This will be used by osmo-bts-omldummy to parse features strings from
the cmdline.
Note that osmo_bts_feature_name() already exists to return the longer
descriptive value_strings from osmo_bts_features_descs (_descs!).
Luckily that misses the plural 'features' in the name, so that I can
still add a properly named osmo_bts_features_name() function that only
returns the name, matching the common pattern used in osmocom code.
Related: SYS#4895
Change-Id: I699cd27512887d64d824be680303e70fff3677c1
The function osmo_bts_feature_name() is ill-named for two reasons:
- it returns descriptive text instead of just a string representation of
the name.
- The enum is named "osmo_bts_features", so the function name lacks the
"s" for "features".
Rationale: An upcoming patch adds a function to return just the name,
properly called osmo_bts_features_name(), so deprecate the weirdly named
one first.
Change-Id: I9dfdb5e81037b6000effbd340af4e5db0dcfd69c
Every other function returns a pointer to the first byte after the tlv
that was just written.
tl16v seems to be a copy and paste error from tlv16 above and t16lv seems
to count the 16-bit tag twice.
The new tests verify that the return value of *_put(buf, tag, len, val)
points to buf + *_GROSS_LEN(len).
Change-Id: I268a7e11fb5dce67ce1bd7974ab86c4d2bd002f7
Libosmocore currently does not offer any structs to encode and decode
the l1 information on RSL level and the sacch l1 header on the air
interface level. Both structs are identical but the field order in the
first octet is reversed.
Change-Id: I23c1890b89d5a0574eb05dace9f64cc59d6f6df7
This bitfield was added later and all osmocom code still uses the old
field contain 1 byte "link_id". There's only one known user of the new
bitfield which only uses it to log the SAPI name in osmocom, so no
logical breakage is expected with this change (other than fixing a log
line).
While at it, fix a typo in comment describing related enum.
Related: SYS#4909
Fixes: 392f607f2d
Change-Id: I84866f03ee642aa7f1da273c93a16a38234cfa67
Comparing struct gprs_ra_id using memcmp can be error prone, so lets add
a compare function to compare two struct gprs_ra_id values reliably.
Change-Id: I4d7558c04d9d01761516526086be5104bb2eeada
Related: SYS#5103
Using 'uint8_t' for the length argument is definitely a bad idea.
Because of this, packing more than 255 septets would not work as
expected. Deprecate the old function and use 'size_t' instead.
Change-Id: Ib1aac538afeb0a5c76a1df472d555139a496e12e
This feature is used by BSC to gain knowledge on whether a given BTS
supports GPRS Cell Change Notification (CCN) related procedures on PDCH,
and as a result enable or not by default the CCN_ACTIVE bit in SI13 to
announce the support it is allowed to use the feature.
Related: SYS#4909
Change-Id: I61991266b95d0c13d51b47906cc07846e9cf1390
This structure is needed in order to identify a given cell within the
BSS during RIM transactions.
The naming was made up by myself since I couldn't find any naming
reference for this kind of data (RAI + CI).
Since LAI + CI = CGI, then RAI + CI = CGI-PS
osmo_rai_name2 family of functions get a "2" suffix due to already
existing functions handling struct struct gprs_ra_id in gsm48.h
Change-Id: If48f412c32e8e5a3e604a78d12b74787a4786374
Some averaging methods may have additional parameters, so let's
make it easier to access them for the API user.
Change-Id: I2f4ed56837dd479dbbd10c0a7df0ed7565d3946a
Related: SYS#4918
Thanks to the CLI of nanoBTS, I noticed that upper and lower RxQual
thresholds are sent in wrong order. Only the little-endian variant
needs to be fixed, the big-endian one looks good.
Change-Id: If6ab2377bae6742f871589b529a349498775552f
Related: SYS#4918
Those routines are very useful when puzzling together BSSGP messages
with 16-bit and 32bit sized IEs.
