Merge IPv4 and IPv6 options in inpcb.

A internet PCB has either inp_options or inp_outputopts6.  Put them
into a common anonymous union.

OK mvs@ kn@

2 files changed, 9 insertions, 6 deletions

diff --git a/sys/netinet/in_pcb.c b/sys/netinet/in_pcb.c
index 958d8ea9be9..1a6bc7166ec 100644
--- a/sys/netinet/in_pcb.c
+++ b/sys/netinet/in_pcb.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: in_pcb.c,v 1.301 2024/04/17 20:48:51 bluhm Exp $	*/
+/*	$OpenBSD: in_pcb.c,v 1.302 2024/04/19 10:13:58 bluhm Exp $	*/
 /*	$NetBSD: in_pcb.c,v 1.25 1996/02/13 23:41:53 christos Exp $	*/
 
 /*
@@ -592,7 +592,6 @@ in_pcbdetach(struct inpcb *inp)
 	 * points.
 	 */
 	sofree(so, 1);
-	m_freem(inp->inp_options);
 	if (inp->inp_route.ro_rt) {
 		rtfree(inp->inp_route.ro_rt);
 		inp->inp_route.ro_rt = NULL;
@@ -603,8 +602,10 @@ in_pcbdetach(struct inpcb *inp)
 		ip6_freemoptions(inp->inp_moptions6);
 	} else
 #endif
+	{
+		m_freem(inp->inp_options);
 		ip_freemoptions(inp->inp_moptions);
-
+	}
 #if NPF > 0
 	pf_remove_divert_state(inp);
 	pf_inp_unlink(inp);
diff --git a/sys/netinet/in_pcb.h b/sys/netinet/in_pcb.h
index 60b3ae537e0..6e0b656b19f 100644
--- a/sys/netinet/in_pcb.h
+++ b/sys/netinet/in_pcb.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: in_pcb.h,v 1.156 2024/04/17 20:48:51 bluhm Exp $	*/
+/*	$OpenBSD: in_pcb.h,v 1.157 2024/04/19 10:13:58 bluhm Exp $	*/
 /*	$NetBSD: in_pcb.h,v 1.14 1996/02/13 23:42:00 christos Exp $	*/
 
 /*
@@ -157,8 +157,10 @@ struct inpcb {
 	} inp_hu;
 #define	inp_ip		inp_hu.hu_ip
 #define	inp_ipv6	inp_hu.hu_ipv6
-	struct	  mbuf *inp_options;	/* IP options */
-	struct ip6_pktopts *inp_outputopts6; /* IP6 options for outgoing packets */
+	union {
+		struct	mbuf *inp_options;		/* IPv4 options */
+		struct	ip6_pktopts *inp_outputopts6;	/* IPv6 options */
+	};
 	int inp_hops;
 	union {
 		struct ip_moptions *mou_mo;