topotests: add bgp_evpn_rt5 test with vrf netns backend

this test checks connectivity between a vrf-lite device and a vrf-netns
device. this ensures that evpn serice is importing appropriate evpn rt5
entries in the correct vrf.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>

6 files changed, 320 insertions, 0 deletions

diff --git a/tests/topotests/bgp_evpn_rt5/__init__.py b/tests/topotests/bgp_evpn_rt5/__init__.py
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/tests/topotests/bgp_evpn_rt5/__init__.py
diff --git a/tests/topotests/bgp_evpn_rt5/r1/bgpd.conf b/tests/topotests/bgp_evpn_rt5/r1/bgpd.conf
new file mode 100644
index 000000000..923768206
--- /dev/null
+++ b/tests/topotests/bgp_evpn_rt5/r1/bgpd.conf
@@ -0,0 +1,26 @@
+debug bgp neighbor-events
+debug bgp updates
+debug bgp zebra
+router bgp 65000
+ bgp router-id 192.168.100.21
+ bgp log-neighbor-changes
+ no bgp default ipv4-unicast
+ neighbor 192.168.100.41 remote-as 65000
+ neighbor 192.168.100.41 capability extended-nexthop
+ !
+ address-family l2vpn evpn
+  neighbor 192.168.100.41 activate
+  advertise-all-vni
+ exit-address-family
+!
+router bgp 65000 vrf r1-vrf-101
+ bgp router-id 192.168.102.21
+ bgp log-neighbor-changes
+ no bgp network import-check
+ address-family ipv4 unicast
+  network 192.168.102.21/32
+ exit-address-family
+ address-family l2vpn evpn
+  advertise ipv4 unicast
+ exit-address-family
+ !
diff --git a/tests/topotests/bgp_evpn_rt5/r1/zebra.conf b/tests/topotests/bgp_evpn_rt5/r1/zebra.conf
new file mode 100644
index 000000000..f5eaab195
--- /dev/null
+++ b/tests/topotests/bgp_evpn_rt5/r1/zebra.conf
@@ -0,0 +1,22 @@
+log stdout
+
+hostname r1
+password zebra
+
+debug zebra vxlan
+debug zebra kernel
+debug zebra dplane
+debug zebra rib
+log stdout
+vrf r1-vrf-101
+ vni 101
+ exit-vrf
+!
+interface r1-eth0
+ ip address 192.168.100.21/24
+!
+interface loop101 vrf r1-vrf-101
+ ip address 192.168.102.21/32
+!
+
+
diff --git a/tests/topotests/bgp_evpn_rt5/r2/bgpd.conf b/tests/topotests/bgp_evpn_rt5/r2/bgpd.conf
new file mode 100644
index 000000000..6dcacd288
--- /dev/null
+++ b/tests/topotests/bgp_evpn_rt5/r2/bgpd.conf
@@ -0,0 +1,27 @@
+debug bgp neighbor-events
+debug bgp updates
+debug bgp zebra
+router bgp 65000
+ bgp router-id 192.168.100.41
+ bgp log-neighbor-changes
+ no bgp default ipv4-unicast
+ neighbor 192.168.100.21 peer-group
+ neighbor 192.168.100.21 remote-as 65000
+ neighbor 192.168.100.21 capability extended-nexthop
+ !
+ address-family l2vpn evpn
+  neighbor 192.168.100.21 activate
+  advertise-all-vni
+ exit-address-family
+!
+router bgp 65000 vrf r2-vrf-101
+ bgp router-id 192.168.101.41
+ bgp log-neighbor-changes
+ no bgp network import-check
+ address-family ipv4 unicast
+  network 192.168.101.41/32
+ exit-address-family
+ address-family l2vpn evpn
+  advertise ipv4 unicast
+ exit-address-family
+ !
diff --git a/tests/topotests/bgp_evpn_rt5/r2/zebra.conf b/tests/topotests/bgp_evpn_rt5/r2/zebra.conf
new file mode 100644
index 000000000..e5f962d25
--- /dev/null
+++ b/tests/topotests/bgp_evpn_rt5/r2/zebra.conf
@@ -0,0 +1,18 @@
+log stdout
+
+hostname r2
+password zebra
+
+debug zebra vxlan
+
+vrf r2-vrf-101
+ vni 101
+ exit-vrf
+!
+interface loop101 vrf r2-vrf-101
+ ip address 192.168.101.41/32
+!
+interface r2-eth0
+ ip address 192.168.100.41/24
+!
