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2018-12-18host/layer23: don't init SAP interface by defaultVadim Yanitskiy1-4/+0
Almost all layer23 applications, excluding mobile, have nothing to do with SAP interface. Moreover, the current implementation does initialize SAP connection automatically, as soon as the first message is sent. Change-Id: I62cc69c06fa15468a55bb0a9d408267d0745174c
2018-12-18trx_toolkit/ refactor global class hierarchyVadim Yanitskiy7-790/+663
This change is a big step towards handling of multiple transceivers in a single process, i.e. multiple MS and multiple BTS connections. The old class hierarchy wasn't flexible enough, because initially fake_trx was designed as a bridge between OsmocomBB and OsmoBTS, but not as the burst router. There were two separate, but 90% similar implementations of the CTRL interface, two variations of each simulation parameter - one for UL, another for DL. The following new classes are introduced: - Transceiver - represents a single transceiver, that can be used as for the BTS side, as for the MS side. Each instance has its own CTRL, DATA, and (optionally) CLCK interfaces, among with basic state variables, such as both RX / TX freq., power state (running or idle) and list of active timeslots. - CTRLInterfaceTRX - unified control interface handler for common transceiver management commands, such as POWERON, RXTUNE, and SETSLOT. Deprecates both CTRLInterface{BB|BTS}. - FakeTRX - basically, a child of Transceiver, extended with RF path (burst loss, RSSI, TA, ToA) simulation. Implements a custom CTRL command handler for CTRLInterfaceTRX. The following classes were refactored: - BurstForwarder - still performs burst forwarding, but now it doesn't store any simulation parameters, and doesn't know who is BTS, and who is MS. Actually, BurstForwarder transforms each L12TRX message into a TRX2L1 message, and dispatches it between running transceivers with matching RX frequency and matching timeslot. - FakePM - still generates random RSSI values, but doesn't distinguish between MS and BTS anymore. As soon as a measurement request is received, it attempts to find at least one running TRX on a given frequency. Please note that still does handle only a single pair of MS and BTS. No regressions have been observed. Both new and refactored classes were documented. Change-Id: Ice44e2b22566b3652ef6d43896055963b13ab185 Related: OS#3667
2018-12-18trx_toolkit/ add optional legacy message coding flagVadim Yanitskiy1-2/+2
In I6b9a8b611ea1e9badc4d9ddf13aa9e237028e39a an optional legacy message coding mode was introduced. Let's add the corresponding argument to send_msg() and pass it to gen_msg(). Change-Id: I6b9a8b611ea1e9badc4d9ddf13aa9e237028e39a
2018-12-18trx_toolkit/ add optional legacy message coding flagVadim Yanitskiy1-1/+14
Some transceivers (e.g. OsmoTRX) have inherited a rudiment from OpenBTS - two dummy bytes at the end of TRX2L1 messages. Despite they are absolutely useless, some L1 implementations, such as trxcon and OpenBTS, still do expect them when checking the message length. Let's add an optional (disabled by default) argument to gen_msg(), that would enable adding those two dummy bytes. Change-Id: I0cf1314c399411886420176704cadd6e6d84787f
2018-12-18trx_toolkit/ use struct API for fn and toa256 codingVadim Yanitskiy1-16/+4
The built-in struct module is already used for toa256 decoding, so let's use it for toa256 encoding, and TDMA frame number coding too - no need to (re)implement the wheel! Change-Id: I10d2e15ac57a0524e9bc1c80ed6a0f6f5a263436
2018-12-16trx_toolkit/ drop meaningless warningsVadim Yanitskiy1-8/+0
A timeslot can be reconfigured at runtime, this is normal. We should neither complain nor reject such commands. Change-Id: I0a69ebceed5aa724093e6d1b23faad8c16705055
2018-12-16trx_toolkit/ exit if DATA dump parsing failedVadim Yanitskiy1-1/+2
False is not iterable, so we should properly handle the case when parsing of the whole DATA dump was failed (e.g. due to incorrect offset specified). Change-Id: I5443efb39bb9d3377290ce7ec5e34016cae0edb2
2018-12-16trx_toolkit/ fix: use proper argparse groupVadim Yanitskiy1-3/+3
Found using Flake8, F841 "local variable 'pf_group' is assigned to but never used". The filtering related options should be defined in 'pf_group' group, not in 'cnt_group'. Change-Id: I15d17c134cbbbd54d761113a56c1f83910ab6407
