tools/testing/selftests/drivers/net/netdevsim/nexthop.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # This test is for checking the nexthop offload API. It makes use of netdevsim
   5 # which registers a listener to the nexthop notification chain.
   6
   7 lib_dir=$(dirname $0)/../../../net/forwarding
   8
   9 ALL_TESTS="
  10         nexthop_single_add_test
  11         nexthop_single_add_err_test
  12         nexthop_group_add_test
  13         nexthop_group_add_err_test
  14         nexthop_group_replace_test
  15         nexthop_group_replace_err_test
  16         nexthop_single_replace_test
  17         nexthop_single_replace_err_test
  18         nexthop_single_in_group_replace_test
  19         nexthop_single_in_group_replace_err_test
  20         nexthop_single_in_group_delete_test
  21         nexthop_single_in_group_delete_err_test
  22         nexthop_replay_test
  23         nexthop_replay_err_test
  24 "
  25 NETDEVSIM_PATH=/sys/bus/netdevsim/
  26 DEV_ADDR=1337
  27 DEV=netdevsim${DEV_ADDR}
  28 DEVLINK_DEV=netdevsim/${DEV}
  29 SYSFS_NET_DIR=/sys/bus/netdevsim/devices/$DEV/net/
  30 NUM_NETIFS=0
  31 source $lib_dir/lib.sh
  32 source $lib_dir/devlink_lib.sh
  33
  34 nexthop_check()
  35 {
  36         local nharg="$1"; shift
  37         local expected="$1"; shift
  38
  39         out=$($IP nexthop show ${nharg} | sed -e 's/ *$//')
  40         if [[ "$out" != "$expected" ]]; then
  41                 return 1
  42         fi
  43
  44         return 0
  45 }
  46
  47 nexthop_resource_check()
  48 {
  49         local expected_occ=$1; shift
  50
  51         occ=$($DEVLINK -jp resource show $DEVLINK_DEV \
  52                 | jq '.[][][] | select(.name=="nexthops") | .["occ"]')
  53
  54         if [ $expected_occ -ne $occ ]; then
  55                 return 1
  56         fi
  57
  58         return 0
  59 }
  60
  61 nexthop_resource_set()
  62 {
  63         local size=$1; shift
  64
  65         $DEVLINK resource set $DEVLINK_DEV path nexthops size $size
  66         $DEVLINK dev reload $DEVLINK_DEV
  67 }
  68
  69 nexthop_single_add_test()
  70 {
  71         RET=0
  72
  73         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
  74         nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
  75         check_err $? "Unexpected nexthop entry"
  76
  77         nexthop_resource_check 1
  78         check_err $? "Wrong nexthop occupancy"
  79
  80         $IP nexthop del id 1
  81         nexthop_resource_check 0
  82         check_err $? "Wrong nexthop occupancy after delete"
  83
  84         log_test "Single nexthop add and delete"
  85 }
  86
  87 nexthop_single_add_err_test()
  88 {
  89         RET=0
  90
  91         nexthop_resource_set 1
  92
  93         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
  94
  95         $IP nexthop add id 2 via 192.0.2.3 dev dummy1 &> /dev/null
  96         check_fail $? "Nexthop addition succeeded when should fail"
  97
  98         nexthop_resource_check 1
  99         check_err $? "Wrong nexthop occupancy"
 100
 101         log_test "Single nexthop add failure"
 102
 103         $IP nexthop flush &> /dev/null
 104         nexthop_resource_set 9999
 105 }
 106
 107 nexthop_group_add_test()
 108 {
 109         RET=0
 110
 111         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 112         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 113
 114         $IP nexthop add id 10 group 1/2
 115         nexthop_check "id 10" "id 10 group 1/2 trap"
 116         check_err $? "Unexpected nexthop group entry"
 117
 118         nexthop_resource_check 4
 119         check_err $? "Wrong nexthop occupancy"
 120
 121         $IP nexthop del id 10
 122         nexthop_resource_check 2
 123         check_err $? "Wrong nexthop occupancy after delete"
 124
 125         $IP nexthop add id 10 group 1,20/2,39
 126         nexthop_check "id 10" "id 10 group 1,20/2,39 trap"
 127         check_err $? "Unexpected weighted nexthop group entry"
 128
 129         nexthop_resource_check 61
 130         check_err $? "Wrong weighted nexthop occupancy"
 131
 132         $IP nexthop del id 10
 133         nexthop_resource_check 2
 134         check_err $? "Wrong nexthop occupancy after delete"
 135
 136         log_test "Nexthop group add and delete"
 137
 138         $IP nexthop flush &> /dev/null
 139 }
 140
 141 nexthop_group_add_err_test()
 142 {
 143         RET=0
 144
 145         nexthop_resource_set 2
 146
 147         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 148         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 149
 150         $IP nexthop add id 10 group 1/2 &> /dev/null
 151         check_fail $? "Nexthop group addition succeeded when should fail"
 152
 153         nexthop_resource_check 2
 154         check_err $? "Wrong nexthop occupancy"
 155
 156         log_test "Nexthop group add failure"
 157
 158         $IP nexthop flush &> /dev/null
 159         nexthop_resource_set 9999
 160 }
 161
 162 nexthop_group_replace_test()
 163 {
 164         RET=0
 165
 166         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 167         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 168         $IP nexthop add id 3 via 192.0.2.4 dev dummy1
 169         $IP nexthop add id 10 group 1/2
 170
 171         $IP nexthop replace id 10 group 1/2/3
 172         nexthop_check "id 10" "id 10 group 1/2/3 trap"
