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Do not share config items between the current handover decision and the
upcoming handover_decision_2.
Rename current handover config items to hodec2_* and duplicate the ones
relevant to handover decision algorithm 1 with name prefix of hodec1_*.
I considered moving hodec2 parameters to an entirely separate .c file and
struct, but that causes considerable code bloat. Rather use the nice
handover_cfg net/bts level mechanism as-is, and simply prefix the names.
In the VTY, the hodec1 parameters are configurable by 'handover foo 23'
commands, while the hodec2 parameters are by 'handover2 foo 23'. The generic
VTY commands to enable/disable handover and to choose the algorithm are still
'handover (0|1)' and 'handover algorithm (1|2)'.
(Note, a subsequent commit will rename the 'handover foo' for hodec1 to
'handover1 foo' and add backwards-compat aliases.)
For example, the 'window rxlev averaging 5' command now exists both for
handover decision 1 and handover decision 2, and its values are independent.
This is valid config:
network
# set up handover decision algorithm 1
# (pending rename of these items to 'handover1 ...')
handover window rxlev averaging 5
handover window rxlev neighbor averaging 5
# set up handover decision algorithm 2
handover2 window rxlev averaging 7
handover2 window rxlev neighbor averaging 7
handover2 penalty-time max-distance 10
# enable handover
handover 1
bts 0
handover algorithm 1
bts 1
handover algorithm 2
In this example, bts 0 uses algo 1 with rxlev averaging of 5, while bts 1 uses
algorithm 2 where rxlev averaging of 7 is in effect.
Change-Id: I6475b2543b18d21710a6d774b214cb484f36ec8e
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chan_compat_with_mode() currently only considered the requirements of
voice/csd services. It failed to realize that GSM48_CMODE_SIGN
can also be performed over a SDCCH, resulting in unneeded channel
allocation/assignment to TCH type channels, e.g. for SMS.
This makes TC_assignment_sign pass.
Change-Id: I85ffcbd32ccd2617c897edb3b904f56bacd0684f
Closes: OS#2762
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Change-Id: I85528689b5298a13c60ae80fabd8d66459f730a9
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Change-Id: Iffbdfd7591aaeedf24ff0de5f34093be78e2833a
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The BSSMAP Cause value should give a clear indication of why a given
operation failed. Previously we were unconditionally sending
GSM0808_CAUSE_NO_RADIO_RESOURCE_AVAILABLE even in cases where mandatory
IEs were missing or other errors occurred unrelated to resource
availability.
Closes: OS#2759
Change-Id: I86adcae2950cbea6dcac4551cfde1054cb0abad1
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So far, the administrator had to pick one particular cipher which
would then be used throughout all subscribers/phones. This is a bit
impractical, as e.g. not all phones support A5/3. Extend the VTY
command syntax in a backwards-compatible way to permit for multiple
ciphers.
The bit-mask of permitted ciphers from the MSC (sent in ASSIGNMENT
COMMAND) is intersected with the vty-configured mask a the BSC.
Finally, the best (highest) possible cipher is chosen.
Change-Id: I1d1c8131855bcab2392b4f27f6216bdb2fae10e0
Closes: OS#2461
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About half of our log categories/subsystems were inherited from
OsmoNITB, and are no longer used but may confuse the user.
Change-Id: I8b39429f71c0faefdf8158a82093cfb19f44809e
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osmo_bsc_sigtran.c uses DRANAP instead of DMSC in two places,
this is not correct.
- change wrong DRANAP to DMSC
Change-Id: I1594d1906cf7d053d00fff52e9dc0ddfd097ed6e
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Once upon a time, in the old osmo-bsc-sccplite, there was a restriction
of not being able to handle configurations with both TCH/F and TCH/H
type codecs. This time is long gone, so let's remove this constraint.
Change-Id: Iba0822f57c41cedeeb7f069be540f3a851752a23
Closes: OS#2763
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There was always a 1:1 correspondence between gsm_subscriber_connection
and osmo_bsc_sccp_con, so there's really no point in having two separate
dynamically allocated data structures with pointers back and forth and
another linked list around.
Let's merge osmo_bsc_sccp_con into gsm_subscriber_connection for
simplicity.
