network: move LinkOperationalState and relevant functions to network-util.[ch]

src/libsystemd/sd-network/network-util.c

@@ -3,6 +3,7 @@
 #include "alloc-util.h"
 #include "fd-util.h"
 #include "network-util.h"
+#include "string-table.h"
 #include "strv.h"
 
 bool network_is_online(void) {
@@ -18,3 +19,15 @@ bool network_is_online(void) {
 
         return false;
 }
+
+static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = {
+        [LINK_OPERSTATE_OFF] = "off",
+        [LINK_OPERSTATE_NO_CARRIER] = "no-carrier",
+        [LINK_OPERSTATE_DORMANT] = "dormant",
+        [LINK_OPERSTATE_CARRIER] = "carrier",
+        [LINK_OPERSTATE_DEGRADED] = "degraded",
+        [LINK_OPERSTATE_ENSLAVED] = "enslaved",
+        [LINK_OPERSTATE_ROUTABLE] = "routable",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState);

src/libsystemd/sd-network/network-util.h

@@ -3,4 +3,21 @@
 
 #include "sd-network.h"
 
+#include "macro.h"
+
 bool network_is_online(void);
+
+typedef enum LinkOperationalState {
+        LINK_OPERSTATE_OFF,
+        LINK_OPERSTATE_NO_CARRIER,
+        LINK_OPERSTATE_DORMANT,
+        LINK_OPERSTATE_CARRIER,
+        LINK_OPERSTATE_DEGRADED,
+        LINK_OPERSTATE_ENSLAVED,
+        LINK_OPERSTATE_ROUTABLE,
+        _LINK_OPERSTATE_MAX,
+        _LINK_OPERSTATE_INVALID = -1
+} LinkOperationalState;
+
+const char* link_operstate_to_string(LinkOperationalState s) _const_;
+LinkOperationalState link_operstate_from_string(const char *s) _pure_;