_divert.c b/sys/netinet/ip_divert.c
index 11583387f61..dffb8e8477b 100644
--- a/sys/netinet/ip_divert.c
+++ b/sys/netinet/ip_divert.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip_divert.c,v 1.78 2022/08/27 20:28:01 mvs Exp $ */
+/*      $OpenBSD: ip_divert.c,v 1.79 2022/08/28 18:44:16 mvs Exp $ */
 
 /*
  * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
@@ -69,6 +69,7 @@ const struct pr_usrreqs divert_usrreqs = {
 	.pru_bind	= divert_bind,
 	.pru_shutdown	= divert_shutdown,
 	.pru_send	= divert_send,
+	.pru_abort	= divert_abort,
 };
 
 int divbhashsize = DIVERTHASHSIZE;
@@ -270,11 +271,6 @@ divert_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *addr,
 	}
 	switch (req) {
 
-	case PRU_ABORT:
-		soisdisconnected(so);
-		in_pcbdetach(inp);
-		break;
-
 	case PRU_SOCKADDR:
 		in_setsockaddr(inp, addr);
 		break;
@@ -372,6 +368,19 @@ divert_send(struct socket *so, struct mbuf *m, struct mbuf *addr,
 }
 
 int
+divert_abort(struct socket *so)
+{
+	struct inpcb *inp = sotoinpcb(so);
+
+	soassertlocked(so);
+
+	soisdisconnected(so);
+	in_pcbdetach(inp);
+
+	return (0);
+}
+
+int
 divert_sysctl_divstat(void *oldp, size_t *oldlenp, void *newp)
 {
 	uint64_t counters[divs_ncounters];
diff --git a/sys/netinet/ip_divert.h b/sys/netinet/ip_divert.h
index 020f2ae2ef1..004047b9403 100644
--- a/sys/netinet/ip_divert.h
+++ b/sys/netinet/ip_divert.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip_divert.h,v 1.19 2022/08/27 20:28:01 mvs Exp $ */
+/*      $OpenBSD: ip_divert.h,v 1.20 2022/08/28 18:44:16 mvs Exp $ */
 
 /*
  * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
@@ -78,5 +78,6 @@ int	 divert_bind(struct socket *, struct mbuf *, struct proc *);
 int	 divert_shutdown(struct socket *);
 int	 divert_send(struct socket *, struct mbuf *, struct mbuf *,
 	     struct mbuf *);
+int	 divert_abort(struct socket *);
 #endif /* _KERNEL */
 #endif /* _IP_DIVERT_H_ */
diff --git a/sys/netinet/ip_gre.c b/sys/netinet/ip_gre.c
index 55a853f45f8..588a51ff8cf 100644
--- a/sys/netinet/ip_gre.c
+++ b/sys/netinet/ip_gre.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip_gre.c,v 1.80 2022/08/27 20:28:01 mvs Exp $ */
+/*      $OpenBSD: ip_gre.c,v 1.81 2022/08/28 18:44:16 mvs Exp $ */
 /*	$NetBSD: ip_gre.c,v 1.9 1999/10/25 19:18:11 drochner Exp $ */
 
 /*
@@ -70,6 +70,7 @@ const struct pr_usrreqs gre_usrreqs = {
 	.pru_disconnect	= rip_disconnect,
 	.pru_shutdown	= rip_shutdown,
 	.pru_send	= gre_send,
+	.pru_abort	= rip_abort,
 };
 
 int
diff --git a/sys/netinet/ip_var.h b/sys/netinet/ip_var.h
index d96d55fa5b9..89a53ccd43e 100644
--- a/sys/netinet/ip_var.h
+++ b/sys/netinet/ip_var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_var.h,v 1.102 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: ip_var.h,v 1.103 2022/08/28 18:44:16 mvs Exp $	*/
 /*	$NetBSD: ip_var.h,v 1.16 1996/02/13 23:43:20 christos Exp $	*/
 
