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-rw-r--r--net/iproute2.sh23
1 files changed, 23 insertions, 0 deletions
diff --git a/net/iproute2.sh b/net/iproute2.sh
index 214841e4..e177c6d9 100644
--- a/net/iproute2.sh
+++ b/net/iproute2.sh
@@ -327,3 +327,26 @@ iproute2_post_stop()
fi
fi
}
+
+# Is the interface administratively/operationally up?
+# The 'UP' status in ifconfig/iproute2 is the administrative status
+# Operational state is available in iproute2 output as 'state UP', or the
+# operstate sysfs variable.
+# 0: up
+# 1: down
+# 2: invalid arguments
+is_admin_up()
+{
+ local iface="$1"
+ [ -z "$iface" ] && iface="$IFACE"
+ ip link show dev $iface | \
+ sed -n '1,1{ /[<,]UP[,>]/{ q 0 }}; q 1; '
+}
+
+is_oper_up()
+{
+ local iface="$1"
+ [ -z "$iface" ] && iface="$IFACE"
+ read state </sys/class/net/"${iface}"/operstate
+ [ "x$state" = "up" ]
+}