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selftests: net: use netdevsim in netns test

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Netdevsim has extra register_netdevice_notifier_dev_net notifiers,
use netdevim instead of dummy device to test them out.

Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250401163452.622454-9-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Stanislav Fomichev 2025-04-01 09:34:49 -07:00 committed by Jakub Kicinski
parent ee705fa21f
commit 56c8a23f8a
2 changed files with 34 additions and 4 deletions
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25
tools/testing/selftests/net/lib.sh
View File

@ -222,6 +222,31 @@ setup_ns()
NS_LIST+=("${ns_list[@]}")
}
# Create netdevsim with given id and net namespace.
create_netdevsim() {
local id="$1"
local ns="$2"
modprobe netdevsim &> /dev/null
udevadm settle
echo "$id 1" | ip netns exec $ns tee /sys/bus/netdevsim/new_device >/dev/null
local dev=$(ip netns exec $ns ls /sys/bus/netdevsim/devices/netdevsim$id/net)
ip -netns $ns link set dev $dev name nsim$id
ip -netns $ns link set dev nsim$id up
echo nsim$id
}
# Remove netdevsim with given id.
cleanup_netdevsim() {
local id="$1"
if [ -d "/sys/bus/netdevsim/devices/netdevsim$id/net" ]; then
echo "$id" > /sys/bus/netdevsim/del_device
fi
}
tc_rule_stats_get()
{
local dev=$1; shift

13
tools/testing/selftests/net/netns-name.sh
View File

@ -7,10 +7,12 @@ set -o pipefail
DEV=dummy-dev0
DEV2=dummy-dev1
ALT_NAME=some-alt-name
NSIM_ADDR=2025
RET_CODE=0
cleanup() {
cleanup_netdevsim $NSIM_ADDR
cleanup_ns $NS $test_ns
}
@ -25,12 +27,15 @@ setup_ns NS test_ns
#
# Test basic move without a rename
# Use netdevsim because it has extra asserts for notifiers.
#
ip -netns $NS link add name $DEV type dummy || fail
ip -netns $NS link set dev $DEV netns $test_ns ||
nsim=$(create_netdevsim $NSIM_ADDR $NS)
ip -netns $NS link set dev $nsim netns $test_ns ||
fail "Can't perform a netns move"
ip -netns $test_ns link show dev $DEV >> /dev/null || fail "Device not found after move"
ip -netns $test_ns link del $DEV || fail
ip -netns $test_ns link show dev $nsim >> /dev/null ||
fail "Device not found after move"
cleanup_netdevsim $NSIM_ADDR
#
# Test move with a conflict