Change-Id: I033f9a708c9d7ffad91336178231dc66233e1693
This extends our existing TLV parser with the ability to
* validate that mandatory IEs of a given message are present
* validate that all present IEs are of required minimum length
Introducing this generic layer will help us to reduce open-coded
imperative verification across virtually all the protocols we
implement, as well as add validation to those protocols where we
don't properly perform related input validation yet.
Change-Id: If1e1d9adfa141ca86001dbd62a6a339f9bf9a912
In order to transfer an RXQUAL threshold to the BTS as well, the struct
that defines the contents of RSL_IE_OSMO_REP_ACCH_CAP needs to be
updated with a 3 bit field to contain the RXQUAL value.
Change-Id: I6dda239e9cd7033297bed1deb5eb1d9f87b8433f
Related: SYS#5114 OS#4796 OS#4794 OS#4795
The recently added IE is used to transfer a bitfield, lets add a struct
that describes the bitfield. This makes the IE easier to use.
Change-Id: I326e66dae25acfab0b3fddc7278b39a8cbf7d385
Related: SYS#5114, OS#4796, OS#4794, OS#4795
3GPP TS 24.008 section 10.5.1.7 describes a Mobile Station Classmark 3
IE, which is encoded as CSN.1 struct. This means that it can not be
parsed by just casting a memory location to a struct pointer, so lets
add a parser to parse the CM3 IE.
This is fixed version of Ic8b2bfd00330235f5bed00771e421588abfaac1f,
which got reverted because it used the keyword "class" as struct member,
which lead into problems with c++ builds. This is now fixed.
Change-Id: Id8732551b33616227609cd6fcf6c3133751a89eb
Related: OS#4796 SYS#5114
This reverts commit a4939dc846,
which caused massive build failures in C++ programs like osmo-pcu
- unsurprisingly, as it calls a struct member "class", which is a
reserved keyword in C++.
Change-Id: Ia43e56385e7b580f492c560aee8ff8b1e8a0e1d8
3GPP TS 24.008 section 10.5.1.7 describes a Mobile Station Classmark 3
IE, which is encoded as CSN.1 struct. This means that it can not be
parsed by just casting a memory location to a struct pointer, so lets
add a parser to parse the CM3 IE.
Change-Id: Ic8b2bfd00330235f5bed00771e421588abfaac1f
Related: OS#4796 SYS#5114
3GPP TS 24.008, section 10.5.1.7 specifies a Repeated ACCH Capability
bit in the Classmark 3 IE. Unfortunately, there is no way specified how
the Repeated ACCH feature should be controlled on RSL level. Since it is
not unusual that BTS/BSC vendors occassionally add proprietary IEs to
different RSL messages we may pick this as a solution as well and add a
propritary RSL_IE_OSMO_REP_ACCH_CAP IE, so that we can enable repeated
FACCH/SACCH on the BTS side when we send RSL CHAN ACT or RSL CHAN MODE MODIFY
messages.
Change-Id: I61ea6bf54ea90bd69b73ea0f0f3dc19a4214207b
Related: OS#4796 SYS#5114
BSSLAP: there are APDUs transferred in BSSMAP-LE Connection Oriented
Information messages on Lb between BSC and SMLC.
Add BSSLAP coding for these APDU messages:
- TA Layer3
- TA Request
- TA Response, possibly containing Location Estimate coded in GAD
- Reject
- Reset (for intra-BSS handover during TA Request)
- Abort (for inter-BSS handover)
Add encoding and decoding tests.
Change-Id: I6409c4bcac402dc7626a3afce9081c59cd715fe8
GAD, Universal Geographical Area Description:
- raw coding for all GAD elements.
- SI-units encoding and decoding for Ellipsoid point with uncertainty circle,
which I presume is the typical "at most N meters away from cell tower located
at X,Y", which corresponds to the TA positioning currently being implemented.
- other SI-units GAD element encodings are so far not implemented.
Add encoding and decoding tests.
In gsm/protocol/gsm_23_032.h are the raw coding structs as defined in 3GPP TS
23.032.