The resulting code might not be elegant in places, but I've tried to
do only the most simple changes in this patch, while further
simplifications can be done in later subsequent patches.
As a side-effect, this patch also fixes lchan clearing if the MSC
(or the local SCCP provider) hard-disconnects the SCCP connection.
Change-Id: Idd2b733477ee90d24dec369755a00f1c39c93f39
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Print out the current neighbor cell list, works both for manual and
automatically populated modes.
Examples of output for various configs:
Neighbor Cells: Automatic, ARFCNs: (none)
Neighbor Cells: Automatic, ARFCNs: 868 (1)
Neighbor Cells: Manual, ARFCNs: 123 125 (2)
Neighbor Cells: Manual/separate SI5, ARFCNs: 123 125 (2) SI5: 321 (1)
Change-Id: I57dae0e01b81a6f028b39f3edcaf430251ca8fe2
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Change-Id: I56ee2edc7473dc5e9f3c3463194369024cd64995
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Have expicitly named vty write functions for bts and net levels, so that it is
trivial to add commands that exist only on one of each (like the upcoming
congestion check timer config for hodec2).
Change-Id: Ibea4c20abc50c3d655f6bbb1a643477dfc722c8e
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On BSSMAP Assignment Request received from the MSC, store the Speech Codec List
in the subscr conn, so that we may evaluate available codecs during handover
decision. (Will be used, e.g., by handover_decision_2.)
Change-Id: I8222d73085eb777696e365c94214c05d56e6d129
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Separate penalty timers API from specific struct members and move to own .h/.c
file, so that future code may re-use the API arbitrarily.
Change-Id: Ife975a1c7c17a500b1693be620475a8bea72f86f
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Explicitly log "Handover" or "Assignment", add more info to existing log
statements and add more log statements.
Log ho failure both on RR and HO log categories: RR receives the HO failure
message, while the HO failure is an important event to note when watching the
HO category.
Change-Id: Ia3999755cdd4e0c2861582b20e2dbb7e1538e074
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For re-assignment within the same cell, keep the same MS power. But for
handover to another cell, start off with that cell's configured maximum MS
power.
Change-Id: Ia91766d8bb8f543f514726ce9508b7747bb2bcb5
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We're really only interested in async handover so far.
Set ho->async to true always.
Change-Id: I48715864d4b953987c86d93fe1b3a5456f0c4e0f
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To keep this cosmetic change apart from subsequent functional changes:
have a local do_assigment flag and a local network pointer.
Change-Id: I09684dcf2a00e3d930e058cc1c925ad6e59b1468
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Upcoming handover_decision_2 will want to be able to handover to a differing
TCH type, hence add a parameter to bsc_handover_start(); adjust current callers
to pass the old lchan type.
Tweak the 'bts' argument to 'new_bts'.
Change-Id: I4478ebcaada00897cc38c5a299e07661139ed3c5
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memcpy obviously needs the byte size, not the ARRAY_SIZE. For the uint8_t
arrays, these are incidentally the same number, but semantically it should be
sizeof.
Change-Id: I97b6ac05192ad477b246a23ce00c5c91abfd938a
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Fixes: CID#182318
Change-Id: I3ad9d01cbffa287adce55b3569667b58a2d3556b
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Change-Id: I90eda8405f2d2eddfb041ca38b34fe30c397e09d
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In commit [1], the channel activation kind was modified out-of-context to use
Immediate Assignment in case of intra-cell re-assignment. This so far hasn't
worked out in tests, so instead stay with the strategy to use
RSL_ACT_INTER_ASYNC also for re-assignment within the same cell. We may move to
RSL_ACT_INTRA_IMM_ASS in a separate patch after proper testing.
[1]: 5eaa4fb821751b70ad2b864d8765ff96bd301996,
I2d91765c1f9719c64fd99426a872cecc724215db
"HO: add indicators for inter-cell and async ho, use for chan act type",
Note that so far, no re-assignment within cells is triggered by the current
handover decision algorithm, so the effect will be really noticeable with
handover decision 2 that is coming up.
See feature OS#2949 which asks for implementing actual RR Assignment to
handover within a cell.
