From 328dba073dc72fd2d87ba85e4e8eb93e50358f31 Mon Sep 17 00:00:00 2001 From: Christian Breunig Date: Tue, 17 Jan 2023 15:23:00 +0100 Subject: ifb: T4938: add Python implementation for input function block interfaces --- debian/vyos-1x.install | 1 + python/vyos/ifconfig/input.py | 12 ++++- smoketest/scripts/cli/test_interfaces_input.py | 52 +++++++++++++++++++ src/conf_mode/interfaces-input.py | 70 ++++++++++++++++++++++++++ src/etc/modprobe.d/ifb.conf | 1 + 5 files changed, 135 insertions(+), 1 deletion(-) create mode 100755 smoketest/scripts/cli/test_interfaces_input.py create mode 100755 src/conf_mode/interfaces-input.py create mode 100644 src/etc/modprobe.d/ifb.conf diff --git a/debian/vyos-1x.install b/debian/vyos-1x.install index edd090993..a54b3b506 100644 --- a/debian/vyos-1x.install +++ b/debian/vyos-1x.install @@ -3,6 +3,7 @@ etc/ipsec.d etc/logrotate.d etc/netplug etc/opennhrp +etc/modprobe.d etc/ppp etc/rsyslog.d etc/securetty diff --git a/python/vyos/ifconfig/input.py b/python/vyos/ifconfig/input.py index db7d2b6b4..3e5f5790d 100644 --- a/python/vyos/ifconfig/input.py +++ b/python/vyos/ifconfig/input.py @@ -1,4 +1,4 @@ -# Copyright 2020 VyOS maintainers and contributors +# Copyright 2023 VyOS maintainers and contributors # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public @@ -17,6 +17,16 @@ from vyos.ifconfig.interface import Interface @Interface.register class InputIf(Interface): + """ + The Intermediate Functional Block (ifb) pseudo network interface acts as a + QoS concentrator for multiple different sources of traffic. Packets from + or to other interfaces have to be redirected to it using the mirred action + in order to be handled, regularly routed traffic will be dropped. This way, + a single stack of qdiscs, classes and filters can be shared between + multiple interfaces. + """ + + iftype = 'ifb' definition = { **Interface.definition, **{ diff --git a/smoketest/scripts/cli/test_interfaces_input.py b/smoketest/scripts/cli/test_interfaces_input.py new file mode 100755 index 000000000..c6d7febec --- /dev/null +++ b/smoketest/scripts/cli/test_interfaces_input.py @@ -0,0 +1,52 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2023 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 . + +import unittest + +from vyos.util import read_file +from vyos.ifconfig import Interface +from base_vyostest_shim import VyOSUnitTestSHIM + +base_path = ['interfaces', 'input'] + +# add a classmethod to setup a temporaray PPPoE server for "proper" validation +class InputInterfaceTest(VyOSUnitTestSHIM.TestCase): + @classmethod + def setUpClass(cls): + super(InputInterfaceTest, cls).setUpClass() + + cls._interfaces = ['ifb10', 'ifb20', 'ifb30'] + + def tearDown(self): + self.cli_delete(base_path) + self.cli_commit() + + def test_01_description(self): + # Check if PPPoE dialer can be configured and runs + for interface in self._interfaces: + self.cli_set(base_path + [interface, 'description', f'foo-{interface}']) + + # commit changes + self.cli_commit() + + # Validate remove interface description "empty" + for interface in self._interfaces: + tmp = read_file(f'/sys/class/net/{interface}/ifalias') + self.assertEqual(tmp, f'foo-{interface}') + self.assertEqual(Interface(interface).get_alias(), f'foo-{interface}') + +if __name__ == '__main__': + unittest.main(verbosity=2) diff --git a/src/conf_mode/interfaces-input.py b/src/conf_mode/interfaces-input.py new file mode 100755 index 000000000..ad248843d --- /dev/null +++ b/src/conf_mode/interfaces-input.py @@ -0,0 +1,70 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2023 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 . + +from sys import exit + +from vyos.config import Config +from vyos.configdict import get_interface_dict +from vyos.configverify import verify_mirror_redirect +from vyos.ifconfig import InputIf +from vyos import ConfigError +from vyos import airbag +airbag.enable() + +def get_config(config=None): + """ + Retrive CLI config as dictionary. Dictionary can never be empty, as at + least the interface name will be added or a deleted flag + """ + if config: + conf = config + else: + conf = Config() + base = ['interfaces', 'input'] + _, ifb = get_interface_dict(conf, base) + + return ifb + +def verify(ifb): + if 'deleted' in ifb: + return None + + verify_mirror_redirect(ifb) + return None + +def generate(ifb): + return None + +def apply(ifb): + d = InputIf(ifb['ifname']) + + # Remove input interface + if 'deleted' in ifb: + d.remove() + else: + d.update(ifb) + + return None + +if __name__ == '__main__': + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + exit(1) diff --git a/src/etc/modprobe.d/ifb.conf b/src/etc/modprobe.d/ifb.conf new file mode 100644 index 000000000..2dcfb6af4 --- /dev/null +++ b/src/etc/modprobe.d/ifb.conf @@ -0,0 +1 @@ +options ifb numifbs=0 -- cgit v1.2.3