1 files changed, 34 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-common/recipes-core/dhcp-check/dhcp-check/dhcp-check.sh b/meta-openbmc-mods/meta-common/recipes-core/dhcp-check/dhcp-check/dhcp-check.sh
new file mode 100644
index 000000000..e2ee80d89
--- /dev/null
+++ b/meta-openbmc-mods/meta-common/recipes-core/dhcp-check/dhcp-check/dhcp-check.sh
@@ -0,0 +1,34 @@
+#!/bin/sh
+
+# if eth0 is configured DHCP and the interface is up (has carrier) and there is
+# no IP address after 2 mins, restart the interface to try again
+
+LOG_TAG=dhcp-check
+CHK_DELAY=120
+CFG_DELAY=60
+IFC=eth0
+NETWORK_CONFIG=/etc/systemd/network/00-bmc-${IFC}.network
+
+carrier=$(cat /sys/class/net/${IFC}/carrier 2>/dev/null)
+if [[ "$carrier" == "1" ]]; then
+    dhcp=$(egrep -c "DHCP=(true|ipv4)" $NETWORK_CONFIG)
+    if [[ "$dhcp" != "0" ]]; then
+        # Give time for DHCP address to be configured
+        sleep $CHK_DELAY
+
+        hasip=$(ip addr show dev ${IFC} | grep -c dynamic)
+        if [[ "$hasip" == "0" ]]; then
+            logger -t $LOG_TAG \
+                "$IFC: No DHCP address after ${CHK_DELAY}s; reconfigure"
+            networkctl reconfigure $IFC
+
+            # give time for network to come up and acquire DHCP address
+            sleep $CFG_DELAY
+        fi
+
+        IP=$(ip addr show dev ${IFC} | sed -n '/dynamic/s/^.*inet \([0-9\.]*\).*$/\1/p')
+        logger -t $LOG_TAG "$IFC: DHCP address $IP"
+    fi
+fi
+
+exit 0