In gsm/gad.h are structs carrying consistent units based on meters and degrees,
for convenient / less error prone handling of GAD data, and for human readable
representations of the GAD data.
The separation of the two is desirable because OsmoBSC will receive GAD data
from OsmoSMLC on the Lb interface, and pass on this data to the MSC via the A
interface. It is better to pass the GAD data as-is without de/encoding.
Change-Id: I7a9dd805a91b1ebb6353bde0cd169218acbf223c
The NM_ATT_OSMO_NS_LINK_CFG is used for NSVC configuration of osmocom based BTS to support
IPv6 NSVCs.
Change-Id: I9e279bb20940c66eea5196f281184cb4f8a5cc5f
Originally we only learned about the protocol from looking at hexdumps
without any specification or the like.
Due to a GPL request to ip.acecss, we actually do have an 'official'
resource: The packet-ipa.c from their wireshark-1.0.6ipa27.tar.gz
Let's use its contents to complete our definitions here.
Change-Id: Ic1f2b32c72d162f31b422293d2a361d528443f01
This is basically a successor of gsm0808_create_sapi_reject(), but
instead of hard-coding GSM0808_CAUSE_BSS_NOT_EQUIPPED, it allows
the caller to specify a cause value to be used. The old function
is now deprecated and should not be used.
Change-Id: Iefe5484d0fa02d5722b628b1dc237d51d3fb1a9b
Related: OS#4728
The sysmobts uses the same OML attributes as IP.access. Because the IP.access
attribute only supports IPv4 as NSVC configuration, add an own attribute.
Change-Id: Ic261bc43a07fa741b97a9c6ec5a9ed6f5ecae588
When calling a user-provided call-back function for the i460 mux
or demux, always pass a pointer to the osmo_i460_subchan the callback
relates to. This way, the user can walk the i460 data structures
to obtain information about which mux/demux instances is calling.
Change-Id: Id842c72ce371a67fe5df6694e195c281aaf607ab
There is no way for the API user to know if the TX queue of the
multiplexer runs empty. However, this is criticil since an empty TX
queue will cause dropout of a TRAU frame, which can have quite severe
effects to the receiving end. Lets add a callback that allows the APU
user to insert appropiate idle frames or silent frames into the queue
before it runs empty.
Change-Id: I88a87724235fe50d55ce6215bb385c044072226e
Related: OS#2547
The define constants for the cause codes "BTS not equipped",
"remote transcoder failure" and "notification overflow" are missing.
Lets add them including value strings.
Change-Id: Ic3e936da00bd256bae03867887851f1a4e30e218
Previous both the IPA nanobts and the sysmobts has been using the IPv4 only OML
attribute NM_ATT_IPACC_NS_LINK_CFG.
A bts with BTS_FEAT_IPV6_NSVC supports IPv6 for NSVC (PCU<Gb>SGSN) using
the new OML attribute NM_ATT_OSMO_NS_LINK_CFG.
Change-Id: I9ef7949f66764b3c639e45eb440122e318da44a0
This feature indicates if the given BTS supports paging coordination,
that is the transmission of CS paging (received on Abis) to be sent
via PACCH/PCU in PS domain fro MS with active TBF.
Change-Id: Ifb2e83eaf05dd36e5b203ed2de1a74864b039e38
Related: OS#2406
These TDMA constatns and modular arithmetic operations are used in
a number of osmo-* projects, so it makes sense to have them all
in a single header file, with minimalistic documentation.
Change-Id: Ic291fd3644f34964374227a191c7045d79d77e0d
Implement better API around 3GPP TS 24.008 Mobile Identity coding.
struct osmo_mobile_identity is a decoded representation of the raw Mobile
Identity, with a string representation as well as dedicated raw uint32_t TMSI.
The aim is to remove all uncertainty about decoded buffer sizes / data types.
