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* gprs: Ignore NS RESET_ACK and ALIVE_ACK without RESETJacob Erlbeck2013-10-301-6/+0
| | | | | | | | | | | Currently those messages are answered by a NS_STATUS message when received on an uninitialised (no NS_RESET hat been seen yet) NS_VC which violates GPP TS 08.16 7.3.1 and 7.4.1. This patch adds checks to gprs_ns_vc_create() and eventually returns before the error NS_STATUS message is generated. Sponsored-by: On-Waves ehf
* grps: Add test for NS messages that shall be ignoredJacob Erlbeck2013-10-302-0/+55
| | | | | | | | | | Several messages shall not be answered when a RESET hasn't been received on a NS-VC: - NS_RESET_ACK (see 3GPP TS 08.16, 7.3.1) - NS_ALIVE_ACK (see 3GPP TS 08.16, 7.4.1) - NS_STATUS (see 3GPP TS 08.16, 7.5.1) Sponsored-by: On-Waves ehf
* gb: Create new NSVC object instead of patching the NSVCIJacob Erlbeck2013-10-242-12/+28
| | | | | | | | | When a RESET is received on the same link with a different NSVCI from a BSS on a dynamically created NS connection do not patch the nsvc object but create a new one instead. Thus the NSVCI is never modified at a nsvc object after the NS-VC has been established. Sponsored-by: On-Waves ehf
* gb: Fix RESET handling with changing NSEIJacob Erlbeck2013-10-241-22/+27
| | | | | | | | | This modifies the NS stack's behavior to accept RESET and RESET_ACK NSEI changes for NS-VC dynamically created by RESET messages from BSSes. This feature is not used for NS-VC configured via VTY or NS-VC to a SGSN. Sponsored-by: On-Waves ehf
* gb: Fix NS RESET/RESET_ACK abnormal casesJacob Erlbeck2013-10-242-101/+74
| | | | | | | | | | | | | | | | This changes the implementations for the reception of RESET and RESET_ACK to be compatible with 3GPP TS 08.16, 7.3.1: - Just send a RESET_ACK with correct values back to the SGSN when a RESET with an invalid NSVCI or NSEI has been received. - Check RESET_ACK for matching NSEI and NSVCI. - Ignore unexpected RESET_ACKs. In addition, use RESET_ACK from a BSS to update the BSS source address based on the NSVCI to be tolerant with changing UDP source addresses/ports. Sponsored-by: On-Waves ehf
* gb: Add test cases for NS RESET proceduresJacob Erlbeck2013-10-242-0/+703
| | | | | | | | | | | | Add a test handling proper and mismatching RESETs. The latter may occur, when ports change within a NS-VC without the SGSN getting notice. This tests for the behavior of the NS protocol stack for RESET and RESET_ACK messages which changing/invalid NSEI and NSVCI like it is being described in 3GPP TS 08.16, 7.3.1. Sponsored-by: On-Waves ehf
* gb: Fix gprs_nsvc_delete() to free ctr groupJacob Erlbeck2013-10-242-0/+127
| | | | | | | | | | | | | | | | | | | | This fixes a SEGV error that happens the next time the statistics are updated. Addresses: Program terminated with signal 11, Segmentation fault. #0 0xb7711fa5 in rate_ctr_group_intv (grp=<optimized out>) at rate_ctr.c:107 107 for (i = 0; i < grp->desc->num_ctr; i++) { #0 0xb7711fa5 in rate_ctr_group_intv (grp=<optimized out>) at rate_ctr.c:107 #1 rate_ctr_timer_cb (data=0x0) at rate_ctr.c:129 #2 0xb770ec59 in osmo_timers_update () at timer.c:243 #3 0xb770ef7a in osmo_select_main (polling=0) at select.c:133 #4 0x08049987 in main (argc=3, argv=0xbfba8084) at gb_proxy_main.c:306 Sponsored-by: On-Waves ehf
* gb: Fix gprs_active_nsvc_by_nsei()Jacob Erlbeck2013-10-171-10/+10
| | | | | | | The state matching condition is inverted. This is corrected by this fix. Sponsored-by: On-Waves ehf
* gb: Test sending messages to the SGSNJacob Erlbeck2013-10-172-53/+418
| | | | | | | This adds tests for the gprs_ns_sendmsg() function. For this it merges back functions from the gbproxy test. Sponsored-by: On-Waves ehf
* gb: Fix gprs_ns_rx_reset to not create NS-VC duplicatesJacob Erlbeck2013-10-152-3/+35
