tools/testing/selftests/drivers/net/ocelot/basic_qos.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright 2022 NXP
   4
   5 # The script is mostly generic, with the exception of the
   6 # ethtool per-TC counter names ("rx_green_prio_${tc}")
   7
   8 WAIT_TIME=1
   9 NUM_NETIFS=4
  10 STABLE_MAC_ADDRS=yes
  11 NETIF_CREATE=no
  12 lib_dir=$(dirname $0)/../../../net/forwarding
  13 source $lib_dir/tc_common.sh
  14 source $lib_dir/lib.sh
  15
  16 require_command dcb
  17
  18 h1=${NETIFS[p1]}
  19 swp1=${NETIFS[p2]}
  20 swp2=${NETIFS[p3]}
  21 h2=${NETIFS[p4]}
  22
  23 H1_IPV4="192.0.2.1"
  24 H2_IPV4="192.0.2.2"
  25 H1_IPV6="2001:db8:1::1"
  26 H2_IPV6="2001:db8:1::2"
  27
  28 h1_create()
  29 {
  30         simple_if_init $h1 $H1_IPV4/24 $H1_IPV6/64
  31 }
  32
  33 h1_destroy()
  34 {
  35         simple_if_fini $h1 $H1_IPV4/24 $H1_IPV6/64
  36 }
  37
  38 h2_create()
  39 {
  40         simple_if_init $h2 $H2_IPV4/24 $H2_IPV6/64
  41 }
  42
  43 h2_destroy()
  44 {
  45         simple_if_fini $h2 $H2_IPV4/24 $H2_IPV6/64
  46 }
  47
  48 h1_vlan_create()
  49 {
  50         local vid=$1
  51
  52         vlan_create $h1 $vid
  53         simple_if_init $h1.$vid $H1_IPV4/24 $H1_IPV6/64
  54         ip link set $h1.$vid type vlan \
  55                 egress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 \
  56                 ingress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
  57 }
  58
  59 h1_vlan_destroy()
  60 {
  61         local vid=$1
  62
  63         simple_if_fini $h1.$vid $H1_IPV4/24 $H1_IPV6/64
  64         vlan_destroy $h1 $vid
  65 }
  66
  67 h2_vlan_create()
  68 {
  69         local vid=$1
  70
  71         vlan_create $h2 $vid
  72         simple_if_init $h2.$vid $H2_IPV4/24 $H2_IPV6/64
  73         ip link set $h2.$vid type vlan \
  74                 egress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7 \
  75                 ingress-qos-map 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
  76 }
  77
  78 h2_vlan_destroy()
  79 {
  80         local vid=$1
  81
  82         simple_if_fini $h2.$vid $H2_IPV4/24 $H2_IPV6/64
  83         vlan_destroy $h2 $vid
  84 }
  85
  86 vlans_prepare()
  87 {
  88         h1_vlan_create 100
  89         h2_vlan_create 100
  90
  91         tc qdisc add dev ${h1}.100 clsact
  92         tc filter add dev ${h1}.100 egress protocol ipv4 \
  93                 flower ip_proto icmp action skbedit priority 3
  94         tc filter add dev ${h1}.100 egress protocol ipv6 \
  95                 flower ip_proto icmpv6 action skbedit priority 3
  96 }
  97
  98 vlans_destroy()
  99 {
 100         tc qdisc del dev ${h1}.100 clsact
 101
 102         h1_vlan_destroy 100
 103         h2_vlan_destroy 100
 104 }
 105
 106 switch_create()
 107 {
 108         ip link set ${swp1} up
 109         ip link set ${swp2} up
 110
 111         # Ports should trust VLAN PCP even with vlan_filtering=0
 112         ip link add br0 type bridge
 113         ip link set ${swp1} master br0
 114         ip link set ${swp2} master br0
 115         ip link set br0 up
 116 }
 117
 118 switch_destroy()
 119 {
 120         ip link del br0
 121 }
 122
 123 setup_prepare()
 124 {
 125         vrf_prepare
 126
 127         h1_create
 128         h2_create
 129         switch_create
 130 }
