[PATCH v1] dts: clean cryptodev environment after a test run

[Andrew Bailey <abailey@iol.unh.edu>]

Prior to this patch, the virtual functions created by DTS for crypto
devices were not properly cleanedu up. This could lead to a system to be
left in a bad state after running the cryptodev throughput test suite.
This patch properly cleans up the environment after cryptodev testing.

Bugzilla ID: 1923
Fixes: 8ee2df9da125 ("dts: add cryptodev package")

Signed-off-by: Andrew Bailey <abailey@iol.unh.edu>
---
 dts/framework/testbed_model/linux_session.py | 28 +++++++++++++++++++-
 dts/framework/testbed_model/os_session.py    |  8 ++++++
 2 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/dts/framework/testbed_model/linux_session.py b/dts/framework/testbed_model/linux_session.py
index ee943462c2..a5bb34b4e8 100644
--- a/dts/framework/testbed_model/linux_session.py
+++ b/dts/framework/testbed_model/linux_session.py
@@ -181,6 +181,21 @@ def get_port_info(self, pci_address: str) -> PortInfo:
 
         return PortInfo(mac_address, logical_name, driver, is_link_up)
 
+    def unbind_ports(self, ports):
+        """Overrides :meth:`~.os_session.OSSession.unbind_ports`.
+
+        The :attr:`~.devbind_script_path` property must be setup in order to call this method.
+        """
+        ports_pci_addrs = " ".join(port.pci for port in ports)
+
+        self.send_command(
+            f"{self.devbind_script_path} -u --force {ports_pci_addrs}",
+            privileged=True,
+            verify=True,
+        )
+
+        del self._lshw_net_info
+
     def bind_ports_to_driver(self, ports: list[Port], driver_name: str) -> None:
         """Overrides :meth:`~.os_session.OSSession.bind_ports_to_driver`.
 
@@ -289,7 +304,18 @@ def create_vfs(self, pf_port: Port) -> None:
             self.refresh_lshw()
 
     def delete_crypto_vfs(self, pf_port: Port) -> None:
-        """Overrides :meth:`~.os_session.OSSession.delete_crypto_vfs`."""
+        """Overrides :meth:`~.os_session.OSSession.delete_crypto_vfs`.
+
+        The :attr:`~.devbind_script_path` property must be setup in order to call this method.
+        """
+        if vfs := self.get_pci_addr_of_crypto_vfs(pf_port):
+            vf_pci_addrs = " ".join(vf for vf in vfs)
+            self.send_command(
+                f"{self.devbind_script_path} -u --force {vf_pci_addrs}",
+                privileged=True,
+                verify=True,
+            )
+        self.unbind_ports([pf_port])
         self.send_command(
             f"echo 1 | sudo tee /sys/bus/pci/devices/{pf_port.pci}/remove".replace(":", "\\:"),
             privileged=True,
diff --git a/dts/framework/testbed_model/os_session.py b/dts/framework/testbed_model/os_session.py
index 2c267afed1..f2dc9b20a9 100644
--- a/dts/framework/testbed_model/os_session.py
+++ b/dts/framework/testbed_model/os_session.py
@@ -573,6 +573,14 @@ def get_port_info(self, pci_address: str) -> PortInfo:
             ConfigurationError: If the port could not be found.
         """
 
+    @abstractmethod
+    def unbind_ports(self, ports: list[Port]) -> None:
+        """Unbind `ports` from any driver.
+
+        Args:
+            ports: The list of ports to unbind.
+        """
+
     @abstractmethod
     def bind_ports_to_driver(self, ports: list[Port], driver_name: str) -> None:
         """Bind `ports` to the given `driver_name`.
-- 
2.50.1