networkd: add support to configure VLAN on bridge ports

src/basic/macro.h

@@ -89,6 +89,15 @@
 #define UNIQ_T(x, uniq) CONCATENATE(__unique_prefix_, CONCATENATE(x, uniq))
 #define UNIQ __COUNTER__
 
+/* builtins */
+#if __SIZEOF_INT__ == 4
+#define BUILTIN_FFS_U32(x) __builtin_ffs(x);
+#elif __SIZEOF_LONG__ == 4
+#define BUILTIN_FFS_U32(x) __builtin_ffsl(x);
+#else
+#error "neither int nor long are four bytes long?!?"
+#endif
+
 /* Rounds up */
 
 #define ALIGN4(l) (((l) + 3) & ~3)

src/basic/missing.h

@@ -759,6 +759,14 @@ struct btrfs_ioctl_quota_ctl_args {
 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
 #endif
 
+#ifndef BRIDGE_VLAN_INFO_RANGE_BEGIN
+#define BRIDGE_VLAN_INFO_RANGE_BEGIN (1<<3) /* VLAN is start of vlan range */
+#endif
+
+#ifndef BRIDGE_VLAN_INFO_RANGE_END
+#define BRIDGE_VLAN_INFO_RANGE_END (1<<4) /* VLAN is end of vlan range */
+#endif
+
 #if !HAVE_DECL_IFLA_BR_VLAN_DEFAULT_PVID
 #define IFLA_BR_UNSPEC 0
 #define IFLA_BR_FORWARD_DELAY 1