Re: Adding interface to wpcap/libpcap for sending packets to Rx path

[Yang Luo <hsluoyb () gmail com>]

Hi Guy,


On Thu, Jan 14, 2016 at 2:00 AM, Guy Harris <guy () alum mit edu> wrote:

> On Jan 13, 2016, at 8:16 AM, Yang Luo <hsluoyb () gmail com> wrote:
>
> > I want to implement a feature that Npcap can send packets to Rx (receive
> path) instead of the current Tx (send path).
>
> What do you mean by "send packets to the receive path"?
>
> Does that mean that a packet "sent" to the receive path is *not*
> transmitted on the network interface, but, instead, appears as if it were a
> packet that had arrived on that interface (and is processed by the Windows
> networking stack)?

Yes, this is exactly what I want.


> If so, then...
>
> > I know how to implement this in the driver layer. But I don't know how
> to add this interface to wpcap.dll. I don't want to change too much like
> adding a function call. What's the best practice to do this? Thanks.
>
> ...it is *completely unrelated* to anything libpcap/WinPcap currently
> does, and therefore *should* be done with a new function call.

I admit injecting packets into the receive path is a bit weird, but there's
a guy asking for an adapter forwarding function, and I believe adding such
a injecting means is a solution for him. Maybe there's a better way to do
this job. I will forward his mail here.

Cheers,
Yang


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