1 files changed, 87 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/netns-name.sh b/tools/testing/selftests/net/netns-name.sh
new file mode 100755
index 000000000000..6974474c26f3
--- /dev/null
+++ b/tools/testing/selftests/net/netns-name.sh
@@ -0,0 +1,87 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+source lib.sh
+set -o pipefail
+
+DEV=dummy-dev0
+DEV2=dummy-dev1
+ALT_NAME=some-alt-name
+
+RET_CODE=0
+
+cleanup() {
+    cleanup_ns $NS $test_ns
+}
+
+trap cleanup EXIT
+
+fail() {
+    echo "ERROR: ${1:-unexpected return code} (ret: $_)" >&2
+    RET_CODE=1
+}
+
+setup_ns NS test_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 $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
+
+#
+# Test move with a conflict
+#
+ip -netns $test_ns link add name $DEV type dummy
+ip -netns $NS link add name $DEV type dummy || fail
+ip -netns $NS link set dev $DEV netns $test_ns 2> /dev/null &&
+    fail "Performed a netns move with a name conflict"
+ip -netns $test_ns link show dev $DEV >> /dev/null || fail "Device not found after move"
+ip -netns $NS link del $DEV || fail
+ip -netns $test_ns link del $DEV || fail
+
+#
+# Test move with a conflict and rename
+#
+ip -netns $test_ns link add name $DEV type dummy
+ip -netns $NS link add name $DEV type dummy || fail
+ip -netns $NS link set dev $DEV netns $test_ns name $DEV2 ||
+    fail "Can't perform a netns move with rename"
+ip -netns $test_ns link del $DEV2 || fail
+ip -netns $test_ns link del $DEV || fail
+
+#
+# Test dup alt-name with netns move
+#
+ip -netns $test_ns link add name $DEV type dummy || fail
+ip -netns $test_ns 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 $test_ns 2> /dev/null &&
+    fail "Moved with alt-name dup"
+
+ip -netns $test_ns 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 $test_ns || fail
+ip -netns $test_ns 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 -netns $test_ns 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