Validate IPv4 support in gRIBI.

• Connect ATE port-1 to DUT port-1, ATE port-2 to DUT port-2, and ATE port-3 to DUT port-3.
• Establish gRIBI client connection with DUT, negotiating RIB_AND_FIB_ACK as the requested ack_type and persistence mode PRESERVE. make it become leader. Flush all entries after each case.
• Using gRIBI Modify RPC install the following IPv4Entry sets, and validate the specified behaviours:
  • Single IPv4Entry -> NHG -> NH.
    • Install 198.51.100.0/24 to NextHopGroup containing one NextHop specified to ATE port-2.
    • Forward packets between ATE port-1 and ATE port-2 (destined to 198.51.100.0/24 ) and determine that packets are forwarded successfully:
  • Single IPv4Entry -> NHG -> multiple NHs.
    • Install 198.51.100.0/24 to NextHopGroup containing two NextHop entries specified to ATE ports 2 and 3.
    • Validate that packets forwarded between ATE ports 1 and (2 and 3), ensuring that traffic is forwarded.
  • Single IPv4Entry -> NHG -> multiple NHs with MAC override.
    • Install 198.51.100.0/24 to NextHopGroup containing two NextHop entries specified to ATE ports 2 and 3, and override the destination MAC to a specified value.
    • Validate that packets forwarded between ATE ports 1 and (2 and 3)
    • TODO: validate the ATE received packets are of the expected destination MAC address.
  • Single IPv4Entry -> NHG -> non-existent NH.
    • Send a Modify() containing 2 AFTOperations that install 198.51.100.0/24 to NextHopGroup containing next-hops that do not exist. Validate that FAILED error is received for all the 2 operations. Ensure that traffic to 198.51.100.0/24 is blackholed.
  • Single IPv4Entry -> NHG -> NH with down interface
    • Install 198.51.100.0/24 to NextHopGroup containing a NextHop that references (interface_ref) a down interface and override the destination MAC (mac_address), ensure that FIB_PROGRAMMED is returned.

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N/A

• gRIBI
  • Modify()
    • ModifyRequest:
      • AFTOperation:
        • id
        • network_instance
        • op
        • Ipv4
          • Ipv4EntryKey: prefix
          • Ipv4Entry: next_hop_group
        • next_hop_group
          • NextHopGroupKey: id
          • NextHopGroup: next_hop
        • next_hop
          • NextHopKey: id
          • NextHop:
            • ip_address
    • ModifyResponse:
      • AFTResult:
        • id
        • status