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

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # This test is for checking the FIB offload API. It makes use of netdevsim
   5 # which registers a listener to the FIB notification chain.
   6
   7 lib_dir=$(dirname $0)/../../../net/forwarding
   8
   9 ALL_TESTS="
  10         ipv4_identical_routes
  11         ipv4_tos
  12         ipv4_metric
  13         ipv4_replace
  14         ipv4_delete
  15         ipv4_plen
  16         ipv4_replay
  17         ipv4_flush
  18         ipv4_error_path
  19         ipv4_delete_fail
  20         ipv6_add
  21         ipv6_metric
  22         ipv6_append_single
  23         ipv6_replace_single
  24         ipv6_metric_multipath
  25         ipv6_append_multipath
  26         ipv6_replace_multipath
  27         ipv6_append_multipath_to_single
  28         ipv6_delete_single
  29         ipv6_delete_multipath
  30         ipv6_replay_single
  31         ipv6_replay_multipath
  32         ipv6_error_path
  33         ipv6_delete_fail
  34 "
  35 NETDEVSIM_PATH=/sys/bus/netdevsim/
  36 DEV_ADDR=1337
  37 DEV=netdevsim${DEV_ADDR}
  38 SYSFS_NET_DIR=/sys/bus/netdevsim/devices/$DEV/net/
  39 DEBUGFS_DIR=/sys/kernel/debug/netdevsim/$DEV/
  40 NUM_NETIFS=0
  41 source $lib_dir/lib.sh
  42 source $lib_dir/fib_offload_lib.sh
  43
  44 DEVLINK_DEV=
  45 source $lib_dir/devlink_lib.sh
  46 DEVLINK_DEV=netdevsim/${DEV}
  47
  48 ipv4_identical_routes()
  49 {
  50         fib_ipv4_identical_routes_test "testns1"
  51 }
  52
  53 ipv4_tos()
  54 {
  55         fib_ipv4_tos_test "testns1"
  56 }
  57
  58 ipv4_metric()
  59 {
  60         fib_ipv4_metric_test "testns1"
  61 }
  62
  63 ipv4_replace()
  64 {
  65         fib_ipv4_replace_test "testns1"
  66 }
  67
  68 ipv4_delete()
  69 {
  70         fib_ipv4_delete_test "testns1"
  71 }
  72
  73 ipv4_plen()
  74 {
  75         fib_ipv4_plen_test "testns1"
  76 }
  77
  78 ipv4_replay_metric()
  79 {
  80         fib_ipv4_replay_metric_test "testns1" "$DEVLINK_DEV"
  81 }
  82
  83 ipv4_replay_tos()
  84 {
  85         fib_ipv4_replay_tos_test "testns1" "$DEVLINK_DEV"
  86 }
  87
  88 ipv4_replay_plen()
  89 {
  90         fib_ipv4_replay_plen_test "testns1" "$DEVLINK_DEV"
  91 }
  92
  93 ipv4_replay()
  94 {
  95         ipv4_replay_metric
  96         ipv4_replay_tos
  97         ipv4_replay_plen
  98 }
  99
 100 ipv4_flush()
 101 {
 102         fib_ipv4_flush_test "testns1"
 103 }
 104
 105 ipv4_error_path_add()
 106 {
 107         local lsb
 108
 109         RET=0
 110
 111         ip -n testns1 link add name dummy1 type dummy
 112         ip -n testns1 link set dev dummy1 up
 113
 114         devlink -N testns1 resource set $DEVLINK_DEV path IPv4/fib size 10
 115         devlink -N testns1 dev reload $DEVLINK_DEV
 116
 117         for lsb in $(seq 1 20); do
 118                 ip -n testns1 route add 192.0.2.${lsb}/32 dev dummy1 \
 119                         &> /dev/null
 120         done
 121
 122         log_test "IPv4 error path - add"
 123
 124         ip -n testns1 link del dev dummy1
 125 }
 126
 127 ipv4_error_path_replay()
 128 {
 129         local lsb
 130
 131         RET=0
 132
 133         ip -n testns1 link add name dummy1 type dummy
 134         ip -n testns1 link set dev dummy1 up
 135
 136         devlink -N testns1 resource set $DEVLINK_DEV path IPv4/fib size 100
 137         devlink -N testns1 dev reload $DEVLINK_DEV
 138
 139         for lsb in $(seq 1 20); do
 140                 ip -n testns1 route add 192.0.2.${lsb}/32 dev dummy1
 141         done
 142
 143         devlink -N testns1 resource set $DEVLINK_DEV path IPv4/fib size 10
 144         devlink -N testns1 dev reload $DEVLINK_DEV &> /dev/null
 145
 146         log_test "IPv4 error path - replay"
 147
 148         ip -n testns1 link del dev dummy1
 149
 150         # Successfully reload after deleting all the routes.
