From 946f93778f15f4af9f31cd5b164efcd931693635 Mon Sep 17 00:00:00 2001
From: Christian Breunig <christian@breunig.cc>
Date: Sun, 24 Mar 2024 09:28:06 +0100
Subject: Revert "ethernet: T5566: disable energy efficient ethernet (EEE) for
 interfaces"

This reverts commit ab30509b25d54dac99294b76ba03fd49c3d2c946.

As in T6152 there seem to be some NICs that have a non working implementation
of reading the EEE registers. Remove this feature in the meantime until there
is a less exploding solution hindering boards to boot.

Return to Kernel defaults by removing this code path.
---
 python/vyos/ethtool.py           | 24 ------------------------
 python/vyos/ifconfig/ethernet.py | 31 -------------------------------
 2 files changed, 55 deletions(-)

diff --git a/python/vyos/ethtool.py b/python/vyos/ethtool.py
index 473c98d0c..5e241fc08 100644
--- a/python/vyos/ethtool.py
+++ b/python/vyos/ethtool.py
@@ -24,7 +24,6 @@ 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:
     """
@@ -63,8 +62,6 @@ class Ethtool:
     _auto_negotiation = False
     _auto_negotiation_supported = None
     _flow_control = None
-    _eee = False
-    _eee_enabled = None
 
     def __init__(self, ifname):
         # Get driver used for interface
@@ -118,15 +115,6 @@ class Ethtool:
         if not bool(err):
             self._flow_control = loads(out)
 
-        # 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()[1])
-
     def check_auto_negotiation_supported(self):
         """ Check if the NIC supports changing auto-negotiation """
         return self._auto_negotiation_supported
@@ -211,15 +199,3 @@ class Ethtool:
                              'flow-control settings!')
 
         return 'on' if bool(self._flow_control[0]['autonegotiate']) else 'off'
-
-    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 c3f5bbf47..8d96c863f 100644
--- a/python/vyos/ifconfig/ethernet.py
+++ b/python/vyos/ifconfig/ethernet.py
@@ -404,34 +404,6 @@ 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
@@ -442,9 +414,6 @@ 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)
 
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