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2012-07-26Changes RLC/MAC code from C++ to Cjolly/outdated_cAndreas Eversberg19-68/+760
2012-07-26Moved all bitvector code to seperate fileAndreas Eversberg6-677/+147
This is required to remove C++ from other code.
2012-07-26Use final_ack_sent and contention_resolution_done to define ongoing UL TBFAndreas Eversberg3-7/+8
Both flags can be used to determine wether assignment must be sent on PCH or on AGCH. Before contention resolution is done, mobile will ignore downlink assinment. When final uplink acknowledge was sent, the mobile will go back to PCH after reception of akcnowledge.
2012-07-26Minor changes on comments of schedulerAndreas Eversberg1-3/+3
2012-07-25Be sure to priorize uplink assignment (PACCH)Andreas Eversberg1-15/+15
This is required because uplink assignment (PACCH) is done on a request by mobile, so the mobile expects that it get this assignment in return. After that we may assign downlink.
2012-07-25misc: Add the libosmocore CFLAGS to the CPPFLAGSHolger Hans Peter Freyther1-1/+1
libosmocore might not be in the standard include path, add the CFLAGS to the preprocessor flags. This is fixing the build on the Osmocom Jenkins.
2012-07-25Fixed two issues found by clang, pointed out by HolgerAndreas Eversberg2-1/+4
2012-07-25Replaced malloc() by talloc_zero() to be able to track memeory leaksAndreas Eversberg2-11/+15
2012-07-25Cleanup by splitting gprs_rlcmac_rcv_rts_block() into seperate methodsAndreas Eversberg1-115/+171
2012-07-24Added debugging of downlink bandwidthAndreas Eversberg5-0/+32
2012-07-24Added READMEAndreas Eversberg1-0/+22
2012-07-23Fix: gprs_rlcmac_trigger_downlink_assignment() selects correct channelAndreas Eversberg3-20/+19
In order to select correct channel (PCH or PACCH), a tbf pointer is set in case of PACCH. The tbf pointer points to TBF whose PACCH is used.
2012-07-23Fix: Kill pending downlink TBF, if mobile requests uplink TBF on RACHAndreas Eversberg1-0/+9
If the mobile misses assignment, it changes back to idle mode. In this case we must kill the pending downlink TBF, because it is not used by mobile and we can assign a new downlink TBF for new downlink data. (We may not have two downlink TBF with same TLLI!)
2012-07-23Fix: Send downlink assignment on PCH twice to make reception more safeAndreas Eversberg1-2/+4
If the mobile is not fast enough switching back to CCCH, the second assignment, which is sent later is usefull in this case.
2012-07-23Fix: We don't use timer to define when assignment is complete on PACCHAndreas Eversberg2-5/+26
Instead we use the event of sending assignment message. Then we set the TBF state to 'FLOW'.
2012-07-23VTY: Select timeslot allocation algorithm via VTYAndreas Eversberg2-6/+37
The selections are: single slot or multislot
2012-07-22Makefile.am: Actually install the pcu during 'make install'Harald Welte1-1/+3
2012-07-22Makefile.am: rename executable name from pcu to osmo-pcuHarald Welte1-3/+3
This makes more sense since the entire repository is called this way
2012-07-22import GPLv2 license text to this projectHarald Welte1-0/+339
2012-07-21Add check of lifetime of LLC frameAndreas Eversberg4-4/+131
If lifetime expires of queued LLC frames, they are discarded. The number of discarded frames and the sum of their octets are reported to SGSN via LLC-DISCARDED message. The lifetime can be overridden via VTY. The value can be centi-seconds or "infinite".
2012-07-20VTY: Added option to force given CS and ignore the scheme given by BTSAndreas Eversberg3-25/+79
2012-07-20Fixed Paging RR on PACCHAndreas Eversberg3-20/+34
Addition to 2b91464862270d72800b6dcc5a521f933fbbd489
2012-07-19Added paging for RR connection on PACCH of active TBFsAndreas Eversberg4-27/+282
Untested
2012-07-18Update to version 3 of PCU socket interface (includes version check)Andreas Eversberg2-5/+25
2012-07-16Changed log levels, to indicate abnormal eventsAndreas Eversberg1-15/+16
2012-07-16Check for downlink sequence is out of rangeAndreas Eversberg1-3/+15
This may happen, if Packer Downlink Assignment was not received by MS, so old TBF with old sequence number is still alive. In this case we free TBF.
2012-07-16Change polling interval for Packet Downlink Ack/NackAndreas Eversberg1-13/+17
This lowers the risk for stalling of transmit window.
2012-07-15If we already sent final Packet Uplink Ack/Nack, request DL TBF on PCHAndreas Eversberg1-1/+2
If network does not respond fast enough, the MS might already received final Packet Uplink Ack/Nack, so we need to assign new DL TBF on PCH.