Related: OS#2949
Change-Id: Ia3d979094fa16620f1acc5933418797829710ba8
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For unconnected BTS, the channel load would report a "bogus channel load
sample" every second (on RLL debug). Instead, skip unusable BTS.
This follows up on commit 6cee893a0f2c4e53155a2631aff12a5f615b973d /
I57e38f6d6ba3b23cc6e1f9520b90261dbb1f1cec
'Make "waiting indicator" of IMMEDIATE ASSIGN REJECT dynamic.'
Change-Id: I627fe10e1f5c1f2f23745c906320871024b5c8c3
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Add two-space indent to many items.
Change-Id: I34e3c8928871fc41b9551ab0502a42140ccbdda8
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Change-Id: I77039824b85a14b9d7bdfe6d2f717679b6886915
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Change-Id: I2e34ffb35e244472f8bfc993facc8d6e130f10d9
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Change-Id: I7cf4076d7e36ae71d88e70a86d5c2d0640c1146f
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Change-Id: I07d4a48af3154ee4d904686f230a51b8b8a94ff9
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This leaves common_cs.h practically empty. Leave its removal to the next patch,
which removes libcommon-cs entirely
(I07d4a48af3154ee4d904686f230a51b8b8a94ff9).
Change-Id: Ic3233f03580aa8c0ab178dfd33e68ecab5b9f042
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The gsm_network VTY was partly shared between libmsc and libbsc in the old
openbsc.git; now osmo-bsc.git has its own copy, so merge all of it into
bsc_vty.c.
This leaves common_cs_vty.c practically empty; leave removal of the file to
later, when we drop the entire libcommon-cs in
I07d4a48af3154ee4d904686f230a51b8b8a94ff9.
Note that gsmnet_from_vty() is also already declared in bsc/vty.h.
Change-Id: I6f3a596f31762b48afed39a85a343c400826300f
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These functions were originally shared between libmsc and libbsc in the old
openbsc.git; now osmo-bsc.git has its own copies, so move them into libbsc.
Change-Id: Ie411c2ce8008accee54782a442d6361e50777a54
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Change-Id: I7910ce8098d5431e41409bf09429ae4221efb360
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Some part of the network init was common between libbsc and libmsc in the old
openbsc.git repository. Now osmo-bsc.git is independent with its own copy of
the gsm_network initialization. So move it over to libbsc.
Change-Id: I8968787a5f0b078619264f0cb42349a9bc7943af
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a_reset.c was originally used by both libmsc and libbsc in the old openbsc.git
repository. Now osmo-msc.git has its own copy, and the idea of sharing
libcommon-cs is no longer applicable. Move it to libbsc where it belongs.
Change-Id: I30e4b5dab9c6d761d20a3a0e5b9ec2d65e64ebc5
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Move gsm_data.c and handover_cfg.c to libbsc, where they belong.
This leaves libcommon utterly empty, drop it.
Change-Id: I6178061fa30c7e1a4c22c29d3c8f508b1033569f
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The separation of gsm_data_shared.* from gsm_data.* historically allowed
compiling parts of it into osmo-bts, which we have dropped since (osmo-bts has
its own copy now). Even though gsm_data.* now becomes rather large by it,
remove the legacy separation to get rid of the "shared" naming, which is no
longer meaningful. A future patch might separate into meaningful smaller bits,
if we get the time.
Change-Id: Ie247bc492efb331871d970c56700595ad3f7e201
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Curiously, ipaccess-proxy.c is able to define its own tall_bsc_ctx even though
the same should already be linked from gsm_data.c. Declare it extern instead
and hence use the one from gsm_data.c.
A linking error actually occured as soon as I joined gsm_data_shared.c into
gsm_data.c, which is how my attention was drawn to this. I assume that linking
didn't necessarily pull in gsm_data.c before and a separate tall_bsc_ctx was
permitted. As soon as the next commit merges those files
(Ie247bc492efb331871d970c56700595ad3f7e201), it becomes impossible to define a
second tall_bsc_ctx in ipaccess-proxy.c.
Change-Id: I9c9c8540419876696e65a690717144d497d60fb2
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Interestingly enough, talloc_ctx_init() actually had not a single caller.