 /*
@@ -266,6 +266,7 @@ int	 rip_disconnect(struct socket *);
 int	 rip_shutdown(struct socket *);
 int	 rip_send(struct socket *, struct mbuf *, struct mbuf *,
 	     struct mbuf *);
+int	 rip_abort(struct socket *);
 #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 958c5dddbb2..14d8b23e06c 100644
--- a/sys/netinet/raw_ip.c
+++ b/sys/netinet/raw_ip.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: raw_ip.c,v 1.139 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: raw_ip.c,v 1.140 2022/08/28 18:44:16 mvs Exp $	*/
 /*	$NetBSD: raw_ip.c,v 1.25 1996/02/18 18:58:33 christos Exp $	*/
 
 /*
@@ -112,6 +112,7 @@ const struct pr_usrreqs rip_usrreqs = {
 	.pru_disconnect	= rip_disconnect,
 	.pru_shutdown	= rip_shutdown,
 	.pru_send	= rip_send,
+	.pru_abort	= rip_abort,
 };
 
 /*
@@ -477,17 +478,6 @@ rip_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 
 	switch (req) {
 
-	case PRU_ABORT:
-		soisdisconnected(so);
-		if (inp == NULL)
-			panic("rip_abort");
-#ifdef MROUTING
-		if (so == ip_mrouter[inp->inp_rtableid])
-			ip_mrouter_done(so);
-#endif
-		in_pcbdetach(inp);
-		break;
-
 	case PRU_CONNECT2:
 		error = EOPNOTSUPP;
 		break;
@@ -685,3 +675,19 @@ out:
 	return (error);
 }
 
+int
+rip_abort(struct socket *so)
+{
+	struct inpcb *inp = sotoinpcb(so);
+
+	soassertlocked(so);
+
+	soisdisconnected(so);
+#ifdef MROUTING
+	if (so == ip_mrouter[inp->inp_rtableid])
+		ip_mrouter_done(so);
+#endif
+	in_pcbdetach(inp);
+
+	return (0);
+}
diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c
index af327f2bd56..310caee591b 100644
--- a/sys/netinet/tcp_usrreq.c
+++ b/sys/netinet/tcp_usrreq.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tcp_usrreq.c,v 1.196 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: tcp_usrreq.c,v 1.197 2022/08/28 18:44:16 mvs Exp $	*/
 /*	$NetBSD: tcp_usrreq.c,v 1.20 1996/02/13 23:44:16 christos Exp $	*/
 
 /*
@@ -123,6 +123,7 @@ const struct pr_usrreqs tcp_usrreqs = {
 	.pru_shutdown	= tcp_shutdown,
 	.pru_rcvd	= tcp_rcvd,
 	.pru_send	= tcp_send,
+	.pru_abort	= tcp_abort,
 };
 
 static int pr_slowhz = PR_SLOWHZ;
@@ -226,13 +227,6 @@ tcp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 		error = EOPNOTSUPP;
 		break;
 
-	/*
-	 * Abort the TCP.
-	 */
-	case PRU_ABORT:
-		tp = tcp_drop(tp, ECONNABORTED);
-		break;
-
 	case PRU_SENSE:
 		((struct stat *) m)->st_blksize = so->so_snd.sb_hiwat;
 		break;
@@ -963,6 +957,34 @@ out:
 }
 
