migration: T6006: add activation script dir and helper function

3 files changed, 197 insertions, 0 deletions

diff --git a/src/activation-scripts/20-ethernet_offload.py b/src/activation-scripts/20-ethernet_offload.py
new file mode 100755
index 000000000..33b0ea469
--- /dev/null
+++ b/src/activation-scripts/20-ethernet_offload.py
@@ -0,0 +1,103 @@
+# Copyright 2021-2024 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library.  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
+# T6006: add to activation-scripts: migration-scripts/interfaces/20-to-21
+
+from vyos.ethtool import Ethtool
+from vyos.configtree import ConfigTree
+
+def activate(config: ConfigTree):
+    base = ['interfaces', 'ethernet']
+
+    if not config.exists(base):
+        return
+
+    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)
diff --git a/src/helpers/run-config-activation.py b/src/helpers/run-config-activation.py
new file mode 100755
index 000000000..58293702a
--- /dev/null
+++ b/src/helpers/run-config-activation.py
@@ -0,0 +1,83 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2024 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/>.
+
+import re
+import logging
+from pathlib import Path
+from argparse import ArgumentParser
+
+from vyos.compose_config import ComposeConfig
+from vyos.compose_config import ComposeConfigError
+from vyos.defaults import directories
+
+parser = ArgumentParser()
+parser.add_argument('config_file', type=str,
+                    help="configuration file to modify with system-specific settings")
+parser.add_argument('--test-script', type=str,
+                    help="test effect of named script")
+
+args = parser.parse_args()
+
+checkpoint_file = '/run/vyos-activate-checkpoint'
+log_file = Path(directories['config']).joinpath('vyos-activate.log')
+
+logger = logging.getLogger(__name__)
+fh = logging.FileHandler(log_file)
+formatter = logging.Formatter('%(message)s')
+fh.setFormatter(formatter)
+logger.addHandler(fh)
+
+if 'vyos-activate-debug' in Path('/proc/cmdline').read_text():
+    print(f'\nactivate-debug enabled: file {checkpoint_file}_* on error')
+    debug = checkpoint_file
+    logger.setLevel(logging.DEBUG)
+else:
+    debug = None
+    logger.setLevel(logging.INFO)
+
+def sort_key(s: Path):
+    s = s.stem
+    pre, rem = re.match(r'(\d*)(?:-)?(.+)', s).groups()
+    return int(pre or 0), rem
+
+def file_ext(file_name: str) -> str:
+    """Return an identifier from file name for checkpoint file extension.
+    """
+    return Path(file_name).stem
+
+script_dir = Path(directories['activate'])
+
+if args.test_script:
+    script_list = [script_dir.joinpath(args.test_script)]
+else:
+    script_list = sorted(script_dir.glob('*.py'), key=sort_key)
+
+config_file = args.config_file
+config_str = Path(config_file).read_text()
+
+compose = ComposeConfig(config_str, checkpoint_file=debug)
+
+for file in script_list:
+    file = file.as_posix()
+    logger.info(f'calling {file}')
+    try:
+        compose.apply_file(file, func_name='activate')
+    except ComposeConfigError as e:
+        if debug:
+            compose.write(f'{compose.checkpoint_file}_{file_ext(file)}')
+        logger.error(f'config-activation error in {file}: {e}')
+
+compose.write(config_file, with_version=True)
diff --git a/src/init/vyos-router b/src/init/vyos-router
index a88810f08..59004fdc1 100755
--- a/src/init/vyos-router
+++ b/src/init/vyos-router
@@ -157,6 +157,15 @@ migrate_bootfile ()
     fi
 }
 
+# configure system-specific settings
+system_config ()
+{
+    if [ -x $vyos_libexec_dir/run-config-activation.py ]; then
+        log_progress_msg system
+        sg ${GROUP} -c "$vyos_libexec_dir/run-config-activation.py $BOOTFILE"
+    fi
+}
+
 # load the initial config
 load_bootfile ()
 {
@@ -501,6 +510,8 @@ start ()
 
     update_interface_config
 
+    disabled system_config || system_config
+
     for s in ${subinit[@]} ; do
     if ! disabled $s; then
         log_progress_msg $s