This suite tests the ability of the Poll Mode Driver
to enable and disable Rx/Tx queues on a port.
The verify argument in the deferred start method has been excluded
due to a bug in testpmd, which renders checking port queue info
for deferred start status impossible within a single method.
Signed-off-by: Dean Marx <dm...@iol.unh.edu>
Reviewed-by: Jeremy Spewock <jspew...@iol.unh.edu>
---
dts/framework/remote_session/testpmd_shell.py | 18 +++
dts/tests/TestSuite_queue_start_stop.py | 135 ++++++++++++++++++
2 files changed, 153 insertions(+)
create mode 100644 dts/tests/TestSuite_queue_start_stop.py
diff --git a/dts/framework/remote_session/testpmd_shell.py
b/dts/framework/remote_session/testpmd_shell.py
index aa55bd91d3..a90c5ff7a8 100644
--- a/dts/framework/remote_session/testpmd_shell.py
+++ b/dts/framework/remote_session/testpmd_shell.py
@@ -2248,6 +2248,24 @@ def set_queue_ring_size(
f"Failed to update ring size of queue {queue_id} on port
{port_id}"
)
+ @requires_stopped_ports
+ def set_queue_deferred_start(
+ self, port_id: int, queue_id: int, is_rx_queue: bool, on: bool
+ ) -> None:
+ """Set the deferred start attribute of the specified queue on/off.
+
+ Args:
+ port_id: The port that the queue resides on.
+ queue_id: The ID of the queue on the port.
+ is_rx_queue: Whether to modify an RX or TX queue. If :data:`True`
an RX queue will be
+ updated, otherwise a TX queue will be updated.
+ on: Whether to set deferred start mode on or off. If :data:`True`
deferred start will
+ be turned on, otherwise it will be turned off.
+ """
+ queue_type = "rxq" if is_rx_queue else "txq"
+ action = "on" if on else "off"
+ self.send_command(f"port {port_id} {queue_type} {queue_id}
deferred_start {action}")
+
def _update_capabilities_from_flag(
self,
supported_capabilities: MutableSet["NicCapability"],
diff --git a/dts/tests/TestSuite_queue_start_stop.py
b/dts/tests/TestSuite_queue_start_stop.py
new file mode 100644
index 0000000000..954e274c93
--- /dev/null
+++ b/dts/tests/TestSuite_queue_start_stop.py
@@ -0,0 +1,135 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2024 University of New Hampshire
+
+"""Rx/Tx queue start and stop functionality suite.
+
+This suite tests the ability of the poll mode driver to start and
+stop either the Rx or Tx queue (depending on the port) during runtime,
+and verify that packets are not received when one is disabled.
+
+Given a paired port topology, the Rx queue will be disabled on port 0,
+and the Tx queue will be disabled on port 1.
+
+"""
+
+from scapy.layers.inet import IP
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+
+from framework.remote_session.testpmd_shell import SimpleForwardingModes,
TestPmdShell
+from framework.test_suite import TestSuite, func_test
+from framework.testbed_model.capability import NicCapability, TopologyType,
requires
+
+
+@requires(topology_type=TopologyType.two_links)
+@requires(NicCapability.RUNTIME_RX_QUEUE_SETUP)
+@requires(NicCapability.RUNTIME_TX_QUEUE_SETUP)
+class TestQueueStartStop(TestSuite):
+ """DPDK Queue start/stop test suite.
+
+ Ensures Rx/Tx queue on a port can be disabled and enabled.
+ Verifies packets are not received when either queue is disabled.
+ The suite contains four test cases, two Rx queue start/stop and
+ two Tx queue start/stop, which each disable the corresponding
+ queue and verify that packets are not received/forwarded. There
+ are two cases that verify deferred start mode produces the expected
+ behavior in both the Rx and Tx queue.
+ """
+
+ def send_packet_and_verify(self, should_receive: bool = True) -> None:
+ """Generate a packet, send to the DUT, and verify it is forwarded back.
+
+ Args:
+ should_receive: Indicate whether the packet should be received.
+ """
+ packet = Ether() / IP() / Raw(load="xxxxx")
+ received = self.send_packet_and_capture(packet)
+ contains_packet = any(
+ packet.haslayer(Raw) and b"xxxxx" in packet.load for packet in
received
+ )
+ self.verify(
+ should_receive == contains_packet,
+ f"Packet was {'dropped' if should_receive else 'received'}",
+ )
+
+ @func_test
+ def test_rx_queue_start_stop(self) -> None:
+ """Rx queue start stop test.
+
+ Steps:
+ Launch testpmd, stop Rx queue 0 on port 0.
+ Verify:
+ Send a packet on port 0, ensure it is not received.
+ """
+ with TestPmdShell(node=self.sut_node) as testpmd:
+ testpmd.set_forward_mode(SimpleForwardingModes.mac)
+ testpmd.stop_port_queue(0, 0, True)
+ testpmd.start()
+ self.send_packet_and_verify(should_receive=False)
+ testpmd.stop()
+ testpmd.start_port_queue(0, 0, True)
+ testpmd.start()
+ self.send_packet_and_verify(should_receive=True)
+
+ @func_test
+ def test_tx_queue_start_stop(self) -> None:
+ """Tx queue start stop test.
+
+ Steps:
+ Launch testpmd, stop Tx queue 0 on port 0.
+ Verify:
+ Send a packet on port 0, ensure it is not forwarded.
+ """
+ with TestPmdShell(node=self.sut_node) as testpmd:
+ testpmd.set_forward_mode(SimpleForwardingModes.mac)
+ testpmd.stop_port_queue(1, 0, False)
+ testpmd.start()
+ self.send_packet_and_verify(should_receive=False)
+ testpmd.stop()
+ testpmd.start_port_queue(1, 0, False)
+ testpmd.start()
+ self.send_packet_and_verify(should_receive=True)
+
+ @func_test
+ def test_rx_queue_deferred_start(self) -> None:
+ """Rx queue deferred start stop test.
+
+ Steps:
+ Launch testpmd, enable deferred start on Rx queue 0 port 0.
+ Stop Rx queue 0 on port 0.
+ Verify:
+ Send a packet on port 0, ensure it is not received.
+ """
+ with TestPmdShell(node=self.sut_node) as testpmd:
+ testpmd.set_forward_mode(SimpleForwardingModes.mac)
+ testpmd.stop_all_ports()
+ testpmd.set_queue_deferred_start(0, 0, True, True)
+ testpmd.start_all_ports()
+ testpmd.start()
+ self.send_packet_and_verify(should_receive=False)
+ testpmd.stop()
+ testpmd.start_port_queue(0, 0, True)
+ testpmd.start()
+ self.send_packet_and_verify(should_receive=True)
+
+ @func_test
+ def test_tx_queue_deferred_start(self) -> None:
+ """Tx queue start stop test.
+
+ Steps:
+ Launch testpmd, enable deferred start on Tx queue 0 port 0.
+ Stop Tx queue 0 on port 0.
+ Verify:
+ Send a packet on port 0, ensure it is not forwarded.
+ """
+ with TestPmdShell(node=self.sut_node) as testpmd:
+ testpmd.set_forward_mode(SimpleForwardingModes.mac)
+ testpmd.stop_all_ports()
+ testpmd.set_queue_deferred_start(1, 0, False, True)
+ testpmd.start_all_ports()
+ testpmd.start()
+ self.send_packet_and_verify(should_receive=False)
+ testpmd.stop()
+ testpmd.start_port_queue(1, 0, False)
+ testpmd.start()
+ self.send_packet_and_verify(should_receive=True)
--
2.44.0
