Adding upstream version 9.1.upstream/9.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

12 files changed, 286 insertions, 0 deletions

diff --git a/tests/topotests/bgp_llgr/__init__.py b/tests/topotests/bgp_llgr/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/topotests/bgp_llgr/__init__.py
diff --git a/tests/topotests/bgp_llgr/r0/bgpd.conf b/tests/topotests/bgp_llgr/r0/bgpd.conf
new file mode 100644
index 0000000..a20e64f
--- /dev/null
+++ b/tests/topotests/bgp_llgr/r0/bgpd.conf
@@ -0,0 +1,12 @@
+router bgp 65000
+ no bgp ebgp-requires-policy
+ bgp graceful-restart
+ bgp graceful-restart restart-time 0
+ bgp long-lived-graceful-restart stale-time 20
+ neighbor 192.168.0.2 remote-as external
+ neighbor 192.168.0.2 timers 3 10
+ neighbor 192.168.0.2 timers connect 1
+ address-family ipv4 unicast
+  redistribute connected
+ exit-address-family
+!
diff --git a/tests/topotests/bgp_llgr/r0/zebra.conf b/tests/topotests/bgp_llgr/r0/zebra.conf
new file mode 100644
index 0000000..4d11b67
--- /dev/null
+++ b/tests/topotests/bgp_llgr/r0/zebra.conf
@@ -0,0 +1,7 @@
+!
+int lo
+ ip address 172.16.1.1/32
+!
+int r0-eth0
+ ip address 192.168.0.1/24
+!
diff --git a/tests/topotests/bgp_llgr/r1/bgpd.conf b/tests/topotests/bgp_llgr/r1/bgpd.conf
new file mode 100644
index 0000000..bf33eeb
--- /dev/null
+++ b/tests/topotests/bgp_llgr/r1/bgpd.conf
@@ -0,0 +1,12 @@
+router bgp 65001
+ no bgp ebgp-requires-policy
+ bgp graceful-restart
+ bgp graceful-restart restart-time 0
+ bgp long-lived-graceful-restart stale-time 20
+ neighbor 192.168.1.2 remote-as external
+ neighbor 192.168.1.2 timers 3 10
+ neighbor 192.168.1.2 timers connect 1
+ address-family ipv4 unicast
+  redistribute connected
+ exit-address-family
+!
diff --git a/tests/topotests/bgp_llgr/r1/zebra.conf b/tests/topotests/bgp_llgr/r1/zebra.conf
new file mode 100644
index 0000000..1782edc
--- /dev/null
+++ b/tests/topotests/bgp_llgr/r1/zebra.conf
@@ -0,0 +1,7 @@
+!
+int lo
+ ip address 172.16.1.1/32
+!
+int r1-eth0
+ ip address 192.168.1.1/24
+!
diff --git a/tests/topotests/bgp_llgr/r2/bgpd.conf b/tests/topotests/bgp_llgr/r2/bgpd.conf
new file mode 100644
index 0000000..6515ef8
--- /dev/null
+++ b/tests/topotests/bgp_llgr/r2/bgpd.conf
@@ -0,0 +1,18 @@
+router bgp 65002
+ no bgp ebgp-requires-policy
+ bgp graceful-restart
+ bgp long-lived-graceful-restart stale-time 20
+ neighbor 192.168.0.1 remote-as external
+ neighbor 192.168.0.1 timers 3 10
+ neighbor 192.168.0.1 timers connect 1
+ neighbor 192.168.1.1 remote-as external
+ neighbor 192.168.1.1 timers 3 10
+ neighbor 192.168.1.1 timers connect 1
+ neighbor 192.168.2.1 remote-as external
+ neighbor 192.168.2.1 timers 3 10
+ neighbor 192.168.2.1 timers connect 1
+ neighbor PG peer-group
+ neighbor PG remote-as external
+ bgp listen range 192.168.3.0/24 peer-group PG
+ address-family ipv4 unicast
+   neighbor 192.168.1.1 weight 100
diff --git a/tests/topotests/bgp_llgr/r2/zebra.conf b/tests/topotests/bgp_llgr/r2/zebra.conf
new file mode 100644
index 0000000..e5e88d4
--- /dev/null
+++ b/tests/topotests/bgp_llgr/r2/zebra.conf
@@ -0,0 +1,13 @@
+!
+int r2-eth0
+ ip address 192.168.0.2/24
+!
+int r2-eth1
+ ip address 192.168.1.2/24
+!
