Add selftest case for testing the speed and duplex state of
local NIC driver and the partner based on the supported
link modes obtained from the ethtool. Speed and duplex states
are varied and verified using ethtool.

Signed-off-by: Mohan Prasad J <[email protected]>
---
 .../drivers/net/hw/nic_link_layer.py          | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/tools/testing/selftests/drivers/net/hw/nic_link_layer.py 
b/tools/testing/selftests/drivers/net/hw/nic_link_layer.py
index d8cc12e84..efd921180 100644
--- a/tools/testing/selftests/drivers/net/hw/nic_link_layer.py
+++ b/tools/testing/selftests/drivers/net/hw/nic_link_layer.py
@@ -76,6 +76,28 @@ def test_autonegotiation(cfg: object, link_config: 
LinkConfig, time_delay: int)
         time.sleep(time_delay)
         verify_autonegotiation(cfg, state, link_config)
 
+def test_network_speed(cfg: object, link_config: LinkConfig, time_delay: int) 
-> None:
+    _pre_test_checks(cfg, link_config)
+    common_link_modes = link_config.common_link_modes
+    if not common_link_modes:
+        KsftSkipEx("No common link modes exist")
+    speeds, duplex_modes = 
link_config.get_speed_duplex_values(common_link_modes)
+
+    if speeds and duplex_modes and len(speeds) == len(duplex_modes):
+        for idx in range(len(speeds)):
+            speed = speeds[idx]
+            duplex = duplex_modes[idx]
+            if not link_config.set_speed_and_duplex(speed, duplex):
+                raise KsftFailEx(f"Unable to set speed and duplex parameters 
for {cfg.ifname}")
+            time.sleep(time_delay)
+            if not link_config.verify_speed_and_duplex(speed, duplex):
+                raise KsftSkipEx(f"Error occurred while verifying speed and 
duplex states for interface {cfg.ifname}")
+    else:
+        if not speeds or not duplex_modes:
+            KsftSkipEx(f"No supported speeds or duplex modes found for 
interface {cfg.ifname}")
+        else:
+            KsftSkipEx("Mismatch in the number of speeds and duplex modes")
+
 def main() -> None:
     parser = argparse.ArgumentParser(description="Run basic link layer tests 
for NIC driver")
     parser.add_argument('--time-delay', type=int, default=8, help='Time taken 
to wait for transitions to happen(in seconds). Default is 8 seconds.')
-- 
2.43.0


Reply via email to