# SPDX-License-Identifier: GPL-2.0
# This test sends a stream of traffic from H1 through a switch, to H2. On the
# egress port from the switch ($swp2), a shaper is installed. The test verifies
# that the rates on the port match the configured shaper.
#
# In order to test per-class shaping, $swp2 actually contains TBF under PRIO or
# ETS, with two different configurations. Traffic is prioritized using 802.1p.
#
# +-------------------------------------------+
# | H1 |
# | + $h1.10 $h1.11 + |
# | | 192.0.2.1/28 192.0.2.17/28 | |
# | | | |
# | \______________ _____________/ |
# | \ / |
# | + $h1 |
# +---------------------|---------------------+
# |
# +---------------------|---------------------+
# | SW + $swp1 |
# | _______________/ \_______________ |
# | / \ |
# | +-|--------------+ +--------------|-+ |
# | | + $swp1.10 | | $swp1.11 + | |
# | | | | | |
# | | BR10 | | BR11 | |
# | | | | | |
# | | + $swp2.10 | | $swp2.11 + | |
# | +-|--------------+ +--------------|-+ |
# | \_______________ ______________/ |
# | \ / |
# | + $swp2 |
# +---------------------|---------------------+
# |
# +---------------------|---------------------+
# | H2 + $h2 |
# | ______________/ \______________ |
# | / \ |
# | | | |
# | + $h2.10 $h2.11 + |
# | 192.0.2.2/28 192.0.2.18/28 |
# +-------------------------------------------+
NUM_NETIFS=4
CHECK_TC="yes"
source $lib_dir/lib.sh
ipaddr()
{
local host=$1; shift
local vlan=$1; shift
echo 192.0.2.$((16 * (vlan - 10) + host))
}
host_create()
{
local dev=$1; shift
local host=$1; shift
simple_if_init $dev
mtu_set $dev 10000
vlan_create $dev 10 v$dev $(ipaddr $host 10)/28
ip link set dev $dev.10 type vlan egress 0:0
vlan_create $dev 11 v$dev $(ipaddr $host 11)/28
ip link set dev $dev.11 type vlan egress 0:1
}
host_destroy()
{
local dev=$1; shift
vlan_destroy $dev 11
vlan_destroy $dev 10
mtu_restore $dev
simple_if_fini $dev
}
h1_create()
{
host_create $h1 1
}
h1_destroy()
{
host_destroy $h1
}
h2_create()
{
host_create $h2 2
tc qdisc add dev $h2 clsact
tc filter add dev $h2 ingress pref 1010 prot 802.1q \
flower $TCFLAGS vlan_id 10 action pass
tc filter add dev $h2 ingress pref 1011 prot 802.1q \
flower $TCFLAGS vlan_id 11 action pass
}
h2_destroy()
{
tc qdisc del dev $h2 clsact
host_destroy $h2
}
switch_create()
{
local intf
local vlan
ip link add dev br10 type bridge
ip link add dev br11 type bridge
for intf in $swp1 $swp2; do
ip link set dev $intf up
mtu_set $intf 10000
for vlan in 10 11; do
vlan_create $intf $vlan
ip link set dev $intf.$vlan master br$vlan
ip link set dev $intf.$vlan up
done
done
for vlan in 10 11; do
ip link set dev $swp1.$vlan type vlan ingress 0:0 1:1
done
ip link set dev br10 up
ip link set dev br11 up
}
switch_destroy()
{
local intf
local vlan
# A test may have been interrupted mid-run, with Qdisc installed. Delete
# it here.
tc qdisc del dev $swp2 root 2>/dev/null
ip link set dev br11 down
ip link set dev br10 down
for intf in $swp2 $swp1; do
for vlan in 11 10; do
ip link set dev $intf.$vlan down
ip link set dev $intf.$vlan nomaster
vlan_destroy $intf $vlan
done
mtu_restore $intf
ip link set dev $intf down
done
ip link del dev br11
ip link del dev br10
}
setup_prepare()
{
h1=${NETIFS[p1]}
swp1=${NETIFS[p2]}
swp2=${NETIFS[p3]}
h2=${NETIFS[p4]}
swp3=${NETIFS[p5]}
h3=${NETIFS[p6]}
swp4=${NETIFS[p7]}
swp5=${NETIFS[p8]}
h2_mac=$(mac_get $h2)
vrf_prepare
h1_create
h2_create
switch_create
}
cleanup()
{
pre_cleanup
switch_destroy
h2_destroy
h1_destroy
vrf_cleanup
}
ping_ipv4()
{
ping_test $h1.10 $(ipaddr 2 10) " vlan 10"
ping_test $h1.11 $(ipaddr 2 11) " vlan 11"
}
tbf_get_counter()
{
local vlan=$1; shift
tc_rule_stats_get $h2 10$vlan ingress .bytes
}
do_tbf_test()
{
local vlan=$1; shift
local mbit=$1; shift
start_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 2 $vlan) $h2_mac
sleep 5 # Wait for the burst to dwindle
local t2=$(busywait_for_counter 1000 +1 tbf_get_counter $vlan)
sleep 10
local t3=$(tbf_get_counter $vlan)
stop_traffic
RET=0
# Note: TBF uses 10^6 Mbits, not 2^20 ones.
local er=$((mbit * 1000 * 1000))
local nr=$(rate $t2 $t3 10)
local nr_pct=$((100 * (nr - er) / er))
((-5 <= nr_pct && nr_pct <= 5))
xfail_on_slow check_err $? "Expected rate $(humanize $er), got $(humanize $nr), which is $nr_pct% off. Required accuracy is +-5%."
log_test "TC $((vlan - 10)): TBF rate ${mbit}Mbit"
}
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