2018-12-16trx_toolkit: fix missing / useless importsVadim Yanitskiy4-4/+2
Found using Flake8: - F405 'log' may be undefined, or defined from star imports: data_msg - F401 'time' imported but unused - F401 'sys' imported but unused - F401 'signal' imported but unused Change-Id: Id0c42319b445db218b77fd5e99a9a0a89724281d
2018-12-12trx_toolkit/ add message parsing methodsVadim Yanitskiy1-0/+33
This change extends DATAInterface class with new methods: - recv_raw_data() - read raw data from socket; - recv_l12trx_msg() - read raw data and parse as L12TRX; - recv_trx2l1_msg() - read raw data and parse as TRX2L1; which would simplify the further usage of this class. Change-Id: I761c4e63864622d3882b8f9c80ea43b58f092cb1
2018-12-11trx_toolkit/ read data from socket in handle_rx()Vadim Yanitskiy2-5/+7
It makes much more sense to read data from socket in handle_rx(), instead of expecting a buffer with received data from caller. Change-Id: I83479c60c54e36a2a7582714a6043090585957ae
2018-12-11trx_toolkit/ctrl_if_*.py: transparently pass UDPLink argumentsVadim Yanitskiy2-4/+4
There is no need to (re)define the arguments of UDPLink's constructor. Let's use non-keyworded variable length argument list (*args). Change-Id: Ia312a5e15ce88d5f7e8d76c4ea8c93c59d91be5a
2018-12-10trx_toolkit/ fix SETTA command handlingVadim Yanitskiy1-1/+1
Since I8fd2a2ab7784b38bde5ebcfd0359b7e2cb53f5a7, SETTA command handling was broken, because the range limitation was removed together with argument parsing. Let's fix this. Change-Id: If582af3849359866de129504cc5b2dc6d64edbd5
2018-12-08trx_toolkit: merge into app_common.pyVadim Yanitskiy8-32/+25
Since we have introduced ApplicationBase class, that are used by all existing applications, let's merge the copyright printing helper into it. Change-Id: I8b70ec2dd08cb2ffed733d2c4e1215b094f8d3d5
2018-12-08trx_toolkit: introduce logging configuration argumentsVadim Yanitskiy6-15/+97
Before this change, it was impossible to configure logging parameters from command line, such as log level and format. This change introduces the following optional arguments: --log-level - logging level for stderr (by default, DEBUG); --log-format - logging message format for stderr; --log-file-name - enable logging to a given file; --log-file-level - logging level for file (by default, DEBUG); --log-file-format - logging message format for file; which are defined in a new class called ApplicationBase, so all existing applications should inherit them now. Change-Id: Ic3b0440cd73946ad444bd7e48feb7a92d45f6488
2018-12-07trx_toolkit/ migrate from getopt to argparseVadim Yanitskiy1-90/+44
Change-Id: I0218a328671c591b20b0666dc7c39ba865892acc
2018-12-07trx_toolkit/ migrate from getopt to argparseVadim Yanitskiy1-121/+65
Change-Id: Id1dacaa32134bfa68344e6c48310390cdd85cdc9
2018-12-07trx_toolkit/ migrate from getopt to argparseVadim Yanitskiy1-59/+27
Change-Id: Ib9bf5ed7384c4f34478975cefe03880eb2fc8069
2018-12-07trx_toolkit/ migrate from getopt to argparseVadim Yanitskiy1-131/+63
Change-Id: I1be66aa022a79aa1683f0e6cfebaed568b1736b1
2018-12-07trx_toolkit/ migrate from getopt to argparseVadim Yanitskiy1-145/+88
Change-Id: I7eb3f2e2713f1f97293bd47a2eae3b140f63fb59
2018-12-07trx_toolkit/ fix short version of --burst-typeVadim Yanitskiy1-3/+3
Both '--bind-addr' and '--burst-type' had the same short '-b'. Let's use the upper case version for '--burst-type'. Change-Id: Ib8a46e25cbc6266c3e147582f9e8045362270151
2018-12-07trx_toolkit: use generic logging module instead of print()Vadim Yanitskiy12-95/+145
There are multiple advantages of using Python's logging module: - advanced message formatting (file name, line number, etc.), - multiple logging targets (e.g. stderr, file, socket), - logging levels (e.g. DEBUG, INFO, ERROR), - the pythonic way ;) so, let's replace multiple print() calls by logging calls, add use the following logging message format by default: [%(levelname)s] %(filename)s:%(lineno)d %(message)s Examples: [INFO] Starting transceiver... [DEBUG] IND CLOCK 26826 [DEBUG] Recv POWEROFF cmd [INFO] Stopping transceiver... [INFO] Shutting down... Please note that there is no way to filter messages by logging level yet. This is to be introduced soon, together with argparse. Change-Id: I7fcafabafe8323b58990997a47afdd48b6d1f357
