tools/testing/selftests/drivers/net/hw/hw_stats_l3.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 # +--------------------+                     +----------------------+
   5 # | H1                 |                     |                   H2 |
   6 # |                    |                     |                      |
   7 # |          $h1.200 + |                     | + $h2.200            |
   8 # |     192.0.2.1/28 | |                     | | 192.0.2.18/28      |
   9 # | 2001:db8:1::1/64 | |                     | | 2001:db8:2::1/64   |
  10 # |                  | |                     | |                    |
  11 # |              $h1 + |                     | + $h2                |
  12 # |                  | |                     | |                    |
  13 # +------------------|-+                     +-|--------------------+
  14 #                    |                         |
  15 # +------------------|-------------------------|--------------------+
  16 # | SW               |                         |                    |
  17 # |                  |                         |                    |
  18 # |             $rp1 +                         + $rp2               |
  19 # |                  |                         |                    |
  20 # |         $rp1.200 +                         + $rp2.200           |
  21 # |     192.0.2.2/28                             192.0.2.17/28      |
  22 # | 2001:db8:1::2/64                             2001:db8:2::2/64   |
  23 # |                                                                 |
  24 # +-----------------------------------------------------------------+
  25
  26 ALL_TESTS="
  27         ping_ipv4
  28         ping_ipv6
  29         test_stats_rx_ipv4
  30         test_stats_tx_ipv4
  31         test_stats_rx_ipv6
  32         test_stats_tx_ipv6
  33         respin_enablement
  34         test_stats_rx_ipv4
  35         test_stats_tx_ipv4
  36         test_stats_rx_ipv6
  37         test_stats_tx_ipv6
  38         reapply_config
  39         ping_ipv4
  40         ping_ipv6
  41         test_stats_rx_ipv4
  42         test_stats_tx_ipv4
  43         test_stats_rx_ipv6
  44         test_stats_tx_ipv6
  45         test_stats_report_rx
  46         test_stats_report_tx
  47         test_destroy_enabled
  48         test_double_enable
  49 "
  50 NUM_NETIFS=4
  51 lib_dir=$(dirname "$0")
  52 source "$lib_dir"/../../../net/forwarding/lib.sh
  53 source "$lib_dir"/../../../net/forwarding/tc_common.sh
  54
  55 h1_create()
  56 {
  57         simple_if_init $h1
  58         vlan_create $h1 200 v$h1 192.0.2.1/28 2001:db8:1::1/64
  59         ip route add 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2
  60         ip -6 route add 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::2
  61 }
  62
  63 h1_destroy()
  64 {
  65         ip -6 route del 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::2
  66         ip route del 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2
  67         vlan_destroy $h1 200
  68         simple_if_fini $h1
  69 }
  70
  71 h2_create()
  72 {
  73         simple_if_init $h2
  74         vlan_create $h2 200 v$h2 192.0.2.18/28 2001:db8:2::1/64
  75         ip route add 192.0.2.0/28 vrf v$h2 nexthop via 192.0.2.17
  76         ip -6 route add 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::2
  77 }
  78
  79 h2_destroy()
  80 {
  81         ip -6 route del 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::2
  82         ip route del 192.0.2.0/28 vrf v$h2 nexthop via 192.0.2.17
  83         vlan_destroy $h2 200
  84         simple_if_fini $h2
  85 }
  86
  87 router_rp1_200_create()
  88 {
  89         ip link add name $rp1.200 link $rp1 type vlan id 200
  90         ip link set dev $rp1.200 addrgenmode eui64
  91         ip link set dev $rp1.200 up
  92         ip address add dev $rp1.200 192.0.2.2/28
  93         ip address add dev $rp1.200 2001:db8:1::2/64
  94         ip stats set dev $rp1.200 l3_stats on
  95 }
  96
  97 router_rp1_200_destroy()
  98 {
  99         ip stats set dev $rp1.200 l3_stats off
 100         ip address del dev $rp1.200 2001:db8:1::2/64
 101         ip address del dev $rp1.200 192.0.2.2/28
 102         ip link del dev $rp1.200
 103 }
 104
 105 router_create()
 106 {
 107         ip link set dev $rp1 up
 108         router_rp1_200_create
 109
 110         ip link set dev $rp2 up
 111         vlan_create $rp2 200 "" 192.0.2.17/28 2001:db8:2::2/64
 112 }
 113
 114 router_destroy()
 115 {
 116         vlan_destroy $rp2 200
 117         ip link set dev $rp2 down
 118
 119         router_rp1_200_destroy
 120         ip link set dev $rp1 down
 121 }
 122
 123 setup_prepare()
 124 {
 125         h1=${NETIFS[p1]}
 126         rp1=${NETIFS[p2]}
 127
 128         rp2=${NETIFS[p3]}
 129         h2=${NETIFS[p4]}
 130
 131         rp1mac=$(mac_get $rp1)
 132         rp2mac=$(mac_get $rp2)
 133
 134         vrf_prepare
 135
 136         h1_create
 137         h2_create
 138
 139         router_create
 140
 141         forwarding_enable
 142 }
 143
 144 cleanup()
 145 {
 146         pre_cleanup
 147
 148         forwarding_restore
 149
 150         router_destroy
 151
 152         h2_destroy
 153         h1_destroy
 154
 155         vrf_cleanup
 156 }
 157
 158 ping_ipv4()
 159 {
 160         ping_test $h1.200 192.0.2.18 " IPv4"
 161 }
 162
 163 ping_ipv6()
 164 {
 165         ping_test $h1.200 2001:db8:2::1 " IPv6"
 166 }
 167
 168 send_packets_rx_ipv4()
 169 {
 170         # Send 21 packets instead of 20, because the first one might trap and go
 171         # through the SW datapath, which might not bump the HW counter.
