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Andreas Eversberg andreas at eversberg.euhi,
i reworked my l1sap patches for osmo-bts. (they are the base for adding
osmo-bts-trx model code, which allow support for OpenBTS transceivers,
like UmTRX or Calypso-BTS.) each single patch was tested, if
Sysmocom-BTS is still functioning after applying it, rather than testing
all patches together. i do not send the patches to mailing list, since
there are 21 patches, and i don't want to spam the list before i know
that these patches are small enough to be reviewed and understood. the
branch is jolly/l1sap_parts. please let me know, whether they require
better description or finer splitting.
regards,
andreas
from last path to first patch:
commit 0c0229886f6f6eba029c044e4cac8b420d86cd1c
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sun Sep 1 12:30:52 2013 +0200
Remove obsolete gsmtap handling from osmo-bts-sysmo part.
commit dfc8a3635e527960fa615c4ce7342e9739230a79
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sun Jun 16 15:09:56 2013 +0200
sysmobts: Forward CMR from L1 (Phone) to RTP payload
commit 8cfffc712914107fe8277c96ad3afb1891f25014
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sun Sep 1 12:06:19 2013 +0200
Add gsmtap option to command line to main.c of osmo-bts-sysmo
commit 8ca47efb9cf9861a2766c41b96469263e1e13ed9
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sun Sep 1 12:04:49 2013 +0200
Move gsmtap VTY commands from osmo-bts-sysmo to common part
commit 2653aee1604d1504d707c9ed264dcb5cdaf2b01d
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Mon Jul 29 09:45:22 2013 +0200
Send primitives at PH-/MPH-/TCH-SAP interface via GSMTAP
commit 66c08e87a2985ffd48e6d870ac6318c2b82a1476
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sun Sep 1 11:57:07 2013 +0200
Move loopback control VTY commands from osmo-bts-sysmo to common part
commit 8015bfcb3014c707bfe16ed4b52612e6fe377e75
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Thu Feb 14 11:17:58 2013 +0100
Correctly fill system information messages from BSC
SI 5*/6 require L2 header of 0x03,0x03. All SI might be less than 23
octets, so they need to be filled with 0x2b.
commit ebc180d0270293195c830193234608629b50bc03
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sun Jun 16 13:26:14 2013 +0200
sysmobts: Clean up transitions for lchan cipher state
There are three transitions:
1. LCHAN_CIPH_NONE -> LCHAN_CIPH_RX_REQ -> LCHAN_CIPH_RX_CONF
It is used to enable ciphering in RX (uplink) direction only.
2. LCHAN_CIPH_RX_CONF -> LCHAN_CIPH_RX_CONF_TX_REQ ->
LCHAN_CIPH_RXTX_CONF
It is used to additionally enable ciphering in TX (downlink) direction.
3. LCHAN_CIPH_NONE -> LCHAN_CIPH_RXTX_REQ -> LCHAN_CIPH_RX_CONF_TX_REQ
-> LCHAN_CIPH_RXTX_CONF
It is used to enable ciphering in both TX and RX directions. This is
used
when the channel is activated with encryption already enabled.
(assignment
or handover)
In order to follow the order of these transitions, the RX direction must
always be set before the TX direction.
If no cipher key is set (A5/0), ciphering is set to ALG 0, but lchan
cipher
state remains at LCHAN_CIPH_NONE.
commit c5f478d8d6702961dfb74642108187e653a05775
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sat Aug 31 20:30:40 2013 +0200
Add MEAS (MPH_INFO) IND message to PH-/MPH-/TCH-SAP interface
This part moves processing of measurement infos from osmo-bts-sysmo to
common part.
commit ffc1cc39ea28b695b98eedd1d16bdd023e4a77ad
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sun Sep 1 11:09:20 2013 +0200
Add SDCCH/SACCH/FACCH messages to PH-/MPH-/TCH-SAP interface
This part moves control channel message primitives from
osmo-bts-sysmo to
common part.
