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selftests: net: add very basic test for netdev names and namespaces

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Add selftest for fixes around naming netdevs and namespaces.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jakub Kicinski 2023-10-17 18:38:17 -07:00 committed by Paolo Abeni
parent 8e15aee621
commit 3920431d98
2 changed files with 88 additions and 0 deletions
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1
tools/testing/selftests/net/Makefile
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@ -34,6 +34,7 @@ TEST_PROGS += gro.sh
TEST_PROGS += gre_gso.sh
TEST_PROGS += cmsg_so_mark.sh
TEST_PROGS += cmsg_time.sh cmsg_ipv6.sh
TEST_PROGS += netns-name.sh
TEST_PROGS += srv6_end_dt46_l3vpn_test.sh
TEST_PROGS += srv6_end_dt4_l3vpn_test.sh
TEST_PROGS += srv6_end_dt6_l3vpn_test.sh

87
tools/testing/selftests/net/netns-name.sh Executable file
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@ -0,0 +1,87 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
set -o pipefail
NS=netns-name-test
DEV=dummy-dev0
DEV2=dummy-dev1
ALT_NAME=some-alt-name
RET_CODE=0
cleanup() {
ip netns del $NS
}
trap cleanup EXIT
fail() {
echo "ERROR: ${1:-unexpected return code} (ret: $_)" >&2
RET_CODE=1
}
ip netns add $NS
#
# Test basic move without a rename
#
ip -netns $NS link add name $DEV type dummy || fail
ip -netns $NS link set dev $DEV netns 1 ||
fail "Can't perform a netns move"
ip link show dev $DEV >> /dev/null || fail "Device not found after move"
ip link del $DEV || fail
#
# Test move with a conflict
#
ip link add name $DEV type dummy
ip -netns $NS link add name $DEV type dummy || fail
ip -netns $NS link set dev $DEV netns 1 2> /dev/null &&
fail "Performed a netns move with a name conflict"
ip link show dev $DEV >> /dev/null || fail "Device not found after move"
ip -netns $NS link del $DEV || fail
ip link del $DEV || fail
#
# Test move with a conflict and rename
#
ip link add name $DEV type dummy
ip -netns $NS link add name $DEV type dummy || fail
ip -netns $NS link set dev $DEV netns 1 name $DEV2 ||
fail "Can't perform a netns move with rename"
ip link del $DEV2 || fail
ip link del $DEV || fail
#
# Test dup alt-name with netns move
#
ip link add name $DEV type dummy || fail
ip link property add dev $DEV altname $ALT_NAME || fail
ip -netns $NS link add name $DEV2 type dummy || fail
ip -netns $NS link property add dev $DEV2 altname $ALT_NAME || fail
ip -netns $NS link set dev $DEV2 netns 1 2> /dev/null &&
fail "Moved with alt-name dup"
ip link del $DEV || fail
ip -netns $NS link del $DEV2 || fail
#
# Test creating alt-name in one net-ns and using in another
#
ip -netns $NS link add name $DEV type dummy || fail
ip -netns $NS link property add dev $DEV altname $ALT_NAME || fail
ip -netns $NS link set dev $DEV netns 1 || fail
ip link show dev $ALT_NAME >> /dev/null || fail "Can't find alt-name after move"
ip -netns $NS link show dev $ALT_NAME 2> /dev/null &&
fail "Can still find alt-name after move"
ip link del $DEV || fail
echo -ne "$(basename $0) \t\t\t\t"
if [ $RET_CODE -eq 0 ]; then
echo "[ OK ]"
else
echo "[ FAIL ]"
fi
exit $RET_CODE