I have patches ready for current osmo CNI programs, replacing the Mobile
Identity coding with this new API. Deprecate the old MI API.
osmo-bsc: I71c3b4c65dbfdfa51409e09d4868aea83225338a
osmo-msc: Ic3f969e739654c1e8c387aedeeba5cce07fe2307
osmo-sgsn: I4cacb10bac419633ca0c14f244f9903f7f517b49
Note that some GPRS and SGs related coding is done here in libosmocore and
hence currently remains using the old implementation (see previous version of
this patch: Ic3f969e739654c1e8c387aedeeba5cce07fe2307).
New API functions provide properly size-checking implementations of:
- decoding a raw MI from a bunch of MI octets;
- locating and decoding MI from a full 3GPP TS 24.008 Complete Layer 3 msgb;
- encoding to a buffer;
- encoding to the end of a msgb.
Other than the old gsm48_generate_mid(), omit a TLV tag and length from
encoding. Many callers manually stripped the tag and value after calling
gsm48_generate_mid(). The aim is to leave writing a TL to the caller entirely,
especially since some callers need to use a TvL, i.e. support a variable-size
length of 8 or 16 bit.
New validity checks so far not implemented anywhere else:
- stricter validation of number of digits of IMSI, IMEI, IMEI-SV MI.
- stricter on filler nibbles to be 0xf.
As a result, applications using osmo_mobile_identity will be stricter in
rejecting coding mistakes (some of which we currently have in our test suites,
and which we'll need to fix).
Rationale:
While implementing osmo-bsc's MSC pooling feature in osmo-bsc, this API will be
used to reduce the number of times a Mobile Identity is extracted from a raw
RSL message.
Extracting the Mobile Identity from messages has numerous duplicate
implementations across our code with various levels of specialization.
https://xkcd.com/927/
To name a few:
- libosmocore: gsm48_mi_to_string(), osmo_mi_name_buf()
- osmo-bsc: extract_sub()
- osmo-msc: mm_rx_loc_upd_req(), cm_serv_reuse_conn(), gsm48_rx_mm_serv_req(),
vlr_proc_acc_req()
We have existing functions to produce a human readable string from a Mobile
Identity, more or less awkward:
- gsm48_mi_to_string() decodes a TMSI as a decimal number. These days we use
hexadecimal TMSI everywhere.
- osmo_mi_name_buf() decodes the BCD digits from a raw MI every time, so we'd
need to pass around the raw message bytes. Also, osmo_mi_name_buf() has the
wrong signature, it should return a length like snprintf().
- osmo-bsc's extract_sub() first uses gsm48_mi_to_string() which encodes the
raw uint32_t TMSI to a string, and then calls strtoul() via
tmsi_from_string() to code those back to a raw uint32_t.
Each of the above implementations employ their own size overflow checks, each
invoke osmo_bcd2str() and implement their own TMSI osmo_load32be() handling.
Too much code dup, let's hope that each and every one is correct.
In osmo-bsc, I am now implementing MSC pooling, and need to extract NRI bits
from a TMSI Mobile Identity. Since none of the above functions are general
enough to be re-used, I found myself again copy-pasting Mobile Identity code:
locating the MI in a 24.008 message with proper size checks, decoding MI
octets.
This time I would like it to become a generally re-usable API.
This patch was first merged as Ic3f969e739654c1e8c387aedeeba5cce07fe2307 and
caused test fallout, because it re-implemented old API with the new stricter
decoding. In this patch version, old API remains 1:1 unchanged to avoid such
fallout. Applications will soon switch to the new osmo_mobile_identity API and
become stricter on MI coding when that happens, not implicitly by a new
libosmocore version.
Change-Id: If4f7be606e54cfa1c59084cf169785b1cbda5cf5
This reverts commit d1ceca9d48, as it
introduces regressions in both osmo-msc and osmo-nitb which have been
causing failing builds for several days now.
Change-Id: I4bd958d0cd2ab4b0c4725e6d114f4404d725fcf7
Implement better API around 3GPP TS 24.008 Mobile Identity coding.
struct osmo_mobile_identity is a decoded representation of the raw Mobile
Identity, with a string representation as well as dedicated raw uint32_t TMSI.
