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This is the first step in creating this repository from the legacy openbsc.git.
Like all other Osmocom repositories, keep the autoconf and automake files in
the repository root. openbsc.git has been the sole exception, which ends now.
Change-Id: I9c6f2a448d9cb1cc088cf1cf6918b69d7e69b4e7
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Adds a basic version of a pcu socket interface, similar
to the one that can be found in osmo-bts.
Change-Id: Ib13cb4099d12fa71e9e0b8727e19ab29e11909b2
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The newline and $NULL manage to append a trailing space to the 'openbsc' dir.
This was broken in commit 7b6673fa06dada3ec4586b1c0d735e9df4177a48
"Consistenly format variables in */Makefile.am files"
by Change-Id Ifa21513c007072314097b7bec188579972dc1694
Add a comment to prevent this in the future.
Reported-by: Andreas Mueller <andreas.mueller@criticallabs.org>
Change-Id: I218027459e3b2aaa817d91eb3f69d9c0b10dcd4e
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In a future commit, gsm_subscriber will be replaced by vlr_subscr, and it will
not make sense to use vlr_subscr in libbsc. Thus we need a dedicated BSC
subscriber: struct bsc_subscr.
Add rf_policy arg to bsc_grace_paging_request() because the bsc_subscr will no
longer have a backpointer to gsm_network (used to be via subscr->group).
Create a separate logging filter for the new BSC subscriber. The implementation
of adjusting the filter context is added in libbsc to not introduce
bsc_subscr_get/_put() dependencies to libcommon.
During Paging Response, fetch a bsc_subscr from the mobile identity, like we do
for the gsm_subscriber. It looks like a duplication now, but will make sense
for the VLR as well as for future MSC split patches.
Naming: it was requested to not name the new struct bsc_sub, because 'sub' is
too ambiguous. At the same time it would be fine to have 'bsc_sub_' as function
prefix. Instead of struct bsc_subscriber and bsc_sub_ prefix, I decided to
match both up as struct bsc_subscr and bsc_subscr_ function prefix. It's fast
to type, relatively short, unambiguous, and the naming is consistent.
Add bsc_subscr unit test.
Related: OS#1592, OS#1594
Change-Id: Ia61cc00e8bb186b976939a4fc8f7cf9ce6aa3d8e
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Prepare for replacing gsm_subscriber with vlr_subscriber. vlr_subscriber will
not make sense to be used in gprs, so have a dedicated GPRS subscriber struct.
(Could change if the gprs code were to use libvlr; is currently independent).
Related: OS#1592
Change-Id: Ia8b391ee009c8545763cba04505be3947835120e
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With the OsmoMSC program coming up, the name osmo_msc_data becomes even
more confusing than it already is. Clearly indicate it as libbsc's data of
a remote MSC by prefixing with bsc_.
Also, the Osmocom community has in the meantime agreed to have the osmo_
prefix only in libosmocore, to avoid naming conflicts in case things are
moved there. So while renaming anyway, also drop the osmo_ prefix.
Change-Id: I13554563ce9289de126ba0d4cf329bafcda35607
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Related: OS#1592
Change-Id: I05bd65ff81b0f70f68217b2e0a9466e160bdbdec
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This corresponds to change-id If5099e60681a215e798b6675f21813f26769c253 in
libosmocore, which is now required to build openbsc.
Related: OS#1592
Change-Id: I2f06aaa6eb54eafa860cfed8e72e41d82ff1c4cf
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This is in preparation for moving gsup to libcommon, which is in turn
preparation for libvlr.
Related: OS#1592
Change-Id: I9c95d00f1a9420887a44c938b1d0ee3e20586f4c
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bsc_network_init() is more fit to live in a BSC specific header, move it to new
common_bsc.h. It will probably also absorb the BSC-specific part of gsm_network
in the future.
Adjust header includes across the board. Particularly, fix abis_nm.h by
explicitly including gsm_data.h: it so far relied on other headers to do that,
which now is no longer always given.
Change-Id: I9edfb1e748bb1cb484fadd48b0406f5b3098e89b
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This will gradually soak up code shared by libbsc and libmsc.
Change-Id: If34e2bd38a099d0799238337468d56e0305ab8ae
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the OML attribute tables are hardcoded. To set variable parameters,
the hardcoded data structure (tlv) is patched on byte level during
runtime. This patch replaces this mechanism.
- Replace hardcoded OML attribute tables with dynamically
generated TLV structures.