In order to control ciphering fo BTS model, CIPHER (MPH_INFO)
messages are
used.
commit adc84b8db3bff29b5c681e04e078ee6000e5f4bf
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sun Sep 1 10:08:15 2013 +0200
Add TCH messages to PH-/MPH-/TCH-SAP interface
This part moves TCH handling from osmo-bts-sysmo to common part. The RTP
handling is done at the common part, so they can be used by other BTS
models.
commit 2510e3f23ed4fa0a469484703c6b86574f175cdc
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sun Sep 1 09:19:45 2013 +0200
Move chan act/rel/modify from bts_model to PH-/MPH-/TCH-SAP interface
This part replaces channel activation/deactivation/modification routines
by MPH_INFO messages.
commit b1df874be87cf09290a3dd0d95790bc74f3d09fa
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sun Sep 1 09:02:24 2013 +0200
Relace bts_model_get_time() by get_time() at common part
commit f5b8b0de3303cefb06838991441e24c6d58e7aae
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sat Aug 31 19:49:12 2013 +0200
Add TIME (MPH_INFO) IND messages to PH-/MPH-/TCH-SAP interface
This part moves GSM time handling from osmo-bts-sysmo part to common
part.
commit a8d8eac3924517842c69a8d2b8ea4d8f17ce2c3a
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Fri Aug 30 08:48:38 2013 +0200
Add PDCH messages to PH-/MPH-/TCH-SAP interface
This part moves PDTCH, PACCH and PTCCH message primitives from
osmo-bts-sysmo to common part.
commit ebcbe2f73078200317d5b8a134753a069f9c3572
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Fri Aug 30 08:03:09 2013 +0200
Add PCH/AGCH message to PH-/MPH-/TCH-SAP interface
This part moves PCH and AGCH message primitives from osmo-bts-sysmo to
common part.
commit 0521a5b654251fcd9a2923c607c8dbad3bd44a30
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Fri Aug 30 07:46:30 2013 +0200
Add RACH message to PH-/MPH-/TCH-SAP interface
This part moves RACH message primitives from osmo-bts-sysmo to common
part.
commit 2ee4f41d6c5fe78bb0c347e673e2411486f2bc3f
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Mon Jul 29 09:42:23 2013 +0200
Add BCCH message to PH-/MPH-/TCH-SAP interface
This first part moves BCCH message primitives from osmo-bts-sysmo to
common
part. A new file "common/l1sap.c" is introduced to implement handling of
layer 1 messages from/to BTS model.
commit 4db570049f7ef6f7604e504083e8a3b751b09d6c
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Mon Jul 29 09:37:07 2013 +0200
Add header file of PH-/MPH-/TCH-SAP interface to common part of osmo-bts
Instead of handling primitives directly at layer 1 specific code,
osmo-bts handles primitives at common code.
When all primitive are moved, the l1sap interface will:
- receive PH-DATA indications and forward them to layer 2.
- check for RF link loss and notify BSC.
- receive TCH indications and forward them via RTP.
- receive PH-RTS indications and send PH-DATA requests with content
according to its logical channel.
- receive TCH-RTS indications and send TCH requests with content
received via RTP or loopback from TCH indications.
- send MPH-INFO requests to activate, deactivate and modify logical
channels and handle their confirms.
- receive MPH-INFO indications with measurements from tranceiver.
- forward received and transmitted PH-DATA to GSMTAP.
commit ebb73d8cc333584d440398a7bed41f3584693f40
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Sun Jul 28 11:48:40 2013 +0200
sysmo-bts: Use correct boundaries of L1 msg when forwarding to L1 proxy
In case of a headroom in a message, the 'head' pointer will not point to
the actual data.
commit 2ef39102fed2167014938221411055a43a1dd763
Author: Andreas Eversberg <jolly at eversberg.eu>
Date: Tue Feb 5 09:31:20 2013 +0100
Remove obsolete osmo-bts-bb code