def bier_e2e(self, hdr_len_id, n_bytes, max_bp):
""" BIER end-to-end"""
#
# Add a BIER table for sub-domain 0, set 0, and BSL 256
#
bti = VppBierTableID(0, 0, hdr_len_id)
bt = VppBierTable(self, bti, 77)
bt.add_vpp_config()
lowest = [b'\0'] * (n_bytes)
lowest[-1] = scapy.compat.chb(1)
highest = [b'\0'] * (n_bytes)
highest[0] = scapy.compat.chb(128)
#
# Impostion Sets bit strings
#
bi_low = VppBierImp(self, bti, 333, lowest)
bi_low.add_vpp_config()
bi_high = VppBierImp(self, bti, 334, highest)
bi_high.add_vpp_config()
#
# Add a multicast route that will forward into the BIER doamin
#
route_ing_232_1_1_1 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.1",
32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
paths=[
VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
VppMRoutePath(0xffffffff,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
type=FibPathType.FIB_PATH_TYPE_BIER_IMP,
bier_imp=bi_low.bi_index)
])
route_ing_232_1_1_1.add_vpp_config()
route_ing_232_1_1_2 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.2",
32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
paths=[
VppMRoutePath(self.pg0.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
VppMRoutePath(0xffffffff,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
type=FibPathType.FIB_PATH_TYPE_BIER_IMP,
bier_imp=bi_high.bi_index)
])
route_ing_232_1_1_2.add_vpp_config()
#
# disposition table 8
#
bdt = VppBierDispTable(self, 8)
bdt.add_vpp_config()
#
# BIER routes in table that are for-us, resolving through
# disp table 8.
#
bier_route_1 = VppBierRoute(self, bti, 1, [
VppRoutePath("0.0.0.0",
0xffffffff,
proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
nh_table_id=8)
])
bier_route_1.add_vpp_config()
bier_route_max = VppBierRoute(self, bti, max_bp, [
VppRoutePath("0.0.0.0",
0xffffffff,
proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
nh_table_id=8)
])
bier_route_max.add_vpp_config()
#
# An entry in the disposition table for sender 333
# lookup in VRF 10
#
bier_de_1 = VppBierDispEntry(self,
bdt.id,
333,
BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4,
FibPathProto.FIB_PATH_NH_PROTO_BIER,
"0.0.0.0",
10,
rpf_id=8192)
bier_de_1.add_vpp_config()
bier_de_1 = VppBierDispEntry(self,
bdt.id,
334,
BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4,
FibPathProto.FIB_PATH_NH_PROTO_BIER,
"0.0.0.0",
10,
rpf_id=8193)
bier_de_1.add_vpp_config()
#
# Add a multicast routes that will forward the traffic
# post-disposition
#
route_eg_232_1_1_1 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.1",
32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
table_id=10,
paths=[
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)
])
route_eg_232_1_1_1.add_vpp_config()
route_eg_232_1_1_1.update_rpf_id(8192)
route_eg_232_1_1_2 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.2",
32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
table_id=10,
paths=[
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)
])
route_eg_232_1_1_2.add_vpp_config()
route_eg_232_1_1_2.update_rpf_id(8193)
#
# inject a packet in VRF-0. We expect it to be BIER encapped,
# replicated, then hit the disposition and be forwarded
# out of VRF 10, i.e. on pg1
#
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src="1.1.1.1", dst="232.1.1.1") / UDP(sport=1234, dport=1234) /
Raw(scapy.compat.chb(5) * 32))
rx = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg1)
self.assertEqual(rx[0][IP].src, "1.1.1.1")
self.assertEqual(rx[0][IP].dst, "232.1.1.1")
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src="1.1.1.1", dst="232.1.1.2") / UDP(sport=1234, dport=1234) /
Raw(scapy.compat.chb(5) * 512))
rx = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg1)
self.assertEqual(rx[0][IP].src, "1.1.1.1")
self.assertEqual(rx[0][IP].dst, "232.1.1.2")
def test_bier_tail_o_udp(self):
"""BIER Tail over UDP"""
#
# Add a BIER table for sub-domain 0, set 0, and BSL 256
#
bti = VppBierTableID(1, 0, BIERLength.BIER_LEN_256)
bt = VppBierTable(self, bti, MPLS_LABEL_INVALID)
bt.add_vpp_config()
#
# disposition table
#
bdt = VppBierDispTable(self, 8)
bdt.add_vpp_config()
#
# BIER route in table that's for-us
#
bier_route_1 = VppBierRoute(self, bti, 1, [