The aim is to remove all uncertainty about decoded buffer sizes / data types.
I have patches ready for all osmo programs, completely replacing the Mobile
Identity coding with this new API. Hence deprecate the old MI API.
New API functions provide properly size-checking implementations of:
- decoding a raw MI from a bunch of MI octets;
- locating and decoding MI from a full 3GPP TS 24.008 Complete Layer 3 msgb;
- encoding to a buffer;
- encoding to the end of a msgb.
Other than the old gsm48_generate_mid(), omit a TLV tag and length from
encoding. Many callers manually stripped the tag and value after calling
gsm48_generate_mid(). The aim is to leave writing a TL to the caller entirely,
especially since some callers need to use a TvL, i.e. support a variable-size
length of 8 or 16 bit.
New validity checks so far not implemented anywhere else:
- stricter validation of number of digits of IMSI, IMEI, IMEI-SV MI.
- stricter on filler nibbles to be 0xf.
Rationale:
While implementing osmo-bsc's MSC pooling feature in osmo-bsc, this API will be
used to reduce the number of times a Mobile Identity is extracted from a raw
RSL message.
Extracting the Mobile Identity from messages has numerous duplicate
implementations across our code with various levels of specialization.
https://xkcd.com/927/
To name a few:
- libosmocore: gsm48_mi_to_string(), osmo_mi_name_buf()
- osmo-bsc: extract_sub()
- osmo-msc: mm_rx_loc_upd_req(), cm_serv_reuse_conn(), gsm48_rx_mm_serv_req(),
vlr_proc_acc_req()
We have existing functions to produce a human readable string from a Mobile
Identity, more or less awkward:
- gsm48_mi_to_string() decodes a TMSI as a decimal number. These days we use
hexadecimal TMSI everywhere.
- osmo_mi_name_buf() decodes the BCD digits from a raw MI every time, so we'd
need to pass around the raw message bytes. Also, osmo_mi_name_buf() has the
wrong signature, it should return a length like snprintf().
- osmo-bsc's extract_sub() first uses gsm48_mi_to_string() which encodes the
raw uint32_t TMSI to a string, and then calls strtoul() via
tmsi_from_string() to code those back to a raw uint32_t.
Each of the above implementations employ their own size overflow checks, each
invoke osmo_bcd2str() and implement their own TMSI osmo_load32be() handling.
Too much code dup, let's hope that each and every one is correct.
In osmo-bsc, I am now implementing MSC pooling, and need to extract NRI bits
from a TMSI Mobile Identity. Since none of the above functions are general
enough to be re-used, I found myself again copy-pasting Mobile Identity code:
locating the MI in a 24.008 message with proper size checks, decoding MI
octets.
This time I would like it to become a generally re-usable API.
Change-Id: Ic3f969e739654c1e8c387aedeeba5cce07fe2307
So far, we have msgb_tl_put(), which allows putting the TL header of a TLV,
without the value part. Add the same for a variable-size length TvLV: put a TvL
header of a TvLV without the value part.
In a subsequent patch, osmo_mobile_identity will be introduced, which will
allow writing the encoded MI directly to the end of a msgb. For BSSGP_IE_IMSI,
which is a TvLV, it would hence be simplest to write only the TvL first.
Change-Id: I02cca5182fe42e40b63680a2fd470f03bcc11076
These utilities will be used by osmo-bsc to determine the Network Resource
Indicator seen in the TMSI, and (potentially) by osmo-msc to compose a TMSI
with a specific NRI, for osmo-bsc's load balancing between several MSCs.
Add utility functions to:
- extract an NRI value from a TMSI.
- overwrite the NRI value in a TMSI.
- limit an NRI in a (random) TMSI to a given list of ranges.
- add NRI value ranges to a list.
- remove them from a list.
- match NRI value (range) to a list.
- parse NRI values from string, for VTY.
- common VTY functionality of adding/removing NRI values from argv.
Add C tests for the above.
