[v2,2/6] dts: add traffic generator config

Message ID 20230717110709.39220-3-juraj.linkes@pantheon.tech (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Headers
Series dts: tg abstractions and scapy tg |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Juraj Linkeš July 17, 2023, 11:07 a.m. UTC
  Node configuration - where to connect, what ports to use and what TG to
use.

Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
---
 dts/conf.yaml                              | 26 ++++++-
 dts/framework/config/__init__.py           | 87 +++++++++++++++++++---
 dts/framework/config/conf_yaml_schema.json | 29 +++++++-
 dts/framework/dts.py                       | 12 +--
 dts/framework/testbed_model/node.py        |  4 +-
 dts/framework/testbed_model/sut_node.py    |  6 +-
 6 files changed, 141 insertions(+), 23 deletions(-)
  

Comments

Jeremy Spewock July 18, 2023, 3:55 p.m. UTC | #1
Hey Juraj,

These changes look good to me, I just had one question. Is the plan to make
specifying a TG always required or optional for cases where it isn't
required? It seems like it is written now as something that is required for
every execution. I don't think this is necessarily a bad thing, I just
wonder if it would be beneficial at all to make it optional to allow for
executions that don't utilize a TG to just not specify it.

On Mon, Jul 17, 2023 at 7:07 AM Juraj Linkeš <juraj.linkes@pantheon.tech>
wrote:

