From eccb7001eea93b6f78ce07e190eb8f162a7f352d Mon Sep 17 00:00:00 2001
From: Hajimu UMEMOTO <ume@FreeBSD.org>
Date: Thu, 25 Jul 2002 17:40:45 +0000
Subject: [PATCH] cleanup usage of ip6_mapped_addr_on and ip6_v6only. now,
 ip6_mapped_addr_on is unified into ip6_v6only.

MFC after:	1 week
---
 sys/netinet/in_pcb.c       | 2 +-
 sys/netinet/tcp_usrreq.c   | 8 +++-----
 sys/netinet6/ip6_var.h     | 1 -
 sys/netinet6/udp6_usrreq.c | 6 +++---
 4 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/sys/netinet/in_pcb.c b/sys/netinet/in_pcb.c
index 744cfc263561..8284031a200e 100644
--- a/sys/netinet/in_pcb.c
+++ b/sys/netinet/in_pcb.c
@@ -159,7 +159,7 @@ in_pcballoc(so, pcbinfo, td)
 	}
 #endif /*IPSEC*/
 #if defined(INET6)
-	if (INP_SOCKAF(so) == AF_INET6 && !ip6_mapped_addr_on)
+	if (INP_SOCKAF(so) == AF_INET6 && ip6_v6only)
 		inp->inp_flags |= IN6P_IPV6_V6ONLY;
 #endif
 	LIST_INSERT_HEAD(pcbinfo->listhead, inp, inp_list);
diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c
index 9c4b547767cf..286fd7f2781c 100644
--- a/sys/netinet/tcp_usrreq.c
+++ b/sys/netinet/tcp_usrreq.c
@@ -280,7 +280,7 @@ tcp6_usr_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
 	}
 	inp->inp_vflag &= ~INP_IPV4;
 	inp->inp_vflag |= INP_IPV6;
-	if (ip6_mapped_addr_on && (inp->inp_flags & IN6P_IPV6_V6ONLY) == 0) {
+	if (!ip6_v6only && (inp->inp_flags & IN6P_IPV6_V6ONLY) == 0) {
 		if (IN6_IS_ADDR_UNSPECIFIED(&sin6p->sin6_addr))
 			inp->inp_vflag |= INP_IPV4;
 		else if (IN6_IS_ADDR_V4MAPPED(&sin6p->sin6_addr)) {
@@ -333,8 +333,7 @@ tcp6_usr_listen(struct socket *so, struct thread *td)
 	COMMON_START();
 	if (inp->inp_lport == 0) {
 		inp->inp_vflag &= ~INP_IPV4;
-		if (ip6_mapped_addr_on &&
-		    (inp->inp_flags & IN6P_IPV6_V6ONLY) == 0)
+		if (!ip6_v6only && (inp->inp_flags & IN6P_IPV6_V6ONLY) == 0)
 			inp->inp_vflag |= INP_IPV4;
 		error = in6_pcbbind(inp, (struct sockaddr *)0, td);
 	}
@@ -408,8 +407,7 @@ tcp6_usr_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
 	if (IN6_IS_ADDR_V4MAPPED(&sin6p->sin6_addr)) {
 		struct sockaddr_in sin;
 
-		if (!ip6_mapped_addr_on ||
-		    (inp->inp_flags & IN6P_IPV6_V6ONLY))
+		if (ip6_v6only || (inp->inp_flags & IN6P_IPV6_V6ONLY))
 			return(EINVAL);
 
 		in6_sin6_2_sin(&sin, sin6p);
diff --git a/sys/netinet6/ip6_var.h b/sys/netinet6/ip6_var.h
index f226cc637a8f..fdf709bb0d7f 100644
--- a/sys/netinet6/ip6_var.h
+++ b/sys/netinet6/ip6_var.h
@@ -260,7 +260,6 @@ extern int	ip6_gif_hlim;		/* Hop limit for gif encap packet */
 extern int	ip6_use_deprecated;	/* allow deprecated addr as source */
 extern int	ip6_rr_prune;		/* router renumbering prefix
 					 * walk list every 5 sec.    */
-#define ip6_mapped_addr_on	(!ip6_v6only)
 extern int	ip6_v6only;
 
 extern struct socket *ip6_mrouter; 	/* multicast routing daemon */
diff --git a/sys/netinet6/udp6_usrreq.c b/sys/netinet6/udp6_usrreq.c
index 8617d0d39c53..c9fcbcb32a69 100644
--- a/sys/netinet6/udp6_usrreq.c
+++ b/sys/netinet6/udp6_usrreq.c
@@ -538,7 +538,7 @@ udp6_attach(struct socket *so, int proto, struct thread *td)
 		return error;
 	inp = (struct inpcb *)so->so_pcb;
 	inp->inp_vflag |= INP_IPV6;
-	if (ip6_mapped_addr_on)
+	if (!ip6_v6only)
 		inp->inp_vflag |= INP_IPV4;
 	inp->in6p_hops = -1;	/* use kernel default */
 	inp->in6p_cksum = -1;	/* just to be sure */
@@ -627,7 +627,7 @@ udp6_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
 	error = in6_pcbconnect(inp, nam, td);
 	splx(s);
 	if (error == 0) {
-		if (ip6_mapped_addr_on) { /* should be non mapped addr */
+		if (!ip6_v6only) { /* should be non mapped addr */
 			inp->inp_vflag &= ~INP_IPV4;
 			inp->inp_vflag |= INP_IPV6;
 		}
@@ -703,7 +703,7 @@ udp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 		}
 	}
 
-	if (ip6_mapped_addr_on) {
+	if (!ip6_v6only) {
 		int hasv4addr;
 		struct sockaddr_in6 *sin6 = 0;