public uint Smb2Read(
UInt64 offset,
uint byteCount,
out byte[] readData,
out READ_Response readResponse
)
{
ushort creditCharge = (ushort)(1 + ((byteCount - 1) / 65535));
RequestCreditsFromSmb2Server(creditCharge);
uint status = this.Read(
(ushort)creditCharge,
64,
Packet_Header_Flags_Values.FLAGS_SIGNED,
this.messageId,
this.sessionId,
this.TreeId,
byteCount,
0,
this.FileId,
0,
Channel_Values.CHANNEL_NONE,
0,
new byte[0],
out readData,
out packetHeader,
out readResponse
);
CalculateSmb2AvailableCredits(creditCharge, packetHeader.CreditRequestResponse);
return(status);
}
public uint Smb2ReadOverRdmaChannel(
UInt64 offset,
uint byteCount,
byte[] channelBuffer,
out READ_Response readResponse,
out byte[] readData,
Channel_Values channel = Channel_Values.CHANNEL_RDMA_V1
)
{
ushort creditCharge = CalculateCreditCharge(byteCount);
RequestCreditsFromSmb2Server(creditCharge);
uint status = this.Read(
(ushort)creditCharge,
64,
Packet_Header_Flags_Values.FLAGS_SIGNED,
this.messageId,
this.sessionId,
this.TreeId,
byteCount,
offset,
this.FileId,
0,
channel,
0,
channelBuffer,
out readData,
out packetHeader,
out readResponse
);
CalculateSmb2AvailableCredits(creditCharge, packetHeader.CreditRequestResponse);
return(status);
}
/// <summary>
/// Receive and validate SMB2 Read Response
/// </summary>
/// <param name="readResponseSize">Size of SMB2 read response</param>
public void ValidateReadResponse(int credits, int readResponseSize)
{
// receive read response, maybe in several SMBDirect data transfer messages
SmbdDataTransferMessage transferPackage = new SmbdDataTransferMessage();
byte[] readResponsePacket = new byte[readResponseSize];
int offset = 0;
NtStatus status;
while (offset < readResponseSize)
{
while (smbdAdapter.ClientConnection.ReceiveCredits > 0)
{
status = (NtStatus)smbdAdapter.SmbdReceivDataTransferMessage(
smbdAdapter.TestConfig.Smb2ConnectionTimeout,
out transferPackage
);
BaseTestSite.Log.Add(
LogEntryKind.Debug,
"Received a SMBDirect Data Transfer message, current Connection.ReceiveCredits is {0}", smbdAdapter.ClientConnection.ReceiveCredits);
#region Assert
BaseTestSite.Assert.AreEqual <NtStatus>(
NtStatus.STATUS_SUCCESS,
status,
"Received SMBDirect Data Transfer Message with status {0}", status);
BaseTestSite.Assert.AreEqual <uint>(
(uint)(readResponseSize - offset),
transferPackage.DataLength + transferPackage.RemainingDataLength,
"Received SMBDirect Data Transfer Message: DataLength {0}, RemainingDataLength {1}", transferPackage.DataLength, transferPackage.RemainingDataLength);
BaseTestSite.Assert.AreEqual <uint>(
0,
transferPackage.DataOffset % 8,
"Received SMBDirect Data Transfer Message: DataOffset {0}, which should be 8-byte aligned", transferPackage.DataOffset);
#endregion
Array.Copy(transferPackage.Buffer, 0, readResponsePacket, offset, transferPackage.DataLength);
offset += (int)transferPackage.DataLength;
if (transferPackage.RemainingDataLength == 0)
{
break;
}
}
BaseTestSite.Assert.IsTrue(transferPackage.CreditsGranted > 0,
"SMBDirect Data Tranfer message with last credit should with CreditsGranted greater than 0");
#region send empty message to grant credit
status = NtStatus.STATUS_SUCCESS;
do
{
status = smbdAdapter.SmbdPostReceive();
}while (status == NtStatus.STATUS_SUCCESS &&
smbdAdapter.ClientConnection.ReceiveCredits < credits);
// check receive queue before sending
BaseTestSite.Assert.AreEqual <int>(
0,
smbdAdapter.ReceiveEntryInQueue,
"No message should be sent from server");
smbdAdapter.SmbdSendDataTransferMessage(
smbdAdapter.ClientConnection.SendCreditTarget,
(ushort)smbdAdapter.ClientConnection.ReceiveCredits,
SmbdDataTransfer_Flags.NONE,
0,
0,
0,
new byte[0]);
BaseTestSite.Log.Add(
LogEntryKind.Debug,
"Grant {0} credits to peer, current Connection.ReceiveCredits is {0}", smbdAdapter.ClientConnection.ReceiveCredits);
#endregion
}
#region Decode SMB2 READ response and validate
object endpoint = new object();
int consumedLength;
int expectedLength;
StackPacket[] stackPackets = smbdAdapter.Decoder.Smb2DecodePacketCallback(
endpoint,
readResponsePacket,
out consumedLength,
out expectedLength);
Smb2ReadResponsePacket package = (Smb2ReadResponsePacket)stackPackets[0];
READ_Response readResponse = package.PayLoad;
BaseTestSite.Assert.AreEqual <NtStatus>(
NtStatus.STATUS_SUCCESS,
(NtStatus)package.Header.Status,
"Status of SMB2 Read File is {0}", (NtStatus)package.Header.Status);
#endregion
}
