354 lines
10 KiB
C
354 lines
10 KiB
C
/* 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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* Copyright (C) 2021 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de
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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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#include <pdch.h>
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/core/rate_ctr.h>
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#include <osmocom/core/stat_item.h>
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#include <osmocom/core/tdef.h>
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#include <osmocom/gprs/gprs_ns2.h>
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#include <osmocom/gsm/l1sap.h>
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#include <osmocom/gsm/protocol/gsm_04_08.h>
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#include <osmocom/gsm/gsm48_rest_octets.h>
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#include <osmocom/gsm/gsm48.h>
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#include "mslot_class.h"
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#include "gsm_rlcmac.h"
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#include "gprs_pcu.h"
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#ifdef __cplusplus
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}
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#endif
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#include "tbf.h"
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#include "coding_scheme.h"
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struct GprsMs;
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struct gprs_rlcmac_bts;
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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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/* back pointers */
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struct gprs_rlcmac_bts *bts;
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uint8_t trx_no;
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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void bts_trx_init(struct gprs_rlcmac_trx *trx, struct gprs_rlcmac_bts *bts, uint8_t trx_no);
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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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void bts_trx_free_all_tbf(struct gprs_rlcmac_trx *trx);
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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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#ifdef __cplusplus
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}
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#endif
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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,
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CTR_TBF_ALLOC_FAIL,
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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,
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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,
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CTR_RACH_REQUESTS,
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CTR_11BIT_RACH_REQUESTS,
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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,
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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,
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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,
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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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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,
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CTR_EGPRS_DL_MCS8,
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CTR_EGPRS_DL_MCS9,
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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,
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CTR_EGPRS_UL_MCS5,
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CTR_EGPRS_UL_MCS6,
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CTR_EGPRS_UL_MCS7,
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CTR_EGPRS_UL_MCS8,
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CTR_EGPRS_UL_MCS9,
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};
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enum {
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STAT_MS_PRESENT,
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};
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/* RACH.ind parameters (to be parsed) */
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struct rach_ind_params {
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enum ph_burst_type burst_type;
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bool is_11bit;
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uint16_t ra;
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uint8_t trx_nr;
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uint8_t ts_nr;
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uint32_t rfn;
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int16_t qta;
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};
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/* [EGPRS Packet] Channel Request parameters (parsed) */
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struct chan_req_params {
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unsigned int egprs_mslot_class;
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unsigned int priority;
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bool single_block;
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};
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struct GprsMsStorage;
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struct pcu_l1_meas;
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/**
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* I represent a GSM BTS. I have one or more TRX, I know the current
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* GSM time and I have controllers that help with allocating resources
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* on my TRXs.
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*/
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struct gprs_rlcmac_bts {
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uint8_t nr; /* bts_nr */
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struct llist_head list; /* queued in pcu->bts_list */
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bool active;
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struct osmo_cell_global_id_ps cgi_ps;
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uint8_t bsic;
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uint8_t cs_mask; /* Allowed CS mask from BTS */
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uint16_t mcs_mask; /* Allowed MCS mask from BTS */
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struct { /* information stored from last received PCUIF info_ind message */
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uint8_t initial_cs;
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uint8_t initial_mcs;
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} pcuif_info_ind;
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uint8_t initial_cs_dl, initial_cs_ul;
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uint8_t initial_mcs_dl, initial_mcs_ul;
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/* Timer defintions */
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struct osmo_tdef *T_defs_bts; /* timers controlled by BTS, received through PCUIF */
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uint8_t n3101;
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uint8_t n3103;
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uint8_t n3105;
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struct gprs_rlcmac_trx trx[8];
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uint8_t si1[GSM_MACBLOCK_LEN];
