According to TCP4->Receive() protocol definition in UEFI spec, once the receive
operation completes, the receive token will be signaled; if the received data
size is smaller than the receive buffer length, the DataLength field will be
updated to record the full length of received data.
When you say the machine becomes unresponsive, do you mean the receive token is
not signaled in the case?
And for your reference, there is a DxeTcpIoLib in MdeModulePkg which implements
a TcpIoReceive based on TCP->Receive API.
Best Regards,
Ye Ting
From: David Satfire [mailto:dsatf...@gmail.com]
Sent: Thursday, August 07, 2014 5:07 AM
To: edk2-devel@lists.sourceforge.net
Subject: [edk2] TCP4 issues on Intel(R) Desktop Board DQ77MK UEFI 2.3.1
Development Kit
Hello,
I'm currently developing UEFI applications and using the Intel® Desktop Board
DQ77MK UEFI 2.3.1 Development Kit(UDK2010) for testing. I'm having some issues
while attempting to receive data from the network. Specifically, when calling
Tcp4->Receive with a DataLength and FragmentBuffer larger than the amount of
data in the received packet the machine becomes unresponsive. Currently, I am
able to work around this issue by calling Tcp4->Receive for one byte at a time,
but this is neither efficient nor applicable for my intentions. Has anyone else
run into this issue before or have any inkling to what may be the root cause of
this behavior? Your help would be greatly appreciated.
Thank you,
David Cannady
Def-Logix
dsatf...@gmail.com<mailto:dsatf...@gmail.com>
dcann...@def-logix.com<mailto:dcann...@def-logix.com>
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