// Write Command = SMB2_IOCTL (0x000B) at offset 12
        SMBUtil.writeInt2(0x000B, hdr, 12);
        // Mark as server response to be realistic (optional)
        SMBUtil.writeInt4(0x00000001, hdr, 16); // Flags = SMB2_FLAGS_SERVER_TO_REDIR
        return hdr;
    }

    // Helper: build SMB2 IOCTL response body (without header) with structureSize=49

    private static final byte[] CONTEXT_NAME_BYTES = NAME_DIRECTORY_REQUEST.getBytes();

    /**
     * Directory lease flag for recursive caching
     */
    public static final int DIRECTORY_LEASE_FLAG_RECURSIVE = 0x00000001;

    /**
     * Directory lease flag for enabling notifications
     */
    public static final int DIRECTORY_LEASE_FLAG_NOTIFICATIONS = 0x00000002;

    private Smb2LeaseKey leaseKey;

                // NetApp doesn't like the 'generic' access mask values
                try (LsaPolicyHandle policyHandle = new LsaPolicyHandle(handle, null, 0x00000001)) {
                    rpc = new MsrpcQueryInformationPolicy(policyHandle, (short) lsarpc.POLICY_INFO_ACCOUNT_DOMAIN, info);
                    handle.sendrecv(rpc);
                    if (rpc.retval != 0) {

     */
    private static byte[] buildSmb2Header() {
        byte[] header = Arrays.copyOf(SMBUtil.SMB2_HEADER, SMBUtil.SMB2_HEADER.length);
        // Mark as server->client response for realism
        SMBUtil.writeInt4(0x00000001, header, 16); // Flags
        // Command SMB2_CREATE (0x0005)
        SMBUtil.writeInt2(0x0005, header, 12);
        // Some message id
        SMBUtil.writeInt8(1L, header, 24);
        return header;
    }

    FAST_REGISTRATION   // Fast memory region registration
}

public class RdmaCapabilities {
    // RDMA transform capabilities
    public static final int SMB_DIRECT_RESPONSE_REQUESTED = 0x00000001;
    
    // Default RDMA settings
    public static final int DEFAULT_RDMA_READ_WRITE_SIZE = 1048576;  // 1MB
    public static final int DEFAULT_RECEIVE_CREDIT_MAX = 255;

        }

        @Test
        @DisplayName("Should set SMB2_FLAGS_SIGNED flag")
        void testSignSetsSignedFlag() {
            // Set initial flags without signed flag
            int initialFlags = 0x00000001;
            SMBUtil.writeInt4(initialFlags, data, 16);

            digest.sign(data, 0, data.length, request, response);

            int flags = SMBUtil.readInt4(data, 16);

        assertEquals(null, storedFileId);
    }

    @Test
    @DisplayName("setCloseFlags should update close flags")
    void testSetCloseFlags() throws Exception {
        int testFlags = 0x00000001; // SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB
        request.setCloseFlags(testFlags);

        Field closeFlagsField = Smb2CloseRequest.class.getDeclaredField("closeFlags");
        closeFlagsField.setAccessible(true);

    }

    @ParameterizedTest
    @DisplayName("Test ServerInfo1 getType with various server types")
    @CsvSource({ "0x00000000, " + SmbConstants.TYPE_SERVER, "0x00000001, " + SmbConstants.TYPE_SERVER,
            "0x00000801, " + SmbConstants.TYPE_SERVER, "0x80000000, " + SmbConstants.TYPE_WORKGROUP,

    protected static final short SMB2_OPLOCK_BREAK = 0x0012;

    /**
     * Flag indicating the message is a response from server to client.
     */
    public static final int SMB2_FLAGS_SERVER_TO_REDIR = 0x00000001;
    /**
     * Flag indicating this is an asynchronous command.
     */
    public static final int SMB2_FLAGS_ASYNC_COMMAND = 0x00000002;
    /**

    private boolean ipv6;
    private boolean rssCapable;  // Receive Side Scaling
    private boolean rdmaCapable;
    
    // Capability flags
    public static final int NETWORK_INTERFACE_CAP_RSS = 0x00000001;
    public static final int NETWORK_INTERFACE_CAP_RDMA = 0x00000002;
    
    public NetworkInterfaceInfo(InetAddress address, int linkSpeed) {
        this.address = address;
        this.linkSpeed = linkSpeed;