[DPU] Add CLI to trigger and dump flows

[vivekrnv]

What I did

Add CLI to trigger and dump flows to stdout

sonic-dpu-flow-dump.py --help
usage: sonic-dpu-flow-dump.py [-h] [--no-flow-state] [-f] [-t TIMEOUT] [-m MAX_FLOWS] [-v]

Trigger DPU flow dump session and dump the flows to stdout

options:
  -h, --help            show this help message and exit
  --no-flow-state       Disable flow state (default: enabled)
  -f, --file-only       Print only the output file path
  -t, --timeout TIMEOUT
                        Timeout in seconds (default: 60)
  -m, --max-flows MAX_FLOWS
                        Maximum number of flows to dump (default: 1000)
  -v, --verbose         Enable verbose output

How I did it

Trigger DUMP session, wait until the status is completed and dump the flows

How to verify it

root@sonic:/home/admin# ./sonic-dpu-flow-dump.py
[
  {
    "SAI_FLOW_ENTRY_ATTR_ACTION": "SAI_FLOW_ENTRY_ACTION_SET_FLOW_ENTRY_ATTR",
    "SAI_FLOW_ENTRY_ATTR_VERSION": "1",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_VNET_ID": "100",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_SIP": "3.2.1.0",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_DIP": "101.1.2.3",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_DASH_ENCAPSULATION": "SAI_DASH_ENCAPSULATION_NVGRE",
    "SAI_FLOW_ENTRY_ATTR_DASH_DIRECTION": "SAI_DASH_DIRECTION_OUTBOUND",
    "SAI_FLOW_ENTRY_ATTR_SIP": "fd41:108:20:d107:64:ff71:a00:b",
    "SAI_FLOW_ENTRY_ATTR_DIP": "2603:10e1:100:2::3401:203",
    "SAI_FLOW_ENTRY_ATTR_DASH_FLOW_ACTION": "65",
    "SAI_FLOW_ENTRY_ATTR_IP_ADDR_FAMILY": "SAI_IP_ADDR_FAMILY_IPV4",
    "SAI_FLOW_ENTRY_ATTR_DASH_FLOW_SYNC_STATE": "SAI_DASH_FLOW_SYNC_STATE_FLOW_SYNCED",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_SMAC": "B0:CF:0E:0F:09:DE",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_DMAC": "B0:CF:0E:0F:09:00",
    "SAI_FLOW_ENTRY_ATTR_METER_CLASS": "3634",
    "SAI_FLOW_ENTRY_ATTR_IS_UNIDIRECTIONAL_FLOW": "true",
    "DST_IP": "10.2.0.100",
    "DST_PORT": 55057,
    "ENI_MAC": "F4:93:9F:EF:C4:7E",
    "EPOCH": 1771440982,
    "IP_PROTO": 17,
    "SRC_IP": "10.0.0.11",
    "SRC_PORT": 34074,
    "VNET_ID": 0
  },
  {
    "SAI_FLOW_ENTRY_ATTR_ACTION": "SAI_FLOW_ENTRY_ACTION_SET_FLOW_ENTRY_ATTR",
    "SAI_FLOW_ENTRY_ATTR_VERSION": "1",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_VNET_ID": "4321",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_SIP": "3.2.1.0",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_DIP": "25.1.1.1",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_DASH_ENCAPSULATION": "SAI_DASH_ENCAPSULATION_VXLAN",
    "SAI_FLOW_ENTRY_ATTR_DASH_DIRECTION": "SAI_DASH_DIRECTION_INBOUND",
    "SAI_FLOW_ENTRY_ATTR_SIP": "10.2.0.100",
    "SAI_FLOW_ENTRY_ATTR_DIP": "10.0.0.11",
    "SAI_FLOW_ENTRY_ATTR_DASH_FLOW_ACTION": "129",
    "SAI_FLOW_ENTRY_ATTR_IP_ADDR_FAMILY": "SAI_IP_ADDR_FAMILY_IPV6",
    "SAI_FLOW_ENTRY_ATTR_DASH_FLOW_SYNC_STATE": "SAI_DASH_FLOW_SYNC_STATE_FLOW_SYNCED",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_SMAC": "B0:CF:0E:0F:09:DE",
    "SAI_FLOW_ENTRY_ATTR_UNDERLAY0_DMAC": "B0:CF:0E:0F:09:00",
    "SAI_FLOW_ENTRY_ATTR_METER_CLASS": "3634",
    "SAI_FLOW_ENTRY_ATTR_IS_UNIDIRECTIONAL_FLOW": "true",
    "DST_IP": "fd41:108:20:d107:64:ff71:a00:b",
    "DST_PORT": 34074,
    "ENI_MAC": "F4:93:9F:EF:C4:7E",
    "EPOCH": 1771440982,
    "IP_PROTO": 17,
    "SRC_IP": "2603:10e1:100:2::3401:203",
    "SRC_PORT": 55057,
    "VNET_ID": 0
  }
]

root@sonic:/home/admin# ./sonic-dpu-flow-dump.py -f
/var/dump/flows/flow_dump_0x0018008000000035.jsonl.gz

Previous command output (if the output of a command-line utility has changed)

New command output (if the output of a command-line utility has changed)

[mssonicbld]

/azp run

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