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- Log ----------------------------------------------------------------- http://cgit.osmocom.org/openbsc/commit/?id=d9e579c6af158c68116fc864fd7dfbb16...

commit d9e579c6af158c68116fc864fd7dfbb16f213200 Author: Neels Hofmeyr neels@hofmeyr.de Date: Sat Jul 23 20:15:28 2016 +0200

dyn TS: OS#1778 workaround: disable TCH/F on dyn TS

To avoid two phones picking mismatching TCH pchans, never pick TCH/F on dynamic TS for now.

See http://osmocom.org/issues/1778

Related: OS#1778 Change-Id: If7e4797a72815fc6e2bbef27756ea5df69f4bde7

http://cgit.osmocom.org/openbsc/commit/?id=157e63f05a419249c4b22cd5fe1b8fd55...

commit 157e63f05a419249c4b22cd5fe1b8fd55ffaf471 Author: Neels Hofmeyr neels@hofmeyr.de Date: Sat Jul 23 17:17:34 2016 +0200

dyn TS: Rename bsc_dyn_pdch.c to bsc_dyn_ts.c

It's no longer just for IPAC style TCH/F_PDCH, but also contains code for TCH/F_TCH/H_PDCH, so pick a more general name.

Change-Id: Ic19db81eca03fd72738839ee3686b6b4c8b6b437

http://cgit.osmocom.org/openbsc/commit/?id=e6c78819ccec5f43f535c654fe5a6ca0f...

commit e6c78819ccec5f43f535c654fe5a6ca0f15cdfbd Author: Neels Hofmeyr neels@hofmeyr.de Date: Sat Jul 23 20:08:41 2016 +0200

dyn TS: split dyn_pdch_init() for new dyn type and rename

Init both TCH/F_PDCH and TCH/F_TCH/H_PDCH via dyn_ts_init(), which refactors dyn_pdch_init().

Make dyn_ts_switchover_start from abis_rsl.c public in abis_rsl.h, so we can start the initial switchover to PDCH from dyn_ts_init(); in abis_rsl.h include gsm_utils.h for enum gsm_phys_chan_config.

Change-Id: I5c0b257ba8ff0e9c9a2268681a84b0681a778368

http://cgit.osmocom.org/openbsc/commit/?id=416dec4d964f9cbf1cc58e00973d20298...

commit 416dec4d964f9cbf1cc58e00973d202983ebe172 Author: Neels Hofmeyr neels@hofmeyr.de Date: Sat Jul 23 19:45:15 2016 +0200

dyn TS: implement pchan switchover logic

In struct gsm_lchan, add dyn.rqd_ref and dyn.rqd_ta. These save the Channel Requested details across the PDCH deactivation dance.

abis_rsl.c: add static functions:

* dyn_ts_switchover*() for the various stages of switchover between pchans.

* pchan_for_lchant() to derive the desired pchan from the lchan type that was set during lchan_alloc().

* rsl_chan_activate_lchan_as_pdch() to compose the simpler RSL CHAN ACT message without introducing numerous special cases to the normal RSL CHAN ACT code.

In rsl_chan_activate_lchan(), detect and initiate required pchan switchovers if requested pchan on a dyn TS differs.

In rsl_rx_rf_chan_rel_ack(), initiate or continue pchan switchovers after a channel was released.

In rsl_rx_chan_act_ack(), notice that a switchover is complete.

In chan_alloc.c, add ts_subslots(): abis_rsl.c will need to know the number of subslots per pchan, to verify that all lchans are free before dyn TS switchover. The subslots_per_pchan[] array is static to lchan_alloc.c, and since we need a non-trivial check for dyn TS anyway, add public ts_subslots() to lchan_alloc.c, which also checks the current dyn pchan type.

Change-Id: I5c6bce13092a10204113d84678c587c65e35e4fd

http://cgit.osmocom.org/openbsc/commit/?id=d30bf317bdd0120111c9a011a39d51e10...

commit d30bf317bdd0120111c9a011a39d51e1033ef703 Author: Neels Hofmeyr neels@hofmeyr.de Date: Sat Jul 23 19:51:09 2016 +0200

dyn TS: chan act: set chan_nr according to dyn pchan type

Change-Id: Ica5ef2197b3e97d5e895f3e3221295d5d0ef8908

http://cgit.osmocom.org/openbsc/commit/?id=01579a76a431869d275974f4fc768f045...

commit 01579a76a431869d275974f4fc768f04587438e1 Author: Neels Hofmeyr neels@hofmeyr.de Date: Thu Jul 14 03:01:24 2016 +0200

dyn TS: enhance channel allocator for dynamic TS

Change _lc_find_bts() to _lc_dyn_find_bts() with added dyn_as_pchan arg to pass exactly as which pchan we'd like to allocate on a dynamic TS. Add _lc_find_bts() as wrapper so non-dynamic-TS callers remain unchanged.