+
diff --git a/tests/topotests/bgp_evpn_rt5/test_bgp_evpn.py b/tests/topotests/bgp_evpn_rt5/test_bgp_evpn.py
new file mode 100755
index 000000000..086dcd8cc
--- /dev/null
+++ b/tests/topotests/bgp_evpn_rt5/test_bgp_evpn.py
@@ -0,0 +1,227 @@
+#!/usr/bin/env python
+
+#
+# test_bgp_evpn.py
+# Part of NetDEF Topology Tests
+#
+# Copyright (c) 2019 by 6WIND
+#
+# Permission to use, copy, modify, and/or distribute this software
+# for any purpose with or without fee is hereby granted, provided
+# that the above copyright notice and this permission notice appear
+# in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
+# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+# OF THIS SOFTWARE.
+#
+
+"""
+ test_bgp_evpn.py: Test the FRR/Quagga BGP daemon with BGP IPv6 interface
+ with route advertisements on a separate netns.
+"""
+
+import os
+import sys
+import json
+from functools import partial
+import pytest
+import platform
+
+# Save the Current Working Directory to find configuration files.
+CWD = os.path.dirname(os.path.realpath(__file__))
+sys.path.append(os.path.join(CWD, '../'))
+
+# pylint: disable=C0413
+# Import topogen and topotest helpers
+from lib import topotest
+from lib.topogen import Topogen, TopoRouter, get_topogen
+from lib.topolog import logger
+
+# Required to instantiate the topology builder class.
+from mininet.topo import Topo
+
+l3mdev_accept = 0
+
+class BGPEVPNTopo(Topo):
+    "Test topology builder"
+    def build(self, *_args, **_opts):
+        "Build function"
+        tgen = get_topogen(self)
+
+        tgen.add_router('r1')
+        tgen.add_router('r2')
+
+        switch = tgen.add_switch('s1')
+        switch.add_link(tgen.gears['r1'])
+        switch.add_link(tgen.gears['r2'])
+
+        switch = tgen.add_switch('s2')
+        switch.add_link(tgen.gears['r1'])
+
+        switch = tgen.add_switch('s3')
+        switch.add_link(tgen.gears['r2'])
+        
+def setup_module(mod):
+    "Sets up the pytest environment"
+    global l3mdev_accept
+
+    tgen = Topogen(BGPEVPNTopo, mod.__name__)
+    tgen.start_topology()
+
+    router_list = tgen.routers()
+
+    l3mdev_accept = 1
+    logger.info('setting net.ipv4.tcp_l3mdev_accept={}'.format(l3mdev_accept))
+
+    # create VRF vrf-101 on R1 and R2
+    # create loop101
+    cmds_vrflite = ['sysctl -w net.ipv4.tcp_l3mdev_accept={}'.format(l3mdev_accept),
+                    'ip link add {}-vrf-101 type vrf table 101',
+                    'ip ru add oif {}-vrf-101 table 101',
+                    'ip ru add iif {}-vrf-101 table 101',
+                    'ip link set dev {}-vrf-101 up',
+                    'sysctl -w net.ipv4.tcp_l3mdev_accept={}'.format(l3mdev_accept),
+                    'ip link add loop101 type dummy',
+                    'ip link set dev loop101 master {}-vrf-101',
+                    'ip link set dev loop101 up']
+    cmds_netns = ['ip netns add {}-vrf-101',
+                  'ip link add loop101 type dummy',
+                  'ip link set dev loop101 netns {}-vrf-101',
+                  'ip netns exec {}-vrf-101 ip link set dev loop101 up']
+
+    cmds_r2 = [ # config routing 101
+               'ip link add name bridge-101 up type bridge stp_state 0',
+               'ip link set bridge-101 master {}-vrf-101',
+               'ip link set dev bridge-101 up',
+               'ip link add name vxlan-101 type vxlan id 101 dstport 4789 dev r2-eth0 local 192.168.100.41',
+               'brctl addif bridge-101 vxlan-101',
+               'ip link set vxlan-101 up type bridge_slave learning off flood off mcast_flood off']
+
+    cmds_r1_netns_method3 = ['ip link add name vxlan-{1} type vxlan id {1} dstport 4789 dev {0}-eth0 local 192.168.100.21',
+                             'ip link set dev vxlan-{1} netns {0}-vrf-{1}',
+                             'ip netns exec {0}-vrf-{1} ip li set dev lo up',
+                             'ip netns exec {0}-vrf-{1} brctl addbr bridge-{1}',
+                             'ip netns exec {0}-vrf-{1} brctl addif bridge-{1} vxlan-{1}',
+                             'ip netns exec {0}-vrf-{1} ip link set bridge-{1} up',
+                             'ip netns exec {0}-vrf-{1} ip link set vxlan-{1} up']
+
+    router = tgen.gears['r1']
+    for cmd in cmds_netns:
+        logger.info('cmd to r1: '+cmd);
+        output = router.run(cmd.format('r1'))
+        logger.info('result: '+output);
+
+    router = tgen.gears['r2']
+    for cmd in cmds_vrflite:
+        logger.info('cmd to r2: '+cmd.format('r2'));
+        output = router.run(cmd.format('r2'))
+        logger.info('result: '+output);
+
+    for cmd in cmds_r2:
+        logger.info('cmd to r2: '+cmd.format('r2'));
+        output = router.run(cmd.format('r2'))
+        logger.info('result: '+output);
+
+    router = tgen.gears['r1']
+    bridge_id = '101'
+    for cmd in cmds_r1_netns_method3:
+        logger.info('cmd to r1: '+cmd.format('r1', bridge_id));
+        output = router.run(cmd.format('r1', bridge_id))
+        logger.info('result: '+output);
+    router = tgen.gears['r1']
+
+    for rname, router in router_list.iteritems():
+        if rname == 'r1':
+            router.load_config(
+                TopoRouter.RD_ZEBRA,
+                os.path.join(CWD, '{}/zebra.conf'.format(rname)),
+                '--vrfwnetns -o vrf0'
+            )
+        else:
+            router.load_config(
+                TopoRouter.RD_ZEBRA,
+                os.path.join(CWD, '{}/zebra.conf'.format(rname))
+            )
+        router.load_config(
+            TopoRouter.RD_BGP,
+            os.path.join(CWD, '{}/bgpd.conf'.format(rname))
+        )
+
+    # Initialize all routers.