2018-12-07trx_toolkit/ drop randomization related cmd optionsVadim Yanitskiy2-42/+6
The randomization of both UL/DL RSSI and ToA values is optional, and can be configured from the control interface (see both FAKE_RSSI and FAKE_TOA commands). The command line options for enabling / disabling the randomization were redundant, so let's get rid of them and check if the corresponding treshold value is set. Change-Id: I6adc13b8989ade2fab895673525c0ca17bf9b3f2
2018-12-07trx_toolkit/ also pass-filter UL bursts by time-slotVadim Yanitskiy1-0/+5
For some reason, the time-slot pass-filtering was only done for DL bursts, but not for UL bursts. BurstForwarder shall not pass UL bursts for unconfigured time-slots too. Let's also print a warning if an UL burst is sent on a not configured time-slot, i.e. before sending SETSLOT command. Change-Id: Idb7f5b212e5814aeff8ca8bc875ad066674267cd
2018-12-07trx_toolkit/ properly pass-filter multiple time-slotsVadim Yanitskiy2-8/+19
Previously it was only possible to configure a single time-slot that would be pass-filtered by a BurstForwarder instance. In some applications it would be useful to configure multiple time-slots, so let's refactor the time-slot pass-filtering algorithm. Change-Id: Ie1490adaf7a7c62c966aeb60c1898eaf3b5a1e84
2018-12-06trx_toolkit/ document and refactor BurstForwarderVadim Yanitskiy1-48/+126
Instead of having all configuration variables of BurstForwarder initialized in the class heading, let's introduce two functions for initialization (resetting to defaults) of both UL/DL params. This would allow to reset a BurstForwarder instance from the control interface in follow-up patches. Let's also introduce some basic documentation for the class fields, which were defined in the heading previously. Change-Id: I6b1bf41cf22f01a7e7ecc91c625fb0d2bf4bfeac
2018-11-29trxcon/l1ctl.c: handle hopping channels from L1CTL_DM_EST_REQVadim Yanitskiy1-21/+62
Change-Id: I8617b5808748bc4df3d7cc9862ed8cf12613f270
2018-11-29trxcon/trx_if.c: add SETFH CTRL command supportVadim Yanitskiy2-0/+46
The idea of SETFH command is to instruct transceiver to enable frequency hopping mode using the following parameters: CMD SETFH <HSN> <MAIO> <CH1> <CH2> [... <CHN>] Note: since the length of a CTRL command is limited to 128 symbols (BTW: why?), the amount of channels is also limited. Change-Id: Id3d44e6a2796f1ce8523a49dedd5d484052a5c7f
2018-11-22trxcon/l1ctl.c: fix deprecated gsm_band_name() usageVadim Yanitskiy1-3/+13
Change-Id: I99bb935b7cd529c885bf10dc209b6016df8095d8
2018-11-21mobile: use VTY bind addr from config, deprecate cmd line optionsVadim Yanitskiy3-20/+19
This change revives the main idea of: Change-Id: I32517567847fd5c54b1742f18bf409ff81e316fa to stop ignoring the VTY bind address from the config file. Furthermore, it deprecates (and disables) both 'u' and 'v' command line options, because they are redundant. Change-Id: I99e0ec1717edd29b3be231be86616cc7effe5d95
2018-11-21mobile: abort in case of argv handling errorsVadim Yanitskiy1-3/+10
The process should be aborted if a non-existing command line option or an incorrect parameter value is passed. Change-Id: Ib656ad12f12429ed15dc2a1554901ffa51148ff6
2018-11-21mobile/app_mobile.c: use LOGP() instead of printf()/fprintf()Vadim Yanitskiy1-9/+8
Change-Id: I6af76afbaa34dde5ddfc31a65700030862442dba
2018-11-21mobile/app_mobile.c: drop redundant printf() callVadim Yanitskiy1-1/+0
The VTY requisites are always being printed by libosmovty, there is no need to duplicate this information. Change-Id: I688f66175ea67d4c6a46819bee7d300ad9ce7cc7
2018-11-21Revert "mobile: fix vty bind ip override"Vadim Yanitskiy1-4/+3
This reverts commit c8de8cb1e126a18c0269571fba38310589dd9273 (Change-Id I32517567847fd5c54b1742f18bf409ff81e316fa by Max), because several problems were introduced, in particular: a) Help message of mobile application is broken: "The VTY IP to telnet to. (default (null))", "The VTY port number to telnet to. (default". b) Default VTY bind addres != parsed from the config file. c) The (vty_ip == NULL) is resolved only when an external MNCC handler is used, otherwise NULL is passed to l23_app_init(). Change-Id: Ic63a4eb828ff32d3744886b4f5f6f5019c798620