VppRoutePath("0.0.0.0",
0xffffffff,
proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
nh_table_id=8)
])
bier_route_1.add_vpp_config()
#
# An entry in the disposition table
#
bier_de_1 = VppBierDispEntry(self,
bdt.id,
99,
BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4,
FibPathProto.FIB_PATH_NH_PROTO_BIER,
"0.0.0.0",
0,
rpf_id=8192)
bier_de_1.add_vpp_config()
#
# A multicast route to forward post BIER disposition
#
route_eg_232_1_1_1 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.1",
32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
paths=[
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)
])
route_eg_232_1_1_1.add_vpp_config()
route_eg_232_1_1_1.update_rpf_id(8192)
#
# A packet with all bits set gets spat out to BP:1
#
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
UDP(sport=333, dport=8138) / BIFT(sd=1, set=0, bsl=2, ttl=255) /
BIER(length=BIERLength.BIER_LEN_256,
BitString=scapy.compat.chb(255) * 32,
BFRID=99) / IP(src="1.1.1.1", dst="232.1.1.1") /
UDP(sport=1234, dport=1234) / Raw())
rx = self.send_and_expect(self.pg0, [p], self.pg1)
def test_bier_tail(self):
"""BIER Tail"""
#
# Add a BIER table for sub-domain 0, set 0, and BSL 256
#
bti = VppBierTableID(0, 0, BIERLength.BIER_LEN_256)
bt = VppBierTable(self, bti, 77)
bt.add_vpp_config()
#
# disposition table
#
bdt = VppBierDispTable(self, 8)
bdt.add_vpp_config()
#
# BIER route in table that's for-us
#
bier_route_1 = VppBierRoute(self, bti, 1, [
VppRoutePath("0.0.0.0",
0xffffffff,
proto=FibPathProto.FIB_PATH_NH_PROTO_BIER,
nh_table_id=8)
])
bier_route_1.add_vpp_config()
#
# An entry in the disposition table
#
bier_de_1 = VppBierDispEntry(self,
bdt.id,
99,
BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4,
FibPathProto.FIB_PATH_NH_PROTO_BIER,
"0.0.0.0",
0,
rpf_id=8192)
bier_de_1.add_vpp_config()
#
# A multicast route to forward post BIER disposition
#
route_eg_232_1_1_1 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.1",
32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
paths=[
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)
])
route_eg_232_1_1_1.add_vpp_config()
route_eg_232_1_1_1.update_rpf_id(8192)
#
# A packet with all bits set gets spat out to BP:1
#
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
MPLS(label=77, ttl=255) /
BIER(length=BIERLength.BIER_LEN_256,
BitString=scapy.compat.chb(255) * 32,
BFRID=99) / IP(src="1.1.1.1", dst="232.1.1.1") /
UDP(sport=1234, dport=1234) / Raw())
self.send_and_expect(self.pg0, [p], self.pg1)
#
# A packet that does not match the Disposition entry gets dropped
#
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
MPLS(label=77, ttl=255) /
BIER(length=BIERLength.BIER_LEN_256,
BitString=scapy.compat.chb(255) * 32,
BFRID=77) / IP(src="1.1.1.1", dst="232.1.1.1") /
UDP(sport=1234, dport=1234) / Raw())
self.send_and_assert_no_replies(self.pg0, p * 2,
"no matching disposition entry")
#
# Add the default route to the disposition table
#
bier_de_2 = VppBierDispEntry(self,
bdt.id,
0,
BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4,
FibPathProto.FIB_PATH_NH_PROTO_BIER,
"0.0.0.0",
0,
rpf_id=8192)
bier_de_2.add_vpp_config()
#
# now the previous packet is forwarded
#
self.send_and_expect(self.pg0, [p], self.pg1)
#
# A multicast route to forward post BIER disposition that needs
# a check against sending back into the BIER core
#
bi = VppBierImp(self, bti, 333, scapy.compat.chb(0x3) * 32)
bi.add_vpp_config()
route_eg_232_1_1_2 = VppIpMRoute(
self,
"0.0.0.0",
"232.1.1.2",
32,
MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
paths=[
VppMRoutePath(0xffffffff,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD,
proto=DpoProto.DPO_PROTO_BIER,
type=FibPathType.FIB_PATH_TYPE_BIER_IMP,
bier_imp=bi.bi_index),
VppMRoutePath(self.pg1.sw_if_index,
MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)
])
route_eg_232_1_1_2.add_vpp_config()
route_eg_232_1_1_2.update_rpf_id(8192)
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
MPLS(label=77, ttl=255) /
BIER(length=BIERLength.BIER_LEN_256,
BitString=scapy.compat.chb(255) * 32,
BFRID=77) / IP(src="1.1.1.1", dst="232.1.1.2") /
UDP(sport=1234, dport=1234) / Raw())
self.send_and_expect(self.pg0, [p], self.pg1)