*/
package jcifs.internal.smb2.rdma;

/**
 * Constants for RDMA capabilities and default configuration values.
 * Based on MS-SMBD specification for SMB Direct protocol.
 */
public class RdmaCapabilities {

    /**
     * RDMA transform capabilities flag indicating response is requested
     */
    public static final int SMB_DIRECT_RESPONSE_REQUESTED = 0x00000001;

    /**

    private int maxVersion = MAX_VERSION;
    private int reserved = 0;
    private int creditsRequested = RdmaCapabilities.DEFAULT_SEND_CREDIT_TARGET;
    private int preferredSendSize = RdmaCapabilities.DEFAULT_MAX_RECEIVE_SIZE;
    private int maxReceiveSize = RdmaCapabilities.DEFAULT_MAX_RECEIVE_SIZE;
    private int maxFragmentedSize = RdmaCapabilities.DEFAULT_MAX_FRAGMENTED_SIZE;

    /**
     * Create SMB Direct Negotiate Request
     */

        this.maxVersion = 0x0100; // SMB Direct 1.0
        this.creditsRequested = RdmaCapabilities.DEFAULT_SEND_CREDIT_TARGET;
        this.preferredSendSize = RdmaCapabilities.DEFAULT_MAX_RECEIVE_SIZE;
        this.maxReceiveSize = RdmaCapabilities.DEFAULT_MAX_RECEIVE_SIZE;
        this.maxFragmentedSize = RdmaCapabilities.DEFAULT_MAX_FRAGMENTED_SIZE;
    }

    /**
     * Get minimum protocol version
     *

        this.selectedVersion = 0x0100; // SMB Direct 1.0
        this.creditsGranted = 0;
        this.maxReceiveSize = RdmaCapabilities.DEFAULT_MAX_RECEIVE_SIZE;
        this.maxReadWriteSize = RdmaCapabilities.DEFAULT_MAX_READ_WRITE_SIZE;
        this.maxFragmentedSize = RdmaCapabilities.DEFAULT_MAX_FRAGMENTED_SIZE;
    }

    /**
     * Check if negotiation was successful
     *

        this.creditsGranted = 0;
        this.creditsRequested = RdmaCapabilities.DEFAULT_SEND_CREDIT_TARGET;
        this.maxReadWriteSize = RdmaCapabilities.DEFAULT_MAX_READ_WRITE_SIZE;
        this.preferredSendSize = RdmaCapabilities.DEFAULT_MAX_RECEIVE_SIZE;
        this.maxReceiveSize = RdmaCapabilities.DEFAULT_MAX_RECEIVE_SIZE;
        this.maxFragmentedSize = RdmaCapabilities.DEFAULT_MAX_FRAGMENTED_SIZE;
    }

    /**

        this.receiveCredits = new AtomicInteger(RdmaCapabilities.DEFAULT_RECEIVE_CREDIT_MAX);
        this.pendingRequests = new LinkedBlockingQueue<>();
        this.state = RdmaConnectionState.DISCONNECTED;
        this.maxFragmentedSize = RdmaCapabilities.DEFAULT_MAX_FRAGMENTED_SIZE;
        this.maxReadWriteSize = RdmaCapabilities.DEFAULT_MAX_READ_WRITE_SIZE;
    }
    
    /**

        this.receiveCredits = new AtomicInteger(RdmaCapabilities.DEFAULT_RECEIVE_CREDIT_MAX);
        this.pendingRequests = new LinkedBlockingQueue<>();
        this.state = RdmaConnectionState.DISCONNECTED;
        this.maxFragmentedSize = RdmaCapabilities.DEFAULT_MAX_FRAGMENTED_SIZE;
        this.maxReadWriteSize = RdmaCapabilities.DEFAULT_MAX_READ_WRITE_SIZE;
    }

    /**
     * Establish RDMA connection

public class RdmaCredits {

    private int initialCredits;
    private int creditsGranted;

    /**
     * Create new RDMA credits manager
     */
    public RdmaCredits() {
        this.initialCredits = RdmaCapabilities.DEFAULT_SEND_CREDIT_TARGET;
        this.creditsGranted = 0;
    }

    /**
     * Get initial number of credits to request
     *
     * @return initial credits
     */