 /*
+ * Abort the TCP.
+ */
+int
+tcp_abort(struct socket *so)
+{
+	struct inpcb *inp;
+	struct tcpcb *tp, *otp = NULL;
+	int error;
+	short ostate;
+
+	soassertlocked(so);
+
+	if ((error = tcp_sogetpcb(so, &inp, &tp)))
+		return (error);
+
+	if (so->so_options & SO_DEBUG) {
+		otp = tp;
+		ostate = tp->t_state;
+	}
+
+	tp = tcp_drop(tp, ECONNABORTED);
+
+	if (otp)
+		tcp_trace(TA_USER, ostate, tp, otp, NULL, PRU_ABORT, 0);
+	return (0);
+}
+
+/*
  * Initiate (or continue) disconnect.
  * If embryonic state, just send reset (once).
  * If in ``let data drain'' option and linger null, just drop.
diff --git a/sys/netinet/tcp_var.h b/sys/netinet/tcp_var.h
index b07457c8613..516b3c478c8 100644
--- a/sys/netinet/tcp_var.h
+++ b/sys/netinet/tcp_var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tcp_var.h,v 1.149 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: tcp_var.h,v 1.150 2022/08/28 18:44:16 mvs Exp $	*/
 /*	$NetBSD: tcp_var.h,v 1.17 1996/02/13 23:44:24 christos Exp $	*/
 
 /*
@@ -723,6 +723,7 @@ int	 tcp_shutdown(struct socket *);
 int	 tcp_rcvd(struct socket *);
 int	 tcp_send(struct socket *, struct mbuf *, struct mbuf *,
 	     struct mbuf *);
+int	 tcp_abort(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);
diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
index a85645ed9be..3dd324f735a 100644
--- a/sys/netinet/udp_usrreq.c
+++ b/sys/netinet/udp_usrreq.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: udp_usrreq.c,v 1.291 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: udp_usrreq.c,v 1.292 2022/08/28 18:44:16 mvs Exp $	*/
 /*	$NetBSD: udp_usrreq.c,v 1.28 1996/03/16 23:54:03 christos Exp $	*/
 
 /*
@@ -131,6 +131,7 @@ const struct pr_usrreqs udp_usrreqs = {
 	.pru_disconnect	= udp_disconnect,
 	.pru_shutdown	= udp_shutdown,
 	.pru_send	= udp_send,
+	.pru_abort	= udp_abort,
 };
 
 const struct sysctl_bounded_args udpctl_vars[] = {
@@ -1087,11 +1088,6 @@ udp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *addr,
 		error = EOPNOTSUPP;
 		break;
 
-	case PRU_ABORT:
-		soisdisconnected(so);
-		in_pcbdetach(inp);
-		break;
-
 	case PRU_SOCKADDR:
 #ifdef INET6
 		if (inp->inp_flags & INP_IPV6)
@@ -1304,6 +1300,19 @@ udp_send(struct socket *so, struct mbuf *m, struct mbuf *addr,
 	return (error);
 }
 
+int
+udp_abort(struct socket *so)
+{
+	struct inpcb *inp = sotoinpcb(so);
+
+	soassertlocked(so);
+
+	soisdisconnected(so);
+	in_pcbdetach(inp);
+
+	return (0);
+}
+
 /*
  * Sysctl for udp variables.
  */
diff --git a/sys/netinet/udp_var.h b/sys/netinet/udp_var.h
index bdf2dff98b4..a564b799fc0 100644
--- a/sys/netinet/udp_var.h
+++ b/sys/netinet/udp_var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: udp_var.h,v 1.43 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: udp_var.h,v 1.44 2022/08/28 18:44:16 mvs Exp $	*/
 /*	$NetBSD: udp_var.h,v 1.12 1996/02/13 23:44:41 christos Exp $	*/
 
 /*
@@ -149,5 +149,6 @@ int	 udp_disconnect(struct socket *);
 int	 udp_shutdown(struct socket *);
 int	 udp_send(struct socket *, struct mbuf *, struct mbuf *,
 	     struct mbuf *);
+int	 udp_abort(struct socket *);
 #endif /* _KERNEL */
 #endif /* _NETINET_UDP_VAR_H_ */
diff --git a/sys/netinet6/ip6_divert.c b/sys/netinet6/ip6_divert.c
index b9617bab118..73019e5914f 100644
--- a/sys/netinet6/ip6_divert.c
+++ b/sys/netinet6/ip6_divert.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip6_divert.c,v 1.77 2022/08/27 20:28:01 mvs Exp $ */
+/*      $OpenBSD: ip6_divert.c,v 1.78 2022/08/28 18:44:17 mvs Exp $ */
 
