CoCalc -- basic

GitHub Repository: torvalds/linux
Path: blob/master/tools/testing/selftests/drivers/net/ocelot/basic_qos.sh
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright 2022 NXP
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# The script is mostly generic, with the exception of the
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# ethtool per-TC counter names ("rx_green_prio_${tc}")
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WAIT_TIME=1
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NUM_NETIFS=4
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STABLE_MAC_ADDRS=yes
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NETIF_CREATE=no
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lib_dir=$(dirname $0)/../../../net/forwarding
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source $lib_dir/tc_common.sh
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source $lib_dir/lib.sh
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require_command dcb
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h1=${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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H1_IPV4="192.0.2.1"
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H2_IPV4="192.0.2.2"
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H1_IPV6="2001:db8:1::1"
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H2_IPV6="2001:db8:1::2"
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h1_create()
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{
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	simple_if_init $h1 $H1_IPV4/24 $H1_IPV6/64
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}
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h1_destroy()
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{
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	simple_if_fini $h1 $H1_IPV4/24 $H1_IPV6/64
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}
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h2_create()
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{
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	simple_if_init $h2 $H2_IPV4/24 $H2_IPV6/64
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}
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h2_destroy()
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{
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	simple_if_fini $h2 $H2_IPV4/24 $H2_IPV6/64
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}
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h1_vlan_create()
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{
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	local vid=$1
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	vlan_create $h1 $vid
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	simple_if_init $h1.$vid $H1_IPV4/24 $H1_IPV6/64
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	ip link set $h1.$vid type vlan \
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		egress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 \
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		ingress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
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}
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h1_vlan_destroy()
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{
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	local vid=$1
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	simple_if_fini $h1.$vid $H1_IPV4/24 $H1_IPV6/64
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	vlan_destroy $h1 $vid
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}
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h2_vlan_create()
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{
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	local vid=$1
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	vlan_create $h2 $vid
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	simple_if_init $h2.$vid $H2_IPV4/24 $H2_IPV6/64
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	ip link set $h2.$vid type vlan \
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		egress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 \
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		ingress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
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}
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h2_vlan_destroy()
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{
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	local vid=$1
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	simple_if_fini $h2.$vid $H2_IPV4/24 $H2_IPV6/64
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	vlan_destroy $h2 $vid
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}
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vlans_prepare()
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{
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	h1_vlan_create 100
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	h2_vlan_create 100
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	tc qdisc add dev ${h1}.100 clsact
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	tc filter add dev ${h1}.100 egress protocol ipv4 \
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		flower ip_proto icmp action skbedit priority 3
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	tc filter add dev ${h1}.100 egress protocol ipv6 \
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		flower ip_proto icmpv6 action skbedit priority 3
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}
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vlans_destroy()
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{
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	tc qdisc del dev ${h1}.100 clsact
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	h1_vlan_destroy 100
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	h2_vlan_destroy 100
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}
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switch_create()
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{
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	ip link set ${swp1} up
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	ip link set ${swp2} up
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	# Ports should trust VLAN PCP even with vlan_filtering=0
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	ip link add br0 type bridge
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	ip link set ${swp1} master br0
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	ip link set ${swp2} master br0
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	ip link set br0 up
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}
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switch_destroy()
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{
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	ip link del br0
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}
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setup_prepare()
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{
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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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	h2_destroy
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	h1_destroy
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	switch_destroy
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	vrf_cleanup
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}
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dscp_cs_to_tos()
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{
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	local dscp_cs=$1
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	# https://datatracker.ietf.org/doc/html/rfc2474
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	# 4.2.2.1  The Class Selector Codepoints
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	echo $((${dscp_cs} << 5))
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}
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run_test()
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{
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	local test_name=$1; shift
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	local if_name=$1; shift
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	local tc=$1; shift
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	local tos=$1; shift
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	local counter_name="rx_green_prio_${tc}"
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	local ipv4_before
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	local ipv4_after
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	local ipv6_before
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	local ipv6_after
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	ipv4_before=$(ethtool_stats_get ${swp1} "${counter_name}")
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	ping_do ${if_name} $H2_IPV4 "-Q ${tos}"
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	ipv4_after=$(ethtool_stats_get ${swp1} "${counter_name}")
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	if [ $((${ipv4_after} - ${ipv4_before})) -lt ${PING_COUNT} ]; then
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		RET=1
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	else
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		RET=0
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	fi
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	log_test "IPv4 ${test_name}"
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	ipv6_before=$(ethtool_stats_get ${swp1} "${counter_name}")
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	ping_do ${if_name} $H2_IPV6 "-Q ${tos}"
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	ipv6_after=$(ethtool_stats_get ${swp1} "${counter_name}")
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	if [ $((${ipv6_after} - ${ipv6_before})) -lt ${PING_COUNT} ]; then
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		RET=1
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	else
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		RET=0
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	fi
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	log_test "IPv6 ${test_name}"
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}
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port_default_prio_get()
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{
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	local if_name=$1
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	local prio
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	prio="$(dcb -j app show dev ${if_name} default-prio | \
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		jq '.default_prio[]')"
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	if [ -z "${prio}" ]; then
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		prio=0
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	fi
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	echo ${prio}
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}
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test_port_default()
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{
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	local orig=$(port_default_prio_get ${swp1})
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	local dmac=$(mac_get ${h2})
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	dcb app replace dev ${swp1} default-prio 5
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	run_test "Port-default QoS classification" ${h1} 5 0
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	dcb app replace dev ${swp1} default-prio ${orig}
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}
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test_vlan_pcp()
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{
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	vlans_prepare
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	run_test "Trusted VLAN PCP QoS classification" ${h1}.100 3 0
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	vlans_destroy
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}
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test_ip_dscp()
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{
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	local port_default=$(port_default_prio_get ${swp1})
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	local tos=$(dscp_cs_to_tos 4)
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	dcb app add dev ${swp1} dscp-prio CS4:4
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	run_test "Trusted DSCP QoS classification" ${h1} 4 ${tos}
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	dcb app del dev ${swp1} dscp-prio CS4:4
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	vlans_prepare
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	run_test "Untrusted DSCP QoS classification follows VLAN PCP" \
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		${h1}.100 3 ${tos}
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	vlans_destroy
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	run_test "Untrusted DSCP QoS classification follows port default" \
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		${h1} ${port_default} ${tos}
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}
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trap cleanup EXIT
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ALL_TESTS="
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	test_port_default
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	test_vlan_pcp
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	test_ip_dscp
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"
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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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