[PATCH v3 4/7] dts: allow passing parameters into interactive apps

[jspewock@iol.unh.edu]

From: Jeremy Spewock <jspewock@iol.unh.edu>

Modified interactive applications to allow for the ability to pass
parameters into the app on start up. Also modified the way EAL
parameters are handled so that the trailing "--" separator is added be
default after all EAL parameters.

Signed-off-by: Jeremy Spewock <jspewock@iol.unh.edu>
---
 dts/framework/remote_session/remote/testpmd_shell.py |  2 +-
 dts/framework/testbed_model/sut_node.py              | 11 +++++++----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/dts/framework/remote_session/remote/testpmd_shell.py b/dts/framework/remote_session/remote/testpmd_shell.py
index 3ea16c7ab3..3f6a86aa35 100644
--- a/dts/framework/remote_session/remote/testpmd_shell.py
+++ b/dts/framework/remote_session/remote/testpmd_shell.py
@@ -32,7 +32,7 @@ def _start_application(
         self, get_privileged_command: Callable[[str], str] | None
     ) -> None:
         """See "_start_application" in InteractiveShell."""
-        self._app_args += " -- -i"
+        self._app_args += " -i"
         super()._start_application(get_privileged_command)
 
     def get_devices(self) -> list[TestPmdDevice]:
diff --git a/dts/framework/testbed_model/sut_node.py b/dts/framework/testbed_model/sut_node.py
index 4161d3a4d5..bcac939e72 100644
--- a/dts/framework/testbed_model/sut_node.py
+++ b/dts/framework/testbed_model/sut_node.py
@@ -377,7 +377,8 @@ def create_interactive_shell(
         shell_cls: Type[InteractiveShellType],
         timeout: float = SETTINGS.timeout,
         privileged: bool = False,
-        eal_parameters: EalParameters | str | None = None,
+        eal_parameters: EalParameters | str = "",
+        app_parameters: str = "",
     ) -> InteractiveShellType:
         """Factory method for creating a handler for an interactive session.
 
@@ -392,12 +393,14 @@ 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
                 create_eal_parameters().
+            app_parameters: Additional arguments to pass into the application on the
+                command-line.
         Returns:
             Instance of the desired interactive application.
         """
-        if not eal_parameters:
+        if not eal_parameters and shell_cls.dpdk_app:
             eal_parameters = self.create_eal_parameters()
-
+            eal_parameters = f"{eal_parameters} --"
         # We need to append the build directory for DPDK apps
         if shell_cls.dpdk_app:
             shell_cls.path = self.main_session.join_remote_path(
@@ -405,7 +408,7 @@ def create_interactive_shell(
             )
 
         return super().create_interactive_shell(
-            shell_cls, timeout, privileged, str(eal_parameters)
+            shell_cls, timeout, privileged, f"{eal_parameters} {app_parameters}"
         )
 
     def bind_ports_to_driver(self, for_dpdk: bool = True) -> None:
-- 
2.42.0