 172         $MZ $h1.200 -c 21 -d 20msec -p 100 \
 173             -a own -b $rp1mac -A 192.0.2.1 -B 192.0.2.18 \
 174             -q -t udp sp=54321,dp=12345
 175 }
 176
 177 send_packets_rx_ipv6()
 178 {
 179         $MZ $h1.200 -6 -c 21 -d 20msec -p 100 \
 180             -a own -b $rp1mac -A 2001:db8:1::1 -B 2001:db8:2::1 \
 181             -q -t udp sp=54321,dp=12345
 182 }
 183
 184 send_packets_tx_ipv4()
 185 {
 186         $MZ $h2.200 -c 21 -d 20msec -p 100 \
 187             -a own -b $rp2mac -A 192.0.2.18 -B 192.0.2.1 \
 188             -q -t udp sp=54321,dp=12345
 189 }
 190
 191 send_packets_tx_ipv6()
 192 {
 193         $MZ $h2.200 -6 -c 21 -d 20msec -p 100 \
 194             -a own -b $rp2mac -A 2001:db8:2::1 -B 2001:db8:1::1 \
 195             -q -t udp sp=54321,dp=12345
 196 }
 197
 198 ___test_stats()
 199 {
 200         local dir=$1; shift
 201         local prot=$1; shift
 202
 203         local a
 204         local b
 205
 206         a=$(hw_stats_get l3_stats $rp1.200 ${dir} packets)
 207         send_packets_${dir}_${prot}
 208         "$@"
 209         b=$(busywait "$TC_HIT_TIMEOUT" until_counter_is ">= $a + 20" \
 210                        hw_stats_get l3_stats $rp1.200 ${dir} packets)
 211         check_err $? "Traffic not reflected in the counter: $a -> $b"
 212 }
 213
 214 __test_stats()
 215 {
 216         local dir=$1; shift
 217         local prot=$1; shift
 218
 219         RET=0
 220         ___test_stats "$dir" "$prot"
 221         log_test "Test $dir packets: $prot"
 222 }
 223
 224 test_stats_rx_ipv4()
 225 {
 226         __test_stats rx ipv4
 227 }
 228
 229 test_stats_tx_ipv4()
 230 {
 231         __test_stats tx ipv4
 232 }
 233
 234 test_stats_rx_ipv6()
 235 {
 236         __test_stats rx ipv6
 237 }
 238
 239 test_stats_tx_ipv6()
 240 {
 241         __test_stats tx ipv6
 242 }
 243
 244 # Make sure everything works well even after stats have been disabled and
 245 # reenabled on the same device without touching the L3 configuration.
 246 respin_enablement()
 247 {
 248         log_info "Turning stats off and on again"
 249         ip stats set dev $rp1.200 l3_stats off
 250         ip stats set dev $rp1.200 l3_stats on
 251 }
 252
 253 # For the initial run, l3_stats is enabled on a completely set up netdevice. Now
 254 # do it the other way around: enabling the L3 stats on an L2 netdevice, and only
 255 # then apply the L3 configuration.
 256 reapply_config()
 257 {
 258         log_info "Reapplying configuration"
 259
 260         router_rp1_200_destroy
 261
 262         ip link add name $rp1.200 link $rp1 type vlan id 200
 263         ip link set dev $rp1.200 addrgenmode none
 264         ip stats set dev $rp1.200 l3_stats on
 265         ip link set dev $rp1.200 addrgenmode eui64
 266         ip link set dev $rp1.200 up
 267         ip address add dev $rp1.200 192.0.2.2/28
 268         ip address add dev $rp1.200 2001:db8:1::2/64
 269 }
 270
 271 __test_stats_report()
 272 {
 273         local dir=$1; shift
 274         local prot=$1; shift
 275
 276         local a
 277         local b
 278
 279         RET=0
 280
 281         a=$(hw_stats_get l3_stats $rp1.200 ${dir} packets)
 282         send_packets_${dir}_${prot}
 283         ip address flush dev $rp1.200
 284         b=$(busywait "$TC_HIT_TIMEOUT" until_counter_is ">= $a + 20" \
 285                        hw_stats_get l3_stats $rp1.200 ${dir} packets)
 286         check_err $? "Traffic not reflected in the counter: $a -> $b"
 287         log_test "Test ${dir} packets: stats pushed on loss of L3"
 288
 289         ip stats set dev $rp1.200 l3_stats off
 290         ip link del dev $rp1.200
 291         router_rp1_200_create
 292 }
 293
 294 test_stats_report_rx()
 295 {
 296         __test_stats_report rx ipv4
 297 }
 298
 299 test_stats_report_tx()
 300 {
 301         __test_stats_report tx ipv4
 302 }
 303
 304 test_destroy_enabled()
 305 {
 306         RET=0
 307
 308         ip link del dev $rp1.200
 309         router_rp1_200_create
 310
 311         log_test "Destroy l3_stats-enabled netdev"
 312 }
 313
 314 test_double_enable()
 315 {
 316         RET=0
 317         ___test_stats rx ipv4 \
 318                 ip stats set dev $rp1.200 l3_stats on
 319         log_test "Test stat retention across a spurious enablement"
 320 }
 321
 322 trap cleanup EXIT
 323
 324 setup_prepare
 325 setup_wait
 326
 327 used=$(ip -j stats show dev $rp1.200 group offload subgroup hw_stats_info |
 328            jq '.[].info.l3_stats.used')
 329 [[ $used = true ]]
 330 check_err $? "hw_stats_info.used=$used"
 331 log_test "l3_stats offloaded"
 332 tests_run
 333
 334 exit $EXIT_STATUS