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2016-09-24SNDCP: add V.42bis data compression functionalityPhilipp1-0/+1
- Add compression control for V.42bis Add code to handle compression (gprs_sndcp_dcomp.c/h) - Add Adjustments in SNDCP - Add VTY commands Change-Id: I6d36cbdf2f5c5f83ca9ba57c70452f02b8582e7e
2016-09-24V.42bis: integration and unit testPhilipp1-0/+1
- Edit previously committed V.42bis implementation to function outside IAXmodem. - Add unit test to verify the correct function of V.42bis Change-Id: I689413f2541b6def0625ce6bd96f1f488f05f99d
2016-09-24SNDCP: add RFC1144 header compression functionalityPhilipp1-0/+2
- Add module to handle compression entities - Add module to control header compression - Introduce VTY commands for heade compression configuration - Add changes in sndcp and llc to integrate header compression Change-Id: Ia00260dc09978844c2865957b4d43000b78b5e43
2016-09-24RFC1144: integration and unit-testPhilipp1-0/+1
The previously pushed slhc implementation has been modified to compile and function outside of the kernel. Also debug log messages were added and datatypes ware matched. The implementation is now ready to be used Change-Id: I7a638e88a43b3eb9d006751a03ef2570e36613f0
2016-09-24SNDCP: add SNDCP-XID encoder/decoder and unit testPhilipp1-1/+4
The SNDCP-XID (or layer-3 xid) is used to exchange layer-3 parameters such as compression. The encoder encodes a bytestream that is then sent as regular XID field from LLC. We will need the SNDCP-XID to negotiate the parameters for our upcomming GPRS data and header compression features Change-Id: If2d63fe2550864cafef3156b1dc0629037c49c1e
2016-09-15Build fixesAlexander Huemer1-1/+2
Some fixes for build environments where dependencies are installed in distinct directories. Change-Id: I38808fd2911747b266ee6fde91187a88dd7ae355
2016-09-15Consistenly format variables in */Makefile.am filesAlexander Huemer1-11/+35
Change-Id: Ifa21513c007072314097b7bec188579972dc1694
2016-09-01IuPS: redirect Iu in various places, link Iu in sgsn-testDaniel Willmann1-0/+10
In gsm48_gmm_sendmsg(), redirect to iu_tx() for both cases of MM context present or not. In gsm48_rx_gmm_att_req(), compose an MM context marked as Iu for messages coming in from a ue_conn_ctx (passed in msg->dst). Also make sure cid is initialized to avoid introducing a compiler warning. In gsm48_rx_gmm_ra_upd_req(), look up an Iu MM context based on the presence of the ue_conn_ctx in msg->dst. In sgsn-test, add libiu and libasn1c, libosmo-sigtran, libosmo-ranap, which are now needed for an --enable-iu build. Change-Id: Ia47ffbfa6fa0f5a0cd76a379c57ef42faa0d80e3
2016-08-27Adding LLC-XID related modifications in LLCPhilipp1-0/+1
With this commit the already existing XID mechanism has been modified to suit the needs for the upcomming SNDCP-XID patches. This commit should not break anything since it does not alter the current behaviour (incoming XID is still just echoed, on GMM-Reset a basic XID message is still echoed) Change-Id: I65b9d625e72d3d61c99abdc7041773701d694d52
2016-07-16SGSN: use unique AUTH REQ referenceMax1-0/+1
The A&C reference number specified in 3GPP TS 24.008 ยง 10.5.5.19 identifies particular request sent by network with the related response sent by MS. The value transparently copied from request to response by MS: the spec do not specify what exactly should be in there so we use rand() to decrease chance for collisions. Note: variable named 'rand' clashes with standard function rand() so it was renamed. Change-Id: I3638821a9b4a0532b28dbbb50faa30c4082579f6 Related: OS#1582
2016-04-29Move osmo_gsup_messages.[ch] to libosmocoreHarald Welte1-1/+0
This requires the corresponding commit in libosmocore.
