[PATCH v7 2/2] dts: add flow create/delete to testpmd shell

[Dean Marx]

Add flow create/delete methods to TestPmdShell class
for initializing flow rules.

Signed-off-by: Dean Marx <dmarx at iol.unh.edu>
---
 dts/framework/remote_session/testpmd_shell.py | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/dts/framework/remote_session/testpmd_shell.py b/dts/framework/remote_session/testpmd_shell.py
index 3e86f52a7e..d58e4891b0 100644
--- a/dts/framework/remote_session/testpmd_shell.py
+++ b/dts/framework/remote_session/testpmd_shell.py
@@ -1910,6 +1910,51 @@ def csum_set_hw(
                                                            {port_id}:\n{csum_output}"""
                     )
 
+    def flow_create(self, flow_rule: FlowRule, port_id: int) -> int:
+        """Creates a flow rule in the testpmd session.
+
+        Args:
+            flow_rule: :class:`FlowRule` object used for creating testpmd flow rule.
+            port_id: Integer representing the port to use.
+            verify: If :data:`True`, the output of the command is scanned
+                to ensure the flow rule was created successfully.
+
+        Raises:
+            InteractiveCommandExecutionError: If flow rule is invalid.
+
+        Returns:
+            Id of created flow rule. Acts as implicit verification.
+        """
+        flow_output = self.send_command(f"flow create {port_id} {flow_rule}")
+        match = re.search(r"#(\d+)", flow_output)
+        if match is not None:
+            match_str = match.group(1)
+            flow_id = int(match_str)
+            return flow_id
+        else:
+            self._logger.debug(f"Failed to create flow rule:\n{flow_output}")
+            raise InteractiveCommandExecutionError(f"Failed to create flow rule:\n{flow_output}")
+
+    def flow_delete(self, flow_id: int, port_id: int, verify: bool = True) -> None:
+        """Deletes the specified flow rule from the testpmd session.
+
+        Args:
+            flow_id: ID of the flow to remove.
+            port_id: Integer representing the port to use.
+            verify: If :data:`True`, the output of the command is scanned
+                to ensure the flow rule was deleted successfully.
+
+        Raises:
+            InteractiveCommandExecutionError: If flow rule is invalid.
+        """
+        flow_output = self.send_command(f"flow destroy {port_id} rule {flow_id}")
+        if verify:
+            if "destroyed" not in flow_output:
+                self._logger.debug(f"Failed to delete flow rule:\n{flow_output}")
+                raise InteractiveCommandExecutionError(
+                    f"Failed to delete flow rule:\n{flow_output}"
+                )
+
     @requires_started_ports
     @requires_stopped_ports
     def set_port_mtu(self, port_id: int, mtu: int, verify: bool = True) -> None:
-- 
2.47.0