Revert in_selectsrc() refactoring, it breaks IPv6.

Reported by Heiko on bugs@.

ok stsp@, claudio@

7 files changed, 31 insertions, 44 deletions

diff --git a/sys/netinet6/icmp6.c b/sys/netinet6/icmp6.c
index 1bfd67f5ada..22731d2337f 100644
--- a/sys/netinet6/icmp6.c
+++ b/sys/netinet6/icmp6.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: icmp6.c,v 1.187 2016/07/20 18:51:50 vgross Exp $	*/
+/*	$OpenBSD: icmp6.c,v 1.188 2016/07/22 11:14:41 mpi Exp $	*/
 /*	$KAME: icmp6.c,v 1.217 2001/06/20 15:03:29 jinmei Exp $	*/
 
 /*
@@ -1259,7 +1259,7 @@ icmp6_reflect(struct mbuf *m, size_t off)
 		 * source address of the erroneous packet.
 		 */
 		bzero(&ro, sizeof(ro));
-		error = in6_selectsrc(&src, &sa6_src, NULL, &ro,
+		error = in6_selectsrc(&src, &sa6_src, NULL, NULL, &ro, NULL,
 		    m->m_pkthdr.ph_rtableid);
 		if (ro.ro_rt)
 			rtfree(ro.ro_rt); /* XXX: we could use this */
diff --git a/sys/netinet6/in6_pcb.c b/sys/netinet6/in6_pcb.c
index c6bdb0b988b..2eb66c9483e 100644
--- a/sys/netinet6/in6_pcb.c
+++ b/sys/netinet6/in6_pcb.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: in6_pcb.c,v 1.94 2016/07/20 18:51:50 vgross Exp $	*/
+/*	$OpenBSD: in6_pcb.c,v 1.95 2016/07/22 11:14:41 mpi Exp $	*/
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -281,7 +281,9 @@ in6_pcbconnect(struct inpcb *inp, struct mbuf *nam)
 	 * with the address specified by setsockopt(IPV6_PKTINFO).
 	 * Is it the intended behavior?
 	 */
-	error = in6_pcbselsrc(&in6a, sin6, inp, inp->inp_outputopts6);
+	error = in6_selectsrc(&in6a, sin6, inp->inp_outputopts6,
+	    inp->inp_moptions6, &inp->inp_route6, &inp->inp_laddr6,
+	    inp->inp_rtableid);
 	if (error)
 		return (error);
 
diff --git a/sys/netinet6/in6_src.c b/sys/netinet6/in6_src.c
index 26d7df7c5c7..864724109da 100644
--- a/sys/netinet6/in6_src.c
+++ b/sys/netinet6/in6_src.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: in6_src.c,v 1.77 2016/07/20 18:51:50 vgross Exp $	*/
+/*	$OpenBSD: in6_src.c,v 1.78 2016/07/22 11:14:41 mpi Exp $	*/
 /*	$KAME: in6_src.c,v 1.36 2001/02/06 04:08:17 itojun Exp $	*/
 
 /*
@@ -88,18 +88,15 @@ int in6_selectif(struct sockaddr_in6 *, struct ip6_pktopts *,
 
 /*
  * Return an IPv6 address, which is the most appropriate for a given
- * destination and pcb. We need the additional opt parameter because
- * the values set at pcb level can be overriden via cmsg.
+ * destination and user specified options.
+ * If necessary, this function lookups the routing table and returns
+ * an entry to the caller for later use.
  */
 int
-in6_pcbselsrc(struct in6_addr **in6src, struct sockaddr_in6 *dstsock,
-    struct inpcb *inp, struct ip6_pktopts *opts)
+in6_selectsrc(struct in6_addr **in6src, struct sockaddr_in6 *dstsock,
+    struct ip6_pktopts *opts, struct ip6_moptions *mopts,
+    struct route_in6 *ro, struct in6_addr *laddr, u_int rtableid)
 {
-	struct ip6_moptions *mopts = inp->inp_moptions6;
-	struct route_in6 *ro = &inp->inp_route6;
-	struct in6_addr *laddr = &inp->inp_laddr6;
-	u_int rtableid = inp->inp_rtableid;
-
 	struct ifnet *ifp = NULL;
 	struct in6_addr *dst;
 	struct in6_ifaddr *ia6 = NULL;
@@ -172,23 +169,6 @@ in6_pcbselsrc(struct in6_addr **in6src, struct sockaddr_in6 *dstsock,
 		return (0);
 	}
 
-	return in6_selectsrc(in6src, dstsock, mopts, ro, rtableid);
-}
-
-/*
- * Return an IPv6 address, which is the most appropriate for a given
- * destination and multicast options.
- * If necessary, this function lookups the routing table and returns
- * an entry to the caller for later use.
- */
-int
-in6_selectsrc(struct in6_addr **in6src, struct sockaddr_in6 *dstsock,
-    struct ip6_moptions *mopts, struct route_in6 *ro, u_int rtableid)
-{
-	struct ifnet *ifp = NULL;
-	struct in6_addr *dst;
-	struct in6_ifaddr *ia6 = NULL;
-
 	/*
 	 * If the destination address is a link-local unicast address or
 	 * a link/interface-local multicast address, and if the outgoing
diff --git a/sys/netinet6/ip6_var.h b/sys/netinet6/ip6_var.h
index 064221e6275..119ca5457af 100644
--- a/sys/netinet6/ip6_var.h
+++ b/sys/netinet6/ip6_var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip6_var.h,v 1.61 2016/07/20 18:51:50 vgross Exp $	*/
+/*	$OpenBSD: ip6_var.h,v 1.62 2016/07/22 11:14:41 mpi Exp $	*/
 /*	$KAME: ip6_var.h,v 1.33 2000/06/11 14:59:20 jinmei Exp $	*/
 
