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Re: Google Summer of Code 2009 -- Linux wireless roaming project

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> Yes, that's a good idea. There are some more scenarios where
> different roaming algorithms might make sense. However, I'm
> still not sure where the roaming decision should be made (and
> thus where the algorithm should be implemented). In user space
> (wpa_supplicant) or in mac80211. Having it in user space would
> allow non-mac80211-drivers to benefit too but the driver would
> have to provide the necessary information.

User-space is often easier to change *)


However, if you want to use beacon-information, then user-space 
doesn't spring to my mind so quickly. Beacons come in quite 
fast, and I'd if I have to transport all of this to 
user-space ...


Or we divide it: if user-spaces tells the kernel, then the kernel 
maintains a bss-list and whenever the kernel modifies the 
list "considerably", kernel pushes a nl80211 message to 
user-space, notifying it about the new state "once in a while". 
Then data gathering is in kernel, but decision making is in 
user-space. However, we need a good defintion for "considerably" 
and "once in a while", thought :-)





*) EXCEPT if we're talking wpa_supplicant. Not everyone find 
wpa_supplicant easy to modify, because of the number of 
interwoven state-machines and handled corner-cases.
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