[Luca Deri <deri@xxxxxxxx>]

Hi Lee,
thanks for the mail.

On Friday, January 24, 2003, at 08:53 PM, Lee Nguyen wrote:

> Hi.  First of all, great job with the MP support.  It's nice to be  
> able to
> use winpcap on my MP machine.  Now, the bugs...
>
> Win2K throws a BSOD when I attempt to send a packet flood using  
> winpcap's
> native API (not the libpcap wrappers).  The BSOD error says
> MULTIPLE_IRP_REQUESTS.  To send the packet flood, I used  
> PacketSetNumWrites
> () to set the iteration to ~10000 and then called PacketSendPacket() to
> send the buffer (buffer<=64bytes).  I then put the PacketSendPacket()  
> code
> in a tight infinite loop.
This patch has been designed for 'read-only' apps like ethereal and  
ntop. The original libpcap does not allow you to inject packets  
although the Win32 port does.


> WinXP (on the same machine via a disk image) seems to prevent my app  
> from
> starting at all.  After a few tries, though, the app can get started  
> but
> then it BSODs with just the STOP code.  I couldn't see any error
> information.
So you basically said that we must work as on XP the patch does not  
work but just on Win2K.

> Test machine environment:
> Win2KPro, WinXPPro
> Dual P3-500 MHz
> 384 MB RAM
> 3Com EtherLink XL 10/100 PCI TX (3C905B-TX) network driver.
>
> I was also able to generate debug logs using DebugView
> (www.sysinternals.com) and crash dumps (less portable I imagine).  I  
> didn't
> know whether to post bugs here or send it to the NTOP guys, so I just  
> sent
> it to everybody.  If there's a specific group that I should send future
> bugs to, please let me know.
You can send it to the ntop list. Personally I hope that the Winpcap  
guys will integrate the patch (at least as experimental code) so that  
the code will be part of the main source tree.

Luca

> |---------+---------------------------->
> |         |           Luca Deri        |
> |         |           <deri@xxxxxxxx>  |
> |         |                            |
> |         |           01/24/2003 12:49 |
> |         |           AM               |
> |         |           Please respond to|
> |         |           winpcap-users    |
> |         |                            |
> |---------+---------------------------->
> > ---------------------------------------------------------------------- 
> > ----------------------------------------|
>   |                                                                     
>                                           |
>   |       To:       winpcap-users@xxxxxxxxxxxxxxxxx, ntop  
> <ntop@xxxxxxxx>                                        |
>   |       cc:       mikem@xxxxxxxxx, ethereal-users@xxxxxxxxxxxx,  
> snortadmin@xxxxxxxxxxxxxx, "Mike Schwarz"      |
>   |        <ctek@xxxxxxx>                                               
>                                           |
>   |       Subject:  [WinPcap-users] Announce: WinPcap MP Support        
>                                           |
> > ---------------------------------------------------------------------- 
> > ----------------------------------------|
>
>
>
>
> Dear all,
> we (Michel Montague and me) have just released a patch for running
> Winpcap 3.X on multiprocessor (MP) machines. This patch allows users to
> run winpcap-based applications such as ntop, nProbe, Ethereal and snort
> on MP machines under Windows.
>
> For more information about this topic please visit
> http://www.ntop.org/winpcap.html. We have tested the patch on Win2K.
> Please report us about other Windows versions.
>
> Have a lot of fun, Luca & Michel
>
> --
> Luca Deri <deri@xxxxxxxx>            http://luca.ntop.org/
> Hacker: someone who loves to program and enjoys being
> clever about it - Richard Stallman
>
>
>
>
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-------
Luca Deri <deri@xxxxxxxx>