[22.03] comgt: support Mikrotik R11e-LTE6 modem #12275
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The MikroTik R11e-LTE6 modem goes into flight mode (CFUN=4) at startup
and the radio is off (*RADIOPOWER: 0):
AT+RESET
OK
OK
*SIMDETEC:2,NOS
*SIMDETEC:1,SIM
*ICCID: 8936500119010596302
*EUICC: 1
+MSTK: 11, D025....74F3
*ADMINDATA: 0, 2, 0
+CPIN: READY
*EUICC: 1
*ECCLIST: 5, 0, 112, 0, 000, 0, 08, 0, 118, 0, 911
+CREG: 0
$CREG: 0
+CESQ: 99,99,255,255,255,255
*CESQ: 99,99,255,255,255,255,0
+CGREG: 0
+CEREG: 0
+CESQ: 99,99,255,255,255,255
*CESQ: 99,99,255,255,255,255,0
*RADIOPOWER: 0
+MMSG: 0, 0
+MMSG: 0, 0
+MMSG: 1, 0
+MPBK: 1
While the chat script is able to establish the PPP connection,
it's closed instantly by the modem: LCP terminated by peer.
local2.info chat[7000]: send (ATD*99***1#^M)
local2.info chat[7000]: expect (CONNECT)
local2.info chat[7000]: ^M
local2.info chat[7000]: ATD*99***1#^M^M
local2.info chat[7000]: CONNECT
local2.info chat[7000]: -- got it
local2.info chat[7000]: send ( ^M)
daemon.info pppd[6997]: Serial connection established.
kern.info kernel: [ 453.659146] 3g-mikrotik: renamed from ppp0
daemon.info pppd[6997]: Renamed interface ppp0 to 3g-mikrotik
daemon.info pppd[6997]: Using interface 3g-mikrotik
daemon.notice pppd[6997]: Connect: 3g-mikrotik <--> /dev/ttyACM0
daemon.info pppd[6997]: LCP terminated by peer
daemon.notice pppd[6997]: Connection terminated.
daemon.notice pppd[6997]: Modem hangup
daemon.info pppd[6997]: Exit.
daemon.notice netifd: Interface 'mikrotik' is now down
Sending "AT+CFUN=1" to modem deactivates the flight mode and
solves the issue:
daemon.notice netifd: Interface 'mikrotik' is setting up now
daemon.notice netifd: mikrotik (7051): sending -> AT+CFUN=1
daemon.notice pppd[7137]: pppd 2.4.9 started by root, uid 0
local2.info chat[7140]: abort on (BUSY)
local2.info chat[7140]: abort on (NO CARRIER)
local2.info chat[7140]: abort on (ERROR)
local2.info chat[7140]: report (CONNECT)
local2.info chat[7140]: timeout set to 10 seconds
local2.info chat[7140]: send (AT&F^M)
local2.info chat[7140]: expect (OK)
local2.info chat[7140]: ^M
local2.info chat[7140]: +CESQ: 99,99,255,255,255,255^M
local2.info chat[7140]: ^M
local2.info chat[7140]: *CESQ: 99,99,255,255,255,255,0^M
local2.info chat[7140]: AT&F^MAT&F^M^M
local2.info chat[7140]: OK
local2.info chat[7140]: -- got it
...
local2.info chat[7140]: send (ATD*99***1#^M)
local2.info chat[7140]: expect (CONNECT)
local2.info chat[7140]: ^M
local2.info chat[7140]: ATD*99***1#^M^M
local2.info chat[7140]: CONNECT
local2.info chat[7140]: -- got it
local2.info chat[7140]: send ( ^M)
daemon.info pppd[7137]: Serial connection established.
kern.info kernel: [ 463.094254] 3g-mikrotik: renamed from ppp0
daemon.info pppd[7137]: Renamed interface ppp0 to 3g-mikrotik
daemon.info pppd[7137]: Using interface 3g-mikrotik
daemon.notice pppd[7137]: Connect: 3g-mikrotik <--> /dev/ttyACM0
daemon.warn pppd[7137]: Could not determine remote IP address: defaulting to 10.64.64.64
daemon.notice pppd[7137]: local IP address 100.112.63.62
daemon.notice pppd[7137]: remote IP address 10.64.64.64
daemon.notice pppd[7137]: primary DNS address 185.29.83.64
daemon.notice pppd[7137]: secondary DNS address 185.62.131.64
daemon.notice netifd: Network device '3g-mikrotik' link is up
daemon.notice netifd: Interface 'mikrotik' is now up
To send this AT command to the modem the "runcommand.gcom" script
dependency is moved from comgt-ncm to comgt.
As the comgt-ncm package depends on comgt already, this change
is a NOOP from that point of view.
But from the modem's point it is a low hanging fruit as the modem
is usable with installing comgt and kmod-usb-ncm packages.
Signed-off-by: Szabolcs Hubai <szab.hu@gmail.com>
(cherry picked from commit 91eca7b)
The Mikrotik R11e-LTE6 modem is similar to ZTE MF286R modem, added
earlier: it has a Marvel chip, able to work in ACM+RNDIS mode, knows ZTE
specific commands, runs OpenWrt Barrier Breaker fork.
While the modem is able to offer IPv6 address, the RNDIS setup is unable
to complete if there is an IPv6 adress.
While it works in ACM+RNDIS mode, the user experience isn't as good as
with "proto 3g": the modem happily serves a local IP (192.168.1.xxx)
without internet access. Of course, if the modem has enough time
(for example at the second dialup), it will serve a public IP.
Modifing the DHCP Lease (to a short interval before connect and back to
default while finalizing) is a workaround to get a public IP at the
first try.
A safe workaround for this is to excercise an offline script of the
pingcheck program: simply restart (ifdown - ifup) the connection.
Another pitfall is that the modem writes a few messages at startup,
which confuses the manufacturer detection algorithm and got disabled.
daemon.notice netifd: Interface 'mikrotik' is setting up now
daemon.notice netifd: mikrotik (2366): Failed to parse message data
daemon.notice netifd: mikrotik (2366): WARNING: Variable 'ok' does not exist or is not an array/object
daemon.notice netifd: mikrotik (2366): Unsupported modem
daemon.notice netifd: mikrotik (2426): Stopping network mikrotik
daemon.notice netifd: mikrotik (2426): Failed to parse message data
daemon.notice netifd: mikrotik (2426): WARNING: Variable '*simdetec:1,sim' does not exist or is not an array/object
daemon.notice netifd: mikrotik (2426): Unsupported modem
daemon.notice netifd: Interface 'mikrotik' is now down
A workaround for this is to use the "delay" option in the interface
configuration.
I want to thank Forum members dchard (in topic Adding support for
MikroTik hAP ac3 LTE6 kit (D53GR_5HacD2HnD)) [1]
and mrhaav (in topic OpenWrt X86_64 + Mikrotik R11e-LTE6) [2]
for sharing their experiments and works.
Another information page was found at eko.one.pl [3].
[1]: https://forum.openwrt.org/t/137555
[2]: https://forum.openwrt.org/t/151743
[3]: https://eko.one.pl/?p=modem-r11elte
Signed-off-by: Szabolcs Hubai <szab.hu@gmail.com>
(cherry picked from commit dbd6ebd)
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This the backport of the (just merged) pull request #12261.