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|
"""
SRv6 LocalSIDs
object abstractions for representing SRv6 localSIDs in VPP
"""
from vpp_object import *
from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
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 # Must always be the last one
class SRv6PolicyType():
# from src/vnet/srv6/sr.h
SR_POLICY_TYPE_DEFAULT = 0
SR_POLICY_TYPE_SPRAY = 1
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_addr, behavior, nh_addr, end_psp,
sw_if_index, vlan_index, fib_table):
self._test = test
self.localsid_addr = localsid_addr
# keep binary format in _localsid_addr
self._localsid_addr = inet_pton(AF_INET6, self.localsid_addr)
self.behavior = behavior
self.nh_addr = nh_addr
# keep binary format in _nh_addr
if ':' in nh_addr:
# IPv6
self._nh_addr = inet_pton(AF_INET6, nh_addr)
else:
# IPv4
# API expects 16 octets (128 bits)
# last 4 octets are used for IPv4
# --> prepend 12 octets
self._nh_addr = ('\x00' * 12) + inet_pton(AF_INET, 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(
self._localsid_addr,
self.behavior,
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(
self._localsid_addr,
self.behavior,
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 __str__(self):
return self.object_id()
def object_id(self):
return ("%d;%s,%d"
% (self.fib_table,
self.localsid_addr,
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
# keep binary format in _bsid
self._bsid = inet_pton(AF_INET6, bsid)
self.is_encap = is_encap
self.sr_type = sr_type
self.weight = weight
self.fib_table = fib_table
self.segments = segments
# keep binary format in _segments
self._segments = []
for seg in segments:
self._segments.extend(inet_pton(AF_INET6, seg))
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(
self._bsid,
self.weight,
self.is_encap,
self.sr_type,
self.fib_table,
self.n_segments,
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 __str__(self):
return self.object_id()
def object_id(self):
return ("%d;%s-><%s>;%d"
% (self.sr_type,
self.bsid,
','.join(self.segments),
self.is_encap))
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
# keep binary format in _bsid
self._bsid = inet_pton(AF_INET6, bsid)
self.prefix = prefix
# keep binary format in _prefix
if ':' in prefix:
# IPv6
self._prefix = inet_pton(AF_INET6, prefix)
else:
# IPv4
# API expects 16 octets (128 bits)
# last 4 octets are used for IPv4
# --> prepend 12 octets
self._prefix = ('\x00' * 12) + inet_pton(AF_INET, 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(
0,
self._bsid,
self.sr_policy_index,
self.table_id,
self._prefix,
self.mask_width,
self.sw_if_index,
self.traffic_type)
self._configured = True
def remove_vpp_config(self):
self._test.vapi.sr_steering_add_del(
1,
self._bsid,
self.sr_policy_index,
self.table_id,
self._prefix,
self.mask_width,
self.sw_if_index,
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 __str__(self):
return self.object_id()
def object_id(self):
return ("%d;%d;%s/%d->%s"
% (self.table_id,
self.traffic_type,
self.prefix,
self.mask_width,
self.bsid))
|
