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faucet_pipeline.py
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faucet_pipeline.py
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"""Standard FAUCET pipeline."""
# Copyright (C) 2015 Brad Cowie, Christopher Lorier and Joe Stringer.
# Copyright (C) 2015 Research and Education Advanced Network New Zealand Ltd.
# Copyright (C) 2015--2019 The Contributors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from faucet.faucet_metadata import EGRESS_METADATA_MASK
class ValveTableConfig: # pylint: disable=too-few-public-methods,too-many-instance-attributes
"""Configuration for a single table."""
def __init__(self, name, table_id, # pylint: disable=too-many-arguments
exact_match=None, meter=None, output=True, miss_goto=None,
size=None, match_types=None, set_fields=None, dec_ttl=None,
vlan_scale=None, vlan_port_scale=None,
next_tables=None, metadata_match=0, metadata_write=0):
self.name = name
self.table_id = table_id
self.exact_match = exact_match
self.meter = meter
self.output = output
self.miss_goto = miss_goto
self.size = size
self.match_types = match_types
self.set_fields = set_fields
self.dec_ttl = dec_ttl
self.vlan_scale = vlan_scale
self.vlan_port_scale = vlan_port_scale
self.metadata_match = metadata_match
self.metadata_write = metadata_write
if next_tables:
assert isinstance(next_tables, (list, tuple))
self.next_tables = next_tables
else:
self.next_tables = ()
def __str__(self):
field_strs = ' '.join([
'%s: %s' % (key, val)
for key, val in sorted(self.__dict__.items())
if val])
return 'table config %s' % field_strs
def __repr__(self):
return self.__str__()
def __hash__(self):
return hash(self.__str__())
def __eq__(self, other):
return self.__hash__() == other.__hash__()
def __lt__(self, other):
return self.__hash__() < other.__hash__()
_NEXT_ETH = ('eth_dst_hairpin', 'eth_dst', 'flood')
_NEXT_VIP = ('vip',) + _NEXT_ETH
def _fib_table(ipv, table_id):
return ValveTableConfig(
'ipv%u_fib' % ipv,
table_id,
match_types=(('eth_type', False), ('ipv%u_dst' % ipv, True), ('vlan_vid', False)),
set_fields=('eth_dst', 'eth_src', 'vlan_vid'),
dec_ttl=True,
vlan_port_scale=3.1,
next_tables=_NEXT_VIP
)
PORT_ACL_DEFAULT_CONFIG = ValveTableConfig(
'port_acl',
0,
match_types=(('in_port', False),),
next_tables=(('vlan',) + _NEXT_VIP)
)
VLAN_DEFAULT_CONFIG = ValveTableConfig(
'vlan',
PORT_ACL_DEFAULT_CONFIG.table_id + 1,
match_types=(('eth_dst', True), ('eth_type', False),
('in_port', False), ('vlan_vid', False)),
set_fields=('vlan_vid',),
vlan_port_scale=1.5,
next_tables=('copro', 'vlan_acl', 'classification', 'eth_src')
)
COPRO_DEFAULT_CONFIG = ValveTableConfig(
'copro',
VLAN_DEFAULT_CONFIG.table_id + 1,
match_types=(('in_port', False), ('eth_type', False), ('vlan_vid', False)),
vlan_port_scale=1.5,
miss_goto='eth_dst',
next_tables=(('eth_dst',)),
)
VLAN_ACL_DEFAULT_CONFIG = ValveTableConfig(
'vlan_acl',
VLAN_DEFAULT_CONFIG.table_id + 1,
next_tables=(('classification', 'eth_src') + _NEXT_ETH))
CLASSIFICATION_DEFAULT_CONFIG = ValveTableConfig(
'classification',
VLAN_ACL_DEFAULT_CONFIG.table_id + 1,
miss_goto='eth_src',
next_tables=(('eth_src', 'ipv4_fib', 'ipv6_fib') + _NEXT_VIP)
)
ETH_SRC_DEFAULT_CONFIG = ValveTableConfig(
'eth_src',
CLASSIFICATION_DEFAULT_CONFIG.table_id + 1,
miss_goto='eth_dst',
next_tables=(('ipv4_fib', 'ipv6_fib') + _NEXT_VIP),
match_types=(('eth_dst', True), ('eth_src', False), ('eth_type', False),
('in_port', False), ('vlan_vid', False)),
set_fields=('vlan_vid', 'eth_dst'),
vlan_port_scale=4.1,
)
IPV4_FIB_DEFAULT_CONFIG = _fib_table(4, ETH_SRC_DEFAULT_CONFIG.table_id + 1)
IPV6_FIB_DEFAULT_CONFIG = _fib_table(6, IPV4_FIB_DEFAULT_CONFIG.table_id + 1)
VIP_DEFAULT_CONFIG = ValveTableConfig(
'vip',
IPV6_FIB_DEFAULT_CONFIG.table_id + 1,
match_types=(('arp_tpa', False), ('eth_dst', False), ('eth_type', False),
('icmpv6_type', False), ('ip_proto', False)),
next_tables=_NEXT_ETH,
vlan_scale=8,
)
ETH_DST_HAIRPIN_DEFAULT_CONFIG = ValveTableConfig(
'eth_dst_hairpin',
VIP_DEFAULT_CONFIG.table_id + 1,
match_types=(('in_port', False), ('eth_dst', False), ('vlan_vid', False)),
miss_goto='eth_dst',
exact_match=True,
vlan_port_scale=4.1,
)
ETH_DST_DEFAULT_CONFIG = ValveTableConfig(
'eth_dst',
ETH_DST_HAIRPIN_DEFAULT_CONFIG.table_id + 1,
exact_match=True,
miss_goto='flood', # Note: when using egress acls the miss goto will be
# egress acl table
match_types=(('eth_dst', False), ('vlan_vid', False)),
next_tables=('egress', 'egress_acl'),
vlan_port_scale=4.1,
metadata_write=EGRESS_METADATA_MASK
)
EGRESS_ACL_DEFAULT_CONFIG = ValveTableConfig(
'egress_acl',
ETH_DST_DEFAULT_CONFIG.table_id + 1,
next_tables=('egress',)
)
EGRESS_DEFAULT_CONFIG = ValveTableConfig(
'egress',
EGRESS_ACL_DEFAULT_CONFIG.table_id + 1,
match_types=(('metadata', True), ('vlan_vid', False)),
vlan_port_scale=1.5,
next_tables=('flood',),
miss_goto='flood',
metadata_match=EGRESS_METADATA_MASK
)
FLOOD_DEFAULT_CONFIG = ValveTableConfig(
'flood',
EGRESS_DEFAULT_CONFIG.table_id + 1,
match_types=(('eth_dst', True), ('in_port', False), ('vlan_vid', False)),
vlan_scale=16,
)
MINIMUM_FAUCET_PIPELINE_TABLES = {
'vlan', 'eth_src', 'eth_dst', 'flood'}
# TODO: implement an eth_type table before VLAN. This would enable interception
# of control protocols and simplify matches in vlan/eth_src, enabling use of
# exact_match.
FAUCET_PIPELINE = (
PORT_ACL_DEFAULT_CONFIG,
VLAN_DEFAULT_CONFIG,
COPRO_DEFAULT_CONFIG,
VLAN_ACL_DEFAULT_CONFIG,
CLASSIFICATION_DEFAULT_CONFIG,
ETH_SRC_DEFAULT_CONFIG,
IPV4_FIB_DEFAULT_CONFIG,
IPV6_FIB_DEFAULT_CONFIG,
VIP_DEFAULT_CONFIG,
ETH_DST_HAIRPIN_DEFAULT_CONFIG,
ETH_DST_DEFAULT_CONFIG,
EGRESS_ACL_DEFAULT_CONFIG,
EGRESS_DEFAULT_CONFIG,
FLOOD_DEFAULT_CONFIG,
)
DEFAULT_CONFIGS = {
'port_acl': PORT_ACL_DEFAULT_CONFIG,
'vlan': VLAN_DEFAULT_CONFIG,
'copro': COPRO_DEFAULT_CONFIG,
'vlan_acl': VLAN_ACL_DEFAULT_CONFIG,
'eth_src': ETH_SRC_DEFAULT_CONFIG,
'ipv4_fib': IPV4_FIB_DEFAULT_CONFIG,
'ipv6_fib': IPV6_FIB_DEFAULT_CONFIG,
'vip': VIP_DEFAULT_CONFIG,
'eth_dst_hairpin': ETH_DST_HAIRPIN_DEFAULT_CONFIG,
'eth_dst': ETH_DST_DEFAULT_CONFIG,
'egress_acl': EGRESS_ACL_DEFAULT_CONFIG,
'egress': EGRESS_DEFAULT_CONFIG,
'flood': FLOOD_DEFAULT_CONFIG,
}