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@

1 files changed, 2 insertions, 1 deletions

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);