Why we need public API for NRI ranges: In osmo-bsc alone, we need the same NRI
API twice, 1: to manage/list NRI value ranges per-MSC, and 2: to manage/list
NULL-NRI values. If we also consider (potentially) adding NRI support to
osmo-msc, we need the same API twice again there. Hence it is useful to define
re-used API up here in libosmocore.
Related: OS#3682
Change-Id: Icb57a2dd9323c7ea11b34003eccc7e68a0247bf5
At the moment we print the pointer address to identify the log lines
belonging to a specific connection. Since pointer addresses are
difficult to work with, a human readable ID should be printed instead.
e.g. "This is LAPD instance for SAPI3 on bts0/trx1/ts5/lchan3"
Change-Id: Ie6742843fff809edffcac24c4dce4edf66bc71be
Closes: OS#1938
This function may be useful in a case when most of the BTS models
do support some feature, but just a couple models do not. It's
much easier to unset that feature 2/10 times than set it 8/10
times individually for each BTS model.
Change-Id: Ib5fa27287be7f1ecf2f82249b1e8c848465cbac0
Related: I431c8ab9478cbc40179903edc21043623d805da1
If a feature index does not fit to the feature vector, this
function would return a negative number that would be casted
to true. This is wrong, we should return false instead.
Change-Id: Id1ad92e7654a806bb920ae9507c88a122e8d09f0
This implements a multiplexer and de-multiplexer for the ITU-T I.460
standard. The latter covers the transmission of sub-slots of 32/16/8k
inside 64k timeslots.
Change-Id: Id522f06e73b77332b437b7a27e4966872da70eda
This implementation is taken from OsmocomBB, in particular from:
target/firmware/layer1/rfch.c
Change return type to uint16_t, because neither ARFCN, nor MAI
can be negative. Add prefix 'gsm0502_' to the function's name.
Change-Id: I8aba1578cc9d1bd89d4f5d33a6e8fedc8bea789a
Related: OS#4546
gsm48_pag_resp and gsm48_service_request: omit comments in big endian part.
dtap_header: better segment the substruct.
gsm23041_msg_param_gsm: match up whitespace / comments.
Rationale: the script is a good way to avoid bugs from manually composing the
big endian parts (for example, it detected the missing endian.h include, fixed
in I593cc5e8272469b570559206bb02b6e79797340b). However, it becomes cumbersome
if it creates numerous edits in the source tree, which cause more time spent
for whoever wanted to rather save time with it. So let's keep the code tree
matching that struct's output.
Change-Id: I7432f5337d6589262c31f5186dfd0ac32221c467
In Change-Id Idf2b99e9ef014eba26e3d4f0f38c2714d3a0520a we accidentially removed this
symbol, let's re-introduce it.
Change-Id: I9fbcbcc6619ef0c63d3682fc86adc80045baab02
Cause class is in bits 5-7 of the cause value.
For the cause value 0x52 old version returned 0xa instead of
a correct 0x5.
See section 3.2.2.5 Cause of TS 08.08 for the details.
Change-Id: I46646740c5daaafe20123e709f26dd1d2c1b6f8d
Function gsm0808_get_cipher_reject_cause() was previously available
in private gsm0808_utils.h. In practice, the exact same code is useful
to extract Cause IE value from any of the many other BSSMAP messages
which use it.
So let's rename it to gsm0808_get_cause() and make it avilable
to everyone to use.
Change-Id: Idf2b99e9ef014eba26e3d4f0f38c2714d3a0520a
Affected:
- struct gsm48_range_1024
- struct gsm48_range_512
- struct gsm48_range_256
- struct gsm48_range_128
In commit [1], the automatic little-to-big-endian compatibility by
struct_endianness.py introduced doubled little/big endian struct listings by
accident, resulting in a wrong big endian structure (due to double reversal in
the original big endian part). Remove the old conditionals around the new
automatic ones to fix the structs for big endian.
