Missing IE Forwarding Parameters

[louisroyer]

In the PFCP Session Establishment Request message, the 2nd Create FAR IE is missing the mandatory (because Apply Action is present with the field FORW set to 1) Forwarding Parameters IE.

Wireshark screenshot:

I use the following config: smf-config.yaml

info:
  version: 1.0.2
  description: SMF initial local configuration

configuration:
  smfName: SMF1
  sbi:
    scheme: http
    registerIPv4: smf1.sbi-net # IP used to register to NRF
    bindingIPv4: 10.0.211.3  # IP used to bind the service
    port: 8000
    tls:
      key: config/TLS/smf.key
      pem: config/TLS/smf.pem
  serviceNameList:
    - nsmf-pdusession
    - nsmf-event-exposure
    - nsmf-oam
  snssaiInfos:
    - sNssai:
        sst: 1
        sd: 010203
      dnnInfos:
        - dnn: sliceA
          dns: 
            ipv4: 10.0.224.3
            ipv6: 2001:4860:4860::8888
  plmnList:
    - mcc: "001"
      mnc: "01"

  pfcp:
    addr: 10.0.210.2
  userplaneInformation:
    upNodes:
      ran-area1-1:
        type: AN

      upf-mec-area1:
        type: UPF
        nodeID: 10.0.213.3
        sNssaiUpfInfos:
          - sNssai:
              sst: 1
              sd: 010203
            dnnUpfInfoList:
              - dnn: sliceA
        interfaces:
          - interfaceType: N3
            endpoints:
              - 10.0.201.3
            networkInstance: sliceA
          - interfaceType: N9
            endpoints:
              - 10.0.215.2
            networkInstance: sliceA

      upf-sliceA:
        type: UPF
        nodeID: 10.0.210.3
        sNssaiUpfInfos:
          - sNssai:
              sst: 1
              sd: 010203
            dnnUpfInfoList:
              - dnn: sliceA
                pools:
                  - cidr: 10.0.222.0/24
        interfaces:
          - interfaceType: N9
            endpoints:
              - 10.0.216.2
            networkInstance: sliceA
    links:
      - A: ran-area1-1
        B: upf-mec-area1
      - A: upf-mec-area1
        B: upf-sliceA

  nrfUri: http://nrf.sbi-net:8000 
  ulcl: true

logger:
  SMF:
    debugLevel: trace
    ReportCaller: false
  NAS:
    debugLevel: info
    ReportCaller: false
  NGAP:
    debugLevel: info
    ReportCaller: false
  Aper:
    debugLevel: info
    ReportCaller: false
  PFCP:
    debugLevel: trace
    ReportCaller: false

ue-routing.yaml

info:
  version: 1.0.1
  description: Routing information for UE

ueRoutingInfo: # the list of UE routing information

  MEH:
    members:
      - imsi-001010000000000
      - imsi-001010000000001

    topology:
      - A: ran-area1-1
        B: upf-mec-area1
      - A: upf-mec-area1
        B: upf-sliceA
    specificPath:
      - dest: 10.0.224.3/32
        path: [upf-mec-area1, upf-mec-area1]
      - dest: 10.0.222.0/24
        path: [upf-mec-area1, upf-mec-area1]

[ardzoht]

@free5gc-org This is also happening with even single UPF setup, second CreateFAR is lacking Forwarding Parameters IE,

[tim-ywliu]

Fixed in https://github.com/free5gc/smf/pull/61