[linux-dvb] Re: Dvb net vpn question.

[Johannes Stezenbach <js@convergence.de>]

Vincenzo Di Massa wrote:
> 2) Load dvb modules. I use dvb_shutdown_timeout=0 option to whatch TV.  
> Is it ok for data?

Yes and no. It means the kernel thread which normally monitors the
frontend will be stopped as soon as the frontend is closed. If your
signal is stable this might be OK.

> 3) Use szap to tune to the right transponder and set the pid I need. Do
> I need to let it run? Shall I tell szap the same pid twice? Shall I use 8192? Do I need -r option?

Don't set any pids at all (use 1fff in channels.conf, no -r).

> 4) Use dvbnet to bring up dvb0_0. I need to set mac and IP address using ifconfig, right?

Yes.

> 5) Use pptp (I have upgraded kernel and pppd already): pptp
> vpn.alicesat.it user <user>
> 6) Set up routing. I must send all packets trught ppp1(vpn) and its
> gateway.
> 
> Now I should be able to use my sat internet account but... I just don't
> recieve a bit into dvb0_0.
> Is this procedure right?
> All kernel messages "sound" like there is no problem.

- use test_sections or dvbsnoop on the PID you pass to dvb_net to see
  if there are any packets at all; compare with ETSI EN 301 192
  (chapter "MPE - Multi Protocol Encapsulation")
- look at dvb_net_sec() and possibly add a printk for debugging
- check /proc/sys/net/ipv4/conf/*/rp_filter
- try tcpdump -i dvb0_0

> Anyway it just crashes on 2.6.1 when using dvbnet. But it works with
> 2.4.22. (both kernels are using 2 days old cvs dvb-kernel)

Hm, I didn't test dvb_net with 2.6 so far...
I don't have any test account so I can only passively monitor
some MPE service, which isn't much fun ;-(

Johannes


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