netfilter: replace defined(CONFIG...) || defined(CONFIG...MODULE) with IS_ENABLED(CONFIG...).

A few headers contain instances of:

  #if defined(CONFIG_XXX) or defined(CONFIG_XXX_MODULE)

Replace them with:

  #if IS_ENABLED(CONFIG_XXX)
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

include/linux/netfilter.h

@@ -422,7 +422,7 @@ nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, u_int8_t family)
 }
 #endif /*CONFIG_NETFILTER*/
 
-#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+#if IS_ENABLED(CONFIG_NF_CONNTRACK)
 #include <linux/netfilter/nf_conntrack_zones_common.h>
 
 extern void (*ip_ct_attach)(struct sk_buff *, const struct sk_buff *) __rcu;

include/linux/netfilter/ipset/ip_set_getport.h

@@ -9,7 +9,7 @@
 extern bool ip_set_get_ip4_port(const struct sk_buff *skb, bool src,
 				__be16 *port, u8 *proto);
 
-#if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE)
+#if IS_ENABLED(CONFIG_IP6_NF_IPTABLES)
 extern bool ip_set_get_ip6_port(const struct sk_buff *skb, bool src,
 				__be16 *port, u8 *proto);
 #else

include/net/netfilter/nf_conntrack_extend.h

@@ -8,7 +8,7 @@
 
 enum nf_ct_ext_id {
 	NF_CT_EXT_HELPER,
-#if defined(CONFIG_NF_NAT) || defined(CONFIG_NF_NAT_MODULE)
+#if IS_ENABLED(CONFIG_NF_NAT)
 	NF_CT_EXT_NAT,
 #endif
 	NF_CT_EXT_SEQADJ,

include/net/netfilter/nf_nat.h

@@ -22,7 +22,7 @@ enum nf_nat_manip_type {
 /* per conntrack: nat application helper private data */
 union nf_conntrack_nat_help {
 	/* insert nat helper private data here */
-#if defined(CONFIG_NF_NAT_PPTP) || defined(CONFIG_NF_NAT_PPTP_MODULE)
+#if IS_ENABLED(CONFIG_NF_NAT_PPTP)
 	struct nf_nat_pptp nat_pptp_info;
 #endif
 };
@@ -47,7 +47,7 @@ struct nf_conn_nat *nf_ct_nat_ext_add(struct nf_conn *ct);
 
 static inline struct nf_conn_nat *nfct_nat(const struct nf_conn *ct)
 {
-#if defined(CONFIG_NF_NAT) || defined(CONFIG_NF_NAT_MODULE)
+#if IS_ENABLED(CONFIG_NF_NAT)
 	return nf_ct_ext_find(ct, NF_CT_EXT_NAT);
 #else
 	return NULL;