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perftune.py: add support for Azure netvsc driver #3190

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perftune.py: add support for Azure netvsc driver #3190

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98812f2
perftune.py: add support for Azure netvsc driver
mykaul Dec 31, 2025
5e45835
perftune.py: generalize slave detection logic
mykaul Jan 1, 2026
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12 changes: 8 additions & 4 deletions scripts/perftune.py
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Original file line number Diff line number Diff line change
Expand Up @@ -653,7 +653,8 @@ def tune(self):
perftune_print("Setting a physical interface {}...".format(nic))
self.__setup_one_hw_iface(nic)
else:
perftune_print(f"Setting a {nic} {'bond' if self.nic_is_bond_iface(nic) else 'VLAN'} interface...")
type_str = 'bond' if self.nic_is_bond_iface(nic) else ('VLAN' if self.nic_is_vlan_iface(nic) else 'has_slaves')
perftune_print(f"Setting a {nic} {type_str} interface...")
self.__setup_composite_iface(nic)

# Increase the socket listen() backlog
Expand All @@ -680,14 +681,17 @@ def nic_is_bond_iface(self, nic):
def nic_is_vlan_iface(self, nic):
return self.__nic_is_vlan_iface.get(nic, False)

def nic_has_slaves(self, nic):
return bool(glob.glob(f"/sys/class/net/{nic}/lower_*"))

def nic_is_composite_iface(self, nic):
return self.nic_is_bond_iface(nic) or self.nic_is_vlan_iface(nic)
return self.nic_is_bond_iface(nic) or self.nic_is_vlan_iface(nic) or self.nic_has_slaves(nic)

def nic_exists(self, nic):
return self.__iface_exists(nic)

def nic_is_hw_iface(self, nic):
return self.__dev_is_hw_iface(nic)
return self.__dev_is_hw_iface(nic) and not self.nic_has_slaves(nic)

def slaves(self, nic):
"""
Expand Down Expand Up @@ -837,7 +841,7 @@ def __learn_slaves_one(self, nic):
if self.nic_is_bond_iface(nic):
top_slaves_list = set(itertools.chain.from_iterable(
[line.split() for line in open("/sys/class/net/{}/bonding/slaves".format(nic), 'r').readlines()]))
elif self.nic_is_vlan_iface(nic):
elif self.nic_is_vlan_iface(nic) or self.nic_has_slaves(nic):
# VLAN interfaces have a symbolic link 'lower_<parent_interface_name>' under
# /sys/class/net/<VLAN interface name>.
#
Expand Down