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authorChristian Poessinger <christian@poessinger.com>2021-08-19 18:14:13 +0200
committerChristian Poessinger <christian@poessinger.com>2021-08-21 15:26:35 +0200
commitb7bfcb6ef0e712bb8c39241051e716a833b2ffe8 (patch)
tree6bc7ae43df3fd7e20976dad68cf98a856b236cab /src/conf_mode
parent6bd780887c0e13dc9272ec499ebc6f01cfaf7ea6 (diff)
downloadvyos-1x-b7bfcb6ef0e712bb8c39241051e716a833b2ffe8.tar.gz
vyos-1x-b7bfcb6ef0e712bb8c39241051e716a833b2ffe8.zip
interfaces: T3090: migrate adjust-mss from "firewall options" to "interface" level
Getting rid of "set firewall options" and move it from: set firewall options interface ethX adjust-mss 1400 set firewall options interface ethX adjust-mss6 1400 to: set interfaces ethernet ethX ip adjust-mss 1400 set interfaces ethernet ethX ipv6 adjust-mss 1400 In addition add an extra option called clamp-mss-to-pmtu instead of a value.
Diffstat (limited to 'src/conf_mode')
-rwxr-xr-xsrc/conf_mode/firewall_options.py150
1 files changed, 0 insertions, 150 deletions
diff --git a/src/conf_mode/firewall_options.py b/src/conf_mode/firewall_options.py
deleted file mode 100755
index 67bf5d0e2..000000000
--- a/src/conf_mode/firewall_options.py
+++ /dev/null
@@ -1,150 +0,0 @@
-#!/usr/bin/env python3
-#
-# Copyright (C) 2018 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 sys
-import os
-import copy
-
-from vyos.config import Config
-from vyos import ConfigError
-from vyos.util import call
-
-from vyos import airbag
-airbag.enable()
-
-default_config_data = {
- 'intf_opts': [],
- 'new_chain4': False,
- 'new_chain6': False
-}
-
-def get_config(config=None):
- opts = copy.deepcopy(default_config_data)
- if config:
- conf = config
- else:
- conf = Config()
- if not conf.exists('firewall options'):
- # bail out early
- return opts
- else:
- conf.set_level('firewall options')
-
- # Parse configuration of each individual instance
- if conf.exists('interface'):
- for intf in conf.list_nodes('interface'):
- conf.set_level('firewall options interface {0}'.format(intf))
- config = {
- 'intf': intf,
- 'disabled': False,
- 'mss4': '',
- 'mss6': ''
- }
-
- # Check if individual option is disabled
- if conf.exists('disable'):
- config['disabled'] = True
-
- #
- # Get MSS value IPv4
- #
- if conf.exists('adjust-mss'):
- config['mss4'] = conf.return_value('adjust-mss')
-
- # We need a marker that a new iptables chain needs to be generated
- if not opts['new_chain4']:
- opts['new_chain4'] = True
-
- #
- # Get MSS value IPv6
- #
- if conf.exists('adjust-mss6'):
- config['mss6'] = conf.return_value('adjust-mss6')
-
- # We need a marker that a new ip6tables chain needs to be generated
- if not opts['new_chain6']:
- opts['new_chain6'] = True
-
- # Append interface options to global list
- opts['intf_opts'].append(config)
-
- return opts
-
-def verify(tcp):
- # syntax verification is done via cli
- return None
-
-def apply(tcp):
- target = 'VYOS_FW_OPTIONS'
-
- # always cleanup iptables
- call('iptables --table mangle --delete FORWARD --jump {} >&/dev/null'.format(target))
- call('iptables --table mangle --flush {} >&/dev/null'.format(target))
- call('iptables --table mangle --delete-chain {} >&/dev/null'.format(target))
-
- # always cleanup ip6tables
- call('ip6tables --table mangle --delete FORWARD --jump {} >&/dev/null'.format(target))
- call('ip6tables --table mangle --flush {} >&/dev/null'.format(target))
- call('ip6tables --table mangle --delete-chain {} >&/dev/null'.format(target))
-
- # Setup new iptables rules
- if tcp['new_chain4']:
- call('iptables --table mangle --new-chain {} >&/dev/null'.format(target))
- call('iptables --table mangle --append FORWARD --jump {} >&/dev/null'.format(target))
-
- for opts in tcp['intf_opts']:
- intf = opts['intf']
- mss = opts['mss4']
-
- # Check if this rule iis disabled
- if opts['disabled']:
- continue
-
- # adjust TCP MSS per interface
- if mss:
- call('iptables --table mangle --append {} --out-interface {} --protocol tcp '
- '--tcp-flags SYN,RST SYN --jump TCPMSS --set-mss {} >&/dev/null'.format(target, intf, mss))
-
- # Setup new ip6tables rules
- if tcp['new_chain6']:
- call('ip6tables --table mangle --new-chain {} >&/dev/null'.format(target))
- call('ip6tables --table mangle --append FORWARD --jump {} >&/dev/null'.format(target))
-
- for opts in tcp['intf_opts']:
- intf = opts['intf']
- mss = opts['mss6']
-
- # Check if this rule iis disabled
- if opts['disabled']:
- continue
-
- # adjust TCP MSS per interface
- if mss:
- call('ip6tables --table mangle --append {} --out-interface {} --protocol tcp '
- '--tcp-flags SYN,RST SYN --jump TCPMSS --set-mss {} >&/dev/null'.format(target, intf, mss))
-
- return None
-
-if __name__ == '__main__':
-
- try:
- c = get_config()
- verify(c)
- apply(c)
- except ConfigError as e:
- print(e)
- sys.exit(1)