> Node configuration - where to connect, what ports to use and what TG to
> use.
>
> Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
> ---
>  dts/conf.yaml                              | 26 ++++++-
>  dts/framework/config/__init__.py           | 87 +++++++++++++++++++---
>  dts/framework/config/conf_yaml_schema.json | 29 +++++++-
>  dts/framework/dts.py                       | 12 +--
>  dts/framework/testbed_model/node.py        |  4 +-
>  dts/framework/testbed_model/sut_node.py    |  6 +-
>  6 files changed, 141 insertions(+), 23 deletions(-)
>
> diff --git a/dts/conf.yaml b/dts/conf.yaml
> index 3a5d87cb49..7f089022ba 100644
> --- a/dts/conf.yaml
> +++ b/dts/conf.yaml
> @@ -13,10 +13,11 @@ executions:
>      skip_smoke_tests: false # optional flag that allow you to skip smoke
> tests
>      test_suites:
>        - hello_world
> -    system_under_test:
> +    system_under_test_node:
>        node_name: "SUT 1"
>        vdevs: # optional; if removed, vdevs won't be used in the execution
>          - "crypto_openssl"
> +    traffic_generator_node: "TG 1"
>  nodes:
>    - name: "SUT 1"
>      hostname: sut1.change.me.localhost
> @@ -40,3 +41,26 @@ nodes:
>          os_driver: i40e
>          peer_node: "TG 1"
>          peer_pci: "0000:00:08.1"
> +  - name: "TG 1"
> +    hostname: tg1.change.me.localhost
> +    user: dtsuser
> +    arch: x86_64
> +    os: linux
> +    lcores: ""
> +    ports:
> +      - pci: "0000:00:08.0"
> +        os_driver_for_dpdk: rdma
> +        os_driver: rdma
> +        peer_node: "SUT 1"
> +        peer_pci: "0000:00:08.0"
> +      - pci: "0000:00:08.1"
> +        os_driver_for_dpdk: rdma
> +        os_driver: rdma
> +        peer_node: "SUT 1"
> +        peer_pci: "0000:00:08.1"
> +    use_first_core: false
> +    hugepages:  # optional; if removed, will use system hugepage
> configuration
> +        amount: 256
> +        force_first_numa: false
> +    traffic_generator:
> +        type: SCAPY
> diff --git a/dts/framework/config/__init__.py
> b/dts/framework/config/__init__.py
> index fad56cc520..72aa021b97 100644
> --- a/dts/framework/config/__init__.py
> +++ b/dts/framework/config/__init__.py
> @@ -13,7 +13,7 @@
>  from dataclasses import dataclass
>  from enum import Enum, auto, unique
>  from pathlib import PurePath
> -from typing import Any, TypedDict
> +from typing import Any, TypedDict, Union
>
>  import warlock  # type: ignore
>  import yaml
> @@ -55,6 +55,11 @@ class Compiler(StrEnum):
>      msvc = auto()
>
>
> +@unique
> +class TrafficGeneratorType(StrEnum):
> +    SCAPY = auto()
> +
> +
>  # Slots enables some optimizations, by pre-allocating space for the
> defined
>  # attributes in the underlying data structure.
>  #
> @@ -79,6 +84,29 @@ class PortConfig:
>      def from_dict(node: str, d: dict) -> "PortConfig":
>          return PortConfig(node=node, **d)
>
> +    def __str__(self) -> str:
> +        return f"Port {self.pci} on node {self.node}"
> +
> +
> +@dataclass(slots=True, frozen=True)
> +class TrafficGeneratorConfig:
> +    traffic_generator_type: TrafficGeneratorType
> +
> +    @staticmethod
> +    def from_dict(d: dict):
> +        # This looks useless now, but is designed to allow expansion to
> traffic
> +        # generators that require more configuration later.
> +        match TrafficGeneratorType(d["type"]):
> +            case TrafficGeneratorType.SCAPY:
> +                return ScapyTrafficGeneratorConfig(
> +                    traffic_generator_type=TrafficGeneratorType.SCAPY
> +                )
> +
> +
> +@dataclass(slots=True, frozen=True)
> +class ScapyTrafficGeneratorConfig(TrafficGeneratorConfig):
> +    pass
> +
>
>  @dataclass(slots=True, frozen=True)
>  class NodeConfiguration:
> @@ -90,17 +118,17 @@ class NodeConfiguration:
>      os: OS
>      lcores: str
>      use_first_core: bool
> -    memory_channels: int
>      hugepages: HugepageConfiguration | None
>      ports: list[PortConfig]
>
>      @staticmethod
> -    def from_dict(d: dict) -> "NodeConfiguration":
> +    def from_dict(d: dict) -> Union["SutNodeConfiguration",
> "TGNodeConfiguration"]:
>          hugepage_config = d.get("hugepages")
>          if hugepage_config:
>              if "force_first_numa" not in hugepage_config:
>                  hugepage_config["force_first_numa"] = False
>              hugepage_config = HugepageConfiguration(**hugepage_config)
> +
>          common_config = {
>              "name": d["name"],
>              "hostname": d["hostname"],
> @@ -110,12 +138,31 @@ def from_dict(d: dict) -> "NodeConfiguration":
>              "os": OS(d["os"]),
>              "lcores": d.get("lcores", "1"),
>              "use_first_core": d.get("use_first_core", False),
> -            "memory_channels": d.get("memory_channels", 1),
>              "hugepages": hugepage_config,
>              "ports": [PortConfig.from_dict(d["name"], port) for port in
> d["ports"]],
>          }
>
> -        return NodeConfiguration(**common_config)
> +        if "traffic_generator" in d:
> +            return TGNodeConfiguration(
> +                traffic_generator=TrafficGeneratorConfig.from_dict(
> +                    d["traffic_generator"]
> +                ),
> +                **common_config,
> +            )
> +        else:
> +            return SutNodeConfiguration(
> +                memory_channels=d.get("memory_channels", 1),
> **common_config
> +            )
> +
> +
> +@dataclass(slots=True, frozen=True)
> +class SutNodeConfiguration(NodeConfiguration):
> +    memory_channels: int
> +
> +
> +@dataclass(slots=True, frozen=True)
> +class TGNodeConfiguration(NodeConfiguration):
> +    traffic_generator: ScapyTrafficGeneratorConfig
>
>
>  @dataclass(slots=True, frozen=True)
> @@ -194,23 +241,40 @@ class ExecutionConfiguration:
>      perf: bool
>      func: bool
>      test_suites: list[TestSuiteConfig]
> -    system_under_test: NodeConfiguration
> +    system_under_test_node: SutNodeConfiguration
> +    traffic_generator_node: TGNodeConfiguration
>      vdevs: list[str]
>      skip_smoke_tests: bool
>
>      @staticmethod
> -    def from_dict(d: dict, node_map: dict) -> "ExecutionConfiguration":
> +    def from_dict(
> +        d: dict, node_map: dict[str, Union[SutNodeConfiguration |
> TGNodeConfiguration]]
> +    ) -> "ExecutionConfiguration":
>          build_targets: list[BuildTargetConfiguration] = list(
>              map(BuildTargetConfiguration.from_dict, d["build_targets"])
>          )
>          test_suites: list[TestSuiteConfig] = list(
>              map(TestSuiteConfig.from_dict, d["test_suites"])
>          )
> -        sut_name = d["system_under_test"]["node_name"]
> +        sut_name = d["system_under_test_node"]["node_name"]
>          skip_smoke_tests = d.get("skip_smoke_tests", False)
>          assert sut_name in node_map, f"Unknown SUT {sut_name} in
> execution {d}"
> +        system_under_test_node = node_map[sut_name]
> +        assert isinstance(
> +            system_under_test_node, SutNodeConfiguration
> +        ), f"Invalid SUT configuration {system_under_test_node}"
> +
> +        tg_name = d["traffic_generator_node"]
> +        assert tg_name in node_map, f"Unknown TG {tg_name} in execution
> {d}"
> +        traffic_generator_node = node_map[tg_name]
> +        assert isinstance(
> +            traffic_generator_node, TGNodeConfiguration
> +        ), f"Invalid TG configuration {traffic_generator_node}"
> +
>
         vdevs = (
> -            d["system_under_test"]["vdevs"] if "vdevs" in
> d["system_under_test"] else []
> +            d["system_under_test_node"]["vdevs"]
> +            if "vdevs" in d["system_under_test_node"]
> +            else []
>          )
>          return ExecutionConfiguration(
>              build_targets=build_targets,
> @@ -218,7 +282,8 @@ def from_dict(d: dict, node_map: dict) ->
> "ExecutionConfiguration":
>              func=d["func"],
>              skip_smoke_tests=skip_smoke_tests,
>              test_suites=test_suites,
> -            system_under_test=node_map[sut_name],
> +            system_under_test_node=system_under_test_node,
> +            traffic_generator_node=traffic_generator_node,
>              vdevs=vdevs,
>          )
>
> @@ -229,7 +294,7 @@ class Configuration:
>
>      @staticmethod
>      def from_dict(d: dict) -> "Configuration":
> -        nodes: list[NodeConfiguration] = list(
> +        nodes: list[Union[SutNodeConfiguration | TGNodeConfiguration]] =
> list(
>              map(NodeConfiguration.from_dict, d["nodes"])
>          )
>          assert len(nodes) > 0, "There must be a node to test"
> diff --git a/dts/framework/config/conf_yaml_schema.json
> b/dts/framework/config/conf_yaml_schema.json
> index 61f52b4365..76df84840a 100644
> --- a/dts/framework/config/conf_yaml_schema.json
> +++ b/dts/framework/config/conf_yaml_schema.json
> @@ -164,6 +164,11 @@
>          "amount"
>        ]
>      },
> +    "mac_address": {
> +      "type": "string",
> +      "description": "A MAC address",
> +      "pattern": "^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$"
> +    },
>      "pci_address": {
>        "type": "string",
>        "pattern":
> "^[\\da-fA-F]{4}:[\\da-fA-F]{2}:[\\da-fA-F]{2}.\\d:?\\w*$"
> @@ -286,6 +291,22 @@
>                ]
>              },
>              "minimum": 1
> +          },
> +          "traffic_generator": {
> +            "oneOf": [
> +              {
> +                "type": "object",
> +                "description": "Scapy traffic generator. Used for
> functional testing.",
> +                "properties": {
> +                  "type": {
> +                    "type": "string",
> +                    "enum": [
> +                      "SCAPY"
> +                    ]
> +                  }
> +                }
> +              }
> +            ]
>            }
>          },
>          "additionalProperties": false,
> @@ -336,7 +357,7 @@
>              "description": "Optional field that allows you to skip smoke
> testing",
>              "type": "boolean"
>            },
> -          "system_under_test": {
> +          "system_under_test_node": {
>              "type":"object",
>              "properties": {
>                "node_name": {
> @@ -353,6 +374,9 @@
>              "required": [
>                "node_name"
>              ]
> +          },
> +          "traffic_generator_node": {
> +            "$ref": "#/definitions/node_name"
>            }
>          },
>          "additionalProperties": false,
> @@ -361,7 +385,8 @@
>            "perf",
>            "func",
>            "test_suites",
> -          "system_under_test"
> +          "system_under_test_node",
> +          "traffic_generator_node"
>          ]
>        },
>        "minimum": 1
> diff --git a/dts/framework/dts.py b/dts/framework/dts.py
> index 7b09d8fba8..372bc72787 100644
> --- a/dts/framework/dts.py
> +++ b/dts/framework/dts.py
> @@ -38,17 +38,17 @@ def run_all() -> None:
>          # for all Execution sections
>          for execution in CONFIGURATION.executions:
>              sut_node = None
> -            if execution.system_under_test.name in nodes:
> +            if execution.system_under_test_node.name in nodes:
>                  # a Node with the same name already exists
> -                sut_node = nodes[execution.system_under_test.name]
> +                sut_node = nodes[execution.system_under_test_node.name]
>              else:
>                  # the SUT has not been initialized yet
>                  try:
> -                    sut_node = SutNode(execution.system_under_test)
> +                    sut_node = SutNode(execution.system_under_test_node)
>                      result.update_setup(Result.PASS)
>                  except Exception as e:
>                      dts_logger.exception(
> -                        f"Connection to node
> {execution.system_under_test} failed."
> +                        f"Connection to node
> {execution.system_under_test_node} failed."
>                      )
>                      result.update_setup(Result.FAIL, e)
>                  else:
> @@ -87,7 +87,9 @@ def _run_execution(
>      Run the given execution. This involves running the execution setup as
> well as
>      running all build targets in the given execution.
>      """
> -    dts_logger.info(f"Running execution with SUT '{
> execution.system_under_test.name}'.")
> +    dts_logger.info(
> +        f"Running execution with SUT '{
> execution.system_under_test_node.name}'."
> +    )
>      execution_result = result.add_execution(sut_node.config,
> sut_node.node_info)
>
>      try:
> diff --git a/dts/framework/testbed_model/node.py
> b/dts/framework/testbed_model/node.py
> index c5147e0ee6..d2d55d904e 100644
> --- a/dts/framework/testbed_model/node.py
> +++ b/dts/framework/testbed_model/node.py
> @@ -48,6 +48,8 @@ def __init__(self, node_config: NodeConfiguration):
>          self._logger = getLogger(self.name)
>          self.main_session = create_session(self.config, self.name,
> self._logger)
>
> +        self._logger.info(f"Connected to node: {self.name}")
> +
>          self._get_remote_cpus()
>          # filter the node lcores according to user config
>          self.lcores = LogicalCoreListFilter(
> @@ -56,8 +58,6 @@ def __init__(self, node_config: NodeConfiguration):
>
>          self._other_sessions = []
>
> -        self._logger.info(f"Created node: {self.name}")
> -
>      def set_up_execution(self, execution_config: ExecutionConfiguration)
> -> None:
>          """
>          Perform the execution setup that will be done for each execution
> diff --git a/dts/framework/testbed_model/sut_node.py
> b/dts/framework/testbed_model/sut_node.py
> index 53953718a1..bcad364435 100644
> --- a/dts/framework/testbed_model/sut_node.py
> +++ b/dts/framework/testbed_model/sut_node.py
> @@ -13,8 +13,8 @@
>      BuildTargetConfiguration,
>      BuildTargetInfo,
>      InteractiveApp,
> -    NodeConfiguration,
>      NodeInfo,
> +    SutNodeConfiguration,
>  )
>  from framework.remote_session import (
>      CommandResult,
> @@ -83,6 +83,7 @@ class SutNode(Node):
>      Another key capability is building DPDK according to given build
> target.
>      """
>
> +    config: SutNodeConfiguration
>      _dpdk_prefix_list: list[str]
>      _dpdk_timestamp: str
>      _build_target_config: BuildTargetConfiguration | None
> @@ -95,7 +96,7 @@ class SutNode(Node):
>      _node_info: NodeInfo | None
>      _compiler_version: str | None
>
> -    def __init__(self, node_config: NodeConfiguration):
> +    def __init__(self, node_config: SutNodeConfiguration):
>          super(SutNode, self).__init__(node_config)
>          self._dpdk_prefix_list = []
>          self._build_target_config = None
> @@ -110,6 +111,7 @@ def __init__(self, node_config: NodeConfiguration):
>          self._dpdk_version = None
>          self._node_info = None
>          self._compiler_version = None
> +        self._logger.info(f"Created node: {self.name}")
>
>      @property
>      def _remote_dpdk_dir(self) -> PurePath:
> --
> 2.34.1
>
>
  
Juraj Linkeš July 19, 2023, 12:57 p.m. UTC | #2
On Tue, Jul 18, 2023 at 5:55 PM Jeremy Spewock <jspewock@iol.unh.edu> wrote:
>
> Hey Juraj,
>
> These changes look good to me, I just had one question. Is the plan to make specifying a TG always required or optional for cases where it isn't required? It seems like it is written now as something that is required for every execution. I don't think this is necessarily a bad thing, I just wonder if it would be beneficial at all to make it optional to allow for executions that don't utilize a TG to just not specify it.
>

If there's a legitimate use case (or we can imagine one) for this in
CI (or anywhere else), then we'd want to make a TG node optional.
Let's leave the implementation as is and make the TG node optional
once we discuss it further in the CI call. We talked about a mechanism
to skip test cases based on the testbed capabilities and I think this
would fit into that (as TG could be viewed as a testbed capability).