 131
 132 cleanup()
 133 {
 134         pre_cleanup
 135
 136         h2_destroy
 137         h1_destroy
 138         switch_destroy
 139
 140         vrf_cleanup
 141 }
 142
 143 dscp_cs_to_tos()
 144 {
 145         local dscp_cs=$1
 146
 147         # https://datatracker.ietf.org/doc/html/rfc2474
 148         # 4.2.2.1  The Class Selector Codepoints
 149         echo $((${dscp_cs} << 5))
 150 }
 151
 152 run_test()
 153 {
 154         local test_name=$1; shift
 155         local if_name=$1; shift
 156         local tc=$1; shift
 157         local tos=$1; shift
 158         local counter_name="rx_green_prio_${tc}"
 159         local ipv4_before
 160         local ipv4_after
 161         local ipv6_before
 162         local ipv6_after
 163
 164         ipv4_before=$(ethtool_stats_get ${swp1} "${counter_name}")
 165         ping_do ${if_name} $H2_IPV4 "-Q ${tos}"
 166         ipv4_after=$(ethtool_stats_get ${swp1} "${counter_name}")
 167
 168         if [ $((${ipv4_after} - ${ipv4_before})) -lt ${PING_COUNT} ]; then
 169                 RET=1
 170         else
 171                 RET=0
 172         fi
 173         log_test "IPv4 ${test_name}"
 174
 175         ipv6_before=$(ethtool_stats_get ${swp1} "${counter_name}")
 176         ping_do ${if_name} $H2_IPV6 "-Q ${tos}"
 177         ipv6_after=$(ethtool_stats_get ${swp1} "${counter_name}")
 178
 179         if [ $((${ipv6_after} - ${ipv6_before})) -lt ${PING_COUNT} ]; then
 180                 RET=1
 181         else
 182                 RET=0
 183         fi
 184         log_test "IPv6 ${test_name}"
 185 }
 186
 187 port_default_prio_get()
 188 {
 189         local if_name=$1
 190         local prio
 191
 192         prio="$(dcb -j app show dev ${if_name} default-prio | \
 193                 jq '.default_prio[]')"
 194         if [ -z "${prio}" ]; then
 195                 prio=0
 196         fi
 197
 198         echo ${prio}
 199 }
 200
 201 test_port_default()
 202 {
 203         local orig=$(port_default_prio_get ${swp1})
 204         local dmac=$(mac_get ${h2})
 205
 206         dcb app replace dev ${swp1} default-prio 5
 207
 208         run_test "Port-default QoS classification" ${h1} 5 0
 209
 210         dcb app replace dev ${swp1} default-prio ${orig}
 211 }
 212
 213 test_vlan_pcp()
 214 {
 215         vlans_prepare
 216
 217         run_test "Trusted VLAN PCP QoS classification" ${h1}.100 3 0
 218
 219         vlans_destroy
 220 }
 221
 222 test_ip_dscp()
 223 {
 224         local port_default=$(port_default_prio_get ${swp1})
 225         local tos=$(dscp_cs_to_tos 4)
 226
 227         dcb app add dev ${swp1} dscp-prio CS4:4
 228         run_test "Trusted DSCP QoS classification" ${h1} 4 ${tos}
 229         dcb app del dev ${swp1} dscp-prio CS4:4
 230
 231         vlans_prepare
 232         run_test "Untrusted DSCP QoS classification follows VLAN PCP" \
 233                 ${h1}.100 3 ${tos}
 234         vlans_destroy
 235
 236         run_test "Untrusted DSCP QoS classification follows port default" \
 237                 ${h1} ${port_default} ${tos}
 238 }
 239
 240 trap cleanup EXIT
 241
 242 ALL_TESTS="
 243         test_port_default
 244         test_vlan_pcp
 245         test_ip_dscp
 246 "
 247
 248 setup_prepare
 249 setup_wait
 250
 251 tests_run
 252
 253 exit $EXIT_STATUS