tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
selftests: virtio_net: add initial tests
Introduce initial tests for virtio_net driver. Focus on feature testing
leveraging previously introduced debugfs feature filtering
infrastructure. Add very basic ping and F_MAC feature tests.
To run this, do:
$ make -C tools/testing/selftests/ TARGETS=drivers/net/virtio_net/ run_tests
Run it on a system with 2 virtio_net devices connected back-to-back
on the hypervisor.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Tested-by: Benjamin Poirier <bpoirier@nvidia.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
authored by
Jiri Pirko
and committed by
Paolo Abeni
ccfaed04
dae9dd5f
+249
+1
MAINTAINERS
+1
MAINTAINERS
+1
tools/testing/selftests/Makefile
+1
tools/testing/selftests/Makefile
+15
tools/testing/selftests/drivers/net/virtio_net/Makefile
+15
tools/testing/selftests/drivers/net/virtio_net/Makefile
+131
tools/testing/selftests/drivers/net/virtio_net/basic_features.sh
+131
tools/testing/selftests/drivers/net/virtio_net/basic_features.sh
···
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# See virtio_net_common.sh comments for more details about assumed setup
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ALL_TESTS="
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initial_ping_test
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f_mac_test
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"
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source virtio_net_common.sh
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lib_dir=$(dirname "$0")
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source "$lib_dir"/../../../net/forwarding/lib.sh
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h1=${NETIFS[p1]}
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h2=${NETIFS[p2]}
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h1_create()
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{
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simple_if_init $h1 $H1_IPV4/24 $H1_IPV6/64
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}
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h1_destroy()
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{
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simple_if_fini $h1 $H1_IPV4/24 $H1_IPV6/64
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}
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h2_create()
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{
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simple_if_init $h2 $H2_IPV4/24 $H2_IPV6/64
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}
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h2_destroy()
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{
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simple_if_fini $h2 $H2_IPV4/24 $H2_IPV6/64
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}
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initial_ping_test()
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{
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setup_cleanup
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setup_prepare
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ping_test $h1 $H2_IPV4 " simple"
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}
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f_mac_test()
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{
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RET=0
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local test_name="mac feature filtered"
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virtio_feature_present $h1 $VIRTIO_NET_F_MAC
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if [ $? -ne 0 ]; then
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log_test_skip "$test_name" "Device $h1 is missing feature $VIRTIO_NET_F_MAC."
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return 0
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fi
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virtio_feature_present $h1 $VIRTIO_NET_F_MAC
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if [ $? -ne 0 ]; then
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log_test_skip "$test_name" "Device $h2 is missing feature $VIRTIO_NET_F_MAC."
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return 0
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fi
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setup_cleanup
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setup_prepare
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grep -q 0 /sys/class/net/$h1/addr_assign_type
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check_err $? "Permanent address assign type for $h1 is not set"
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grep -q 0 /sys/class/net/$h2/addr_assign_type
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check_err $? "Permanent address assign type for $h2 is not set"
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setup_cleanup
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virtio_filter_feature_add $h1 $VIRTIO_NET_F_MAC
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virtio_filter_feature_add $h2 $VIRTIO_NET_F_MAC
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setup_prepare
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grep -q 0 /sys/class/net/$h1/addr_assign_type
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check_fail $? "Permanent address assign type for $h1 is set when F_MAC feature is filtered"
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grep -q 0 /sys/class/net/$h2/addr_assign_type
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check_fail $? "Permanent address assign type for $h2 is set when F_MAC feature is filtered"
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ping_do $h1 $H2_IPV4
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check_err $? "Ping failed"
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log_test "$test_name"
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}
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setup_prepare()
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{
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virtio_device_rebind $h1
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virtio_device_rebind $h2
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wait_for_dev $h1
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wait_for_dev $h2
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vrf_prepare
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h1_create
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h2_create
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}
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setup_cleanup()
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{
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h2_destroy
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h1_destroy
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vrf_cleanup
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virtio_filter_features_clear $h1
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virtio_filter_features_clear $h2
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virtio_device_rebind $h1
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virtio_device_rebind $h2
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wait_for_dev $h1
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wait_for_dev $h2
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}
