netfilter: tproxy: fix build with IP6_NF_IPTABLES=n

after commit 93742cf (netfilter: tproxy: remove nf_tproxy_core.h)

CONFIG_IPV6=y
CONFIG_IP6_NF_IPTABLES=n

gives us:

net/netfilter/xt_TPROXY.c: In function 'nf_tproxy_get_sock_v6':
net/netfilter/xt_TPROXY.c:178:4: error: implicit declaration of function 'inet6_lookup_listener'

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/xt_TPROXY.c b/net/netfilter/xt_TPROXY.c
index 851383a7f4619684ce3751cbd97a715792ce6643..5d8a3a3cd5a7cd04b714d92a1366c04ad464e716 100644 (file)
--- a/net/netfilter/xt_TPROXY.c
+++ b/net/netfilter/xt_TPROXY.c
@@ -161,7 +161,7 @@ nf_tproxy_get_sock_v4(struct net *net, const u8 protocol,
        return sk;
 }
 
-#if IS_ENABLED(CONFIG_IPV6)
+#ifdef XT_TPROXY_HAVE_IPV6
 static inline struct sock *
 nf_tproxy_get_sock_v6(struct net *net, const u8 protocol,
                      const struct in6_addr *saddr, const struct in6_addr *daddr,