sfq_rejects_limit_1.py

 1#!/usr/bin/env python3
 2# SPDX-License-Identifier: GPL-2.0
 3#
 4# Script that checks that SFQ rejects a limit of 1 at the kernel
 5# level. We can't use iproute2's tc because it does not accept a limit
 6# of 1.
 7
 8import sys
 9import os
10
11from pyroute2 import IPRoute
12from pyroute2.netlink.exceptions import NetlinkError
13
14ip = IPRoute()
15ifidx = ip.link_lookup(ifname=sys.argv[1])
16
17try:
18    ip.tc('add', 'sfq', ifidx, limit=1)
19    sys.exit(1)
20except NetlinkError:
21    sys.exit(0)