> On Mon, Jul 17, 2023 at 7:07 AM Juraj Linkeš <juraj.linkes@pantheon.tech> wrote:
>>
>> Node configuration - where to connect, what ports to use and what TG to
>> use.
>>
>> Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
>> ---
>>  dts/conf.yaml                              | 26 ++++++-
>>  dts/framework/config/__init__.py           | 87 +++++++++++++++++++---
>>  dts/framework/config/conf_yaml_schema.json | 29 +++++++-
>>  dts/framework/dts.py                       | 12 +--
>>  dts/framework/testbed_model/node.py        |  4 +-
>>  dts/framework/testbed_model/sut_node.py    |  6 +-
>>  6 files changed, 141 insertions(+), 23 deletions(-)
>>
>> diff --git a/dts/conf.yaml b/dts/conf.yaml
>> index 3a5d87cb49..7f089022ba 100644
>> --- a/dts/conf.yaml
>> +++ b/dts/conf.yaml
>> @@ -13,10 +13,11 @@ executions:
>>      skip_smoke_tests: false # optional flag that allow you to skip smoke tests
>>      test_suites:
>>        - hello_world
>> -    system_under_test:
>> +    system_under_test_node:
>>        node_name: "SUT 1"
>>        vdevs: # optional; if removed, vdevs won't be used in the execution
>>          - "crypto_openssl"
>> +    traffic_generator_node: "TG 1"
>>  nodes:
>>    - name: "SUT 1"
>>      hostname: sut1.change.me.localhost
>> @@ -40,3 +41,26 @@ nodes:
>>          os_driver: i40e
>>          peer_node: "TG 1"
>>          peer_pci: "0000:00:08.1"
>> +  - name: "TG 1"
>> +    hostname: tg1.change.me.localhost
>> +    user: dtsuser
>> +    arch: x86_64
>> +    os: linux
>> +    lcores: ""
>> +    ports:
>> +      - pci: "0000:00:08.0"
>> +        os_driver_for_dpdk: rdma
>> +        os_driver: rdma
>> +        peer_node: "SUT 1"
>> +        peer_pci: "0000:00:08.0"
>> +      - pci: "0000:00:08.1"
>> +        os_driver_for_dpdk: rdma
>> +        os_driver: rdma
>> +        peer_node: "SUT 1"
>> +        peer_pci: "0000:00:08.1"
>> +    use_first_core: false
>> +    hugepages:  # optional; if removed, will use system hugepage configuration
>> +        amount: 256
>> +        force_first_numa: false
>> +    traffic_generator:
>> +        type: SCAPY
>> diff --git a/dts/framework/config/__init__.py b/dts/framework/config/__init__.py
>> index fad56cc520..72aa021b97 100644
>> --- a/dts/framework/config/__init__.py
>> +++ b/dts/framework/config/__init__.py
>> @@ -13,7 +13,7 @@
>>  from dataclasses import dataclass
>>  from enum import Enum, auto, unique
>>  from pathlib import PurePath
>> -from typing import Any, TypedDict
>> +from typing import Any, TypedDict, Union
>>
>>  import warlock  # type: ignore
>>  import yaml
>> @@ -55,6 +55,11 @@ class Compiler(StrEnum):
>>      msvc = auto()
>>
>>
>> +@unique
>> +class TrafficGeneratorType(StrEnum):
>> +    SCAPY = auto()
>> +
>> +
>>  # Slots enables some optimizations, by pre-allocating space for the defined
>>  # attributes in the underlying data structure.
>>  #
>> @@ -79,6 +84,29 @@ class PortConfig:
>>      def from_dict(node: str, d: dict) -> "PortConfig":
>>          return PortConfig(node=node, **d)
>>
>> +    def __str__(self) -> str:
>> +        return f"Port {self.pci} on node {self.node}"
>> +
>> +
>> +@dataclass(slots=True, frozen=True)
>> +class TrafficGeneratorConfig:
>> +    traffic_generator_type: TrafficGeneratorType
>> +
>> +    @staticmethod
>> +    def from_dict(d: dict):
>> +        # This looks useless now, but is designed to allow expansion to traffic
>> +        # generators that require more configuration later.
>> +        match TrafficGeneratorType(d["type"]):
>> +            case TrafficGeneratorType.SCAPY:
>> +                return ScapyTrafficGeneratorConfig(
>> +                    traffic_generator_type=TrafficGeneratorType.SCAPY
>> +                )
>> +
>> +
>> +@dataclass(slots=True, frozen=True)
>> +class ScapyTrafficGeneratorConfig(TrafficGeneratorConfig):
>> +    pass
>> +
>>
>>  @dataclass(slots=True, frozen=True)
>>  class NodeConfiguration:
>> @@ -90,17 +118,17 @@ class NodeConfiguration:
>>      os: OS
>>      lcores: str
>>      use_first_core: bool
>> -    memory_channels: int
>>      hugepages: HugepageConfiguration | None
>>      ports: list[PortConfig]
>>
>>      @staticmethod
>> -    def from_dict(d: dict) -> "NodeConfiguration":
>> +    def from_dict(d: dict) -> Union["SutNodeConfiguration", "TGNodeConfiguration"]:
>>          hugepage_config = d.get("hugepages")
>>          if hugepage_config:
>>              if "force_first_numa" not in hugepage_config:
>>                  hugepage_config["force_first_numa"] = False
>>              hugepage_config = HugepageConfiguration(**hugepage_config)
>> +
>>          common_config = {
>>              "name": d["name"],
>>              "hostname": d["hostname"],
>> @@ -110,12 +138,31 @@ def from_dict(d: dict) -> "NodeConfiguration":
>>              "os": OS(d["os"]),
>>              "lcores": d.get("lcores", "1"),
>>              "use_first_core": d.get("use_first_core", False),
>> -            "memory_channels": d.get("memory_channels", 1),
>>              "hugepages": hugepage_config,
>>              "ports": [PortConfig.from_dict(d["name"], port) for port in d["ports"]],
>>          }
>>
>> -        return NodeConfiguration(**common_config)
>> +        if "traffic_generator" in d:
>> +            return TGNodeConfiguration(
>> +                traffic_generator=TrafficGeneratorConfig.from_dict(
>> +                    d["traffic_generator"]
>> +                ),
>> +                **common_config,
>> +            )
>> +        else:
>> +            return SutNodeConfiguration(
>> +                memory_channels=d.get("memory_channels", 1), **common_config
>> +            )
>> +
>> +
>> +@dataclass(slots=True, frozen=True)
>> +class SutNodeConfiguration(NodeConfiguration):
>> +    memory_channels: int
>> +
>> +
>> +@dataclass(slots=True, frozen=True)
>> +class TGNodeConfiguration(NodeConfiguration):
>> +    traffic_generator: ScapyTrafficGeneratorConfig
>>
>>
>>  @dataclass(slots=True, frozen=True)
>> @@ -194,23 +241,40 @@ class ExecutionConfiguration:
>>      perf: bool
>>      func: bool
>>      test_suites: list[TestSuiteConfig]
>> -    system_under_test: NodeConfiguration
>> +    system_under_test_node: SutNodeConfiguration
>> +    traffic_generator_node: TGNodeConfiguration
>>      vdevs: list[str]
>>      skip_smoke_tests: bool
>>
>>      @staticmethod
>> -    def from_dict(d: dict, node_map: dict) -> "ExecutionConfiguration":
>> +    def from_dict(
>> +        d: dict, node_map: dict[str, Union[SutNodeConfiguration | TGNodeConfiguration]]
>> +    ) -> "ExecutionConfiguration":
>>          build_targets: list[BuildTargetConfiguration] = list(
>>              map(BuildTargetConfiguration.from_dict, d["build_targets"])
>>          )
>>          test_suites: list[TestSuiteConfig] = list(
>>              map(TestSuiteConfig.from_dict, d["test_suites"])
>>          )
>> -        sut_name = d["system_under_test"]["node_name"]
>> +        sut_name = d["system_under_test_node"]["node_name"]
>>          skip_smoke_tests = d.get("skip_smoke_tests", False)
>>          assert sut_name in node_map, f"Unknown SUT {sut_name} in execution {d}"
>> +        system_under_test_node = node_map[sut_name]
>> +        assert isinstance(
>> +            system_under_test_node, SutNodeConfiguration
>> +        ), f"Invalid SUT configuration {system_under_test_node}"
>> +
>> +        tg_name = d["traffic_generator_node"]
>> +        assert tg_name in node_map, f"Unknown TG {tg_name} in execution {d}"
>> +        traffic_generator_node = node_map[tg_name]
>> +        assert isinstance(
>> +            traffic_generator_node, TGNodeConfiguration
>> +        ), f"Invalid TG configuration {traffic_generator_node}"
>> +
>>
>>          vdevs = (
