[RFC,v2] dts: skip test cases based on capabilities

Message ID 20240411084829.64984-1-juraj.linkes@pantheon.tech (mailing list archive)
State New
Delegated to: Thomas Monjalon
Headers
Series [RFC,v2] dts: skip test cases based on capabilities |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/loongarch-compilation success Compilation OK
ci/loongarch-unit-testing success Unit Testing PASS
ci/github-robot: build success github build: passed
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-mellanox-Performance success Performance Testing PASS
ci/iol-abi-testing success Testing PASS
ci/iol-compile-amd64-testing success Testing PASS
ci/iol-unit-amd64-testing success Testing PASS
ci/iol-sample-apps-testing success Testing PASS
ci/iol-unit-arm64-testing success Testing PASS
ci/iol-intel-Functional success Functional Testing PASS
ci/iol-broadcom-Functional success Functional Testing PASS
ci/iol-broadcom-Performance success Performance Testing PASS
ci/iol-compile-arm64-testing success Testing PASS
ci/Intel-compilation success Compilation OK
ci/intel-Testing success Testing PASS
ci/intel-Functional success Functional PASS

Commit Message

Juraj Linkeš April 11, 2024, 8:48 a.m. UTC
  The devices under test may not support the capabilities required by
various test cases. Add support for:
1. Marking test suites and test cases with required capabilities,
2. Getting which required capabilities are supported by the device under
   test,
3. And then skipping test suites and test cases if their required
   capabilities are not supported by the device.

Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
---
 dts/framework/remote_session/__init__.py      |  2 +-
 dts/framework/remote_session/testpmd_shell.py | 44 ++++++++-
 dts/framework/runner.py                       | 46 ++++++++--
 dts/framework/test_result.py                  | 90 +++++++++++++++----
 dts/framework/test_suite.py                   | 25 ++++++
 dts/framework/testbed_model/sut_node.py       | 25 +++++-
 dts/tests/TestSuite_hello_world.py            |  4 +-
 7 files changed, 204 insertions(+), 32 deletions(-)
  

Comments

Luca Vizzarro May 21, 2024, 3:47 p.m. UTC | #1
On 11/04/2024 09:48, Juraj Linkeš wrote:
> +    def get_capas_rxq(
> +        self, supported_capabilities: MutableSet, unsupported_capabilities: MutableSet
> +    ) -> None:
> +        """Get all rxq capabilities and divide them into supported and unsupported.
> +
> +        Args:
> +            supported_capabilities: A set where capabilities which are supported will be stored.
> +            unsupported_capabilities: A set where capabilities which are
> +                not supported will be stored.
> +        """
> +        self._logger.debug("Getting rxq capabilities.")
> +        command = "show rxq info 0 0"
> +        rxq_info = self.send_command(command)
> +        for line in rxq_info.split("\n"):
> +            bare_line = line.strip()
> +            if bare_line.startswith("RX scattered packets:"):
> +                if bare_line.endswith("on"):
> +                    supported_capabilities.add(NicCapability.scattered_rx)
> +                else:
> +                    unsupported_capabilities.add(NicCapability.scattered_rx)

It doesn't look like this works in normal condition. I've noticed that 
this appears as "on" if I set --max-pkt-len=9000 on the E810-C. 
Otherwise it's off... and with Jeremy's patch based on this, the 
pmd_buffer_scatter test gets skipped when it's supported.

Apart from this, everything else seems to work as expected. I'll send a 
review of the code as soon as possible.
  
Luca Vizzarro May 22, 2024, 2:58 p.m. UTC | #2
Hi Juraj,

Here's my review. Excuse me for the unordinary format, but I thought
it would have just been easier to convey my suggestions through code.
Apart from the smaller suggestions, the most important one I think is
that we should make sure to enforce type checking (and hinting).
Overall I like your approach, but I think it'd be better to initialise
all the required variables per test case, so we can access them
directly without doing checks everytime. The easiest approach I can see
to do this though, is to decorate all the test cases, for example
through @test. It'd be a somewhat important change as it changes the
test writing API, but it brings some improvements while making the
system more resilient.

The comments in the code are part of the review and may refer to
either your code or mine. The diff is in working order, so you could
test the functionality if you wished.

Best regards,
Luca

---
diff --git a/dts/framework/remote_session/__init__.py b/dts/framework/remote_session/__init__.py
index f18a9f2259..d4dfed3a58 100644
--- a/dts/framework/remote_session/__init__.py
+++ b/dts/framework/remote_session/__init__.py
@@ -22,6 +22,9 @@
  from .python_shell import PythonShell
  from .remote_session import CommandResult, RemoteSession
  from .ssh_session import SSHSession
+
+# in my testpmd params series these imports are removed as they promote eager module loading,
+# significantly increasing the chances of circular dependencies
  from .testpmd_shell import NicCapability, TestPmdShell
  
  
diff --git a/dts/framework/remote_session/testpmd_shell.py b/dts/framework/remote_session/testpmd_shell.py
index f6783af621..2b87e2e5c8 100644
--- a/dts/framework/remote_session/testpmd_shell.py
+++ b/dts/framework/remote_session/testpmd_shell.py
@@ -16,7 +16,6 @@
  """
  
  import time
-from collections.abc import MutableSet
  from enum import Enum, auto
  from functools import partial
  from pathlib import PurePath
@@ -232,9 +231,8 @@ def close(self) -> None:
          self.send_command("quit", "")
          return super().close()
  
-    def get_capas_rxq(
-        self, supported_capabilities: MutableSet, unsupported_capabilities: MutableSet
-    ) -> None:
+    # the built-in `set` is a mutable set. Is there an advantage to using MutableSet?
+    def get_capas_rxq(self, supported_capabilities: set, unsupported_capabilities: set) -> None:
          """Get all rxq capabilities and divide them into supported and unsupported.
  
          Args:
@@ -243,6 +241,7 @@ def get_capas_rxq(
                  not supported will be stored.
          """
          self._logger.debug("Getting rxq capabilities.")
+        # this assumes that the used ports are all the same. Could this be of concern?
          command = "show rxq info 0 0"
          rxq_info = self.send_command(command)
          for line in rxq_info.split("\n"):
@@ -270,4 +269,6 @@ class NicCapability(Enum):
      `unsupported_capabilities` based on their support.
      """
  
+    # partial is just a high-order function that pre-fills the arguments... but we have no arguments
+    # here? Was this intentional?
      scattered_rx = partial(TestPmdShell.get_capas_rxq)
diff --git a/dts/framework/runner.py b/dts/framework/runner.py
index 7407ea30b8..db02735ee9 100644
--- a/dts/framework/runner.py
+++ b/dts/framework/runner.py
@@ -20,12 +20,13 @@
  import importlib
  import inspect
  import os
-import re
  import sys
  from pathlib import Path
  from types import MethodType
  from typing import Iterable, Sequence
  
+from framework.remote_session.testpmd_shell import NicCapability
+
  from .config import (
      BuildTargetConfiguration,
      Configuration,
@@ -50,7 +51,7 @@
      TestSuiteResult,
      TestSuiteWithCases,
  )
-from .test_suite import TestSuite
+from .test_suite import TestCase, TestCaseType, TestSuite
  from .testbed_model import SutNode, TGNode
  
  
@@ -305,7 +306,7 @@ def is_test_suite(object) -> bool:
  
      def _filter_test_cases(
          self, test_suite_class: type[TestSuite], test_cases_to_run: Sequence[str]
-    ) -> tuple[list[MethodType], list[MethodType]]:
+    ) -> tuple[list[type[TestCase]], list[type[TestCase]]]:
          """Filter `test_cases_to_run` from `test_suite_class`.
  
