net/ocelot/basic_qos.sh

0001 #!/bin/bash
0002 # SPDX-License-Identifier: GPL-2.0
0003 # Copyright 2022 NXP
0004
0005 # The script is mostly generic, with the exception of the
0006 # ethtool per-TC counter names ("rx_green_prio_${tc}")
0007
0008 WAIT_TIME=1
0009 NUM_NETIFS=4
0010 STABLE_MAC_ADDRS=yes
0011 NETIF_CREATE=no
0012 lib_dir=$(dirname $0)/../../../net/forwarding
0013 source $lib_dir/tc_common.sh
0014 source $lib_dir/lib.sh
0015
0016 require_command dcb
0017
0018 h1=${NETIFS[p1]}
0019 swp1=${NETIFS[p2]}
0020 swp2=${NETIFS[p3]}
0021 h2=${NETIFS[p4]}
0022
0023 H1_IPV4="192.0.2.1"
0024 H2_IPV4="192.0.2.2"
0025 H1_IPV6="2001:db8:1::1"
0026 H2_IPV6="2001:db8:1::2"
0027
0028 h1_create()
0029 {
0030         simple_if_init $h1 $H1_IPV4/24 $H1_IPV6/64
0031 }
0032
0033 h1_destroy()
0034 {
0035         simple_if_fini $h1 $H1_IPV4/24 $H1_IPV6/64
0036 }
0037
0038 h2_create()
0039 {
0040         simple_if_init $h2 $H2_IPV4/24 $H2_IPV6/64
0041 }
0042
0043 h2_destroy()
0044 {
0045         simple_if_fini $h2 $H2_IPV4/24 $H2_IPV6/64
0046 }
0047
0048 h1_vlan_create()
0049 {
0050         local vid=$1
0051
0052         vlan_create $h1 $vid
0053         simple_if_init $h1.$vid $H1_IPV4/24 $H1_IPV6/64
0054         ip link set $h1.$vid type vlan \
0055                 egress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 \
0056                 ingress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
0057 }
0058
0059 h1_vlan_destroy()
0060 {
0061         local vid=$1
0062
0063         simple_if_fini $h1.$vid $H1_IPV4/24 $H1_IPV6/64
0064         vlan_destroy $h1 $vid
0065 }
0066
0067 h2_vlan_create()
0068 {
0069         local vid=$1
0070
0071         vlan_create $h2 $vid
0072         simple_if_init $h2.$vid $H2_IPV4/24 $H2_IPV6/64
0073         ip link set $h2.$vid type vlan \
0074                 egress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 \
0075                 ingress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
0076 }
0077
0078 h2_vlan_destroy()
0079 {
0080         local vid=$1
0081
0082         simple_if_fini $h2.$vid $H2_IPV4/24 $H2_IPV6/64
0083         vlan_destroy $h2 $vid
0084 }
0085
0086 vlans_prepare()
0087 {
0088         h1_vlan_create 100
0089         h2_vlan_create 100
0090
0091         tc qdisc add dev ${h1}.100 clsact
0092         tc filter add dev ${h1}.100 egress protocol ipv4 \
0093                 flower ip_proto icmp action skbedit priority 3
0094         tc filter add dev ${h1}.100 egress protocol ipv6 \
0095                 flower ip_proto icmpv6 action skbedit priority 3
0096 }
0097
0098 vlans_destroy()
0099 {
0100         tc qdisc del dev ${h1}.100 clsact
0101
0102         h1_vlan_destroy 100
0103         h2_vlan_destroy 100
0104 }
0105
0106 switch_create()
0107 {
0108         ip link set ${swp1} up
0109         ip link set ${swp2} up
0110
0111         # Ports should trust VLAN PCP even with vlan_filtering=0
0112         ip link add br0 type bridge
0113         ip link set ${swp1} master br0
0114         ip link set ${swp2} master br0
0115         ip link set br0 up
0116 }
0117
0118 switch_destroy()
0119 {
0120         ip link del br0
0121 }
0122
0123 setup_prepare()
0124 {
0125         vrf_prepare
0126
0127         h1_create
0128         h2_create
0129         switch_create
0130 }
0131
