1 files changed, 306 insertions, 0 deletions
diff --git a/tests/topotests/bgp_redistribute_table/test_bgp_redistribute_table.py b/tests/topotests/bgp_redistribute_table/test_bgp_redistribute_table.py
new file mode 100644
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+++ b/tests/topotests/bgp_redistribute_table/test_bgp_redistribute_table.py
@@ -0,0 +1,306 @@
+#!/usr/bin/env python
+# SPDX-License-Identifier: ISC
+
+#
+# test_bgp_redistribute_table.py
+# Part of NetDEF Topology Tests
+#
+# Copyright (c) 2023 by 6WIND
+#
+
+"""
+ test_bgp_redistribute_table.py: Test the FRR BGP daemon with 'redistribute table-direct'
+"""
+
+import os
+import sys
+import json
+from functools import partial
+import pytest
+
+# 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.common_config import step
+from lib.topogen import Topogen, TopoRouter, get_topogen
+from lib.topolog import logger
+
+# Required to instantiate the topology builder class.
+
+
+pytestmark = [pytest.mark.bgpd]
+
+
+def build_topo(tgen):
+    "Build function"
+
+    # Create 2 routers.
+    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"
+    tgen = Topogen(build_topo, mod.__name__)
+    tgen.start_topology()
+
+    router_list = tgen.routers()
+
+    for rname, router in router_list.items():
+        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()
+
+    tgen.stop_topology()
+
+
+def _router_json_cmp_exact_filter(router, cmd, expected):
+    output = router.vtysh_cmd(cmd)
+    logger.info("{}: {}\n{}".format(router.name, cmd, output))
+
+    json_output = json.loads(output)
+
+    # filter out tableVersion, version, nhVrfId and vrfId
+    for route, attrs in json_output.items():
+        for attr in attrs:
+            if "table" in attr:
+                attr.pop("table")
+            if "internalStatus" in attr:
+                attr.pop("internalStatus")
+            if "internalFlags" in attr:
+                attr.pop("internalFlags")
+            if "internalNextHopNum" in attr:
+                attr.pop("internalNextHopNum")
+            if "internalNextHopActiveNum" in attr:
+                attr.pop("internalNextHopActiveNum")
+            if "nexthopGroupId" in attr:
+                attr.pop("nexthopGroupId")
+            if "installedNexthopGroupId" in attr:
+                attr.pop("installedNexthopGroupId")
+            if "uptime" in attr:
+                attr.pop("uptime")
+            if "prefixLen" in attr:
+                attr.pop("prefixLen")
+            if "asPath" in attr:
+                attr.pop("asPath")
+            for nexthop in attr.get("nexthops", []):
+                if "flags" in nexthop:
+                    nexthop.pop("flags")
+                if "interfaceIndex" in nexthop:
+                    nexthop.pop("interfaceIndex")
+
+    return topotest.json_cmp(json_output, expected, exact=True)
+
+
+def _check_zebra_rib_r1(with_redistributed_route, with_second_route=False):
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    with_str = "" if with_redistributed_route else "out"
+
+    router = tgen.gears["r1"]
+    if with_redistributed_route:
+        with_str = ""
+        if with_second_route:
+            json_file = "{}/{}/ipv4_routes_with_all_redistribute.json".format(
+                CWD, router.name
+            )
+        else:
+            json_file = "{}/{}/ipv4_routes_with_redistribute.json".format(
+                CWD, router.name
+            )
+    else:
+        with_str = "out"
+        json_file = "{}/{}/ipv4_routes_without_redistribute.json".format(
+            CWD, router.name
+        )
+
+    step(f"Checking IPv4 routes for convergence on r1 with{with_str} kernel route")
+    expected = json.loads(open(json_file).read())
+    test_func = partial(
+        _router_json_cmp_exact_filter,
+        router,
+        "show ip route bgp json",
+        expected,
+    )
+    _, result = topotest.run_and_expect(test_func, None, count=10, wait=0.5)
