[PATCH v4 3/3] dts: update tx_offload test from old dts

[Patrick Robb]

On Wed, Sep 24, 2025 at 12:47 PM Andrew Bailey <abailey at iol.unh.edu> wrote:

> Currently, the RX/TX offload test in old DTS expects the TX ports to be
> initially configured to use mbuf fast free. This is no longer the case
> and must be updated to assume mbuf fast free is not initially utilized
> by capable NICs. Add updated test suite to test mbuf fast free
> configuration.
>
> Signed-off-by: Andrew Bailey <abailey at iol.unh.edu>
> ---
>  doc/api/dts/tests.TestSuite_rx_tx_offload.rst |   8 ++
>  dts/tests/TestSuite_rx_tx_offload.py          | 128 ++++++++++++++++++
>  2 files changed, 136 insertions(+)
>  create mode 100644 doc/api/dts/tests.TestSuite_rx_tx_offload.rst
>  create mode 100644 dts/tests/TestSuite_rx_tx_offload.py
>
> diff --git a/doc/api/dts/tests.TestSuite_rx_tx_offload.rst
> b/doc/api/dts/tests.TestSuite_rx_tx_offload.rst
> new file mode 100644
> index 0000000000..225267a45f
> --- /dev/null
> +++ b/doc/api/dts/tests.TestSuite_rx_tx_offload.rst
> @@ -0,0 +1,8 @@
> +.. SPDX-License-Identifier: BSD-3-Clause
> +
> +rx_tx_offload Test Suite
> +=========================
>

Did you try to build the docs after adding this file? I might be wrong but
I think the syntax might be flawed. If you don't remember the docs build
process is:

meson setup build
ninja -C build doc


> +
> +.. automodule:: tests.TestSuite_rx_tx_offload
> +   :members:
> +   :show-inheritance:
> \ No newline at end of file
> diff --git a/dts/tests/TestSuite_rx_tx_offload.py
> b/dts/tests/TestSuite_rx_tx_offload.py
> new file mode 100644
> index 0000000000..6ae98068e4
> --- /dev/null
> +++ b/dts/tests/TestSuite_rx_tx_offload.py
> @@ -0,0 +1,128 @@
> +# SPDX-License-Identifier: BSD-3-Clause
> +# Copyright(c) 2025 University of New Hampshire
> +
> +"""RX TX offload test suite.
> +
> +Test the testpmd feature of configuring RX and TX offloads.
> +"""
> +
> +from framework.remote_session.testpmd_shell import (
> +    OffloadConfiguration,
> +    RxTxLiteralSwitch,
> +    TestPmdShell,
> +)
>

your branch needs to be rebased off of dpdk-next-dts/for-main. We have
merged Paul's DTS API patch, which means your imports are no longer valid
and will need to be updated.


