# SPDX-License-Identifier: GPL-2.0
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# This is a template for ETS Qdisc test.
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#
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# This test sends from H1 several traffic streams with 802.1p-tagged packets.
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# The tags are used at $swp1 to prioritize the traffic. Each stream is then
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# queued at a different ETS band according to the assigned priority. After
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# runnig for a while, counters at H2 are consulted to determine whether the
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# traffic scheduling was according to the ETS configuration.
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#
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# This template is supposed to be embedded by a test driver, which implements
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# statistics collection, any HW-specific stuff, and prominently configures the
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# system to assure that there is overcommitment at $swp2. That is necessary so
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# that the ETS traffic selection algorithm kicks in and has to schedule some
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# traffic at the expense of other.
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#
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# A driver for veth-based testing is in sch_ets.sh, an example of a driver for
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# an offloaded data path is in selftests/drivers/net/mlxsw/sch_ets.sh.
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#
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# +---------------------------------------------------------------------+
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# | H1 |
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# | + $h1.10 + $h1.11 + $h1.12 |
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# | | 192.0.2.1/28 | 192.0.2.17/28 | 192.0.2.33/28 |
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# | | egress-qos-map | egress-qos-map | egress-qos-map |
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# | | 0:0 | 0:1 | 0:2 |
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# | \____________________ | ____________________/ |
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# | \|/ |
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# | + $h1 |
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# +---------------------------|-----------------------------------------+
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# |
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# +---------------------------|-----------------------------------------+
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# | SW + $swp1 |
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# | | >1Gbps |
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# | ____________________/|\____________________ |
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# | / | \ |
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# | +--|----------------+ +--|----------------+ +--|----------------+ |
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# | | + $swp1.10 | | + $swp1.11 | | + $swp1.12 | |
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# | | ingress-qos-map| | ingress-qos-map| | ingress-qos-map| |
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# | | 0:0 1:1 2:2 | | 0:0 1:1 2:2 | | 0:0 1:1 2:2 | |
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# | | | | | | | |
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# | | BR10 | | BR11 | | BR12 | |
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# | | | | | | | |
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# | | + $swp2.10 | | + $swp2.11 | | + $swp2.12 | |
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# | +--|----------------+ +--|----------------+ +--|----------------+ |
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# | \____________________ | ____________________/ |
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# | \|/ |
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# | + $swp2 |
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# | | 1Gbps (ethtool or HTB qdisc) |
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# | | qdisc ets quanta $W0 $W1 $W2 |
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# | | priomap 0 1 2 |
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# +---------------------------|-----------------------------------------+
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# |
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# +---------------------------|-----------------------------------------+
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# | H2 + $h2 |
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# | ____________________/|\____________________ |
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# | / | \ |
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# | + $h2.10 + $h2.11 + $h2.12 |
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# | 192.0.2.2/28 192.0.2.18/28 192.0.2.34/28 |
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# +---------------------------------------------------------------------+
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NUM_NETIFS=4
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CHECK_TC=yes
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source $lib_dir/lib.sh
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source $lib_dir/sch_ets_tests.sh
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PARENT=root
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QDISC_DEV=
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sip()
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{
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echo 192.0.2.$((16 * $1 + 1))
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}
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dip()
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{
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echo 192.0.2.$((16 * $1 + 2))
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}
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# Callback from sch_ets_tests.sh
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ets_start_traffic()
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{
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local dst_mac=$(mac_get $h2)
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local i=$1; shift
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start_traffic $h1.1$i $(sip $i) $(dip $i) $dst_mac
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}
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ETS_CHANGE_QDISC=
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priomap_mode()
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{
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echo "Running in priomap mode"
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ets_delete_qdisc
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ETS_CHANGE_QDISC=ets_change_qdisc_priomap
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}
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classifier_mode()
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{
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echo "Running in classifier mode"
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ets_delete_qdisc
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ETS_CHANGE_QDISC=ets_change_qdisc_classifier
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}
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ets_change_qdisc_priomap()
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{
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local dev=$1; shift
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local nstrict=$1; shift
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local priomap=$1; shift
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local quanta=("${@}")
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local op=$(if [[ -n $QDISC_DEV ]]; then echo change; else echo add; fi)
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tc qdisc $op dev $dev $PARENT handle 10: ets \
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$(if ((nstrict)); then echo strict $nstrict; fi) \
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$(if ((${#quanta[@]})); then echo quanta ${quanta[@]}; fi) \
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priomap $priomap
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QDISC_DEV=$dev
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}
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ets_change_qdisc_classifier()
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{
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local dev=$1; shift
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local nstrict=$1; shift
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local priomap=$1; shift
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local quanta=("${@}")
