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2016-11-12mgcp parsing, mgcp testNeels Hofmeyr2-23/+39
Change-Id: Ibe2ab17b3fa3a506a2e841ba979ea4175e3a21e8
2016-11-12mgcp: handle responses from the MGCP GWNeels Hofmeyr2-11/+50
Change-Id: I5c0493feaec775461b5a017c36b93cc2ad63c896
2016-11-12IuCS and IuPS: add VTY config for RAB Assignment address kindNeels Hofmeyr3-1/+14
To accomodate the ip.access nano3G without having to recompile, make the RAB Assignment's Transport Layer Address IE's format configurable, in both osmo-cscn and osmo-sgsn. The long term perspective is to somehow detect which address encoding a given 3G cell prefers, but for the time being just configure it globally and set each ue_conn_ctx to the global setting upon creation. Add VTY command to iu_vty.c, with args passed to iu_vty_init() to insert at an arbitrary VTY node, so that it can be used both for osmo-cscn and osmo-sgsn. Add generic iu_vty_config_write() to write out the config. Call iu_vty_init() from cscn_vty_init(); cscn_vty_init() is in libmsc, hence linking of osmo-cscn now needs libiu to come after libmsc, so move that further down. Change-Id: I93728314742b327336f3fb6de98e6457f687e1f9
2016-11-12IuCS, IuPS: move flag to use X.213 NSAP addr into ue_conn_ctxNeels Hofmeyr4-1/+9
The future perspective is to remember the preferred RAB Transport Layer Address encoding for each 3G cell that is connected, so store per UE conn instead of globally hardcoding. Add rab_assign_addr_enc member to ue_conn_ctx. Thus the iu_rab_act_cs() and iu_rab_act_ps() functions no longer need the explicit use_x213_nsap argument. Add include/openbsc/common.h in order to define the enum nsap_addr_enc, in a separate file to be able to easily include it in all of libmsc, libiu and gprs/* without creating include cycles. Set the rab_assign_addr_enc when an MM ctx is created for iu, and whenever the ue_conn_ctx for an Iu MM ctx is updated. This looks a bit clumsy so far, the hope is that there will be a nice way to setup the ue_conn_ctx prior to that. Change-Id: I49bb5736df7bdfdd55d3e7b74ee559595cfd2f7d
2016-11-12sgsn init: pass sgsn_config pointer to sgsn_vty_init(), not sgsn_parse_configNeels Hofmeyr1-2/+2
It makes sense semantically, and prepares for an upcoming commit that uses the internal global config pointer in sgsn_vty_init(), which would not be defined yet without this. Change-Id: Ie4cf1c0a1c9e6330a134ff4b7b2e6d5699c12bd7
2016-11-12iu: sort out confusion around asn_debug and asn1_xer_printNeels Hofmeyr1-1/+5
Before, I confused asn_debug with asn1_xer_print. Have two distinct VTY commands and fix documentation. Put the asn_debug and asn1_xer_print implementations in iu.c. Since they are globally defined, don't pass a pointer to iu_vty_init() but just use it directly. Might be considered less clean, but is also less bloat. Change-Id: Iccbadfe1585ba224f74cdfb5273b5ce29b6d78f0
2016-11-12iu.h: add missing includes and type defsNeels Hofmeyr1-1/+6
So far it was included only in files that also include all needed headers, but make it so that it can be included on its own. Change-Id: I08a756031b995bd01a6e15c678b845fd98de960b
2016-11-12IuCS: rapidly release connectionsNeels Hofmeyr1-0/+2
Do the same as we do in 2G: release the connection as soon as nothing else is pending for a given subscriber. Before, osmo-cscn would wait for the UE "to get bored" and send an Iu release. But the CN should stay lean on connections. Also, 25.413[1] in section 7, 6th point states: "While the Iu release is managed from the CN, the RNC has the capability to request the release of all Iu connection resources from the corresponding Iu connection." So far we did not manage Iu release from osmo-cscn at all. Use the same mechanism we use in 2G: from msc_release_connection(), just before freeing the gsm_subscriber_conn, invoke a CN initiated Iu Release command to the UE. This works around OS#1816 ("USSD only works when IuCS is released", on nano3G), because the Iu conn is now released right after every signalling, so that typically no two requests will use the same conn. In iu.h/iu.c, add iu_tx_release(), absorbing almost all of the code from ranap_handle_co_iu_rel_req(). Add stub to db_test.c, necessary to build it without linking libiu. [1] 3GPP TS 25.413 v12.4.0 Release 12 / ETSI TS 125 413 V12.4.0 (2015-04) Related: OS#1816 Change-Id: Ic12bd6f3666f6fd42bd6d9fdae1c93abee3b6786
