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gitosis at osmocom.org gitosis at osmocom.orgThis is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "The OpenBSC GSM Base Station Controller (+MSC/HLR/SGSN)". The branch, master has been updated via 8825c6940957fa2198d1f9995856e4232bc264fb (commit) via e14f4b93f2cd5b87c5a0c0141662a2c7be3e0f87 (commit) from 2440f49a724f19a2f14b6ee1d4616c347b7d33ba (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- http://cgit.osmocom.org/openbsc/commit/?id=8825c6940957fa2198d1f9995856e4232bc264fb commit 8825c6940957fa2198d1f9995856e4232bc264fb Author: Neels Hofmeyr <nhofmeyr at sysmocom.de> Date: Mon Dec 5 16:50:47 2016 +0100 Fix TCH/F_PDCH: no need to check ts subslots for PDCH For TCH/F_PDCH in PDCH mode, directly return the lchan to use, in order to switch it to TCH/F. To check the pchan type in chan_alloc.c, make ts_pchan() public in gsm_data_shared.h. Commit c3f72f63afde926dfc46827d6880055597515fb6 broke TCH/F_PDCH, as a fallout of setting the GSM_PCHAN_PDCH subslots number to 0. This is sane and correct, but the chan_alloc code failed to see a ts as available if it has no subslots. Explanation: _lc_find_trx() checks each timeslot. For normal, static TCH timeslots we determine the number of logical subslots contained and check whether one of them is free. For dynamic TS, we can do the same when in TCH mode, but when in PDCH mode, we already know that it is available for immediate switchover for voice and hence can return it right away. TCH/F_TCH/H_PDCH already has a special check for that. TCH/F_PDCH doesn't, but this worked for TCH/F_PDCH as long as ts_subslots() returned 1 for PDCH: the for-loop at the bottom of _lc_find_trx() checked one subslot, which succeeded on an lchan in PDCH mode, since PDCH lchans are always marked type == NONE and state == NONE. Now we more accurately acknowledge that a PDCH timeslot has zero subslots and that a dynamic timeslot in PDCH mode can always be switched to voice immediately, without checking lchan type or state. So, above mentioned commit set PDCH to zero subslots, and the for-loop to check the (zero) subslots never ran and hence never returned the lchan. This fix adds a special condition for TCH/F_PDCH in PDCH mode, same as TCH/F_TCH/H_PDCH. (Todo: ts_pchan() can probably be used in other places as well to remove some code dup. Leaving that for another patch.) Fixes: OS#1868 Change-Id: I5d555d018a5bcb8d948e54059d32ec4c9b3070d0 http://cgit.osmocom.org/openbsc/commit/?id=e14f4b93f2cd5b87c5a0c0141662a2c7be3e0f87 commit e14f4b93f2cd5b87c5a0c0141662a2c7be3e0f87 Author: Neels Hofmeyr <nhofmeyr at sysmocom.de> Date: Mon Dec 5 16:48:36 2016 +0100 cosmetic: chan_alloc: use switch instead of if-cascade Preparing cosmetically for a subsequent commit which will add another pchan kind to be checked, rather use a "switch (pchan) {}". Also reverse one if() branch to "early-exit" style. Change-Id: Ie5eb0fa859c4f225616095dc56d52ce0f2dc8bdc ----------------------------------------------------------------------- Summary of changes: openbsc/src/libbsc/chan_alloc.c | 28 +++++++++++++++++++--------- 1 file changed, 19 insertions(+), 9 deletions(-) hooks/post-receive -- The OpenBSC GSM Base Station Controller (+MSC/HLR/SGSN)