 /*
  * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
@@ -70,6 +70,7 @@ const struct pr_usrreqs divert6_usrreqs = {
 	.pru_bind	= divert6_bind,
 	.pru_shutdown	= divert6_shutdown,
 	.pru_send	= divert6_send,
+	.pru_abort	= divert6_abort,
 };
 
 int divb6hashsize = DIVERTHASHSIZE;
@@ -276,11 +277,6 @@ divert6_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *addr,
 	}
 	switch (req) {
 
-	case PRU_ABORT:
-		soisdisconnected(so);
-		in_pcbdetach(inp);
-		break;
-
 	case PRU_SOCKADDR:
 		in6_setsockaddr(inp, addr);
 		break;
@@ -380,6 +376,18 @@ divert6_send(struct socket *so, struct mbuf *m, struct mbuf *addr,
 }
 
 int
+divert6_abort(struct socket *so)
+{
+	struct inpcb *inp = sotoinpcb(so);
+
+	soassertlocked(so);
+	soisdisconnected(so);
+	in_pcbdetach(inp);
+
+	return (0);
+}
+
+int
 divert6_sysctl_div6stat(void *oldp, size_t *oldlenp, void *newp)
 {
 	uint64_t counters[div6s_ncounters];
diff --git a/sys/netinet6/ip6_divert.h b/sys/netinet6/ip6_divert.h
index 0414661edcf..21884ac948e 100644
--- a/sys/netinet6/ip6_divert.h
+++ b/sys/netinet6/ip6_divert.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ip6_divert.h,v 1.17 2022/08/27 20:28:01 mvs Exp $ */
+/*      $OpenBSD: ip6_divert.h,v 1.18 2022/08/28 18:44:17 mvs Exp $ */
 
 /*
  * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
@@ -78,6 +78,7 @@ int	 divert6_bind(struct socket *, struct mbuf *, struct proc *);
 int	 divert6_shutdown(struct socket *);
 int	 divert6_send(struct socket *, struct mbuf *, struct mbuf *,
 	     struct mbuf *);
+int	 divert6_abort(struct socket *);
 #endif /* _KERNEL */
 
 #endif /* _IP6_DIVERT_H_ */
diff --git a/sys/netinet6/ip6_var.h b/sys/netinet6/ip6_var.h
index e24406f826e..ee560a02273 100644
--- a/sys/netinet6/ip6_var.h
+++ b/sys/netinet6/ip6_var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip6_var.h,v 1.100 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: ip6_var.h,v 1.101 2022/08/28 18:44:17 mvs Exp $	*/
 /*	$KAME: ip6_var.h,v 1.33 2000/06/11 14:59:20 jinmei Exp $	*/
 
 /*
@@ -361,6 +361,7 @@ int	rip6_disconnect(struct socket *);
 int	rip6_shutdown(struct socket *);
 int	rip6_send(struct socket *, struct mbuf *, struct mbuf *,
 	    struct mbuf *);
+int	rip6_abort(struct socket *);
 int	rip6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
 
 int	dest6_input(struct mbuf **, int *, int, int);
diff --git a/sys/netinet6/raw_ip6.c b/sys/netinet6/raw_ip6.c
index c1270d73c8a..20306191f8a 100644
--- a/sys/netinet6/raw_ip6.c
+++ b/sys/netinet6/raw_ip6.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: raw_ip6.c,v 1.159 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: raw_ip6.c,v 1.160 2022/08/28 18:44:17 mvs Exp $	*/
 /*	$KAME: raw_ip6.c,v 1.69 2001/03/04 15:55:44 itojun Exp $	*/
 