 173         check_err $? "Unexpected nexthop group entry"
 174
 175         nexthop_resource_check 6
 176         check_err $? "Wrong nexthop occupancy"
 177
 178         log_test "Nexthop group replace"
 179
 180         $IP nexthop flush &> /dev/null
 181 }
 182
 183 nexthop_group_replace_err_test()
 184 {
 185         RET=0
 186
 187         nexthop_resource_set 5
 188
 189         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 190         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 191         $IP nexthop add id 3 via 192.0.2.4 dev dummy1
 192         $IP nexthop add id 10 group 1/2
 193
 194         $IP nexthop replace id 10 group 1/2/3 &> /dev/null
 195         check_fail $? "Nexthop group replacement succeeded when should fail"
 196
 197         nexthop_check "id 10" "id 10 group 1/2 trap"
 198         check_err $? "Unexpected nexthop group entry after failure"
 199
 200         nexthop_resource_check 5
 201         check_err $? "Wrong nexthop occupancy after failure"
 202
 203         log_test "Nexthop group replace failure"
 204
 205         $IP nexthop flush &> /dev/null
 206         nexthop_resource_set 9999
 207 }
 208
 209 nexthop_single_replace_test()
 210 {
 211         RET=0
 212
 213         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 214
 215         $IP nexthop replace id 1 via 192.0.2.3 dev dummy1
 216         nexthop_check "id 1" "id 1 via 192.0.2.3 dev dummy1 scope link trap"
 217         check_err $? "Unexpected nexthop entry"
 218
 219         nexthop_resource_check 1
 220         check_err $? "Wrong nexthop occupancy"
 221
 222         log_test "Single nexthop replace"
 223
 224         $IP nexthop flush &> /dev/null
 225 }
 226
 227 nexthop_single_replace_err_test()
 228 {
 229         RET=0
 230
 231         # This is supposed to cause the replace to fail because the new nexthop
 232         # is programmed before deleting the replaced one.
 233         nexthop_resource_set 1
 234
 235         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 236
 237         $IP nexthop replace id 1 via 192.0.2.3 dev dummy1 &> /dev/null
 238         check_fail $? "Nexthop replace succeeded when should fail"
 239
 240         nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
 241         check_err $? "Unexpected nexthop entry after failure"
 242
 243         nexthop_resource_check 1
 244         check_err $? "Wrong nexthop occupancy after failure"
 245
 246         log_test "Single nexthop replace failure"
 247
 248         $IP nexthop flush &> /dev/null
 249         nexthop_resource_set 9999
 250 }
 251
 252 nexthop_single_in_group_replace_test()
 253 {
 254         RET=0
 255
 256         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 257         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 258         $IP nexthop add id 10 group 1/2
 259
 260         $IP nexthop replace id 1 via 192.0.2.4 dev dummy1
 261         check_err $? "Failed to replace nexthop when should not"
 262
 263         nexthop_check "id 10" "id 10 group 1/2 trap"
 264         check_err $? "Unexpected nexthop group entry"
 265
 266         nexthop_resource_check 4
 267         check_err $? "Wrong nexthop occupancy"
 268
 269         log_test "Single nexthop replace while in group"
 270
 271         $IP nexthop flush &> /dev/null
 272 }
 273
 274 nexthop_single_in_group_replace_err_test()
 275 {
 276         RET=0
 277
 278         nexthop_resource_set 5
 279
 280         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 281         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 282         $IP nexthop add id 10 group 1/2
 283
 284         $IP nexthop replace id 1 via 192.0.2.4 dev dummy1 &> /dev/null
 285         check_fail $? "Nexthop replacement succeeded when should fail"
 286
 287         nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
 288         check_err $? "Unexpected nexthop entry after failure"
 289
 290         nexthop_check "id 10" "id 10 group 1/2 trap"
 291         check_err $? "Unexpected nexthop group entry after failure"
 292
 293         nexthop_resource_check 4
 294         check_err $? "Wrong nexthop occupancy"
 295
 296         log_test "Single nexthop replace while in group failure"
 297
 298         $IP nexthop flush &> /dev/null
 299         nexthop_resource_set 9999
 300 }
 301
 302 nexthop_single_in_group_delete_test()
 303 {
 304         RET=0
 305
 306         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 307         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 308         $IP nexthop add id 10 group 1/2
 309
 310         $IP nexthop del id 1
 311         nexthop_check "id 10" "id 10 group 2 trap"
 312         check_err $? "Unexpected nexthop group entry"
 313
 314         nexthop_resource_check 2
 315         check_err $? "Wrong nexthop occupancy"
 316
 317         log_test "Single nexthop delete while in group"
 318
 319         $IP nexthop flush &> /dev/null
 320 }
 321
 322 nexthop_single_in_group_delete_err_test()
 323 {
 324         RET=0
 325
 326         # First, nexthop 1 will be deleted, which will reduce the occupancy to
 327         # 5. Afterwards, a replace notification will be sent for nexthop group
 328         # 10 with only two nexthops. Since the new group is allocated before
 329         # the old is deleted, the replacement will fail as it will result in an
 330         # occupancy of 7.
