I want to take aт existing, a standard or one of the popular ones, WiFi driver for Linux and tweak it. I’ll inroduce a whitelist into it. That is, to the consumer a driver will show the networks from a whitelist only ignoring all other ones.
It’s a PoC. I want to implement it as simply as possible.
Can this be implemented? And how, in a high level?
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Well here’s the AP scan code for the Intel WiFi driver: https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes.git/tree/net/wireless/scan.c
Go though the occurrences of
SSIDand decide whether you need to add some code to check it before continuing for each one.Then you can either compile a whole new kernel, or setup dkms to dynamically load the module in.