Questions about hw_descrambler for Enigma2 Boxes

[homer314]

Hello Team, first of all thank you very much for your incredible work on this project, it is really an amazing tool.

My hardware setup is the following:
2x WideBand LNBs -> dcss / Jess multiswitch -> (2 ways Inverto Unicable II IDLU-USP1O5-OUO2O-OBT Splitter) -> DM920 4k with FBC DVB-S2X tuner

My software setup, instead:
3x minisatip (v2.0.99~b16d810) instances are running on the dreambox (PurE2-Image Enigma2 Image)
Descrambling is done by 3x oscam instances running on the same stbox.

#client #1
minisatip -j 0:4-0985 -d *:1-0 -e 0 -o 127.0.0.1:9000 -O -R /usr/share/minisatip/html -x 8080 -y 554 -I minisatip_1 --cache-dir /var/lib/minisatip/1 --device-id 1

#client #2
minisatip -j 1:5-1050 -d *:1-0 -e 1 -o 127.0.0.1:9001 -O -R /usr/share/minisatip/html -x 8081 -y 1554 -I minisatip_2 --cache-dir /var/lib/minisatip/2 --device-id 2

#client #3
minisatip -j 2:6-1115 -d *:1-0 -e 2 -o 127.0.0.1:9002 -O -R /usr/share/minisatip/html -x 8082 -y 2554 -I minisatip_3 --cache-dir /var/lib/minisatip/3 --device-id 3

Everything works fine with the exception of the clients (DVBViewer on Win or a custom app on Android TV) freezing time to time (not related to the descrumbling stage)

Investigating this i found minisatip's logs flooded by CA_SET_DESCR_MODE -> Invalid argument messages:

[..]
[01/09 23:51:12.650 main]: dvbapi: received DVBAPI_CA_SET_DESCR, key 0 parity 0, index 0, algo 0, CW OK: 7B 43 D2 90 3E 7A C7 7F
[01/09 23:51:12.650 main]: hw_descrambler: hw_set_cw called for PMT 0 (master 0), adapter 1 (pa 0, ca 1), slot 1/8, algo 0, parity 0
[01/09 23:51:12.650 main]: hw_descrambler: CA_SET_DESCR_MODE ioctl (slot=1, algo=0, mode=0) -> result=-1Invalid argument
[01/09 23:51:12.650 main]: hw_descrambler: CA_SET_PID ioctl (pid=5051, slot=1) -> result=0 SUCCESS
[01/09 23:51:12.650 main]: hw_descrambler: CA_SET_PID ioctl (pid=5052, slot=1) -> result=0 SUCCESS

[01/09 23:51:22.564 main]: dvbapi: received DVBAPI_CA_SET_DESCR, key 0 parity 1, index 0, algo 0, CW OK: EF 6B C8 22 3F 38 06 7D
[01/09 23:51:22.564 main]: hw_descrambler: hw_set_cw called for PMT 0 (master 0), adapter 1 (pa 0, ca 1), slot 1/8, algo 0, parity 1
[01/09 23:51:22.564 main]: hw_descrambler: CA_SET_DESCR_MODE ioctl (slot=1, algo=0, mode=0) -> result=-1Invalid argument
[01/09 23:51:22.564 main]: hw_descrambler: CA_SET_PID ioctl (pid=5051, slot=1) -> result=0 SUCCESS
[01/09 23:51:22.564 main]: hw_descrambler: CA_SET_PID ioctl (pid=5052, slot=1) -> result=0 SUCCESS

[01/09 23:51:33.137 main]: dvbapi: received DVBAPI_CA_SET_DESCR, key 0 parity 0, index 0, algo 0, CW OK: B5 15 EF B9 8C 7B FD 04
[01/09 23:51:33.137 main]: hw_descrambler: hw_set_cw called for PMT 0 (master 0), adapter 1 (pa 0, ca 1), slot 1/8, algo 0, parity 0
[01/09 23:51:33.137 main]: hw_descrambler: CA_SET_DESCR_MODE ioctl (slot=1, algo=0, mode=0) -> result=-1Invalid argument
[01/09 23:51:33.137 main]: hw_descrambler: CA_SET_PID ioctl (pid=5051, slot=1) -> result=0 SUCCESS
[01/09 23:51:33.137 main]: hw_descrambler: CA_SET_PID ioctl (pid=5052, slot=1) -> result=0 SUCCESS

[01/09 23:51:42.974 main]: dvbapi: received DVBAPI_CA_SET_DESCR, key 0 parity 1, index 0, algo 0, CW OK: 8F D8 30 97 15 89 84 22
[01/09 23:51:42.974 main]: hw_descrambler: hw_set_cw called for PMT 0 (master 0), adapter 1 (pa 0, ca 1), slot 1/8, algo 0, parity 1
[01/09 23:51:42.974 main]: hw_descrambler: CA_SET_DESCR_MODE ioctl (slot=1, algo=0, mode=0) -> result=-1Invalid argument
[01/09 23:51:42.974 main]: hw_descrambler: CA_SET_PID ioctl (pid=5051, slot=1) -> result=0 SUCCESS
[01/09 23:51:42.974 main]: hw_descrambler: CA_SET_PID ioctl (pid=5052, slot=1) -> result=0 SUCCESS
[..]

I guess it is something related to the 3 weeks old commit: eee6524

Is it expected? Do i need to tune minisatip config somehow to make it works properly?

Thank you!

[catalinii]

hi, can u provide a log ?

[homer314]

minisatip.log

Sure, let me know if it is ok/useful or you would like me to define different logging options.
Thank you for taking a look

[catalinii]

let's just run with -l http --hw-descrambler for now and upload /tmp/minisatip.log

[homer314]

minisatip.log
sure, here we go!

[catalinii]

btw, does the decryption works and is just this message (spam) ?

[homer314]

Yes, decryption works. Removing --hw-descrambler breaks it (so maybe better to leave it enabled by default?).

edit: nevermind about 2nd sentence. Decryption works even without --hw-descrambler as before

[catalinii]

Also I’ve created a new option to disable it by default: #1431