 151         devlink -N testns1 resource set $DEVLINK_DEV path IPv4/fib size 100
 152         devlink -N testns1 dev reload $DEVLINK_DEV
 153 }
 154
 155 ipv4_error_path()
 156 {
 157         # Test the different error paths of the notifiers by limiting the size
 158         # of the "IPv4/fib" resource.
 159         ipv4_error_path_add
 160         ipv4_error_path_replay
 161 }
 162
 163 ipv4_delete_fail()
 164 {
 165         RET=0
 166
 167         echo "y" > $DEBUGFS_DIR/fib/fail_route_delete
 168
 169         ip -n testns1 link add name dummy1 type dummy
 170         ip -n testns1 link set dev dummy1 up
 171
 172         ip -n testns1 route add 192.0.2.0/24 dev dummy1
 173         ip -n testns1 route del 192.0.2.0/24 dev dummy1 &> /dev/null
 174
 175         # We should not be able to delete the netdev if we are leaking a
 176         # reference.
 177         ip -n testns1 link del dev dummy1
 178
 179         log_test "IPv4 route delete failure"
 180
 181         echo "n" > $DEBUGFS_DIR/fib/fail_route_delete
 182 }
 183
 184 ipv6_add()
 185 {
 186         fib_ipv6_add_test "testns1"
 187 }
 188
 189 ipv6_metric()
 190 {
 191         fib_ipv6_metric_test "testns1"
 192 }
 193
 194 ipv6_append_single()
 195 {
 196         fib_ipv6_append_single_test "testns1"
 197 }
 198
 199 ipv6_replace_single()
 200 {
 201         fib_ipv6_replace_single_test "testns1"
 202 }
 203
 204 ipv6_metric_multipath()
 205 {
 206         fib_ipv6_metric_multipath_test "testns1"
 207 }
 208
 209 ipv6_append_multipath()
 210 {
 211         fib_ipv6_append_multipath_test "testns1"
 212 }
 213
 214 ipv6_replace_multipath()
 215 {
 216         fib_ipv6_replace_multipath_test "testns1"
 217 }
 218
 219 ipv6_append_multipath_to_single()
 220 {
 221         fib_ipv6_append_multipath_to_single_test "testns1"
 222 }
 223
 224 ipv6_delete_single()
 225 {
 226         fib_ipv6_delete_single_test "testns1"
 227 }
 228
 229 ipv6_delete_multipath()
 230 {
 231         fib_ipv6_delete_multipath_test "testns1"
 232 }
 233
 234 ipv6_replay_single()
 235 {
 236         fib_ipv6_replay_single_test "testns1" "$DEVLINK_DEV"
 237 }
 238
 239 ipv6_replay_multipath()
 240 {
 241         fib_ipv6_replay_multipath_test "testns1" "$DEVLINK_DEV"
 242 }
 243
 244 ipv6_error_path_add_single()
 245 {
 246         local lsb
 247
 248         RET=0
 249
 250         ip -n testns1 link add name dummy1 type dummy
 251         ip -n testns1 link set dev dummy1 up
 252
 253         devlink -N testns1 resource set $DEVLINK_DEV path IPv6/fib size 10
 254         devlink -N testns1 dev reload $DEVLINK_DEV
 255
 256         for lsb in $(seq 1 20); do
 257                 ip -n testns1 route add 2001:db8:1::${lsb}/128 dev dummy1 \
 258                         &> /dev/null
 259         done
 260
 261         log_test "IPv6 error path - add single"
 262
 263         ip -n testns1 link del dev dummy1
 264 }
 265
 266 ipv6_error_path_add_multipath()
 267 {
 268         local lsb
 269
 270         RET=0
 271
 272         for i in $(seq 1 2); do
 273                 ip -n testns1 link add name dummy$i type dummy
 274                 ip -n testns1 link set dev dummy$i up
 275                 ip -n testns1 address add 2001:db8:$i::1/64 dev dummy$i
 276         done
 277
 278         devlink -N testns1 resource set $DEVLINK_DEV path IPv6/fib size 10
 279         devlink -N testns1 dev reload $DEVLINK_DEV
 280
 281         for lsb in $(seq 1 20); do
 282                 ip -n testns1 route add 2001:db8:10::${lsb}/128 \
 283                         nexthop via 2001:db8:1::2 dev dummy1 \
