I am not able to receive any IP packets on dvb0_0 in my setup.
I'm using cinergyT2 DVB-T with dvb drivers included
in stock debian kernel 2.6.16.
This is what I do:
# dvbstream -f 626000 8192 -o | dvbsnoop -s ts -if - -tssubdecode -nph -N 1 526
dvbsnoop V1.4.00 -- http://dvbsnoop.sourceforge.net/
dvbstream v0.6 - (C) Dave Chapman 2001-2004
Released under the GPL.
Latest version available from http://www.linuxstb.org/
Tuning to 626000 Hz
Using DVB card "TerraTec/qanu USB2.0 Highspeed DVB-T Receiver", freq=626000
tuning DVB-T (in United Kingdom) to 626000000 Hz, Bandwidth: 8
Getting frontend status
Bit error rate: 0
Signal strength: 61988
SNR: 42919
UNC: 0
FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI FE_HAS_SYNC
dvbstream will stop after -1 seconds (71582788 minutes)
Output to stdout
Streaming 1 stream
------------------------------------------------------------
TS-Packet: 00005436 PID: 526 (0x020e), Length: 188 (0x00bc)
from file: /dev/stdin
------------------------------------------------------------
Sync-Byte 0x47: 71 (0x47)
Transport_error_indicator: 0 (0x00)
Payload_unit_start_indicator: 1 (0x01) [= Packet data starts]
transport_priority: 0 (0x00)
PID: 526 (0x020e) [= NIT, PMT or Elementary PID, etc.]
transport_scrambling_control: 0 (0x00) [= No scrambling of TS packet payload]
adaptation_field_control: 1 (0x01) [= no adaptation_field, payload only]
continuity_counter: 3 (0x03)
Payload: (len: 184)
==> pointer_field: 0 (0x00)
==> Section table: 62 (0x3e) [= DSM-CC - private data section // DVB datagram]
Data-Bytes:
0000: 00 3e b0 3c 13 01 c1 00 00 0f d0 00 00 45 00 00 .>.<.........E..
0010: 2f 2b ef 00 00 03 11 fb 9b ac 10 02 0e e1 02 01 /+..............
0020: 13 c0 12 13 88 00 1b a5 71 80 e0 c1 95 ff 5f 96 ........q....._.
0030: c3 00 00 30 21 21 9b c0 17 a0 09 6c 7d d2 4f 0f ...0!!.....l}.O.
0040: 3e b1 19 13 01 c1 00 00 0f d0 00 2f 45 00 01 0c >........../E...
0050: 2b f0 00 00 03 11 fa bd ac 10 02 0e e1 02 01 13 +...............
0060: c0 14 13 8a 00 f8 f1 49 80 e1 31 61 f4 66 c0 13 .......I..1a.f..
0070: 00 00 07 ee 00 10 07 00 20 a0 08 56 15 0b 05 06 ........ ..V....
0080: 61 41 18 50 2a 14 23 05 02 41 40 91 05 2f ff 4b aA.P*.#..A@../.K
0090: e3 59 3b 9e 7b ad 2b be 33 2f 15 5a de 56 b2 3c .Y;.{.+.3/.Z.V.<
00a0: 8e 10 40 f5 69 bf e0 9f a1 fe 07 e7 7f 3d fe df ..@.i........=..
00b0: d4 7e 9f 9c d6 9f 31 df .~....1.
==========================================================
TS sub-decoding (1 packet(s) stored for PID 0x020e):
=====================================================
TS contains Section...
PID: 526 (0x020e)
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: 60 (0x003c)
MACaddrbyte/DevicdID 6: 19 (0x13)
MACaddrbyte/DeviceID 5: 1 (0x01)
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: 15 (0x0f)
MACaddrbyte/DeviceID 3: 208 (0xd0)
MACaddrbyte/DeviceID 2: 0 (0x00)
MACaddrbyte/DeviceID 1: 0 (0x00) => MAC-Address/DeviceID: 00:00:d0:0f:01:13
IP_datagram_bytes
0000: 45 00 00 2f 2b ef 00 00 03 11 fb 9b ac 10 02 0e E../+...........
0010: e1 02 01 13 c0 12 13 88 00 1b a5 71 80 e0 c1 95 ...........q....
0020: ff 5f 96 c3 00 00 30 21 21 9b c0 17 a0 09 6c ._....0!!.....l
CRC: 2110934799 (0x7dd24f0f)
As you can see the selected PID carries IP datagrams.
Next I bring up the virtual network interface:
# dvbnet -p 526
DVB Network Interface Manager
Version 1.1.0-TVF (Build Sat Apr 29 19:59:27 2006)
Copyright (C) 2003, TV Files S.p.A
Device: /dev/dvb/adapter0/net0
Status: device dvb0_0 for pid 526 created successfully.
# ifconfig dvb0_0 192.168.1.10 up
# ifconfig dvb0_0
dvb0_0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
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:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Base address:0x20e
RX bytes stays at zero...
# tcpdump -i dvb0_0
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on dvb0_0, link-type EN10MB (Ethernet), capture size 96 bytes
0 packets captured
0 packets received by filter
0 packets dropped by kernel
The promisc mode set by tcpdump doesn't help.
I'm sure the problem is specific to the cinergyT2 driver,
running the above commands with Hauppage DEC-2000T on the same machine
gives me IP packets.
I snooped in cinergyT2.c but I cannot spot any obvious bug.
I'll be happy to provide all needed info to debug this problem.
TIA,
Francesco Schiavarelli
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