While dropping it, see to it that the few contexts that are actually used in
osmo-bsc.git are indeed initialized in all the main scopes.
Also initialize two void* ctxts as NULL explicitly, to allocate under the NULL
context in case some main scope forgets to branch it off another root context.
(That's bsc, fle and paging, all others actually come in from other libraries.)
Change-Id: I344a3d07e146999e154824837ed95db2b9879356
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Replace calls to make_sock() with osmo_sock_init_ofd().
Shame on me for not testing every single one in practice, I hope for peer
review to confirm that this should be correct... Read closely please!
The IPPROTO_GRE define seems to be unused (at least in osmo-bsc.git), drop it
completely.
Change-Id: Ia6e4e0e1eed3328fa25b3b90be376d532ad0e56b
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Provide concise log categories for each main scope.
Move the complete log categories 1:1 to osmo_bsc_main.c.
In bsc_nat.c, omit obviously unused log categories.
In tests, omit almost all log categories, except for those explicitly tested as
the expected output.
Note: should any logging occur for a log category that is omitted by accident,
such will end up being logged as DLGLOBAL, so it will show up and we can fix
it, and it will not get lost silently.
Change-Id: Ib524e49ec211662e0dfde8161495a72aa8ad76cf
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Move bsc_vty_go_parent() to osmo_bsc_main.c and bsc_nat.c, and drop those nodes
that aren't used in the respective main scope.
Change-Id: I22ebb76742e9c5ab9dd608ac089a5c558aceeb36
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Move the copyright string into osmo_bsc_main.c. No other users of it exist.
Change-Id: I7f48924f484e4e4b98be4ca8bee253e6ea9c0576
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This requires libosmocore with Change-Id
I43fc42880b22294d83c565ae600ac65e4f38b30d or later.
Change-Id: I1245b6818eb54f5c0c8adddcd3a01ecc7363fb42
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If a BTS/TRX does not respond to the "IPA RSL Connect" command,
pretend that the BTS has sent a NACK for the connection.
To ensure that osmo_timer_del(&trx->rsl_connection_timeout) is not called
before this timer is initialized with osmo_timer_setup(), the E1 layer now
drops incoming RSL messages from a BTS/TRX in LOCKED administrative state.
We cancel the timeout if we receive an RSL Connect ACK or NACK from the BTS,
and if the underlying E1 link does down.
While here, add a missing message buffer free() in bts_isdn_sign_link().
The callers do not free it.
Change-Id: Ia72b65a0f15f47dcb8a6f944f6c3695a4a64b923
Related: OS#2716
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osmo-msc does currently not check if an MS attemts to establish an
SACCH link on SAPI=0. This combination is not permitted and should
be dropped.
- Make sure that establish indication for SAPI=0 and channel-type=SACCH
is not permitted
See also TTCN3 Testcase:
BSC_Tests.TC_rll_est_ind_inval_sacch
Change-Id: I12962072c0ea689d2b9b5c2899ffb59be9310dcb
Closes: OS#2750
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When the first EstablishInd (DCCH) is made by the MS, then it must by
definition happen on SAPI=0. The MS may establish multiple connection
on other SAPIs afterwards. At the moment osmo-bsc does not check the
SAPI when an EstablishInd message is received.
- For SAPIs other than 0, check if SAPI=0 has already been
established
See also TTCN3 testcases:
BSC_Tests.TC_rll_est_ind_inval_sapi1
BSC_Tests.TC_rll_est_ind_inval_sapi3
Change-Id: Ibf4fca0bd42dfe5bc63e8b08754ebbe0a5e252c3
Closes: OS#2750
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In addition to logging the current values of a BTS's channel load
average and T3122 override, maintain stat items for these values.
This allows for plotting these values over time, for instance.
These values show up in the VTY under 'show stats' like this:
base transceiver station:
Channel load average.: 25 %
T3122 IMMEDIATE ASSIGNMENT REJECT wait indicator.: 32 s
Change-Id: Icace0176e8b1d23d7c7b4816f7c67c65312844fa
Suggested-by: laforge
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Change-Id: I87840aa0f5b9c04d7736bf5f649142219853711a
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