[linux-dvb] Re: dvb and dvb0_0 network device

[dvb@cristalys.com]

Hi, 
 
thanks for your answer Johannes Stezenbach ,

  I give you the output of dvbsnoop :

  I send a mpeg-2 packet withinan mpe frame which have an 

 encapsulated IP packet( a ping). And dvbsnoop give me this result.

************************************************************************
I HAVE THIS RESULT WHEN I DON'T MAKE THE DVBNET DEVICE DVB0_0 AND WHEN I USE
DVBSTREAM AND DVBTUNE
************************************************************************

  # dvbsnoop -n 1 101

----------------------------------------------------------
SECT-Packet: 00000001   PID: 101 (0x0065), Length: 80 (0x0050)
Time received: Thu 2004-06-10  09:02:20.367
----------------------------------------------------------
  0000:  3e b0 4d 7b f1 c1 00 00  20 5c d0 00 45 00 00 40   >.M{.... \..E..@
  0010:  1d 54 00 00 ff 01 89 68  0a 01 00 fe 0a 01 00 01   .T.....h........
  0020:  08 00 38 8c 03 d5 00 00  00 07 e5 59 00 00 70 fe   ..8........Y..p.
  0030:  ab cd ab cd ab cd ab cd  ab cd ab cd ab cd ab cd   ................
  0040:  ab cd ab cd ab cd ab cd  ab cd ab cd 7d 24 f5 0a   ............}$..

PID:  101 (0x0065)
Guess table from table id...
DSM-CC DATAGRAM-decoding....
Table_ID: 62 (0x3e)  [= DSM-CC - private data section  // DVB datagram]
section_syntax_indicator: 1 (0x01)
private_indicator: 0 (0x00)
reserved_1: 3 (0x03)
Section_length: 77 (0x004d)
MACaddrbyte/DevicdID 6: 123 (0x7b)
MACaddrbyte/DeviceID 5: 241 (0xf1)
reserved_2: 3 (0x03)
payload_scrambling_control: 0 (0x00)  [= unscrambled]
address_scrambling_control: 0 (0x00)  [= unscrambled]
LLC_SNAP_flag: 0 (0x00)
current_next_indicator: 1 (0x01)  [= valid now]
Section_number: 0 (0x00)
Last_Section_number: 0 (0x00)
MACaddrbyte/DeviceID 4: 32 (0x20)
MACaddrbyte/DeviceID 3: 92 (0x5c)
MACaddrbyte/DeviceID 2: 208 (0xd0)
MACaddrbyte/DeviceID 1: 0 (0x00) => MAC-Address/DeviceID: 00:d0:5c:20:f1:7b
IP_datagram_bytes
      0000:  45 00 00 40 1d 54 00 00  ff 01 89 68 0a 01 00 fe   E..@.T.....h....
      0010:  0a 01 00 01 08 00 38 8c  03 d5 00 00 00 07 e5 59   ......8........Y
      0020:  00 00 70 fe ab cd ab cd  ab cd ab cd ab cd ab cd   ..p.............
      0030:  ab cd ab cd ab cd ab cd  ab cd ab cd ab cd ab cd   ................
CRC: 2099574026 (0x7d24f50a)
==========================================================

************************************************************************
THAT'S ALL

************************************************************************
WHEN I USE DVBNET OR DVBTUNE TO CREATE THE DEVICE DVB0_0 LET SEE WHAT I HAVE:

dvbtune -f 1450000 -s 15914 -n 101
-------------------------------------
Using DVB card "STV0299/TSA5059/SL1935 based"
tuning DVB-S to L-Band:1107311556, Pol: Srate=15914000, 22kHz=off
polling....
Getting frontend event
FE_STATUS:
polling....
Getting frontend event
FE_STATUS: FE_HAS_SIGNAL FE_HAS_CARRIER
polling....
Getting frontend event
FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI FE_HAS_SYNC
Bit error rate: 22272
Signal strength: 62120
SNR: 65535
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
-----------------------------------------------------

after this result i have to configure the dvb0_0 device:

************************************************************************
ifconfig dvb0_0 10.1.0.1 hw ether 00:D0:5C:20:F1:7B up   

and the ifconfig gave me:

----------------------------------------------------------------
dvb0_0    Lien encap:Ethernet  HWaddr 00:D0:5C:20:F1:7B
          inet adr:10.1.0.1  Bcast:10.255.255.255  Masque:255.0.0.0
          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 lg file transmission:1000
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
************************************************************************

I TRIED TO USE :

ifconfig dvb0_0 promisc up
and
echo 0 > /proc/sys/net/ipv4/conf/dvb0_0/rp_filter  

BUT NOTHING BETTER

(what do you think about this two things ... promisc and rp_filter ????)


I HAVE NOTHING ON "TCPDUMP -ni DVB0_0"
***************************************

HOW CAN I USE OR SEE THE COUNTERS IN DVB_NET.C ???????????????????????


********************
 THANKS FOR HELPING 
********************



----------------------------------------------------------------------

> dvb@cristalys.com wrote:
> > I use dvbsnoop ( dvbsnoop 101 )
> > And i succeed in capturing my packet .
> > BUT when i use instead of dvbstream and dvbsnoop the dvbnet application or
> > simple dvbtune like this :
    dvbtune -f 1450000 -s 15914 -n 101   (to create dvb0_0 network device )
> > or
> >  dvbnet -p 101
> > after configuring the dvb0_0 device I do a tcpdump on dvb0_0 and nothing


> What does 'ifconfig dvb0_0' say? Check against the statistics
> counters in drivers/media/dvb/dvb-core/dvb_net.c, function
> dvb_net_sec().
> See also linux/Documentation/dvb/faq.txt.
> 
> If it is not counting any packets then the section filter does not work
> for some reason. Post some dvbsnoop output then.
> 
> HTH,
> Johannes