diff options
Diffstat (limited to 'smoketest')
| -rwxr-xr-x | smoketest/scripts/cli/test_interfaces_ethernet.py | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/smoketest/scripts/cli/test_interfaces_ethernet.py b/smoketest/scripts/cli/test_interfaces_ethernet.py index d5dcdc536..2d0a4827d 100755 --- a/smoketest/scripts/cli/test_interfaces_ethernet.py +++ b/smoketest/scripts/cli/test_interfaces_ethernet.py @@ -99,6 +99,31 @@ class EthernetInterfaceTest(BasicInterfaceTest.BaseTest): flags = f.read() self.assertEqual(int(flags, 16) & 1, 0) + def test_offloading_rps(self): + # enable RPS on all available CPUs, RPS works woth a CPU bitmask, + # where each bit represents a CPU (core/thread). The formula below + # expands to rps_cpus = 255 for a 8 core system + rps_cpus = (1 << os.cpu_count()) -1 + + # XXX: we should probably reserve one core when the system is under + # high preasure so we can still have a core left for housekeeping. + # This is done by masking out the lowst bit so CPU0 is spared from + # receive packet steering. + rps_cpus &= ~1 + + for interface in self._interfaces: + self.session.set(self._base_path + [interface, 'offload', 'rps']) + + self.session.commit() + + for interface in self._interfaces: + cpus = read_file('/sys/class/net/eth1/queues/rx-0/rps_cpus') + # remove the nasty ',' separation on larger strings + cpus = cpus.replace(',','') + cpus = int(cpus, 16) + + self.assertEqual(f'{cpus:x}', f'{rps_cpus:x}') + def test_eapol_support(self): for interface in self._interfaces: |