+#define foreach_tapcli_error \
+ /* Must be first. */ \
+ _(NONE, "no error") \
+ _(READ, "read error") \
+ _(UNKNOWN, "unknown error")
+
+typedef enum {
+#define _(sym,str) TAPCLI_ERROR_##sym,
+ foreach_tapcli_error
+#undef _
+ TAPCLI_N_ERROR,
+ } tapcli_error_t;