1 files changed, 9 insertions, 4 deletions
diff --git a/src/shared/firewall-util-private.h b/src/shared/firewall-util-private.h
index 59e1e502fd..07e2d0bbd3 100644
--- a/src/shared/firewall-util-private.h
+++ b/src/shared/firewall-util-private.h
@@ -4,22 +4,27 @@
 #include <stdbool.h>
 #include <stdint.h>
 
-#include "in-addr-util.h"
 #include "sd-netlink.h"
 
-enum FirewallBackend {
+#include "in-addr-util.h"
+
+typedef enum FirewallBackend {
         FW_BACKEND_NONE,
 #if HAVE_LIBIPTC
         FW_BACKEND_IPTABLES,
 #endif
         FW_BACKEND_NFTABLES,
-};
+        _FW_BACKEND_MAX,
+        _FW_BACKEND_INVALID = -EINVAL,
+} FirewallBackend;
 
 struct FirewallContext {
-        enum FirewallBackend firewall_backend;
+        FirewallBackend backend;
         sd_netlink *nfnl;
 };
 
+const char *firewall_backend_to_string(FirewallBackend b) _const_;
+
 int fw_nftables_init(FirewallContext *ctx);
 void fw_nftables_exit(FirewallContext *ctx);