path: root/include/openbsc/gsm_subscriber.h
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authorNeels Hofmeyr <nhofmeyr@sysmocom.de>2017-05-08 15:12:20 +0200
committerNeels Hofmeyr <neels@hofmeyr.de>2017-08-27 17:40:53 +0200
commitce67be1910b19c01275f8f73a9806ac3e5d6f43d (patch)
treeea3446ce75a42814ee5d66b0ce2d4bd85e70ed70 /include/openbsc/gsm_subscriber.h
parentfa68ccde69b20afe471c0f2190d198e0f358434f (diff)
mscsplit: various preparations to separate MSC from BSC
Disable large parts of the code that depend on BSC presence. The code sections disabled by #if BEFORE_MSCSPLIT shall be modified or dropped in the course of adding the A-interface. Don't set msg->lchan nor msg->dst. Don't use lchan in libmsc. Decouple lac from bts. Prepare entry/exit point for MSC -> BSC and MSC -> RNC communication: Add msc_ifaces.[hc], a_iface.c, with a general msc_tx_dtap() to redirect to different interfaces depending on the actual subscriber connection. While iu_tx() is going to be functional fairly soon, the a_tx() is going to be just a dummy for some time (see comment). Add Iu specific fields in gsm_subscriber_connection: the UE connection pointer and an indicator for the Integrity Protection status on Iu (to be fully implemented in later commits). Add lac member to gsm_subscriber_connection, to allow decoupling from bts->location_area_code. The conn->lac will actually be set in iu.c in an upcoming commit ("add iucs.[hc]"). move to libcommon-cs: gsm48_extract_mi(), gsm48_paging_extract_mi(). libmsc: duplicate gsm0808 / gsm48 functions (towards BSC). In osmo-nitb, libmsc would directly call the functions on the BSC level, not always via the bsc_api. When separating libmsc from libbsc, some functions are missing from the linkage. Hence duplicate these functions to libmsc, add an msc_ prefix for clarity, also add a _tx to gsm0808_cipher_mode(): * add msc_gsm0808_tx_cipher_mode() (dummy/stub) * add msc_gsm48_tx_mm_serv_ack() * add msc_gsm48_tx_mm_serv_rej() Call these from libmsc instead of * gsm0808_cipher_mode() * gsm48_tx_mm_serv_ack() * gsm48_tx_mm_serv_rej() Also add a comment related to msc_gsm0808_tx_cipher_mode() in two places. Remove internal RTP streaming code; OsmoNITB supported that, but for OsmoMSC, this will be done with an external MGCP gateway. Remove LCHAN_MODIFY from internal MNCC state machine. Temporarily disable all paging to be able to link libmsc without libbsc. Skip the paging part of channel_test because the paging is now disabled. Employ fake paging shims in order for msc_vlr_tests to still work. msc_compl_l3(): publish in .h, tweak return value. Use new libmsc enum values for return val, to avoid dependency on libbsc headers. Make callable from other scopes: publish in osmo_msc.h and remove 'static' in osmo_msc.c add gsm_encr to subscr_conn move subscr_request to gsm_subscriber.h subscr_request_channel() -> subscr_request_conn() move to libmsc: osmo_stats_vty_add_cmds() gsm_04_08: remove apply_codec_restrictions() gsm0408_test: use NULL for root ctx move to libbsc: gsm_bts_neighbor() move to libbsc: lchan_next_meas_rep() move vty config for t3212 to network level (periodic lu) remove unneccessary linking from some tests remove handle_abisip_signal() abis_rsl.c: don't use libvlr from libbsc gsm_subscriber_connection: put the LAC here, so that it is available without accessing conn->bts. In bsc_api.c, place this lac in conn for the sake of transition: Iu and A will use this new field to pass the LAC around, but in a completely separate OsmoBSC this is not actually needed. It can be removed again from osmo-bsc.git when the time has come. Siemens MRPCI: completely drop sending the MRPCI messages for now, they shall be added in osmo-bsc once the A-Interface code has settled. See OS#2389. Related: OS#1845 OS#2257 OS#2389 Change-Id: Id3705236350d5f69e447046b0a764bbabc3d493c
Diffstat (limited to 'include/openbsc/gsm_subscriber.h')
1 files changed, 22 insertions, 6 deletions
diff --git a/include/openbsc/gsm_subscriber.h b/include/openbsc/gsm_subscriber.h
index c65b8a31..60eb0cd6 100644
--- a/include/openbsc/gsm_subscriber.h
+++ b/include/openbsc/gsm_subscriber.h
@@ -19,8 +19,6 @@
-struct subscr_request;
enum gsm_subscriber_field {
@@ -34,17 +32,35 @@ enum gsm_subscriber_update_reason {
-int subscr_update(struct vlr_subscr *vsub, struct gsm_bts *bts, int reason);
+ * Struct for pending channel requests. This is managed in the
+ * llist_head requests of each subscriber. The reference counting
+ * should work in such a way that a subscriber with a pending request
+ * remains in memory.
+ */
+struct subscr_request {
+ struct llist_head entry;
+ /* the callback data */
+ gsm_cbfn *cbfn;
+ void *param;
+int subscr_update(struct vlr_subscr *vsub, int reason);
* Paging handling with authentication
-struct subscr_request *subscr_request_channel(struct vlr_subscr *vsub,
- int channel_type,
- gsm_cbfn *cbfn, void *param);
+struct subscr_request *subscr_request_conn(struct vlr_subscr *vsub,
+ int channel_type,
+ gsm_cbfn *cbfn, void *param);
void subscr_remove_request(struct subscr_request *req);
int subscr_paging_dispatch(unsigned int hooknum, unsigned int event,
struct msgb *msg, void *data, void *param);
+int msc_fake_paging_request(struct vlr_subscr *vsub);
+void msc_fake_paging_request_stop(struct vlr_subscr *vsub);
#endif /* _GSM_SUBSCR_H */