* Packet tapping
@ 2001-09-12 9:32 Manoj Sontakke
2001-09-12 9:43 ` Francis Galiegue
0 siblings, 1 reply; 3+ messages in thread
From: Manoj Sontakke @ 2001-09-12 9:32 UTC (permalink / raw)
To: LKML
Hi,
Is it possible to tap a packet and send it to a userlevel program
before it is sent to appropriate receive function (say ip_rcv()). The
user level program will give the packet back to the kernel for delivery
to appropriate receive function.
In short, is it possible to have a protocol stack (between layer 2 and
3) to be implemented in useland.
Is Tun/Tap driver useful here?
Thanks for all the help
Manoj
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Packet tapping
2001-09-12 9:32 Packet tapping Manoj Sontakke
@ 2001-09-12 9:43 ` Francis Galiegue
2001-09-13 5:35 ` Manoj Sontakke
0 siblings, 1 reply; 3+ messages in thread
From: Francis Galiegue @ 2001-09-12 9:43 UTC (permalink / raw)
To: Manoj Sontakke; +Cc: LKML
On Wed, 12 Sep 2001, Manoj Sontakke wrote:
>
> Hi,
> Is it possible to tap a packet and send it to a userlevel program
> before it is sent to appropriate receive function (say ip_rcv()). The
> user level program will give the packet back to the kernel for delivery
> to appropriate receive function.
> In short, is it possible to have a protocol stack (between layer 2 and
> 3) to be implemented in useland.
>
> Is Tun/Tap driver useful here?
>
Isn't the QUEUE driver from iptables done for such cases?
--
Francis Galiegue, fg@mandrakesoft.com - Normand et fier de l'être
"Programming is a race between programmers, who try and make more and more
idiot-proof software, and universe, which produces more and more remarkable
idiots. Until now, universe leads the race" -- R. Cook
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Packet tapping
2001-09-12 9:43 ` Francis Galiegue
@ 2001-09-13 5:35 ` Manoj Sontakke
0 siblings, 0 replies; 3+ messages in thread
From: Manoj Sontakke @ 2001-09-13 5:35 UTC (permalink / raw)
To: Francis Galiegue; +Cc: LKML
Thanks a lot. I was looking for a pointer. I knew its possible but lost
track of "how".
Thnaks again.
Manoj
Francis Galiegue wrote:
>
> On Wed, 12 Sep 2001, Manoj Sontakke wrote:
>
> >
> > Hi,
> > Is it possible to tap a packet and send it to a userlevel program
> > before it is sent to appropriate receive function (say ip_rcv()). The
> > user level program will give the packet back to the kernel for delivery
> > to appropriate receive function.
> > In short, is it possible to have a protocol stack (between layer 2 and
> > 3) to be implemented in useland.
> >
> > Is Tun/Tap driver useful here?
>
> Isn't the QUEUE driver from iptables done for such cases?
^ permalink raw reply [flat|nested] 3+ messages in thread
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