 /*
@@ -114,6 +114,7 @@ const struct pr_usrreqs rip6_usrreqs = {
 	.pru_disconnect	= rip6_disconnect,
 	.pru_shutdown	= rip6_shutdown,
 	.pru_send	= rip6_send,
+	.pru_abort	= rip6_abort,
 };
 
 /*
@@ -592,20 +593,6 @@ rip6_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 	}
 
 	switch (req) {
-	case PRU_ABORT:
-		soisdisconnected(so);
-		if (in6p == NULL)
-			panic("%s", __func__);
-#ifdef MROUTING
-		if (so == ip6_mrouter[in6p->inp_rtableid])
-			ip6_mrouter_done(so);
-#endif
-		free(in6p->inp_icmp6filt, M_PCB, sizeof(struct icmp6_filter));
-		in6p->inp_icmp6filt = NULL;
-
-		in_pcbdetach(in6p);
-		break;
-
 	case PRU_CONNECT2:
 		error = EOPNOTSUPP;
 		break;
@@ -820,6 +807,26 @@ out:
 }
 
 int
+rip6_abort(struct socket *so)
+{
+	struct inpcb *in6p = sotoinpcb(so);
+
+	soassertlocked(so);
+
+	soisdisconnected(so);
+#ifdef MROUTING
+	if (so == ip6_mrouter[in6p->inp_rtableid])
+		ip6_mrouter_done(so);
+#endif
+	free(in6p->inp_icmp6filt, M_PCB, sizeof(struct icmp6_filter));
+	in6p->inp_icmp6filt = NULL;
+
+	in_pcbdetach(in6p);
+
+	return (0);
+}
+
+int
 rip6_sysctl_rip6stat(void *oldp, size_t *oldplen, void *newp)
 {
 	struct rip6stat rip6stat;
diff --git a/sys/sys/protosw.h b/sys/sys/protosw.h
index cec2616288c..be609dea880 100644
--- a/sys/sys/protosw.h
+++ b/sys/sys/protosw.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: protosw.h,v 1.45 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: protosw.h,v 1.46 2022/08/28 18:44:17 mvs Exp $	*/
 /*	$NetBSD: protosw.h,v 1.10 1996/04/09 20:55:32 cgd Exp $	*/
 
 /*-
@@ -75,6 +75,7 @@ struct pr_usrreqs {
 	int	(*pru_rcvd)(struct socket *);
 	int	(*pru_send)(struct socket *, struct mbuf *, struct mbuf *,
 		    struct mbuf *);
+	int	(*pru_abort)(struct socket *);
 };
 
 struct protosw {
@@ -334,8 +335,7 @@ pru_send(struct socket *so, struct mbuf *top, struct mbuf *addr,
 static inline int
 pru_abort(struct socket *so)
 {
-	return (*so->so_proto->pr_usrreqs->pru_usrreq)(so,
-	    PRU_ABORT, NULL, NULL, NULL, curproc);
+	return (*so->so_proto->pr_usrreqs->pru_abort)(so);
 }
 
 static inline int
diff --git a/sys/sys/unpcb.h b/sys/sys/unpcb.h
index 4521ceb25ba..b4e46618688 100644
--- a/sys/sys/unpcb.h
+++ b/sys/sys/unpcb.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: unpcb.h,v 1.35 2022/08/27 20:28:01 mvs Exp $	*/
+/*	$OpenBSD: unpcb.h,v 1.36 2022/08/28 18:44:17 mvs Exp $	*/
 /*	$NetBSD: unpcb.h,v 1.6 1994/06/29 06:46:08 cgd Exp $	*/
 
 /*
@@ -122,6 +122,7 @@ int	uipc_shutdown(struct socket *);
 int	uipc_rcvd(struct socket *);
 int	uipc_send(struct socket *, struct mbuf *, struct mbuf *,
 	    struct mbuf *);
+int	uipc_abort(struct socket *);
 
 void	unp_init(void);
 int	unp_bind(struct unpcb *, struct mbuf *, struct proc *);