          There are two rounds of filtering if `test_cases_to_run` is not empty.
@@ -327,30 +328,28 @@ def _filter_test_cases(
          """
          func_test_cases = []
          perf_test_cases = []
-        name_method_tuples = inspect.getmembers(test_suite_class, inspect.isfunction)
+        # By introducing the TestCase class this could be simplified.
+        # Also adding separation of concerns, delegating the auto discovery of test cases to the
+        # test suite class.
          if test_cases_to_run:
-            name_method_tuples = [
-                (name, method) for name, method in name_method_tuples if name in test_cases_to_run
-            ]
-            if len(name_method_tuples) < len(test_cases_to_run):
+            test_cases = test_suite_class.get_test_cases(lambda t: t.__name__ in test_cases_to_run)
+            if len(test_cases) < len(test_cases_to_run):
                  missing_test_cases = set(test_cases_to_run) - {
-                    name for name, _ in name_method_tuples
+                    test_case.__name__ for test_case in test_cases
                  }
                  raise ConfigurationError(
                      f"Test cases {missing_test_cases} not found among methods "
                      f"of {test_suite_class.__name__}."
                  )
+        else:
+            test_cases = test_suite_class.get_test_cases()
  
-        for test_case_name, test_case_method in name_method_tuples:
-            if re.match(self._func_test_case_regex, test_case_name):
-                func_test_cases.append(test_case_method)
-            elif re.match(self._perf_test_case_regex, test_case_name):
-                perf_test_cases.append(test_case_method)
-            elif test_cases_to_run:
-                raise ConfigurationError(
-                    f"Method '{test_case_name}' matches neither "
-                    f"a functional nor a performance test case name."
-                )
+        for test_case in test_cases:
+            match test_case.type:
+                case TestCaseType.PERFORMANCE:
+                    perf_test_cases.append(test_case)
+                case TestCaseType.FUNCTIONAL:
+                    func_test_cases.append(test_case)
  
          return func_test_cases, perf_test_cases
  
@@ -489,6 +488,17 @@ def _run_build_target(
                  self._logger.exception("Build target teardown failed.")
                  build_target_result.update_teardown(Result.FAIL, e)
  
+    def _get_supported_required_capabilities(
+        self, sut_node: SutNode, test_suites_with_cases: Iterable[TestSuiteWithCases]
+    ) -> set[NicCapability]:
+        required_capabilities = set()
+        for test_suite_with_cases in test_suites_with_cases:
+            required_capabilities.update(test_suite_with_cases.req_capabilities)
+        self._logger.debug(f"Found required capabilities: {required_capabilities}")
+        if required_capabilities:
+            return sut_node.get_supported_capabilities(required_capabilities)
+        return set()
+
      def _run_test_suites(
          self,
          sut_node: SutNode,
@@ -518,18 +528,17 @@ def _run_test_suites(
              test_suites_with_cases: The test suites with test cases to run.
          """
          end_build_target = False
-        required_capabilities = set()
-        supported_capabilities = set()
-        for test_suite_with_cases in test_suites_with_cases:
-            required_capabilities.update(test_suite_with_cases.req_capabilities)
-        self._logger.debug(f"Found required capabilities: {required_capabilities}")
-        if required_capabilities:
-            supported_capabilities = sut_node.get_supported_capabilities(required_capabilities)
+        # extract this logic
+        supported_capabilities = self._get_supported_required_capabilities(
+            sut_node, test_suites_with_cases
+        )
          for test_suite_with_cases in test_suites_with_cases:
              test_suite_result = build_target_result.add_test_suite(test_suite_with_cases)
+            # not against this but perhaps something more explanatory like mark_skip_to_unsupported?
              test_suite_with_cases.mark_skip(supported_capabilities)
              try:
-                if test_suite_with_cases:
+                # is_any_supported is more self-explanatory than an ambiguous boolean check
+                if test_suite_with_cases.is_any_supported():
                      self._run_test_suite(
                          sut_node,
                          tg_node,
@@ -619,7 +628,7 @@ def _run_test_suite(
      def _execute_test_suite(
          self,
          test_suite: TestSuite,
-        test_cases: Iterable[MethodType],
+        test_cases: Iterable[type[TestCase]],
          test_suite_result: TestSuiteResult,
      ) -> None:
          """Execute all `test_cases` in `test_suite`.
@@ -640,7 +649,7 @@ def _execute_test_suite(
              test_case_result = test_suite_result.add_test_case(test_case_name)
              all_attempts = SETTINGS.re_run + 1
              attempt_nr = 1
-            if TestSuiteWithCases.should_not_be_skipped(test_case_method):
+            if not test_case_method.skip:
                  self._run_test_case(test_suite, test_case_method, test_case_result)
                  while not test_case_result and attempt_nr < all_attempts:
                      attempt_nr += 1
@@ -656,7 +665,7 @@ def _execute_test_suite(
      def _run_test_case(
          self,
          test_suite: TestSuite,
-        test_case_method: MethodType,
+        test_case_method: type[TestCase],
          test_case_result: TestCaseResult,
      ) -> None:
          """Setup, execute and teardown `test_case_method` from `test_suite`.
@@ -702,7 +711,7 @@ def _run_test_case(
      def _execute_test_case(
          self,
          test_suite: TestSuite,
-        test_case_method: MethodType,
+        test_case_method: type[TestCase],
          test_case_result: TestCaseResult,
      ) -> None:
          """Execute `test_case_method` from `test_suite`, record the result and handle failures.
@@ -716,7 +725,8 @@ def _execute_test_case(
          test_case_name = test_case_method.__name__
          try:
              self._logger.info(f"Starting test case execution: {test_case_name}")
-            test_case_method(test_suite)
+            # Explicit method binding is now required, otherwise mypy complains
+            MethodType(test_case_method, test_suite)()
              test_case_result.update(Result.PASS)
              self._logger.info(f"Test case execution PASSED: {test_case_name}")
  
diff --git a/dts/framework/test_result.py b/dts/framework/test_result.py
index 26c58a8606..82b2dc17b8 100644
--- a/dts/framework/test_result.py
+++ b/dts/framework/test_result.py
@@ -24,10 +24,9 @@
  """
  
  import os.path
-from collections.abc import MutableSequence, MutableSet
+from collections.abc import MutableSequence
  from dataclasses import dataclass, field
  from enum import Enum, auto
-from types import MethodType
  from typing import Union
  
  from framework.remote_session import NicCapability
@@ -46,7 +45,7 @@
  from .exception import DTSError, ErrorSeverity
  from .logger import DTSLogger
  from .settings import SETTINGS
-from .test_suite import TestSuite
+from .test_suite import TestCase, TestSuite
  
  
  @dataclass(slots=True, frozen=True)
@@ -65,7 +64,7 @@ class is to hold a subset of test cases (which could be all test cases) because
      """
  
      test_suite_class: type[TestSuite]
-    test_cases: list[MethodType]
+    test_cases: list[type[TestCase]]
      req_capabilities: set[NicCapability] = field(default_factory=set, init=False)
  
      def __post_init__(self):
@@ -86,7 +85,7 @@ def create_config(self) -> TestSuiteConfig:
              test_cases=[test_case.__name__ for test_case in self.test_cases],
          )
  
-    def mark_skip(self, supported_capabilities: MutableSet[NicCapability]) -> None:
+    def mark_skip(self, supported_capabilities: set[NicCapability]) -> None:
          """Mark the test suite and test cases to be skipped.
  