+int r2-eth2
+ ip address 192.168.2.2/24
+!
+int r2-eth3
+ ip address 192.168.3.2/24
+!
diff --git a/tests/topotests/bgp_llgr/r3/bgpd.conf b/tests/topotests/bgp_llgr/r3/bgpd.conf
new file mode 100644
index 0000000..dfe20c1
--- /dev/null
+++ b/tests/topotests/bgp_llgr/r3/bgpd.conf
@@ -0,0 +1,8 @@
+router bgp 65003
+ bgp router-id 192.168.2.1
+ no bgp ebgp-requires-policy
+ bgp graceful-restart
+ bgp long-lived-graceful-restart stale-time 20
+ neighbor 192.168.2.2 remote-as external
+ neighbor 192.168.2.2 timers 3 10
+ neighbor 192.168.2.2 timers connect 1
diff --git a/tests/topotests/bgp_llgr/r3/zebra.conf b/tests/topotests/bgp_llgr/r3/zebra.conf
new file mode 100644
index 0000000..8a7941b
--- /dev/null
+++ b/tests/topotests/bgp_llgr/r3/zebra.conf
@@ -0,0 +1,4 @@
+!
+int r3-eth0
+ ip address 192.168.2.1/24
+!
diff --git a/tests/topotests/bgp_llgr/r4/bgpd.conf b/tests/topotests/bgp_llgr/r4/bgpd.conf
new file mode 100644
index 0000000..49ce387
--- /dev/null
+++ b/tests/topotests/bgp_llgr/r4/bgpd.conf
@@ -0,0 +1,13 @@
+router bgp 65004
+ bgp router-id 192.168.3.1
+ no bgp ebgp-requires-policy
+ bgp graceful-restart
+ bgp graceful-restart restart-time 0
+ bgp long-lived-graceful-restart stale-time 30
+ neighbor 192.168.3.2 remote-as external
+ neighbor 192.168.3.2 timers 3 10
+ neighbor 192.168.3.2 timers connect 1
+ address-family ipv4 unicast
+  redistribute connected
+ exit-address-family
+!
diff --git a/tests/topotests/bgp_llgr/r4/zebra.conf b/tests/topotests/bgp_llgr/r4/zebra.conf
new file mode 100644
index 0000000..7ec20be
--- /dev/null
+++ b/tests/topotests/bgp_llgr/r4/zebra.conf
@@ -0,0 +1,7 @@
+!
+int lo
+ ip address 172.16.1.2/32
+!
+int r4-eth0
+ ip address 192.168.3.1/24
+!
diff --git a/tests/topotests/bgp_llgr/test_bgp_llgr.py b/tests/topotests/bgp_llgr/test_bgp_llgr.py
new file mode 100644
index 0000000..d604871
--- /dev/null
+++ b/tests/topotests/bgp_llgr/test_bgp_llgr.py
@@ -0,0 +1,185 @@
+#!/usr/bin/env python
+# SPDX-License-Identifier: ISC
+
+# Copyright (c) 2021 by
+# Donatas Abraitis <donatas.abraitis@gmail.com>
+#
+
+"""
+Test if BGP Long-lived Graceful Restart capability works:
+    Check if we can see 172.16.1.1/32 after initial converge in R3.
+    Check if we can see 172.16.1.1/32 as best selected due to higher weigth in R2.
+    Kill bgpd in R1.
+    Check if we can see 172.16.1.1/32 as stale in R2.
+    Check if we can see 172.16.1.1/32 depreferenced due to LLGR_STALE in R2.
+    Check if we can see 172.16.1.1/32 after R1 was killed in R3.