[1] Ia0b99d76932aeb03e93bd0c62d3bf025dec5f9d2
Change-Id: Iaccdd4a204841209f5eb50f336b30962ff00da0b
this causes problems when compiling user applications
/usr/bin/ld: ../../src/libvlr/libvlr.a(vlr_lu_fsm.o):/usr/local/include/osmocom/gsm/protocol/gsm_29_118.h:184: multiple definition of `sgsap_ie_tlvdef'; msc_main.o:/usr/local/include/osmocom/gsm/protocol/gsm_29_118.h:184: first defined here
Change-Id: Iaa1d36c7a9bb64aa84ee85fa3e40f6b3560fe693
In order to dissolve info_meas_ind_param in ph_data_param and
ph_tch_param we need to add the measurement related struct members to
ph_data_param and ph_tch_param as well so that those indications can
also carry measurement data.
Change-Id: I2c34b02d329f9df190c5035c396403ca0a4f9c42
Related: OS#2977
The new OSMO_DEPRECATED_OUTSIDE macro is similar to the existing
OSMO_DEPRECATED_OUTSIDE_LIBOSMOCORE, but allows to override the
deprecation message.
Let's use it to suspend deprecation warnings related to:
- gsm48_decode_bcd_number(),
- osmo_ecu_fr_conceal(),
- osmo_ecu_fr_reset(),
as they're intentionally used in scope of the library.
Change-Id: I1b0eff1396776900c1286e41da3aee3ff78b326e
This is a bit of a hack, as we want to maintain binary compatibility
without breaking existing users of libosmocore. To do so, we use the
'num_auth_vectors' field in two ways now:
* In the existing use case as part of SEND_AUTH_INFO_RESPONSE, it
indicates the number of vectors stored in the 'auth_vectors' field
* In the new use case as part of SEND_AUTH_INFO_REQUEST, it indicates
the number of vectors actually requested by the MSC/SGSN/MME.
Change-Id: Iaecc47280f8ce54f3e3a888c1cfc160735483d0f
OSMO_GSUP_TO_MSGT_RESULT() is needed by osmo-hlr for osmo_gsup_req.
The others are added for completeness' sake.
Related: I3a8dff3d4a1cbe10d6ab08257a0138d6b2a082d9
Change-Id: I6e38a3bb8447f8f212f8d6f5b10a5d0df59323d7
GSUP routing was introduced when adding the E interface. Hence that was the
first realm where routing errors could occur. I did notice back then that this
message type was special: it does not convey a response to a particular message
kind -- it does not make sense, for example, to return an Updating Location
Error cause, and do that for all conceivable message types. Instead, this tells
the sender that a deeper error exists, i.e. that the desired peer is completely
gone and unreachable.
I did not foresee though that for D-GSM, there would also be arbitrary GSUP
proxy routing, and that this error is not limited to E interface semantics.
From today's point of view, adding the "_E_" in the name was a mistake.
Remove that "_E_" to yield OSMO_GSUP_MSGT_ROUTING_ERROR (with unchanged message
type discriminator), but provide a #define linking the old name
OSMO_GSUP_MSGT_E_ROUTING_ERROR to the new one.
The only visible change should be that osmo_gsup_message_type_names[] now
returns the new name without "_E_". I am not aware of any regression test
fallout from that.
Change-Id: Ic8e8bd11522d6c51ac7aaf946516cbce26bc6e1e
New fields are put inside a union to keep backward compatibility with
potential older users of the struct.
Change-Id: I235635800c0de47b1e2b9ec9c7191418f6003554
Some compilers don't like declaration of enums in header files like we
do sometimes for structs:
enum gsm_band;
void foobar(enum gsm_band band);
triggers:
error: use of enum 'gsm_band' without previous declaration
Fixes: b99f4ca2d8
Related: OS#4244
Change-Id: I6c2102c763f565bbe3c8dd7e5b4e04c4a45fff67
The calculation of the beginning of a block for TCH/F, TCH/H and FACCH
can be challenging since those channels are affected by the diagonal
interleaving of the TCH channels. However, GSM 05.02 Section 7 Table 1
of 5 specifies how the blocks are distributed over the TDMA frame
interval. Lets add a mapping function that is based on that table
Related: OS#3803
Change-Id: I3d71c66f8c401f5afbad9b1c86c24580dab9e0ce
OSMO_GSUP_SUPPORTED_RAT_TYPES_IE corresponds to the Supported RAT Types
Indicator from 3GPP TS 29.002. See 8.1.2 MAP_UPDATE_LOCATION service,
which indicates the capabilities of the MSC/VLR to the HLR.