          The mark is applied is object to be skipped requires any capabilities and at least one of
@@ -95,26 +94,15 @@ def mark_skip(self, supported_capabilities: MutableSet[NicCapability]) -> None:
          Args:
              supported_capabilities: The supported capabilities.
          """
-        for test_object in [self.test_suite_class] + self.test_cases:
-            if set(getattr(test_object, "req_capa", [])) - supported_capabilities:
+        for test_object in [self.test_suite_class, *self.test_cases]:
+            # mypy picks up that both TestSuite and TestCase implement RequiresCapabilities and is
+            # happy. We could explicitly type hint the list for readability if we preferred.
+            if test_object.required_capabilities - supported_capabilities:
+                # the latest version of mypy complains about this in the original code because
+                # test_object can be distinct classes. The added protocol solves this
                  test_object.skip = True
  
-    @staticmethod
-    def should_not_be_skipped(test_object: Union[type[TestSuite] | MethodType]) -> bool:
-        """Figure out whether `test_object` should be skipped.
-
-        If `test_object` is a :class:`TestSuite`, its test cases are not checked,
-        only the class itself.
-
-        Args:
-            test_object: The test suite or test case to be inspected.
-
-        Returns:
-            :data:`True` if the test suite or test case should be skipped, :data:`False` otherwise.
-        """
-        return not getattr(test_object, "skip", False)
-
-    def __bool__(self) -> bool:
+    def is_any_supported(self) -> bool:
          """The truth value is determined by whether the test suite should be run.
  
          Returns:
@@ -122,10 +110,12 @@ def __bool__(self) -> bool:
          """
          found_test_case_to_run = False
          for test_case in self.test_cases:
-            if self.should_not_be_skipped(test_case):
+            # mypy and the TestCase decorators now ensure that the attributes always exist
+            # so the above static method is no longer needed
+            if not test_case.skip:
                  found_test_case_to_run = True
                  break
-        return found_test_case_to_run and self.should_not_be_skipped(self.test_suite_class)
+        return found_test_case_to_run and not self.test_suite_class.skip
  
  
  class Result(Enum):
diff --git a/dts/framework/test_suite.py b/dts/framework/test_suite.py
index 07cdd294b9..d03f8db712 100644
--- a/dts/framework/test_suite.py
+++ b/dts/framework/test_suite.py
@@ -13,9 +13,10 @@
      * Test case verification.
  """
  
-from collections.abc import Callable
+from enum import Enum, auto
+import inspect
  from ipaddress import IPv4Interface, IPv6Interface, ip_interface
-from typing import ClassVar, Union
+from typing import Callable, ClassVar, Protocol, TypeVar, Union, cast
  
  from scapy.layers.inet import IP  # type: ignore[import]
  from scapy.layers.l2 import Ether  # type: ignore[import]
@@ -30,7 +31,14 @@
  from .utils import get_packet_summaries
  
  
-class TestSuite(object):
+# a protocol/interface for common fields. The defaults are correctly picked up
+# by child concrete classes.
+class RequiresCapabilities(Protocol):
+    skip: ClassVar[bool] = False
+    required_capabilities: ClassVar[set[NicCapability]] = set()
+
+
+class TestSuite(RequiresCapabilities):
      """The base class with building blocks needed by most test cases.
  
          * Test suite setup/cleanup methods to override,
@@ -65,7 +73,6 @@ class TestSuite(object):
      #: Whether the test suite is blocking. A failure of a blocking test suite
      #: will block the execution of all subsequent test suites in the current build target.
      is_blocking: ClassVar[bool] = False
-    skip: bool
      _logger: DTSLogger
      _port_links: list[PortLink]
      _sut_port_ingress: Port
@@ -93,7 +100,7 @@ def __init__(
          """
          self.sut_node = sut_node
          self.tg_node = tg_node
-        self.skip = False
+
          self._logger = get_dts_logger(self.__class__.__name__)
          self._port_links = []
          self._process_links()
@@ -110,6 +117,23 @@ def __init__(
          self._tg_ip_address_egress = ip_interface("192.168.100.3/24")
          self._tg_ip_address_ingress = ip_interface("192.168.101.3/24")
  
+    # move the discovery of the test cases to TestSuite for separation of concerns
+    @classmethod
+    def get_test_cases(
+        cls, filter: Callable[[type["TestCase"]], bool] | None = None
+    ) -> set[type["TestCase"]]:
+        test_cases = set()
+        for _, method in inspect.getmembers(cls, inspect.isfunction):
+            # at runtime the function remains a function with custom attributes. An ininstance check
+            # unfortunately wouldn't work. Therefore force and test for the presence of TestCaseType
+            test_case = cast(type[TestCase], method)
+            try:
+                if isinstance(test_case.type, TestCaseType) and (not filter or filter(test_case)):
+                    test_cases.add(test_case)
+            except AttributeError:
+                pass
+        return test_cases
+
      def _process_links(self) -> None:
          """Construct links between SUT and TG ports."""
          for sut_port in self.sut_node.ports:
@@ -367,8 +391,46 @@ def _verify_l3_packet(self, received_packet: IP, expected_packet: IP) -> bool:
          return True
  
  
-def requires(capability: NicCapability) -> Callable:
-    """A decorator that marks the decorated test case or test suite as one to be skipped.
+# generic type for a method of an instance of TestSuite
+M = TypeVar("M", bound=Callable[[TestSuite], None])
+
+
+class TestCaseType(Enum):
+    FUNCTIONAL = auto()
+    PERFORMANCE = auto()
+
+
+# the protocol here is merely for static type checking and hinting.
+# the defaults don't get applied to functions like it does with inheriting
+# classes. The cast here is necessary as we are forcing mypy to understand
+# we want to treat the function as TestCase. When all the attributes are correctly
+# initialised this is fine.
+class TestCase(RequiresCapabilities, Protocol[M]):
+    type: ClassVar[TestCaseType]
+    __call__: M  # necessary for mypy so that it can treat this class as the function it's shadowing
+
+    @staticmethod
+    def make_decorator(test_case_type: TestCaseType):
+        def _decorator(func: M) -> type[TestCase]:
+            test_case = cast(type[TestCase], func)
+            test_case.skip = False
+            test_case.required_capabilities = set()
+            test_case.type = test_case_type
+            return test_case
+
+        return _decorator
+
+
+# this now requires to tag all test cases with the following decorators and the advantage of:
+# - a cleaner auto discovery
+# - enforcing the TestCase type
+# - initialising all the required attributes for test cases
+test = TestCase.make_decorator(TestCaseType.FUNCTIONAL)
+perf_test = TestCase.make_decorator(TestCaseType.PERFORMANCE)
+
+
+def requires(*capabilities: NicCapability):
+    """A decorator that marks the decorated test case or test suite as skippable.
  
      Args:
          The capability that's required by the decorated test case or test suite.
@@ -377,11 +439,8 @@ def requires(capability: NicCapability) -> Callable:
          The decorated function.
      """
  
-    def add_req_capa(func) -> Callable:
-        if hasattr(func, "req_capa"):
-            func.req_capa.append(capability)
-        else:
-            func.req_capa = [capability]
-        return func
+    def add_req_capa(test_case: type[TestCase]) -> type[TestCase]:
+        test_case.required_capabilities.update(capabilities)
+        return test_case
  
      return add_req_capa
diff --git a/dts/tests/TestSuite_hello_world.py b/dts/tests/TestSuite_hello_world.py
index 31b1564582..61533665f8 100644
--- a/dts/tests/TestSuite_hello_world.py
+++ b/dts/tests/TestSuite_hello_world.py
@@ -8,7 +8,7 @@
  """
  
  from framework.remote_session import NicCapability
-from framework.test_suite import TestSuite, requires
+from framework.test_suite import TestSuite, requires, test
  from framework.testbed_model import (
      LogicalCoreCount,
      LogicalCoreCountFilter,
@@ -28,7 +28,8 @@ def set_up_suite(self) -> None:
          self.app_helloworld_path = self.sut_node.build_dpdk_app("helloworld")
  
      @requires(NicCapability.scattered_rx)
-    def test_hello_world_single_core(self) -> None:
+    @test
+    def hello_world_single_core(self) -> None:
          """Single core test case.
  