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local op=$(if [[ -n $QDISC_DEV ]]; then echo change; else echo add; fi)
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tc qdisc $op dev $dev $PARENT handle 10: ets \
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$(if ((nstrict)); then echo strict $nstrict; fi) \
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$(if ((${#quanta[@]})); then echo quanta ${quanta[@]}; fi)
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if [[ $op == add ]]; then
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local prio=0
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local band
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for band in $priomap; do
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tc filter add dev $dev parent 10: basic \
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match "meta(priority eq $prio)" \
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flowid 10:$((band + 1))
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((prio++))
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done
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fi
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QDISC_DEV=$dev
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}
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# Callback from sch_ets_tests.sh
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ets_change_qdisc()
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{
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if [[ -z "$ETS_CHANGE_QDISC" ]]; then
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exit 1
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fi
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$ETS_CHANGE_QDISC "$@"
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}
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ets_delete_qdisc()
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{
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if [[ -n $QDISC_DEV ]]; then
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tc qdisc del dev $QDISC_DEV $PARENT
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QDISC_DEV=
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fi
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}
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h1_create()
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{
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local i;
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simple_if_init $h1
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mtu_set $h1 9900
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for i in {0..2}; do
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vlan_create $h1 1$i v$h1 $(sip $i)/28
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ip link set dev $h1.1$i type vlan egress 0:$i
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done
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}
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h1_destroy()
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{
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local i
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for i in {0..2}; do
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vlan_destroy $h1 1$i
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done
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mtu_restore $h1
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simple_if_fini $h1
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}
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h2_create()
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{
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local i
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simple_if_init $h2
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mtu_set $h2 9900
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for i in {0..2}; do
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vlan_create $h2 1$i v$h2 $(dip $i)/28
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done
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}
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h2_destroy()
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{
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local i
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for i in {0..2}; do
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vlan_destroy $h2 1$i
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done
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mtu_restore $h2
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simple_if_fini $h2
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}
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ets_switch_create()
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{
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local i
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ip link set dev $swp1 up
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mtu_set $swp1 9900
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ip link set dev $swp2 up
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mtu_set $swp2 9900
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for i in {0..2}; do
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vlan_create $swp1 1$i
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ip link set dev $swp1.1$i type vlan ingress 0:0 1:1 2:2
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vlan_create $swp2 1$i
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ip link add dev br1$i type bridge
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ip link set dev $swp1.1$i master br1$i
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ip link set dev $swp2.1$i master br1$i
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ip link set dev br1$i up
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ip link set dev $swp1.1$i up
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ip link set dev $swp2.1$i up
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done
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}
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ets_switch_destroy()
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{
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local i
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ets_delete_qdisc
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for i in {0..2}; do
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ip link del dev br1$i
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vlan_destroy $swp2 1$i
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vlan_destroy $swp1 1$i
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done
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mtu_restore $swp2
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ip link set dev $swp2 down
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mtu_restore $swp1
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ip link set dev $swp1 down
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}
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setup_prepare()
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{
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h1=${NETIFS[p1]}
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swp1=${NETIFS[p2]}
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swp2=${NETIFS[p3]}
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h2=${NETIFS[p4]}
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put=$swp2
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hut=$h2
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vrf_prepare
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h1_create
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h2_create
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switch_create
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}
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cleanup()
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{
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pre_cleanup
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switch_destroy
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h2_destroy
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h1_destroy
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vrf_cleanup
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}
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ping_ipv4()
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{
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ping_test $h1.10 $(dip 0) " vlan 10"
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ping_test $h1.11 $(dip 1) " vlan 11"
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ping_test $h1.12 $(dip 2) " vlan 12"
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}
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ets_run()
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{
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trap cleanup EXIT
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setup_prepare
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setup_wait
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tests_run
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exit $EXIT_STATUS
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}
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