>> -            d["system_under_test"]["vdevs"] if "vdevs" in d["system_under_test"] else []
>> +            d["system_under_test_node"]["vdevs"]
>> +            if "vdevs" in d["system_under_test_node"]
>> +            else []
>>          )
>>          return ExecutionConfiguration(
>>              build_targets=build_targets,
>> @@ -218,7 +282,8 @@ def from_dict(d: dict, node_map: dict) -> "ExecutionConfiguration":
>>              func=d["func"],
>>              skip_smoke_tests=skip_smoke_tests,
>>              test_suites=test_suites,
>> -            system_under_test=node_map[sut_name],
>> +            system_under_test_node=system_under_test_node,
>> +            traffic_generator_node=traffic_generator_node,
>>              vdevs=vdevs,
>>          )
>>
>> @@ -229,7 +294,7 @@ class Configuration:
>>
>>      @staticmethod
>>      def from_dict(d: dict) -> "Configuration":
>> -        nodes: list[NodeConfiguration] = list(
>> +        nodes: list[Union[SutNodeConfiguration | TGNodeConfiguration]] = list(
>>              map(NodeConfiguration.from_dict, d["nodes"])
>>          )
>>          assert len(nodes) > 0, "There must be a node to test"
>> diff --git a/dts/framework/config/conf_yaml_schema.json b/dts/framework/config/conf_yaml_schema.json
>> index 61f52b4365..76df84840a 100644
>> --- a/dts/framework/config/conf_yaml_schema.json
>> +++ b/dts/framework/config/conf_yaml_schema.json
>> @@ -164,6 +164,11 @@
>>          "amount"
>>        ]
>>      },
>> +    "mac_address": {
>> +      "type": "string",
>> +      "description": "A MAC address",
>> +      "pattern": "^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$"
>> +    },
>>      "pci_address": {
>>        "type": "string",
>>        "pattern": "^[\\da-fA-F]{4}:[\\da-fA-F]{2}:[\\da-fA-F]{2}.\\d:?\\w*$"
>> @@ -286,6 +291,22 @@
>>                ]
>>              },
>>              "minimum": 1
>> +          },
>> +          "traffic_generator": {
>> +            "oneOf": [
>> +              {
>> +                "type": "object",
>> +                "description": "Scapy traffic generator. Used for functional testing.",
>> +                "properties": {
>> +                  "type": {
>> +                    "type": "string",
>> +                    "enum": [
>> +                      "SCAPY"
>> +                    ]
>> +                  }
>> +                }
>> +              }
>> +            ]
>>            }
>>          },
>>          "additionalProperties": false,
>> @@ -336,7 +357,7 @@
>>              "description": "Optional field that allows you to skip smoke testing",
>>              "type": "boolean"
>>            },
>> -          "system_under_test": {
>> +          "system_under_test_node": {
>>              "type":"object",
>>              "properties": {
>>                "node_name": {
>> @@ -353,6 +374,9 @@
>>              "required": [
>>                "node_name"
>>              ]
>> +          },
>> +          "traffic_generator_node": {
>> +            "$ref": "#/definitions/node_name"
>>            }
>>          },
>>          "additionalProperties": false,
>> @@ -361,7 +385,8 @@
>>            "perf",
>>            "func",
>>            "test_suites",
>> -          "system_under_test"
>> +          "system_under_test_node",
>> +          "traffic_generator_node"
>>          ]
>>        },
>>        "minimum": 1
>> diff --git a/dts/framework/dts.py b/dts/framework/dts.py
>> index 7b09d8fba8..372bc72787 100644
>> --- a/dts/framework/dts.py
>> +++ b/dts/framework/dts.py
>> @@ -38,17 +38,17 @@ def run_all() -> None:
>>          # for all Execution sections
>>          for execution in CONFIGURATION.executions:
>>              sut_node = None
>> -            if execution.system_under_test.name in nodes:
>> +            if execution.system_under_test_node.name in nodes:
>>                  # a Node with the same name already exists
>> -                sut_node = nodes[execution.system_under_test.name]
>> +                sut_node = nodes[execution.system_under_test_node.name]
>>              else:
>>                  # the SUT has not been initialized yet
>>                  try:
>> -                    sut_node = SutNode(execution.system_under_test)
>> +                    sut_node = SutNode(execution.system_under_test_node)
>>                      result.update_setup(Result.PASS)
>>                  except Exception as e:
>>                      dts_logger.exception(
>> -                        f"Connection to node {execution.system_under_test} failed."
>> +                        f"Connection to node {execution.system_under_test_node} failed."
>>                      )
>>                      result.update_setup(Result.FAIL, e)
>>                  else:
>> @@ -87,7 +87,9 @@ def _run_execution(
>>      Run the given execution. This involves running the execution setup as well as
>>      running all build targets in the given execution.
>>      """
>> -    dts_logger.info(f"Running execution with SUT '{execution.system_under_test.name}'.")
>> +    dts_logger.info(
>> +        f"Running execution with SUT '{execution.system_under_test_node.name}'."
>> +    )
>>      execution_result = result.add_execution(sut_node.config, sut_node.node_info)
>>
>>      try:
>> diff --git a/dts/framework/testbed_model/node.py b/dts/framework/testbed_model/node.py
>> index c5147e0ee6..d2d55d904e 100644
>> --- a/dts/framework/testbed_model/node.py
>> +++ b/dts/framework/testbed_model/node.py
>> @@ -48,6 +48,8 @@ def __init__(self, node_config: NodeConfiguration):
>>          self._logger = getLogger(self.name)
>>          self.main_session = create_session(self.config, self.name, self._logger)
>>
>> +        self._logger.info(f"Connected to node: {self.name}")
>> +
>>          self._get_remote_cpus()
>>          # filter the node lcores according to user config
>>          self.lcores = LogicalCoreListFilter(
>> @@ -56,8 +58,6 @@ def __init__(self, node_config: NodeConfiguration):
>>
>>          self._other_sessions = []
>>
>> -        self._logger.info(f"Created node: {self.name}")
>> -
>>      def set_up_execution(self, execution_config: ExecutionConfiguration) -> None:
>>          """
>>          Perform the execution setup that will be done for each execution
>> diff --git a/dts/framework/testbed_model/sut_node.py b/dts/framework/testbed_model/sut_node.py
>> index 53953718a1..bcad364435 100644
>> --- a/dts/framework/testbed_model/sut_node.py
>> +++ b/dts/framework/testbed_model/sut_node.py
>> @@ -13,8 +13,8 @@
>>      BuildTargetConfiguration,
>>      BuildTargetInfo,
>>      InteractiveApp,
>> -    NodeConfiguration,
>>      NodeInfo,
>> +    SutNodeConfiguration,
>>  )
>>  from framework.remote_session import (
>>      CommandResult,
>> @@ -83,6 +83,7 @@ class SutNode(Node):
>>      Another key capability is building DPDK according to given build target.
>>      """
>>
>> +    config: SutNodeConfiguration
>>      _dpdk_prefix_list: list[str]
>>      _dpdk_timestamp: str
>>      _build_target_config: BuildTargetConfiguration | None
>> @@ -95,7 +96,7 @@ class SutNode(Node):
>>      _node_info: NodeInfo | None
>>      _compiler_version: str | None
>>
>> -    def __init__(self, node_config: NodeConfiguration):
>> +    def __init__(self, node_config: SutNodeConfiguration):
>>          super(SutNode, self).__init__(node_config)
>>          self._dpdk_prefix_list = []
>>          self._build_target_config = None
>> @@ -110,6 +111,7 @@ def __init__(self, node_config: NodeConfiguration):
>>          self._dpdk_version = None
>>          self._node_info = None
>>          self._compiler_version = None
>> +        self._logger.info(f"Created node: {self.name}")
>>
>>      @property
>>      def _remote_dpdk_dir(self) -> PurePath:
>> --
>> 2.34.1
>>
  