> +from framework.test_suite import TestSuite, func_test
> +from framework.testbed_model.capability import NicCapability, requires
> +
> +
> +class TestRxTxOffload(TestSuite):
> +    """RX/TX offload test suite."""
> +
> +    def _check_config(
> +        self,
> +        testpmd: TestPmdShell,
> +        port_offload: str | None,
> +        rxtx: RxTxLiteralSwitch,
> +        port_id: int,
> +        /,
> +        queue_offload: list[str | None] | None = None,
> +        verify: bool = True,
> +    ) -> bool:
> +        config: OffloadConfiguration = testpmd.get_offload_config(rxtx,
> port_id, verify)
> +        if config.port.name != port_offload:
> +            return False
> +
> +        if queue_offload:
> +            for i, q in enumerate(config.queues):
> +                if q.name != queue_offload[i]:
> +                    return False
> +        return True
> +
> +    def _set_all_queues_mbuf_fast_free(
> +        self, testpmd: TestPmdShell, on: bool, port_id: int, num_queues:
> int, /, verify: bool = True
> +    ) -> None:
> +        for i in range(num_queues):
> +            testpmd.set_queue_mbuf_fast_free(on, port_id, i, verify)
> +
> +    @requires(NicCapability.PORT_TX_OFFLOAD_MBUF_FAST_FREE)
> +    @func_test
> +    def test_mbuf_fast_free_configuration_per_port(self) -> None:
> +        """Ensure mbuf_fast_free can be configured with testpmd per port.
> +
> +        Steps:
> +            * Start up testpmd shell.
> +            * Toggle mbuf_fast_free on per port.
> +            * Toggle mbuf_fast_free off per port.
> +
> +        Verify:
> +            * Mbuf_fast_free starts disabled.
> +            * Mbuf_fast_free can be configured on per port.
> +            * Mbuf_fast_free can be configured off per port.
> +        """
> +        with TestPmdShell() as testpmd:
> +            verify = True
> +            port_id = 0
> +            testpmd.start_all_ports()
> +
> +            # Ensure MBUF_FAST_FREE is disabled by default and verify
> +            self.verify(
> +                self._check_config(testpmd, None, "tx", port_id,
> verify=verify),
> +                "MBUF_FAST_FREE enabled on port start.",
> +            )
> +            # Enable MBUF_FAST_FREE per port and verify
> +            testpmd.set_port_mbuf_fast_free(True, port_id, verify)
> +            self.verify(
> +                self._check_config(
> +                    testpmd, "TX_OFFLOAD_MBUF_FAST_FREE", "tx", port_id,
> verify=verify
> +                ),
> +                "Failed to enable MBUF_FAST_FREE on port.",
> +            )
> +            # Disable MBUF_FAST_FREE per port and verify
> +            testpmd.set_port_mbuf_fast_free(False, port_id, verify)
> +            self.verify(
> +                self._check_config(testpmd, None, "tx", port_id,
> verify=verify),
> +                "Failed to disable MBUF_FAST_FREE on port.",
> +            )
> +
> +    @requires(NicCapability.QUEUE_TX_OFFLOAD_MBUF_FAST_FREE)
> +    @func_test
> +    def test_mbuf_fast_free_configuration_per_queue(self) -> None:
> +        """Ensure mbuf_fast_free can be configured with testpmd.
> +
> +        Steps:
> +            * Start up testpmd shell.
> +            * Toggle mbuf_fast_free on per queue.
> +            * Toggle mbuf_fast_free off per queue.
> +
> +        Verify:
> +            * Mbuf_fast_free starts disabled.
> +            * Mbuf_fast_free can be configured on per queue.
> +            * Mbuf_fast_free can be configured off per queue.
> +        """
> +        with TestPmdShell() as testpmd:
> +            verify = True
> +            port_id = 0
> +            num_queues = 4
> +            queue_off: list[str | None] | None = [None] * num_queues
> +            queue_on: list[str | None] | None =
> ["TX_OFFLOAD_MBUF_FAST_FREE"] * num_queues
> +
> +            testpmd.set_ports_queues(num_queues)
> +            testpmd.start_all_ports()
> +
> +            # Ensure mbuf_fast_free is disabled by default on port and
> queues
> +            self.verify(
> +                self._check_config(testpmd, None, "tx", port_id,
> queue_off, verify=verify),
> +                "MBUF_FAST_FREE enabled on queue start.",
> +            )
> +            # Enable mbuf_fast_free per queue and verify
> +            self._set_all_queues_mbuf_fast_free(testpmd, True, port_id,
> num_queues, verify)
> +            self.verify(
> +                self._check_config(testpmd, None, "tx", port_id,
> queue_on, verify),
> +                "Failed to enable MBUF_FAST_FREE on all queues.",
> +            )
> +            # Disable mbuf_fast_free per queue and verify
> +            self._set_all_queues_mbuf_fast_free(testpmd, False, port_id,
> num_queues, verify)
> +            self.verify(
> +                self._check_config(testpmd, None, "tx", port_id,
> queue_off, verify),
> +                "Failed to disable MBUF_FAST_FREE on all queues.",
> +            )
> --
> 2.50.1
>
>
Let's look at the testcases themselves together tomorrow or Friday. Thanks
Andrew.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mails.dpdk.org/archives/dev/attachments/20250924/687e5b08/attachment-0001.htm>