+    assertmsg = '"{}" JSON output mismatches'.format(router.name)
+    assert result is None, assertmsg
+
+
+def _test_add_and_check_kernel_route_on_table_2200():
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    router_list = tgen.routers()
+
+    step("r2, adding new kernel route 172.31.0.10/32 on table 2200")
+    cmd = "ip route add 172.31.0.10/32 via 172.31.1.10 table 2200"
+    tgen.net["r2"].cmd(cmd)
+
+    _check_zebra_rib_r1(True)
+
+
+def test_step1_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)
+
+    logger.info("Checking IPv4 routes for convergence on r1")
+    _check_zebra_rib_r1(False)
+
+
+def test_step2_add_kernel_route_on_table_2200():
+    """
+    On r2, create a kernel route on table 2200
+    * Check that the kernel route is redistributed to r1
+    """
+    _test_add_and_check_kernel_route_on_table_2200()
+
+
+def test_step3_remove_kernel_route_on_table_2200():
+    """
+    On r2, remove a kernel route on table 2200
+    * Check that the kernel route is no more redistributed to r1
+    """
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    router_list = tgen.routers()
+
+    step("r2, remove a kernel route on table 2200")
+    cmd = "ip route delete 172.31.0.10/32 via 172.31.1.10 table 2200"
+    tgen.net["r2"].cmd(cmd)
+
+    _check_zebra_rib_r1(False)
+
+
+def test_step4_add_kernel_route_on_table_2200():
+    """
+    On r2, add a kernel route on table 2200
+    * Check that the kernel route is redistributed to r1
+    """
+    _test_add_and_check_kernel_route_on_table_2200()
+
+
+def test_step5_no_redistribute_table_2200():
+    """
+    On r2, unconfigure the 'no redistribute' service
+    * Check that the 'redistribute' command is not configured
+    * Check that the kernel route is not redistributed to r1
+    """
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    tgen.gears["r2"].vtysh_cmd(
+        "configure terminal\nrouter bgp 65501\naddress-family ipv4 unicast\nno redistribute table-direct\n"
+    )
+
+    step("r2, check that the 'redistribute' command is not configured")
+    out = tgen.net["r2"].cmd(
+        "vtysh -c 'show running-config' | grep 'redistribute table-direct'"
+    )
+
+    if "redistribute" in out:
+        assert True, "r2, redistribute command still present"
+
+    _check_zebra_rib_r1(False)
+
+
+def test_step6_redistribute_table_2200():
+    """
+    On r2, configure the 'redistribute' service
+    * Check that the 'redistribute' command is configured
+    * Check that the kernel route is redistributed to r1
+    """
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    tgen.gears["r2"].vtysh_cmd(
+        "configure terminal\nrouter bgp 65501\naddress-family ipv4 unicast\nredistribute table-direct 2200\n"
+    )
+
+    step("r2, check that the 'redistribute' command is configured")
+    out = tgen.net["r2"].cmd(
+        "vtysh -c 'show running-config' | grep 'redistribute table-direct'"
+    )
+    if "redistribute" not in out:
+        assert True, "r2, redistribute command still present"
+
+    _check_zebra_rib_r1(True)
+
+
+def test_step7_reset_bgp_instance_add_kernel_route_and_add_bgp():
+    """
+    On r2, remove BGP configuration, create a kernel route on table 2200,
+    then restore BGP configuration
+    * Check that the kernel route is redistributed to r1
+    """
+
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    router_list = tgen.routers()
+
+    router = tgen.gears["r2"]
+    step("r2, removing r2 BGP configuration")
+    router.vtysh_cmd("configure terminal\nno router bgp 65501\n")
+
+    step("r2, adding new kernel route 172.31.0.15/32 on table 2200")
+    cmd = "ip route add 172.31.0.15/32 via 172.31.1.100 table 2200"
+    tgen.net["r2"].cmd(cmd)
+
+    router = tgen.gears["r2"]
+    step("r2, restoring r2 BGP configuration")
+    tgen.net["r2"].cmd("vtysh -f {}".format(os.path.join(CWD, "r2/bgpd.conf")))
+
+    _check_zebra_rib_r1(True, with_second_route=True)
+
+
+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))