#!/usr/bin/env python3 # # Copyright (C) 2021 VyOS maintainers and contributors # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License version 2 or later as # published by the Free Software Foundation. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. # T3619: mirror Linux Kernel defaults for ethernet offloading options into VyOS # CLI. See https://vyos.dev/T3619#102254 for all the details. # T3787: Remove deprecated UDP fragmentation offloading option from sys import argv from vyos.ethtool import Ethtool from vyos.configtree import ConfigTree if len(argv) < 2: print("Must specify file name!") exit(1) file_name = argv[1] with open(file_name, 'r') as f: config_file = f.read() base = ['interfaces', 'ethernet'] config = ConfigTree(config_file) if not config.exists(base): exit(0) for ifname in config.list_nodes(base): eth = Ethtool(ifname) # If GRO is enabled by the Kernel - we reflect this on the CLI. If GRO is # enabled via CLI but not supported by the NIC - we remove it from the CLI configured = config.exists(base + [ifname, 'offload', 'gro']) enabled, fixed = eth.get_generic_receive_offload() if configured and fixed: config.delete(base + [ifname, 'offload', 'gro']) elif enabled and not fixed: config.set(base + [ifname, 'offload', 'gro']) # If GSO is enabled by the Kernel - we reflect this on the CLI. If GSO is # enabled via CLI but not supported by the NIC - we remove it from the CLI configured = config.exists(base + [ifname, 'offload', 'gso']) enabled, fixed = eth.get_generic_segmentation_offload() if configured and fixed: config.delete(base + [ifname, 'offload', 'gso']) elif enabled and not fixed: config.set(base + [ifname, 'offload', 'gso']) # If LRO is enabled by the Kernel - we reflect this on the CLI. If LRO is # enabled via CLI but not supported by the NIC - we remove it from the CLI configured = config.exists(base + [ifname, 'offload', 'lro']) enabled, fixed = eth.get_large_receive_offload() if configured and fixed: config.delete(base + [ifname, 'offload', 'lro']) elif enabled and not fixed: config.set(base + [ifname, 'offload', 'lro']) # If SG is enabled by the Kernel - we reflect this on the CLI. If SG is # enabled via CLI but not supported by the NIC - we remove it from the CLI configured = config.exists(base + [ifname, 'offload', 'sg']) enabled, fixed = eth.get_scatter_gather() if configured and fixed: config.delete(base + [ifname, 'offload', 'sg']) elif enabled and not fixed: config.set(base + [ifname, 'offload', 'sg']) # If TSO is enabled by the Kernel - we reflect this on the CLI. If TSO is # enabled via CLI but not supported by the NIC - we remove it from the CLI configured = config.exists(base + [ifname, 'offload', 'tso']) enabled, fixed = eth.get_tcp_segmentation_offload() if configured and fixed: config.delete(base + [ifname, 'offload', 'tso']) elif enabled and not fixed: config.set(base + [ifname, 'offload', 'tso']) # Remove deprecated UDP fragmentation offloading option if config.exists(base + [ifname, 'offload', 'ufo']): config.delete(base + [ifname, 'offload', 'ufo']) # Also while processing the interface configuration, not all adapters support # changing the speed and duplex settings. If the desired speed and duplex # values do not work for the NIC driver, we change them back to the default # value of "auto" - which will be applied if the CLI node is deleted. speed_path = base + [ifname, 'speed'] duplex_path = base + [ifname, 'duplex'] # speed and duplex must always be set at the same time if not set to "auto" if config.exists(speed_path) and config.exists(duplex_path): speed = config.return_value(speed_path) duplex = config.return_value(duplex_path) if speed != 'auto' and duplex != 'auto': if not eth.check_speed_duplex(speed, duplex): config.delete(speed_path) config.delete(duplex_path) # Also while processing the interface configuration, not all adapters support # changing disabling flow-control - or change this setting. If disabling # flow-control is not supported by the NIC, we remove the setting from CLI flow_control_path = base + [ifname, 'disable-flow-control'] if config.exists(flow_control_path): if not eth.check_flow_control(): config.delete(flow_control_path) try: with open(file_name, 'w') as f: f.write(config.to_string()) except OSError as e: print("Failed to save the modified config: {}".format(e)) exit(1)