2013-10-17 15:01:54 +00:00
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/* bts.h
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*
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* Copyright (C) 2012 Ivan Klyuchnikov
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* Copyright (C) 2013 by Holger Hans Peter Freyther
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Introduce NACC support
A new nacc_fsm is introduced per MS object, with its partner priv
structure struct nacc_fsm_ctx, which exists and is available in the MS
object only during the duration of the NACC procedure.
The NACC context is created on an MS whenever a Pkt Cell Change
Notification is received on Uplink RLCMAC, which asks for neighbor
information of a given ARFCN+BSIC.
First, the target ARFCN+BSIC needs to be translated into a CGI-PS
(RAC+CI) address. That's done by asking the BSC through the Neighbour
Resolution Service available in osmo-bsc using the CTRL interface.
Once the CGI-PS of the target cell is known, PCU starts a RIM RAN-INFO
request against the SGSN (which will route the request as needed), and
wait for a response containing the SI bits from the target cell.
After the SI are received, the scheduler is instructed to eventually
poll a TBF for the MS originating the CCN, so that we can send the SI
encapsulated into multiple Packet Neighbor Cell Data messages on the
downlink.
One all the SI bits are sent, the scheduler is instructed to send a
Packet Cell Change Continue message.
Once the message above has been sent, the FSM autodestroys itself.
Caches are also introduced in this patch which allows for re-using
recently known translations ARFCN+BSIC -> CGI-PS and CGI-PS -> SI_INFO
respectively.
Change-Id: Id35f40d05f3e081f32fddbf1fa34cb338db452ca
2021-01-21 17:46:13 +00:00
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* Copyright (C) 2021 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de
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2013-10-17 15:01:54 +00:00
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#pragma once
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2021-01-14 15:48:38 +00:00
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#include <pdch.h>
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#include <stdint.h>
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#include <stdbool.h>
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2013-10-17 15:01:54 +00:00
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#ifdef __cplusplus
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extern "C" {
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2020-12-06 00:23:51 +00:00
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#endif
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2013-10-17 15:01:54 +00:00
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#include <osmocom/core/linuxlist.h>
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2013-10-27 08:02:31 +00:00
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#include <osmocom/core/rate_ctr.h>
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2015-11-27 18:05:13 +00:00
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#include <osmocom/core/stat_item.h>
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2019-09-05 12:48:35 +00:00
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#include <osmocom/core/tdef.h>
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2020-12-06 00:23:51 +00:00
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#include <osmocom/gprs/gprs_ns2.h>
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2016-08-17 09:47:21 +00:00
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#include <osmocom/gsm/l1sap.h>
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2017-09-01 09:02:40 +00:00
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#include <osmocom/gsm/protocol/gsm_04_08.h>
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2021-02-09 17:47:34 +00:00
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#include <osmocom/gsm/gsm48_rest_octets.h>
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TLLI 0x00000000 is a valid TLLI, use 0xffffffff instead
The assumption that TLLI 0x00000000 is invalid and can be used
as the initializer is wrong. Similar to TMSI, 0x00000000 is a
perfectly valid value, while 0xffffffff is reserved - use it.
According to 3GPP TS 23.003, section 2.4, a TMSI/P-TMSI with
all 32 bits equal to 1 is special and shall not be allocated by
the network. The reason is that it must be stored on the SIM,
where 'ff'O represents the erased state. According to section
2.6 of the same document, a local/foreign TLLI is derived from
P-TMSI, so the same rule applies to TLLI.
I manually checked and corrected all occurances of 'tlli' in the
code. The test expectations have been adjusted with this command:
$ find tests/ -name "*.err" | xargs sed -i "s/0x00000000/0xffffffff/g"
so there should be no behavior change. The only exception is
the 'TypesTest', where TLLI 0xffffffff is being encoded and
expected in the hexdump, so I regenerated the test output.
Change-Id: Ie89fab75ecc1d8b5e238d3ff214ea7ac830b68b5
Related: OS#4844
2020-11-08 06:27:35 +00:00
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#include <osmocom/gsm/gsm48.h>
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2020-03-26 14:14:01 +00:00
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#include "mslot_class.h"
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#include "gsm_rlcmac.h"
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Split PCU global PCU object from BTS object
Currently the BTS object (and gprs_rlcmac_bts struct) are used to hold
both PCU global fields and BTS specific fields, all mangled together.
The BTS is even accessed in lots of places by means of a singleton.
This patch introduces a new struct gprs_pcu object aimed at holding all
global state, and several fields are already moved from BTS to it. The
new object can be accessed as global variable "the_pcu", reusing and
including an already exisitng "the_pcu" global variable only used for
bssgp related purposes so far.
This is only a first step towards having a complete split global pcu and
BTS, some fields are still kept in BTS and will be moved over follow-up
smaller patches in the future (since this patch is already quite big).
So far, the code still only supports one BTS, which can be accessed
using the_pcu->bts. In the future that field will be replaced with a
list, and the BTS singletons will be removed.
The cur_fn output changes in TbfTest are actually a side effect fix,
since the singleton main_bts() now points internally to the_pcu->bts,
hence the same we allocate and assign in the test. Beforehand, "the_bts"
was allocated in the stack while main_bts() still returned an unrelated
singleton BTS object instance.
