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Property:multid2 (avmcmd)

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Info
  
Name-Collision - multiple objects in this wiki use the name multid2!
multid2 (avmcmd) Inter-CPU LAN management daemon on early 6490 Puma6 ATOM.
multid2 (process) Process running multid2
multid2 (watchdog) Watchdog for multid2

AVM-Command

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Details

multid2 is the Inter-CPU LAN management daemon on early 6490 Puma6 ATOM.
Besides managing the network on the ATOM it also performs time sync using chronyd.

Background: Up to 6490 fw 6.66 FRITZ!OS was nearly completely running on ARM, like in ARM-only 63xx Puma5 models.
The ATOM Intel added was nearly unused. Early Intel Puma6 SDK named it an application processor and did not use it at all.
Later AVM ported FRITZ!OS completely to ATOM, the ARM core is only used for the DOCSIS modem since then.

However, the USB-Host is connected to the ATOM, which has way better CPU performance than the ARM.
That is why AVM implemented all NAS and USB-Host functionality on the ATOM on early 6490 firmware.

This covers printserv and ftpd being proxied by tcpproxyd on ARM, tcpproxy_ctl on ATOM controling which ports.
The NAS webserver and the management of all USB related services was provided by nas_ctlmgr.
Since tcpproxyd does not support SSL nas_ctlmgr ran on a separate IP, which resolved from fritz.nas.
Stick+Surf is also splitted into avmstickandsurf.part1 on ARM and avmstickandsurf.part2 on ATOM, see avmstickandsurf.
For UMTS modems netttyd on ATOM multiplexes the TTY devices for netttym.ko on the ARM side.

The network on the ATOM on early 6490 firmware is managed by multid2.
IPv4 and IPv6 network addresses of the respective other side are gathered by avmipc_state.
Some ATOM ressources are mounted on the ARM side using nfs4.
For network throughput tests there's the remote controllable speedtestd on ATOM.

6490 fw 6.64:

# multid2 -?

usage: multid2 multid2 [options]

options:
  -?                 - print this help
  -f                 - run in forground. (NOTSET)
  -s                 - stop daemon. (NOTSET)
  -p STRING          - Pidfile. ("/var/run/multid2.pid")
  -I                 - send multid2 a SIGHUP. (NOTSET)
  -D STRING          - switch debug logs on. (FUNC)

start server:   multid2
stop server :   multid2 -s

Events

Daily updated index of AVM-Events and AVMIPC-Datastore nodes affecting this command. Last update: 2023-12-10 05:13 GMT.
The owners of Event-Sinks and Event-Sources are manual research, which may be incomplete or even wrong.
A * in the Mod column marks info from Supportdata-Probes, which will always stay incomplete.
A ** in the Mod column marks info from Supportdata2 probes, which by their nature will stay way more incomplete.
A - in the Mod column marks manual research, the Firmware then shows where the item occurs, not the Relation.

Relation Typ Object Mod Firmware Info Origin
Endpoint sock me_multid2-pcp-($num).ctl 1* 6.50 - 6.66 avmipc endpoint of libavmpcp.so for multid2 AVM
1 event relation for this command

multid2 acquires the IP addresses of the ARM side from these AVMIPC-States:

multid2 provides the IP addresses of the ATOM side by these AVMIPC-States:

Source

The names of source files compiled into an executable often help to understand function blocks (and show gaps in the docs).
fw 6.64 source files:

$ strings /sbin/multid2 | grep -e '\.c$' -e '\.cpp$'

multid2.c
staticroutes.c
staticroutes6.c
chronyctl.c
sntp.c  

Dependencies

Daily updated index of all dependencies of this command. Last update: 2024-12-21 07:44 GMT.
A * in the Mod column marks info from Supportdata-Probes, which will always stay incomplete.

Relation Typ Object Mod Firmware Info Origin
Runs as proc multid2 (process) 1* 6.08 - 6.66 Process running multid2 AVM
Registers wdog multid2 (watchdog) 1* 6.24 - 6.66 Watchdog for multid2 AVM
Serving sock me_multid2-pcp-($num).ctl 1* 6.50 - 6.66 avmipc endpoint of libavmpcp.so for multid2 AVM
Serving sock me_multid2.ctl 1* 6.08 - 6.66 avmipc endpoint of multid2 AVM
Depends on lib libar7cfg.so 1 6.20 - 6.64 TFFS-Configuration API to ar7.cfg and many more. AVM
Depends on lib libavm_event.so 1 6.50 - 6.64 AVM-Events management API AVM
Depends on lib libavmcipher.so 1 6.50 - 6.64 AES / DES / Rijndael encryption / decryption. AVM
Depends on lib libavmcsock.so 1 6.20 - 6.64 Networking, I/O and helper functions AVM
Depends on lib libavmhmac.so 1 6.50 - 6.64 HMAC / SHA / MD5 hashing. AVM
Depends on lib libavmpcp.so 1 6.50 - 6.64 Port Control Protocol (PCP) API library AVM
Depends on lib libboxlib.so 1 6.20 - 6.64 Box status, logging and statistics functions AVM
Depends on lib libc.so 1 6.20 - 6.64 Standard C library Linux
Depends on lib libdl.so 1 6.20 - 6.64 Dynamic linking library Linux
Depends on lib libdputil.so 1 6.50 - 6.64 DataPipe / packet utilities AVM
Depends on lib libewnwled.so 1 6.50 - 6.64 LED event helper functions AVM
Depends on lib libewnwlinux.so 1 6.20 - 6.64 Linux networking functions AVM
Depends on lib libewnwnet.so 1 6.20 - 6.64 Internet helper functions AVM
Depends on lib libgcc_s.so 1 6.20 - 6.64 GCC low-level runtime library Linux
Depends on lib libled2.so 1 6.50 - 6.64 LED API - second+third generation AVM
Depends on lib libpthread.so 1 6.20 - 6.64 POSIX threading library Linux
Depends on lib librt.so 1 6.50 - 6.64 POSIX realtime extensions library Linux
Depends on lib libwdt.so 1 6.20 - 6.64 AVM-Watchdogs management API AVM
Depends on lib libwebsrv.so 1 6.50 - 6.64 HTTP / HTTPS webserver and tools. AVM
23 dependencies for this command

Model-Matrix

Daily updated index of the presence, path and size of this command for each model. Last update: 2024-12-21 05:44 GMT.
Showing all models using this command. Click any column header (click-wait-click) to sort the list by the respective data.
The (main/scrpn/boot/arm/prx/atom/rtl) label in the Model column shows which CPU is meant for Multi-Linux models.
Note that this list is merged from Firmware-Probes of all known AVM firmware for a model, including Recovery.exe and Labor-Files.

Model Firmware Path Size
FRITZ!Box 6490 Cable (atom) 6.20 - 6.64 /sbin 47.0k - 52.4k
1 model uses this command

Symbols

Daily updated index of all symbols of this command. Last update: 2024-12-21 07:44 GMT.

Firmware Symbol
0 symbols for this command

SMW-Browser

Information is currently being retrieved from the backend.