Jeremy Spewock July 19, 2023, 1:18 p.m. UTC | #3
On Wed, Jul 19, 2023, 08:57 Juraj Linkeš <juraj.linkes@pantheon.tech> wrote:

> On Tue, Jul 18, 2023 at 5:55 PM Jeremy Spewock <jspewock@iol.unh.edu>
> wrote:
> >
> > Hey Juraj,
> >
> > These changes look good to me, I just had one question. Is the plan to
> make specifying a TG always required or optional for cases where it isn't
> required? It seems like it is written now as something that is required for
> every execution. I don't think this is necessarily a bad thing, I just
> wonder if it would be beneficial at all to make it optional to allow for
> executions that don't utilize a TG to just not specify it.
> >
>
> If there's a legitimate use case (or we can imagine one) for this in
> CI (or anywhere else), then we'd want to make a TG node optional.
> Let's leave the implementation as is and make the TG node optional
> once we discuss it further in the CI call. We talked about a mechanism
> to skip test cases based on the testbed capabilities and I think this
> would fit into that (as TG could be viewed as a testbed capability).
>

I like that idea of thinking of it as a testbed capability and skipping
based on that. I think that would work nicely to address this if there was
a use case for it. Thanks for the input!


> > On Mon, Jul 17, 2023 at 7:07 AM Juraj Linkeš <juraj.linkes@pantheon.tech>
> wrote:
> >>
> >> Node configuration - where to connect, what ports to use and what TG to
> >> use.
> >>
> >> Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
> >> ---
> >>  dts/conf.yaml                              | 26 ++++++-
> >>  dts/framework/config/__init__.py           | 87 +++++++++++++++++++---
> >>  dts/framework/config/conf_yaml_schema.json | 29 +++++++-
> >>  dts/framework/dts.py                       | 12 +--
> >>  dts/framework/testbed_model/node.py        |  4 +-
> >>  dts/framework/testbed_model/sut_node.py    |  6 +-
> >>  6 files changed, 141 insertions(+), 23 deletions(-)
> >>
> >> diff --git a/dts/conf.yaml b/dts/conf.yaml
> >> index 3a5d87cb49..7f089022ba 100644
> >> --- a/dts/conf.yaml
> >> +++ b/dts/conf.yaml
> >> @@ -13,10 +13,11 @@ executions:
> >>      skip_smoke_tests: false # optional flag that allow you to skip
> smoke tests
> >>      test_suites:
> >>        - hello_world
> >> -    system_under_test:
> >> +    system_under_test_node:
> >>        node_name: "SUT 1"
> >>        vdevs: # optional; if removed, vdevs won't be used in the
> execution
> >>          - "crypto_openssl"
> >> +    traffic_generator_node: "TG 1"
> >>  nodes:
> >>    - name: "SUT 1"
> >>      hostname: sut1.change.me.localhost
> >> @@ -40,3 +41,26 @@ nodes:
> >>          os_driver: i40e
> >>          peer_node: "TG 1"
> >>          peer_pci: "0000:00:08.1"
> >> +  - name: "TG 1"
> >> +    hostname: tg1.change.me.localhost
> >> +    user: dtsuser
> >> +    arch: x86_64
> >> +    os: linux
> >> +    lcores: ""
> >> +    ports:
> >> +      - pci: "0000:00:08.0"
> >> +        os_driver_for_dpdk: rdma
> >> +        os_driver: rdma
> >> +        peer_node: "SUT 1"
> >> +        peer_pci: "0000:00:08.0"
> >> +      - pci: "0000:00:08.1"
> >> +        os_driver_for_dpdk: rdma
> >> +        os_driver: rdma
> >> +        peer_node: "SUT 1"
> >> +        peer_pci: "0000:00:08.1"
> >> +    use_first_core: false
> >> +    hugepages:  # optional; if removed, will use system hugepage
> configuration
> >> +        amount: 256
> >> +        force_first_numa: false
> >> +    traffic_generator:
> >> +        type: SCAPY
> >> diff --git a/dts/framework/config/__init__.py
> b/dts/framework/config/__init__.py
> >> index fad56cc520..72aa021b97 100644
> >> --- a/dts/framework/config/__init__.py
> >> +++ b/dts/framework/config/__init__.py
> >> @@ -13,7 +13,7 @@
> >>  from dataclasses import dataclass
> >>  from enum import Enum, auto, unique
> >>  from pathlib import PurePath
> >> -from typing import Any, TypedDict
> >> +from typing import Any, TypedDict, Union
> >>
> >>  import warlock  # type: ignore
> >>  import yaml
> >> @@ -55,6 +55,11 @@ class Compiler(StrEnum):
> >>      msvc = auto()
> >>
> >>
> >> +@unique
> >> +class TrafficGeneratorType(StrEnum):
> >> +    SCAPY = auto()
> >> +
> >> +
> >>  # Slots enables some optimizations, by pre-allocating space for the
> defined
> >>  # attributes in the underlying data structure.
> >>  #
> >> @@ -79,6 +84,29 @@ class PortConfig:
> >>      def from_dict(node: str, d: dict) -> "PortConfig":
> >>          return PortConfig(node=node, **d)
> >>
> >> +    def __str__(self) -> str:
> >> +        return f"Port {self.pci} on node {self.node}"
> >> +
> >> +
> >> +@dataclass(slots=True, frozen=True)
> >> +class TrafficGeneratorConfig:
> >> +    traffic_generator_type: TrafficGeneratorType
> >> +
> >> +    @staticmethod
> >> +    def from_dict(d: dict):
> >> +        # This looks useless now, but is designed to allow expansion
> to traffic
> >> +        # generators that require more configuration later.
> >> +        match TrafficGeneratorType(d["type"]):
> >> +            case TrafficGeneratorType.SCAPY:
> >> +                return ScapyTrafficGeneratorConfig(
> >> +                    traffic_generator_type=TrafficGeneratorType.SCAPY
> >> +                )
> >> +
> >> +
> >> +@dataclass(slots=True, frozen=True)
> >> +class ScapyTrafficGeneratorConfig(TrafficGeneratorConfig):
> >> +    pass
> >> +
> >>
> >>  @dataclass(slots=True, frozen=True)
> >>  class NodeConfiguration:
> >> @@ -90,17 +118,17 @@ class NodeConfiguration:
> >>      os: OS
> >>      lcores: str
> >>      use_first_core: bool
> >> -    memory_channels: int
> >>      hugepages: HugepageConfiguration | None
> >>      ports: list[PortConfig]
> >>
> >>      @staticmethod
> >> -    def from_dict(d: dict) -> "NodeConfiguration":
> >> +    def from_dict(d: dict) -> Union["SutNodeConfiguration",
> "TGNodeConfiguration"]:
> >>          hugepage_config = d.get("hugepages")
> >>          if hugepage_config:
> >>              if "force_first_numa" not in hugepage_config:
> >>                  hugepage_config["force_first_numa"] = False
> >>              hugepage_config = HugepageConfiguration(**hugepage_config)
> >> +
> >>          common_config = {
> >>              "name": d["name"],
> >>              "hostname": d["hostname"],
> >> @@ -110,12 +138,31 @@ def from_dict(d: dict) -> "NodeConfiguration":
> >>              "os": OS(d["os"]),
> >>              "lcores": d.get("lcores", "1"),
> >>              "use_first_core": d.get("use_first_core", False),
> >> -            "memory_channels": d.get("memory_channels", 1),
> >>              "hugepages": hugepage_config,
> >>              "ports": [PortConfig.from_dict(d["name"], port) for port
> in d["ports"]],
> >>          }
> >>
> >> -        return NodeConfiguration(**common_config)
> >> +        if "traffic_generator" in d:
> >> +            return TGNodeConfiguration(
> >> +                traffic_generator=TrafficGeneratorConfig.from_dict(
> >> +                    d["traffic_generator"]
> >> +                ),
> >> +                **common_config,
> >> +            )
> >> +        else:
> >> +            return SutNodeConfiguration(
> >> +                memory_channels=d.get("memory_channels", 1),
> **common_config
> >> +            )
> >> +
> >> +
> >> +@dataclass(slots=True, frozen=True)
> >> +class SutNodeConfiguration(NodeConfiguration):
> >> +    memory_channels: int
> >> +
> >> +
> >> +@dataclass(slots=True, frozen=True)
> >> +class TGNodeConfiguration(NodeConfiguration):
> >> +    traffic_generator: ScapyTrafficGeneratorConfig
> >>
> >>
> >>  @dataclass(slots=True, frozen=True)
> >> @@ -194,23 +241,40 @@ class ExecutionConfiguration:
> >>      perf: bool
> >>      func: bool
> >>      test_suites: list[TestSuiteConfig]
> >> -    system_under_test: NodeConfiguration
> >> +    system_under_test_node: SutNodeConfiguration
> >> +    traffic_generator_node: TGNodeConfiguration
> >>      vdevs: list[str]
> >>      skip_smoke_tests: bool
> >>
> >>      @staticmethod
> >> -    def from_dict(d: dict, node_map: dict) -> "ExecutionConfiguration":
> >> +    def from_dict(
> >> +        d: dict, node_map: dict[str, Union[SutNodeConfiguration |
> TGNodeConfiguration]]
> >> +    ) -> "ExecutionConfiguration":
> >>          build_targets: list[BuildTargetConfiguration] = list(
> >>              map(BuildTargetConfiguration.from_dict, d["build_targets"])
> >>          )
> >>          test_suites: list[TestSuiteConfig] = list(
> >>              map(TestSuiteConfig.from_dict, d["test_suites"])
> >>          )
> >> -        sut_name = d["system_under_test"]["node_name"]
> >> +        sut_name = d["system_under_test_node"]["node_name"]
> >>          skip_smoke_tests = d.get("skip_smoke_tests", False)
> >>          assert sut_name in node_map, f"Unknown SUT {sut_name} in
> execution {d}"
