150 lines
4.7 KiB
C++
150 lines
4.7 KiB
C++
/*
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* Copyright (C) 2013 by Holger Hans Peter Freyther
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* Copyright (C) 2019 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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#pragma once
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#ifdef __cplusplus
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#include <stdbool.h>
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#include "tbf.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <tbf_ul_ack_fsm.h>
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#ifdef __cplusplus
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}
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#endif
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/*
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* TBF instance
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*/
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enum tbf_gprs_ul_counters {
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TBF_CTR_GPRS_UL_CS1,
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TBF_CTR_GPRS_UL_CS2,
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TBF_CTR_GPRS_UL_CS3,
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TBF_CTR_GPRS_UL_CS4,
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};
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enum tbf_egprs_ul_counters {
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TBF_CTR_EGPRS_UL_MCS1,
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TBF_CTR_EGPRS_UL_MCS2,
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TBF_CTR_EGPRS_UL_MCS3,
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TBF_CTR_EGPRS_UL_MCS4,
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TBF_CTR_EGPRS_UL_MCS5,
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TBF_CTR_EGPRS_UL_MCS6,
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TBF_CTR_EGPRS_UL_MCS7,
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TBF_CTR_EGPRS_UL_MCS8,
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TBF_CTR_EGPRS_UL_MCS9,
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};
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/* Used in ul_tbf->m_usf[] to flag unassigned USF on a given TS: */
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#define USF_INVALID 0xFF
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struct gprs_rlcmac_ul_tbf : public gprs_rlcmac_tbf {
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gprs_rlcmac_ul_tbf(struct gprs_rlcmac_bts *bts, GprsMs *ms);
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~gprs_rlcmac_ul_tbf();
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gprs_rlc_window *window();
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/* blocks were acked */
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int rcv_data_block_acknowledged(
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const struct gprs_rlc_data_info *rlc,
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uint8_t *data, struct pcu_l1_meas *meas);
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/* TODO: extract LLC class? */
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int assemble_forward_llc(const gprs_rlc_data *data);
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int snd_ul_ud();
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egprs_rlc_ul_reseg_bsn_state handle_egprs_ul_spb(
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const struct gprs_rlc_data_info *rlc,
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struct gprs_rlc_data *block,
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uint8_t *data, const uint8_t block_idx);
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egprs_rlc_ul_reseg_bsn_state handle_egprs_ul_first_seg(
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const struct gprs_rlc_data_info *rlc,
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struct gprs_rlc_data *block,
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uint8_t *data, const uint8_t block_idx);
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egprs_rlc_ul_reseg_bsn_state handle_egprs_ul_second_seg(
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const struct gprs_rlc_data_info *rlc,
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struct gprs_rlc_data *block,
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uint8_t *data, const uint8_t block_idx);
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uint16_t window_size() const;
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void set_window_size();
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void update_coding_scheme_counter_ul(enum CodingScheme cs);
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void usf_timeout();
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void contention_resolution_start();
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void contention_resolution_success();
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/* Please note that all variables here will be reset when changing
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* from WAIT RELEASE back to FLOW state (re-use of TBF).
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* All states that need reset must be in this struct, so this is why
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* variables are in both (dl and ul) structs and not outside union.
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*/
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int32_t m_rx_counter; /* count all received blocks */
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uint8_t m_usf[8]; /* list USFs per PDCH (timeslot), initialized to USF_INVALID */
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uint8_t m_contention_resolution_done; /* set after done */
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struct rate_ctr_group *m_ul_gprs_ctrs;
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struct rate_ctr_group *m_ul_egprs_ctrs;
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struct tbf_ul_ass_fsm_ctx ul_ack_fsm;
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protected:
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void maybe_schedule_uplink_acknack(const gprs_rlc_data_info *rlc, bool countdown_finished);
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/* Please note that all variables below will be reset when changing
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* from WAIT RELEASE back to FLOW state (re-use of TBF).
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* All states that need reset must be in this struct, so this is why
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* variables are in both (dl and ul) structs and not outside union.
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*/
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gprs_rlc_ul_window m_window;
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};
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inline uint16_t gprs_rlcmac_ul_tbf::window_size() const
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{
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return m_window.ws();
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}
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struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_tbf(struct gprs_rlcmac_bts *bts, GprsMs *ms, int8_t use_trx, bool single_slot);
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struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_pacch(struct gprs_rlcmac_bts *bts, GprsMs *ms, int8_t use_trx);
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struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_ccch(struct gprs_rlcmac_bts *bts, struct GprsMs *ms);
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struct gprs_rlcmac_ul_tbf *handle_tbf_reject(struct gprs_rlcmac_bts *bts,
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GprsMs *ms, uint8_t trx_no, uint8_t ts_no);
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#else /* ifdef __cplusplus */
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struct gprs_rlcmac_ul_tbf;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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void update_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, int8_t ta_delta);
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void set_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, uint8_t ta);
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struct gprs_rlcmac_ul_tbf *as_ul_tbf(struct gprs_rlcmac_tbf *tbf);
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void tbf_usf_timeout(struct gprs_rlcmac_ul_tbf *tbf);
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bool ul_tbf_contention_resolution_done(const struct gprs_rlcmac_ul_tbf *tbf);
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struct osmo_fsm_inst *tbf_ul_ack_fi(const struct gprs_rlcmac_ul_tbf *tbf);
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void ul_tbf_contention_resolution_success(struct gprs_rlcmac_ul_tbf *tbf);
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#define LOGPTBFUL(tbf, level, fmt, args...) LOGP(DTBFUL, level, "%s " fmt, tbf_name(tbf), ## args)
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#ifdef __cplusplus
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}
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#endif
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