2016-11-12IuCS: store assigned rab_id in gsm_subscriber_connectionNeels Hofmeyr1-0/+1
Change-Id: I7fda4304631fc24bbd1bebe911b8403a942fcf53
2016-11-12bridge calls via mgcpgwNeels Hofmeyr1-0/+1
Change-Id: Ie259e30bc532fe9817c96562022ac33443d5747a
2016-11-12IuCS: implement msc_call_assignment() for IuCSNeels Hofmeyr1-0/+3
Send IuCS RAB Activation upon MNCC_CALL_PROC_REQ. Implement function msc_call_assignment(): decide between sending A-iface BSSMAP Assignment Request or IuCS RAB Assignment Request. Implement iu_rab_act_cs() to send the IuCS RAB Assignment Request. The IP address and port of the MGCPGW sent in the RAB Assignment are still hardcoded. The A-interface extension is not implemented yet. Declare ranap_new_msg_rab_assign_voice() to avoid including ranap_msg_factory.h, which would require adding ASN1 CFLAGS to Makefile.am. The mgcpgw_client as well as some more osmo-iuh functions are now linked from libmsc, hence add some dummy stubs to libiudummy and db_test.c. Change-Id: Iaae51d1fbbfc28fad1c0b85e161d53d80a420a19
2016-11-12cscn: add mgcpgw client (with dummy read cb so far)Neels Hofmeyr1-0/+6
Store the mgcpgw client data in struct gsm_network. Initialize VTY and bind the client. Change-Id: Ifc4efb1ca44fa34c29bf23b35addb54155296d68
2016-11-12libmgcp: add mgcpgw client APINeels Hofmeyr2-0/+48
Add an API to send MGCP messages to an MGCP GW, from the perspective of an MSC instructing the GW to setup RTP streams. Rationale: the mgcp_protocol.h is mostly for the MGCP GW itself, other implementations forward incoming MGCP messages. So a simpler approach for an MGCP GW client is useful. Add general VTY commands that can be used to configure mgcpgw_client. osmo-cscn is going to use this to route RTP streams (for 3G at first). Change-Id: I6fe365c4c89207f2172943cc456b508a207b1135
2016-11-12libmgcp: add value strings for mgcp_connection_modeNeels Hofmeyr1-0/+7
Add file mgcp_common.c to implement the value strings for the mgcp_connection_mode. Add in a separate file because of the upcoming mgcpgw_client.c implementation, introducing a file that contains implementations commonly used in MGCP GW as well as its clients. Change-Id: I6fe365c4c89207f2172943cc456b508a207b1135
2016-11-12libmgcp: move mgcp_connection_mode to public headerNeels Hofmeyr2-8/+8
mgcp_connection_mode will be used by the upcoming mgcpgw_client.h API. Change-Id: I7a3f8905723320d968f1a53c1036904107b4fb2d
2016-11-12IuCS: cosmetic prep for msc_call_assignment()Neels Hofmeyr1-0/+1
Rename gsm48_cc_tx_call_proc() to gsm48_cc_tx_call_proc_and_assign() to mark the place where the A-interface will send a BSSAP Assignment Request / where the IuCS-interface will send a RAB Assignment Request. Add function msc_call_assignment() to decide between A-iface and IuCS assignment, to be implemented in subsequent commit. Change-Id: I0695e233d57d13658793b0e63bb7c3ff224909a0
2016-11-12IuCS: send RANAP CommonIDNeels Hofmeyr2-0/+3
Add libiu function to send a CommonID message down a UE connection, iu_tx_common_id(); add also a corresponding stub to libiudummy for linking with tests. Add libmsc function msc_tx_common_id() to call the above. Add this mostly to clearly indicate in msc_ifaces.h that libmsc is calling out of the MSC; also to do conn->via_iface checking. Call msc_tx_common_id() after ciphering is established, in _gsm48_rx_mm_serv_req_sec_cb()'s GSM_SECURITY_SUCCEEDED case. Change-Id: I576ddd5bbabfc989149debd2f8a9743db6d26043
2016-11-12LU counters: count completion and failure, not messages sentNeels Hofmeyr1-4/+4
From a human admin viewpoint it doesn't make sense to count the messages sent: When we use TMSIs, we first send a LU Accept with a new TMSI, and then expect the MS to respond with a TMSI Realloc Complete message. When that fails to come through, the LU actually ends in failure, even though a LU Accept was sent. In 3G, if a UE sends an Iu Release during LU (e.g. user enables flight mode), we cancel the LU without sending any reply at all, so nothing would be counted. Instead, count Location Updating results, i.e. completion and failures.
