Dear kernel professionals, I'm dealing with a mobile unit development kit that requires multiplexing of several virtual serial lines over one single physical serial. The protocol is supposed to follow GSM 07.10 standard and outlined in detail here: http://www.roundsolutions.com/techdocs/docs/30268st10299a_CMUX_User_Guide_r2.pdf The supplier only supports WIN :-( drivers. There appear to be kernel modules around for embedded linux. I tried to download one http://svn.openezx.org/trunk/src/kernel-2.6/mux/ but could not manage to build it in my x86_64 environment. At the moment, I have no idea whether this module might fulfil my purpose at all. Maybe it only implements the module side (i.e. pretending a mobile device), not the application side (the controlling PC). What I expect is to load this (presumably with some userspace action and synchronisation commands to the controlled device) ontop of an existing serial connection. As a result, there should be some additional serial devices, where the demux'ed traffic can be piped in and out. I find clues that this type of multiplexing is done e.g in some mobile connect utilities, but nowhere (apart from the link given above) I find a dedicated kernel module for right that purpose. So here my questions: - Is there a version of the above mentioned mux / mux_river / ts0710 / mux_cli for x86_64 available? - or could this one from be adapted? - is there another implementation of GSM 07.10 MUXing? - is there any documentation around? Although the issue is not core critical for my project, I'd like to contribute if I can. No problem with testing and supplying docs, I think. Simple userspace config tool (e.g. some perl script writing/reading some bits to /proc/whats/o/ever) should still be within my capabilities. In some ancient time (2.0 or 2.2 kernel as far as I can remember) I have even managed to adopt and build a kernel module for some LC display from a book template, but that's years ago. But I'm not really firm in C, and things might not have become less complex since that days... But if I get help (some pointers where to start, caveats to look for) I might try it, provided there is a chance of success. Any help appreciated. Yours Wolfgang Rosner -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