2012-07-15No content resolution is required when UL TBF is requested during DL TBFAndreas Eversberg1-0/+1
2012-07-15Ignore Packet Resource RequestAndreas Eversberg1-6/+2
2012-07-15Only select TLLI, if it is valid (and not unset)Andreas Eversberg1-3/+2
2012-07-15Set coding scheme on Packet Uplink Ack/Nack messageAndreas Eversberg1-1/+2
This way the uplink speeds up too.
2012-07-15Minor fixes of debug output of channel allocationAndreas Eversberg1-4/+10
2012-07-15Fixed contention resolution issueAndreas Eversberg3-11/+24
In order to do downlink assignment during uplink TBF, the content resolution must be completed. It is completed when the first Packet Uplink Ack/Nack message is transmitted to the mobile.
2012-07-15Added missing TA value assignmentAndreas Eversberg1-0/+1
2012-07-15Adding multislot allocation algorithmAndreas Eversberg2-1/+430
2012-07-15Downlink transfer is finished if all packets are acknowlegedAndreas Eversberg1-4/+8
It turned out that the final ack flag may not be set, but all packets have been acknowledged. This patch will finish transfer in case all blocks are acknowledged.
2012-07-15Polling for downlink ack/nack is performed only on suitable slotAndreas Eversberg1-8/+20
The slot must be the control channel TS, which is selected by the allocation algorithm. The MS must be able to respond at this TS. The counter to trigger polling is incremented until polling has to be performed. Then the counter stops. When the transmission of data block is requested on control channel TS, the counter is reset. The counter-value is also used to poll immediately when the transmission has finished.
2012-07-15multislot: Rework of handling control channel / pollingAndreas Eversberg6-130/+236
In order to send control blocks to MS and receive control blocks from MS (polling), it is required to select one timeslot that the MS must be able to send and receive. The allocation algorithm must take care of selecting that slot.
2012-07-13Added parsing of multislot class inside BSSGP PDUAndreas Eversberg1-3/+35
2012-07-13multislot: Extracted "slot allocation algorithm" from tbf allocatorAndreas Eversberg4-60/+92
The current available algorithm only supports selecting a single slot for downlink/uplink. (In the future, a multislot algorithm will follow.)
2012-07-13Changed data structures for TBF and PDCH instances, to allow multislotAndreas Eversberg8-216/+411
The new data structure is required to define slot/TFI assigment for MS with multislot capability. Now there are two lists for TBFs: uplink and downlink. It is possible to have different TBFs with same TFI in the same direction, as long as they are assigned on different timeslots. See tbf.txt for description. Note: This does not implement any multislot support. It defines the new data structure. Currently only the first slot is assigned.
2012-07-13Adding signal handler to allow clean exit of PCUAndreas Eversberg4-4/+58
The signal handler will end the main loop, so clean exit is performed. The allocated memory is dumped in order to detect memory leaks. All talloc functions use tall_pcu_ctx context instead of NULL, to track memory leaks.
2012-07-13Removed obsolete if-conditionAndreas Eversberg1-4/+0
2012-07-13logging: Add vty to allow definition/storage of debug levelsAndreas Eversberg2-4/+48
Note: This requires new libosomocore that allows to compile VTY headers with C++.
2012-07-13VTY implementationAndreas Eversberg2-0/+126
2012-07-12Merge branch 'jolly_new'Ivan Kluchnikov20-2369/+3586
Merge is based on jolly_new branch with two modifications. 1. Modified PCU L1 interface. pcu_l1_if.cpp - common functions for tx and rx messages on L1 interface. sysmo_sock.cpp - SYSMO-PCU socket functions. openbts_sock.cpp - OpenBTS-PCU socket functions. pcuif_proto.h - L1 interface's primitives. 2. Modified encoding of RLC/MAC Control messages, now we use structures and encode_gsm_rlcmac_downlink() function for encode control blocks (without hand-coding).
2012-07-09Send downlink IMMEDIATE ASSIGNMENT on PCH and not on AGCHAndreas Eversberg6-23/+69
The IMSI is used to define paging group on which it is sent. This is tested with MS that requires correct paging group.
2012-07-07Fixed return value of pcu_l1if_open() when connection to BTS failsAndreas Eversberg1-1/+1
If connection fails, a retry timer is used to try again. This is not an error.
2012-07-06Restructured debugging levels to get better overview of TBFs/processesAndreas Eversberg5-134/+142
Only when using LOGL_DEBUG, every detailled information is displayed. When using LOGL_INFO, a summary of the process is displayed. When using LOGL_NOTICE, only errors and warnings like timeouts or invalid received informations are displayed. When using LOGL_ERROR, only local error like software errorss are displayed.