| /* gprs_rlcmac.h |
| * |
| * Copyright (C) 2012 Ivan Klyuchnikov |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| #ifndef GPRS_RLCMAC_H |
| #define GPRS_RLCMAC_H |
| |
| #include <bitvector.h> |
| #include <gsm_rlcmac.h> |
| #include <gsm_timer.h> |
| |
| extern "C" { |
| #include <osmocom/core/linuxlist.h> |
| #include <osmocom/core/timer.h> |
| } |
| |
| #define LLC_MAX_LEN 1543 |
| #define UL_RLC_DATA_BLOCK_LEN 23 |
| |
| enum gprs_rlcmac_tbf_state { |
| GPRS_RLCMAC_WAIT_DATA_SEQ_START, |
| GPRS_RLCMAC_WAIT_NEXT_DATA_BLOCK, |
| GPRS_RLCMAC_WAIT_NEXT_DATA_SEQ |
| }; |
| |
| enum gprs_rlcmac_tbf_direction { |
| GPRS_RLCMAC_DL_TBF, |
| GPRS_RLCMAC_UL_TBF |
| }; |
| |
| struct gprs_rlcmac_tbf { |
| struct llist_head list; |
| enum gprs_rlcmac_tbf_state state; |
| enum gprs_rlcmac_tbf_direction direction; |
| uint8_t tfi; |
| uint32_t tlli; |
| uint8_t rlc_data[LLC_MAX_LEN]; |
| uint16_t data_index; |
| uint8_t bsn; |
| |
| struct osmo_timer_list timer; |
| unsigned int T; /* Txxxx number */ |
| unsigned int num_T_exp; /* number of consecutive T expirations */ |
| |
| struct osmo_gsm_timer_list gsm_timer; |
| unsigned int fT; /* fTxxxx number */ |
| unsigned int num_fT_exp; /* number of consecutive fT expirations */ |
| }; |
| |
| extern struct llist_head gprs_rlcmac_tbfs; |
| |
| int tfi_alloc(); |
| |
| struct gprs_rlcmac_tbf *tbf_alloc(uint8_t tfi); |
| |
| static struct gprs_rlcmac_tbf *tbf_by_tfi(uint8_t tfi); |
| |
| static struct gprs_rlcmac_tbf *tbf_by_tlli(uint8_t tlli); |
| |
| static void tbf_free(struct gprs_rlcmac_tbf *tbf); |
| |
| /* TS 44.060 Section 10.4.7 Table 10.4.7.1: Payload Type field */ |
| enum gprs_rlcmac_block_type { |
| GPRS_RLCMAC_DATA_BLOCK = 0x0, |
| GPRS_RLCMAC_CONTROL_BLOCK = 0x1, |
| GPRS_RLCMAC_CONTROL_BLOCK_OPT = 0x2, |
| GPRS_RLCMAC_RESERVED = 0x3 |
| }; |
| |
| void gprs_rlcmac_tx_ul_ack(uint8_t tfi, uint32_t tlli, RlcMacUplinkDataBlock_t * ul_data_block); |
| |
| void gprs_rlcmac_data_block_parse(gprs_rlcmac_tbf* tbf, RlcMacUplinkDataBlock_t * ul_data_block); |
| |
| int gprs_rlcmac_rcv_data_block(bitvec *rlc_block); |
| |
| int gprs_rlcmac_rcv_control_block(bitvec *rlc_block); |
| |
| void gprs_rlcmac_rcv_block(bitvec *rlc_block); |
| |
| int gprs_rlcmac_rcv_rach(uint8_t ra, uint32_t Fn, uint16_t ta); |
| |
| void gprs_rlcmac_tx_dl_data_block(uint32_t tlli, uint8_t tfi, uint8_t *pdu, int start_index, int end_index, uint8_t bsn, uint8_t fbi); |
| |
| int gprs_rlcmac_segment_llc_pdu(struct gprs_rlcmac_tbf *tbf); |
| |
| void gprs_rlcmac_tx_ul_ud(gprs_rlcmac_tbf *tbf); |
| |
| void gprs_rlcmac_downlink_assignment(gprs_rlcmac_tbf *tbf); |
| |
| void gprs_rlcmac_packet_downlink_assignment(gprs_rlcmac_tbf *tbf); |
| |
| |
| #endif // GPRS_RLCMAC_H |