- Add unit tests to check if the OML attribute tables are
generated correctly
- Put OML attribute table generator code in a separate file:
bts_ipaccess_nanobts_omlattr.c
Change-Id: Ibeb34a84912d6cf695f553a34c69320fca7d08fa
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- Add compression control for V.42bis Add code to handle compression
(gprs_sndcp_dcomp.c/h)
- Add Adjustments in SNDCP
- Add VTY commands
Change-Id: I6d36cbdf2f5c5f83ca9ba57c70452f02b8582e7e
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- Edit previously committed V.42bis implementation to function
outside IAXmodem.
- Add unit test to verify the correct function of V.42bis
Change-Id: I689413f2541b6def0625ce6bd96f1f488f05f99d
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- Add module to handle compression entities
- Add module to control header compression
- Introduce VTY commands for heade compression configuration
- Add changes in sndcp and llc to integrate header compression
Change-Id: Ia00260dc09978844c2865957b4d43000b78b5e43
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The previously pushed slhc implementation has been modified to compile
and function outside of the kernel. Also debug log messages were added
and datatypes ware matched. The implementation is now ready to be used
Change-Id: I7a638e88a43b3eb9d006751a03ef2570e36613f0
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The SNDCP-XID (or layer-3 xid) is used to exchange layer-3 parameters
such as compression. The encoder encodes a bytestream that is then
sent as regular XID field from LLC.
We will need the SNDCP-XID to negotiate the parameters for our
upcomming GPRS data and header compression features
Change-Id: If2d63fe2550864cafef3156b1dc0629037c49c1e
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Change-Id: Ifa21513c007072314097b7bec188579972dc1694
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Co-Authored by dwillmann, laforge, nhofmeyr
Change-Id: Iffc26f9c73cb15463948f7435b72ac1747aabdb3
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For some reason gprs_sndcp.h is located in src/gprs. This commit moves
gprs_sndcp.h to include/openbsc and fixes the include path in
gprs_sndcp.c and gprs_sndcp_vty.c
Change-Id: If4e4f1252c81d7907c1b4d738c982bb172b128c9
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The lle-xid encoder/decoder is needed to encode and decode llc
xid parameter messages. We need this to exchange sndcp-parameters
(SNDCP-XID) and also simple parameters such as encryption IOVs
Change-Id: Ia06e4cb08bf9b48c2a4682606d1b1a91d19a9d37
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This requires the corresponding commit in libosmocore.
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This needs the corresponding commit in libosmocore which imports
the related functions
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This is a preparation to move the related code to libosmocore, whilst
at the same time generalizing it from GPRS Subscriber Update Protocol
to the Osmocom Generic Subscriber Update Protoco.
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This requres the corresponding commit in libosmocore.
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First steps towards a new GTP hub. The aim is to mux GTP connections, so that
multiple SGSN <--> GGSN links can pass through a single point. Background:
allow having more than one SGSN, possibly in various remote locations.
The recent addition of OAP to GSUP is related to the same background idea.
(This is a collapsed patch of various changes that do not make sense to review
in chronological order anymore, since a lot of it has thorougly transmorphed
after it was first committed.)
Sponsored-by: On-Waves ehf
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Add oap.[hc] and oap_messages.[hc].
Sponsored-by: On-Waves ehf
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Add new kitchen sink openbsc/utils.h and libcommon/utils.c to make three so far
static functions public (so I can use them in the upcoming OAP code).
A place to put them could have been the gprs_utils.h, but all general functions
in there have a gprs_ prefix, and todo markings to move them away. All other
libcommon headers are too specific, so I opened up this kitchen sink header.
Replace the implementation of encode_big_endian() with a call to
osmo_store64be_ext(). See comments.
Apply the change in Makefiles and C files.
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Move the filter methods to the filter module. This is
still only usable for the NAT and the _dt/_cr filter
routines need to move back to the bsc_nat in the long
run.
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We depend on libosmo-netif unconditionally. Let's use this
definition of rtp and have one portability issue less.
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This commit adds the client code to get subscriber information from a
remote server. It provides an IPA over TCP connection to transmit and
receive GSUP messages.
Sponsored-by: On-Waves ehf
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This patch adds functions to encode and decode GSUP messages. This
does not include the layer 1 framing (IPA). The messages so far
supported are: send_auth_info_*, update_location_*,
location_cancellation_*.
Sponsored-by: On-Waves ehf
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This extends osmo_nitb to offer a UDP feed of real-time measurement
reports, which can be used by (a variety of) external tools for
visualization or other processing.
