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#!/usr/bin/env python
#
# test_zebra_netlink.py
#
# Copyright (c) 2020 by
#
# 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_zebra_netlink.py: Test some basic interactions with kernel using Netlink
"""
# pylint: disable=C0413
import ipaddress
import json
import sys
from functools import partial
import pytest
from lib import topotest
from lib.topogen import Topogen, TopoRouter
from lib.topolog import logger
pytestmark = [pytest.mark.sharpd]
#####################################################
##
## Tests starting
##
#####################################################
@pytest.fixture(scope="module")
def tgen(request):
"Sets up the pytest environment"
topodef = {"s1": ("r1")}
tgen = Topogen(topodef, request.module.__name__)
tgen.start_topology()
# Initialize all routers.
router_list = tgen.routers()
for rname, router in router_list.items():
router.load_config(TopoRouter.RD_ZEBRA, "zebra.conf")
router.load_config(TopoRouter.RD_SHARP)
tgen.start_router()
yield tgen
tgen.stop_topology()
@pytest.fixture(autouse=True)
def skip_on_failure(tgen):
if tgen.routers_have_failure():
pytest.skip("skipped because of previous test failure")
def test_zebra_netlink_batching(tgen):
"Test the situation where dataplane fills netlink send buffer entirely."
logger.info(
"Test the situation where dataplane fills netlink send buffer entirely."
)
r1 = tgen.gears["r1"]
# Reduce the size of the buffer to hit the limit.
r1.vtysh_cmd("conf t\nzebra kernel netlink batch-tx-buf 256 256")
count = 100
r1.vtysh_cmd("sharp install routes 2.1.3.7 nexthop 192.168.1.1 " + str(count))
# Generate expected results
entry = {
"protocol": "sharp",
"distance": 150,
"metric": 0,
"installed": True,
"table": 254,
"nexthops": [
{
"fib": True,
"ip": "192.168.1.1",
"afi": "ipv4",
"interfaceName": "r1-eth0",
"active": True,
"weight": 1,
}
],
}
match = {}
base = int(ipaddress.ip_address(u"2.1.3.7"))
for i in range(base, base + count):
pfx = str(ipaddress.ip_network((i, 32)))
match[pfx] = [dict(entry, prefix=pfx)]
ok = topotest.router_json_cmp_retry(r1, "show ip route json", match)
assert ok, '"r1" JSON output mismatches'
r1.vtysh_cmd("sharp remove routes 2.1.3.7 " + str(count))
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
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