> >> +        system_under_test_node = node_map[sut_name]
> >> +        assert isinstance(
> >> +            system_under_test_node, SutNodeConfiguration
> >> +        ), f"Invalid SUT configuration {system_under_test_node}"
> >> +
> >> +        tg_name = d["traffic_generator_node"]
> >> +        assert tg_name in node_map, f"Unknown TG {tg_name} in
> execution {d}"
> >> +        traffic_generator_node = node_map[tg_name]
> >> +        assert isinstance(
> >> +            traffic_generator_node, TGNodeConfiguration
> >> +        ), f"Invalid TG configuration {traffic_generator_node}"
> >> +
> >>
> >>          vdevs = (
> >> -            d["system_under_test"]["vdevs"] if "vdevs" in
> d["system_under_test"] else []
> >> +            d["system_under_test_node"]["vdevs"]
> >> +            if "vdevs" in d["system_under_test_node"]
> >> +            else []
> >>          )
> >>          return ExecutionConfiguration(
> >>              build_targets=build_targets,
> >> @@ -218,7 +282,8 @@ def from_dict(d: dict, node_map: dict) ->
> "ExecutionConfiguration":
> >>              func=d["func"],
> >>              skip_smoke_tests=skip_smoke_tests,
> >>              test_suites=test_suites,
> >> -            system_under_test=node_map[sut_name],
> >> +            system_under_test_node=system_under_test_node,
> >> +            traffic_generator_node=traffic_generator_node,
> >>              vdevs=vdevs,
> >>          )
> >>
> >> @@ -229,7 +294,7 @@ class Configuration:
> >>
> >>      @staticmethod
> >>      def from_dict(d: dict) -> "Configuration":
> >> -        nodes: list[NodeConfiguration] = list(
> >> +        nodes: list[Union[SutNodeConfiguration | TGNodeConfiguration]]
> = list(
> >>              map(NodeConfiguration.from_dict, d["nodes"])
> >>          )
> >>          assert len(nodes) > 0, "There must be a node to test"
> >> diff --git a/dts/framework/config/conf_yaml_schema.json
> b/dts/framework/config/conf_yaml_schema.json
> >> index 61f52b4365..76df84840a 100644
> >> --- a/dts/framework/config/conf_yaml_schema.json
> >> +++ b/dts/framework/config/conf_yaml_schema.json
> >> @@ -164,6 +164,11 @@
> >>          "amount"
> >>        ]
> >>      },
> >> +    "mac_address": {
> >> +      "type": "string",
> >> +      "description": "A MAC address",
> >> +      "pattern": "^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$"
> >> +    },
> >>      "pci_address": {
> >>        "type": "string",
> >>        "pattern":
> "^[\\da-fA-F]{4}:[\\da-fA-F]{2}:[\\da-fA-F]{2}.\\d:?\\w*$"
> >> @@ -286,6 +291,22 @@
> >>                ]
> >>              },
> >>              "minimum": 1
> >> +          },
> >> +          "traffic_generator": {
> >> +            "oneOf": [
> >> +              {
> >> +                "type": "object",
> >> +                "description": "Scapy traffic generator. Used for
> functional testing.",
> >> +                "properties": {
> >> +                  "type": {
> >> +                    "type": "string",
> >> +                    "enum": [
> >> +                      "SCAPY"
> >> +                    ]
> >> +                  }
> >> +                }
> >> +              }
> >> +            ]
> >>            }
> >>          },
> >>          "additionalProperties": false,
> >> @@ -336,7 +357,7 @@
> >>              "description": "Optional field that allows you to skip
> smoke testing",
> >>              "type": "boolean"
> >>            },
> >> -          "system_under_test": {
> >> +          "system_under_test_node": {
> >>              "type":"object",
> >>              "properties": {
> >>                "node_name": {
> >> @@ -353,6 +374,9 @@
> >>              "required": [
> >>                "node_name"
> >>              ]
> >> +          },
> >> +          "traffic_generator_node": {
> >> +            "$ref": "#/definitions/node_name"
> >>            }
> >>          },
> >>          "additionalProperties": false,
> >> @@ -361,7 +385,8 @@
> >>            "perf",
> >>            "func",
> >>            "test_suites",
> >> -          "system_under_test"
> >> +          "system_under_test_node",
> >> +          "traffic_generator_node"
> >>          ]
> >>        },
> >>        "minimum": 1
> >> diff --git a/dts/framework/dts.py b/dts/framework/dts.py
> >> index 7b09d8fba8..372bc72787 100644
> >> --- a/dts/framework/dts.py
> >> +++ b/dts/framework/dts.py
> >> @@ -38,17 +38,17 @@ def run_all() -> None:
> >>          # for all Execution sections
> >>          for execution in CONFIGURATION.executions:
> >>              sut_node = None
> >> -            if execution.system_under_test.name in nodes:
> >> +            if execution.system_under_test_node.name in nodes:
> >>                  # a Node with the same name already exists
> >> -                sut_node = nodes[execution.system_under_test.name]
> >> +                sut_node = nodes[execution.system_under_test_node.name
> ]
> >>              else:
> >>                  # the SUT has not been initialized yet
> >>                  try:
> >> -                    sut_node = SutNode(execution.system_under_test)
> >> +                    sut_node =
> SutNode(execution.system_under_test_node)
> >>                      result.update_setup(Result.PASS)
> >>                  except Exception as e:
> >>                      dts_logger.exception(
> >> -                        f"Connection to node
> {execution.system_under_test} failed."
> >> +                        f"Connection to node
> {execution.system_under_test_node} failed."
> >>                      )
> >>                      result.update_setup(Result.FAIL, e)
> >>                  else:
> >> @@ -87,7 +87,9 @@ def _run_execution(
> >>      Run the given execution. This involves running the execution setup
> as well as
> >>      running all build targets in the given execution.
> >>      """
> >> -    dts_logger.info(f"Running execution with SUT '{
> execution.system_under_test.name}'.")
> >> +    dts_logger.info(
> >> +        f"Running execution with SUT '{
> execution.system_under_test_node.name}'."
> >> +    )
> >>      execution_result = result.add_execution(sut_node.config,
> sut_node.node_info)
> >>
> >>      try:
> >> diff --git a/dts/framework/testbed_model/node.py
> b/dts/framework/testbed_model/node.py
> >> index c5147e0ee6..d2d55d904e 100644
> >> --- a/dts/framework/testbed_model/node.py
> >> +++ b/dts/framework/testbed_model/node.py
> >> @@ -48,6 +48,8 @@ def __init__(self, node_config: NodeConfiguration):
> >>          self._logger = getLogger(self.name)
> >>          self.main_session = create_session(self.config, self.name,
> self._logger)
> >>
> >> +        self._logger.info(f"Connected to node: {self.name}")
> >> +
> >>          self._get_remote_cpus()
> >>          # filter the node lcores according to user config
> >>          self.lcores = LogicalCoreListFilter(
> >> @@ -56,8 +58,6 @@ def __init__(self, node_config: NodeConfiguration):
> >>
> >>          self._other_sessions = []
> >>
> >> -        self._logger.info(f"Created node: {self.name}")
> >> -
> >>      def set_up_execution(self, execution_config:
> ExecutionConfiguration) -> None:
> >>          """
> >>          Perform the execution setup that will be done for each
> execution
> >> diff --git a/dts/framework/testbed_model/sut_node.py
> b/dts/framework/testbed_model/sut_node.py
> >> index 53953718a1..bcad364435 100644
> >> --- a/dts/framework/testbed_model/sut_node.py
> >> +++ b/dts/framework/testbed_model/sut_node.py
> >> @@ -13,8 +13,8 @@
> >>      BuildTargetConfiguration,
> >>      BuildTargetInfo,
> >>      InteractiveApp,
> >> -    NodeConfiguration,
> >>      NodeInfo,
> >> +    SutNodeConfiguration,
> >>  )
> >>  from framework.remote_session import (
> >>      CommandResult,
> >> @@ -83,6 +83,7 @@ class SutNode(Node):
> >>      Another key capability is building DPDK according to given build
> target.
> >>      """
> >>
> >> +    config: SutNodeConfiguration
> >>      _dpdk_prefix_list: list[str]
> >>      _dpdk_timestamp: str
> >>      _build_target_config: BuildTargetConfiguration | None
> >> @@ -95,7 +96,7 @@ class SutNode(Node):
> >>      _node_info: NodeInfo | None
> >>      _compiler_version: str | None
> >>
> >> -    def __init__(self, node_config: NodeConfiguration):
> >> +    def __init__(self, node_config: SutNodeConfiguration):
> >>          super(SutNode, self).__init__(node_config)
> >>          self._dpdk_prefix_list = []
> >>          self._build_target_config = None
> >> @@ -110,6 +111,7 @@ def __init__(self, node_config: NodeConfiguration):
> >>          self._dpdk_version = None
> >>          self._node_info = None
> >>          self._compiler_version = None
> >> +        self._logger.info(f"Created node: {self.name}")
> >>
> >>      @property
> >>      def _remote_dpdk_dir(self) -> PurePath:
> >> --
> >> 2.34.1
> >>
>
  

