Add switchdev-bind service

Switchdev-bind service rebinds VF to its driver and executes
after NetworkManager service, this is required for features
such as VF LAG to take effect when bond or other network
configurtion are configured through NetworkManager service.

Signed-off-by: Zenghui Shi <[email protected]>

bindata/manifests/switchdev-config/files/bind-switchdev.sh.yaml

@@ -0,0 +1,35 @@
+mode: 0755
+overwrite: true
+path: "/usr/local/bin/bind-switchdev.sh"
+contents:
+  inline: |
+    #!/bin/bash
+    set -eux
+    input="/etc/sriov_config.json"
+
+    if [ ! -f $input ]; then
+      echo "File /etc/sriov_config.json not exist."
+      exit
+    fi
+
+    # Required for NetworkManager configuration(e.g. bond) to settle down
+    sleep 3
+
+    jq -c '.interfaces[]' $input | while read iface;
+    do
+      eswitch_mode=$(echo $iface | jq '.eSwitchMode' -r)
+      if [[ "$eswitch_mode" == "switchdev" ]]; then
+        pci_addr=$(echo $iface | jq '.pciAddress' -r)
+        name=$(echo $iface | jq '.name' -r)
+
+        echo "load VF driver for $pci_addr"
+        VfDirs=$(ls /sys/bus/pci/devices/${pci_addr} | grep virtfn)
+
+        # load VF driver
+        for VfDir in $VfDirs
+        do
+          VfPciAddr=$(basename "$( readlink -f /sys/bus/pci/devices/${pci_addr}/$VfDir )")
+          echo $VfPciAddr > /sys/bus/pci/drivers_probe
+        done
+      fi
+    done

bindata/manifests/switchdev-config/files/configure-switchdev.sh.yaml

@@ -67,12 +67,5 @@ contents:
 
         # turn hw-tc-offload on
         /usr/sbin/ethtool -K ${name} hw-tc-offload on
-
-        # load VF driver
-        for VfDir in $VfDirs
-        do
-          VfPciAddr=$(basename "$( readlink -f /sys/bus/pci/devices/${pci_addr}/$VfDir )")
-          echo $VfPciAddr > /sys/bus/pci/drivers_probe
-        done
       fi
     done

bindata/manifests/switchdev-config/switchdev-units/switchdev-bind.yaml

@@ -0,0 +1,19 @@
+contents: |
+  [Unit]
+  Description=Binds SRIOV VFs into switchdev driver
+  # Removal of this file signals firstboot completion
+  ConditionPathExists=!/etc/ignition-machine-config-encapsulated.json
+  # This service is used to move a SRIOV NIC into switchdev mode
+  Wants=NetworkManager.service
+  After=NetworkManager.service
+
+  [Service]
+  Type=oneshot
+  ExecStart=/usr/local/bin/bind-switchdev.sh
+  StandardOutput=journal+console
+  StandardError=journal+console
+
+  [Install]
+  WantedBy=network-online.target
+enabled: true
+name: switchdev-bind.service