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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