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pf tests: ALTQ priority test

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Test that ALTQ can prioritise one type of traffic over another. Do this
by establishing a slow link and saturating it with ICMP echos.
When prioritised TCP connections reliably go through. When not
prioritised TCP connections reliably fail.

MFC after:	1 week
Sponsored by:	Rubicon Communications, LLC ("Netgate")
This commit is contained in:
Kristof Provost 2021-08-26 10:25:57 +02:00
parent 3706af423f
commit cd46399b9c
1 changed files with 93 additions and 1 deletions
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94
tests/sys/netpfil/pf/altq.sh
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@ -145,10 +145,102 @@ cbq_vlan_cleanup()
altq_cleanup
}
atf_test_case "prioritise" "cleanup"
prioritise_head()
{
atf_set descr "Test prioritising one type of traffic over the other"
atf_set require.user root
}
prioritise_body()
{
altq_init
is_altq_supported cbq
epair=$(vnet_mkepair)
vnet_mkjail altq_prioritise ${epair}b
ifconfig ${epair}a 192.0.2.1/24 up
jexec altq_prioritise ifconfig ${epair}b 192.0.2.2/24 up
jexec altq_prioritise /usr/sbin/inetd -p inetd-altq.pid \
$(atf_get_srcdir)/../pf/echo_inetd.conf
# Sanity check
atf_check -s exit:0 -o ignore ping -i .1 -c 3 -s 1200 192.0.2.2
jexec altq_prioritise pfctl -e
pft_set_rules altq_prioritise \
"altq on ${epair}b bandwidth 6000b cbq queue { default, slow }" \
"queue default priority 7 cbq(default)" \
"queue slow priority 1 cbq" \
"match proto icmp queue slow" \
"match proto tcp queue default" \
"pass"
# single ping succeeds just fine
atf_check -s exit:0 -o ignore ping -c 1 192.0.2.2
# Unsaturated TCP succeeds
reply=$(echo "foo" | nc -w 5 -N 192.0.2.2 7)
if [ "$reply" != "foo" ];
then
atf_fail "Unsaturated echo failed"
fi
# "Saturate the link"
ping -i .01 -c 50 -s 1200 192.0.2.2
# We should now be hitting the limits and get these packet dropped.
rcv=$(ping -i .1 -c 5 -s 1200 192.0.2.2 | tr "," "\n" | awk '/packets received/ { print $1; }')
echo "Received $rcv packets"
if [ ${rcv} -gt 1 ]
then
atf_fail "Received ${rcv} packets in a saturated link"
fi
# TCP should still pass
for i in `seq 1 10`
do
reply=$(echo "foo_${i}" | nc -w 5 -N 192.0.2.2 7)
if [ "$reply" != "foo_${i}" ];
then
atf_fail "Prioritised echo failed ${i}"
fi
done
# Now reverse priority
pft_set_rules altq_prioritise \
"altq on ${epair}b bandwidth 6000b cbq queue { default, slow }" \
"queue default priority 7 cbq(default)" \
"queue slow priority 1 cbq" \
"match proto tcp queue slow" \
"match proto icmp queue default" \
"pass"
atf_check -s exit:0 -o ignore ping -c 1 192.0.2.2
ping -i .01 -c 50 -s 1200 192.0.2.2
for i in `seq 1 10`
do
reply=$(echo "foo_${i}" | nc -w 5 -N 192.0.2.2 7)
if [ "$reply" == "foo_${i}" ];
then
atf_fail "Unexpected echo success"
fi
done
}
prioritise_cleanup()
{
altq_cleanup
}
atf_init_test_cases()
{
atf_add_test_case "hfsc"
atf_add_test_case "match"
atf_add_test_case "cbq_vlan"
atf_add_test_case "prioritise"
}