udp: add udp decapsulation
Possibility to register a port via CLI or API to decap incoming UDP packets: - For CLI, a user needs to specify the inner protocol (only MPLS supported for now) - For API, the protocol is specified by index Added unittests Type: feature Change-Id: Ifedd86d8db2e355b7618472554fd67d77a13a4aa Signed-off-by: Arthur de Kerhor <arthurdekerhor@gmail.com>
This commit is contained in:
Arthur de Kerhor
committed by
Florin Coras
Florin Coras
parent
b740fdc8ff
commit
8a6f5d394c
148
test/test_udp.py
148
test/test_udp.py
@ -4,12 +4,15 @@ from framework import tag_fixme_vpp_workers
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from framework import VppTestCase, VppTestRunner
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from vpp_udp_encap import find_udp_encap, VppUdpEncap
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from vpp_udp_decap import VppUdpDecap
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from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable, VppMplsLabel, \
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FibPathType
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VppMplsTable, VppMplsRoute, FibPathType, FibPathProto
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from vpp_neighbor import VppNeighbor
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from vpp_papi import VppEnum
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from scapy.packet import Raw
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from scapy.layers.l2 import Ether
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from scapy.layers.inet import IP, UDP
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from scapy.layers.inet import IP, UDP, ICMP
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from scapy.layers.inet6 import IPv6
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from scapy.contrib.mpls import MPLS
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@ -87,10 +90,13 @@ class TestUdpEncap(VppTestCase):
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else:
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self.assertEqual(rx[IP].ttl, tx[IP].ttl)
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def validate_inner6(self, rx, tx):
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def validate_inner6(self, rx, tx, hlim=None):
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self.assertEqual(rx.src, tx[IPv6].src)
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self.assertEqual(rx.dst, tx[IPv6].dst)
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self.assertEqual(rx.hlim, tx[IPv6].hlim)
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if hlim:
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self.assertEqual(rx.hlim, hlim)
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else:
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self.assertEqual(rx.hlim, tx[IPv6].hlim)
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def test_udp_encap(self):
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""" UDP Encap test
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@ -248,6 +254,140 @@ class TestUdpEncap(VppTestCase):
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self.validate_inner4(p, p_4omo4, ttl=63)
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self.assertEqual(udp_encap_1.get_stats()['packets'], 2*NUM_PKTS)
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def test_udp_decap(self):
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""" UDP Decap test
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"""
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#
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# construct a UDP decap object for each type of protocol
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#
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# IPv4
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udp_api_proto = VppEnum.vl_api_udp_decap_next_proto_t
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next_proto = udp_api_proto.UDP_API_DECAP_PROTO_IP4
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udp_decap_0 = VppUdpDecap(self, 1, 220, next_proto)
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# IPv6
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next_proto = udp_api_proto.UDP_API_DECAP_PROTO_IP6
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udp_decap_1 = VppUdpDecap(self, 0, 221, next_proto)
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# MPLS
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next_proto = udp_api_proto.UDP_API_DECAP_PROTO_MPLS
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udp_decap_2 = VppUdpDecap(self, 1, 222, next_proto)
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udp_decap_0.add_vpp_config()
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udp_decap_1.add_vpp_config()
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udp_decap_2.add_vpp_config()
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#
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# Routes via the corresponding pg after the UDP decap
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#
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route_4 = VppIpRoute(
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self, "1.1.1.1", 32,
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[VppRoutePath("0.0.0.0", self.pg0.sw_if_index)],
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table_id=0)
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route_6 = VppIpRoute(
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self, "2001::1", 128,
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[VppRoutePath("::", self.pg1.sw_if_index)],
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table_id=1)
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route_mo4 = VppIpRoute(
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self, "3.3.3.3", 32,
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[VppRoutePath("0.0.0.0", self.pg2.sw_if_index)],
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table_id=2)
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route_4.add_vpp_config()
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route_6.add_vpp_config()
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route_mo4.add_vpp_config()
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#
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# Adding neighbors to route the packets
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#
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n_4 = VppNeighbor(self,
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self.pg0.sw_if_index,
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"00:11:22:33:44:55",
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"1.1.1.1")
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n_6 = VppNeighbor(self,
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self.pg1.sw_if_index,
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"11:22:33:44:55:66",
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"2001::1")
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n_mo4 = VppNeighbor(self,
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self.pg2.sw_if_index,
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"22:33:44:55:66:77",
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"3.3.3.3")
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n_4.add_vpp_config()
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n_6.add_vpp_config()
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n_mo4.add_vpp_config()
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#
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# MPLS decapsulation config
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#
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mpls_table = VppMplsTable(self, 0)
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mpls_table.add_vpp_config()
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mpls_route = VppMplsRoute(
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self, 77, 1,
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[VppRoutePath("0.0.0.0",
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0xFFFFFFFF,
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nh_table_id=2,
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proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)])
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mpls_route.add_vpp_config()
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#
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# UDP over ipv4 decap
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#
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p_4 = (Ether(src=self.pg0.remote_mac,
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dst=self.pg0.local_mac) /
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IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
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UDP(sport=1111, dport=220) /
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IP(src="2.2.2.2", dst="1.1.1.1") /
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UDP(sport=1234, dport=4321) /
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Raw(b'\xa5' * 100))
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rx = self.send_and_expect(self.pg0, p_4*NUM_PKTS, self.pg0)
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p_4 = IP(p_4["UDP"].payload)
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for p in rx:
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p = IP(p["Ether"].payload)
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self.validate_inner4(p, p_4, ttl=63)
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#
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# UDP over ipv6 decap
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#
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p_6 = (Ether(src=self.pg1.remote_mac,
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dst=self.pg1.local_mac) /
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IPv6(src=self.pg1.remote_ip6, dst=self.pg1.local_ip6) /
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UDP(sport=2222, dport=221) /
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IPv6(src="2001::100", dst="2001::1") /
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UDP(sport=1234, dport=4321) /
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Raw(b'\xa5' * 100))
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rx = self.send_and_expect(self.pg1, p_6*NUM_PKTS, self.pg1)
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p_6 = IPv6(p_6["UDP"].payload)
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p = IPv6(rx[0]["Ether"].payload)
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for p in rx:
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p = IPv6(p["Ether"].payload)
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self.validate_inner6(p, p_6, hlim=63)
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#
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# UDP over mpls decap
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#
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p_mo4 = (Ether(src=self.pg2.remote_mac,
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dst=self.pg2.local_mac) /
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IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
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UDP(sport=3333, dport=222) /
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MPLS(label=77, ttl=1) /
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IP(src="4.4.4.4", dst="3.3.3.3") /
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UDP(sport=1234, dport=4321) /
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Raw(b'\xa5' * 100))
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self.pg2.enable_mpls()
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rx = self.send_and_expect(self.pg2, p_mo4*NUM_PKTS, self.pg2)
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self.pg2.disable_mpls()
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p_mo4 = IP(MPLS(p_mo4["UDP"].payload).payload)
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for p in rx:
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p = IP(p["Ether"].payload)
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self.validate_inner4(p, p_mo4, ttl=63)
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@tag_fixme_vpp_workers
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class TestUDP(VppTestCase):
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