[Asterisk-Users] Re: Fwd: hdlc and kernel 2.4.26

Vasyl Rublyov vasyl.rublyov at ionidea.com
Tue Jun 1 18:15:07 MST 2004


But really I see the code is commented, not the question - what was the 
reason, will it work properly and as designed or breaks something else?

This is from the latest driver code

#if 0
                        skb->protocol = hdlc_type_trans(skb, 
                        skb->protocol = htons (ETH_P_HDLC);

And I see that maintainer has added already this and specially commented 
out over the preprocessor.

Michael A Rowley wrote:

> Hello,
> I contacted Krzysztof Halasa, the maintainer of the current sethdlc 
> code.  This is the response he gave me.
> Of course, I have this working now.  Still some minor configuration to 
> do, but It does work, and the connections to the internet are _much_ 
> faster than when I went through the adtran...  I would highly 
> recommend to anyone with a fractionated T1, with data and voice 
> channels to set up HDLC and not mess with the T1 router cost and 
> trouble...
> M.
> Begin forwarded message:
>>> but I am hoping to get hdlc working on
>>> linux kernel 2.4.26 with a digium T100P card from www.digium.com.
>>> Digium has built HDLC into the driver, and there are reports of people
>>> getting it working, but only with kernel 2.4.22 and below... I am
>>> curious if you have had any success getting hdlc working on kernel
>>> 2.4.26, or 2.6.x versions, or if you can supply any guidance.
>> The generic HDLC works fine with 2.4.26 and 2.6.6 kernels (well,
>> 2.6.6s have some not very serious problems for which a fix is being
>> merged).
>> The problem with Digium cards is they haven't been upgraded to
>> 2.4.26 kernels (the generic HDLC interface has changed a bit in
>> IIRC 2.4.23 and, while drivers in the official kernel have been
>> upgraded by the kernel team at the same time, it wasn't possible
>> with external drivers).
>> For this kernel change (2.4.22->2.4.26) it might be sufficient to
>> find and change line(s) looking like this one:
>>      skb->protocol = htons(ETH_P_HDLC);
>> into:
>>      skb->protocol = hdlc_type_trans(skb, dev);
>> It depends on the hardware driver, though.
>> -- 
>> Krzysztof Halasa, B*FH

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