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sr: support define src ipv6 per encap policy

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Can to define src ip of outer IPv6 Hdr for each encap policy.
Along with that, I decided to develop it as API version V2.
This is useful in the SRv6 MUP case.
For example, it will be possible to handle multiple UPF destinations.

Type: feature
Change-Id: I44ff7b54e8868619069621ab53e194e2c7a17435
Signed-off-by: Takeru Hayasaka <hayatake396@gmail.com>
This commit is contained in:
Takeru Hayasaka
2022-12-30 16:41:44 +09:00
committed by Damjan Marion
parent 7550dd268f
commit c4c205b091
7 changed files with 506 additions and 50 deletions
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116
test/test_srv6.py
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@ -10,6 +10,7 @@ from vpp_srv6 import (
SRv6LocalSIDBehaviors,
VppSRv6LocalSID,
VppSRv6Policy,
VppSRv6PolicyV2,
SRv6PolicyType,
VppSRv6Steering,
SRv6PolicySteeringTypes,
@ -248,6 +249,121 @@ class TestSRv6(VppTestCase):
# cleanup interfaces
self.teardown_interfaces()
def test_SRv6_T_Encaps_with_v6src(self):
"""Test SRv6 Transit.Encaps behavior for IPv6 and select multiple src v6addr case."""
# send traffic to one destination interface
# source and destination are IPv6 only
self.setup_interfaces(ipv6=[True, True])
# configure FIB entries
route = VppIpRoute(
self, "a4::", 64, [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)]
)
route.add_vpp_config()
# configure encaps IPv6 source address
# needs to be done before SR Policy config
# TODO: API?
self.vapi.cli("set sr encaps source addr a3::")
bsid = "a3::9999:1"
other_src_ip = "b1::"
# configure SRv6 Policy
# Note: segment list order: first -> last
sr_policy = VppSRv6PolicyV2(
self,
bsid=bsid,
is_encap=1,
sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
weight=1,
fib_table=0,
segments=["a4::", "a5::", "a6::c7"],
encap_src=other_src_ip,
source=other_src_ip,
)
sr_policy.add_vpp_config()
self.sr_policy = sr_policy
# log the sr policies
self.logger.info(self.vapi.cli("show sr policies"))
# steer IPv6 traffic to a7::/64 into SRv6 Policy
# use the bsid of the above self.sr_policy
pol_steering = VppSRv6Steering(
self,
bsid=self.sr_policy.bsid,
prefix="a7::",
mask_width=64,
traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
sr_policy_index=0,
table_id=0,
sw_if_index=0,
)
pol_steering.add_vpp_config()
# log the sr steering policies
self.logger.info(self.vapi.cli("show sr steering-policies"))
# create packets
count = len(self.pg_packet_sizes)
dst_inner = "a7::1234"
pkts = []
# create IPv6 packets without SRH
packet_header = self.create_packet_header_IPv6(dst_inner)
# create traffic stream pg0->pg1
pkts.extend(
self.create_stream(
self.pg0, self.pg1, packet_header, self.pg_packet_sizes, count
)
)
# create IPv6 packets with SRH
# packets with segments-left 1, active segment a7::
packet_header = self.create_packet_header_IPv6_SRH(
sidlist=["a8::", "a7::", "a6::"], segleft=1
)
# create traffic stream pg0->pg1
pkts.extend(
self.create_stream(
self.pg0, self.pg1, packet_header, self.pg_packet_sizes, count
)
)
# create IPv6 packets with SRH and IPv6
# packets with segments-left 1, active segment a7::
packet_header = self.create_packet_header_IPv6_SRH_IPv6(
dst_inner, sidlist=["a8::", "a7::", "a6::"], segleft=1
)
# create traffic stream pg0->pg1
pkts.extend(
self.create_stream(
self.pg0, self.pg1, packet_header, self.pg_packet_sizes, count
)
)
# send packets and verify received packets
self.send_and_verify_pkts(
self.pg0, pkts, self.pg1, self.compare_rx_tx_packet_T_Encaps
)
# log the localsid counters
self.logger.info(self.vapi.cli("show sr localsid"))
# remove SR steering
pol_steering.remove_vpp_config()
self.logger.info(self.vapi.cli("show sr steering-policies"))
# remove SR Policies
self.sr_policy.remove_vpp_config()
self.logger.info(self.vapi.cli("show sr policies"))
# remove FIB entries
# done by tearDown
# cleanup interfaces
self.teardown_interfaces()
@unittest.skipUnless(0, "PC to fix")
def test_SRv6_T_Insert(self):
"""Test SRv6 Transit.Insert behavior (IPv6 only)."""