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# Copyright 2022 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/>.
from vyos.qos.base import QoSBase
class CAKE(QoSBase):
_direction = ['egress']
# https://man7.org/linux/man-pages/man8/tc-cake.8.html
def update(self, config, direction):
tmp = f'tc qdisc add dev {self._interface} root handle 1: cake {direction}'
if 'bandwidth' in config:
bandwidth = self._rate_convert(config['bandwidth'])
tmp += f' bandwidth {bandwidth}'
if 'rtt' in config:
rtt = config['rtt']
tmp += f' rtt {rtt}ms'
if 'flow_isolation' in config:
if 'blind' in config['flow_isolation']:
tmp += f' flowblind'
if 'dst_host' in config['flow_isolation']:
tmp += f' dsthost'
if 'dual_dst_host' in config['flow_isolation']:
tmp += f' dual-dsthost'
if 'dual_src_host' in config['flow_isolation']:
tmp += f' dual-srchost'
if 'flow' in config['flow_isolation']:
tmp += f' flows'
if 'host' in config['flow_isolation']:
tmp += f' hosts'
if 'nat' in config['flow_isolation']:
tmp += f' nat'
if 'src_host' in config['flow_isolation']:
tmp += f' srchost '
else:
tmp += f' nonat'
self._cmd(tmp)
# call base class
super().update(config, direction)
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