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Mike Kershaw wrote:
>>Looks very interesting, but I had in mind exactly the opposite (if I
>>understand correctly): packets written to the virtual device would be
>>received by the kernel, instead of going out to the radio. The kernel
>>would think it had a real wireless device. So this would be independent
>>of hardware (in fact no wireless hardware is necessary).
> 
> I think the problem with that idea lies in the linktype handling.  Linux
> doesn't currently talk 802.11 -- all the wireless drivers turn the
> packets into 802.3 before they hit the kernel layer.

I'm looking at the wireless development tree, let's say with the
Devicescape stack. A virtual wireless device, using this stack, should
be able to inject 802.11 frames. Such a "wltap" driver would be
analogous to tuntap but at the 802.11 level.

> One of the goals for the stack in the future is, I believe, supporting
> 802.11 linktypes.

Ok, in that case it could be even simpler.

Marcus
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