add a new container type for l1vh singularity container request (#2215)

* add a new container type for l1vh singularity container request

* feat: adding fields required for backendnetworkinterface NC Request

* fix: add nctype-case to outer switch statement

* feat: new struct to store nicInfo sent by DNC to CNS to support l1vh

* fix: nolint for 2 cases, remove backendnic-id from config

* fix: refactor networkInterfaceInfo

* feat:add NetworkInterfaceInfo details to getallNCResponse in cns, to be used by CNI ADD net-plugin

cns/NetworkContainerContract.go

@@ -51,6 +51,7 @@ const (
 	Basic                  = "Basic"
 	JobObject              = "JobObject"
 	COW                    = "COW" // Container on Windows
+	BackendNICNC           = "BackendNICNC"
 )
 
 // Orchestrator Types
@@ -77,6 +78,8 @@ const (
 	InfraNIC NICType = "InfraNIC"
 	// Delegated VM NICs are projected from VM to container network namespace
 	DelegatedVMNIC NICType = "DelegatedVMNIC"
+	// BackendNIC NICs are used for infiniband nics on a VM
+	BackendNIC NICType = "BackendNIC"
 )
 
 // ChannelMode :- CNS channel modes
@@ -106,16 +109,18 @@ type CreateNetworkContainerRequest struct {
 	AllowNCToHostCommunication bool
 	EndpointPolicies           []NetworkContainerRequestPolicies
 	NCStatus                   v1alpha.NCStatus
+	NetworkInterfaceInfo       NetworkInterfaceInfo //nolint // introducing new field for backendnic, to be used later by cni code
 }
 
 // CreateNetworkContainerRequest implements fmt.Stringer for logging
 func (req *CreateNetworkContainerRequest) String() string {
 	return fmt.Sprintf("CreateNetworkContainerRequest"+
 		"{Version: %s, NetworkContainerType: %s, NetworkContainerid: %s, PrimaryInterfaceIdentifier: %s, "+
 		"LocalIPConfiguration: %+v, IPConfiguration: %+v, SecondaryIPConfigs: %+v, MultitenancyInfo: %+v, "+
-		"AllowHostToNCCommunication: %t, AllowNCToHostCommunication: %t, NCStatus: %s}",
+		"AllowHostToNCCommunication: %t, AllowNCToHostCommunication: %t, NCStatus: %s, NetworkInterfaceInfo: %+v}",
 		req.Version, req.NetworkContainerType, req.NetworkContainerid, req.PrimaryInterfaceIdentifier, req.LocalIPConfiguration,
-		req.IPConfiguration, req.SecondaryIPConfigs, req.MultiTenancyInfo, req.AllowHostToNCCommunication, req.AllowNCToHostCommunication, string(req.NCStatus))
+		req.IPConfiguration, req.SecondaryIPConfigs, req.MultiTenancyInfo, req.AllowHostToNCCommunication, req.AllowNCToHostCommunication,
+		string(req.NCStatus), req.NetworkInterfaceInfo)
 }
 
 // NetworkContainerRequestPolicies - specifies policies associated with create network request
@@ -317,6 +322,11 @@ type MultiTenancyInfo struct {
 	ID        int // This can be vlanid, vxlanid, gre-key etc. (depends on EnacapType).
 }
 
+type NetworkInterfaceInfo struct {
+	NICType    NICType
+	MACAddress string
+}
+
 // IPConfiguration contains details about ip config to provision in the VM.
 type IPConfiguration struct {
 	IPSubnet         IPSubnet
@@ -409,13 +419,14 @@ type GetNetworkContainerResponse struct {
 	Response                   Response
 	AllowHostToNCCommunication bool
 	AllowNCToHostCommunication bool
+	NetworkInterfaceInfo       NetworkInterfaceInfo
 }
 
 type PodIpInfo struct {
 	PodIPConfig                     IPSubnet
 	NetworkContainerPrimaryIPConfig IPConfiguration
 	HostPrimaryIPInfo               HostIPInfo
-	// NICType defines whether NIC is InfraNIC or DelegatedVMNIC
+	// NICType defines whether NIC is InfraNIC or DelegatedVMNIC or BackendNIC
 	NICType       NICType
 	InterfaceName string
 	// MacAddress of interface

cns/restserver/util.go

@@ -163,7 +163,7 @@ func (service *HTTPRestService) saveNetworkContainerGoalState(
 		fallthrough
 	case cns.JobObject:
 		fallthrough
-	case cns.COW:
+	case cns.COW, cns.BackendNICNC:
 		fallthrough
 	case cns.WebApps:
 		switch service.state.OrchestratorType {
@@ -177,7 +177,7 @@ func (service *HTTPRestService) saveNetworkContainerGoalState(
 			fallthrough
 		case cns.AzureFirstParty:
 			fallthrough
-		case cns.WebApps: // todo: Is WebApps an OrchastratorType or ContainerType?
+		case cns.WebApps, cns.BackendNICNC: // todo: Is WebApps an OrchastratorType or ContainerType?
 			podInfo, err := cns.UnmarshalPodInfo(req.OrchestratorContext)
 			if err != nil {
 				errBuf := fmt.Sprintf("Unmarshalling %s failed with error %v", req.NetworkContainerType, err)
@@ -501,6 +501,7 @@ func (service *HTTPRestService) getAllNetworkContainerResponses(
 			LocalIPConfiguration:       savedReq.LocalIPConfiguration,
 			AllowHostToNCCommunication: savedReq.AllowHostToNCCommunication,
 			AllowNCToHostCommunication: savedReq.AllowNCToHostCommunication,
+			NetworkInterfaceInfo:       savedReq.NetworkInterfaceInfo,
 		}
 
 		// If the NC version check wasn't skipped, take into account the VFP programming status when returning the response