[Winpcap-users] Problems with the modified wpcap.dll in Wireshark

[Gianluca Varenni]

The function is implemented in Packet.dll, the sources are in \winpcap\Packetntx\dll\packet32.cpp
It's my understanding that you implemented support for your card directly in wpcap.dll. If so, the p->adapter field is a NULL/bogus pointer, so there Packet API will receive a NULL/bogus pointer!

Have a nice day
GV


  ----- Original Message ----- 
  From: Varuna De Silva 
  To: winpcap-users at winpcap.org ; wireshark-dev at wireshark.org 
  Sent: Wednesday, October 17, 2007 6:29 AM
  Subject: [Winpcap-users] Problems with the modified wpcap.dll in Wireshark


  Hello,

  We have developed our device to capture ss7 traffic on a TDM link.

  Once we start our device, we get this message. 

  " Couldnt set capture buffer size  Size 1MB seems to be too high for your machine 
   default is 1MB  Any way capture started. "

  and it takes some time before the packets are being displayed on the GUI. 

  As I heard it comes with the Win32-only pcap_setbuff() routine not being set
  up to handle add-on capture interfaces such as ours. As I saw this is done by 
  the function PacketSetBuff(p->adapter,dim), which I suspect a function to 
  change the driver behaviour, for which I do not have access. 

  Where is this PacketSetBuff() written?

  If its on user mode and doesnt need the ddk, can I change it so that I can 
  overcome this problem. Or any way I can overcome this! :-)

  My next question is our GUI freezes when a live capture is going, and we are 
  not able to stop the live capture when we need. What could be the problem 
  for this? It keeps on capturing data at some speed around 128kbps. 

  Kind regards 

  Varuna De Silva








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