So far, have room for eight RAT types in the gsup_msg. That is an arbitrary
random choice without any rationale.
OSMO_GSUP_CURRENT_RAT_TYPE_IE is useful to communicate the currently
used RAN / RAT type of the current subscriber during Location Updating Request.
Change-Id: I93850710ab55a605bf61b95063a69682a2899bb1
As 3GPP doesn't specify how the BSC shall communicate ETWS Primary
Notifications over Abis/RSL, we have to use a vendor-specific RSL
message for this. And in order to know if the peer supports this
feature, we introduces BTS_FEAT_ETWS_PN.
Change-Id: I89c24a81ada6627694a9632e87485a61cbd3e680
Related: OS#4046, OS#4047
The CBSP code assumed that gsm0808_decode_cell_id_u() would return
the number of bytes it has consumed/parsed. But it actually always
returns '0', whcih makes us run in an endless loop :(
Change-Id: I5758af4ec11a827d4b888a3a16c4ec22de90a7d6
Rather than having the encoder/decoder library print some log
messages in case of encoding/decoding errors, let's provide something
akin to 'errno', but with a string instead of a numeric error code.
The 'osmo_cbsp_errstr' global variable (if set) contains a
human-readable string describing the most recent encoding/decoding error.
It exists separately for each thread and hence can be used safely in
multi-threaded environments.
Change-Id: Id9a5a595a76ba278647aee9470ded213d8464103
This introduces definitions as well as a parser+encoder for the
Cell Broadcast Service Protocol (CBSP) as specified in 3GPP TS 48.049.
CBSP is used on the interface between CBC and BSC.
Related: OS#3537
Change-Id: I5b7ae08f67e415967b60ac4b824db9e22ca00935
The link quality, defined by C/I (Carrier-to-Interference) ratio,
can be computed from the training sequence of each burst, where we
can compare the "ideal" training sequence with the actual training
sequence and then express that in cB (centiBels, dB * 10).
By analogy with both RSSI and ToA, it can be used to filter out
false-positive detections and ghost Access Bursts.
Change-Id: Ie2a66ebd040b61d6daf49e04bf8a84d3d64764ee
TS 04.06 specifies a N200 re-transmission counter that depends on the
channel type, which we didn't care about at all so far. Let's have the
caller tell us the channel type so we can internally look up the correct
N200 value for it.
At the same time, permit the user to specify T200 re-transmission timer
values for each SAPI on both DCCH and ACCH, which is required at least
in the BTS as per GSM TS 12.21. Also, extend the timer resolution of
the API from seconds to milli-seconds, which is more applicable as
particularly on the FACCH the recommended values are in the 200ms range.
Change-Id: I90fdc4dd4720d4e02213197c894eb0a55a39158c
Related: OS#3906
Related: OS#2294
Related: OS#4037
This function parses a single Cell ID list element into a
'union gsm0808_cell_id_u'. This function is going to be used
by the upcoming CBSP support.
Related: OS#3537
Change-Id: I08b33881667aa32f01e53ccb70d44d5b79c7c986
The library should either provide functions that implement encoding
of those rest octets, or it shouldn't. Providing a function that
doesn't do anything but pad the buffer is useless.
Change-Id: Ie10684de6a6b2663e2a871fcdb2b275b6ad7a1e7
Neels Hofmeyr
Daniel Willmann
Philipp Maier
Pau Espin
Vadim Yanitskiy
Harald Welte
Sylvain Munaut
Oliver Smith
Eric Wild