 /*
@@ -294,10 +294,9 @@ int	rip6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
 int	dest6_input(struct mbuf **, int *, int);
 int	none_input(struct mbuf **, int *, int);
 
-int	in6_pcbselsrc(struct in6_addr **, struct sockaddr_in6 *,
-	    struct inpcb *, struct ip6_pktopts *);
 int	in6_selectsrc(struct in6_addr **, struct sockaddr_in6 *,
-	    struct ip6_moptions *, struct route_in6 *, u_int);
+	    struct ip6_pktopts *, struct ip6_moptions *, struct route_in6 *,
+	    struct in6_addr *, u_int);
 struct rtentry *in6_selectroute(struct sockaddr_in6 *, struct ip6_pktopts *,
 	    struct route_in6 *, unsigned int rtableid);
 
diff --git a/sys/netinet6/nd6_nbr.c b/sys/netinet6/nd6_nbr.c
index f701aa4b514..0a8ea1a07ea 100644
--- a/sys/netinet6/nd6_nbr.c
+++ b/sys/netinet6/nd6_nbr.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: nd6_nbr.c,v 1.106 2016/07/20 18:51:50 vgross Exp $	*/
+/*	$OpenBSD: nd6_nbr.c,v 1.107 2016/07/22 11:14:41 mpi Exp $	*/
 /*	$KAME: nd6_nbr.c,v 1.61 2001/02/10 16:06:14 jinmei Exp $	*/
 
 /*
@@ -471,8 +471,8 @@ nd6_ns_output(struct ifnet *ifp, struct in6_addr *daddr6,
 			int error;
 
 			bcopy(&dst_sa, &ro.ro_dst, sizeof(dst_sa));
-			error = in6_selectsrc(&src0, &dst_sa, NULL, &ro,
-			    m->m_pkthdr.ph_rtableid);
+			error = in6_selectsrc(&src0, &dst_sa, NULL, NULL, &ro,
+			    NULL, m->m_pkthdr.ph_rtableid);
 			if (error) {
 				char addr[INET6_ADDRSTRLEN];
 
@@ -990,7 +990,7 @@ nd6_na_output(struct ifnet *ifp, struct in6_addr *daddr6,
 	 * Select a source whose scope is the same as that of the dest.
 	 */
 	bcopy(&dst_sa, &ro.ro_dst, sizeof(dst_sa));
-	error = in6_selectsrc(&src0, &dst_sa, NULL, &ro,
+	error = in6_selectsrc(&src0, &dst_sa, NULL, NULL, &ro, NULL,
 	    m->m_pkthdr.ph_rtableid);
 	if (error) {
 		char addr[INET6_ADDRSTRLEN];
diff --git a/sys/netinet6/raw_ip6.c b/sys/netinet6/raw_ip6.c
index da8cd22922a..ee18013fc4b 100644
--- a/sys/netinet6/raw_ip6.c
+++ b/sys/netinet6/raw_ip6.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: raw_ip6.c,v 1.92 2016/07/20 18:51:50 vgross Exp $	*/
+/*	$OpenBSD: raw_ip6.c,v 1.93 2016/07/22 11:14:41 mpi Exp $	*/
 /*	$KAME: raw_ip6.c,v 1.69 2001/03/04 15:55:44 itojun Exp $	*/
 
 /*
@@ -396,7 +396,9 @@ rip6_output(struct mbuf *m, ...)
 	{
 		struct in6_addr *in6a;
 
-		error = in6_pcbselsrc(&in6a, dstsock, in6p, optp);
+		error = in6_selectsrc(&in6a, dstsock, optp,
+		    in6p->inp_moptions6, &in6p->inp_route6, &in6p->inp_laddr6,
+		    in6p->inp_rtableid);
 		if (error)
 			goto bad;
 
@@ -698,7 +700,9 @@ rip6_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 		}
 
 		/* Source address selection. XXX: need pcblookup? */
-		error = in6_pcbselsrc(&in6a, addr, in6p, in6p->inp_outputopts6);
+		error = in6_selectsrc(&in6a, addr, in6p->inp_outputopts6,
+		    in6p->inp_moptions6, &in6p->inp_route6,
+		    &in6p->inp_laddr6, in6p->inp_rtableid);
 		if (error)
 			break;
 		in6p->inp_laddr6 = *in6a;
diff --git a/sys/netinet6/udp6_output.c b/sys/netinet6/udp6_output.c
index 61f3b3a4833..2764a977ee5 100644
--- a/sys/netinet6/udp6_output.c
+++ b/sys/netinet6/udp6_output.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: udp6_output.c,v 1.49 2016/07/20 18:51:50 vgross Exp $	*/
+/*	$OpenBSD: udp6_output.c,v 1.50 2016/07/22 11:14:41 mpi Exp $	*/
 /*	$KAME: udp6_output.c,v 1.21 2001/02/07 11:51:54 itojun Exp $	*/
 
 /*
@@ -154,7 +154,9 @@ udp6_output(struct inpcb *in6p, struct mbuf *m, struct mbuf *addr6,
 			goto release;
 		}
 
-		error = in6_pcbselsrc(&laddr, sin6, in6p, optp);
+		error = in6_selectsrc(&laddr, sin6, optp,
+		    in6p->inp_moptions6, &in6p->inp_route6,
+		    &in6p->inp_laddr6, in6p->inp_rtableid);
 		if (error)
 			goto release;