0132 cleanup()
0133 {
0134         pre_cleanup
0135
0136         h2_destroy
0137         h1_destroy
0138         switch_destroy
0139
0140         vrf_cleanup
0141 }
0142
0143 dscp_cs_to_tos()
0144 {
0145         local dscp_cs=$1
0146
0147         # https://datatracker.ietf.org/doc/html/rfc2474
0148         # 4.2.2.1  The Class Selector Codepoints
0149         echo $((${dscp_cs} << 5))
0150 }
0151
0152 run_test()
0153 {
0154         local test_name=$1; shift
0155         local if_name=$1; shift
0156         local tc=$1; shift
0157         local tos=$1; shift
0158         local counter_name="rx_green_prio_${tc}"
0159         local ipv4_before
0160         local ipv4_after
0161         local ipv6_before
0162         local ipv6_after
0163
0164         ipv4_before=$(ethtool_stats_get ${swp1} "${counter_name}")
0165         ping_do ${if_name} $H2_IPV4 "-Q ${tos}"
0166         ipv4_after=$(ethtool_stats_get ${swp1} "${counter_name}")
0167
0168         if [ $((${ipv4_after} - ${ipv4_before})) -lt ${PING_COUNT} ]; then
0169                 RET=1
0170         else
0171                 RET=0
0172         fi
0173         log_test "IPv4 ${test_name}"
0174
0175         ipv6_before=$(ethtool_stats_get ${swp1} "${counter_name}")
0176         ping_do ${if_name} $H2_IPV6 "-Q ${tos}"
0177         ipv6_after=$(ethtool_stats_get ${swp1} "${counter_name}")
0178
0179         if [ $((${ipv6_after} - ${ipv6_before})) -lt ${PING_COUNT} ]; then
0180                 RET=1
0181         else
0182                 RET=0
0183         fi
0184         log_test "IPv6 ${test_name}"
0185 }
0186
0187 port_default_prio_get()
0188 {
0189         local if_name=$1
0190         local prio
0191
0192         prio="$(dcb -j app show dev ${if_name} default-prio | \
0193                 jq '.default_prio[]')"
0194         if [ -z "${prio}" ]; then
0195                 prio=0
0196         fi
0197
0198         echo ${prio}
0199 }
0200
0201 test_port_default()
0202 {
0203         local orig=$(port_default_prio_get ${swp1})
0204         local dmac=$(mac_get ${h2})
0205
0206         dcb app replace dev ${swp1} default-prio 5
0207
0208         run_test "Port-default QoS classification" ${h1} 5 0
0209
0210         dcb app replace dev ${swp1} default-prio ${orig}
0211 }
0212
0213 test_vlan_pcp()
0214 {
0215         vlans_prepare
0216
0217         run_test "Trusted VLAN PCP QoS classification" ${h1}.100 3 0
0218
0219         vlans_destroy
0220 }
0221
0222 test_ip_dscp()
0223 {
0224         local port_default=$(port_default_prio_get ${swp1})
0225         local tos=$(dscp_cs_to_tos 4)
0226
0227         dcb app add dev ${swp1} dscp-prio CS4:4
0228         run_test "Trusted DSCP QoS classification" ${h1} 4 ${tos}
0229         dcb app del dev ${swp1} dscp-prio CS4:4
0230
0231         vlans_prepare
0232         run_test "Untrusted DSCP QoS classification follows VLAN PCP" \
0233                 ${h1}.100 3 ${tos}
0234         vlans_destroy
0235
0236         run_test "Untrusted DSCP QoS classification follows port default" \
0237                 ${h1} ${port_default} ${tos}
0238 }
0239
0240 trap cleanup EXIT
0241
0242 ALL_TESTS="
0243         test_port_default
0244         test_vlan_pcp
0245         test_ip_dscp
0246 "
0247
0248 setup_prepare
0249 setup_wait
0250
0251 tests_run
0252
0253 exit $EXIT_STATUS