097fa66b98
Enhance the route add/del APIs to take a set of paths rather than just one.
Most unicast routing protocols calcualte all the available paths in one
run of the algorithm so updating all the paths at once is beneficial for the client.
two knobs control the behaviour:
is_multipath - if set the the set of paths passed will be added to those
that already exist, otherwise the set will replace them.
is_add - add or remove the set
is_add=0, is_multipath=1 and an empty set, results in deleting the route.
It is also considerably faster to add multiple paths at once, than one at a time:
vat# ip_add_del_route 1.1.1.1/32 count 100000 multipath via 10.10.10.11
100000 routes in .572240 secs, 174751.80 routes/sec
vat# ip_add_del_route 1.1.1.1/32 count 100000 multipath via 10.10.10.12
100000 routes in .528383 secs, 189256.54 routes/sec
vat# ip_add_del_route 1.1.1.1/32 count 100000 multipath via 10.10.10.13
100000 routes in .757131 secs, 132077.52 routes/sec
vat# ip_add_del_route 1.1.1.1/32 count 100000 multipath via 10.10.10.14
100000 routes in .878317 secs, 113854.12 routes/sec
vat# ip_route_add_del 1.1.1.1/32 count 100000 multipath via 10.10.10.11 via 10.10.10.12 via 10.10.10.13 via 10.10.10.14
100000 routes in .900212 secs, 111084.93 routes/sec
Change-Id: I416b93f7684745099c1adb0b33edac58c9339c1a
Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
Signed-off-by: Ole Troan <ot@cisco.com>
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
264 lines
9.9 KiB
Python
264 lines
9.9 KiB
Python
#!/usr/bin/env python
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import socket
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from util import ip4n_range, ip4_range
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import unittest
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from framework import VppTestCase, VppTestRunner, running_extended_tests
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from template_bd import BridgeDomain
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from scapy.layers.l2 import Ether, Raw
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from scapy.layers.inet import IP, UDP
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from scapy.layers.vxlan import VXLAN
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from scapy.utils import atol
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from vpp_ip_route import VppIpRoute, VppRoutePath
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from vpp_ip import INVALID_INDEX
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@unittest.skipUnless(running_extended_tests, "part of extended tests")
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class TestVxlanGpe(BridgeDomain, VppTestCase):
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""" VXLAN-GPE Test Case """
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def __init__(self, *args):
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BridgeDomain.__init__(self)
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VppTestCase.__init__(self, *args)
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def encapsulate(self, pkt, vni):
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"""
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Encapsulate the original payload frame by adding VXLAN-GPE header
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with its UDP, IP and Ethernet fields
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"""
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return (Ether(src=self.pg0.remote_mac, 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=self.dport, dport=self.dport, chksum=0) /
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VXLAN(vni=vni, flags=self.flags) /
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pkt)
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def ip_range(self, start, end):
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""" range of remote ip's """
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return ip4_range(self.pg0.remote_ip4, start, end)
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def encap_mcast(self, pkt, src_ip, src_mac, vni):
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"""
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Encapsulate the original payload frame by adding VXLAN-GPE header
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with its UDP, IP and Ethernet fields
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"""
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return (Ether(src=src_mac, dst=self.mcast_mac) /
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IP(src=src_ip, dst=self.mcast_ip4) /
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UDP(sport=self.dport, dport=self.dport, chksum=0) /
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VXLAN(vni=vni, flags=self.flags) /
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pkt)
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def decapsulate(self, pkt):
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"""
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Decapsulate the original payload frame by removing VXLAN-GPE header
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"""
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# check if is set I and P flag
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self.assertEqual(pkt[VXLAN].flags, 0x0c)
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return pkt[VXLAN].payload
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# Method for checking VXLAN-GPE encapsulation.
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#
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def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
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# Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
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# by VPP using ARP.
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self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
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if not local_only:
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if not mcast_pkt:
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self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
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else:
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self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
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# Verify VXLAN-GPE tunnel src IP is VPP_IP and dst IP is MY_IP.
