Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 by Holger Hans Peter Freyther |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version 2 |
| 7 | * of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | */ |
| 18 | |
| 19 | #pragma once |
| 20 | |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame^] | 21 | #include "gprs_rlcmac.h" |
| 22 | |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 23 | #include <stdint.h> |
| 24 | |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame^] | 25 | struct gprs_rlcmac_tbf { |
| 26 | struct llist_head list; |
| 27 | enum gprs_rlcmac_tbf_state state; |
| 28 | uint32_t state_flags; |
| 29 | enum gprs_rlcmac_tbf_direction direction; |
| 30 | uint8_t tfi; |
| 31 | uint32_t tlli; |
| 32 | uint8_t tlli_valid; |
| 33 | uint8_t trx; |
| 34 | uint16_t arfcn; |
| 35 | uint8_t tsc; |
| 36 | uint8_t first_ts; /* first TS used by TBF */ |
| 37 | uint8_t first_common_ts; /* first TS that the phone can send and |
| 38 | reveive simultaniously */ |
| 39 | uint8_t control_ts; /* timeslot control messages and polling */ |
| 40 | uint8_t ms_class; |
| 41 | struct gprs_rlcmac_pdch *pdch[8]; /* list of PDCHs allocated to TBF */ |
| 42 | uint16_t ta; |
| 43 | uint8_t llc_frame[LLC_MAX_LEN]; /* current DL or UL frame */ |
| 44 | uint16_t llc_index; /* current write/read position of frame */ |
| 45 | uint16_t llc_length; /* len of current DL LLC_frame, 0 == no frame */ |
| 46 | struct llist_head llc_queue; /* queued LLC DL data */ |
| 47 | |
| 48 | enum gprs_rlcmac_tbf_dl_ass_state dl_ass_state; |
| 49 | enum gprs_rlcmac_tbf_ul_ass_state ul_ass_state; |
| 50 | enum gprs_rlcmac_tbf_ul_ack_state ul_ack_state; |
| 51 | |
| 52 | enum gprs_rlcmac_tbf_poll_state poll_state; |
| 53 | uint32_t poll_fn; /* frame number to poll */ |
| 54 | |
| 55 | uint16_t ws; /* window size */ |
| 56 | uint16_t sns; /* sequence number space */ |
| 57 | |
| 58 | /* Please note that all variables here will be reset when changing |
| 59 | * from WAIT RELEASE back to FLOW state (re-use of TBF). |
| 60 | * All states that need reset must be in this struct, so this is why |
| 61 | * variables are in both (dl and ul) structs and not outside union. |
| 62 | */ |
| 63 | union { |
| 64 | struct { |
| 65 | uint16_t bsn; /* block sequence number */ |
| 66 | uint16_t v_s; /* send state */ |
| 67 | uint16_t v_a; /* ack state */ |
| 68 | char v_b[RLC_MAX_SNS/2]; /* acknowledge state array */ |
| 69 | int32_t tx_counter; /* count all transmitted blocks */ |
| 70 | char imsi[16]; /* store IMSI for PCH retransmission */ |
| 71 | uint8_t wait_confirm; /* wait for CCCH IMM.ASS cnf */ |
| 72 | } dl; |
| 73 | struct { |
| 74 | uint16_t bsn; /* block sequence number */ |
| 75 | uint16_t v_r; /* receive state */ |
| 76 | uint16_t v_q; /* receive window state */ |
| 77 | char v_n[RLC_MAX_SNS/2]; /* receive state array */ |
| 78 | int32_t rx_counter; /* count all received blocks */ |
| 79 | uint8_t n3103; /* N3103 counter */ |
| 80 | uint8_t usf[8]; /* list USFs per PDCH (timeslot) */ |
| 81 | uint8_t contention_resolution_done; /* set after done */ |
| 82 | uint8_t final_ack_sent; /* set if we sent final ack */ |
| 83 | } ul; |
| 84 | } dir; |
| 85 | uint8_t rlc_block[RLC_MAX_SNS/2][RLC_MAX_LEN]; /* block history */ |
| 86 | uint8_t rlc_block_len[RLC_MAX_SNS/2]; /* block len of history */ |
| 87 | |
| 88 | uint8_t n3105; /* N3105 counter */ |
| 89 | |
| 90 | struct osmo_timer_list timer; |
| 91 | unsigned int T; /* Txxxx number */ |
| 92 | unsigned int num_T_exp; /* number of consecutive T expirations */ |
| 93 | |
| 94 | struct osmo_gsm_timer_list gsm_timer; |
| 95 | unsigned int fT; /* fTxxxx number */ |
| 96 | unsigned int num_fT_exp; /* number of consecutive fT expirations */ |
| 97 | |
| 98 | struct { |
| 99 | char imsi[16]; |
| 100 | |
| 101 | struct timeval dl_bw_tv; /* timestamp for dl bw calculation */ |
| 102 | uint32_t dl_bw_octets; /* number of octets since bw_tv */ |
| 103 | |
| 104 | struct timeval rssi_tv; /* timestamp for rssi calculation */ |
| 105 | int32_t rssi_sum; /* sum of rssi values */ |
| 106 | int rssi_num; /* number of rssi values added since rssi_tv */ |
| 107 | |
| 108 | struct timeval dl_loss_tv; /* timestamp for loss calculation */ |
| 109 | uint16_t dl_loss_lost; /* sum of lost packets */ |
| 110 | uint16_t dl_loss_received; /* sum of received packets */ |
| 111 | |
| 112 | } meas; |
| 113 | |
| 114 | uint8_t cs; /* current coding scheme */ |
| 115 | |
| 116 | #ifdef DEBUG_DIAGRAM |
| 117 | int diag; /* number where TBF is presented in diagram */ |
| 118 | int diag_new; /* used to format output of new TBF */ |
| 119 | #endif |
| 120 | }; |
| 121 | |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 122 | |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 123 | /* dispatch Unitdata.DL messages */ |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 124 | int tbf_handle(struct gprs_rlcmac_bts *bts, |
| 125 | const uint32_t tlli, const char *imsi, const uint8_t ms_class, |
| 126 | const uint16_t delay_csec, const uint8_t *data, const uint16_t len); |
Holger Hans Peter Freyther | 8692128 | 2013-08-24 21:26:42 +0200 | [diff] [blame] | 127 | |
| 128 | struct gprs_rlcmac_tbf *tbf_alloc_ul(struct gprs_rlcmac_bts *bts, |
| 129 | int8_t use_trx, uint8_t ms_class, |
| 130 | uint32_t tlli, uint8_t ta, struct gprs_rlcmac_tbf *dl_tbf); |