[linux-dvb] Re: IP multicast package loss with current CVS driver

[Johannes Stezenbach <js@convergence.de>]

Michael Dreher wrote:
> 
> options dvb-ttpci ir_config=0 hw_sections=1 av7110_debug=0 buffers=25
> 
> It must be either buffers=25 or hw_sections=1 which make the difference.
> When I understand it right, "buffer" only influences the graphics buffer,
> so most probably it was "hw_sections=1" which was the default for the
> old driver. I thought I had already set this parameter, but the module
> name was wrong and the setting was never used.

"buffers" sets the number of v4l capture buffers, which is irrelevant
for this problem. 25 is also very excessive (2 is default,
3 or 4 are sometimes useful).

I suspect that the CRC check causes the packets to be dropped.

I comitted a change to the SW demux code which aligns its behaviour
with that of the hardware demux, i.e. the CRC check is only performed
if the section_syntax_indicator is set.

Michael, could you please update and test angain with hw_sections=0
so we can find out whether this change actually fixes the dvb_net problem?


Regards,
Johannes


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