Alexander Pevzner wrote:
Hi Alexander -
I still like that idea but I realized it will live or die based on if
people are taking it up and there is someone nearby to talk to. That
means making as simple a system as possible so that Windows users can
consider to maybe upgrade their Wifi driver and run a usermode app to
participate. Because these are the people around us, they have the
devices, they have power, they have an OS, they just need a little bit
of driver change and they can all participate.
The very natural question: where these modified drivers will come from?
Please note, 802.11 chipsets manufactures are very rigid in disclosing
their driver sources, even under NDA.
There are two possibilities I can imagine:
- Someone will figure out a way to do it without driver meddling. For
example, if the crypto is done by the 80211 stack as it is in many
drivers currently, a single patch to the 80211 stack to disable crypto
for the "Magic MAC" packets, and the technique of simply directing
"Magic MAC" packets to the AP, and another patch to filter promiscuous
mode might do it for many wifi cards
- The manufacturers might want to add it themselves once it is proven
and well specified. It costs almost nothing to them but is quite an
attractive feature to the customer.
-Andy
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