 331         nexthop_resource_set 6
 332
 333         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 334         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 335         $IP nexthop add id 3 via 192.0.2.4 dev dummy1
 336         $IP nexthop add id 10 group 1/2/3
 337
 338         $IP nexthop del id 1
 339
 340         nexthop_resource_check 5
 341         check_err $? "Wrong nexthop occupancy"
 342
 343         log_test "Single nexthop delete while in group failure"
 344
 345         $IP nexthop flush &> /dev/null
 346         nexthop_resource_set 9999
 347 }
 348
 349 nexthop_replay_test()
 350 {
 351         RET=0
 352
 353         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 354         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 355         $IP nexthop add id 10 group 1/2
 356
 357         $DEVLINK dev reload $DEVLINK_DEV
 358         check_err $? "Failed to reload when should not"
 359
 360         nexthop_check "id 1" "id 1 via 192.0.2.2 dev dummy1 scope link trap"
 361         check_err $? "Unexpected nexthop entry after reload"
 362
 363         nexthop_check "id 2" "id 2 via 192.0.2.3 dev dummy1 scope link trap"
 364         check_err $? "Unexpected nexthop entry after reload"
 365
 366         nexthop_check "id 10" "id 10 group 1/2 trap"
 367         check_err $? "Unexpected nexthop group entry after reload"
 368
 369         nexthop_resource_check 4
 370         check_err $? "Wrong nexthop occupancy"
 371
 372         log_test "Nexthop replay"
 373
 374         $IP nexthop flush &> /dev/null
 375 }
 376
 377 nexthop_replay_err_test()
 378 {
 379         RET=0
 380
 381         $IP nexthop add id 1 via 192.0.2.2 dev dummy1
 382         $IP nexthop add id 2 via 192.0.2.3 dev dummy1
 383         $IP nexthop add id 10 group 1/2
 384
 385         # Reduce size of nexthop resource so that reload will fail.
 386         $DEVLINK resource set $DEVLINK_DEV path nexthops size 3
 387         $DEVLINK dev reload $DEVLINK_DEV &> /dev/null
 388         check_fail $? "Reload succeeded when should fail"
 389
 390         $DEVLINK resource set $DEVLINK_DEV path nexthops size 9999
 391         $DEVLINK dev reload $DEVLINK_DEV
 392         check_err $? "Failed to reload when should not"
 393
 394         log_test "Nexthop replay failure"
 395
 396         $IP nexthop flush &> /dev/null
 397 }
 398
 399 setup_prepare()
 400 {
 401         local netdev
 402
 403         modprobe netdevsim &> /dev/null
 404
 405         echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device
 406         while [ ! -d $SYSFS_NET_DIR ] ; do :; done
 407
 408         set -e
 409
 410         ip netns add testns1
 411         devlink dev reload $DEVLINK_DEV netns testns1
 412
 413         IP="ip -netns testns1"
 414         DEVLINK="devlink -N testns1"
 415
 416         $IP link add name dummy1 up type dummy
 417         $IP address add 192.0.2.1/24 dev dummy1
 418
 419         set +e
 420 }
 421
 422 cleanup()
 423 {
 424         pre_cleanup
 425         ip netns del testns1
 426         echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device
 427         modprobe -r netdevsim &> /dev/null
 428 }
 429
 430 trap cleanup EXIT
 431
 432 setup_prepare
 433
 434 tests_run
 435
 436 exit $EXIT_STATUS