net: use IS_ENABLED(CONFIG_IPV6)

Instead of testing defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/errqueue.h b/include/linux/errqueue.h
index c9f522b..fd0628b 100644
--- a/include/linux/errqueue.h
+++ b/include/linux/errqueue.h
@@ -25,7 +25,7 @@
 #ifdef __KERNEL__
 
 #include <net/ip.h>
-#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 #include <linux/ipv6.h>
 #endif
 
@@ -34,7 +34,7 @@
 struct sock_exterr_skb {
 	union {
 		struct inet_skb_parm	h4;
-#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 		struct inet6_skb_parm	h6;
 #endif
 	} header;
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 0c99776..6318268 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -404,7 +404,7 @@
 
 extern int inet6_sk_rebuild_header(struct sock *sk);
 
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
 {
 	return inet_sk(__sk)->pinet6;
@@ -515,7 +515,7 @@
 #define inet6_rcv_saddr(__sk)	NULL
 #define tcp_twsk_ipv6only(__sk)		0
 #define inet_v6_ipv6only(__sk)		0
-#endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+#endif /* IS_ENABLED(CONFIG_IPV6) */
 
 #define INET6_MATCH(__sk, __net, __hash, __saddr, __daddr, __ports, __dif)\
 	(((__sk)->sk_hash == (__hash)) && sock_net((__sk)) == (__net)	&& \
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index ff9abff..90b0656 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -301,7 +301,7 @@
 	return ipv4_is_loopback(sin->sin_addr.s_addr);
 }
 
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 static inline int __nlm_privileged_request6(const struct sockaddr *sap)
 {
 	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
@@ -314,12 +314,12 @@
 
 	return ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LOOPBACK;
 }
-#else	/* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+#else	/* IS_ENABLED(CONFIG_IPV6) */
 static inline int __nlm_privileged_request6(const struct sockaddr *sap)
 {
 	return 0;
 }
-#endif	/* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+#endif	/* IS_ENABLED(CONFIG_IPV6) */
 
 /*
  * Ensure incoming requests are from local privileged callers.
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index f15fd98..2c5993a 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -215,7 +215,7 @@
 	return true;
 }
 
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1,
 				   const struct sockaddr *sap2)
 {
@@ -240,7 +240,7 @@
 	dsin6->sin6_addr = ssin6->sin6_addr;
 	return true;
 }
-#else	/* !(CONFIG_IPV6 || CONFIG_IPV6_MODULE) */
+#else	/* !(IS_ENABLED(CONFIG_IPV6) */
 static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1,
 				   const struct sockaddr *sap2)
 {
@@ -252,7 +252,7 @@
 {
 	return false;
 }
-#endif	/* !(CONFIG_IPV6 || CONFIG_IPV6_MODULE) */
+#endif	/* !(IS_ENABLED(CONFIG_IPV6) */
 
 /**
  * rpc_cmp_addr - compare the address portion of two sockaddrs.