Re: [PATCH v6 2/7] dts: limit EAL parameters to DPDK apps and add parameters to all apps

["Juraj Linkeš" <juraj.linkes@pantheon.tech>]

On Wed, Jan 3, 2024 at 11:33 PM <jspewock@iol.unh.edu> wrote:
>
> From: Jeremy Spewock <jspewock@iol.unh.edu>
>
> Changed the factory method for creating interactive apps in the SUT Node
> so that EAL parameters would only be passed into DPDK apps since
> non-DPDK apps wouldn't be able to process them. Also modified
> interactive apps to allow for the ability to pass parameters into the
> app on startup so that the applications can be started with certain
> configuration steps passed on the command line.
>
> Signed-off-by: Jeremy Spewock <jspewock@iol.unh.edu>
> ---
>
> I ended up reverting part of this back to making the argument for
> eal_parameters allowed to be a string. This was because it was casuing
> mypy errors where the method signatures of sut_node did not match with
> that of node.
>

This is because the signatures don't actually match :-)

The eal_parameters parameter is added on not top of what's in the base
methods. I suggest we move eal_parameters to the end and then we don't
need to allow str for eal_parameters.

>  dts/framework/remote_session/testpmd_shell.py |  2 +-
>  dts/framework/testbed_model/sut_node.py       | 14 +++++++++-----
>  2 files changed, 10 insertions(+), 6 deletions(-)
>
> diff --git a/dts/framework/remote_session/testpmd_shell.py b/dts/framework/remote_session/testpmd_shell.py
> index f310705fac..8f40e8f40e 100644
> --- a/dts/framework/remote_session/testpmd_shell.py
> +++ b/dts/framework/remote_session/testpmd_shell.py
> @@ -118,7 +118,7 @@ def _start_application(self, get_privileged_command: Callable[[str], str] | None
>          Also find the number of pci addresses which were allowed on the command line when the app
>          was started.
>          """
> -        self._app_args += " -- -i --mask-event intr_lsc"
> +        self._app_args += " -i --mask-event intr_lsc"
>          self.number_of_ports = self._app_args.count("-a ")
>          super()._start_application(get_privileged_command)
>
> diff --git a/dts/framework/testbed_model/sut_node.py b/dts/framework/testbed_model/sut_node.py
> index c4acea38d1..4df18bc183 100644
> --- a/dts/framework/testbed_model/sut_node.py
> +++ b/dts/framework/testbed_model/sut_node.py
> @@ -431,6 +431,7 @@ def create_interactive_shell(
>          timeout: float = SETTINGS.timeout,
>          privileged: bool = False,
>          eal_parameters: EalParameters | str | None = None,
> +        app_parameters: str = "",

What I meant above is we should move app_parameters before
eal_parameters and then we can remove the str type of eal_parameters.

>      ) -> InteractiveShellType:
>          """Extend the factory for interactive session handlers.
>
> @@ -449,20 +450,23 @@ def create_interactive_shell(
>              eal_parameters: List of EAL parameters to use to launch the app. If this
>                  isn't provided or an empty string is passed, it will default to calling
>                  :meth:`create_eal_parameters`.
> +            app_parameters: Additional arguments to pass into the application on the
> +                command-line.
>
>          Returns:
>              An instance of the desired interactive application shell.
>          """
> -        if not eal_parameters:
> -            eal_parameters = self.create_eal_parameters()
> -
> -        # We need to append the build directory for DPDK apps
> +        # We need to append the build directory and add EAL parameters for DPDK apps
>          if shell_cls.dpdk_app:
> +            if not eal_parameters:
> +                eal_parameters = self.create_eal_parameters()
> +            app_parameters = f"{eal_parameters} -- {app_parameters}"
> +
>              shell_cls.path = self.main_session.join_remote_path(
>                  self.remote_dpdk_build_dir, shell_cls.path
>              )
>
> -        return super().create_interactive_shell(shell_cls, timeout, privileged, str(eal_parameters))
> +        return super().create_interactive_shell(shell_cls, timeout, privileged, app_parameters)
>
>      def bind_ports_to_driver(self, for_dpdk: bool = True) -> None:
>          """Bind all ports on the SUT to a driver.
> --
> 2.43.0
>