          Steps:
@@ -47,7 +48,8 @@ def test_hello_world_single_core(self) -> None:
              f"helloworld didn't start on lcore{lcores[0]}",
          )
  
-    def test_hello_world_all_cores(self) -> None:
+    @test
+    def hello_world_all_cores(self) -> None:
          """All cores test case.
  
          Steps:
  
Nicholas Pratte May 24, 2024, 8:51 p.m. UTC | #3
I think this implementation is great, and I plan on testing it
properly with the jumbo frames suite that I am developing before
giving the final review. The only input that I could reasonably give
is a couple rewordings on the docstrings which I'll highlight below.

On Thu, Apr 11, 2024 at 4:48 AM Juraj Linkeš <juraj.linkes@pantheon.tech> wrote:
>
> The devices under test may not support the capabilities required by
> various test cases. Add support for:
> 1. Marking test suites and test cases with required capabilities,
> 2. Getting which required capabilities are supported by the device under
>    test,
> 3. And then skipping test suites and test cases if their required
>    capabilities are not supported by the device.
>
> Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
> ---
>  dts/framework/remote_session/__init__.py      |  2 +-
>  dts/framework/remote_session/testpmd_shell.py | 44 ++++++++-
>  dts/framework/runner.py                       | 46 ++++++++--
>  dts/framework/test_result.py                  | 90 +++++++++++++++----
>  dts/framework/test_suite.py                   | 25 ++++++
>  dts/framework/testbed_model/sut_node.py       | 25 +++++-
>  dts/tests/TestSuite_hello_world.py            |  4 +-
>  7 files changed, 204 insertions(+), 32 deletions(-)
>
> diff --git a/dts/framework/remote_session/__init__.py b/dts/framework/remote_session/__init__.py
> index 1910c81c3c..f18a9f2259 100644
> --- a/dts/framework/remote_session/__init__.py
> +++ b/dts/framework/remote_session/__init__.py
> @@ -22,7 +22,7 @@
>  from .python_shell import PythonShell
>  from .remote_session import CommandResult, RemoteSession
>  from .ssh_session import SSHSession
> -from .testpmd_shell import TestPmdShell
> +from .testpmd_shell import NicCapability, TestPmdShell
>
>
>  def create_remote_session(
> diff --git a/dts/framework/remote_session/testpmd_shell.py b/dts/framework/remote_session/testpmd_shell.py
> index cb2ab6bd00..f6783af621 100644
> --- a/dts/framework/remote_session/testpmd_shell.py
> +++ b/dts/framework/remote_session/testpmd_shell.py
> @@ -16,7 +16,9 @@
>  """
>
>  import time
> -from enum import auto
> +from collections.abc import MutableSet
> +from enum import Enum, auto
> +from functools import partial
>  from pathlib import PurePath
>  from typing import Callable, ClassVar
>
> @@ -229,3 +231,43 @@ def close(self) -> None:
>          """Overrides :meth:`~.interactive_shell.close`."""
>          self.send_command("quit", "")
>          return super().close()
> +
> +    def get_capas_rxq(
> +        self, supported_capabilities: MutableSet, unsupported_capabilities: MutableSet
> +    ) -> None:
> +        """Get all rxq capabilities and divide them into supported and unsupported.
> +
> +        Args:
> +            supported_capabilities: A set where capabilities which are supported will be stored.
> +            unsupported_capabilities: A set where capabilities which are
> +                not supported will be stored.

Maybe change the arg descriptions to something like "A set where
supported capabilities are stored" and "A set where unsupported
capabilities are stored."

> +        """
> +        self._logger.debug("Getting rxq capabilities.")
> +        command = "show rxq info 0 0"
> +        rxq_info = self.send_command(command)
> +        for line in rxq_info.split("\n"):
> +            bare_line = line.strip()
> +            if bare_line.startswith("RX scattered packets:"):
> +                if bare_line.endswith("on"):
> +                    supported_capabilities.add(NicCapability.scattered_rx)
> +                else:
> +                    unsupported_capabilities.add(NicCapability.scattered_rx)
> +
> +
> +class NicCapability(Enum):
> +    """A mapping between capability names and the associated :class:`TestPmdShell` methods.
> +
> +    The :class:`TestPmdShell` method executes the command that checks
> +    whether the capability is supported.
> +
> +    The signature of each :class:`TestPmdShell` method must be::
> +
> +        fn(self, supported_capabilities: MutableSet, unsupported_capabilities: MutableSet) -> None
> +
> +    The function must execute the testpmd command from which the capability support can be obtained.

"Which capability supported can be obtained." I think there was tense
error here.

> +    If multiple capabilities can be obtained from the same testpmd command, each should be obtained
> +    in one function. These capabilities should then be added to `supported_capabilities` or
> +    `unsupported_capabilities` based on their support.
> +    """
> +
> +    scattered_rx = partial(TestPmdShell.get_capas_rxq)
> diff --git a/dts/framework/runner.py b/dts/framework/runner.py
> index db8e3ba96b..7407ea30b8 100644
> --- a/dts/framework/runner.py
> +++ b/dts/framework/runner.py
> @@ -501,6 +501,12 @@ def _run_test_suites(
>          The method assumes the build target we're testing has already been built on the SUT node.
>          The current build target thus corresponds to the current DPDK build present on the SUT node.
>
> +        Before running any suites, the method determines whether they should be skipped
> +        by inspecting any required capabilities the test suite needs and comparing those
> +        to capabilities supported by the tested NIC. If all capabilities are supported,
> +        the suite is run. If all test cases in a test suite would be skipped, the whole test suite
> +        is skipped (the setup and teardown is not run).
> +
>          If a blocking test suite (such as the smoke test suite) fails, the rest of the test suites
>          in the current build target won't be executed.
>
> @@ -512,10 +518,30 @@ def _run_test_suites(
>              test_suites_with_cases: The test suites with test cases to run.
>          """
>          end_build_target = False
> +        required_capabilities = set()
> +        supported_capabilities = set()
> +        for test_suite_with_cases in test_suites_with_cases:
> +            required_capabilities.update(test_suite_with_cases.req_capabilities)
> +        self._logger.debug(f"Found required capabilities: {required_capabilities}")
> +        if required_capabilities:
> +            supported_capabilities = sut_node.get_supported_capabilities(required_capabilities)
>          for test_suite_with_cases in test_suites_with_cases:
>              test_suite_result = build_target_result.add_test_suite(test_suite_with_cases)
> +            test_suite_with_cases.mark_skip(supported_capabilities)
>              try:
> -                self._run_test_suite(sut_node, tg_node, test_suite_result, test_suite_with_cases)
> +                if test_suite_with_cases:
> +                    self._run_test_suite(
> +                        sut_node,
> +                        tg_node,
> +                        test_suite_result,
> +                        test_suite_with_cases,
> +                    )
> +                else:
> +                    self._logger.info(
> +                        f"Test suite execution SKIPPED: "
> +                        f"{test_suite_with_cases.test_suite_class.__name__}"
> +                    )
> +                    test_suite_result.update_setup(Result.SKIP)
>              except BlockingTestSuiteError as e:
>                  self._logger.exception(
>                      f"An error occurred within {test_suite_with_cases.test_suite_class.__name__}. "
> @@ -614,14 +640,18 @@ def _execute_test_suite(
>              test_case_result = test_suite_result.add_test_case(test_case_name)
>              all_attempts = SETTINGS.re_run + 1
>              attempt_nr = 1
> -            self._run_test_case(test_suite, test_case_method, test_case_result)
> -            while not test_case_result and attempt_nr < all_attempts:
> -                attempt_nr += 1
> -                self._logger.info(
> -                    f"Re-running FAILED test case '{test_case_name}'. "
> -                    f"Attempt number {attempt_nr} out of {all_attempts}."
> -                )
> +            if TestSuiteWithCases.should_not_be_skipped(test_case_method):
>                  self._run_test_case(test_suite, test_case_method, test_case_result)
> +                while not test_case_result and attempt_nr < all_attempts:
> +                    attempt_nr += 1
> +                    self._logger.info(
> +                        f"Re-running FAILED test case '{test_case_name}'. "
> +                        f"Attempt number {attempt_nr} out of {all_attempts}."
> +                    )
> +                    self._run_test_case(test_suite, test_case_method, test_case_result)
> +            else:
> +                self._logger.info(f"Test case execution SKIPPED: {test_case_name}")
> +                test_case_result.update_setup(Result.SKIP)
>
>      def _run_test_case(
>          self,
> diff --git a/dts/framework/test_result.py b/dts/framework/test_result.py
> index 28f84fd793..26c58a8606 100644
> --- a/dts/framework/test_result.py
> +++ b/dts/framework/test_result.py
> @@ -24,12 +24,14 @@
>  """
>
>  import os.path
> -from collections.abc import MutableSequence
> -from dataclasses import dataclass
> +from collections.abc import MutableSequence, MutableSet
> +from dataclasses import dataclass, field
>  from enum import Enum, auto
>  from types import MethodType
>  from typing import Union
>
> +from framework.remote_session import NicCapability
> +
>  from .config import (
>      OS,
>      Architecture,
> @@ -64,6 +66,14 @@ class is to hold a subset of test cases (which could be all test cases) because
>
>      test_suite_class: type[TestSuite]
>      test_cases: list[MethodType]
> +    req_capabilities: set[NicCapability] = field(default_factory=set, init=False)
> +
> +    def __post_init__(self):
> +        """Gather the required capabilities of the test suite and all test cases."""
> +        for test_object in [self.test_suite_class] + self.test_cases:
> +            test_object.skip = False
> +            if hasattr(test_object, "req_capa"):
> +                self.req_capabilities.update(test_object.req_capa)
>
>      def create_config(self) -> TestSuiteConfig:
>          """Generate a :class:`TestSuiteConfig` from the stored test suite with test cases.
> @@ -76,6 +86,47 @@ def create_config(self) -> TestSuiteConfig:
>              test_cases=[test_case.__name__ for test_case in self.test_cases],
>          )
>
> +    def mark_skip(self, supported_capabilities: MutableSet[NicCapability]) -> None:
> +        """Mark the test suite and test cases to be skipped.
> +
> +        The mark is applied is object to be skipped requires any capabilities and at least one of

