TELCODOCS-1872: New procedure topic to expose mtu, and addition of this topic to the assembly

TELCODOCS-1872: New procedure topic to expose mtu updated

TELCODOCS-1872: New procedure topic to expose mtu codeblock updated

TELCODOCS-1872: QE & Dev feedback applied

TELCODOCS-1872: Peer review feedback applied

TELCODOCS-1872: Peer review #2 feedback applied

TELCODOCS-1872: Peer review squad feedback applied

TELCODOCS-1872: Reviewer feedback applied

Author: Padraig O'Grady

modules/nw-sriov-expose-mtu.adoc

@@ -0,0 +1,71 @@
+// Module included in the following assemblies:
+//
+// * networking/hardware_networks/add-pod.adoc
+
+:_mod-docs-content-type: PROCEDURE
+[id="nw-sriov-expose-mtu_{context}"]
+= Exposing MTU for vfio-pci SR-IOV devices to pod
+
+After adding a pod to an additional network, you can check that the MTU is available for the SR-IOV network.
+
+.Procedure
+
+. Check that the pod annotation includes MTU by running the following command:
++
+[source,terminal]
+----
+$ oc describe pod example-pod
+----
+The following example shows the sample output:
++
+[source,text]
+----
+"mac": "20:04:0f:f1:88:01",
+       "mtu": 1500,
+       "dns": {},
+       "device-info": {
+         "type": "pci",
+         "version": "1.1.0",
+         "pci": {
+           "pci-address": "0000:86:01.3"
+    }
+  }
+----
+
+. Verify that the MTU is available in `/etc/podnetinfo/` inside the pod by running the following command:
++
+[source,terminal]
+----
+$ oc exec example-pod -n sriov-tests -- cat /etc/podnetinfo/annotations | grep mtu
+----
+The following example shows the sample output:
++
+[source,text]
+----
+k8s.v1.cni.cncf.io/network-status="[{
+    \"name\": \"ovn-kubernetes\",
+    \"interface\": \"eth0\",
+    \"ips\": [
+        \"10.131.0.67\"
+    ],
+    \"mac\": \"0a:58:0a:83:00:43\",
+    \"default\": true,
+    \"dns\": {}
+    },{
+    \"name\": \"sriov-tests/sriov-nic-1\",
+    \"interface\": \"net1\",
+    \"ips\": [
+        \"192.168.10.1\"
+    ],
+    \"mac\": \"20:04:0f:f1:88:01\",
+    \"mtu\": 1500,
+    \"dns\": {},
+    \"device-info\": {
+        \"type\": \"pci\",
+        \"version\": \"1.1.0\",
+        \"pci\": {
+            \"pci-address\": \"0000:86:01.3\"
+        }
+    }
+    }]"
+----

networking/hardware_networks/add-pod.adoc

@@ -12,6 +12,8 @@ include::modules/nw-sriov-runtime-config.adoc[leveloffset=+1]
 
 include::modules/nw-multus-add-pod.adoc[leveloffset=+1]
 
+include::modules/nw-sriov-expose-mtu.adoc[leveloffset=+2]
+
 include::modules/nw-sriov-topology-manager.adoc[leveloffset=+1]
 
 include::modules/nw-openstack-sr-iov-testpmd-pod.adoc[leveloffset=+1]