This allows the SGSN always having feedback on the resolution of the
release, hence being able to stay in PMM CONNECTED state until the
resolution is received, then moving to PMM IDLE.
Related: SYS#5389
Change-Id: Iac822c74e56750dc40e94573eae0e20853ff68c0
Allow to free UE ctx when receiving a Iu Release Complete.
In preparation of ranap_iu_tx_release_free() it requires
a field to free the Iu ctx on it's own without depending
on the upstream user.
Change-Id: Iac41cd3cce3232d01b2f7ede0cc46226c2cfb6c0
ranap_iu_tx_release_free is a fire and forget function to release
gracefully if possible. It first sends a Iu Release Command. After
a certain timeout the connection will be released.
Change-Id: I349e2c61ba0131e233b7ab927dfced0bd461dd8f
The iu_client is informing the library user about global event.
In prepration to the tx_iu_release_free() call allow to
disable upstream notificatiosn
Change-Id: Ic93ef6fd54c995405e9c37a5e0c53f81a89850b7
To help split openbsc.git to separate MSC and SGSN repositories, place the
common Iu interface related code here in libosmo-ranap. Also apply various
improvements while moving (from intermittent code review).
The code depends on libosmo-ranap tightly. One reason to want this separate
from libosmo-ranap could be that it uses libosmo-sigtran, accepting an sccp
instance. However, including in libosmo-ranap is the simplest way to go. The
osmo-iuh build depends on libosmo-sigtran anyway because of OsmoHNBGW, and all
current users of libosmo-ranap also naturally link libosmo-sigtran already.
Apply prefix ranap_iu_ and RANAP_IU_ to allow smooth transition from the
openbsc.git iu_ to the libranap ranap_iu_ implementations.
Prune unneeded #include statements.
Instead of sccp_addr, store an rnc pointer in the ue_conn_ctx. To facilitate,
also:
- Move iu_rnc struct to iu_client.h (as ranap_iu_rnc).
- Instead of sccp_addr, pass rnc to ue_conn_ctx_alloc().
- Pass a local struct new_ue_conn_ctx containing the sccp_addr and conn_id up
the RANAP handling stack in case of an InitialUE message.
- Separate the InitialUE message handling from cn_ranap_handle_co(), by moving
to new and separate cn_ranap_handle_co_initial(), so we can still pass a
looked-up ue_conn_ctx to all other cn_ranap_handle_co() code paths.
- Allocate the ue_conn_ctx only in ranap_handle_co_initial_ue(), not as early
as before.
Note that we are not actually ever using the rnc pointer now present in
ue_conn_ctx. It could be used for more concise paging, to first page only the
RNC where we last saw the subscriber. So far we page all matching LAC/RACs.
Tweak error logging: use __func__ instead of writing the function names as
string constants.
In iu_client_vty.c:
- Move the asn.1 debug commands from logging over to the iu node. They are not
specific to the logging target. They could qualify for an entirely separate
'asn1' root node, but for simplicity place under 'iu'.
- Add the 'asn1' commands to ranap_iu_vty_config_write(), so far missing.
- remove the legacy "net." from a VTY error message, it is not known which name
the parent node of 'iu' has.
Depends: libosmo-sccp I85b46269dbe7909e52873ace3f720f6292a4516c,
libosmo-sccp Ie1aedd7894acd69ddc887cd65a8a0df4b888838c
Change-Id: I6a3f7ad15be03fb94689b4af6ccfa828c25f45c0
Pau Espin
Alexander Couzens
Neels Hofmeyr