Patch

diff --git a/dts/conf.yaml b/dts/conf.yaml
index 3a5d87cb49..7f089022ba 100644
--- a/dts/conf.yaml
+++ b/dts/conf.yaml
@@ -13,10 +13,11 @@  executions:
     skip_smoke_tests: false # optional flag that allow you to skip smoke tests
     test_suites:
       - hello_world
-    system_under_test:
+    system_under_test_node:
       node_name: "SUT 1"
       vdevs: # optional; if removed, vdevs won't be used in the execution
         - "crypto_openssl"
+    traffic_generator_node: "TG 1"
 nodes:
   - name: "SUT 1"
     hostname: sut1.change.me.localhost
@@ -40,3 +41,26 @@  nodes:
         os_driver: i40e
         peer_node: "TG 1"
         peer_pci: "0000:00:08.1"
+  - name: "TG 1"
+    hostname: tg1.change.me.localhost
+    user: dtsuser
+    arch: x86_64
+    os: linux
+    lcores: ""
+    ports:
+      - pci: "0000:00:08.0"
+        os_driver_for_dpdk: rdma
+        os_driver: rdma
+        peer_node: "SUT 1"
+        peer_pci: "0000:00:08.0"
+      - pci: "0000:00:08.1"
+        os_driver_for_dpdk: rdma
+        os_driver: rdma
+        peer_node: "SUT 1"
+        peer_pci: "0000:00:08.1"
+    use_first_core: false
+    hugepages:  # optional; if removed, will use system hugepage configuration
+        amount: 256
+        force_first_numa: false
+    traffic_generator:
+        type: SCAPY
diff --git a/dts/framework/config/__init__.py b/dts/framework/config/__init__.py
index fad56cc520..72aa021b97 100644
--- a/dts/framework/config/__init__.py
+++ b/dts/framework/config/__init__.py
@@ -13,7 +13,7 @@ 
 from dataclasses import dataclass
 from enum import Enum, auto, unique
 from pathlib import PurePath
-from typing import Any, TypedDict
+from typing import Any, TypedDict, Union
 
 import warlock  # type: ignore
 import yaml
@@ -55,6 +55,11 @@  class Compiler(StrEnum):
     msvc = auto()
 
 
+@unique
+class TrafficGeneratorType(StrEnum):
+    SCAPY = auto()
+
+
 # Slots enables some optimizations, by pre-allocating space for the defined
 # attributes in the underlying data structure.
 #
@@ -79,6 +84,29 @@  class PortConfig:
     def from_dict(node: str, d: dict) -> "PortConfig":
         return PortConfig(node=node, **d)
 
+    def __str__(self) -> str:
+        return f"Port {self.pci} on node {self.node}"
+
+
+@dataclass(slots=True, frozen=True)
+class TrafficGeneratorConfig:
+    traffic_generator_type: TrafficGeneratorType
+
+    @staticmethod
+    def from_dict(d: dict):
+        # This looks useless now, but is designed to allow expansion to traffic
+        # generators that require more configuration later.
+        match TrafficGeneratorType(d["type"]):
+            case TrafficGeneratorType.SCAPY:
+                return ScapyTrafficGeneratorConfig(
+                    traffic_generator_type=TrafficGeneratorType.SCAPY
+                )
+
+
+@dataclass(slots=True, frozen=True)
+class ScapyTrafficGeneratorConfig(TrafficGeneratorConfig):
+    pass
+
 
 @dataclass(slots=True, frozen=True)
 class NodeConfiguration:
@@ -90,17 +118,17 @@  class NodeConfiguration:
     os: OS
     lcores: str
     use_first_core: bool
-    memory_channels: int
     hugepages: HugepageConfiguration | None
     ports: list[PortConfig]
 
     @staticmethod
-    def from_dict(d: dict) -> "NodeConfiguration":
+    def from_dict(d: dict) -> Union["SutNodeConfiguration", "TGNodeConfiguration"]:
         hugepage_config = d.get("hugepages")
         if hugepage_config:
             if "force_first_numa" not in hugepage_config:
                 hugepage_config["force_first_numa"] = False
             hugepage_config = HugepageConfiguration(**hugepage_config)
+
         common_config = {
             "name": d["name"],
             "hostname": d["hostname"],
@@ -110,12 +138,31 @@  def from_dict(d: dict) -> "NodeConfiguration":
             "os": OS(d["os"]),
             "lcores": d.get("lcores", "1"),
             "use_first_core": d.get("use_first_core", False),
-            "memory_channels": d.get("memory_channels", 1),
             "hugepages": hugepage_config,
             "ports": [PortConfig.from_dict(d["name"], port) for port in d["ports"]],
         }
 
-        return NodeConfiguration(**common_config)
+        if "traffic_generator" in d:
+            return TGNodeConfiguration(
+                traffic_generator=TrafficGeneratorConfig.from_dict(
+                    d["traffic_generator"]
+                ),
+                **common_config,
+            )
+        else:
+            return SutNodeConfiguration(
+                memory_channels=d.get("memory_channels", 1), **common_config
+            )
+
+
+@dataclass(slots=True, frozen=True)
+class SutNodeConfiguration(NodeConfiguration):
+    memory_channels: int
+
+
+@dataclass(slots=True, frozen=True)
+class TGNodeConfiguration(NodeConfiguration):
+    traffic_generator: ScapyTrafficGeneratorConfig
 
 
 @dataclass(slots=True, frozen=True)
@@ -194,23 +241,40 @@  class ExecutionConfiguration:
     perf: bool
     func: bool
     test_suites: list[TestSuiteConfig]
-    system_under_test: NodeConfiguration
+    system_under_test_node: SutNodeConfiguration
+    traffic_generator_node: TGNodeConfiguration
     vdevs: list[str]
     skip_smoke_tests: bool
 