Related: OS#4935
Change-Id: I88e3c6471b80245ce3798223f1a61190f14aa840
2021-01-13 17:54:38 +00:00
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#include "gprs_pcu.h"
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2020-12-06 00:23:51 +00:00
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#ifdef __cplusplus
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2013-10-17 15:01:54 +00:00
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}
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2020-12-06 00:23:51 +00:00
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#endif
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2013-10-17 18:12:37 +00:00
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2013-10-19 19:10:38 +00:00
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#include "tbf.h"
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2020-05-18 09:35:35 +00:00
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#include "coding_scheme.h"
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2013-10-17 15:01:54 +00:00
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2015-06-18 15:16:26 +00:00
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struct GprsMs;
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2021-01-14 15:48:38 +00:00
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struct gprs_rlcmac_bts;
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2013-10-17 15:01:54 +00:00
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struct gprs_rlcmac_trx {
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void *fl1h;
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uint16_t arfcn;
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struct gprs_rlcmac_pdch pdch[8];
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2013-10-20 08:14:03 +00:00
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/* back pointers */
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2021-01-14 15:48:38 +00:00
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struct gprs_rlcmac_bts *bts;
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2013-10-20 08:14:03 +00:00
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uint8_t trx_no;
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2015-06-30 06:52:54 +00:00
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2021-05-13 16:39:36 +00:00
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/* list of uplink TBFs */
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struct llist_head ul_tbfs; /* list of gprs_rlcmac_tbf */
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/* list of downlink TBFs */
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struct llist_head dl_tbfs; /* list of gprs_rlcmac_tbf */
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2013-10-17 15:01:54 +00:00
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};
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2021-01-14 15:48:38 +00:00
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2016-09-19 14:17:06 +00:00
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#ifdef __cplusplus
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extern "C" {
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#endif
|
2021-03-08 13:15:54 +00:00
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void bts_trx_init(struct gprs_rlcmac_trx *trx, struct gprs_rlcmac_bts *bts, uint8_t trx_no);
|
Convert GprsMS and helpers classes to C
As we integrate osmo-pcu more and more with libosmocore features, it
becomes really hard to use them since libosmocore relies heavily on C
specific compilation features, which are not available in old C++
compilers (such as designated initializers for complex types in FSMs).
GprsMs is right now a quite simple object since initial design of
osmo-pcu made it optional and most of the logic was placed and stored
duplicated in TBF objects. However, that's changing as we introduce more
features, with the GprsMS class getting more weight. Hence, let's move
it now to be a C struct in order to be able to easily use libosmocore
features there, such as FSMs.
Some helper classes which GprsMs uses are also mostly move to C since
they are mostly structs with methods, so there's no point in having
duplicated APIs for C++ and C for such simple cases.
For some more complex classes, like (ul_,dl_)tbf, C API bindings are
added where needed so that GprsMs can use functionalitites from that
class. Most of those APIs can be kept afterwards and drop the C++ ones
since they provide no benefit in general.
Change-Id: I0b50e3367aaad9dcada76da97b438e452c8b230c
2020-12-16 14:59:45 +00:00
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void bts_trx_reserve_slots(struct gprs_rlcmac_trx *trx, enum gprs_rlcmac_tbf_direction dir, uint8_t slots);
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void bts_trx_unreserve_slots(struct gprs_rlcmac_trx *trx, enum gprs_rlcmac_tbf_direction dir, uint8_t slots);
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2021-01-18 16:53:29 +00:00
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void bts_trx_free_all_tbf(struct gprs_rlcmac_trx *trx);
|
Convert GprsMS and helpers classes to C
As we integrate osmo-pcu more and more with libosmocore features, it
becomes really hard to use them since libosmocore relies heavily on C
specific compilation features, which are not available in old C++
compilers (such as designated initializers for complex types in FSMs).
GprsMs is right now a quite simple object since initial design of
osmo-pcu made it optional and most of the logic was placed and stored
duplicated in TBF objects. However, that's changing as we introduce more
features, with the GprsMS class getting more weight. Hence, let's move
it now to be a C struct in order to be able to easily use libosmocore
features there, such as FSMs.
Some helper classes which GprsMs uses are also mostly move to C since
they are mostly structs with methods, so there's no point in having
duplicated APIs for C++ and C for such simple cases.
For some more complex classes, like (ul_,dl_)tbf, C API bindings are
added where needed so that GprsMs can use functionalitites from that
class. Most of those APIs can be kept afterwards and drop the C++ ones
since they provide no benefit in general.
