[linux-dvb] Re: Set up a network interface

[Holger Waechtler <holger@convergence.de>]

Hi David,

have you checked that you're on the right PID? Do you see network 
typical sections when you run DVB/apps/test/test_sections on this PID?

Holger


David Vidal Rodríguez wrote:
> Holger Waechtler wrote:
>
> > Just use e.g. tzap for tuning, everything else should work as above. 
> > On the wen you also find some HOWTOs which describe how to set up a 
> > network connection over DVB.
>
> In order to use tzap I have to generate a channel list with the scan 
> program, isn't it? Well, I get the following output:
>
>
> # dvbtune -c 0 -f 650000000 -tm 8 -qam 16 -cr 2_3 -gi 8 -bw 8 -n 16978
> Using DVB card "TechnoTrend/Hauppauge DEC-2000-t Frontend"
> tuning DVB-T (in United Kingdom) to 650000000 Hz
> polling....
> Getting frontend event
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI 
> FE_HAS_SYNC
> Bit error rate: 0
> Signal strength: 255
> SNR: 0
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI 
> FE_HAS_SYNC
> Successfully opened network device, please configure the dvb interface
>
> # scan
> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
>
>  >>> tune to:
> 658000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE 
>
> Frontend can not do requested INVERSION_AUTO, trying INVERSION_OFF instead
>  >>> tuning status == 0x1f!!!
> start filter pid 0x0000 table_id 0x00
> start filter pid 0x0011 table_id 0x42
> start filter pid 0x0010 table_id 0x40
> filter timeout pid 0x0011
> remove filter pid 0x0011
> filter timeout pid 0x0000
> remove filter pid 0x0000
> filter timeout pid 0x0010
> remove filter pid 0x0010
> dumping lists (0 services)
> Done.
>
> ...which leads me to think that there is still something wrong there. 
> First of all, that "658000000" number, or the "Signal strength: 255" 
> line from the dvbtune command.
>
> It is proven that I receive the DVB-T signal because I can watch TV with 
> the same dec.
>
> Let's go on:
>
> # ifconfig dvb0_0
> dvb0_0    Link encap:Ethernet  HWaddr 00:00:00:00:00:00
>           BROADCAST NOARP MULTICAST  MTU:4096  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:100
>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>           Base address:0x4252
>
> # ifconfig dvb0_0 hw ether 11:12:13:14:15:16
> # ifconfig dvb0_0 192.168.0.1
> # ifconfig dvb0_0 promisc
> # ifconfig dvb0_0
> dvb0_0    Link encap:Ethernet  HWaddr 11:12:13:14:15:16
>           inet addr:192.168.0.1  Bcast:192.168.0.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING NOARP MULTICAST  MTU:4096  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:100
>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>           Base address:0x4252
>
> Neither iptraf nor tcpdump show activity of any class in dvb0_0. Luckily 
> I don't get panics any more, or at least I can't reproduce such a 
> situation.
>
> I'm using (in this order) dvb-core, dvb-ttusb-dec, and dec2000_frontend.
>
> What's going on here?
> Thanks!
> David.


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