2016-11-12comment on mscsplit, indent commentNeels Hofmeyr2-0/+8
2016-11-12move to libbsc: lchan_next_meas_rep() -- TODO really?Neels Hofmeyr1-1/+0
Change-Id: I4ea799c5fa61f81c404e6ef1b9ac86a8faa1fb49
2016-11-12move to libbsc: gsm_bts_neighbor() -- TODO really?Neels Hofmeyr1-4/+0
Change-Id: I63d4835dc7aabdf176e0ca634a6a4ca527612693
2016-11-12complete IuCS paging implementationNeels Hofmeyr1-0/+1
Add paging timeout to struct gsm_subscriber. Previously, paging timeout was implemented only on BSC level, where each request has its own timeout value. The MSC will still send individual requests to BSC or RNC level, where they timeout individually. However, the MSC must also have an own timeout to be sure to discard stale pagings that the BSC or RNC never replied for. Add handle_paging_resp(), copying the few libmsc relevant parts of gsm48_handle_paging_resp().
2016-11-12paging: change subscr_paging_cb() into subscr_rx_paging_response()Neels Hofmeyr1-0/+2
Remove one layer of callback indirection in paging. When a paging response arrives, we always want to first secure the connection, thus a fixed subscr_rx_paging_response() function is more appropriate and avoids having to store a cbfn. The actual actions to be taken upon successful paging are of course still in callback functions stored with each subscriber. Remove paging_request_stop() call from subscr_paging_dispatch(), which stops paging on all BTSs, which is not the responsibility of libmsc. Change-Id: Ic2c785c9cc48b2c2c6557cbe1060d25afa89e38d
2016-11-12move subscr auth check to gsm_subscriber.cNeels Hofmeyr1-0/+3
add subscr_authorized(), subscr_authorized_imsi() Change-Id: If2ef06b1229351127c61477ca14653d6ae4cb6bb
2016-11-12subscr_request_channel() -> subscr_request_conn()Neels Hofmeyr1-2/+2
Change-Id: Ife8e10b240693a8d369139881774f1892044aa65
2016-11-12move subscr_request to gsm_subscriber.hNeels Hofmeyr1-0/+14
Change-Id: Idbbd39b0e068da17aafa97e315143509c69c50ea
2016-11-12add gsm_encr to subscr_connNeels Hofmeyr1-0/+1
Change-Id: Id5797cd1f1bfa2cca2d3fbabc1981aa75546421b
2016-11-12libmsc: duplicate gsm0808 / gsm48 functions (towards BSC)Neels Hofmeyr1-0/+8
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 relatd to msc_gsm0808_tx_cipher_mode() in two places. Change-Id: I5b276853d3af71f5e3f0a031fd17b4fff0580020
2016-11-12msc_compl_l3(): publish in .h, tweak return valueNeels Hofmeyr1-0/+8
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 Change-Id: If24007445899e9c75553a0dbf843ada3566b3380
2016-11-12add cscn vty, remove nitb vtyNeels Hofmeyr1-0/+3
Change-Id: I8f8980d6cfbf26f1b0e0197939833e55dbe521fb
2016-11-12add iucs.[hc]Neels Hofmeyr2-0/+8
Change-Id: I88e981f4c31393a98ae8d61176c65c9251a6f28b
2016-11-12add DIUCS debug log constantNeels Hofmeyr1-0/+1
Change-Id: Id347a3024fa495a1ab680db7320648d933a4018b
2016-11-12gsm_04_08, gsm_subscriber: decouple lac from btsNeels Hofmeyr1-1/+1
The idea is to not have a direct pointer to a bts struct (into BSC land), but a LAC to resolve the BSC or RNC depending on the appropriate A or IuCS interface. subscr_update(): remove bts arg, add lac arg. Pass conn->lac to gsm48_generate_lai() instead of bts->location_area_code. Change-Id: I9f2b298a785bf4b2a1b3fcdd91b8256106b2d9de
2016-11-12subscr_update_expire_lu(): remove bts argNeels Hofmeyr1-1/+1
Change-Id: I26cafd9389aac65e53dc4280a1687c6b8bce3106
2016-11-12move t3212 to network level (periodic lu)Neels Hofmeyr1-0/+3
Set the T3212 default value in struct gsm_network and take that value when creating a BTS. Adjust VTY accordingly. Change-Id: Ifb730f9d0106fe195adc30459a39290a07313b50
2016-11-12Prepare entry/exit point for MSC -> BSC and MSC -> RNC communication.Neels Hofmeyr3-0/+63
