2 files changed, 43 insertions, 0 deletions
diff --git a/recipes-connectivity/kuksa-val/can-dev-helper/can-dev-helper.service b/recipes-connectivity/kuksa-val/can-dev-helper/can-dev-helper.service
new file mode 100644
index 000000000..04e6a9c35
--- /dev/null
+++ b/recipes-connectivity/kuksa-val/can-dev-helper/can-dev-helper.service
@@ -0,0 +1,10 @@
+[Unit]
+Description=CAN interface helper
+Before=kuksa-dbc-feeder.service
+
+[Service]
+ExecStart=/usr/sbin/can-dev-helper.sh
+Type=oneshot
+
+[Install]
+WantedBy=multi-user.target
diff --git a/recipes-connectivity/kuksa-val/can-dev-helper/can-dev-helper.sh b/recipes-connectivity/kuksa-val/can-dev-helper/can-dev-helper.sh
new file mode 100644
index 000000000..de9894d76
--- /dev/null
+++ b/recipes-connectivity/kuksa-val/can-dev-helper/can-dev-helper.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+#
+# Script to bring up CAN interface configured for the kuksa.val
+# CAN feeder in /etc/kuksa-dbc-feeder/dbc_feeder.ini as vcan
+# interfaces if no physical interface is present.
+#
+
+vcan_up() {
+    if [ -n "$1" ]; then
+        echo "Bringing up $1 as virtual CAN device"
+        ip link add dev $1 type vcan
+        ip link set up $1
+    fi
+}
+
+CONF=/etc/kuksa-dbc-feeder/config.ini
+
+if [ ! -f $CONF ]; then
+    exit 0
+fi
+
+# Ideally the parsing would take the "[can]" section into
+# account, but this should work for now.
+interface=$(grep ^port= $CONF |cut -d= -f2 |tr -d '"')
+if [ -n "$interface" ]; then
+    echo "Checking $interface"
+    if ! ifconfig $interface >/dev/null 2>&1; then
+        vcan_up $interface
+    fi
+fi
+
+exit 0