def remove_outbound(device, vlan_tag):
"""Removes the qosOutbound configuration from the device and restores
pfifo_fast if it was the last QoSed network on the device. vlan_tag
can be None"""
class_id = '%x' % (_NON_VLANNED_ID if vlan_tag is None else vlan_tag)
MISSING_OBJ_ERR_CODES = (errno.EINVAL, errno.ENOENT, errno.EOPNOTSUPP)
try:
tc.filter.delete(
device, pref=_NON_VLANNED_ID if vlan_tag is None else vlan_tag)
except tc.TrafficControlException as tce:
if tce.errCode not in MISSING_OBJ_ERR_CODES: # No filter exists
raise
device_qdiscs = list(tc.qdiscs(device))
if not device_qdiscs:
return
root_qdisc_handle = netinfo_qos.get_root_qdisc(device_qdiscs)['handle']
try:
tc.cls.delete(device, classid=root_qdisc_handle + class_id)
except tc.TrafficControlException as tce:
if tce.errCode not in MISSING_OBJ_ERR_CODES: # No class exists
raise
if not _uses_classes(device, root_qdisc_handle=root_qdisc_handle):
try:
tc._qdisc_del(device)
tc._qdisc_del(device, kind='ingress')
except tc.TrafficControlException as tce:
if tce.errCode not in MISSING_OBJ_ERR_CODES: # No qdisc
raise
def remove_outbound(device, vlan_tag):
"""Removes the qosOutbound configuration from the device and restores
pfifo_fast if it was the last QoSed network on the device. vlan_tag
can be None"""
class_id = '%x' % (_NON_VLANNED_ID if vlan_tag is None else vlan_tag)
MISSING_OBJ_ERR_CODES = (errno.EINVAL, errno.ENOENT, errno.EOPNOTSUPP)
try:
tc.filter.delete(
device, pref=_NON_VLANNED_ID if vlan_tag is None else vlan_tag)
except tc.TrafficControlException as tce:
if tce.errCode not in MISSING_OBJ_ERR_CODES: # No filter exists
raise
device_qdiscs = list(tc.qdiscs(device))
if not device_qdiscs:
return
root_qdisc_handle = netinfo_qos.get_root_qdisc(device_qdiscs)['handle']
try:
tc.cls.delete(device, classid=root_qdisc_handle + class_id)
except tc.TrafficControlException as tce:
if tce.errCode not in MISSING_OBJ_ERR_CODES: # No class exists
raise
if not _uses_classes(device, root_qdisc_handle=root_qdisc_handle):
try:
tc._qdisc_del(device)
tc._qdisc_del(device, kind='ingress')
except tc.TrafficControlException as tce:
if tce.errCode not in MISSING_OBJ_ERR_CODES: # No qdisc
raise
def test_get_root_qdisc(self):
root = {'kind': 'hfsc', 'root': True, 'handle': '1:', 'refcnt': 2,
'hfsc': {'default': 0x5000}}
inp = (root,
{'kind': 'sfq', 'handle': '10:', 'parent': '1:10',
'sfq': {'limit': 127, 'quantum': 1514}},
{'kind': 'sfq', 'handle': '20:', 'parent': '1:20',
'sfq': {'limit': 127, 'quantum': 1514}})
self.assertEqual(qos.get_root_qdisc(inp), root)
def test_get_root_qdisc(self):
root = {'kind': 'hfsc', 'root': True, 'handle': '1:', 'refcnt': 2,
'hfsc': {'default': 0x5000}}
inp = (root,
{'kind': 'sfq', 'handle': '10:', 'parent': '1:10',
'sfq': {'limit': 127, 'quantum': 1514}},
{'kind': 'sfq', 'handle': '20:', 'parent': '1:20',
'sfq': {'limit': 127, 'quantum': 1514}})
self.assertEqual(qos.get_root_qdisc(inp), root)
def configure_outbound(qosOutbound, device, vlan_tag):
"""Adds the qosOutbound configuration to the backing device (be it bond
or nic). Adds a class and filter for default traffic if necessary. vlan_tag
can be None"""
root_qdisc = netinfo_qos.get_root_qdisc(tc.qdiscs(device))
class_id = '%x' % (_NON_VLANNED_ID if vlan_tag is None else vlan_tag)
if not root_qdisc or root_qdisc['kind'] != _SHAPING_QDISC_KIND:
_fresh_qdisc_conf_out(device, vlan_tag, class_id, qosOutbound)
else:
_qdisc_conf_out(device, root_qdisc['handle'], vlan_tag, class_id,
qosOutbound)
def _uses_classes(device, root_qdisc_handle=None):
"""Returns true iff there's traffic classes in the device, ignoring the
root class and a default unused class"""
if root_qdisc_handle is None:
root_qdisc = netinfo_qos.get_root_qdisc(tc.qdiscs(device))
root_qdisc_handle = root_qdisc['handle']
classes = [cls for cls in tc.classes(device, parent=root_qdisc_handle) if
not cls.get('root')]
return (classes and
not(len(classes) == 1 and not ifaceUsed(device) and
classes[0]['handle'] == root_qdisc_handle + _DEFAULT_CLASSID))
def configure_outbound(qosOutbound, device, vlan_tag):
"""Adds the qosOutbound configuration to the backing device (be it bond
or nic). Adds a class and filter for default traffic if necessary. vlan_tag
can be None"""
root_qdisc = netinfo_qos.get_root_qdisc(tc.qdiscs(device))
class_id = '%x' % (_NON_VLANNED_ID if vlan_tag is None else vlan_tag)
if not root_qdisc or root_qdisc['kind'] != _SHAPING_QDISC_KIND:
_fresh_qdisc_conf_out(device, vlan_tag, class_id, qosOutbound)
else:
_qdisc_conf_out(device, root_qdisc['handle'], vlan_tag, class_id,
qosOutbound)
def _uses_classes(device, root_qdisc_handle=None):
"""Returns true iff there's traffic classes in the device, ignoring the
root class and a default unused class"""
if root_qdisc_handle is None:
root_qdisc = netinfo_qos.get_root_qdisc(tc.qdiscs(device))
root_qdisc_handle = root_qdisc['handle']
classes = [
cls for cls in tc.classes(device, parent=root_qdisc_handle)
if not cls.get('root')
]
return (classes and
not (len(classes) == 1 and not ifaceUsed(device) and
classes[0]['handle'] == root_qdisc_handle + _DEFAULT_CLASSID))