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self.assertEqual(pkt[IP].src, self.pg0.local_ip4)
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if not local_only:
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if not mcast_pkt:
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self.assertEqual(pkt[IP].dst, self.pg0.remote_ip4)
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else:
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self.assertEqual(pkt[IP].dst, type(self).mcast_ip4)
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# Verify UDP destination port is VXLAN-GPE 4790, source UDP port
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# could be arbitrary.
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self.assertEqual(pkt[UDP].dport, type(self).dport)
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# Verify VNI
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self.assertEqual(pkt[VXLAN].vni, vni)
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@classmethod
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def create_vxlan_gpe_flood_test_bd(cls, vni, n_ucast_tunnels):
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# Create 10 ucast vxlan tunnels under bd
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ip_range_start = 10
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ip_range_end = ip_range_start + n_ucast_tunnels
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next_hop_address = cls.pg0.remote_ip4
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for dest_ip4 in ip4_range(next_hop_address, ip_range_start,
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ip_range_end):
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# add host route so dest_ip4n will not be resolved
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rip = VppIpRoute(cls, dest_ip4, 32,
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[VppRoutePath(next_hop_address,
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INVALID_INDEX)],
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register=False)
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rip.add_vpp_config()
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dest_ip4n = socket.inet_pton(socket.AF_INET, dest_ip4)
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r = cls.vapi.vxlan_gpe_add_del_tunnel(
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src_addr=cls.pg0.local_ip4n,
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dst_addr=dest_ip4n,
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vni=vni)
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cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
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bd_id=vni)
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@classmethod
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def add_del_shared_mcast_dst_load(cls, is_add):
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"""
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add or del tunnels sharing the same mcast dst
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to test vxlan_gpe ref_count mechanism
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"""
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n_shared_dst_tunnels = 20
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vni_start = 1000
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vni_end = vni_start + n_shared_dst_tunnels
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for vni in range(vni_start, vni_end):
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r = cls.vapi.vxlan_gpe_add_del_tunnel(
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src_addr=cls.pg0.local_ip4n,
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dst_addr=cls.mcast_ip4n,
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mcast_sw_if_index=1,
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vni=vni,
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is_add=is_add)
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if r.sw_if_index == 0xffffffff:
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raise ValueError("bad sw_if_index: ~0")
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@classmethod
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def add_shared_mcast_dst_load(cls):
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cls.add_del_shared_mcast_dst_load(is_add=1)
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@classmethod
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def del_shared_mcast_dst_load(cls):
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cls.add_del_shared_mcast_dst_load(is_add=0)
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@classmethod
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def add_del_mcast_tunnels_load(cls, is_add):
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"""
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add or del tunnels to test vxlan_gpe stability
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"""
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n_distinct_dst_tunnels = 20
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ip_range_start = 10
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ip_range_end = ip_range_start + n_distinct_dst_tunnels
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for dest_ip4n in ip4n_range(cls.mcast_ip4n, ip_range_start,
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ip_range_end):
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vni = bytearray(dest_ip4n)[3]
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cls.vapi.vxlan_gpe_add_del_tunnel(
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src_addr=cls.pg0.local_ip4n,
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dst_addr=dest_ip4n,
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mcast_sw_if_index=1,
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vni=vni,
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is_add=is_add)
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@classmethod
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def add_mcast_tunnels_load(cls):
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cls.add_del_mcast_tunnels_load(is_add=1)
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@classmethod
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def del_mcast_tunnels_load(cls):
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cls.add_del_mcast_tunnels_load(is_add=0)
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# Class method to start the VXLAN-GPE test case.
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# Overrides setUpClass method in VppTestCase class.
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# Python try..except statement is used to ensure that the tear down of
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# the class will be executed even if exception is raised.
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# @param cls The class pointer.
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@classmethod
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def setUpClass(cls):
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super(TestVxlanGpe, cls).setUpClass()
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try:
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cls.dport = 4790
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cls.flags = 0x0c
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# Create 2 pg interfaces.
