Not really, if I have a temporary subscriber coming onto the network, I
would like to be able just to use their IMEI instead of going through the
trouble of getting their IMSI.
T
hats a shame. Reading http://openbsc.osmocom.org/trac/wiki/osmo-nitb
it states;
"
We obtain the IMSI and IMEI of every LOCATION UPDATING REQUEST, and then if
neccessary create a new entry for the equipment as well as the subscribers
in the respective tables.
"
Is there a specific table that all rejected handsets go into or a mixture
of Equipment, EquipmentWatch, Meta and Subcriber?
Many thanks,
Is there a way to add subscribers by just using their IMEI, this is a lot
easier to obtain the the IMSI.
I can see there is and Equipment and EquipmentWatch table in hlr.sqlite in
the Osmo-NITB folder, but there is no Authorised field like in the
Subscribers table.
Many thanks,
Hi Holger,
I was able to narrow it down, and it seems this is the patch that
causing the problem:
http://cgit.osmocom.org/libosmocore/commit/?id=f5a079f739c57d8be7c59149fd45…
Up to that patch it works (more or less), but after I applied it, I
got this seg faults.
I don't know how to do back traces but I try to get some info about
this topic and will send the results.
Csaba
Hello,
I am wonder how to add support for other Transceivers, in particular the
BladeRF ( http://nuand.com/ ). If anyone has a start point for me to learn
how to do this, it would be fantastic!
Many thanks
On Tue, Jul 02, 2013 at 11:51:49PM -0700, Caleb Pal wrote:
> Holger,
Hi,
I have a reliable re-producer of the issue. It happens when the PCU is
dead and we still receive segmented data from the GGSN. The re-producer
is inside a branch of mine of the OsmoPCU code[1]. The commit message
has some information about how to re-produce (what is missing is the
ACL config of the SGSN to allow this test).
Maybe you want to try to fix the issue based on this setup?
kind regards
holger
[1] http://git.osmocom.org/osmo-pcu/commit/?h=zecke/features/emulator&id=a727a2…
the gprs_llc_tx_ui() will call down to BSSGP/NS, which in turn will
call msgb_free() themselves in their error path, so the msgb is
already freed at that time.
As discussed on the mailing list quite some time ago, msgb ownership
policy/rules and implementation need to be more clearly defined, and
this definition adopted in the implementation.
Thanks to Holger for reproducing this.
---
openbsc/src/gprs/gprs_sndcp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/openbsc/src/gprs/gprs_sndcp.c b/openbsc/src/gprs/gprs_sndcp.c
index 853f8db..6564ffb 100644
--- a/openbsc/src/gprs/gprs_sndcp.c
+++ b/openbsc/src/gprs/gprs_sndcp.c
@@ -420,7 +420,8 @@ static int sndcp_send_ud_frag(struct sndcp_frag_state *fs)
rc = gprs_llc_tx_ui(fmsg, lle->sapi, 0, fs->mmcontext);
if (rc < 0) {
/* abort in case of error, do not advance frag_nr / next_byte */
- msgb_free(fmsg);
+ /* do not msgb_free() here, as the lower layer is doing
+ * that if an actual transmission error occurs */
return rc;
}
--
1.8.3.2
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
hi Harald,
I'm running OpenBSC in BSC-only mode, where my A-interface gateway
substitutes an MSC (soft switch) to BSC. On the other side, A-interface
gateway has a legacy BSSAP/e1 connectivity.
OpenBSC configuration file is derived from
doc/examples/osmo-bsc/osmo-bsc.cfg
everything is fine with control over sccp/ip, but MGCP gateway port (2427)
is not binded to a public ip.
so, my questions are
- in which way media control is assumed to be performed?
- how this control is reflected in osmo-bsc.cfg
in fact, I'm expecting osmo-BSC to run exactly as the BSC from ip.access,
that establishes SCCP/ip link and accepts MGCP commands from a soft switch
Thank you,
Dmitri
If we don't do this, we will generate a bogus warning in
gprs_sgsn:sgsn_pdp_ctx_free() when we release a pctx which still has the
lib pointer set to non-NULL.
At the same point, we introduce an OSMO_ASSERT() to verify that the
pctx->lib really equals the pdp context which libgtp reported to us.
