def min_tx_rate_support():
device_mappings = helpers.parse_mappings(
cfg.CONF.SRIOV_NIC.physical_device_mappings, unique_keys=False)
devices_to_test = set()
for devices_in_physnet in device_mappings.values():
for device in devices_in_physnet:
devices_to_test.add(device)
# NOTE(ralonsoh): the VF used by default is 0. Each SR-IOV configured
# NIC should have configured at least 1 VF.
VF_NUM = 0
devices_without_support = set()
for device in devices_to_test:
try:
ip_link = ip_lib.IpLinkCommand(device)
# NOTE(ralonsoh): to set min_tx_rate, first is needed to set
# max_tx_rate and max_tx_rate >= min_tx_rate.
vf_config = {'vf': VF_NUM, 'rate': {'min_tx_rate': int(400),
'max_tx_rate': int(500)}}
ip_link.set_vf_feature(vf_config)
vf_config = {'vf': VF_NUM, 'rate': {'min_tx_rate': 0,
'max_tx_rate': 0}}
ip_link.set_vf_feature(vf_config)
except ip_lib.InvalidArgument:
devices_without_support.add(device)
if devices_without_support:
LOG.debug('The following NICs do not support "min_tx_rate": %s',
devices_without_support)
return False
return True
def setUp(self):
super(TestIpLinkCommand, self).setUp()
self.parent._run.return_value = LINK_SAMPLE[1]
self.command = 'link'
self.link_cmd = ip_lib.IpLinkCommand(self.parent)