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cls.create_pg_interfaces(range(4))
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for pg in cls.pg_interfaces:
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pg.admin_up()
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# Configure IPv4 addresses on VPP pg0.
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cls.pg0.config_ip4()
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# Resolve MAC address for VPP's IP address on pg0.
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cls.pg0.resolve_arp()
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# Our Multicast address
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cls.mcast_ip4 = '239.1.1.1'
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cls.mcast_ip4n = socket.inet_pton(socket.AF_INET, cls.mcast_ip4)
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iplong = atol(cls.mcast_ip4)
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cls.mcast_mac = "01:00:5e:%02x:%02x:%02x" % (
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(iplong >> 16) & 0x7F, (iplong >> 8) & 0xFF, iplong & 0xFF)
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# Create VXLAN-GPE VTEP on VPP pg0, and put vxlan_gpe_tunnel0
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# and pg1 into BD.
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cls.single_tunnel_bd = 11
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r = cls.vapi.vxlan_gpe_add_del_tunnel(
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src_addr=cls.pg0.local_ip4n,
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dst_addr=cls.pg0.remote_ip4n,
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vni=cls.single_tunnel_bd)
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cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
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bd_id=cls.single_tunnel_bd)
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cls.vapi.sw_interface_set_l2_bridge(
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rx_sw_if_index=cls.pg1.sw_if_index, bd_id=cls.single_tunnel_bd)
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# Setup vni 2 to test multicast flooding
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cls.n_ucast_tunnels = 10
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cls.mcast_flood_bd = 12
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cls.create_vxlan_gpe_flood_test_bd(cls.mcast_flood_bd,
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cls.n_ucast_tunnels)
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r = cls.vapi.vxlan_gpe_add_del_tunnel(
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src_addr=cls.pg0.local_ip4n,
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dst_addr=cls.mcast_ip4n,
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mcast_sw_if_index=1,
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vni=cls.mcast_flood_bd)
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cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
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bd_id=cls.mcast_flood_bd)
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cls.vapi.sw_interface_set_l2_bridge(
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rx_sw_if_index=cls.pg2.sw_if_index, bd_id=cls.mcast_flood_bd)
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# Add and delete mcast tunnels to check stability
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cls.add_shared_mcast_dst_load()
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cls.add_mcast_tunnels_load()
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cls.del_shared_mcast_dst_load()
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cls.del_mcast_tunnels_load()
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# Setup vni 3 to test unicast flooding
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cls.ucast_flood_bd = 13
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cls.create_vxlan_gpe_flood_test_bd(cls.ucast_flood_bd,
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cls.n_ucast_tunnels)
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cls.vapi.sw_interface_set_l2_bridge(
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rx_sw_if_index=cls.pg3.sw_if_index, bd_id=cls.ucast_flood_bd)
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except Exception:
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super(TestVxlanGpe, cls).tearDownClass()
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raise
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@classmethod
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def tearDownClass(cls):
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super(TestVxlanGpe, cls).tearDownClass()
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@unittest.skip("test disabled for vxlan-gpe")
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def test_mcast_flood(self):
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""" inherited from BridgeDomain """
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pass
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@unittest.skip("test disabled for vxlan-gpe")
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def test_mcast_rcv(self):
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""" inherited from BridgeDomain """
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pass
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# Method to define VPP actions before tear down of the test case.
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# Overrides tearDown method in VppTestCase class.
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# @param self The object pointer.
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def tearDown(self):
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super(TestVxlanGpe, self).tearDown()
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def show_commands_at_teardown(self):
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self.logger.info(self.vapi.cli("show bridge-domain 11 detail"))
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self.logger.info(self.vapi.cli("show bridge-domain 12 detail"))
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self.logger.info(self.vapi.cli("show bridge-domain 13 detail"))
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self.logger.info(self.vapi.cli("show int"))
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self.logger.info(self.vapi.cli("show vxlan-gpe"))
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self.logger.info(self.vapi.cli("show trace"))
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if __name__ == '__main__':
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unittest.main(testRunner=VppTestRunner)
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