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authorChristian Breunig <christian@breunig.cc>2023-12-25 11:00:20 +0100
committerChristian Breunig <christian@breunig.cc>2023-12-25 11:11:55 +0100
commitab30509b25d54dac99294b76ba03fd49c3d2c946 (patch)
treec4d7abd50f4d41ab14b4263882032acc7fae6d21
parentfb3a7e30bffc949584bbb0ad1f6632ef940605be (diff)
downloadvyos-1x-ab30509b25d54dac99294b76ba03fd49c3d2c946.tar.gz
vyos-1x-ab30509b25d54dac99294b76ba03fd49c3d2c946.zip
ethernet: T5566: disable energy efficient ethernet (EEE) for interfaces
VyOS is a routing (packet pushing) platform, thus supporting EEE which potentially causes issues is not a good idea. Some recent Intel drivers enable EEE by default, thus we will disable this for every NIC supporting EEE.
-rw-r--r--python/vyos/ethtool.py34
-rw-r--r--python/vyos/ifconfig/ethernet.py31
2 files changed, 60 insertions, 5 deletions
diff --git a/python/vyos/ethtool.py b/python/vyos/ethtool.py
index f19632719..ba638b280 100644
--- a/python/vyos/ethtool.py
+++ b/python/vyos/ethtool.py
@@ -23,6 +23,7 @@ from vyos.utils.process import popen
_drivers_without_speed_duplex_flow = ['vmxnet3', 'virtio_net', 'xen_netfront',
'iavf', 'ice', 'i40e', 'hv_netvsc', 'veth', 'ixgbevf',
'tun']
+_drivers_without_eee = ['vmxnet3', 'virtio_net', 'xen_netfront', 'hv_netvsc']
class Ethtool:
"""
@@ -55,16 +56,18 @@ class Ethtool:
_auto_negotiation_supported = None
_flow_control = False
_flow_control_enabled = None
+ _eee = False
+ _eee_enabled = None
def __init__(self, ifname):
# Get driver used for interface
- out, err = popen(f'ethtool --driver {ifname}')
+ out, _ = popen(f'ethtool --driver {ifname}')
driver = re.search(r'driver:\s(\w+)', out)
if driver:
self._driver_name = driver.group(1)
# Build a dictinary of supported link-speed and dupley settings.
- out, err = popen(f'ethtool {ifname}')
+ out, _ = popen(f'ethtool {ifname}')
reading = False
pattern = re.compile(r'\d+base.*')
for line in out.splitlines()[1:]:
@@ -95,7 +98,7 @@ class Ethtool:
self._auto_negotiation = bool(tmp == 'on')
# Now populate features dictionaty
- out, err = popen(f'ethtool --show-features {ifname}')
+ out, _ = popen(f'ethtool --show-features {ifname}')
# skip the first line, it only says: "Features for eth0":
for line in out.splitlines()[1:]:
if ":" in line:
@@ -108,7 +111,7 @@ class Ethtool:
'fixed' : fixed
}
- out, err = popen(f'ethtool --show-ring {ifname}')
+ out, _ = popen(f'ethtool --show-ring {ifname}')
# We are only interested in line 2-5 which contains the device maximum
# ringbuffers
for line in out.splitlines()[2:6]:
@@ -133,13 +136,22 @@ class Ethtool:
# Get current flow control settings, but this is not supported by
# all NICs (e.g. vmxnet3 does not support is)
- out, err = popen(f'ethtool --show-pause {ifname}')
+ out, _ = popen(f'ethtool --show-pause {ifname}')
if len(out.splitlines()) > 1:
self._flow_control = True
# read current flow control setting, this returns:
# ['Autonegotiate:', 'on']
self._flow_control_enabled = out.splitlines()[1].split()[-1]
+ # Get current Energy Efficient Ethernet (EEE) settings, but this is
+ # not supported by all NICs (e.g. vmxnet3 does not support is)
+ out, _ = popen(f'ethtool --show-eee {ifname}')
+ if len(out.splitlines()) > 1:
+ self._eee = True
+ # read current EEE setting, this returns:
+ # EEE status: disabled || EEE status: enabled - inactive || EEE status: enabled - active
+ self._eee_enabled = bool('enabled' in out.splitlines()[2])
+
def check_auto_negotiation_supported(self):
""" Check if the NIC supports changing auto-negotiation """
return self._auto_negotiation_supported
@@ -227,3 +239,15 @@ class Ethtool:
raise ValueError('Interface does not support changing '\
'flow-control settings!')
return self._flow_control_enabled
+
+ def check_eee(self):
+ """ Check if the NIC supports eee """
+ if self.get_driver_name() in _drivers_without_eee:
+ return False
+ return self._eee
+
+ def get_eee(self):
+ if self._eee_enabled == None:
+ raise ValueError('Interface does not support changing '\
+ 'EEE settings!')
+ return self._eee_enabled
diff --git a/python/vyos/ifconfig/ethernet.py b/python/vyos/ifconfig/ethernet.py
index aa1e87744..aaf903acd 100644
--- a/python/vyos/ifconfig/ethernet.py
+++ b/python/vyos/ifconfig/ethernet.py
@@ -399,6 +399,34 @@ class EthernetIf(Interface):
print(f'could not set "{rx_tx}" ring-buffer for {ifname}')
return output
+ def set_eee(self, enable):
+ """
+ Enable/Disable Energy Efficient Ethernet (EEE) settings
+
+ Example:
+ >>> from vyos.ifconfig import EthernetIf
+ >>> i = EthernetIf('eth0')
+ >>> i.set_eee(enable=False)
+ """
+ if not isinstance(enable, bool):
+ raise ValueError('Value out of range')
+
+ if not self.ethtool.check_eee():
+ self._debug_msg(f'NIC driver does not support changing EEE settings!')
+ return False
+
+ current = self.ethtool.get_eee()
+ if current != enable:
+ # Assemble command executed on system. Unfortunately there is no way
+ # to change this setting via sysfs
+ cmd = f'ethtool --set-eee {self.ifname} eee '
+ cmd += 'on' if enable else 'off'
+ output, code = self._popen(cmd)
+ if code:
+ Warning(f'could not change "{self.ifname}" EEE setting!')
+ return output
+ return None
+
def update(self, config):
""" General helper function which works on a dictionary retrived by
get_config_dict(). It's main intention is to consolidate the scattered
@@ -409,6 +437,9 @@ class EthernetIf(Interface):
value = 'off' if 'disable_flow_control' in config else 'on'
self.set_flow_control(value)
+ # Always disable Energy Efficient Ethernet
+ self.set_eee(False)
+
# GRO (generic receive offload)
self.set_gro(dict_search('offload.gro', config) != None)