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The new structure divides the code into a number of libraries
for the BSC core functionality, MSC core functionality, Abis transport,
TRAU and other bits.
This doesn't introduce any functional code change but simply moves
around files and alters Makefile.am accordingly.
Next step would be to disentangle a lot of the inter-library
dependencies and make the individual bits of code more independent.
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Depending on the MO we adress, select the proper OML link
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bsc_init.c was a big mess even only for two supported BTS models,
so before adding more BTS types, this needs a cleanup.
All the BTS specific code from bsc_init.c has now moved into
bts_{siemens_bs11,ipaccess_nanobts}.c
This has required that input_event() and nm_state_event() get both
converted to proper libosmocore signals instead of referencing external
symbols.
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The reason for this is quite simple: We want to make sure anyone
running a customized version of OpenBSC to operate a network will
have to release all custom modifiations to the source code.
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Instead of sending many messages we will queue the OML
messages and wait for the ACK/NACK before sending the
next message from the queue. We tag the msgb to remember
if we need to wait for an ack or not.
We keep the order of all messages, on ACKs and similiar
occassions we will drown the queue until we reach a message
that needs to be acked and then wait for that ack again.
Possible breakage can appear when we send an OML (e.g.
BS11 specific message) msg which does not need to be acked
through the abis_nm_sendmsg call. The fix will be to use
the _direct version of this method.
Re-Enable as it might have fixed something... who knows.
Conflicts:
openbsc/include/openbsc/abis_nm.h
openbsc/include/openbsc/gsm_data.h
openbsc/src/abis_nm.c
openbsc/src/gsm_data.c
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This introduces abis_nm_bs11_get_bport_line_cfg() and a parser for the result.
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... while asking the BTS to perform tests for us. The length of the
ARFCN whitelist is the actual length in bytes, not the number of 16bit
ARFCN numbers.
Also, implement a limit, either by rxlevel or by number of ARFCN
that should end up in the whitelist.
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Use libosmocore 'rxlev_stat' module to generate an ordered list
of ARFCN's, sorted by RxLev while performing test nr. 64
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Also, we now re-start the network listen test after it has finished,
so if you run a test from ipaccess-find, the test will get re-started
and re-started all the time.
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Provide the message type and the msgb of the NACK message.
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The value of the in_addr might not be 32 bit aligned and reading
it can generate an alignment error on ARM. Fix it by using memcpy
to copy the data into a local variable.
There are many more potential alignment issues that we will fix
when we hit them.
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For Siemens BS-11, the 'length' value of the ARFCN_LIST IE is interpreted in
violation of the spec. The spec says it is a length in octets, while Siemens
treats it as 'count of 16bit ARFCN values'.
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We now compute the Cell Channel Description for SI 1 by bit-wise
OR of the ARFCN bitmask of each timeslot on all the TRX of the BTS.
Also, support generating a GSM 04.08 Channel Description IE for
the hopping case (with HSN/MAIO instead of ARFCN).
What's still missing now: Sending the 04.08 Mobile Allocation IE
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For the multi TRX setup we will need to specify the right trx->nr
to be able to flash the BTS. For the BS11 case we are ignoring the
additional argument.
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Send the IPA Restart to a given BTS/TRX, change the signal callbacks
to carry the trx instead of the BTS so we have an easy access to the
right TRX and change the ipaccess-config to use that TRX. This is
fixing the restart with a multi TRX setup.
Even if we have the msg->trx, use the gsm_bts_trx_by_nr and get
the TRX from the fom header. This is because the OpenBSC and the
BTS numbering might not match for the multi TRX case.
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The previous code only sent the FILE_ID tag data part,
but according to the GSM 12.21 spec, section 8.3.6, the
full SW Description 'object' must be sent so that includes
the NM_ATT_SW_DESCR tag, the whole FILE_ID and the whole
FILE_VERSION (including tags & length fields).
Note that functionnaly on a nanoBTS 139 I couldn't see any
difference ... whatever I send in there it works ...
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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This new gprs-conf branch is intended to contain everything needed
to configure GPRS in the nanoBTS, but without implementing the SGSN/GGSN
functionality.
The SGSN/GGSN development will happen in a branch based on this branch
called "gprs-sgsn"
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This library is intended to collect all generic/common funcitionality
of all Osmocom.org projects, including OpenBSC but also OsmocomBB
The library currently includes the following modules:
bitvec, comp128, gsm_utils, msgb, select, signal, statistics, talloc, timer,
tlv_parse, linuxlist
msgb allocation error debugging had to be temporarily disabled as it depends on
'debug.c' functionality which at the moment remains in OpenBSC
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Some NM attributes are defined differently depending on
the BTS type. Having one big nm_att_tlvdef[] table for
all BTS types is no longer sufficient. This patch
* introduces 'struct gsm_bts_model' to describe a BTS model
* adds definitions of gsm_bts_model for BS-11 and nanoBTS
* changes the abis_nm_tlv_parse() function: include a bts pointer
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Whether this function changes the set or the work value depends on your
type of login. In FACTORY login it changes the set value, in FIELD login
it changes the work value (which is what is used by the BS11 to tune the
frequency).
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As this user you are able to set the PLL work value which is especially
useful if your BS11 got detuned by an inaccurate oscillator in your E1
card.
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Factoring out common logon functionality will allow us to logon as
different user. abis_nm_bs11_factory_logon now uses this function.
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At least some nanoBTS 139 send the last even (going online) as
'enabled' 'unlocked' but no avail status IE (which I guess mean an empty
set, the doc 12.21 isn't that clear about that).
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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This returns true if the gsm_nm_state can be considered 'running'.
Note that we also accept availability==0xff (which is a code for
no value) because according to 12.21 it is perfectly valid.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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* On start the vty code will call the abis_nm method and this
will set the administrative state to unlock/lock
* During startup the BTS will report its state as well and would
possible overwrite the set administrative. We are only going
to update the administrative if it was 0 before. This appears
to work on all of my tests. In case this will not be the case
for others we will have to split the administrative into two
sets one for the BTS and one for the BSC.
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* This is used in sw_load_init and sw_load_end and both needs
to be touche for every BTS. Move it into a common method.
* This was only verified on the nanoBTS.
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* Add the NACK version to the list
* Dispatch the signal when we receive the message
* Handle it in ipaccess-config by exiting the application
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* Do not issue the restart right aways if we have OML IP or
software load in the queue (hint, we need a real queue of operations
to carry out... with one big state machine)
* Change the signal_data of ipacc ACK/NACK to contain the msg type
and the bts pointer.
* Issue a restart for software load and OML and use the BTS pointer
we got out of the new signal data.
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* Add the signal definition to signal.h
* Dispatch the signal from abis_nm.c
* Handle it in ipaccess-config.c and say we are done with work
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* Be bale to abort the load when the BTS is rejecting the file..
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When we have received the End Ack we are just doing nothing as we
are done. This means rc remains -1 and we will print a warning but
there is no need to have a warning...
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* This should be shared with the sw_load_init routines
as it is the about the same.
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Somehow this should be done in the fill method..
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* The FOM header needs to be different. We need to address the
base station transceiver, bts, trx set to 0 and ts to 255
* We need to transfer the the \0 of 'id' and 'version'
* We need to issue a NM_ATT_SW_DESCR (just the value)
* We need to use 16bit length for the other two ids..
* After this our Software Load Init is getting an Ack.
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Print a big fat warning that we do not carefully check the
firmware as the format is not known and that flashing could
be dangerous..
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