Also add dyn_as_pchan arg to _lc_find_trx() (not renaming to dyn and wrapping because there is only one caller).

Implement dynamic allocator logic in _lc_find_trx() and lchan_alloc().

A returned dynamic channel still needs to be switched to the proper mode, which will follow in another commit.

Replace a fixme comment with a normal comment in subslots_per_pchan[], because handling of dynamic TS is now defined.

Change-Id: I18da7679300c43220d9baa6a304e8df74d366249

http://cgit.osmocom.org/openbsc/commit/?id=434f72885d62a1580564bed64fdb86b48...

commit 434f72885d62a1580564bed64fdb86b48cdcb545 Author: Neels Hofmeyr neels@hofmeyr.de Date: Sat Jul 23 17:57:53 2016 +0200

dyn TS: rsl_lchan_lookup(): add dyn PCHAN

Accept GSM_PCHAN_TCH_F_TCH_H_PDCH for TCH/F and TCH/H if in matching pchan mode or switching to matching pchan.

Accept RSL_CHAN_OSMO_PDCH chan_nr cbits for GSM_PCHAN_TCH_F_TCH_H_PDCH pchan.

Change-Id: If8f7c118f69e5a9f370bfe25f82f3d5a8de75b51

http://cgit.osmocom.org/openbsc/commit/?id=bfc99d34d1ee3a5f7d88902fb9d0d1bdc...

commit bfc99d34d1ee3a5f7d88902fb9d0d1bdc57adc40 Author: Neels Hofmeyr neels@hofmeyr.de Date: Thu Jul 14 03:09:56 2016 +0200

dyn TS: verify_chan_comb(): handle new dyn TS NM_CHANC_*

Change-Id: I7ce754a48c7f492e921a4450745383bb8dd7225c

http://cgit.osmocom.org/openbsc/commit/?id=22e5fb6480abdc9f6712e7f205b984a4d...

commit 22e5fb6480abdc9f6712e7f205b984a4dd6eeba2 Author: Neels Hofmeyr neels@hofmeyr.de Date: Sat Jul 23 20:18:40 2016 +0200

dyn TS: rsl *2chan_nr(): handle TCH/F_TCH/H_PDCH

In gsm_lchan2chan_nr() use the current pchan type.

In gsm_lchan_as_pchan2chan_nr(), add the special case of non-standard cbits for activating PDCH on a TCH/F_TCH/H_PDCH dyn TS. This way, gsm_pchan2chan_nr() conforms to the standard and does not need access to a ts struct.

Change-Id: If248b9073b9f397110a2003d8e1a04afdc1c0e20

http://cgit.osmocom.org/openbsc/commit/?id=aec0280b0b6619810d87cb2c4caca7f4c...

commit aec0280b0b6619810d87cb2c4caca7f4c0fcac66 Author: Neels Hofmeyr neels@hofmeyr.de Date: Mon Jul 18 23:43:44 2016 +0200

dyn TS: gsm_lchan2chan_nr(): decouple from ts->pchan

For upcoming dynamic TS, the pchan choice for RSL De-/Activation is not trivial. So in order to pass the desired pchan to generate the RSL chan_nr, introduce gsm_lchan_as_pchan2chan_nr().

To avoid code dup, this requires decoupling the gsm_ts2chan_nr() pchan from the actual ts struct, so refactor gsm_ts2chan_nr() to gsm_pchan2chan_nr() with explicit pchan, ts_nr and lchan_nr arguments.

Change-Id: I1a40e8452fe8120d350a27973e56be0b8c8c517f

http://cgit.osmocom.org/openbsc/commit/?id=d313b4fa1e6d81dce5e80a3a031d4a163...

commit d313b4fa1e6d81dce5e80a3a031d4a163644ddcf Author: Neels Hofmeyr neels@hofmeyr.de Date: Sat Jul 23 21:00:51 2016 +0200

dyn TS: rename lchan->dyn_pdch to lchan->dyn

This will also be used by the new dynamic TS type, so make the name more general.

Change-Id: I2451b10519dff3e5cdf503b430574c0984d19000

http://cgit.osmocom.org/openbsc/commit/?id=3c1ec7eb11b69a7f0fb0cc04377734126...

commit 3c1ec7eb11b69a7f0fb0cc043777341264b01e19 Author: Neels Hofmeyr neels@hofmeyr.de Date: Sat Jul 23 19:49:58 2016 +0200

prepare dyn TS: act lchan: fetch the channel mode a bit later

Dyn TS will add a new type of chan activation, which does not need a Channel Mode IE. Incidentally, the dyn PDCH also doesn't need this IE if it opts for sending a PDCH ACT instead. So it makes sense to compose the Channel Mode IE only after the dynamic decisions are done.

Change-Id: I66d88ad6a4ae7bee1e552960fd4e92aff953125c

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