core: add nm_utils_ipx_address_clear_host_address() util

src/nm-core-utils.c

@@ -199,6 +199,27 @@ nm_ethernet_address_is_valid (gconstpointer addr, gssize len)
 	return TRUE;
 }
 
+gconstpointer
+nm_utils_ipx_address_clear_host_address (int family, gpointer dst, gconstpointer src, guint8 plen)
+{
+	g_return_val_if_fail (src, NULL);
+	g_return_val_if_fail (dst, NULL);
+
+	switch (family) {
+	case AF_INET:
+		g_return_val_if_fail (plen <= 32, NULL);
+		*((guint32 *) dst) = nm_utils_ip4_address_clear_host_address (*((guint32 *) src), plen);
+		break;
+	case AF_INET6:
+		g_return_val_if_fail (plen <= 128, NULL);
+		nm_utils_ip6_address_clear_host_address (dst, src, plen);
+		break;
+	default:
+		g_return_val_if_reached (NULL);
+	}
+	return dst;
+}
+
 /* nm_utils_ip4_address_clear_host_address:
  * @addr: source ip6 address
  * @plen: prefix length of network

src/nm-core-utils.h

@@ -93,6 +93,7 @@ GETTER (void) \
 
 gboolean nm_ethernet_address_is_valid (gconstpointer addr, gssize len);
 
+gconstpointer nm_utils_ipx_address_clear_host_address (int family, gpointer dst, gconstpointer src, guint8 plen);
 in_addr_t nm_utils_ip4_address_clear_host_address (in_addr_t addr, guint8 plen);
 const struct in6_addr *nm_utils_ip6_address_clear_host_address (struct in6_addr *dst, const struct in6_addr *src, guint8 plen);
 gboolean nm_utils_ip6_address_same_prefix (const struct in6_addr *addr_a, const struct in6_addr *addr_b, guint8 plen);

src/platform/nm-linux-platform.c

@@ -308,23 +308,6 @@ _support_user_ipv6ll_detect (struct nlattr **tb)
  * Various utilities
  ******************************************************************/
 
-static void
-clear_host_address (int family, const void *network, guint8 plen, void *dst)
-{
-	g_return_if_fail (network);
-
-	switch (family) {
-	case AF_INET:
-		*((in_addr_t *) dst) = nm_utils_ip4_address_clear_host_address (*((in_addr_t *) network), plen);
-		break;
-	case AF_INET6:
-		nm_utils_ip6_address_clear_host_address ((struct in6_addr *) dst, (const struct in6_addr *) network, plen);
-		break;
-	default:
-		g_assert_not_reached ();
-	}
-}
-
 static int
 _vlan_qos_mapping_cmp_from (gconstpointer a, gconstpointer b, gpointer user_data)
 {
@@ -2285,7 +2268,7 @@ _nl_msg_new_route (int nlmsg_type,
 
 	addr_len = family == AF_INET ? sizeof (in_addr_t) : sizeof (struct in6_addr);
 
-	clear_host_address (family, network, plen, &network_clean);
+	nm_utils_ipx_address_clear_host_address (family, &network_clean, network, plen);
 	NLA_PUT (msg, RTA_DST, addr_len, &network_clean);
 
 	NLA_PUT_U32 (msg, RTA_PRIORITY, metric);