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 via_iface marker to gsm_subscriber_connection with enum values IFACE_A and IFACE_IU so far. Add Iu specific fields in a sub-struct: 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]"). Change-Id: Idf8020a30562426e8f939706bf5c2188d5a09798
2016-11-12gsm_subscriber_connection: mark BSC specific itemsNeels Hofmeyr1-6/+6
The struct shall be split in two later. Change-Id: Ib9666225fb9bfec2cf1e364343560571869fe6a7
2016-11-12split subscr_con_allocate()/_free() in bsc_ and msc_Neels Hofmeyr1-2/+5
Rename current subscr_con_allocate() and subscr_con_free to bsc_*, and add two separate msc_subscr_con_allocate() and _free(). The msc_subscr_con_free() ignores all lchan members. In libbsc use bsc_*, in libmsc use msc_*. Change-Id: I3cf7c7cafdf4672ec7b26058bba8a77159855257 Future: there will be distinct subscr conns for libbsc and libmsc.
2016-11-12Move timezone settings up to network levelNeels Hofmeyr2-8/+14
Time zone used to be configurable per-BTS. In the upcoming MSC-split, no BTS structures will be available on the MSC level. To simplify, drop the ability to manage several time zones in a core network and place the time zone config on the network VTY level, i.e. in gsm_network. If we are going to re-add fine grained time zone settings, it should probably be tied to the LAC. Adjust time zone VTY config code (to be moved to libxsc in subsequent commit). Adjust time zone Ctrl Interface code. Change-Id: I69848887d92990f3d6f969be80f6ef91f6bdbbe8
2016-11-12move to libxsc: network VTY that isn't BSC-specificNeels Hofmeyr1-1/+2
Keep only BSC specific bits of the 'network' VTY node in bsc_vty.c, move more general VTY commands to xsc_vty.c. Add arg to xsc_vty_init() to pass a config_write_net() function. Pass a libbsc specific config_write_net() function. Future: upcoming omso-cscn will re-use the VTY bits moved to libxsc and pass a different config_write_net() function. Change-Id: I871b7b32a0c56fdce983e409cf244ec487d24e71
2016-11-12move to libxsc: global vty gsm_network pointerNeels Hofmeyr1-0/+5
Move gsmnet_from_vty() and the bsc_gsmnet global to xsc_vty.c. Rename bsc_gsmnet to vty_global_gsm_network and make it static to xsc_vty.c, to clearly mark the global variable for VTY use only. Introduce xsc_vty_init() to set vty_global_gsm_network. Change-Id: I26c5c47de08f899b896813d09612d5cb2f8e42d6
2016-11-12split bsc_bootstrap_network() in alloc and configNeels Hofmeyr1-1/+2
For patch clarity, keep some code dup to be removed in a subsequent patch. In the same sense don't change the fact that mncc_sock_init()'s return value is ignored. The global gsm_network instance 'bsc_gsmnet' is basically only used by the VTY, and a future patch will "hide" that global in a vty .c file. In a nutshell, I want to - first allocate a gsm_network, - then initialize the VTY passing the gsm_network pointer, - and then read the config file using the initialized VTY. So far, bsc_bootstrap_network() allocates the gsm_network and reads the config file right away, which only works by sharing the extern bsc_gsmnet pointer, which I would like to uncouple. Change-Id: I480a09a31a79766ad07b627dd5238b7e37f3be7a
2016-11-12sms_next_rp_msg_ref(): use direct pointer to next_rp_ref counterNeels Hofmeyr1-1/+1
libbsc and libmsc will have separate subscriber connection structs. Hence don't rely on gsm_subscriber_connection, but work on a direct pointer to the counter for the next RP reference. The only very thin function in gsm_04_11_helper.c thus becomes obsolete: drop the entire file. Change-Id: I2a2e9ba6a981a385d1f8f07acbe03536ffed0072
2016-11-12factor out & introduce struct gsm_encr, in xsc.hNeels Hofmeyr2-6/+11
Factor out encryption info from struct gsm_lchan as struct gsm_encr, placed in xsc.h. Change-Id: I94015fb9dd511c37c1e3058a0963c780b3f700ac Future: this will be used by libmsc's subscriber connection, for osmo-cscn.
