Re: [PATCH V2 0/9] nl80211: add support for PTK/GTK handshake offload

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On 18-5-2017 11:22, Johannes Berg wrote:
> On Thu, 2017-05-18 at 10:18 +0200, Arend Van Spriel wrote:
>>
>>> We should therefore probably set the expectation that wpa_s - if
>>> it's new enough - always uses the offloaded functionality and
>>> always sets the WANT_1X. Then this is even better with such
>>> drivers, since they can immediately reject the connect() command if
>>> want_1x isn't set.

Getting back at this. With "always" you mean for every connect()
regardless whether it is using 1X or PSK?

>> Personally I am fine with this and it is how I tested it. So no
>> network configuration or driver parameter in wpa_s.conf (mainly
>> because I am lazy ;-) ). However, if the driver supports both offload
>> and non-offload why not leave it up to user-space. Might be useful if
>> people can try either way for example when debugging connection
>> issues.
> 
> If that should be possible though, then we'd probably want to have
> feature bit both ways, otherwise we'll probably get hard-to-debug
> failures at some point with this?

You mean adding a nl80211 command in which user-space can indicate what
features it supports? Do you want to use the same feature bits on both
sides to easily determine the combined feature set? ext_feature does not
really have much overlapping so not sure if it adds value.

Regards,
Arend




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