+"""
+
+import os
+import sys
+import json
+import pytest
+import functools
+
+pytestmark = [pytest.mark.bgpd]
+
+CWD = os.path.dirname(os.path.realpath(__file__))
+sys.path.append(os.path.join(CWD, "../"))
+
+# pylint: disable=C0413
+from lib import topotest
+from lib.topogen import Topogen, TopoRouter, get_topogen
+
+from lib.common_config import (
+    kill_router_daemons,
+    start_router_daemons,
+    step,
+)
+
+pytestmark = [pytest.mark.bgpd]
+
+
+def build_topo(tgen):
+    for routern in range(0, 6):
+        tgen.add_router("r{}".format(routern))
+
+    switch = tgen.add_switch("s0")
+    switch.add_link(tgen.gears["r0"])
+    switch.add_link(tgen.gears["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["r2"])
+    switch.add_link(tgen.gears["r3"])
+
+    # Dynamic neighbor
+    switch = tgen.add_switch("s3")
+    switch.add_link(tgen.gears["r2"])
+    switch.add_link(tgen.gears["r4"])
+
+
+def setup_module(mod):
+    tgen = Topogen(build_topo, mod.__name__)
+    tgen.start_topology()
+
+    router_list = tgen.routers()
+
+    for i, (rname, router) in enumerate(router_list.items(), 1):
+        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))
+        )
+
+    tgen.start_router()
+
+
+def teardown_module(mod):
+    tgen = get_topogen()
+    tgen.stop_topology()
+
+
+def test_bgp_llgr():
+    tgen = get_topogen()
+
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    r2 = tgen.gears["r2"]
+    r3 = tgen.gears["r3"]
+
+    def _bgp_converge(router):
+        output = json.loads(router.vtysh_cmd("show ip bgp json"))
+        expected = {
+            "routes": {
+                "172.16.1.1/32": [{"nexthops": [{"ip": "192.168.2.2", "used": True}]}],
+                "172.16.1.2/32": [{"nexthops": [{"ip": "192.168.2.2", "used": True}]}],
+            }
+        }
+        return topotest.json_cmp(output, expected)
+
+    step("Check if we can see 172.16.1.1/32 after initial converge in R3")
+    test_func = functools.partial(_bgp_converge, r3)
+    _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+    assert result is None, "Cannot see 172.16.1.1/32 in r3"
+
+    def _bgp_weight_prefered_route(router):
+        output = json.loads(router.vtysh_cmd("show ip bgp 172.16.1.1/32 json"))
+        expected = {
+            "paths": [
+                {
+                    "bestpath": {"selectionReason": "Weight"},
+                    "nexthops": [
+                        {
+                            "ip": "192.168.1.1",
+                        }
+                    ],
+                }
+            ]
+        }
+        return topotest.json_cmp(output, expected)
+
+    step(
+        "Check if we can see 172.16.1.1/32 as best selected due to higher weigth in R2"
+    )
+    test_func = functools.partial(_bgp_weight_prefered_route, r2)
+    _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+    assert (
+        result is None
+    ), "Prefix 172.16.1.1/32 is not selected as bests path due to weight"
+
+    step("Kill bgpd in R1")
+    kill_router_daemons(tgen, "r1", ["bgpd"])
+
+    def _bgp_stale_route(router, prefix):
+        output = json.loads(router.vtysh_cmd("show ip bgp {} json".format(prefix)))
+        expected = {"paths": [{"community": {"string": "llgr-stale"}, "stale": True}]}
+        return topotest.json_cmp(output, expected)
+
+    step("Check if we can see 172.16.1.1/32 as stale in R2")
+    test_func = functools.partial(_bgp_stale_route, r2, "172.16.1.1/32")
+    _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+    assert result is None, "Prefix 172.16.1.1/32 is not stale"
+
+    def _bgp_llgr_depreference_route(router):
+        output = json.loads(router.vtysh_cmd("show ip bgp 172.16.1.1/32 json"))
+        expected = {
+            "paths": [
+                {
+                    "bestpath": {"selectionReason": "First path received"},
+                    "nexthops": [
+                        {
+                            "ip": "192.168.0.1",
+                        }
+                    ],
+                }
+            ]
+        }
+        return topotest.json_cmp(output, expected)
+
+    step("Check if we can see 172.16.1.1/32 depreferenced due to LLGR_STALE in R2")
+    test_func = functools.partial(_bgp_llgr_depreference_route, r2)
+    _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+    assert result is None, "Prefix 172.16.1.1/32 is not depreferenced due to LLGR_STALE"
+
+    step("Check if we can see 172.16.1.1/32 after R1 was killed in R3")
+    test_func = functools.partial(_bgp_converge, r3)
+    _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
+    assert result is None, "Cannot see 172.16.1.1/32 in r3"
+
+    step("Kill bgpd in R4 (dynamic peer)")
+    kill_router_daemons(tgen, "r4", ["bgpd"])
+
+    step("Check if we can see 172.16.1.2/32 after R4 (dynamic peer) was killed")
+    test_func = functools.partial(_bgp_stale_route, r2, "172.16.1.2/32")
+    _, result = topotest.run_and_expect(test_func, None, count=120, wait=0.5)
+    assert result is None, "Cannot see 172.16.1.2/32 in r2"
+
+
+if __name__ == "__main__":
+    args = ["-s"] + sys.argv[1:]
+    sys.exit(pytest.main(args))