HEAD UP: non-MPSAFE network drivers to be disabled

[Julian Elischer]

Marcel Moolenaar wrote:
> 
> On May 27, 2008, at 10:50 AM, Julian Elischer wrote:
> 
>> Marcel Moolenaar wrote:
>>> On May 27, 2008, at 1:12 AM, Julian Elischer wrote:
>>>> judging by the bug reports when things get broken there are still a
>>>> lot of people connected to the internet via dial up lines in places
>>>> off the beaten track, and still a lot of people who when travelling
>>>> do use dialup still. Some of these also use mpd. I can not say how 
>>>> many plan to keep using this in the future but it may be that the 
>>>> simplest answer is a completely separate sio driver that
>>>> just has netgraph hooks. I haven't talked with Ed yet but there
>>>> may be may ways to solve this problem.
>>> Take a look at uart(4). It has been designed to allow different
>>> kernel interfaces. It currently supports TTYs and keyboards. It
>>> should not be too hard to have it hook into netgraph.
>>> FYI,
>>
>>
>> While this is a good idea on it's own, the difference between
>> what that achieves and what a line discipline achieves is that
>> a line disciplin is hardware independent and can even be used
>> on a virtual device.
> 
> True, but you said:
> "... the simplest answer is a completely separate sio driver...".
> 
> This, besides not being true, is just as hardware dependent as
> uart(4) is. It seems to me that you've conveniently changed the
> subject to match your point of view :-)


yep :-)

we need to decide if the aim is to support just serial
ports or any 'tty'.