2018-11-19mobile: fix vty bind ip overrideMax1-3/+4
Previously the vty bind config parameter was always ignored. Fix this by using proper default value from the config unless it's explicitly set via command-line parameter. Change-Id: I32517567847fd5c54b1742f18bf409ff81e316fa
2018-11-19Fix build with latest libosmocoreMax1-10/+0
Remove locally defined function which conflicts with the one in libosmocore. Change-Id: I1be1d39f7c93c959ca33f6296ecda71996865cca
2018-11-19l1l2 interface: use LOGP for socket errorsMax2-2/+4
Log via LOGP() like the rest of the file instead of fprintf() for consistency. While at it, also print error cause. Change-Id: Id205bcd9bdb7c3e4b96493d50be8381a6fa80ac6
2018-11-19osmocon: log error cause for socket openingMax1-1/+2
Change-Id: I2f871cb16e5e1033e42863a9e12459057004782c
2018-11-19mobile: log socket path on errorMax1-1/+1
Change-Id: I18eb46743e4c0e4e8f8032883f39fec355f03c78
2018-11-16mobile: use proper type for boolean flagsMax2-11/+11
This makes reading code easier and simplifies further modifications. Change-Id: I7eff2a61495ff167dc19fc9a41882a7a11fbf32d
2018-11-16mobile: add header for MS' MNCC functionsMax4-10/+12
This simplifies adding new functions and re-using them from other parts of the code. Change-Id: Ibad400a99afe052f011f54fc706836b6bf89f4b9
2018-11-08layer23: Avoid mempcy with NULL srcPau Espin Pedrol1-1/+2
Fixes following ASan warning: git/osmocom-bb/src/host/layer23/src/misc/../common/main.c:146:2: runtime error: null pointer passed as argument 2, which is declared to never be null The warning however is harmless since in that case, app_len = 0 and thus size to copy is 0. Change-Id: I009a5b53f1e5be72ce347d64d3a7cb1d95d37ea3
2018-11-05layer23: Fix build against gpsd >= 3.18Pau Espin Pedrol1-2/+13
Change-Id: I0e97d3e8c3688064c959ea60ecef50cfbbc1bcd6
2018-11-05cosmetic: fix trailing whitespacePau Espin Pedrol1-4/+3
Change-Id: I5c1a6d98079ad846d114584a17ba9d80d95e0595
2018-11-05l1ctl_proto.h: use flexible array member for traffic messagesVadim Yanitskiy3-16/+31
Unlike the DATA messages, traffic frames may have different length. Instead of having fixed payload (i.e. TCH frame) length, let's introduce a flexible array member. This would allow one to calculate the frame length using the MSGB API. Change-Id: I119fa36c84e95c3003d57c19e25f8146ed45c3c6
2018-10-27layer23/l1ctl.c: fix: use host byte order for TDMA fnVadim Yanitskiy1-1/+1
Change-Id: Iad00eebf03b38b9c4fc2d7ed66697d23a953d8b2
2018-10-27layer23/common: move SIM APDU caching from l1ctl.cVadim Yanitskiy3-16/+29
L1CTL implementation (i.e. l1ctl.c) is not a good place for the SIM specific stuff. Let's move it to the proper place (i.e. sim.c). As a bonus, this change fixes a possible problem of loosing the cached APDUs if two or more L2&3 applications are using a single LAPDm connection. The APDU buffer is dedicated per MS now. Change-Id: I564c610e45aa3b630ca5d1ec6bc1cace0dc9c566
2018-10-26trxcon: make TRX bind address configurableVadim Yanitskiy1-6/+17
Previously the wildcard address (i.e. '') was hard-coded as the bind address of TRX interface. Let's make it configurable by introducing a command line option. Note that the '--trx-ip' option was deprecated by '--trx-remote', because it isn't clean whether it is remore or local address. It still can be used, but was removed from help message. Change-Id: Ic2f43632cc57bb6f722eba05219e438f97fecb95
2018-10-26Report socket path on errorsMax3-3/+3
Change-Id: Ib63e1205d7b845c8779eb511635f26bae3a18085
2018-10-23fake_trx: introduce CTRL commands for RSSI simulationPau Espin Pedrol2-0/+42
Since FakeTRX is a proxy, it basically emulates transceiver for both osmo-bts-trx and trxcon, hence there are two separate and independent control interfaces (usually, ports 6701 and 5701). All simulation commands (see 'FAKE_*') are usually implemented on both interfaces separately: - - simulation commands affecting Uplink, - - simulation commands affecting Downlink. This change introduces the 'FAKE_RSSI' command for both CTRL interfaces in two variations: - absolute: CMD FAKE_RSSI <BASE> <THRESH> - relative: CMD FAKE_RSSI <+-BASE_DELTA> where 'THRESH' affects optional value randomization. Change-Id: Ic01c31fb0304345dd7337c3ee1c7ee3c2d3e8460