def get_pci_device_by_id(self, id):
try:
filters = {'id': id}
pcis = self.list_pci_devices(filters=filters)
except etcd.EtcdKeyNotFound:
raise exception.PciDeviceNotFoundById(id=id)
except Exception as e:
LOG.error('Error occurred while retrieving pci device: %s',
six.text_type(e))
raise
if len(pcis) == 0:
raise exception.PciDeviceNotFoundById(id=id)
return pcis
def test_wrong_mac(self):
self.mock_get_mac.side_effect = (
exception.PciDeviceNotFoundById(self.pci_address))
net_name = utils.get_net_name_by_vf_pci_address(self.pci_address)
self.assertIsNone(net_name)
self.mock_get_mac.called_once_with(self.pci_address)
self.mock_get_ifname.assert_not_called()
def get_pci_device_by_id(self, id):
pci_dev_ref = model_query(models.PciDevice).\
filter_by(id=id).\
first()
if not pci_dev_ref:
raise exception.PciDeviceNotFoundById(id=id)
return pci_dev_ref
def get_ifname_by_pci_address(pci_addr, pf_interface=False):
"""Get the interface name based on a VF's pci address
The returned interface name is either the parent PF's or that of the VF
itself based on the argument of pf_interface.
"""
dev_path = _get_sysfs_netdev_path(pci_addr, pf_interface)
try:
dev_info = os.listdir(dev_path)
return dev_info.pop()
except Exception:
raise exception.PciDeviceNotFoundById(id=pci_addr)
def get_vf_num_by_pci_address(pci_addr):
"""Get the VF number based on a VF's pci address
A VF is associated with an VF number, which ip link command uses to
configure it. This number can be obtained from the PCI device filesystem.
"""
VIRTFN_RE = re.compile("virtfn(\d+)")
virtfns_path = "/sys/bus/pci/devices/%s/physfn/virtfn*" % (pci_addr)
vf_num = None
try:
for vf_path in glob.iglob(virtfns_path):
if re.search(pci_addr, os.readlink(vf_path)):
t = VIRTFN_RE.search(vf_path)
vf_num = t.group(1)
break
except Exception:
pass
if vf_num is None:
raise exception.PciDeviceNotFoundById(id=pci_addr)
return vf_num
def get_mac_by_pci_address(pci_addr, pf_interface=False):
"""Get the MAC address of the nic based on it's PCI address
Raises PciDeviceNotFoundById in case the pci device is not a NIC
"""
dev_path = _get_sysfs_netdev_path(pci_addr, pf_interface)
if_name = get_ifname_by_pci_address(pci_addr, pf_interface)
addr_file = os.path.join(dev_path, if_name, 'address')
try:
with open(addr_file) as f:
mac = next(f).strip()
return mac
except (IOError, StopIteration) as e:
LOG.warning(
"Could not find the expected sysfs file for "
"determining the MAC address of the PCI device "
"%(addr)s. May not be a NIC. Error: %(e)s", {
'addr': pci_addr,
'e': e
})
raise exception.PciDeviceNotFoundById(id=pci_addr)