| | | | | | | | | | | | | | | | | | | | | | | | | Under special circumstances (see below) receiving a NS-RESET leads to duplicated NS-VC entries. This happens when the source port of a NS-VC changes to a new one that has already been used by another NS-VC. This patch changes gprs_ns_rx_reset() to check for this case and to use the existing NS-VC object. The NS-VC object that was associated with the source address before is detached from this source but kept in the NS-VC list so that it can be reattached when a correspondent NS-RESET is received later on. Meanwhile it will have a cleared link layer address which will not match a real link info. A new counter NS_CTR_REPLACED is incremented each time when the NS-VC object is replacing another one. A new signal S_NS_REPLACED is added which gets dispatched in this case, too. Another new counter NS_CTR_NSEI_CHG is incremented each time when the NSEI of a NS-VC object (with fixed NSVCI) changes. Ticket: OW#874 Sponsored-by: On-Waves ehf
* gb: Add functions to access the LL part of the NS-VC objectsJacob Erlbeck2013-10-151-5/+5
| | | | | | | | Adds the functions gprs_ns_ll_copy() and gprs_ns_ll_clear(). Renames gprs_ns_format_peer() to gprs_ns_ll_str(). All of these functions uniformly access the link layer part within the NS-VC objects. Sponsored-by: On-Waves ehf
* tests/gb: Show invoked signals in test outputJacob Erlbeck2013-10-112-1/+53
| | | | | | | Register an osmo signal handler to print a short notice about every SS_L_NS signal that is generated while processing the tests. Sponsored-by: On-Waves ehf
* gb: Use the NS-VCI to find an existing NS-VCJacob Erlbeck2013-10-081-3/+4
| | | | | | | | | | | | | | | | Currently when a NS-RESET is recevied over a link that has not yet been associated with a NS-VC, the NSEI is used to find an existing NS-VC. If one is found, the reset procedure is initiated. This behaviour is not conformant with 3GPP TS 08.16 (see chapter 4.2.3) which allows to use several NS-VC between two endpoints in parallel. The patch changes the implementation to use the NSVCI instead of the NSEI to search for an existing NS-VC object. Ticket: OW#874 Sponsored-by: On-Waves ehf
* gb: Fix NS-RESET response message orderJacob Erlbeck2013-10-081-18/+18
| | | | | | | | | | | | | | According to 3GPP TS 08.16, 7.3 "Reset procedure" the entity receiving a NS-RESET PDU responds with a NS-RESET-ACK and 'then' starts the test procedure which essentially means, that a NS-ALIVE gets sent and a timer is started. Currently the NS-ALIVE is sent before the NS-RESET-ACK. This patch fixes the implementation by reversing the order in which these messages are sent. Sponsored-by: On-Waves ehf
* tests/gb: Add test for GPRS NS protocolJacob Erlbeck2013-10-082-0/+371
| | | | | | This tests the connection establishment by directly calling gprs_ns_rcvmsg() and printing the resulting messages and the NS-VC list.
* bssgp: Address various compiler warnings in the bssgp codeHolger Hans Peter Freyther2013-09-161-0/+3
| | | | | | | | | gb/bssgp_fc_test.c: In function ‘fc_out_cb’: gb/bssgp_fc_test.c:46:1: warning: no return statement in function returning non-void [-Wreturn-type] gb/bssgp_fc_test.c: In function ‘fc_in’: gb/bssgp_fc_test.c:56:1: warning: no return statement in function returning non-void [-Wreturn-type] gb/bssgp_fc_test.c: In function ‘test_fc’: gb/bssgp_fc_test.c:79:3: warning: implicit declaration of function ‘usleep’ [-Wimplicit-function-declaration]
* tests: Make the gb test work with srcdir != builddirHolger Hans Peter Freyther2012-09-112-51/+53
| | | | | | | * Disable color and printing the filename of the stderr log target, update the results * Add the .ok, .err and .sh files to the extra_dist * Execute the shell script from the source directory
* BSSGP: make bvc_ctx->fc a dynamic talloc allocationHarald Welte2012-09-071-50/+50
| | | | | this ensures that we can talloc the flow-control queue entries as siblings off the bvc_ctx.
* GPRS BSSGP test: integrate into autotestHarald Welte2012-09-073-0/+216
| | | | we use a smalle shell script to iterate over multiple tests
* BSSGP flow-control: Add unit test for algorithm testsHarald Welte2012-09-071-0/+167
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