"The mark is applied if the object to be skipped."


> +        them is not among `capabilities`.

Maybe change 'capabilities' to 'supported_capabilities.' Unless I'm
just misunderstanding the comment.

> +
> +        Args:
> +            supported_capabilities: The supported capabilities.
> +        """
> +        for test_object in [self.test_suite_class] + self.test_cases:
> +            if set(getattr(test_object, "req_capa", [])) - supported_capabilities:
> +                test_object.skip = True
> +
> +    @staticmethod
> +    def should_not_be_skipped(test_object: Union[type[TestSuite] | MethodType]) -> bool:
> +        """Figure out whether `test_object` should be skipped.
> +
> +        If `test_object` is a :class:`TestSuite`, its test cases are not checked,
> +        only the class itself.
> +
> +        Args:
> +            test_object: The test suite or test case to be inspected.
> +
> +        Returns:
> +            :data:`True` if the test suite or test case should be skipped, :data:`False` otherwise.
> +        """
> +        return not getattr(test_object, "skip", False)
> +
> +    def __bool__(self) -> bool:
> +        """The truth value is determined by whether the test suite should be run.
> +
> +        Returns:
> +            :data:`False` if the test suite should be skipped, :data:`True` otherwise.
> +        """
> +        found_test_case_to_run = False
> +        for test_case in self.test_cases:
> +            if self.should_not_be_skipped(test_case):
> +                found_test_case_to_run = True
> +                break
> +        return found_test_case_to_run and self.should_not_be_skipped(self.test_suite_class)
> +
>
>  class Result(Enum):
>      """The possible states that a setup, a teardown or a test case may end up in."""
> @@ -170,12 +221,13 @@ def update_setup(self, result: Result, error: Exception | None = None) -> None:
>          self.setup_result.result = result
>          self.setup_result.error = error
>
> -        if result in [Result.BLOCK, Result.ERROR, Result.FAIL]:
> -            self.update_teardown(Result.BLOCK)
> -            self._block_result()
> +        if result != Result.PASS:
> +            result_to_mark = Result.BLOCK if result != Result.SKIP else Result.SKIP
> +            self.update_teardown(result_to_mark)
> +            self._mark_results(result_to_mark)
>
> -    def _block_result(self) -> None:
> -        r"""Mark the result as :attr:`~Result.BLOCK`\ed.
> +    def _mark_results(self, result) -> None:
> +        """Mark the result as well as the child result as `result`.
>
>          The blocking of child results should be done in overloaded methods.
>          """
> @@ -390,11 +442,11 @@ def add_sut_info(self, sut_info: NodeInfo) -> None:
>          self.sut_os_version = sut_info.os_version
>          self.sut_kernel_version = sut_info.kernel_version
>
> -    def _block_result(self) -> None:
> -        r"""Mark the result as :attr:`~Result.BLOCK`\ed."""
> +    def _mark_results(self, result) -> None:
> +        """Mark the result as well as the child result as `result`."""
>          for build_target in self._config.build_targets:
>              child_result = self.add_build_target(build_target)
> -            child_result.update_setup(Result.BLOCK)
> +            child_result.update_setup(result)
>
>
>  class BuildTargetResult(BaseResult):
> @@ -464,11 +516,11 @@ def add_build_target_info(self, versions: BuildTargetInfo) -> None:
>          self.compiler_version = versions.compiler_version
>          self.dpdk_version = versions.dpdk_version
>
> -    def _block_result(self) -> None:
> -        r"""Mark the result as :attr:`~Result.BLOCK`\ed."""
> +    def _mark_results(self, result) -> None:
> +        """Mark the result as well as the child result as `result`."""
>          for test_suite_with_cases in self._test_suites_with_cases:
>              child_result = self.add_test_suite(test_suite_with_cases)
> -            child_result.update_setup(Result.BLOCK)
> +            child_result.update_setup(result)
>
>
>  class TestSuiteResult(BaseResult):
> @@ -508,11 +560,11 @@ def add_test_case(self, test_case_name: str) -> "TestCaseResult":
>          self.child_results.append(result)
>          return result
>
> -    def _block_result(self) -> None:
> -        r"""Mark the result as :attr:`~Result.BLOCK`\ed."""
> +    def _mark_results(self, result) -> None:
> +        """Mark the result as well as the child result as `result`."""
>          for test_case_method in self._test_suite_with_cases.test_cases:
>              child_result = self.add_test_case(test_case_method.__name__)
> -            child_result.update_setup(Result.BLOCK)
> +            child_result.update_setup(result)
>
>
>  class TestCaseResult(BaseResult, FixtureResult):
> @@ -566,9 +618,9 @@ def add_stats(self, statistics: "Statistics") -> None:
>          """
>          statistics += self.result
>
> -    def _block_result(self) -> None:
> -        r"""Mark the result as :attr:`~Result.BLOCK`\ed."""
> -        self.update(Result.BLOCK)
> +    def _mark_results(self, result) -> None:
> +        r"""Mark the result as `result`."""
> +        self.update(result)
>
>      def __bool__(self) -> bool:
>          """The test case passed only if setup, teardown and the test case itself passed."""
> diff --git a/dts/framework/test_suite.py b/dts/framework/test_suite.py
> index 9c3b516002..07cdd294b9 100644
> --- a/dts/framework/test_suite.py
> +++ b/dts/framework/test_suite.py
> @@ -13,6 +13,7 @@
>      * Test case verification.
>  """
>
> +from collections.abc import Callable
>  from ipaddress import IPv4Interface, IPv6Interface, ip_interface
>  from typing import ClassVar, Union
>
> @@ -20,6 +21,8 @@
>  from scapy.layers.l2 import Ether  # type: ignore[import]
>  from scapy.packet import Packet, Padding  # type: ignore[import]
>
> +from framework.remote_session import NicCapability
> +
>  from .exception import TestCaseVerifyError
>  from .logger import DTSLogger, get_dts_logger
>  from .testbed_model import Port, PortLink, SutNode, TGNode
> @@ -62,6 +65,7 @@ class TestSuite(object):
>      #: Whether the test suite is blocking. A failure of a blocking test suite
>      #: will block the execution of all subsequent test suites in the current build target.
>      is_blocking: ClassVar[bool] = False
> +    skip: bool
>      _logger: DTSLogger
>      _port_links: list[PortLink]
>      _sut_port_ingress: Port
> @@ -89,6 +93,7 @@ def __init__(
>          """
>          self.sut_node = sut_node
>          self.tg_node = tg_node
> +        self.skip = False
>          self._logger = get_dts_logger(self.__class__.__name__)
>          self._port_links = []
>          self._process_links()
> @@ -360,3 +365,23 @@ def _verify_l3_packet(self, received_packet: IP, expected_packet: IP) -> bool:
>          if received_packet.src != expected_packet.src or received_packet.dst != expected_packet.dst:
>              return False
>          return True
> +
> +
> +def requires(capability: NicCapability) -> Callable:
> +    """A decorator that marks the decorated test case or test suite as one to be skipped.