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bool si1_is_set;
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uint8_t si3[GSM_MACBLOCK_LEN];
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bool si3_is_set;
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uint8_t si13[GSM_MACBLOCK_LEN];
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struct osmo_gsm48_si13_info si31_ro_decoded;
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bool si13_is_set;
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/* State for dynamic algorithm selection */
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int multislot_disabled;
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/* Packet Application Information (3GPP TS 44.060 11.2.47, usually ETWS primary message). We don't need to store
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* more than one message, because they get sent so rarely. */
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struct msgb *app_info;
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uint32_t app_info_pending; /* Count of MS with active TBF, to which we did not send app_info yet */
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/* main nsei */
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struct gprs_ns2_nse *nse;
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/* back pointer to PCU object */
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struct gprs_pcu *pcu;
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uint32_t cur_fn;
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int cur_blk_fn;
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uint8_t max_cs_dl, max_cs_ul;
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uint8_t max_mcs_dl, max_mcs_ul;
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struct rate_ctr_group *ratectrs;
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struct osmo_stat_item_group *statg;
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struct GprsMsStorage *ms_store;
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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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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct GprsMs *bts_alloc_ms(struct gprs_rlcmac_bts *bts, uint8_t ms_class, uint8_t egprs_ms_class);
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int bts_add_paging(struct gprs_rlcmac_bts *bts, uint8_t chan_needed, const struct osmo_mobile_identity *mi);
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uint32_t bts_rfn_to_fn(const struct gprs_rlcmac_bts *bts, int32_t rfn);
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struct gprs_rlcmac_dl_tbf *bts_dl_tbf_by_tfi(struct gprs_rlcmac_bts *bts, uint8_t tfi, uint8_t trx, uint8_t ts);
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struct gprs_rlcmac_ul_tbf *bts_ul_tbf_by_tfi(struct gprs_rlcmac_bts *bts, uint8_t tfi, uint8_t trx, uint8_t ts);
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void bts_snd_dl_ass(struct gprs_rlcmac_bts *bts, struct gprs_rlcmac_tbf *tbf, uint16_t pgroup);
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void bts_set_current_frame_number(struct gprs_rlcmac_bts *bts, uint32_t frame_number);
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void bts_set_current_block_frame_number(struct gprs_rlcmac_bts *bts, int frame_number);
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static inline uint32_t bts_current_frame_number(const struct gprs_rlcmac_bts *bts)
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{
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return bts->cur_fn;
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}
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int bts_tfi_find_free(const struct gprs_rlcmac_bts *bts, enum gprs_rlcmac_tbf_direction dir,
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uint8_t *_trx, int8_t use_trx);
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int bts_rcv_rach(struct gprs_rlcmac_bts *bts, const struct rach_ind_params *rip);
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int bts_rcv_ptcch_rach(struct gprs_rlcmac_bts *bts, const struct rach_ind_params *rip);
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int bts_rcv_imm_ass_cnf(struct gprs_rlcmac_bts *bts, const uint8_t *data, uint32_t fn);
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void bts_send_gsmtap(struct gprs_rlcmac_bts *bts,
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enum pcu_gsmtap_category categ, bool uplink, uint8_t trx_no,
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uint8_t ts_no, uint8_t channel, uint32_t fn,
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const uint8_t *data, unsigned int len);
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void bts_send_gsmtap_meas(struct gprs_rlcmac_bts *bts,
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enum pcu_gsmtap_category categ, bool uplink, uint8_t trx_no,
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uint8_t ts_no, uint8_t channel, uint32_t fn,
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const uint8_t *data, unsigned int len, struct pcu_l1_meas *meas);
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void bts_send_gsmtap_rach(struct gprs_rlcmac_bts *bts,
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enum pcu_gsmtap_category categ, uint8_t channel,
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const struct rach_ind_params *rip);
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struct GprsMsStorage *bts_ms_store(const struct gprs_rlcmac_bts *bts);
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struct GprsMs *bts_ms_by_tlli(struct gprs_rlcmac_bts *bts, uint32_t tlli, uint32_t old_tlli);
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static inline struct rate_ctr_group *bts_rate_counters(struct gprs_rlcmac_bts *bts)
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{
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return bts->ratectrs;
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}
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static inline struct osmo_stat_item_group *bts_stat_items(struct gprs_rlcmac_bts *bts)
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{
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return bts->statg;
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}
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static inline void bts_do_rate_ctr_inc(const struct gprs_rlcmac_bts *bts, unsigned int ctr_id) {
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rate_ctr_inc(&bts->ratectrs->ctr[ctr_id]);
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}
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static inline void bts_do_rate_ctr_add(const struct gprs_rlcmac_bts *bts, unsigned int ctr_id, int inc) {
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rate_ctr_add(&bts->ratectrs->ctr[ctr_id], inc);
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}
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static inline void bts_stat_item_add(struct gprs_rlcmac_bts *bts, unsigned int stat_id, int inc) {
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int32_t val = osmo_stat_item_get_last(bts->statg->items[stat_id]);
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osmo_stat_item_set(bts->statg->items[stat_id], val + inc);
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}
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struct gprs_rlcmac_bts *bts_alloc(struct gprs_pcu *pcu, uint8_t bts_nr);
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struct gprs_rlcmac_sba *bts_alloc_sba(struct gprs_rlcmac_bts *bts, uint8_t ta);
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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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const struct llist_head* bts_ms_list(struct gprs_rlcmac_bts *bts);
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uint8_t bts_get_ms_pwr_alpha(const struct gprs_rlcmac_bts *bts);
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#ifdef __cplusplus
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}
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#endif
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