def set_device_rate(self, pci_slot, rate_type, rate_kbps):
"""Set device rate: rate (max_tx_rate), min_tx_rate
@param pci_slot: Virtual Function address
@param rate_type: device rate name type. Could be 'rate' and
'min_tx_rate'.
@param rate_kbps: device rate in kbps
"""
vf_index = self._get_vf_index(pci_slot)
#NOTE(ralonsoh): ip link sets rate in Mbps therefore we need to convert
#the rate_kbps value from kbps to Mbps.
#Zero means to disable the rate so the lowest rate available is 1Mbps.
#Floating numbers are not allowed
if rate_kbps > 0 and rate_kbps < 1000:
rate_mbps = 1
else:
rate_mbps = helpers.round_val(rate_kbps / 1000.0)
log_dict = {
'rate_mbps': rate_mbps,
'rate_kbps': rate_kbps,
'vf_index': vf_index,
'rate_type': rate_type
}
if rate_kbps % 1000 != 0:
LOG.debug(
"'%(rate_type)s' for SR-IOV ports is counted in Mbps; "
"setting %(rate_mbps)s Mbps limit for port %(vf_index)s "
"instead of %(rate_kbps)s kbps", log_dict)
else:
LOG.debug("Setting %(rate_mbps)s Mbps limit for port %(vf_index)s",
log_dict)
return self.pci_dev_wrapper.set_vf_rate(vf_index, rate_type, rate_mbps)
def set_device_rate(self, pci_slot, rate_type, rate_kbps):
"""Set device rate: rate (max_tx_rate), min_tx_rate
@param pci_slot: Virtual Function address
@param rate_type: device rate name type. Could be 'rate' and
'min_tx_rate'.
@param rate_kbps: device rate in kbps
"""
vf_index = self._get_vf_index(pci_slot)
# NOTE(ralonsoh): ip link sets rate in Mbps therefore we need to convert
# the rate_kbps value from kbps to Mbps.
# Zero means to disable the rate so the lowest rate available is 1Mbps.
# Floating numbers are not allowed
if rate_kbps > 0 and rate_kbps < 1000:
rate_mbps = 1
else:
rate_mbps = helpers.round_val(rate_kbps / 1000.0)
log_dict = {"rate_mbps": rate_mbps, "rate_kbps": rate_kbps, "vf_index": vf_index, "rate_type": rate_type}
if rate_kbps % 1000 != 0:
LOG.debug(
"'%(rate_type)s' for SR-IOV ports is counted in Mbps; "
"setting %(rate_mbps)s Mbps limit for port %(vf_index)s "
"instead of %(rate_kbps)s kbps",
log_dict,
)
else:
LOG.debug("Setting %(rate_mbps)s Mbps limit for port %(vf_index)s", log_dict)
return self.pci_dev_wrapper.set_vf_rate(vf_index, rate_type, rate_mbps)
def test_round_val_ok(self):
for expected, value in ((0, 0),
(0, 0.1),
(1, 0.5),
(1, 1.49),
(2, 1.5)):
self.assertEqual(expected, helpers.round_val(value))
def set_device_rate(self, pci_slot, rates):
"""Set device rate: max_tx_rate, min_tx_rate
@param pci_slot: Virtual Function address
@param rates: dictionary with rate type (str) and the value (int)
in Kbps. Example:
{'max_tx_rate': 20000, 'min_tx_rate': 10000}
{'max_tx_rate': 30000}
{'min_tx_rate': 5000}
"""
vf_index = self._get_vf_index(pci_slot)
# NOTE(ralonsoh): ip link sets rate in Mbps therefore we need to
# convert the rate_kbps value from kbps to Mbps.
# Zero means to disable the rate so the lowest rate available is 1Mbps.
# Floating numbers are not allowed
rates_mbps = {}
for rate_type, rate_kbps in rates.items():
if 0 < rate_kbps < 1000:
rate_mbps = 1
else:
rate_mbps = helpers.round_val(rate_kbps / 1000.0)
rates_mbps[rate_type] = rate_mbps
missing_rate_types = set(IP_LINK_CAPABILITY_RATES) - rates.keys()
if missing_rate_types:
# A key is missing. As explained in LP#1962844, in order not to
# delete an existing rate ('max_tx_rate', 'min_tx_rate'), it is
# needed to read the current VF rates and set the same value again.
vf = self._get_vfs()[int(vf_index)]
# Devices without 'min_tx_rate' support will return None in this
# value. If current value is 0, there is no need to set it again.
for _type in (_type for _type in missing_rate_types if vf[_type]):
rates_mbps[_type] = vf[_type]
LOG.debug('Setting %s limits (in Mbps) for port VF %s', rates_mbps,
vf_index)
return self.pci_dev_wrapper.set_vf_rate(vf_index, rates_mbps)
def round_val(val):
return helpers.round_val(val)
def test_round_val_ok(self):
for expected, value in ((0, 0), (0, 0.1), (1, 0.5), (1, 1.49), (2,
1.5)):
self.assertEqual(expected, helpers.round_val(value))
def round_val(val):
return helpers.round_val(val)