I think there might be an error here. Are you trying to say "A
decorator that marks the test case/test suite as having additional
requirements" ?

> +
> +    Args:
> +        The capability that's required by the decorated test case or test suite.
> +
> +    Returns:
> +        The decorated function.
> +    """
> +
> +    def add_req_capa(func) -> Callable:
> +        if hasattr(func, "req_capa"):
> +            func.req_capa.append(capability)
> +        else:
> +            func.req_capa = [capability]
> +        return func
> +
> +    return add_req_capa
> diff --git a/dts/framework/testbed_model/sut_node.py b/dts/framework/testbed_model/sut_node.py
> index 97aa26d419..1fb536735d 100644
> --- a/dts/framework/testbed_model/sut_node.py
> +++ b/dts/framework/testbed_model/sut_node.py
> @@ -15,7 +15,7 @@
>  import tarfile
>  import time
>  from pathlib import PurePath
> -from typing import Type
> +from typing import Iterable, Type
>
>  from framework.config import (
>      BuildTargetConfiguration,
> @@ -23,7 +23,7 @@
>      NodeInfo,
>      SutNodeConfiguration,
>  )
> -from framework.remote_session import CommandResult
> +from framework.remote_session import CommandResult, NicCapability, TestPmdShell
>  from framework.settings import SETTINGS
>  from framework.utils import MesonArgs
>
> @@ -228,6 +228,27 @@ def get_build_target_info(self) -> BuildTargetInfo:
>      def _guess_dpdk_remote_dir(self) -> PurePath:
>          return self.main_session.guess_dpdk_remote_dir(self._remote_tmp_dir)
>
> +    def get_supported_capabilities(
> +        self, capabilities: Iterable[NicCapability]
> +    ) -> set[NicCapability]:
> +        """Get the supported capabilities of the current NIC from `capabilities`.

I wonder if it might be more readable to change the 'capabilities'
variable to 'required_capabilities' or something along those lines.
Although I do understand why you have selected 'capabilities' in the
first place if the capabilities being passed in may not necessarily be
required capabilities 100% of the time.

> +
> +        Args:
> +            capabilities: The capabilities to verify.
> +
> +        Returns:
> +            The set of supported capabilities of the current NIC.
> +        """
> +        supported_capas: set[NicCapability] = set()
> +        unsupported_capas: set[NicCapability] = set()
> +        self._logger.debug(f"Checking which capabilities from {capabilities} NIC are supported.")
> +        testpmd_shell = self.create_interactive_shell(TestPmdShell, privileged=True)
> +        for capability in capabilities:
> +            if capability not in supported_capas or capability not in unsupported_capas:
> +                capability.value(testpmd_shell, supported_capas, unsupported_capas)
> +        del testpmd_shell
> +        return supported_capas
> +
>      def _set_up_build_target(self, build_target_config: BuildTargetConfiguration) -> None:
>          """Setup DPDK on the SUT node.
>
> diff --git a/dts/tests/TestSuite_hello_world.py b/dts/tests/TestSuite_hello_world.py
> index fd7ff1534d..31b1564582 100644
> --- a/dts/tests/TestSuite_hello_world.py
> +++ b/dts/tests/TestSuite_hello_world.py
> @@ -7,7 +7,8 @@
>  No other EAL parameters apart from cores are used.
>  """
>
> -from framework.test_suite import TestSuite
> +from framework.remote_session import NicCapability
> +from framework.test_suite import TestSuite, requires
>  from framework.testbed_model import (
>      LogicalCoreCount,
>      LogicalCoreCountFilter,
> @@ -26,6 +27,7 @@ def set_up_suite(self) -> None:
>          """
>          self.app_helloworld_path = self.sut_node.build_dpdk_app("helloworld")
>
> +    @requires(NicCapability.scattered_rx)
>      def test_hello_world_single_core(self) -> None:
>          """Single core test case.
>
> --
> 2.34.1
>

The above comments are basically just nitpicks, but if nothing else, I
figured I'd bring it to your attention.
  

Patch

diff --git a/dts/framework/remote_session/__init__.py b/dts/framework/remote_session/__init__.py
index 1910c81c3c..f18a9f2259 100644
--- a/dts/framework/remote_session/__init__.py
+++ b/dts/framework/remote_session/__init__.py
@@ -22,7 +22,7 @@ 
 from .python_shell import PythonShell
 from .remote_session import CommandResult, RemoteSession
 from .ssh_session import SSHSession
-from .testpmd_shell import TestPmdShell
+from .testpmd_shell import NicCapability, TestPmdShell
 
 
 def create_remote_session(
diff --git a/dts/framework/remote_session/testpmd_shell.py b/dts/framework/remote_session/testpmd_shell.py
index cb2ab6bd00..f6783af621 100644
--- a/dts/framework/remote_session/testpmd_shell.py
+++ b/dts/framework/remote_session/testpmd_shell.py
@@ -16,7 +16,9 @@ 
 """
 
 import time
-from enum import auto
+from collections.abc import MutableSet
+from enum import Enum, auto
+from functools import partial
 from pathlib import PurePath
 from typing import Callable, ClassVar
 
@@ -229,3 +231,43 @@  def close(self) -> None:
         """Overrides :meth:`~.interactive_shell.close`."""
         self.send_command("quit", "")
         return super().close()
+
+    def get_capas_rxq(
+        self, supported_capabilities: MutableSet, unsupported_capabilities: MutableSet
+    ) -> None:
+        """Get all rxq capabilities and divide them into supported and unsupported.
+
+        Args:
+            supported_capabilities: A set where capabilities which are supported will be stored.
+            unsupported_capabilities: A set where capabilities which are
+                not supported will be stored.
+        """
+        self._logger.debug("Getting rxq capabilities.")
+        command = "show rxq info 0 0"
+        rxq_info = self.send_command(command)
+        for line in rxq_info.split("\n"):
+            bare_line = line.strip()
+            if bare_line.startswith("RX scattered packets:"):
+                if bare_line.endswith("on"):
+                    supported_capabilities.add(NicCapability.scattered_rx)
+                else:
+                    unsupported_capabilities.add(NicCapability.scattered_rx)
+
+
+class NicCapability(Enum):
+    """A mapping between capability names and the associated :class:`TestPmdShell` methods.
+
+    The :class:`TestPmdShell` method executes the command that checks
+    whether the capability is supported.
+
+    The signature of each :class:`TestPmdShell` method must be::
+
+        fn(self, supported_capabilities: MutableSet, unsupported_capabilities: MutableSet) -> None
+
+    The function must execute the testpmd command from which the capability support can be obtained.
+    If multiple capabilities can be obtained from the same testpmd command, each should be obtained
+    in one function. These capabilities should then be added to `supported_capabilities` or
+    `unsupported_capabilities` based on their support.
+    """
+
+    scattered_rx = partial(TestPmdShell.get_capas_rxq)
diff --git a/dts/framework/runner.py b/dts/framework/runner.py
index db8e3ba96b..7407ea30b8 100644
--- a/dts/framework/runner.py
+++ b/dts/framework/runner.py
@@ -501,6 +501,12 @@  def _run_test_suites(
         The method assumes the build target we're testing has already been built on the SUT node.
         The current build target thus corresponds to the current DPDK build present on the SUT node.
 