 284                         nexthop via 2001:db8:2::2 dev dummy2 &> /dev/null
 285         done
 286
 287         log_test "IPv6 error path - add multipath"
 288
 289         for i in $(seq 1 2); do
 290                 ip -n testns1 link del dev dummy$i
 291         done
 292 }
 293
 294 ipv6_error_path_replay()
 295 {
 296         local lsb
 297
 298         RET=0
 299
 300         ip -n testns1 link add name dummy1 type dummy
 301         ip -n testns1 link set dev dummy1 up
 302
 303         devlink -N testns1 resource set $DEVLINK_DEV path IPv6/fib size 100
 304         devlink -N testns1 dev reload $DEVLINK_DEV
 305
 306         for lsb in $(seq 1 20); do
 307                 ip -n testns1 route add 2001:db8:1::${lsb}/128 dev dummy1
 308         done
 309
 310         devlink -N testns1 resource set $DEVLINK_DEV path IPv6/fib size 10
 311         devlink -N testns1 dev reload $DEVLINK_DEV &> /dev/null
 312
 313         log_test "IPv6 error path - replay"
 314
 315         ip -n testns1 link del dev dummy1
 316
 317         # Successfully reload after deleting all the routes.
 318         devlink -N testns1 resource set $DEVLINK_DEV path IPv6/fib size 100
 319         devlink -N testns1 dev reload $DEVLINK_DEV
 320 }
 321
 322 ipv6_error_path()
 323 {
 324         # Test the different error paths of the notifiers by limiting the size
 325         # of the "IPv6/fib" resource.
 326         ipv6_error_path_add_single
 327         ipv6_error_path_add_multipath
 328         ipv6_error_path_replay
 329 }
 330
 331 ipv6_delete_fail()
 332 {
 333         RET=0
 334
 335         echo "y" > $DEBUGFS_DIR/fib/fail_route_delete
 336
 337         ip -n testns1 link add name dummy1 type dummy
 338         ip -n testns1 link set dev dummy1 up
 339
 340         ip -n testns1 route add 2001:db8:1::/64 dev dummy1
 341         ip -n testns1 route del 2001:db8:1::/64 dev dummy1 &> /dev/null
 342
 343         # We should not be able to delete the netdev if we are leaking a
 344         # reference.
 345         ip -n testns1 link del dev dummy1
 346
 347         log_test "IPv6 route delete failure"
 348
 349         echo "n" > $DEBUGFS_DIR/fib/fail_route_delete
 350 }
 351
 352 fib_notify_on_flag_change_set()
 353 {
 354         local notify=$1; shift
 355
 356         ip netns exec testns1 sysctl -qw net.ipv4.fib_notify_on_flag_change=$notify
 357         ip netns exec testns1 sysctl -qw net.ipv6.fib_notify_on_flag_change=$notify
 358
 359         log_info "Set fib_notify_on_flag_change to $notify"
 360 }
 361
 362 setup_prepare()
 363 {
 364         local netdev
 365
 366         modprobe netdevsim &> /dev/null
 367
 368         echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device
 369         while [ ! -d $SYSFS_NET_DIR ] ; do :; done
 370
 371         ip netns add testns1
 372         if [ $? -ne 0 ]; then
 373                 echo "Failed to add netns \"testns1\""
 374                 exit 1
 375         fi
 376
 377         devlink dev reload $DEVLINK_DEV netns testns1
 378         if [ $? -ne 0 ]; then
 379                 echo "Failed to reload into netns \"testns1\""
 380                 exit 1
 381         fi
 382 }
 383
 384 cleanup()
 385 {
 386         pre_cleanup
 387         ip netns del testns1
 388         echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device
 389         modprobe -r netdevsim &> /dev/null
 390 }
 391
 392 trap cleanup EXIT
 393
 394 setup_prepare
 395
 396 fib_notify_on_flag_change_set 1
 397 tests_run
 398
 399 fib_notify_on_flag_change_set 0
 400 tests_run
 401
 402 exit $EXIT_STATUS