The msgb_wrap_with_TL() is generally useful so it make sense to make it
public to facilitate code re-use.
Other helpers can be implemented as trivial wrappers over existing tlv.h
functions. Update headers and code accordingly.
Change-Id: I37e91d031fba28cf1c6735b8069b0265746f55e6
Add values indicating that LCLS control/config/status value has not been
received yet.
Change-Id: I52dc6a52f5ee043ed2c1625ffecfd495e3c746b1
Related: OS#2487
* add Class definitions
* add helper to check for extended bit
* add helper to get Cause's Class
* use enum in gsm0808_cause_name() and gsm0808_create_cipher_reject() to
avoid confusion between class and cause
* update gsm0808_create_cipher_reject() comments
Change-Id: I31b31dfc22eb4b6b07089e1255246ac458125340
Related: OS#3187
The value strings for the SGSAP IEI are missing, lets add a set of value
strings and a function to retrieve them.
Change-Id: I2787303174f74ffba86675bce2c12f680d8ea708
Related: OS#3615
The API documentation lacks the the description for the last parameter,
lets add a description for it.
Change-Id: Ibcd25d3a7ddd7075eb15daff6dba42236d14d945
* add note about (yet) unsupported standard feature
* use enum constant instead of hex value
Change-Id: I5cc5fc1ae8d5474dbc8d3385a493adf6420a3c98
Related: OS#3187
The function that generates the clear command takes a parameter
"reason", which is the cause code. Lets give it the name "cause" to have
a coherent naming scheme that matches the other functions and the 3gpp
specs.
Change-Id: I7b6c15e8fa8db13deef5041095944ca1c58fb99f
The api documentation names a parametery by a different name than it is
listed in the parameter list of the function. Lets make the apidoc
coherent.
Change-Id: Id21ed1e920fb64522a734f206efbe2871ec05b06
Missing (unset) type of to be encoded message is not a memory
allocation failure (-ENOMEM), this is definitely a mistake.
Change-Id: Ibbac18e2b68b765c17c2bc959c4c085037953a7f
3GPP_TS_48.008, 3.2.2.103 Speech Codec List states the following:
"The length indicator (octet 2) is a binary number indicating the
absolute length of the contents after the length indicator.
The length depends on the number and type of Speech Codec Elements
to be included. The minimum length of one Speech Codec Element is 1
octet and the maximum length is 3 octets. The maximum number of
Speech Codec Elements within the Speech Codec List is not defined."
This clearly refers only to the length of a single speech codec
element but not on the overall list. So speech codec lists with
length 0 are indeed permitted by the spec.
- Remove the assertion that checks on zero length speech codec
lists.
Change-Id: I1eb1f4466b98bdd26d765b0e4cc690b5e89e9dd6
Related: OS#3657
Add a function to convert S0-S15 bits to struct gsm48_multi_rate_conf,
which hold the codec settings for AMR.
Change-Id: I973736273c236eee84decf15868190e339c3fed4
Related: OS#3548
parameter cfg in gsm0808_sc_cfg_from_gsm48_mr_cfg() is used read only.
Lets add a const to make this clear to the compiler.
Change-Id: I31e8d273b070b0afc446a298299d4f502d6c396b
Add a function to convert struct gsm48_multi_rate_conf, which holds the
codec settings for AMR, to S0-S15 bit representation as defined in
3GPP TS 48.008 3.2.2.49
This resurrects change-id I4e656731b16621736c7a2f4e64d9ce63b1064e98
which was reverted in I9e0d405e303ed86d23703ca6362e958dddb2f861
due to gsm0808_test failing.
The test failure is fixed by properly clearing the struct
gsm48_multirate_cfg prior to running tests (add memset(0)).
Change-Id: Ia782e21c206c15e840226d79b4209d13658ee916
Related: OS#3548
Add a function to convert struct gsm48_multi_rate_conf, which holds the
codec settings for AMR, to S0-S15 bit representation as defined in
3GPP TS 48.008 3.2.2.49
Change-Id: I4e656731b16621736c7a2f4e64d9ce63b1064e98
Related: OS#3548
The cell identifier list parameter is mandatory. Document it as
such, and tweak code which treated it like an optional parameter.
No functional change. The existing code already asserts that
a non-NULL value is passed for this parameter.
Change-Id: I3716f9d5b210e0a7e6f45c9fe3fc34024e5234ad
Related: OS#3021
There was gsm0480_l3hdr_push() declared in a header file, but
not exposed in 'libosmogsm.map'. Furthermore, for some reason
it was a part of GSM 04.80 API, what is not actually correct.
Let's rename this symbol, and properly expose it as a part of
the GSM 04.08 API. Also, let's introduce an auxiliary wrapper
for messages, where the transaction identifier is required
(see GSM 04.07, section 11.2.3.1.2).
Change-Id: I8a045efe8335d83fcbe8d43eb180972e3b1d9dda
I was contacted by the (previously unknown) author who provided
the new location of the original code.
Change-Id: I2dabab20ad018ce473817986bdb250131c010bf1
In the previous commit we deprecated ipa_ccm_idtag_parse() but
also removed ipa_ccm_idtag_parse_off(), for which I couldn't find
any users. However, legacy openbsc.git still uses this function,
so let's re-introiduce it in its original form.