---
openbsc/src/gprs/sgsn_libgtp.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/openbsc/src/gprs/sgsn_libgtp.c b/openbsc/src/gprs/sgsn_libgtp.c
index f2eb35d..c244e2c 100644
--- a/openbsc/src/gprs/sgsn_libgtp.c
+++ b/openbsc/src/gprs/sgsn_libgtp.c
@@ -264,6 +264,10 @@ static int create_pdp_conf(struct pdp_t *pdp, void *cbp, int cause)
DEBUGP(DGPRS, "Received CREATE PDP CTX CONF, cause=%d(%s)\n",
cause, get_value_string(gtp_cause_strs, cause));
+ /* make sure that libgtp doesn't call us with inconsistent
+ * pointers */
+ OSMO_ASSERT(pctx->lib == pdp);
+
/* Check for cause value if it was really successful */
if (cause < 0) {
LOGP(DGPRS, LOGL_NOTICE, "Create PDP ctx req timed out\n");
@@ -292,8 +296,13 @@ static int create_pdp_conf(struct pdp_t *pdp, void *cbp, int cause)
reject:
pctx->state = PDP_STATE_NONE;
- if (pdp)
+ if (pdp) {
pdp_freepdp(pdp);
+ /* unlink the now non-existing library handle from the
+ * pdp context */
+ pctx->lib = NULL;
+ }
+
/* Send PDP CTX ACT REJ to MS */
rc = gsm48_tx_gsm_act_pdp_rej(pctx->mm, pctx->ti, reject_cause,
0, NULL);
--
1.8.3.2
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
Dear LaF0rge,
I pushed "zecke/features/emulator" to the osmo-pcu repository. All it
does is to send a static GPRS Attach for a foreign TLLI. Looking at the
communication with Wireshark one will see:
Identity Requests messages.. always with N(U) = 0
and in the SGSN log one can see:
<0012> gprs_llc.c:773 LLC RX: unknown TLLI 0xadf11820, creating LLME on the fly
...
<0012> gprs_llc.c:357 LLC TX: unknown TLLI 0xedf11820, creating LLME on the fly
What happens is the following:
When receiving the GPRS Attach we create a LLME for the 'foreign' TLLI,
but the look-up will never compare tlli/old_tlli with the foreign one. It
will always be localized.
The smallest change is this one:
diff --git a/openbsc/src/gprs/gprs_llc.c b/openbsc/src/gprs/gprs_llc.c
index 8af5367..52727ce 100644
--- a/openbsc/src/gprs/gprs_llc.c
+++ b/openbsc/src/gprs/gprs_llc.c
@@ -777,9 +777,10 @@ int gprs_llc_rcvmsg(struct msgb *msg, struct tlv_parsed *tv)
(llhp.cmd == GPRS_LLC_XID || llhp.cmd == GPRS_LLC_UI)) {
struct gprs_llc_llme *llme;
/* FIXME: don't use the TLLI but the 0xFFFF unassigned? */
- llme = llme_alloc(msgb_tlli(msg));
+ llme = llme_alloc(tlli_foreign2local(msgb_tlli(msg)));
LOGP(DLLC, LOGL_DEBUG, "LLC RX: unknown TLLI 0x%08x, "
- "creating LLME on the fly\n", msgb_tlli(msg));
+ "creating LLME on the fly\n",
+ tlli_foreign2local(msgb_tlli(msg)));
lle = &llme->lle[llhp.sapi];
} else {
LOGP(DLLC, LOGL_NOTICE,
(but one could move that into llme_alloc and then it works for RX/TX). After
this patch the Identity Request requests will have an increasting N(U) and the
tlli in the message will be 0xadf11820. The SGSN will still print:
<0012> gprs_llc.c:142 TLLI 0xadf11820 is foreign, converting to local TLLI 0xedf11820
So this means that for the entire GPRS attach procedure we will use the
initial foreign TLLI.... so somehow... the code in the MM handling...
/* Even if there is no P-TMSI allocated, the MS will switch from
* foreign TLLI to local TLLI */
ctx->tlli_new = gprs_tmsi2tlli(ctx->p_tmsi, TLLI_LOCAL);
/* Inform LLC layer about new TLLI but keep old active */
gprs_llgmm_assign(ctx->llme, ctx->tlli, ctx->tlli_new,
GPRS_ALGO_GEA0, NULL);
So this tlli_new does not appear to be used at all and I don't see how/where
we would use/create the OLD_TLLI IE? Is it implemented?
holger