We also add a small ncurses based tool (meas_vis) which shows a
baragraph display of the last few mobile stations that were active,
indicating their uplink/downlink receive level and quality.
<WARNING>
This sends non-portable structures like gsm_meas_rep over UDP
and assumes the receiver has identical alignment and endianness! Before
this feature is merged, it either needs to be converted to a unix domain
socket (but they don't do multicast, which would be nice) or the wire
format needs to change into something portable with defined alignment
and encoding
</WARNING>
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Due libdbi 0.9.x being broken I didn't run make distcheck and
apparently Jacob has a similar issue and didn't run it either.
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... causing header files to be missing from 'make dist'.
this was introduced in ba874b82be0ad1752b46009ba403f9b7bf24492d
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We intend to move some of these routines to libosmocore but to avoid
a feature symbol clash we are prefixing these routines with gprs_.
Done with Jacob
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This patch moves the files relevant to transcoding from
src/osmo-bsc_mgcp to src/libmgcp and src/include/openbsc. Makefiles
and include directives are being updated accordingly.
Sponsored-by: On-Waves ehf
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This patch adds the voice muxer. You can use this to batch RTP
traffic to reduce bandwidth comsuption. Basically, osmux transforms
RTP flows to a compact batch format, that is later on decompacted
to its original form. Port UDP/1984 is used for the muxer traffic
between osmo-bsc_nat and osmo-bsc_mgcp (in the BSC side). This
feature depends on libosmo-netif, which contains the osmux core
support.
Osmux is requested on-demand via the MGCP CRCX/MDCX messages (using
the vendor-specific extension X-Osmux: on) coming from the BSC-NAT,
so you can selectively enable osmux per BSC from one the bsc-nat.cfg
file, so we have a centralized point to enable/disable osmux.
First thing you need to do is to accept requests to use Osmux,
this can be done from VTY interface of osmo-bsc_nat and
osmo-bsc_mgcp by adding the following line:
mgcp
...
osmux on
osmux batch-factor 4
This just initializes the osmux engine. You still have to specify
what BSC uses osmux from osmo-bsc_nat configuration file:
...
bsc 1
osmux on
bsc 2
...
bsc 3
osmux on
In this case, bsc 1 and 3 should use osmux if possible, bsc 2 does
not have osmux enabled.
Thus, you can selectively enable osmux depending on the BSC, and
we have a centralized point for configuration from the bsc-nat to
enable osmux on demand, as suggested by Holger.
At this moment, this patch contains heavy debug logging for each
RTP packet that can be removed later to save cycles.
The RTP ssrc/seqnum/timestamp is randomly allocated for each MDCX that
is received to configure an endpoint.
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The jenkins runs make distcheck in the default configuration and
not with the nat enabled.
DISTCHECK_CONFIGURE_FLAGS="--enable-nat" make distcheck
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* It is a trie. The max depth of the trie is the length of the
longest prefix. The lookup is O(lookuped_prefix), but as the prefix
length is limited, the lookup time is constant.
* Each node can hold the entire prefix, has place for the rewrite
rule with up to three digits.
* A trie with 20k entries will take about 3MB ram.
* Filling the trie 100 times takes ~800ms on my i7 laptop
* 10.000.000 lookups take 315ms.. (for the same prefix).
* 93/99 lines are tested, 6/6 functions are tested, 49 of 54 branches
are tested. Only memory allocation failures are not covered
* A late addition is to handle the '+' sign and to increase the number
of chars in the rewrite prefix. The timing/line coverage has not
been updated after this change.
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I saw the old copy of the "Appendix J" code too late and I have
discovered some quirks and I am more familar with my implementation.
Most noticable 'w' only needs to be as big as the input arfcn but
requires the 'w' to be initialized. The power_of_2 implementation
differs as well (mine matches the output of wirehsark).
The f0 could be chosen in a better way but right now picking
the lower bound is the easiest. It is not clear if to use
modulo if the range is chosen in the middle. This can be improved
in the future. Right now I have no bit fiddling for range128, 256
and 1024 as I was running out of time.
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This also removes the dependency to osmo_sock() inside libcommon and
replaces it with osmo_sock_* from libosmocore
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In order to have the MNCC application reliably decide on the codec type,
it needs to know if we are running on a TCH/F or TCH/H. Thus, we pass
lchan_mode as a new parameter to the 'struct gsm_mncc'
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