Nrf9160 - modem shell with ppp

RE: Nrf9160 - modem shell with ppp

JONATHAN LL — Thu, 22 Aug 2024 13:02:34 GMT

Looking in to this and will update

RE: Nrf9160 - modem shell with ppp

RobertLukan — Tue, 20 Aug 2024 16:48:25 GMT

Ok, understood. I guess the same limitation applies for SLM ?

RE: Nrf9160 - modem shell with ppp

JONATHAN LL — Tue, 20 Aug 2024 07:15:06 GMT

Update:

It is not working with current implementation of mosh ppp. mosh ppp sample uses modem raw sckts on a default PDN context for ip over ppp traffic. Raw sckts have a limitation in modem side so that other traffic for normal socket are not working at a same time.

https://docs.nordicsemi.com/bundle/ncs-latest/page/nrfxlib/nrf_modem/doc/sockets/raw_sockets.html

Currently, "ppp down" need to be done and then do the other traffic on default pdn context, and then "ppp up" when ppp is needed again. Alternatively (not supported now in mosh) run ppp over another separate PDN context. Or alternatively create another context for that other traffic.

RE: Nrf9160 - modem shell with ppp

JONATHAN LL — Mon, 19 Aug 2024 19:34:00 GMT

Thanks for all the info, will look in to this issue and report back.

RE: Nrf9160 - modem shell with ppp

RobertLukan — Wed, 14 Aug 2024 14:03:21 GMT

I am attaching the trace:

mosh:~$ ping -d 8.8.8.8
Initiating ping to: 8.8.8.8
Source IP addr: 100.85.246.88
Destination IP addr: 8.8.8.8
send() failed: (-22)
RRC mode: Idle
send() failed: (-22)
send() failed: (-22)
send() failed: (-22)
Ping statistics for 8.8.8.8:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss)
Pinging DONE
mosh:~$

mosh:~$ ppp down
PPP net if down
PPP carrier OFF
Closing PPP zephyr sckt
PPP carrier OFF
Closing PPP modem sckt
PPP: stopped
[00:02:38.260,467] <err> net_sock: invalid access on sock -1 by thread 0x20012658

mosh:~$ ping -d 8.8.8.8
Initiating ping to: 8.8.8.8
Source IP addr: 100.85.246.88
Destination IP addr: 8.8.8.8
RRC mode: Connected
Pinging 8.8.8.8 results: time=0.295secs, payload sent: 0, payload received 0
PPP in dead phase
Pinging 8.8.8.8 results: time=0.103secs, payload sent: 0, payload received 0
Pinging 8.8.8.8 results: time=0.077secs, payload sent: 0, payload received 0
Pinging 8.8.8.8 results: time=0.131secs, payload sent: 0, payload received 0
Ping statistics for 8.8.8.8:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss)
Approximate round trip times in milli-seconds:
Minimum = 77ms, Maximum = 295ms, Average = 151ms
Pinging DONE
mosh:~$