Pau Espin Pedrol | 9d1cdb1 | 2019-09-25 17:47:02 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 by Holger Hans Peter Freyther |
| 3 | * Copyright (C) 2019 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License |
| 7 | * as published by the Free Software Foundation; either version 2 |
| 8 | * of the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 18 | */ |
| 19 | |
| 20 | #pragma once |
| 21 | |
| 22 | #ifdef __cplusplus |
| 23 | |
| 24 | #include "tbf.h" |
| 25 | /* |
| 26 | * TBF instance |
| 27 | */ |
| 28 | |
| 29 | enum tbf_gprs_ul_counters { |
| 30 | TBF_CTR_GPRS_UL_CS1, |
| 31 | TBF_CTR_GPRS_UL_CS2, |
| 32 | TBF_CTR_GPRS_UL_CS3, |
| 33 | TBF_CTR_GPRS_UL_CS4, |
| 34 | }; |
| 35 | |
| 36 | enum tbf_egprs_ul_counters { |
| 37 | TBF_CTR_EGPRS_UL_MCS1, |
| 38 | TBF_CTR_EGPRS_UL_MCS2, |
| 39 | TBF_CTR_EGPRS_UL_MCS3, |
| 40 | TBF_CTR_EGPRS_UL_MCS4, |
| 41 | TBF_CTR_EGPRS_UL_MCS5, |
| 42 | TBF_CTR_EGPRS_UL_MCS6, |
| 43 | TBF_CTR_EGPRS_UL_MCS7, |
| 44 | TBF_CTR_EGPRS_UL_MCS8, |
| 45 | TBF_CTR_EGPRS_UL_MCS9, |
| 46 | }; |
| 47 | |
| 48 | #define LOGPTBFUL(tbf, level, fmt, args...) LOGP(DTBFUL, level, "%s " fmt, tbf_name(tbf), ## args) |
| 49 | |
| 50 | struct gprs_rlcmac_ul_tbf : public gprs_rlcmac_tbf { |
| 51 | gprs_rlcmac_ul_tbf(BTS *bts); |
| 52 | gprs_rlc_ul_window *window(); |
| 53 | struct msgb *create_ul_ack(uint32_t fn, uint8_t ts); |
| 54 | bool ctrl_ack_to_toggle(); |
| 55 | bool handle_ctrl_ack(); |
| 56 | void enable_egprs(); |
| 57 | /* blocks were acked */ |
| 58 | int rcv_data_block_acknowledged( |
| 59 | const struct gprs_rlc_data_info *rlc, |
| 60 | uint8_t *data, struct pcu_l1_meas *meas); |
| 61 | |
| 62 | |
| 63 | /* TODO: extract LLC class? */ |
| 64 | int assemble_forward_llc(const gprs_rlc_data *data); |
| 65 | int snd_ul_ud(); |
| 66 | |
| 67 | egprs_rlc_ul_reseg_bsn_state handle_egprs_ul_spb( |
| 68 | const struct gprs_rlc_data_info *rlc, |
| 69 | struct gprs_rlc_data *block, |
| 70 | uint8_t *data, const uint8_t block_idx); |
| 71 | |
| 72 | egprs_rlc_ul_reseg_bsn_state handle_egprs_ul_first_seg( |
| 73 | const struct gprs_rlc_data_info *rlc, |
| 74 | struct gprs_rlc_data *block, |
| 75 | uint8_t *data, const uint8_t block_idx); |
| 76 | |
| 77 | egprs_rlc_ul_reseg_bsn_state handle_egprs_ul_second_seg( |
| 78 | const struct gprs_rlc_data_info *rlc, |
| 79 | struct gprs_rlc_data *block, |
| 80 | uint8_t *data, const uint8_t block_idx); |
| 81 | |
| 82 | uint16_t window_size() const; |
| 83 | void set_window_size(); |
| 84 | void update_coding_scheme_counter_ul(enum CodingScheme cs); |
| 85 | |
| 86 | /* Please note that all variables here will be reset when changing |
| 87 | * from WAIT RELEASE back to FLOW state (re-use of TBF). |
| 88 | * All states that need reset must be in this struct, so this is why |
| 89 | * variables are in both (dl and ul) structs and not outside union. |
| 90 | */ |
| 91 | int32_t m_rx_counter; /* count all received blocks */ |
| 92 | uint8_t m_usf[8]; /* list USFs per PDCH (timeslot) */ |
| 93 | uint8_t m_contention_resolution_done; /* set after done */ |
| 94 | uint8_t m_final_ack_sent; /* set if we sent final ack */ |
| 95 | |
| 96 | struct rate_ctr_group *m_ul_gprs_ctrs; |
| 97 | struct rate_ctr_group *m_ul_egprs_ctrs; |
| 98 | |
| 99 | protected: |
| 100 | void maybe_schedule_uplink_acknack(const gprs_rlc_data_info *rlc); |
| 101 | |
| 102 | /* Please note that all variables below will be reset when changing |
| 103 | * from WAIT RELEASE back to FLOW state (re-use of TBF). |
| 104 | * All states that need reset must be in this struct, so this is why |
| 105 | * variables are in both (dl and ul) structs and not outside union. |
| 106 | */ |
| 107 | gprs_rlc_ul_window m_window; |
| 108 | }; |
| 109 | |
| 110 | #ifdef __cplusplus |
| 111 | extern "C" { |
| 112 | #endif |
| 113 | void update_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, int8_t ta_delta); |
| 114 | void set_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, uint8_t ta); |
| 115 | #ifdef __cplusplus |
| 116 | } |
| 117 | #endif |
| 118 | |
| 119 | inline uint16_t gprs_rlcmac_ul_tbf::window_size() const |
| 120 | { |
| 121 | return m_window.ws(); |
| 122 | } |
| 123 | |
| 124 | inline void gprs_rlcmac_ul_tbf::enable_egprs() |
| 125 | { |
| 126 | m_window.set_sns(RLC_EGPRS_SNS); |
| 127 | gprs_rlcmac_tbf::enable_egprs(); |
| 128 | } |
| 129 | |
| 130 | inline gprs_rlcmac_ul_tbf *as_ul_tbf(gprs_rlcmac_tbf *tbf) |
| 131 | { |
| 132 | if (tbf && tbf->direction == GPRS_RLCMAC_UL_TBF) |
| 133 | return static_cast<gprs_rlcmac_ul_tbf *>(tbf); |
| 134 | else |
| 135 | return NULL; |
| 136 | } |
| 137 | |
| 138 | #endif |