Change-Id: I0b50e3367aaad9dcada76da97b438e452c8b230c
2020-12-16 14:59:45 +00:00
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2021-01-18 16:14:14 +00:00
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void bts_update_tbf_ta(struct gprs_rlcmac_bts *bts, const char *p, uint32_t fn,
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uint8_t trx_no, uint8_t ts, int8_t ta, bool is_rach);
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2016-09-19 14:17:06 +00:00
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#ifdef __cplusplus
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}
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#endif
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2020-09-16 19:52:02 +00:00
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2013-10-17 17:41:11 +00:00
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2020-05-12 18:54:35 +00:00
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enum {
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CTR_TBF_DL_ALLOCATED,
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CTR_TBF_DL_FREED,
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CTR_TBF_DL_ABORTED,
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CTR_TBF_UL_ALLOCATED,
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CTR_TBF_UL_FREED,
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CTR_TBF_UL_ABORTED,
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CTR_TBF_REUSED,
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CTR_TBF_ALLOC_ALGO_A,
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CTR_TBF_ALLOC_ALGO_B,
|
2021-02-25 16:21:32 +00:00
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CTR_TBF_ALLOC_FAIL,
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2021-02-25 17:30:33 +00:00
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CTR_TBF_ALLOC_FAIL_NO_TFI,
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CTR_TBF_ALLOC_FAIL_NO_USF,
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CTR_TBF_ALLOC_FAIL_NO_SLOT_COMBI,
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CTR_TBF_ALLOC_FAIL_NO_SLOT_AVAIL,
|
2020-05-12 18:54:35 +00:00
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CTR_RLC_SENT,
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CTR_RLC_RESENT,
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CTR_RLC_RESTARTED,
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CTR_RLC_STALLED,
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CTR_RLC_NACKED,
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CTR_RLC_FINAL_BLOCK_RESENT,
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CTR_RLC_ASS_TIMEDOUT,
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CTR_RLC_ASS_FAILED,
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CTR_RLC_ACK_TIMEDOUT,
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CTR_RLC_ACK_FAILED,
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CTR_RLC_REL_TIMEDOUT,
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CTR_RLC_LATE_BLOCK,
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CTR_RLC_SENT_DUMMY,
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CTR_RLC_SENT_CONTROL,
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CTR_RLC_DL_BYTES,
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CTR_RLC_DL_PAYLOAD_BYTES,
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CTR_RLC_UL_BYTES,
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CTR_RLC_UL_PAYLOAD_BYTES,
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CTR_DECODE_ERRORS,
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CTR_SBA_ALLOCATED,
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CTR_SBA_FREED,
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CTR_SBA_TIMEDOUT,
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CTR_LLC_FRAME_TIMEDOUT,
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CTR_LLC_FRAME_DROPPED,
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CTR_LLC_FRAME_SCHED,
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CTR_LLC_DL_BYTES,
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CTR_LLC_UL_BYTES,
|
2021-06-24 15:01:41 +00:00
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CTR_PCH_REQUESTS,
|
2021-11-08 18:19:25 +00:00
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CTR_PCH_REQUESTS_ALREADY,
|
2021-07-09 14:37:16 +00:00
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CTR_PCH_REQUESTS_TIMEDOUT,
|
2020-05-12 18:54:35 +00:00
|
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CTR_RACH_REQUESTS,
|
2021-11-02 15:47:06 +00:00
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CTR_RACH_REQUESTS_11BIT,
|
2021-11-02 15:59:13 +00:00
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CTR_RACH_REQUESTS_ONE_PHASE,
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CTR_RACH_REQUESTS_TWO_PHASE,
|
2021-11-02 16:20:59 +00:00
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CTR_RACH_REQUESTS_UNEXPECTED,
|
2020-05-12 18:54:35 +00:00
|
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CTR_SPB_UL_FIRST_SEGMENT,
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CTR_SPB_UL_SECOND_SEGMENT,
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CTR_SPB_DL_FIRST_SEGMENT,
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CTR_SPB_DL_SECOND_SEGMENT,
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CTR_IMMEDIATE_ASSIGN_UL_TBF,
|
2021-11-02 16:46:43 +00:00
|
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CTR_IMMEDIATE_ASSIGN_UL_TBF_ONE_PHASE,
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CTR_IMMEDIATE_ASSIGN_UL_TBF_TWO_PHASE,
|
2021-11-02 17:47:44 +00:00
|
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CTR_IMMEDIATE_ASSIGN_UL_TBF_CONTENTION_RESOLUTION_SUCCESS,
|
2020-05-12 18:54:35 +00:00
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CTR_IMMEDIATE_ASSIGN_REJ,
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CTR_IMMEDIATE_ASSIGN_DL_TBF,
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CTR_CHANNEL_REQUEST_DESCRIPTION,
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CTR_PKT_UL_ASSIGNMENT,
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CTR_PKT_ACCESS_REJ,
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CTR_PKT_DL_ASSIGNMENT,
|
Introduce NACC support
A new nacc_fsm is introduced per MS object, with its partner priv
structure struct nacc_fsm_ctx, which exists and is available in the MS
object only during the duration of the NACC procedure.
The NACC context is created on an MS whenever a Pkt Cell Change
Notification is received on Uplink RLCMAC, which asks for neighbor
information of a given ARFCN+BSIC.
First, the target ARFCN+BSIC needs to be translated into a CGI-PS
(RAC+CI) address. That's done by asking the BSC through the Neighbour
Resolution Service available in osmo-bsc using the CTRL interface.
Once the CGI-PS of the target cell is known, PCU starts a RIM RAN-INFO
request against the SGSN (which will route the request as needed), and
wait for a response containing the SI bits from the target cell.
After the SI are received, the scheduler is instructed to eventually
poll a TBF for the MS originating the CCN, so that we can send the SI
encapsulated into multiple Packet Neighbor Cell Data messages on the
downlink.
One all the SI bits are sent, the scheduler is instructed to send a
Packet Cell Change Continue message.
Once the message above has been sent, the FSM autodestroys itself.
