New wpa_supplicand dbus API proposal

Witold Sowa witold.sowa at gmail.com
Wed Jun 17 13:16:40 EDT 2009


Dan Williams pisze:
> On Tue, 2009-06-16 at 23:16 +0200, Marcel Holtmann wrote:
>   
>> Hi Dan,
>>
>>     
>>>>> O:
>>>>> /fi/w1.wpa_supplicant1/Interfaces/<interface_number>/Networks/<network_number>
>>>>> I: fi.w1.wpa_supplicant1.Interface.Network
>>>>>
>>>>> P: Enabled (read/write) -> b
>>>>> P: <wpa_supplicant network block properties> (read/write) -> a{sv}
>>>>>      - Most properties can be set as strings, but can also be set
>>>>>        as a byte array if necessary (SSID, BSSID, PSK, etc).  Supplicant
>>>>>        can autoconvert like it does right now.
>>>>>
>>>>> S: PropertiesChanged -> a{sv}
>>>>>           
>>>> So what is the difference between Enabled and SelectNetwork() call. This
>>>> differentiation confused the hell out of me already with the current
>>>> code. Why do we bother here at all.
>>>>
>>>> Lets just use SelectNetwork() to switch between networks and forget
>>>> about Enabled stuff. If some network should not be in the list, then
>>>> just lets use RemoveNetwork().
>>>>         
>>> If we were to just use SelectNetwork(), how would we completely
>>> disconnect the supplicant and tell it to stop doing anything?  We could
>>> make SelectNetwork with a blank object path do that for us.
>>>       
>> yeah and that is not gonna work out. D-Bus doesn't allow an empty object
>> path.
>>     
>
> Sorry, I really meant "/" not blank.
>   
I don't like any kind of magical meaning arguments like the "/" path
meaning "select no network", so I think that it's ok if we'll stick to
enable/disable methods.
>   
>>> BTW, enabled/disabled is what allows the supplicant to make the roaming
>>> decisions for us, so while it doesn't get used by NM right *now*, maybe
>>> we want to push that sort of thing to the supplicant in the future.
>>> Currently NM only enables one network at a time.
>>>       
>> So personally I think every network we add is part of our roaming
>> agreement. If we don't want it anymore, we have to remove the network
>> again. That way we keep it simple.
>>
>> Maybe we should not have a SelectNetwork at all. Just add/remove
>> networks and then have a global on/off switch on the Interface
>> interface.
>>     
>
> That's fine by me.
>
> Dan
>
>
>   

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