+    tgen.start_router()
+
+def teardown_module(_mod):
+    "Teardown the pytest environment"
+    tgen = get_topogen()
+    cmds_rx_netns = ['ip netns del {}-vrf-101']
+    
+    router = tgen.gears['r1']
+    for cmd in cmds_rx_netns:
+        logger.info('cmd to r1: '+cmd.format('r1'));
+        output = router.run(cmd.format('r1'))
+    tgen.stop_topology()
+
+
+def test_protocols_convergence():
+    """
+    Assert that all protocols have converged
+    statuses as they depend on it.
+    """
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+    topotest.sleep(4, 'waiting 4 seconds for bgp convergence')
+    # Check IPv4/IPv6 routing tables.
+    output = tgen.gears['r1'].vtysh_cmd('show bgp l2vpn evpn', isjson=False)
+    logger.info('==== result from show bgp l2vpn evpn')
+    logger.info(output)
+    output = tgen.gears['r1'].vtysh_cmd('show bgp l2vpn evpn route detail', isjson=False)
+    logger.info('==== result from show bgp l2vpn evpn route detail')
+    logger.info(output)
+    output = tgen.gears['r1'].vtysh_cmd('show bgp vrf r1-vrf-101 ipv4', isjson=False)
+    logger.info('==== result from show bgp vrf r1-vrf-101 ipv4')
+    logger.info(output)
+    output = tgen.gears['r1'].vtysh_cmd('show bgp vrf r1-vrf-101', isjson=False)
+    logger.info('==== result from show bgp vrf r1-vrf-101 ')
+    logger.info(output)
+    output = tgen.gears['r1'].vtysh_cmd('show ip route vrf r1-vrf-101', isjson=False)
+    logger.info('==== result from show ip route vrf r1-vrf-101')
+    logger.info(output)
+    output = tgen.gears['r1'].vtysh_cmd('show evpn vni detail', isjson=False)
+    logger.info('==== result from show evpn vni detail')
+    logger.info(output)
+    output = tgen.gears['r1'].vtysh_cmd('show evpn next-hops vni all', isjson=False)
+    logger.info('==== result from show evpn next-hops vni all')
+    logger.info(output)
+    output = tgen.gears['r1'].vtysh_cmd('show evpn rmac vni all', isjson=False)
+    logger.info('==== result from show evpn next-hops vni all')
+    logger.info(output)
+    # Check IPv4 and IPv6 connectivity between r1 and r2 ( routing vxlan evpn)
+    pingrouter = tgen.gears['r1']
+    logger.info('Check Ping IPv4 from  R1(r1-vrf-101) to R2(r2-vrf-101 = 192.168.101.41)')
+    output = pingrouter.run('ip netns exec r1-vrf-101 ping 192.168.101.41 -f -c 1000')
+    logger.info(output)
+    if '1000 packets transmitted, 1000 received' not in output:
+        assertmsg = 'expected ping IPv4 from R1(r1-vrf-101) to R2(192.168.101.41) should be ok'
+        assert 0, assertmsg
+    else:
+        logger.info('Check Ping IPv4 from R1(r1-vrf-101) to R2(192.168.101.41) OK')
+
+def test_memory_leak():
+    "Run the memory leak test and report results."
+    tgen = get_topogen()
+    if not tgen.is_memleak_enabled():
+        pytest.skip('Memory leak test/report is disabled')
+
+    tgen.report_memory_leaks()
+
+
+if __name__ == '__main__':
+    args = ["-s"] + sys.argv[1:]
+    sys.exit(pytest.main(args))