+        Before running any suites, the method determines whether they should be skipped
+        by inspecting any required capabilities the test suite needs and comparing those
+        to capabilities supported by the tested NIC. If all capabilities are supported,
+        the suite is run. If all test cases in a test suite would be skipped, the whole test suite
+        is skipped (the setup and teardown is not run).
+
         If a blocking test suite (such as the smoke test suite) fails, the rest of the test suites
         in the current build target won't be executed.
 
@@ -512,10 +518,30 @@  def _run_test_suites(
             test_suites_with_cases: The test suites with test cases to run.
         """
         end_build_target = False
+        required_capabilities = set()
+        supported_capabilities = set()
+        for test_suite_with_cases in test_suites_with_cases:
+            required_capabilities.update(test_suite_with_cases.req_capabilities)
+        self._logger.debug(f"Found required capabilities: {required_capabilities}")
+        if required_capabilities:
+            supported_capabilities = sut_node.get_supported_capabilities(required_capabilities)
         for test_suite_with_cases in test_suites_with_cases:
             test_suite_result = build_target_result.add_test_suite(test_suite_with_cases)
+            test_suite_with_cases.mark_skip(supported_capabilities)
             try:
-                self._run_test_suite(sut_node, tg_node, test_suite_result, test_suite_with_cases)
+                if test_suite_with_cases:
+                    self._run_test_suite(
+                        sut_node,
+                        tg_node,
+                        test_suite_result,
+                        test_suite_with_cases,
+                    )
+                else:
+                    self._logger.info(
+                        f"Test suite execution SKIPPED: "
+                        f"{test_suite_with_cases.test_suite_class.__name__}"
+                    )
+                    test_suite_result.update_setup(Result.SKIP)
             except BlockingTestSuiteError as e:
                 self._logger.exception(
                     f"An error occurred within {test_suite_with_cases.test_suite_class.__name__}. "
@@ -614,14 +640,18 @@  def _execute_test_suite(
             test_case_result = test_suite_result.add_test_case(test_case_name)
             all_attempts = SETTINGS.re_run + 1
             attempt_nr = 1
-            self._run_test_case(test_suite, test_case_method, test_case_result)
-            while not test_case_result and attempt_nr < all_attempts:
-                attempt_nr += 1
-                self._logger.info(
-                    f"Re-running FAILED test case '{test_case_name}'. "
-                    f"Attempt number {attempt_nr} out of {all_attempts}."
-                )
+            if TestSuiteWithCases.should_not_be_skipped(test_case_method):
                 self._run_test_case(test_suite, test_case_method, test_case_result)
+                while not test_case_result and attempt_nr < all_attempts:
+                    attempt_nr += 1
+                    self._logger.info(
+                        f"Re-running FAILED test case '{test_case_name}'. "
+                        f"Attempt number {attempt_nr} out of {all_attempts}."
+                    )
+                    self._run_test_case(test_suite, test_case_method, test_case_result)
+            else:
+                self._logger.info(f"Test case execution SKIPPED: {test_case_name}")
+                test_case_result.update_setup(Result.SKIP)
 
     def _run_test_case(
         self,
diff --git a/dts/framework/test_result.py b/dts/framework/test_result.py
index 28f84fd793..26c58a8606 100644
--- a/dts/framework/test_result.py
+++ b/dts/framework/test_result.py
@@ -24,12 +24,14 @@ 
 """
 
 import os.path
-from collections.abc import MutableSequence
-from dataclasses import dataclass
+from collections.abc import MutableSequence, MutableSet
+from dataclasses import dataclass, field
 from enum import Enum, auto
 from types import MethodType
 from typing import Union
 
+from framework.remote_session import NicCapability
+
 from .config import (
     OS,
     Architecture,
@@ -64,6 +66,14 @@  class is to hold a subset of test cases (which could be all test cases) because
 
     test_suite_class: type[TestSuite]
     test_cases: list[MethodType]
+    req_capabilities: set[NicCapability] = field(default_factory=set, init=False)
+
+    def __post_init__(self):
+        """Gather the required capabilities of the test suite and all test cases."""
+        for test_object in [self.test_suite_class] + self.test_cases:
+            test_object.skip = False
+            if hasattr(test_object, "req_capa"):
+                self.req_capabilities.update(test_object.req_capa)
 
     def create_config(self) -> TestSuiteConfig:
         """Generate a :class:`TestSuiteConfig` from the stored test suite with test cases.
@@ -76,6 +86,47 @@  def create_config(self) -> TestSuiteConfig:
             test_cases=[test_case.__name__ for test_case in self.test_cases],
         )
 
+    def mark_skip(self, supported_capabilities: MutableSet[NicCapability]) -> None:
+        """Mark the test suite and test cases to be skipped.
+
+        The mark is applied is object to be skipped requires any capabilities and at least one of
+        them is not among `capabilities`.
+
+        Args:
+            supported_capabilities: The supported capabilities.
+        """
+        for test_object in [self.test_suite_class] + self.test_cases:
+            if set(getattr(test_object, "req_capa", [])) - supported_capabilities:
+                test_object.skip = True
+
+    @staticmethod
+    def should_not_be_skipped(test_object: Union[type[TestSuite] | MethodType]) -> bool:
+        """Figure out whether `test_object` should be skipped.
+
+        If `test_object` is a :class:`TestSuite`, its test cases are not checked,
+        only the class itself.
+
+        Args:
+            test_object: The test suite or test case to be inspected.
+
+        Returns:
+            :data:`True` if the test suite or test case should be skipped, :data:`False` otherwise.
+        """
+        return not getattr(test_object, "skip", False)
+
+    def __bool__(self) -> bool:
+        """The truth value is determined by whether the test suite should be run.
+
+        Returns:
+            :data:`False` if the test suite should be skipped, :data:`True` otherwise.
+        """
+        found_test_case_to_run = False
+        for test_case in self.test_cases:
+            if self.should_not_be_skipped(test_case):
+                found_test_case_to_run = True
+                break
+        return found_test_case_to_run and self.should_not_be_skipped(self.test_suite_class)
+
 
 class Result(Enum):
     """The possible states that a setup, a teardown or a test case may end up in."""
@@ -170,12 +221,13 @@  def update_setup(self, result: Result, error: Exception | None = None) -> None:
         self.setup_result.result = result
         self.setup_result.error = error
 
-        if result in [Result.BLOCK, Result.ERROR, Result.FAIL]:
-            self.update_teardown(Result.BLOCK)
-            self._block_result()
+        if result != Result.PASS:
+            result_to_mark = Result.BLOCK if result != Result.SKIP else Result.SKIP
+            self.update_teardown(result_to_mark)
+            self._mark_results(result_to_mark)
 
-    def _block_result(self) -> None:
-        r"""Mark the result as :attr:`~Result.BLOCK`\ed.
+    def _mark_results(self, result) -> None:
+        """Mark the result as well as the child result as `result`.
 
