Mohan Prasad J wrote:
> 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 <mohan.prasad@xxxxxxxxxxxxx>
> ---
> .../drivers/net/hw/nic_basic_tests.py | 46 +++++++++++++++++++
> 1 file changed, 46 insertions(+)
>
> diff --git a/tools/testing/selftests/drivers/net/hw/nic_basic_tests.py b/tools/testing/selftests/drivers/net/hw/nic_basic_tests.py
> index 27f780032..ff46f2406 100644
> --- a/tools/testing/selftests/drivers/net/hw/nic_basic_tests.py
> +++ b/tools/testing/selftests/drivers/net/hw/nic_basic_tests.py
> @@ -42,6 +42,14 @@ from lib.py import ethtool
> """Global variables"""
> common_link_modes = []
>
> +def check_autonegotiation(ifname: str) -> None:
> + autoneg = get_ethtool_content(ifname, "Supports auto-negotiation:")
> + partner_autoneg = get_ethtool_content(ifname, "Link partner advertised auto-negotiation:")
> +
> + """Check if auto-neg supported by local and partner NIC"""
> + if autoneg[0] != "Yes" or partner_autoneg[0] != "Yes":
> + raise KsftSkipEx(f"Interface {ifname} or partner does not support auto-negotiation")
> +
> def get_ethtool_content(ifname: str, field: str):
> capture = False
> content = []
> @@ -112,6 +120,25 @@ def verify_autonegotiation(ifname: str, expected_state: str) -> None:
>
> ksft_eq(actual_state, expected_state)
>
> +def set_speed_and_duplex(ifname: str, speed: str, duplex: str) -> None:
> + """Set the speed and duplex state for the interface"""
> + process = ethtool(f"--change {ifname} speed {speed} duplex {duplex} autoneg on")
> +
> + if process.ret != 0:
> + raise KsftFailEx(f"Not able to set speed and duplex parameters for {ifname}")
> + ksft_pr(f"Speed: {speed} Mbps, Duplex: {duplex} set for Interface: {ifname}")
> +
> +def verify_speed_and_duplex(ifname: str, expected_speed: str, expected_duplex: str) -> None:
> + verify_link_up(ifname)
> + """Verifying the speed and duplex state for the interface"""
> + with open(f"/sys/class/net/{ifname}/speed", "r") as fp:
> + actual_speed = fp.read().strip()
> + with open(f"/sys/class/net/{ifname}/duplex", "r") as fp:
> + actual_duplex = fp.read().strip()
> +
> + ksft_eq(actual_speed, expected_speed)
> + ksft_eq(actual_duplex, expected_duplex)
> +
> def test_link_modes(cfg) -> None:
> global common_link_modes
> link_modes = get_ethtool_content(cfg.ifname, "Supported link modes:")
> @@ -136,6 +163,25 @@ def test_autonegotiation(cfg) -> None:
> else:
> raise KsftSkipEx(f"Auto-Negotiation is not supported for interface {cfg.ifname}")
>
> +def test_network_speed(cfg) -> None:
> + check_autonegotiation(cfg.ifname)
> + if not common_link_modes:
> + KsftSkipEx("No common link modes exist")
> + speeds, duplex_modes = get_speed_duplex(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]
> + set_speed_and_duplex(cfg.ifname, speed, duplex)
> + time.sleep(sleep_time)
> + verify_speed_and_duplex(cfg.ifname, speed, duplex)
> + 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")
> +
Do these tests reset configuration to their original state?
More high level: basic test is not very descriptive. Can they have a
more precise name? Perhaps link layer operations or link layer config?
