added QSE_NWIFCFG_LINKUP, QSE_NWIFCFG_LINKDOWN, QSE_NWAD_NX.

changed qse_nwifcfg() to set an address type to QSE_NWAD_NX when the address can't be retrieved

qse/include/qse/cmn/nwad.h

@@ -27,6 +27,7 @@
 
 enum qse_nwad_type_t
 {
+	QSE_NWAD_NX, /* non-existent */
 	QSE_NWAD_IN4,
 	QSE_NWAD_IN6
 };

qse/include/qse/cmn/nwif.h

@@ -29,10 +29,12 @@ typedef struct qse_nwifcfg_t qse_nwifcfg_t;
 
 enum qse_nwifcfg_flag_t
 {
-	QSE_NWIFCFG_UP      = (1 << 0),
-	QSE_NWIFCFG_RUNNING = (1 << 1),
-	QSE_NWIFCFG_BCAST   = (1 << 2),
-	QSE_NWIFCFG_PTOP    = (1 << 3)
+	QSE_NWIFCFG_UP       = (1 << 0),
+	QSE_NWIFCFG_RUNNING  = (1 << 1),
+	QSE_NWIFCFG_BCAST    = (1 << 2),
+	QSE_NWIFCFG_PTOP     = (1 << 3),
+	QSE_NWIFCFG_LINKUP   = (1 << 4),
+	QSE_NWIFCFG_LINKDOWN = (1 << 5)
 };
 
 enum qse_nwifcfg_type_t

qse/include/qse/config.h.in

@@ -203,6 +203,12 @@
 /* Define to 1 if you have the `ltdl' library (-lltdl). */
 #undef HAVE_LIBLTDL
 
+/* Define to 1 if you have the <linux/ethtool.h> header file. */
+#undef HAVE_LINUX_ETHTOOL_H
+
+/* Define to 1 if you have the <linux/sockios.h> header file. */
+#undef HAVE_LINUX_SOCKIOS_H
+
 /* Define to 1 if you have the `log' function. */
 #undef HAVE_LOG