Currently, this script sets up the test scenario, which is supposed to end in an inability of the system to negotiate a link. It then waits for a bit, and verifies that the system can diagnose why the link was not established.

The wait time for the scenario where different link speeds are forced on the two ends of a loopback cable, was set to 4 seconds, which exactly covered it. As of a recent mlxsw firmware update, this time gets longer, and this test starts failing.

The time that selftests currently wait for links to be established is currently $WAIT_TIMEOUT, or 20 seconds. It seems reasonable that if this is the time necessary to establish and bring up a link, it should also be enough to determine that a link cannot be established and why.

Therefore in this patch, convert the sleeps to busywaits, so that if a failure is established sooner (as is expected), the test runs quicker. And use $WAIT_TIMEOUT as the time to wait.

Signed-off-by: Petr Machata petrm@nvidia.com Reviewed-by: Amit Cohen amcohen@nvidia.com --- .../net/forwarding/ethtool_extended_state.sh | 43 ++++++++++++------- 1 file changed, 28 insertions(+), 15 deletions(-)

diff --git a/tools/testing/selftests/net/forwarding/ethtool_extended_state.sh b/tools/testing/selftests/net/forwarding/ethtool_extended_state.sh index 4b42dfd4efd1..072faa77f53b 100755 --- a/tools/testing/selftests/net/forwarding/ethtool_extended_state.sh +++ b/tools/testing/selftests/net/forwarding/ethtool_extended_state.sh @@ -11,6 +11,8 @@ NUM_NETIFS=2 source lib.sh source ethtool_lib.sh

+TIMEOUT=$((WAIT_TIMEOUT * 1000)) # ms + setup_prepare() { swp1=${NETIFS[p1]} @@ -18,7 +20,7 @@ setup_prepare() swp3=$NETIF_NO_CABLE }

-ethtool_extended_state_check() +ethtool_ext_state() { local dev=$1; shift local expected_ext_state=$1; shift @@ -30,21 +32,27 @@ ethtool_extended_state_check() | sed -e 's/^[[:space:]]*//') ext_state=$(echo $ext_state | cut -d "," -f1)

- [[ $ext_state == $expected_ext_state ]] - check_err $? "Expected "$expected_ext_state", got "$ext_state"" - - [[ $ext_substate == $expected_ext_substate ]] - check_err $? "Expected "$expected_ext_substate", got "$ext_substate"" + if [[ $ext_state != $expected_ext_state ]]; then + echo "Expected "$expected_ext_state", got "$ext_state"" + return 1 + fi + if [[ $ext_substate != $expected_ext_substate ]]; then + echo "Expected "$expected_ext_substate", got "$ext_substate"" + return 1 + fi }

autoneg() { + local msg + RET=0

ip link set dev $swp1 up

- sleep 4 - ethtool_extended_state_check $swp1 "Autoneg" "No partner detected" + msg=$(busywait $TIMEOUT ethtool_ext_state $swp1 \ + "Autoneg" "No partner detected") + check_err $? "$msg"

log_test "Autoneg, No partner detected"

@@ -53,6 +61,8 @@ autoneg()

autoneg_force_mode() { + local msg + RET=0

ip link set dev $swp1 up @@ -65,12 +75,13 @@ autoneg_force_mode() ethtool_set $swp1 speed $speed1 autoneg off ethtool_set $swp2 speed $speed2 autoneg off

- sleep 4 - ethtool_extended_state_check $swp1 "Autoneg" \ - "No partner detected during force mode" + msg=$(busywait $TIMEOUT ethtool_ext_state $swp1 \ + "Autoneg" "No partner detected during force mode") + check_err $? "$msg"

- ethtool_extended_state_check $swp2 "Autoneg" \ - "No partner detected during force mode" + msg=$(busywait $TIMEOUT ethtool_ext_state $swp2 \ + "Autoneg" "No partner detected during force mode") + check_err $? "$msg"

log_test "Autoneg, No partner detected during force mode"

@@ -83,12 +94,14 @@ autoneg_force_mode()

no_cable() { + local msg + RET=0

ip link set dev $swp3 up

- sleep 1 - ethtool_extended_state_check $swp3 "No cable" + msg=$(busywait $TIMEOUT ethtool_ext_state $swp3 "No cable") + check_err $? "$msg"

log_test "No cable"