Caches are also introduced in this patch which allows for re-using
recently known translations ARFCN+BSIC -> CGI-PS and CGI-PS -> SI_INFO
respectively.
Change-Id: Id35f40d05f3e081f32fddbf1fa34cb338db452ca
2021-01-21 17:46:13 +00:00
|
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CTR_PKT_CELL_CHG_NOTIFICATION,
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CTR_PKT_CELL_CHG_CONTINUE,
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CTR_PKT_NEIGH_CELL_DATA,
|
2020-05-12 18:54:35 +00:00
|
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CTR_RLC_RECV_CONTROL,
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CTR_PUA_POLL_TIMEDOUT,
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CTR_PUA_POLL_FAILED,
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CTR_PDA_POLL_TIMEDOUT,
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CTR_PDA_POLL_FAILED,
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CTR_PUAN_POLL_TIMEDOUT,
|
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CTR_PUAN_POLL_FAILED,
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CTR_PDAN_POLL_TIMEDOUT,
|
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CTR_PDAN_POLL_FAILED,
|
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|
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CTR_GPRS_DL_CS1,
|
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CTR_GPRS_DL_CS2,
|
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CTR_GPRS_DL_CS3,
|
|
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CTR_GPRS_DL_CS4,
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CTR_EGPRS_DL_MCS1,
|
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CTR_EGPRS_DL_MCS2,
|
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CTR_EGPRS_DL_MCS3,
|
|
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CTR_EGPRS_DL_MCS4,
|
|
|
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CTR_EGPRS_DL_MCS5,
|
|
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CTR_EGPRS_DL_MCS6,
|
|
|
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CTR_EGPRS_DL_MCS7,
|
|
|
|
|
CTR_EGPRS_DL_MCS8,
|
|
|
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CTR_EGPRS_DL_MCS9,
|
|
|
|
|
CTR_GPRS_UL_CS1,
|
|
|
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|
CTR_GPRS_UL_CS2,
|
|
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|
CTR_GPRS_UL_CS3,
|
|
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|
CTR_GPRS_UL_CS4,
|
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|
|
CTR_EGPRS_UL_MCS1,
|
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CTR_EGPRS_UL_MCS2,
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CTR_EGPRS_UL_MCS3,
|
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|
|
CTR_EGPRS_UL_MCS4,
|
|
|
|
|
CTR_EGPRS_UL_MCS5,
|
|
|
|
|
CTR_EGPRS_UL_MCS6,
|
|
|
|
|
CTR_EGPRS_UL_MCS7,
|
|
|
|
|
CTR_EGPRS_UL_MCS8,
|
|
|
|
|
CTR_EGPRS_UL_MCS9,
|
|
|
|
|
};
|
|
|
|
|
|
2020-05-12 20:45:04 +00:00
|
|
|
enum {
|
|
|
|
|
STAT_MS_PRESENT,
|
2021-09-02 10:23:58 +00:00
|
|
|
STAT_PDCH_AVAILABLE,
|
|
|
|
|
STAT_PDCH_OCCUPIED,
|
2021-09-08 07:33:24 +00:00
|
|
|
STAT_PDCH_OCCUPIED_GPRS,
|
|
|
|
|
STAT_PDCH_OCCUPIED_EGPRS,
|
2020-05-12 20:45:04 +00:00
|
|
|
};
|
|
|
|
|
|
2020-05-21 12:55:46 +00:00
|
|
|
/* RACH.ind parameters (to be parsed) */
|
|
|
|
|
struct rach_ind_params {
|
|
|
|
|
enum ph_burst_type burst_type;
|
|
|
|
|
bool is_11bit;
|
|
|
|
|
uint16_t ra;
|
|
|
|
|
uint8_t trx_nr;
|
|
|
|
|
uint8_t ts_nr;
|
|
|
|
|
uint32_t rfn;
|
|
|
|
|
int16_t qta;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* [EGPRS Packet] Channel Request parameters (parsed) */
|
|
|
|
|
struct chan_req_params {
|
|
|
|
|
unsigned int egprs_mslot_class;
|
|
|
|
|
unsigned int priority;
|
|
|
|
|
bool single_block;
|
|
|
|
|
};
|
|
|
|
|
|
2021-01-14 15:48:38 +00:00
|
|
|
struct GprsMsStorage;
|
|
|
|
|
struct pcu_l1_meas;
|
|
|
|
|
|
2013-10-17 17:41:11 +00:00
|
|
|
/**
|
|
|
|
|
* I represent a GSM BTS. I have one or more TRX, I know the current
|
|
|
|
|
* GSM time and I have controllers that help with allocating resources
|
|
|
|
|
* on my TRXs.
|
|
|
|
|
*/
|
2021-01-14 15:48:38 +00:00
|
|
|
struct gprs_rlcmac_bts {
|
2021-01-18 16:14:14 +00:00
|
|
|
uint8_t nr; /* bts_nr */
|
|
|
|
|
struct llist_head list; /* queued in pcu->bts_list */
|
2021-01-14 15:48:38 +00:00
|
|
|
bool active;
|
2021-01-20 12:48:31 +00:00
|
|
|
struct osmo_cell_global_id_ps cgi_ps;
|
2021-01-14 15:48:38 +00:00
|
|
|
uint8_t bsic;
|
|
|
|
|
uint8_t cs_mask; /* Allowed CS mask from BTS */
|
|
|
|
|
uint16_t mcs_mask; /* Allowed MCS mask from BTS */
|
|
|
|
|
struct { /* information stored from last received PCUIF info_ind message */
|
|
|
|
|
uint8_t initial_cs;
|
|
|
|
|
uint8_t initial_mcs;
|
|
|
|
|
} pcuif_info_ind;
|
|
|
|
|
uint8_t initial_cs_dl, initial_cs_ul;
|
|
|
|
|
uint8_t initial_mcs_dl, initial_mcs_ul;
|
|
|
|
|
/* Timer defintions */
|
|
|
|
|
struct osmo_tdef *T_defs_bts; /* timers controlled by BTS, received through PCUIF */
|
|
|
|
|
uint8_t n3101;
|
|
|
|
|
uint8_t n3103;
|
|
|
|
|
uint8_t n3105;
|
|
|
|
|
struct gprs_rlcmac_trx trx[8];
|
|
|
|
|
|
2021-01-25 22:43:52 +00:00
|
|
|
uint8_t si1[GSM_MACBLOCK_LEN];
|
|
|
|
|
bool si1_is_set;
|
2021-06-08 16:53:40 +00:00
|
|
|
uint8_t si2[GSM_MACBLOCK_LEN];
|
|
|
|
|
bool si2_is_set;
|
|
|
|
|
struct gsm_sysinfo_freq si2_bcch_cell_list[1024];
|
2021-01-25 22:43:52 +00:00
|
|
|
uint8_t si3[GSM_MACBLOCK_LEN];
|
|
|
|
|
bool si3_is_set;
|
2021-01-14 15:48:38 +00:00
|
|
|
uint8_t si13[GSM_MACBLOCK_LEN];
|
2021-06-01 14:43:41 +00:00
|
|
|
struct osmo_gsm48_si13_info si13_ro_decoded;
|
2021-01-14 15:48:38 +00:00
|
|
|
bool si13_is_set;
|
|
|
|
|
|
|
|
|
|
/* State for dynamic algorithm selection */
|
|
|
|
|
int multislot_disabled;
|
|
|
|
|
|
|
|
|
|
/* Packet Application Information (3GPP TS 44.060 11.2.47, usually ETWS primary message). We don't need to store
|
|
|
|
|
* more than one message, because they get sent so rarely. */
|
|
|
|
|
struct msgb *app_info;
|
|
|
|
|
uint32_t app_info_pending; /* Count of MS with active TBF, to which we did not send app_info yet */
|
|
|
|
|
|
|
|
|
|
/* main nsei */
|
|
|
|
|
struct gprs_ns2_nse *nse;
|
Split PCU global PCU object from BTS object
Currently the BTS object (and gprs_rlcmac_bts struct) are used to hold
both PCU global fields and BTS specific fields, all mangled together.
The BTS is even accessed in lots of places by means of a singleton.
This patch introduces a new struct gprs_pcu object aimed at holding all
global state, and several fields are already moved from BTS to it. The
new object can be accessed as global variable "the_pcu", reusing and
including an already exisitng "the_pcu" global variable only used for
bssgp related purposes so far.
This is only a first step towards having a complete split global pcu and
BTS, some fields are still kept in BTS and will be moved over follow-up
smaller patches in the future (since this patch is already quite big).
So far, the code still only supports one BTS, which can be accessed
using the_pcu->bts. In the future that field will be replaced with a
list, and the BTS singletons will be removed.
The cur_fn output changes in TbfTest are actually a side effect fix,
since the singleton main_bts() now points internally to the_pcu->bts,
hence the same we allocate and assign in the test. Beforehand, "the_bts"
was allocated in the stack while main_bts() still returned an unrelated
singleton BTS object instance.
Related: OS#4935
Change-Id: I88e3c6471b80245ce3798223f1a61190f14aa840
2021-01-13 17:54:38 +00:00
|
|
|
|
|
|
|
|
/* back pointer to PCU object */
|
|
|
|
|
struct gprs_pcu *pcu;
|
|
|
|
|
|
2021-03-10 11:19:04 +00:00
|
|
|
uint32_t cur_fn;
|
2021-01-14 15:48:38 +00:00
|
|
|
int cur_blk_fn;
|
|
|
|
|
uint8_t max_cs_dl, max_cs_ul;
|
|
|
|
|
uint8_t max_mcs_dl, max_mcs_ul;
|
|
|
|
|
struct rate_ctr_group *ratectrs;
|
|
|
|
|
struct osmo_stat_item_group *statg;
|
2013-10-17 18:12:37 +00:00
|
|
|
|
2021-01-14 15:48:38 +00:00
|
|
|
struct GprsMsStorage *ms_store;
|
2021-07-09 14:37:16 +00:00
|
|
|
|
|
|
|
|
/* List of struct bts_pch_timer for active PCH pagings */
|
|
|
|
|
struct llist_head pch_timer;
|
2013-10-17 15:01:54 +00:00
|
|
|
};
|
2013-10-17 17:59:56 +00:00
|
|
|
|
2021-01-14 15:48:38 +00:00
|
|
|
#ifdef __cplusplus
|
|
|
|
|
extern "C" {
|
|
|
|
|
#endif
|
2013-10-19 18:04:57 +00:00
|
|
|
|
Optimize PAGING-CS PDCH set selection when target MS is known
Before this patch, when a PAGING-GS was received in PCU from SGSN, it
would always forward the paging request to all PDCHs in all TRXs of all
BTS (well, it did some heuristics to avoid sending it in some PDCHs
where onyl repeated TBFs would be listening).
The previous behavior, didn't make much sense in the case where the PCU
is asked to page an MS which it knows (ie in which PDCHs is listening
to). Hence, in that case it makes sense to simply send the paging
request on 1 PDCH where the MS is listening, instead of sending it in a
big set of different PDCHs.
This commit also splits the old get_paging_mi() helper which was
erroneously created to parseboth CS/PS-PAGING requesst, since they
actually use a different set of target subscriber information (for
instance, CS-PAGING provides optionally a TLLI, and one provides P-TMSI
while the other provides TMSI).
In this patch, the handling of CS paging request is split into 2 parts:
1- A new helper "struct paging_req_cs" is introduced, where incoming
CS-PAGING requests (from both SGSN over BSSGP and BTS/BSC over PCUIF)
are parsed and information stored. Then, from available information, it
tries to find a target MS if avaialable
2- bts_add_paging() is called from both BSSGP and PCUIF paths with the
helper struct and the target MS (NULL if not found). If MS exists,
paging is forwarding only on 1 PDCH that MS is attached to. If no MS
exists, then the old heursitics are used to forward the request to all
MS.
Change-Id: Iea46d5321a29d800813b1aa2bf4ce175ce45e2cf
2021-05-13 15:44:51 +00:00
|
|
|
struct paging_req_cs {
|
|
|
|
|
uint8_t chan_needed;
|
|
|
|
|
uint32_t tlli; /* GSM_RESERVED_TMSI if not present */
|
|
|
|
|
bool mi_tmsi_present;
|
|
|
|
|
struct osmo_mobile_identity mi_tmsi;
|
|
|
|
|
bool mi_imsi_present;
|
|
|
|
|
struct osmo_mobile_identity mi_imsi;
|
|
|
|
|
};
|
|
|
|
|
|
2021-01-14 15:48:38 +00:00
|
|
|
struct GprsMs *bts_alloc_ms(struct gprs_rlcmac_bts *bts, uint8_t ms_class, uint8_t egprs_ms_class);
|
Optimize PAGING-CS PDCH set selection when target MS is known
Before this patch, when a PAGING-GS was received in PCU from SGSN, it
would always forward the paging request to all PDCHs in all TRXs of all
BTS (well, it did some heuristics to avoid sending it in some PDCHs
where onyl repeated TBFs would be listening).
The previous behavior, didn't make much sense in the case where the PCU
is asked to page an MS which it knows (ie in which PDCHs is listening
to). Hence, in that case it makes sense to simply send the paging
request on 1 PDCH where the MS is listening, instead of sending it in a
big set of different PDCHs.
This commit also splits the old get_paging_mi() helper which was
erroneously created to parseboth CS/PS-PAGING requesst, since they
actually use a different set of target subscriber information (for
instance, CS-PAGING provides optionally a TLLI, and one provides P-TMSI
while the other provides TMSI).
In this patch, the handling of CS paging request is split into 2 parts:
1- A new helper "struct paging_req_cs" is introduced, where incoming
CS-PAGING requests (from both SGSN over BSSGP and BTS/BSC over PCUIF)
are parsed and information stored. Then, from available information, it
tries to find a target MS if avaialable
2- bts_add_paging() is called from both BSSGP and PCUIF paths with the
helper struct and the target MS (NULL if not found). If MS exists,
paging is forwarding only on 1 PDCH that MS is attached to. If no MS
exists, then the old heursitics are used to forward the request to all
MS.
Change-Id: Iea46d5321a29d800813b1aa2bf4ce175ce45e2cf
2021-05-13 15:44:51 +00:00
|
|
|
int bts_add_paging(struct gprs_rlcmac_bts *bts, const struct paging_req_cs *req, struct GprsMs *ms);
|
2013-10-26 16:39:36 +00:00
|
|
|
|
2021-01-14 15:48:38 +00:00
|
|
|
uint32_t bts_rfn_to_fn(const struct gprs_rlcmac_bts *bts, int32_t rfn);
|
2015-05-13 11:33:12 +00:00
|
|
|
|
2021-01-14 15:48:38 +00:00
|
|
|
struct gprs_rlcmac_dl_tbf *bts_dl_tbf_by_tfi(struct gprs_rlcmac_bts *bts, uint8_t tfi, uint8_t trx, uint8_t ts);
|
|
|
|
|
struct gprs_rlcmac_ul_tbf *bts_ul_tbf_by_tfi(struct gprs_rlcmac_bts *bts, uint8_t tfi, uint8_t trx, uint8_t ts);
|
2015-05-13 11:33:12 +00:00
|
|
|
|
2021-03-29 16:40:18 +00:00
|
|
|
void bts_snd_dl_ass(struct gprs_rlcmac_bts *bts, struct gprs_rlcmac_tbf *tbf, uint16_t pgroup);
|
2015-08-21 16:00:54 +00:00
|
|
|
|
2021-03-10 11:19:04 +00:00
|
|
|
void bts_set_current_frame_number(struct gprs_rlcmac_bts *bts, uint32_t frame_number);
|
2021-03-17 14:26:37 +00:00
|
|
|
void bts_set_current_block_frame_number(struct gprs_rlcmac_bts *bts, int frame_number);
|
2021-03-10 11:19:04 +00:00
|
|
|
static inline uint32_t bts_current_frame_number(const struct gprs_rlcmac_bts *bts)
|
2015-12-28 18:15:40 +00:00
|
|
|
{
|
2021-01-14 15:48:38 +00:00
|
|
|
return bts->cur_fn;
|
2015-12-28 18:15:40 +00:00
|
|
|
}
|
|
|
|
|
|
2021-01-14 15:48:38 +00:00
|
|
|
int bts_tfi_find_free(const struct gprs_rlcmac_bts *bts, enum gprs_rlcmac_tbf_direction dir,
|
|
|
|
|
uint8_t *_trx, int8_t use_trx);
|
|
|
|
|
|
|
|
|
|
int bts_rcv_rach(struct gprs_rlcmac_bts *bts, const struct rach_ind_params *rip);
|
|
|
|
|
int bts_rcv_ptcch_rach(struct gprs_rlcmac_bts *bts, const struct rach_ind_params *rip);
|
|
|
|
|
int bts_rcv_imm_ass_cnf(struct gprs_rlcmac_bts *bts, const uint8_t *data, uint32_t fn);
|
|
|
|
|
|
|
|
|
|
void bts_send_gsmtap(struct gprs_rlcmac_bts *bts,
|
|
|
|
|
enum pcu_gsmtap_category categ, bool uplink, uint8_t trx_no,
|
|
|
|
|
uint8_t ts_no, uint8_t channel, uint32_t fn,
|
|
|
|
|
const uint8_t *data, unsigned int len);
|
|
|
|
|
void bts_send_gsmtap_meas(struct gprs_rlcmac_bts *bts,
|
|
|
|
|
enum pcu_gsmtap_category categ, bool uplink, uint8_t trx_no,
|
|
|
|
|
uint8_t ts_no, uint8_t channel, uint32_t fn,
|
|
|
|
|
const uint8_t *data, unsigned int len, struct pcu_l1_meas *meas);
|
|
|
|
|
void bts_send_gsmtap_rach(struct gprs_rlcmac_bts *bts,
|
|
|
|
|
enum pcu_gsmtap_category categ, uint8_t channel,
|
|
|
|
|
const struct rach_ind_params *rip);
|
|
|
|
|
|
2021-04-30 11:53:38 +00:00
|
|
|
struct GprsMsStorage *bts_ms_store(const struct gprs_rlcmac_bts *bts);
|
2021-01-14 15:48:38 +00:00
|
|
|
|
|
|
|
|
struct GprsMs *bts_ms_by_tlli(struct gprs_rlcmac_bts *bts, uint32_t tlli, uint32_t old_tlli);
|
2015-12-28 18:15:40 +00:00
|
|
|
|
2021-01-14 15:48:38 +00:00
|
|
|
static inline struct rate_ctr_group *bts_rate_counters(struct gprs_rlcmac_bts *bts)
|
2013-10-27 08:02:31 +00:00
|
|
|
{
|
2021-01-14 15:48:38 +00:00
|
|
|
return bts->ratectrs;
|
2013-10-27 08:02:31 +00:00
|
|
|
}
|
|
|
|
|
|
2021-01-14 15:48:38 +00:00
|
|
|
static inline struct osmo_stat_item_group *bts_stat_items(struct gprs_rlcmac_bts *bts)
|
2015-11-27 18:05:13 +00:00
|
|
|
{
|
2021-01-14 15:48:38 +00:00
|
|
|
return bts->statg;
|
2015-11-27 18:05:13 +00:00
|
|
|
}
|
|
|
|
|
|
2021-02-25 17:30:33 +00:00
|
|
|
static inline void bts_do_rate_ctr_inc(const struct gprs_rlcmac_bts *bts, unsigned int ctr_id) {
|
2021-06-04 15:05:51 +00:00
|
|
|
rate_ctr_inc(rate_ctr_group_get_ctr(bts->ratectrs, ctr_id));
|
2020-05-12 18:54:35 +00:00
|
|
|
}
|
|
|
|
|
|
2021-02-25 17:30:33 +00:00
|
|
|
static inline void bts_do_rate_ctr_add(const struct gprs_rlcmac_bts *bts, unsigned int ctr_id, int inc) {
|
2021-06-04 15:05:51 +00:00
|
|
|
rate_ctr_add(rate_ctr_group_get_ctr(bts->ratectrs, ctr_id), inc);
|
2020-05-12 20:32:24 +00:00
|
|
|
}
|
2016-05-21 17:45:23 +00:00
|
|
|
|
2021-01-14 15:48:38 +00:00
|
|
|
static inline void bts_stat_item_add(struct gprs_rlcmac_bts *bts, unsigned int stat_id, int inc) {
|
2021-06-04 15:05:51 +00:00
|
|
|
struct osmo_stat_item *item = osmo_stat_item_group_get_item(bts->statg, stat_id);
|
|
|
|
|
int32_t val = osmo_stat_item_get_last(item);
|
|
|
|
|
osmo_stat_item_set(item, val + inc);
|
2020-05-12 20:45:04 +00:00
|
|
|
}
|
2013-10-27 08:50:15 +00:00
|
|
|
|
2021-09-02 10:23:58 +00:00
|
|
|
#define bts_stat_item_inc(bts, stat_id) bts_stat_item_add(bts, stat_id, 1)
|
|
|
|
|
|
|
|
|
|
#define bts_stat_item_dec(bts, stat_id) bts_stat_item_add(bts, stat_id, -1)
|
|
|
|
|
|
2021-01-18 16:14:14 +00:00
|
|
|
struct gprs_rlcmac_bts *bts_alloc(struct gprs_pcu *pcu, uint8_t bts_nr);
|
2021-01-14 15:48:38 +00:00
|
|
|
|
Add new PDCH UL Controller, drop SBAllocator class
Right now we handle different types of UL allocations in different
classes like PollAllocator and SBAllocator, and they usually don't take
into account the other one in most cases. Furthermore, those objects are
usually per-BTS object, instead of per PDCH object.
This is a first step towards having a unified per-PDCH controller which
takes care of controlling what is scheduled and hence expected on the
uplink. Each PDCH has a UL Controller which keeps track of all reserved
uplink frame, be it SB, RRBP poll or USF assigned, all under the same
API.
As a first step, only the SBA part is fully implemented and used (being
it the easiest part to replace); TBF poll+usf will come in follow-up
patches later on. As a result, the SBAllocator per-BTS class dissappears
but some of its code is refactored/reused to provide more features to the
gprs_rlcmac_sba object, which is also further integrated into the new UL
Controller.
Related: OS#5020
Change-Id: I84b24beea4a1aa2c1528f41435f77bd16df2b947
2021-03-08 13:57:58 +00:00
|
|
|
struct gprs_rlcmac_sba *bts_alloc_sba(struct gprs_rlcmac_bts *bts, uint8_t ta);
|
|
|
|
|
|
2021-01-14 15:48:38 +00:00
|
|
|
void bts_recalc_initial_cs(struct gprs_rlcmac_bts *bts);
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void bts_recalc_initial_mcs(struct gprs_rlcmac_bts *bts);
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void bts_recalc_max_cs(struct gprs_rlcmac_bts *bts);
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void bts_recalc_max_mcs(struct gprs_rlcmac_bts *bts);
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struct GprsMs *bts_ms_by_imsi(struct gprs_rlcmac_bts *bts, const char *imsi);
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uint8_t bts_max_cs_dl(const struct gprs_rlcmac_bts *bts);
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uint8_t bts_max_cs_ul(const struct gprs_rlcmac_bts *bts);
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uint8_t bts_max_mcs_dl(const struct gprs_rlcmac_bts *bts);
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uint8_t bts_max_mcs_ul(const struct gprs_rlcmac_bts *bts);
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void bts_set_max_cs_dl(struct gprs_rlcmac_bts *bts, uint8_t cs_dl);
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void bts_set_max_cs_ul(struct gprs_rlcmac_bts *bts, uint8_t cs_ul);
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void bts_set_max_mcs_dl(struct gprs_rlcmac_bts *bts, uint8_t mcs_dl);
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void bts_set_max_mcs_ul(struct gprs_rlcmac_bts *bts, uint8_t mcs_ul);
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bool bts_cs_dl_is_supported(const struct gprs_rlcmac_bts *bts, enum CodingScheme cs);
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Introduce NACC support
A new nacc_fsm is introduced per MS object, with its partner priv
structure struct nacc_fsm_ctx, which exists and is available in the MS
object only during the duration of the NACC procedure.
The NACC context is created on an MS whenever a Pkt Cell Change
Notification is received on Uplink RLCMAC, which asks for neighbor
information of a given ARFCN+BSIC.
First, the target ARFCN+BSIC needs to be translated into a CGI-PS
(RAC+CI) address. That's done by asking the BSC through the Neighbour
Resolution Service available in osmo-bsc using the CTRL interface.
Once the CGI-PS of the target cell is known, PCU starts a RIM RAN-INFO
request against the SGSN (which will route the request as needed), and
wait for a response containing the SI bits from the target cell.
After the SI are received, the scheduler is instructed to eventually
poll a TBF for the MS originating the CCN, so that we can send the SI
encapsulated into multiple Packet Neighbor Cell Data messages on the
downlink.
One all the SI bits are sent, the scheduler is instructed to send a
Packet Cell Change Continue message.
Once the message above has been sent, the FSM autodestroys itself.
Caches are also introduced in this patch which allows for re-using
recently known translations ARFCN+BSIC -> CGI-PS and CGI-PS -> SI_INFO
respectively.
Change-Id: Id35f40d05f3e081f32fddbf1fa34cb338db452ca
2021-01-21 17:46:13 +00:00
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const struct llist_head* bts_ms_list(struct gprs_rlcmac_bts *bts);
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2021-02-09 17:47:34 +00:00
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uint8_t bts_get_ms_pwr_alpha(const struct gprs_rlcmac_bts *bts);
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2013-10-17 17:41:11 +00:00
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#ifdef __cplusplus
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}
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#endif
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