2016-04-29move gsm_04_08_gprs.h to libosmocoreHarald Welte1-1/+0
This requres the corresponding commit in libosmocore.
2015-11-02gsup/oap: add OAP to GSUP client.Neels Hofmeyr1-0/+2
Trigger an OAP registration upon IPA connect. Feed incoming OAP messages to oap_handle() and send replies returned by it. Add oap_config to sgsn_config (todo: vty). Sponsored-by: On-Waves ehf [hfreyther: Fix coding style]
2015-10-13gprs: Use RAND_bytes for p-tmsiDaniel Willmann1-0/+1
[hfreyther: Link to libcrypto, include header, add uint8_t* cast]
2015-10-13sgsn/test: Really parse received DL LLC messagesJacob Erlbeck1-0/+1
Currently just the number of intercepted downlink messages is counted and eventually checked. The contents of the messages is lost. The PTMSI contained in ATTACH/RAU Accept messages is just 'guessed' by resetting the random number generator after reference PTMSIs have been generated. While this works with rand_r, RAND_bytes cannot be forced to recreate a certain number sequence this way (unless the backend is replaced). This commit changes that behaviour so that the last received msgb is kept and decoded. The PTMSI that has been assigned by the SGSN is then taken in the affected test cases and used instead of a 'guessed' one. This is similar to how a real MS would react to the Accept message. Sponsored-by: On-Waves ehf
2015-10-12Revert "gprs: Use RAND_bytes for p-tmsi"Holger Hans Peter Freyther1-1/+0
The commit not compiling/linking should have been a strong indicator that it has not been tested either. This reverts commit 6cf0249dacc4ae46eb0857c007906c9a3f128a3e.
2015-10-12gprs: Use RAND_bytes for p-tmsiDaniel Willmann1-0/+1
[hfreyther: Link to libcrypto, include header, add uint8_t* cast]
2015-05-25sgsn: Allow to resolve the IPv4 address of a GGSN through DNSHolger Hans Peter Freyther1-1/+3
For real networks we need to check if the requested APN string is allowed and then resolve the GGSN address through DNS. There are countries with two or three digit MNCs and one could either try to keep a list of countries that have two/three digits or just try both of them. I have opted for the later for the ease of the implementation. C-Ares doesn't allow to cancel a request so we will need to have the MMCTX and the Lookup have different lifetimes. We simply set ->mmctx to NULL in case the MMCTX dies more early. The selected and verified apn_str will be copied into the out parameter. In case no static APN/GGSN config is present and the dynamic mode is enabled a request will be made.
2015-01-26sgsn: Remove inactive LLME/MM after inactivity timeoutJacob Erlbeck1-1/+1
Currently old LLMEs and MM contexts that haven't been explicitly detached or cancelled are not removed until another request with the same IMSI is made. These stale entries may accumulate over time and severely compromise the operation of the SGSN. This patch implements age based LLME expiry, when the maximum age has been reached, the corresponding MM context is cancelled. If such an MM context doesn't exist, the LLME is unassigned directly. The implementation works as follows. - llme->age_timestamp is reset on each received PTP LLC message - sgsn_llme_check_cb is invoked periodically (each 30s) - sgsn_llme_check_cb sets the age_timestamp to the current time if it has been reset - sgsn_llme_check_cb computes the age and expires the LLME if it exceeds gprs_max_time_to_idle() Ticket: OW#1364 Sponsored-by: On-Waves ehf [hfreyther: Fix typo in comment LMME -> LLME]
2015-01-18sgsn/test: Add test that intercepts gprs_gsup_client_sendJacob Erlbeck1-1/+2
This test replaces gprs_gsup_client_send by a custom function, that emulates a GSUP remote peer by calling gprs_subscr_rx_gsup_message with responses for all requests. It then executes a full Attach/Detach cycle. Sponsored-by: On-Waves ehf
