Since osmo-ggsn.git c94837c6a401bf0f80791b619a9b4cfbe9160afd, those
APIs are a no-op since timers are tracked internally through osmocom
APIs (and at the same time, new implementation fixes some timing related
bugs).
As a result, osmo-sgsn depends now on at least that libgtp commit. Since
it's not yet avaiable on latest libgtp release, let's track it down in
TODO-RELESE to not forget to update libgtp requirements during osmo-sgsn
release.
Related: OS#4178
Change-Id: Ia9a93d4a6ed63cd0c736f9a99d81d730b958d82e
When the MS is in MM_STANDBY, the Routing Area is known,
but not the exact cell.
Start the paging procedure. (Even this is only supported
for the last known cell, not the Routing Area. Routing Area
paging is not yet supported.)
Change-Id: Icc2c6ba70f8f74054546a1e31741fc90b232a23c
GCC warns us that 'pmm_state_fsm_timer_cb' is defined but not used.
This function was introduced in [1], but was not assigned to the FSM.
[1] I66c2ac0350cb074aefd9a22c5121acf723f239d3
Change-Id: Ib040befc87b2676aad2b8fe3671404fb3f5b030b
When the SGSN releases a RANAP connection, it sends a Release Command
and waits for a Release Complete. Use X1001 to release the Iu connection
when the Release Complete is lost/never received.
Change-Id: I39a0169c22a4ac430b3d6f3c281d1f381eaa4756
When moving between RANs we need them at a later point.
Allocate them always to not make the code (more) complex.
Change-Id: I1724790335b0820f153a0cbdb5cfd1cfea36d1e9
After processing the event, set the return code to success.
Thanks to manatails (redmine).
Change-Id: I73b3b3c3dd330bc953835737758854cf68539495
Fixes: #3969
In IDLE there is not further context with the MS. Prevents the Timer from sending
packages to a MS which can not respond
Change-Id: Ibdd913173af11d0e6d04aa392e047d5d9aee1243
The user inactivity timer is similiar to the Gb READY timer and reduces
the resources taken by an idle UE.
Change-Id: I66c2ac0350cb074aefd9a22c5121acf723f239d3
PMM Connected defines a Iu signaling connection. The 2 other
PMM states do not have an active Iu signaling connection.
Change-Id: Ie05d2bdf8dfb593b4c7e837107a3a06f22e90119
When receiving a PDU, the GMM fsm will change to state MM_READY
and will re-arm the T3314
Relates: OS#1941
Change-Id: I78f40762fb17bbd4a6f35608a793f8e5271e9b86
It's going to be useful to track new dependency APIs being used which
require dependency version release and version bump during release of
osmo-sgsn.
Change-Id: Ia495a8577001c6a223c31f4ddd7eee289e3523c7
After Security Mode Complete, the sender has been authenticated.
Send a CommonId to enable paging coordination between CS and PS.
Change-Id: If195c26e87ba3054e159746671babf93a12e7013
It could happen that SGSN drops GTP side of a pdp ctx (pdp->lib=NULL)
while still maintaing the other side (to notify about the entire pdp ctx
being torn down). If a PdpActReq arrives during that time, we need to
account for that situation, otherwise osmo-sgsn crashes accessing
pdp->lib.
If no pdp->lib is found at that time, let's reject the request and
expect at some point later in time the entire pdp context will be
destroyed and reestablished.
Related: OS#4173
Change-Id: I6dd87557ebb26fdbd280504abde10d976acecf64
State machine inspired in the one from TS 24.008 4.1.3.3.1. Some state
transitions are inroduced in the code but are still commented out since
we lack some functionalitites or improvements in the code to handle
different scenarios.
Most of the logic is still outside of the FSM, but at least now the
states are handled in a sane way triggered by events.
Change-Id: Idecb43c10d66224d4f9ba9320825040ce6cf9a07
Build files shared by osmo-sgsn, osmo-gbpy and osmo-gtphub into a .la
library, so we can later split each application into its own subdir and
clearly identify what's used by who.
Due to a dependency error with .Po files, I cannot depend on the specific
.o files directly in LDADD for each binary, but it works fine on follow up
commits when binaries are splitted into different makefiles, so it will be
done later.
Change-Id: Ib7665c530c086a5f3135c395bb8bf19ed4a882b6
Implement TS 23.060 6.1.2 Mobility Management States (Iu mode) using
osmocom FSM and drop old implementation.
Most of the logic on each state is still kept in gprs_gmm.c, will be
inserted into the FSM later.
Change-Id: I4c9cf8c27194817c56e8949af0205e1cc14af317
Implement TS 23.060 6.1.1 Mobility Management States (A/Gb mode) using
osmocom FSM and drop old implementation.
Most of the logic on each state is still kept in gprs_gmm.c, will be
inserted into the FSM later.
Change-Id: I04004423e993107374d5a3549b8a93ac169251dd
INET(6)_ADDRSTRLEN already contains the required extra null byte at the
end, no need to add +1 to it.
Change-Id: I5a16659e007c6883fe21582cce5dac544e6d4bb9
inet_ntop manual states:
"inet_ntoa(3) is now considered to be deprecated in favor of
inet_ntop()".
Change-Id: I0c708d047122f349acf46797a9e5973040e7ae04
This way it's easier to add new common functionalitites without
forgetting to add it on both sides, and simplifies the code.
Change-Id: Ib6c0427ac7b35295cf1caf2f28cb2a5c155b9d9c
Those two state sets are not part of the same state machine, and are
used in different scenarios, so let's split them and handle them in Gb
and Iu specific parts of struct sgsn_mm_ctx. This is required in order
to improve related code (for instance, use osmocom fsm).
Change-Id: I6100d607da316da0595886c6968704dd9ccfbde9
Now that we have RANAP/Iu handling specificities in its own file, let's
have also Gb specific glue code for messages coming from llc up to MM/SM
layer in its own file. This way same entry points in gprs_gmm.c are used
by Gb and Iu: gsm0408_rcv_gmm() (for MM) and gsm0408_rcv_gsm() (for SM).
Change-Id: Iaf57922a0970c1d03f6f1d6337d27ae3d4aaf32c
RANAP related functionalities were splitted among several files
(gprs_gmm.c, gprs_sgsn.c and sgsn_libgtp.c). Let's move it into its own
file to shrink complexity/size of existing files.
It also allows to keep a lot of conditionally enabled code (BUILD_IU)
and its dependencies (osmo-iuh) together.
Change-Id: I549042aaff045a378de77d657cc396ee08f22f33
There's no real need to use -1 to indicate echo timer as disabled, since
0 can also be used (it doesn't make sense to have a timer timeout of 0).
This way code is simplified.
Change-Id: I689034887188a53590eddeffda781629694eb5ed
Pau Espin
Alexander Couzens