src: apply some INET6 so this compiles in INET6-less kernels again.

[Repository Conversion <srcmastr%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/0d5098e2bc54
branches:  trunk
changeset: 318003:0d5098e2bc54
user:      mrg <mrg%NetBSD.org@localhost>
date:      Tue Apr 10 04:29:57 2018 +0000
description:
apply some INET6 so this compiles in INET6-less kernels again.

diffstat:

 sys/net/npf/npf_sendpkt.c |  10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diffs (60 lines):

diff -r f2defaf484f1 -r 0d5098e2bc54 sys/net/npf/npf_sendpkt.c
--- a/sys/net/npf/npf_sendpkt.c Tue Apr 10 00:59:55 2018 +0000
+++ b/sys/net/npf/npf_sendpkt.c Tue Apr 10 04:29:57 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: npf_sendpkt.c,v 1.18 2018/03/17 10:42:23 maxv Exp $    */
+/*     $NetBSD: npf_sendpkt.c,v 1.19 2018/04/10 04:29:57 mrg Exp $     */
 
 /*-
  * Copyright (c) 2010-2011 The NetBSD Foundation, Inc.
@@ -35,7 +35,7 @@
 
 #ifdef _KERNEL
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: npf_sendpkt.c,v 1.18 2018/03/17 10:42:23 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: npf_sendpkt.c,v 1.19 2018/04/10 04:29:57 mrg Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -176,6 +176,7 @@
                    sizeof(struct tcphdr));
        }
 
+#if defined(INET6)
        /* Handle IPv6 scopes */
        if (npf_iscached(npc, NPC_IP6)) {
                const struct ifnet *rcvif = npc->npc_nbuf->nb_ifp;
@@ -189,14 +190,17 @@
                        goto bad;
                }
        }
+#endif
 
        /* Pass to IP layer. */
        if (npf_iscached(npc, NPC_IP4)) {
                return ip_output(m, NULL, NULL, IP_FORWARDING, NULL, NULL);
        }
+#if defined(INET6)
        return ip6_output(m, NULL, NULL, IPV6_FORWARDING, NULL, NULL, NULL);
 
 bad:
+#endif
        m_freem(m);
        return EINVAL;
 }
@@ -212,6 +216,7 @@
        if (npf_iscached(npc, NPC_IP4)) {
                icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_ADMIN_PROHIBIT, 0, 0);
                return 0;
+#if defined(INET6)
        } else if (npf_iscached(npc, NPC_IP6)) {
                /* Handle IPv6 scopes */
                const struct ifnet *rcvif = npc->npc_nbuf->nb_ifp;
@@ -227,6 +232,7 @@
 
                icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN, 0);
                return 0;
+#endif
        }
        return EINVAL;
 }