2015-01-18gprs: Move protocol value_strings to gsm_04_08_gprs.cJacob Erlbeck1-0/+1
Currently the mapping between GSM 04.08 (GPRS) protocol specific numbers and their textual description was put into gprs_gmm.c and not exported. This commit moves the mappings to a new file gsm_04_08_gprs.c, renames some of them, and exports them via gsm_04_08_gprs.h. The following identifiers are renamed to match the corresponding type names: - gmm_cause_names -> gsm48_gmm_cause_names - gsm_cause_names -> gsm48_gsm_cause_names Sponsored-by: On-Waves ehf
2015-01-18sgsn: Integrate the GSUP client into the SGSNJacob Erlbeck1-0/+2
This commit adds GSUP client configuration (via VTY), connection set up, and real message sending. The following configuration commands are added: - gsup remote-ip A.B.C.D set server IP address - gsup remote-port PORT set server TCP port Ticket: OW#1338 Sponsored-by: On-Waves ehf
2015-01-10gprs: Add subscriber functions to create/handle GSUP messagesJacob Erlbeck1-0/+2
This patch extends gprs_subscr_query_auth_info and gprs_subscr_location_update to create GSUP messages with the help of a static gprs_subscr_tx_gsup_message function. A corresponding gprs_subscr_rx_gsup_message is added which takes a messages, gets the subscr, and updates it accordingly. Sponsored-by: On-Waves ehf [hfreyther: Added a msgb_free gprs_subscr_tx_gsup_message]
2014-12-24sgsn: Add a subscriber based authentication phaseJacob Erlbeck1-1/+2
This implements the MAP way of subscriber validation when the MS tries to perform an Attach Request: 1. perform authentication (optionally invoke the sendAuthInfo procedure), starts the Auth & Ciph procedure 2. perform update location 3. insert subscriber data 4. finish the update location 5. Attach Accept / Attach Reject The authentication triplets are used and eventually updated if all of them have been used. This is currently accessible via the VTY interface by the following commands: - update-subscriber imsi IMSI update-auth-info - update-subscriber imsi IMSI update-location-result (ok|ERR-CAUSE) Sponsored-by: On-Waves ehf
2014-12-09sgsn: Integrate subscriber handling into the SGSNJacob Erlbeck1-1/+2
This commit adds a new authorization policy 'remote' and uses the subscriber cache for authorization when this policy is being used. Note that there is no remote backend implemented yet. After the IMSI/IMEI have been acquired, a request would be sent to the remote peer. The attach/auth-ciph procedure continues when authorization info has been received from the peer. This means, that gprs_subscr_update() must be called then to tell the GMM layer that it can proceed. A later commit will add VTY commands to do this manually. Sponsored-by: On-Waves ehf
2014-12-09sgsn: Add gprs_subscriber.cJacob Erlbeck1-0/+5
This patch adds GPRS specific functions for gsm_subscriber objects (allocation, retrieval, deletion) and subscriber data requests/updates. The sgsn_update_subscriber_data callback is used to notify the sgsn about updates and is extended by a parameter that passes a reference to a gsm_subscriber. Sponsored-by: On-Waves ehf
2014-10-27sgsn: Moved IMSI ACL management to sgsn_auth.cJacob Erlbeck1-0/+1
Currently the ACL code is located in sgsn_vty.c. This commit moves this to a new file sgsn_auth.c as a first step to make authorization more flexible in order to implement remote acquisition on subsciber data. Sponsored-by: On-Waves ehf
2014-10-09sgsn: Create testcase that verifies that llmes get deletedHolger Hans Peter Freyther1-1/+13
On an "unassignment" this code verifies that the LLME will vanish from the list of LLMEs. We assume that this doesn't create a memory leak.
2014-10-09sgsn: Add boilerplate code for a SGSN testHolger Hans Peter Freyther1-0/+10
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