2016-11-12move to libxsc: factor out gen of USSD notify and release completeNeels Hofmeyr1-2/+10
Both libmsc and libbsc will need distinct gsm0480_send_ussdNotify() and gsm0480_send_releaseComplete() functions, since there will be distinct subscriber connection structs. The current functions live in libmsc, so add the same in libbsc in new file gsm_04_80_utils.c. To avoid too much code dup, move the message generation part of gsm0480_send_ussdNotify() and gsm0480_send_releaseComplete() to new functions gsm0480_gen_ussdNotify() and gsm0480_gen_releaseComplete(), placed in libxsc. Change-Id: I33a84e3c28576ced91d2ea24103123431f551173
2016-11-12move to libxsc: net init 3: actual moveNeels Hofmeyr1-0/+7
Reincarnate gsm_network_init() as the parts not specific to libbsc. Move from bsc_network_init() those bits that are not BSC specific (and useful for upcoming osmo-cscn). Add libxsc to all linkages that use gsm_network_init(). Note: the only requirement to allow linking gsm_network_init() without libbsc is to keep the call to gsm_net_update_ctype() out of libxsc. The other items are kept out of libxsc because it makes sense semantically. But the separation is not strong in that the BSC specific data members are of course still omnipresent in struct gsm_network. If bsc_network_init() is not called, these are not initialized properly -- for now no users of uninitialized members exist. So this is just a first step towards a sensible split of the BSC and MSC gsm_network structs. The long term aim should be to have entirely separate structs with some common general items. Change-Id: If06316b97002390dc9a434686750cb96193ea63b
2016-11-12move to libxsc: net init 2: move bsc_network_init decl to osmo_bsc.hNeels Hofmeyr2-5/+5
bsc_network_init() is more fit to live in a BSC specific header. Change-Id: I9edfb1e748bb1cb484fadd48b0406f5b3098e89b
2016-11-12move to libxsc: net init 1: rename to bsc_network_initNeels Hofmeyr1-1/+1
The gsm_network_init() function initializes a whole lot of BSC specific stuff. Aiming to move some of it to libxsc, first rename it to bsc_network_init(). This will retain the BSC specific stuff when the move is done. Adjust all callers. Future: osmo-cscn will call the more generic part and not the BSC specific part. Change-Id: I4816ae19374390fc5c64972f7cad2e9ec3d8bcc3
2016-11-12define mncc_recv_cb_t to avoid code dupNeels Hofmeyr3-4/+11
Put mncc_recv_cb_t in xsc.h to avoid header include complications: if placing right above struct gsm_network, one must include gsm_data.h to use mncc_recv_cb_t as function parameter in a header, which will include gsm_data_shared.h, which will include xsc.h (future knowledge). Since I will need to use mncc_recv_cb_t in xsc.h, including gsm_data.h from there would introduce an #include loop. Avoid that and define mncc_recv_cb_t in xsc.h to begin with. Change-Id: I2e64cffa563750ce9f3172ffba6f9cf5b9280e9c
2016-11-12Add empty libxscNeels Hofmeyr2-0/+2
This will gradually soak up code shared by libbsc and libmsc. Change-Id: If34e2bd38a099d0799238337468d56e0305ab8ae
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