     @staticmethod
-    def from_dict(d: dict, node_map: dict) -> "ExecutionConfiguration":
+    def from_dict(
+        d: dict, node_map: dict[str, Union[SutNodeConfiguration | TGNodeConfiguration]]
+    ) -> "ExecutionConfiguration":
         build_targets: list[BuildTargetConfiguration] = list(
             map(BuildTargetConfiguration.from_dict, d["build_targets"])
         )
         test_suites: list[TestSuiteConfig] = list(
             map(TestSuiteConfig.from_dict, d["test_suites"])
         )
-        sut_name = d["system_under_test"]["node_name"]
+        sut_name = d["system_under_test_node"]["node_name"]
         skip_smoke_tests = d.get("skip_smoke_tests", False)
         assert sut_name in node_map, f"Unknown SUT {sut_name} in execution {d}"
+        system_under_test_node = node_map[sut_name]
+        assert isinstance(
+            system_under_test_node, SutNodeConfiguration
+        ), f"Invalid SUT configuration {system_under_test_node}"
+
+        tg_name = d["traffic_generator_node"]
+        assert tg_name in node_map, f"Unknown TG {tg_name} in execution {d}"
+        traffic_generator_node = node_map[tg_name]
+        assert isinstance(
+            traffic_generator_node, TGNodeConfiguration
+        ), f"Invalid TG configuration {traffic_generator_node}"
+
         vdevs = (
-            d["system_under_test"]["vdevs"] if "vdevs" in d["system_under_test"] else []
+            d["system_under_test_node"]["vdevs"]
+            if "vdevs" in d["system_under_test_node"]
+            else []
         )
         return ExecutionConfiguration(
             build_targets=build_targets,
@@ -218,7 +282,8 @@  def from_dict(d: dict, node_map: dict) -> "ExecutionConfiguration":
             func=d["func"],
             skip_smoke_tests=skip_smoke_tests,
             test_suites=test_suites,
-            system_under_test=node_map[sut_name],
+            system_under_test_node=system_under_test_node,
+            traffic_generator_node=traffic_generator_node,
             vdevs=vdevs,
         )
 
@@ -229,7 +294,7 @@  class Configuration:
 
     @staticmethod
     def from_dict(d: dict) -> "Configuration":
-        nodes: list[NodeConfiguration] = list(
+        nodes: list[Union[SutNodeConfiguration | TGNodeConfiguration]] = list(
             map(NodeConfiguration.from_dict, d["nodes"])
         )
         assert len(nodes) > 0, "There must be a node to test"
diff --git a/dts/framework/config/conf_yaml_schema.json b/dts/framework/config/conf_yaml_schema.json
index 61f52b4365..76df84840a 100644
--- a/dts/framework/config/conf_yaml_schema.json
+++ b/dts/framework/config/conf_yaml_schema.json
@@ -164,6 +164,11 @@ 
         "amount"
       ]
     },
+    "mac_address": {
+      "type": "string",
+      "description": "A MAC address",
+      "pattern": "^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$"
+    },
     "pci_address": {
       "type": "string",
       "pattern": "^[\\da-fA-F]{4}:[\\da-fA-F]{2}:[\\da-fA-F]{2}.\\d:?\\w*$"
@@ -286,6 +291,22 @@ 
               ]
             },
             "minimum": 1
+          },
+          "traffic_generator": {
+            "oneOf": [
+              {
+                "type": "object",
+                "description": "Scapy traffic generator. Used for functional testing.",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "enum": [
+                      "SCAPY"
+                    ]
+                  }
+                }
+              }
+            ]
           }
         },
         "additionalProperties": false,
@@ -336,7 +357,7 @@ 
             "description": "Optional field that allows you to skip smoke testing",
             "type": "boolean"
           },
-          "system_under_test": {
+          "system_under_test_node": {
             "type":"object",
             "properties": {
               "node_name": {
@@ -353,6 +374,9 @@ 
             "required": [
               "node_name"
             ]
+          },
+          "traffic_generator_node": {
+            "$ref": "#/definitions/node_name"
           }
         },
         "additionalProperties": false,
@@ -361,7 +385,8 @@ 
           "perf",
           "func",
           "test_suites",
-          "system_under_test"
+          "system_under_test_node",
+          "traffic_generator_node"
         ]
       },
       "minimum": 1
diff --git a/dts/framework/dts.py b/dts/framework/dts.py
index 7b09d8fba8..372bc72787 100644
--- a/dts/framework/dts.py
+++ b/dts/framework/dts.py
@@ -38,17 +38,17 @@  def run_all() -> None:
         # for all Execution sections
         for execution in CONFIGURATION.executions:
             sut_node = None
-            if execution.system_under_test.name in nodes:
+            if execution.system_under_test_node.name in nodes:
                 # a Node with the same name already exists
-                sut_node = nodes[execution.system_under_test.name]
+                sut_node = nodes[execution.system_under_test_node.name]
             else:
                 # the SUT has not been initialized yet
                 try:
-                    sut_node = SutNode(execution.system_under_test)
+                    sut_node = SutNode(execution.system_under_test_node)
                     result.update_setup(Result.PASS)
                 except Exception as e:
                     dts_logger.exception(
-                        f"Connection to node {execution.system_under_test} failed."
+                        f"Connection to node {execution.system_under_test_node} failed."
                     )
                     result.update_setup(Result.FAIL, e)
                 else:
@@ -87,7 +87,9 @@  def _run_execution(
     Run the given execution. This involves running the execution setup as well as
     running all build targets in the given execution.
     """
-    dts_logger.info(f"Running execution with SUT '{execution.system_under_test.name}'.")
+    dts_logger.info(
+        f"Running execution with SUT '{execution.system_under_test_node.name}'."
+    )
     execution_result = result.add_execution(sut_node.config, sut_node.node_info)
 
     try:
diff --git a/dts/framework/testbed_model/node.py b/dts/framework/testbed_model/node.py
index c5147e0ee6..d2d55d904e 100644
--- a/dts/framework/testbed_model/node.py
+++ b/dts/framework/testbed_model/node.py
@@ -48,6 +48,8 @@  def __init__(self, node_config: NodeConfiguration):
         self._logger = getLogger(self.name)
         self.main_session = create_session(self.config, self.name, self._logger)
 
+        self._logger.info(f"Connected to node: {self.name}")
+
         self._get_remote_cpus()
         # filter the node lcores according to user config
         self.lcores = LogicalCoreListFilter(
@@ -56,8 +58,6 @@  def __init__(self, node_config: NodeConfiguration):
 
         self._other_sessions = []
 
-        self._logger.info(f"Created node: {self.name}")
-
     def set_up_execution(self, execution_config: ExecutionConfiguration) -> None:
         """
         Perform the execution setup that will be done for each execution
diff --git a/dts/framework/testbed_model/sut_node.py b/dts/framework/testbed_model/sut_node.py
index 53953718a1..bcad364435 100644
--- a/dts/framework/testbed_model/sut_node.py
+++ b/dts/framework/testbed_model/sut_node.py
@@ -13,8 +13,8 @@ 
     BuildTargetConfiguration,
     BuildTargetInfo,
     InteractiveApp,
-    NodeConfiguration,
     NodeInfo,
+    SutNodeConfiguration,
 )
 from framework.remote_session import (
     CommandResult,
@@ -83,6 +83,7 @@  class SutNode(Node):
     Another key capability is building DPDK according to given build target.
     """
 
+    config: SutNodeConfiguration
     _dpdk_prefix_list: list[str]
     _dpdk_timestamp: str
     _build_target_config: BuildTargetConfiguration | None
@@ -95,7 +96,7 @@  class SutNode(Node):
     _node_info: NodeInfo | None
     _compiler_version: str | None
 
-    def __init__(self, node_config: NodeConfiguration):
+    def __init__(self, node_config: SutNodeConfiguration):
         super(SutNode, self).__init__(node_config)
         self._dpdk_prefix_list = []
         self._build_target_config = None
@@ -110,6 +111,7 @@  def __init__(self, node_config: NodeConfiguration):
         self._dpdk_version = None
         self._node_info = None
         self._compiler_version = None
+        self._logger.info(f"Created node: {self.name}")
 
     @property
     def _remote_dpdk_dir(self) -> PurePath: