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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-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=3,
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_port_scale=8.0,
)
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,
}