Messages in this thread | | | Date | Sun, 4 Sep 2005 18:41:46 +0200 (CEST) | From | Grzegorz Kulewski <> | Subject | Re: [ATMSAR] Request for review - update #1 |
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On Sun, 4 Sep 2005, Alistair John Strachan wrote:
> On Sunday 04 September 2005 12:05, Giampaolo Tomassoni wrote: >> Dears, >> >> thanks to Jiri Slaby who found a bug in the AAL0 handling of the ATMSAR >> module. >> >> I attach a fixed version of the atmsar patch as a diff against the 2.6.13 >> kernel tree. >> > [snip] > > Just out of curiosity, is there ANY reason why this has to be done in the > kernel? The PPPoATM module for pppd implements (via linux-atm) a completely > userspace ATM decoder.. if anything, now redundant ATM stack code should be > REMOVED from Linux! > > Most distributions (to my knowledge) supporting the speedtouch modem do so > using the method prescribed on speedtouch.sf.net; an entirely userspace > procedure. pppd does all the ATM magic. > > Does this have real-world applications beyond the Speedtouch DSL modems? If > not, I propose adding this code to linux-atm, not the kernel, since most > users of USB speedtouch DSL modems will not be using the kernel's ATM.
I am using SpeedTouch 330 modem with kernel driver (on Gentoo).
The instalation is currently (with firmware loader instead of modem_run) very simple: USE="atm" emerge ppp, download firmware and place it in /lib/firmware, compile the kernel with speedtch support.
I tried to use userspace driver some time ago but it wasn't working for me so I gave up. I was using modem_run with kernel driver for long time to load the firmware but there were many problems with it too (nearly every kernel or modem_run upgrade was breaking something, modem_run was hanging in D state in most unapropriate moments and so on).
Now I am using pure kernel driver and firmware loader and it works 100% ok. There were no problems with it for long time. And I don't even want to look at this userspace driver again.
Since Linux newer was (or is going to be) userspace-driver OS, maybe we should leave it that way...
Grzegorz Kulewski
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