gsm_data_shared.h includes e1_input.h of libosmo-abis, add the
LIBOSMOABIS_CFLAGS to Makefile.am, remove AM_LDFLAGS at the same
time as we only build .a archives.
GSM 04.64 8.4.2 asks to ignore UI frames if the DLCI is not known,
or if the "(V(UR)- 32) <= N(U) < V(UR)". E.g. if we want to have
V(UR) == 511 and this frame is dropped, we would ignore N(U)'s
0 to 510. Calculate the delta.
The code is based on Jonathan Santos's "LLC UI window" fix but the
issue was discovered independly.
In case a MS (of which we have no MM context) sends us anything but a
GMM ATTACH REQUEST, we need to send it a LLC XID RESET (by means of
issuing LLGMM-RESET.req). Otherwise the phone will expect us to send a
specific unacknowledged sequence number that we don't know.
Thanks to Holger for pointing this bug out to me.
It seems to commonly occur when a MS is doing network re-selection and
(erroneously) sends a RA UPD REQ instead of an ATTACH REQ. The RA UPD
REJ that we sent was never seen by the GMM entity in the MS, as the LLC
entity discarded it due to sequence number mis-match.
Using LLGMM-RESET.req, the GMM can request the LLC of the MS to reset
all its parameters, particularly the sequence numbers. We don't yet do
XID RESET retransmissions, and we don't yet generate a LLGMM-RESET.conf
primitive back to GMM.
Ubuntu 11.10 has changed some linker/compiler flags. Some fixes for this
can be seen here[1]. In general the to be linked libs need to be moved into
the LDADD section of parameters. This is with the old BFD linker (not gold).
This is likely to end in some ping-pong with other versions of the linker.
[1] https://bugs.launchpad.net/ubuntu/+source/nis/+bug/771034
Errors:
/usr/bin/ld.bfd.real: bsc_hack.o: undefined reference to symbol 'osmo_init_ignore_signals'
/usr/bin/ld.bfd.real: note: 'osmo_init_ignore_signals' is defined in DSO /home/ich/install/openbsc/lib/libosmocore.so so try adding it to the linker command line
/home/ich/install/openbsc/lib/libosmocore.so: could not read symbols: Invalid operation
...
../../src/libbsc/libbsc.a(rest_octets.o):/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:381: more undefined references to `bitvec_set_bit' follow
../../src/libbsc/libbsc.a(rest_octets.o): In function `rest_octets_si13':
/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:382: undefined reference to `bitvec_set_uint'
/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:383: undefined reference to `bitvec_set_uint'
/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:385: undefined reference to `bitvec_set_bit'
/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:402: undefined reference to `bitvec_set_bit'
/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:403: undefined reference to `bitvec_set_uint'
gprs_gmm.c:240:2: warning: passing argument 4 of ‘gprs_llc_tx_ui’ discards qualifiers from pointer target type
../../include/openbsc/gprs_llc.h:151:5: note: expected ‘void *’ but argument is of type ‘const struct sgsn_mm_ctx *’
gprs_gmm.c:349:11: warning: unused variable ‘ptsig’
gprs_gmm.c:601:5: warning: too many arguments for format
gprs_gmm.c:987:25: warning: initialization discards qualifiers from pointer target type
gprs_gmm.c:1010:6: warning: ‘rc’ may be used uninitialized in this function
This is a big patch that ports openBSC over libosmo-abis.
Sorry, the changes that are included here are all dependent
of libosmo-abis, splitting them into smaller pieces would
leave the repository in some intermediate state, which is
not desired.
The main changes are:
- The directory libabis/ has been removed as it now lives in
libosmo-abis.
- new configuration file format for nanoBTS and HSL femto, we
need to define the virtual e1_line and attach it to the OML
link.
- all the existing BTS drivers (nanoBTS, hsl femto, Nokia site,
BS11 and rbs2000) now use the new libosmo-abis framework.
- use r232 input driver available in libosmo-abis for bs11_config.
- use ipa_msg_recv instead of old ipaccess_read_msg function.
- delete definition of gsm_e1_subslot and input_signal_data.
These structures now lives in libosmo-abis.
Most of this patch are deletions of libabis/ which has been
moved to libosmo-abis.
This patch also modifies openBSC to use all the new definitions
available in libosmocore and libosmo-abis. In order to do that,
we have replaced the following:
- DINP, DMI, DMIB and DMUX by their respective DL* correspondences.
- SS_GLOBAL by SS_L_GLOBAL
- SS_INPUT by SS_L_INPUT
- S_GLOBAL_SHUTDOWN by S_L_GLOBAL_SHUTDOWN
- SS_INPUT by SS_L_INPUT
- S_INP_* by S_L_INP_* sub-signals
- E1INP_NODE by L_E1INP_NODE vty node
This patch has been tested with:
- one nanoBTS
- the HSL femto with the examples available under libosmo-abis
- BS11 with both dahdi and misdn drivers.
The byte ordering is a bit odd: The least significant byte is ahead of
the most significant byte, different from everything else in GSM that
seems to be big-endian.
Thanks to Seungju Kim <admin@manateeshome.com> for repoerting the bug.
The MS Radio Access Capability IE can be _very_ long in some recent
high-end mobile phones, way beyond the old 14-byte limit. We increase
our array to 52 bytes, and make sure not to overflow that buffer.
Use the libosmocore code to ignore certain signals by
default (e.g. SIGHUP, SIGPIPE) and use the new code to
create a default stderr logging target and initialize
it properly.
libosmogsm is a new library that is distributed in the libosmocore.
Now, openbsc depends on it. This patch gets openbsc with this
change.
This patch also rewrites all include path to the new
osmocom/[gsm|core]
Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
This patch fixes:
CC gb_proxy_main.o
gb_proxy_main.c: In function ‘main’:
gb_proxy_main.c:224: warning: implicit declaration of function ‘logging_vty_add_cmds’
And a similar problem in osmo-bsc_nat.
This was introduced in by myself in patch:
"bsc: change bsc_vty_init to take logging categories as parameter"
Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
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.
Recent libosmocore introdues a way how log targets can be configured from
the VTY.
This commit makes the 'log filter (imsi|nsvc|bvc)' compatible with it.
When we copy a msgb, we need to make sure the msgb_cb->bssgp_cell_id
pointer points to data in the new message, not in the old message.
Thanks to Dieter Spaar for spotting this.
As we only have one NS-VC between gb_proxy and SGSN, we cannot
forward a NS-BLOCK from the BSS to the SGSN, as it would affect
all other BSS's, too.
Thus, we check if we have an unblocked PTP-BVC in the NSVC to the BSS,
and then issue a BVC-BLOCK towards the SGSN.
This should prevent any further PDU's from the SGSN to be sent to
this BSS.
In case we get a RA UPD REQ on a new cell (both served by the same
SGSN), the LLC stack should not allocate a ne LLE/LLME, as the latter
would reset the V(u)sent / V(u)recv to zero and make the MS discard
our responses.
Instead, whenever the LLC stack sees a foreign TLLI, it should always
convert it to the local TLLI before doing any lookup for a LLE/LLME.
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.
Harald Welte
Holger Hans Peter Freyther
Dieter Spaar