1 files changed, 63 insertions, 0 deletions
diff --git a/tools/testing/selftests/rdma/rxe_test_NETDEV_UNREGISTER.sh b/tools/testing/selftests/rdma/rxe_test_NETDEV_UNREGISTER.sh
new file mode 100755
index 000000000000..021ca451499d
--- /dev/null
+++ b/tools/testing/selftests/rdma/rxe_test_NETDEV_UNREGISTER.sh
@@ -0,0 +1,63 @@
+#!/bin/bash
+
+# Configuration
+DEV_NAME="tun0"
+RXE_NAME="rxe0"
+RDMA_PORT=4791
+
+exec > /dev/null
+
+# --- Cleanup Routine ---
+# Ensures environment is clean even if the script hits an error
+cleanup() {
+    echo "Performing cleanup..."
+    rdma link del $RXE_NAME 2>/dev/null
+    ip link del $DEV_NAME 2>/dev/null
+    modprobe -r rdma_rxe 2>/dev/null
+}
+trap cleanup EXIT
+
+# 1. Dependency Check
+if ! modinfo rdma_rxe >/dev/null 2>&1; then
+    echo "Error: rdma_rxe module not found."
+    exit 1
+fi
+
+modprobe rdma_rxe
+
+# 2. Setup TUN Device
+echo "Creating $DEV_NAME..."
+ip tuntap add mode tun "$DEV_NAME"
+ip addr add 1.1.1.1/24 dev "$DEV_NAME"
+ip link set "$DEV_NAME" up
+
+# 3. Attach RXE Link
+echo "Attaching RXE link $RXE_NAME to $DEV_NAME..."
+rdma link add "$RXE_NAME" type rxe netdev "$DEV_NAME"
+
+# 4. Verification: Port Check
+# Use -H (no header) and -q (quiet) for cleaner scripting logic
+if ! ss -Huln sport == :$RDMA_PORT | grep -q ":$RDMA_PORT"; then
+    echo "Error: UDP port $RDMA_PORT is not listening."
+    exit 1
+fi
+echo "Verified: RXE is listening on UDP $RDMA_PORT."
+
+# 5. Trigger NETDEV_UNREGISTER
+# We delete the underlying device without deleting the RDMA link first.
+echo "Triggering NETDEV_UNREGISTER by deleting $DEV_NAME..."
+ip link del "$DEV_NAME"
+
+# 6. Final Verification
+# The RXE link and the UDP port should be automatically cleaned up by the kernel.
+if rdma link show "$RXE_NAME" 2>/dev/null; then
+    echo "Error: $RXE_NAME still exists after netdev removal."
+    exit 1
+fi
+
+if ss -Huln sport == :$RDMA_PORT | grep -q ":$RDMA_PORT"; then
+    echo "Error: UDP port $RDMA_PORT still listening after netdev removal."
+    exit 1
+fi
+
+echo "Success: NETDEV_UNREGISTER handled correctly."