Change-Id: Ibfe53b04340eb355c8bfb8453a2af1522a4b6baf
In the past, the function ipa_ccm_idtag_parse() was used to parse
the payload of IPA CCM ID RESP packets. However, the function was
based on a possible misunderstanding of the message encoding, and
callers actually counted the first (upper) length nibble as part
of the header and passed a pointer to the second
(lower) length nibble of the first TLV into this function. As such,
it was unfixable, and had to be replaced with a new function called
ipa_ccm_id_resp_parse(). At the same time, we also add
ipa_ccm_id_get_parse() to parse the slightly different format of
the IPA CCM ID GET payload.
We can never be 100% sure what is "correct", as our understanding
of the protocol is entirely based on protocol analysis, without any
official documentation available.
This patch also introduces unit test coverage for both of the new
functions.
Revert "ipa: Add libosmogsm.map entry for ipa_ccm_idtag_parse_off"
This reverts commit 7f31c90b80.
Revert "ipa: Properly parse LV stream of a ID_GET request"
This reverts commit f558ed4bb9.
It introduced a function/behavior that was not originally intended:
The parse of IPA CCM ID GET (8bit length followed by 1 byte tag
and variable-length payload) instead of the IPA CCM ID RESP (16bit
length followed by 1 byte tag and variable-length payload).
Change-Id: I1834d90fbcdbfcb05f5b8cfe39bfe9543737ef8f
As we're moving this to a common/shared library now, we need to use
the osmo_ namespace prefix for symbol names, struct/type names and
constants.
Change-Id: Ie36729996abd30b84d1c30a09f62ebc6a9794950
This imports the code from osmo-msc 6afef893e17bce67e4d4119acd34d480ed03ba77
with minimal changes to make it compile. Symbol renaming to osmo_
prefix is done separately in a follow-up patch to have a as-clean-as-possible
import first.
Change-Id: I9bc38102318da02d1fe46ef516df3cfd6bf8e3da
Contrary to the existing gsm0480_create_ussd_resp(), the new function
only generates the value part of the FACILITY IE, and not the IE
Tag/Length or the 04.08 L3 header. This is needed in the context of
GSUP-encapsulated USSD, as here we don't work with L3 messages, but
only pass on the FACILITY IE value.
Change-Id: Ide240279240322f643e142229eb7829f538c6314
enum gsm0808_permitted_speech does not have any value strings. Lets
add value strings to make debugging easier.
Change-Id: I5b5612a5df2758b0137a34c17f7c8c2b3f07c806
The conv_gen.py utility was tested against both Python 2 and 3,
so there is no need to enforce Python 2. Also, having:
#!/usr/local/bin/python{2|3}
is a bad idea, because Python may be installed in a different location.
Change-Id: I6007d481047b584db13d6eda70fb99f11f9ddaa1
A loooong time ago, we introduced osmo_panic() as a wrapper around
abort(). The advantage is, that this wrapper can be overridden, and
that it will also work in embedded (bare iron) targets, where the
abort simply translates to an infinite loop.
Change-Id: I5a70eb65952cbc329bf96eacb428b07a9da32433
Add:
gsm0808_create_handover_detect()
gsm0808_create_handover_complete()
gsm0808_create_handover_failure()
To existing structs gsm0808_old_bss_to_new_bss_info and
gsm0808_handover_required, add a final 'more_items' flag that makes future
extensions API and ABI compatible.
Fix the msgb string for Handover Request Ack.
Extend some API doc comments.
Related: OS#2283 (inter-BSC Handover, BSC side, MT)
Change-Id: I03ee7ce840ecfa0b6a33358e7385528aabd4873f
In Change-Id I1cee271fed0284a134ffed103c0d4bebbcfde2a8 we added support
for a new session state IE, but we didn't add any value_string array
for string conversion of it. Let's fix this.
Change-Id: I3d9f087786dc37c42498fa9a2be07483ec93ba7b
This function can be used to resolve the error message type for
a given message type. Can be used by generic error handlers that
work for any incoming message type.
Change-Id: Ic637bec53dd7fe3ec83da99b49b4eae34d5602b2
This function can be used when there is only a part of GSM 04.80
message available - Facility IE, e.g. when a message is carried
over GSUP/MAP. Let's expose it.
Refactoring includes the following:
- adding the 'gsm0480_' prefix;
- correcting inverted return value;
- cosmetic code style changes.
Change-Id: I623c39ffbe6cdee65eade8435a2faa04d0da193e
In some cases, there is no need to parse the whole message,
e.g. during the conversion from DTAP to GSUP/MAP. This
function can be used to extract given IE from a message.
Change-Id: I3989d061903352473305f80712f1a1560d05df3d
In order to be able to transfer SS/USSD messages via GSUP,
this change introduces the following new message types:
- OSMO_GSUP_MSGT_PROC_SS_*,
and the following new IE:
- OSMO_GSUP_SS_INFO_IE
which represents an ASN.1 encoded MAP payload coming to/from
the mobile station 'as is', without any transcoding.
Change-Id: Ie17a78043a35fffbdd59e80fd2b2da39cce5e532
Related: OS#1597
Unlike TCAP/MAP, GSUP is just a transport layer without the
dialogue/context. This prevents us from having session based
communication, required e.g. for USSD. But we can emulate
TCAP dialogue by adding additional IEs, which would allow
to relate each message to a particular session.
This change introduces the following IEs:
- OSMO_GSUP_SESSION_ID_IE,
- OSMO_GSUP_SESSION_STATE_IE,
which optionally can be used to indicate that the message is
related to a session with given ID, and to manage session
state, i.e. initiate, continue, and finish.
Change-Id: I1cee271fed0284a134ffed103c0d4bebbcfde2a8
Related: OS#1597
Max
Pau Espin
Philipp Maier
Harald Welte
Neels Hofmeyr
Keith Whyte
Kevin Redon