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cleanup()
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{
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pre_cleanup
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setup_cleanup
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}
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check_driver $h1 "virtio_net"
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check_driver $h2 "virtio_net"
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check_virtio_debugfs $h1
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check_virtio_debugfs $h2
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trap cleanup EXIT
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setup_prepare
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tests_run
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exit "$EXIT_STATUS"
+2
tools/testing/selftests/drivers/net/virtio_net/config
+2
tools/testing/selftests/drivers/net/virtio_net/config
+99
tools/testing/selftests/drivers/net/virtio_net/virtio_net_common.sh
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tools/testing/selftests/drivers/net/virtio_net/virtio_net_common.sh
···
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# This assumes running on a host with two virtio interfaces connected
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# back to back. Example script to do such wire-up of tap devices would
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# look like this:
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#
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# =======================================================================================================
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# #!/bin/bash
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#
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# DEV1="$1"
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# DEV2="$2"
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#
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# sudo tc qdisc add dev $DEV1 clsact
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# sudo tc qdisc add dev $DEV2 clsact
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# sudo tc filter add dev $DEV1 ingress protocol all pref 1 matchall action mirred egress redirect dev $DEV2
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# sudo tc filter add dev $DEV2 ingress protocol all pref 1 matchall action mirred egress redirect dev $DEV1
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# sudo ip link set $DEV1 up
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# sudo ip link set $DEV2 up
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# =======================================================================================================
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REQUIRE_MZ="no"
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NETIF_CREATE="no"
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NETIF_FIND_DRIVER="virtio_net"
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NUM_NETIFS=2
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H1_IPV4="192.0.2.1"
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H2_IPV4="192.0.2.2"
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H1_IPV6="2001:db8:1::1"
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H2_IPV6="2001:db8:1::2"
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VIRTIO_NET_F_MAC=5
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virtio_device_get()
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{
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local dev=$1; shift
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local device_path="/sys/class/net/$dev/device/"
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basename `realpath $device_path`
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}
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virtio_device_rebind()
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{
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local dev=$1; shift
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local device=`virtio_device_get $dev`
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echo "$device" > /sys/bus/virtio/drivers/virtio_net/unbind
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echo "$device" > /sys/bus/virtio/drivers/virtio_net/bind
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}
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virtio_debugfs_get()
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{
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local dev=$1; shift
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local device=`virtio_device_get $dev`
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echo /sys/kernel/debug/virtio/$device/
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}
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check_virtio_debugfs()
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{
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local dev=$1; shift
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local debugfs=`virtio_debugfs_get $dev`
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if [ ! -f "$debugfs/device_features" ] ||
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[ ! -f "$debugfs/filter_feature_add" ] ||
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[ ! -f "$debugfs/filter_feature_del" ] ||
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[ ! -f "$debugfs/filter_features" ] ||
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[ ! -f "$debugfs/filter_features_clear" ]; then
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echo "SKIP: not possible to access debugfs for $dev"
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exit $ksft_skip
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fi
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}
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virtio_feature_present()
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{
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local dev=$1; shift
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local feature=$1; shift
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local debugfs=`virtio_debugfs_get $dev`
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cat $debugfs/device_features |grep "^$feature$" &> /dev/null
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return $?
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}
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virtio_filter_features_clear()
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{
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local dev=$1; shift
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local debugfs=`virtio_debugfs_get $dev`
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echo "1" > $debugfs/filter_features_clear
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}
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virtio_filter_feature_add()
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{
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local dev=$1; shift
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local feature=$1; shift
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local debugfs=`virtio_debugfs_get $dev`
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echo "$feature" > $debugfs/filter_feature_add
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}