""" 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, )