         The blocking of child results should be done in overloaded methods.
         """
@@ -390,11 +442,11 @@  def add_sut_info(self, sut_info: NodeInfo) -> None:
         self.sut_os_version = sut_info.os_version
         self.sut_kernel_version = sut_info.kernel_version
 
-    def _block_result(self) -> None:
-        r"""Mark the result as :attr:`~Result.BLOCK`\ed."""
+    def _mark_results(self, result) -> None:
+        """Mark the result as well as the child result as `result`."""
         for build_target in self._config.build_targets:
             child_result = self.add_build_target(build_target)
-            child_result.update_setup(Result.BLOCK)
+            child_result.update_setup(result)
 
 
 class BuildTargetResult(BaseResult):
@@ -464,11 +516,11 @@  def add_build_target_info(self, versions: BuildTargetInfo) -> None:
         self.compiler_version = versions.compiler_version
         self.dpdk_version = versions.dpdk_version
 
-    def _block_result(self) -> None:
-        r"""Mark the result as :attr:`~Result.BLOCK`\ed."""
+    def _mark_results(self, result) -> None:
+        """Mark the result as well as the child result as `result`."""
         for test_suite_with_cases in self._test_suites_with_cases:
             child_result = self.add_test_suite(test_suite_with_cases)
-            child_result.update_setup(Result.BLOCK)
+            child_result.update_setup(result)
 
 
 class TestSuiteResult(BaseResult):
@@ -508,11 +560,11 @@  def add_test_case(self, test_case_name: str) -> "TestCaseResult":
         self.child_results.append(result)
         return result
 
-    def _block_result(self) -> None:
-        r"""Mark the result as :attr:`~Result.BLOCK`\ed."""
+    def _mark_results(self, result) -> None:
+        """Mark the result as well as the child result as `result`."""
         for test_case_method in self._test_suite_with_cases.test_cases:
             child_result = self.add_test_case(test_case_method.__name__)
-            child_result.update_setup(Result.BLOCK)
+            child_result.update_setup(result)
 
 
 class TestCaseResult(BaseResult, FixtureResult):
@@ -566,9 +618,9 @@  def add_stats(self, statistics: "Statistics") -> None:
         """
         statistics += self.result
 
-    def _block_result(self) -> None:
-        r"""Mark the result as :attr:`~Result.BLOCK`\ed."""
-        self.update(Result.BLOCK)
+    def _mark_results(self, result) -> None:
+        r"""Mark the result as `result`."""
+        self.update(result)
 
     def __bool__(self) -> bool:
         """The test case passed only if setup, teardown and the test case itself passed."""
diff --git a/dts/framework/test_suite.py b/dts/framework/test_suite.py
index 9c3b516002..07cdd294b9 100644
--- a/dts/framework/test_suite.py
+++ b/dts/framework/test_suite.py
@@ -13,6 +13,7 @@ 
     * Test case verification.
 """
 
+from collections.abc import Callable
 from ipaddress import IPv4Interface, IPv6Interface, ip_interface
 from typing import ClassVar, Union
 
@@ -20,6 +21,8 @@ 
 from scapy.layers.l2 import Ether  # type: ignore[import]
 from scapy.packet import Packet, Padding  # type: ignore[import]
 
+from framework.remote_session import NicCapability
+
 from .exception import TestCaseVerifyError
 from .logger import DTSLogger, get_dts_logger
 from .testbed_model import Port, PortLink, SutNode, TGNode
@@ -62,6 +65,7 @@  class TestSuite(object):
     #: Whether the test suite is blocking. A failure of a blocking test suite
     #: will block the execution of all subsequent test suites in the current build target.
     is_blocking: ClassVar[bool] = False
+    skip: bool
     _logger: DTSLogger
     _port_links: list[PortLink]
     _sut_port_ingress: Port
@@ -89,6 +93,7 @@  def __init__(
         """
         self.sut_node = sut_node
         self.tg_node = tg_node
+        self.skip = False
         self._logger = get_dts_logger(self.__class__.__name__)
         self._port_links = []
         self._process_links()
@@ -360,3 +365,23 @@  def _verify_l3_packet(self, received_packet: IP, expected_packet: IP) -> bool:
         if received_packet.src != expected_packet.src or received_packet.dst != expected_packet.dst:
             return False
         return True
+
+
+def requires(capability: NicCapability) -> Callable:
+    """A decorator that marks the decorated test case or test suite as one to be skipped.
+
+    Args:
+        The capability that's required by the decorated test case or test suite.
+
+    Returns:
+        The decorated function.
+    """
+
+    def add_req_capa(func) -> Callable:
+        if hasattr(func, "req_capa"):
+            func.req_capa.append(capability)
+        else:
+            func.req_capa = [capability]
+        return func
+
+    return add_req_capa
diff --git a/dts/framework/testbed_model/sut_node.py b/dts/framework/testbed_model/sut_node.py
index 97aa26d419..1fb536735d 100644
--- a/dts/framework/testbed_model/sut_node.py
+++ b/dts/framework/testbed_model/sut_node.py
@@ -15,7 +15,7 @@ 
 import tarfile
 import time
 from pathlib import PurePath
-from typing import Type
+from typing import Iterable, Type
 
 from framework.config import (
     BuildTargetConfiguration,
@@ -23,7 +23,7 @@ 
     NodeInfo,
     SutNodeConfiguration,
 )
-from framework.remote_session import CommandResult
+from framework.remote_session import CommandResult, NicCapability, TestPmdShell
 from framework.settings import SETTINGS
 from framework.utils import MesonArgs
 
@@ -228,6 +228,27 @@  def get_build_target_info(self) -> BuildTargetInfo:
     def _guess_dpdk_remote_dir(self) -> PurePath:
         return self.main_session.guess_dpdk_remote_dir(self._remote_tmp_dir)
 
+    def get_supported_capabilities(
+        self, capabilities: Iterable[NicCapability]
+    ) -> set[NicCapability]:
+        """Get the supported capabilities of the current NIC from `capabilities`.
+
+        Args:
+            capabilities: The capabilities to verify.
+
+        Returns:
+            The set of supported capabilities of the current NIC.
+        """
+        supported_capas: set[NicCapability] = set()
+        unsupported_capas: set[NicCapability] = set()
+        self._logger.debug(f"Checking which capabilities from {capabilities} NIC are supported.")
+        testpmd_shell = self.create_interactive_shell(TestPmdShell, privileged=True)
+        for capability in capabilities:
+            if capability not in supported_capas or capability not in unsupported_capas:
+                capability.value(testpmd_shell, supported_capas, unsupported_capas)
+        del testpmd_shell
+        return supported_capas
+
     def _set_up_build_target(self, build_target_config: BuildTargetConfiguration) -> None:
         """Setup DPDK on the SUT node.
 
diff --git a/dts/tests/TestSuite_hello_world.py b/dts/tests/TestSuite_hello_world.py
index fd7ff1534d..31b1564582 100644
--- a/dts/tests/TestSuite_hello_world.py
+++ b/dts/tests/TestSuite_hello_world.py
@@ -7,7 +7,8 @@ 
 No other EAL parameters apart from cores are used.
 """
 
-from framework.test_suite import TestSuite
+from framework.remote_session import NicCapability
+from framework.test_suite import TestSuite, requires
 from framework.testbed_model import (
     LogicalCoreCount,
     LogicalCoreCountFilter,
@@ -26,6 +27,7 @@  def set_up_suite(self) -> None:
         """
         self.app_helloworld_path = self.sut_node.build_dpdk_app("helloworld")
 
+    @requires(NicCapability.scattered_rx)
     def test_hello_world_single_core(self) -> None:
         """Single core test case.