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|
"""
SRv6 LocalSIDs
object abstractions for representing SRv6 localSIDs in VPP
"""
from vpp_object import VppObject
from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
import copy
class SRv6LocalSIDBehaviors:
# from src/vnet/srv6/sr.h
SR_BEHAVIOR_END = 1
SR_BEHAVIOR_X = 2
SR_BEHAVIOR_T = 3
SR_BEHAVIOR_D_FIRST = 4 # Unused. Separator in between regular and D
SR_BEHAVIOR_DX2 = 5
SR_BEHAVIOR_DX6 = 6
SR_BEHAVIOR_DX4 = 7
SR_BEHAVIOR_DT6 = 8
SR_BEHAVIOR_DT4 = 9
SR_BEHAVIOR_LAST = 10 # Not used anymore. Kept not to break the API.
SR_BEHAVIOR_END_UN_PERF = 11
SR_BEHAVIOR_END_UN = 12
SR_BEHAVIOR_END_UA = 13
class SRv6PolicyType:
# from src/vnet/srv6/sr.h
SR_POLICY_TYPE_DEFAULT = 0
SR_POLICY_TYPE_SPRAY = 1
SR_POLICY_TYPE_TEF = 2
class SRv6PolicySteeringTypes:
# from src/vnet/srv6/sr.h
SR_STEER_L2 = 2
SR_STEER_IPV4 = 4
SR_STEER_IPV6 = 6
class VppSRv6LocalSID(VppObject):
"""
SRv6 LocalSID
"""
def __init__(
self,
test,
localsid,
behavior,
nh_addr,
end_psp,
sw_if_index,
vlan_index,
fib_table,
):
self._test = test
self.localsid = localsid
self.behavior = behavior
self.nh_addr = nh_addr
self.end_psp = end_psp
self.sw_if_index = sw_if_index
self.vlan_index = vlan_index
self.fib_table = fib_table
self._configured = False
def add_vpp_config(self):
self._test.vapi.sr_localsid_add_del(
localsid=self.localsid,
behavior=self.behavior,
nh_addr=self.nh_addr,
is_del=0,
end_psp=self.end_psp,
sw_if_index=self.sw_if_index,
vlan_index=self.vlan_index,
fib_table=self.fib_table,
)
self._configured = True
def remove_vpp_config(self):
self._test.vapi.sr_localsid_add_del(
localsid=self.localsid,
behavior=self.behavior,
nh_addr=self.nh_addr,
is_del=1,
end_psp=self.end_psp,
sw_if_index=self.sw_if_index,
vlan_index=self.vlan_index,
fib_table=self.fib_table,
)
self._configured = False
def query_vpp_config(self):
# sr_localsids_dump API is disabled
# use _configured flag for now
return self._configured
def object_id(self):
return "%d;%s,%d" % (self.fib_table, self.localsid, self.behavior)
class VppSRv6Policy(VppObject):
"""
SRv6 Policy
"""
def __init__(
self, test, bsid, is_encap, sr_type, weight, fib_table, segments, source
):
self._test = test
self.bsid = bsid
self.is_encap = is_encap
self.sr_type = sr_type
self.weight = weight
self.fib_table = fib_table
self.segments = segments
self.n_segments = len(segments)
# source not passed to API
# self.source = inet_pton(AF_INET6, source)
self.source = source
self._configured = False
def add_vpp_config(self):
self._test.vapi.sr_policy_add(
bsid=self.bsid,
weight=self.weight,
is_encap=self.is_encap,
is_spray=self.sr_type,
fib_table=self.fib_table,
sids={"num_sids": self.n_segments, "sids": self.segments},
)
self._configured = True
def remove_vpp_config(self):
self._test.vapi.sr_policy_del(self.bsid)
self._configured = False
def query_vpp_config(self):
# no API to query SR Policies
# use _configured flag for now
return self._configured
def object_id(self):
return "%d;%s-><%s>;%d" % (
self.sr_type,
self.bsid,
",".join(self.segments),
self.is_encap,
)
class VppSRv6PolicyV2(VppObject):
"""
SRv6 Policy
"""
def __init__(
self,
test,
bsid,
is_encap,
sr_type,
weight,
fib_table,
segments,
encap_src,
source,
):
self._test = test
self.bsid = bsid
self.is_encap = is_encap
self.sr_type = sr_type
self.weight = weight
self.fib_table = fib_table
self.segments = segments
self.encap_src = encap_src
self.n_segments = len(segments)
# source not passed to API
# self.source = inet_pton(AF_INET6, source)
self.source = source
self._configured = False
def add_vpp_config(self):
self._test.vapi.sr_policy_add_v2(
bsid_addr=self.bsid,
weight=self.weight,
is_encap=self.is_encap,
type=self.sr_type,
fib_table=self.fib_table,
encap_src=self.encap_src,
sids={
"num_sids": self.n_segments,
"sids": self._get_fixed_segments(),
"weight": 1,
},
)
self._configured = True
def remove_vpp_config(self):
self._test.vapi.sr_policy_del(self.bsid)
self._configured = False
def query_vpp_config(self):
# no API to query SR Policies
# use _configured flag for now
return self._configured
def object_id(self):
return "%d;%s-><%s>;%d" % (
self.sr_type,
self.bsid,
",".join(self.segments),
self.is_encap,
)
def _get_fixed_segments(self):
segs = copy.copy(self.segments)
# note: array expect size is 16
for _ in range(16 - self.n_segments):
segs.append("")
return segs
class VppSRv6Steering(VppObject):
"""
SRv6 Steering
"""
def __init__(
self,
test,
bsid,
prefix,
mask_width,
traffic_type,
sr_policy_index,
table_id,
sw_if_index,
):
self._test = test
self.bsid = bsid
self.prefix = prefix
self.mask_width = mask_width
self.traffic_type = traffic_type
self.sr_policy_index = sr_policy_index
self.sw_if_index = sw_if_index
self.table_id = table_id
self._configured = False
def add_vpp_config(self):
self._test.vapi.sr_steering_add_del(
is_del=0,
bsid_addr=self.bsid,
sr_policy_index=self.sr_policy_index,
table_id=self.table_id,
prefix={"address": self.prefix, "len": self.mask_width},
sw_if_index=self.sw_if_index,
traffic_type=self.traffic_type,
)
self._configured = True
def remove_vpp_config(self):
self._test.vapi.sr_steering_add_del(
is_del=1,
bsid_addr=self.bsid,
sr_policy_index=self.sr_policy_index,
table_id=self.table_id,
prefix={"address": self.prefix, "len": self.mask_width},
sw_if_index=self.sw_if_index,
traffic_type=self.traffic_type,
)
self._configured = False
def query_vpp_config(self):
# no API to query steering entries
# use _configured flag for now
return self._configured
def object_id(self):
return "%d;%d;%s/%d->%s" % (
self.table_id,
self.traffic_type,
self.prefix,
self.mask_width,
self.bsid,
)
|
