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/net/sunrpc/addr.c b/net/sunrpc/addr.c
index 67a655e..ee77742 100644
--- a/net/sunrpc/addr.c
+++ b/net/sunrpc/addr.c
@@ -21,7 +21,7 @@
 #include <linux/slab.h>
 #include <linux/export.h>
 
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 
 static size_t rpc_ntop6_noscopeid(const struct sockaddr *sap,
 				  char *buf, const int buflen)
@@ -91,7 +91,7 @@
 	return len;
 }
 
-#else	/* !(defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)) */
+#else	/* !IS_ENABLED(CONFIG_IPV6) */
 
 static size_t rpc_ntop6_noscopeid(const struct sockaddr *sap,
 				  char *buf, const int buflen)
@@ -105,7 +105,7 @@
 	return 0;
 }
 
-#endif	/* !(defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)) */
+#endif	/* !IS_ENABLED(CONFIG_IPV6) */
 
 static int rpc_ntop4(const struct sockaddr *sap,
 		     char *buf, const size_t buflen)
@@ -155,7 +155,7 @@
 	return sizeof(struct sockaddr_in);
 }
 
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 static int rpc_parse_scope_id(const char *buf, const size_t buflen,
 			      const char *delim, struct sockaddr_in6 *sin6)
 {
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 6e03888..9d01d46 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -826,7 +826,7 @@
 	return error;
 }
 
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 /*
  * Register an "inet6" protocol family netid with the local
  * rpcbind daemon via an rpcbind v4 SET request.
@@ -872,7 +872,7 @@
 
 	return error;
 }
-#endif	/* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+#endif	/* IS_ENABLED(CONFIG_IPV6) */
 
 /*
  * Register a kernel RPC service via rpcbind version 4.
@@ -893,11 +893,11 @@
 		error = __svc_rpcb_register4(program, version,
 						protocol, port);
 		break;
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 	case PF_INET6:
 		error = __svc_rpcb_register6(program, version,
 						protocol, port);
-#endif	/* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+#endif
 	}
 
 	if (error < 0)
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index 447cd0e..38649cf 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -179,13 +179,13 @@
 		.sin_addr.s_addr	= htonl(INADDR_ANY),
 		.sin_port		= htons(port),
 	};
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 	struct sockaddr_in6 sin6 = {
 		.sin6_family		= AF_INET6,
 		.sin6_addr		= IN6ADDR_ANY_INIT,
 		.sin6_port		= htons(port),
 	};
-#endif	/* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+#endif
 	struct sockaddr *sap;
 	size_t len;
 
@@ -194,12 +194,12 @@
 		sap = (struct sockaddr *)&sin;
 		len = sizeof(sin);
 		break;
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 	case PF_INET6:
 		sap = (struct sockaddr *)&sin6;
 		len = sizeof(sin6);
 		break;
-#endif	/* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+#endif
 	default:
 		return ERR_PTR(-EAFNOSUPPORT);
 	}
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index fe258fc..01153ea 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -220,7 +220,7 @@
 		ipv6_addr_set_v4mapped(address.s4.sin_addr.s_addr,
 				&sin6.sin6_addr);
 		break;
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
 	case AF_INET6:
 		memcpy(&sin6, &address.s6, sizeof(sin6));
 		break;