From 099535a1a7118d195d91584d05659e7ee936e422 Mon Sep 17 00:00:00 2001 From: Holger Hans Peter Freyther Date: Wed, 16 Oct 2013 17:42:31 +0200 Subject: tbf: Move the struct to the tbf.h header file This is the begin of a long march of turning tbf into a C++ class and properly hiding the secrets inside this implementation instead of having it spread across various different files. --- src/tbf.h | 100 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 99 insertions(+), 1 deletion(-) (limited to 'src/tbf.h') diff --git a/src/tbf.h b/src/tbf.h index 330eac1d..a6dfced6 100644 --- a/src/tbf.h +++ b/src/tbf.h @@ -18,9 +18,107 @@ #pragma once +#include "gprs_rlcmac.h" + #include -struct gprs_rlcmac_bts; +struct gprs_rlcmac_tbf { + struct llist_head list; + enum gprs_rlcmac_tbf_state state; + uint32_t state_flags; + enum gprs_rlcmac_tbf_direction direction; + uint8_t tfi; + uint32_t tlli; + uint8_t tlli_valid; + uint8_t trx; + uint16_t arfcn; + uint8_t tsc; + uint8_t first_ts; /* first TS used by TBF */ + uint8_t first_common_ts; /* first TS that the phone can send and + reveive simultaniously */ + uint8_t control_ts; /* timeslot control messages and polling */ + uint8_t ms_class; + struct gprs_rlcmac_pdch *pdch[8]; /* list of PDCHs allocated to TBF */ + uint16_t ta; + uint8_t llc_frame[LLC_MAX_LEN]; /* current DL or UL frame */ + uint16_t llc_index; /* current write/read position of frame */ + uint16_t llc_length; /* len of current DL LLC_frame, 0 == no frame */ + struct llist_head llc_queue; /* queued LLC DL data */ + + enum gprs_rlcmac_tbf_dl_ass_state dl_ass_state; + enum gprs_rlcmac_tbf_ul_ass_state ul_ass_state; + enum gprs_rlcmac_tbf_ul_ack_state ul_ack_state; + + enum gprs_rlcmac_tbf_poll_state poll_state; + uint32_t poll_fn; /* frame number to poll */ + + uint16_t ws; /* window size */ + uint16_t sns; /* sequence number space */ + + /* Please note that all variables here will be reset when changing + * from WAIT RELEASE back to FLOW state (re-use of TBF). + * All states that need reset must be in this struct, so this is why + * variables are in both (dl and ul) structs and not outside union. + */ + union { + struct { + uint16_t bsn; /* block sequence number */ + uint16_t v_s; /* send state */ + uint16_t v_a; /* ack state */ + char v_b[RLC_MAX_SNS/2]; /* acknowledge state array */ + int32_t tx_counter; /* count all transmitted blocks */ + char imsi[16]; /* store IMSI for PCH retransmission */ + uint8_t wait_confirm; /* wait for CCCH IMM.ASS cnf */ + } dl; + struct { + uint16_t bsn; /* block sequence number */ + uint16_t v_r; /* receive state */ + uint16_t v_q; /* receive window state */ + char v_n[RLC_MAX_SNS/2]; /* receive state array */ + int32_t rx_counter; /* count all received blocks */ + uint8_t n3103; /* N3103 counter */ + uint8_t usf[8]; /* list USFs per PDCH (timeslot) */ + uint8_t contention_resolution_done; /* set after done */ + uint8_t final_ack_sent; /* set if we sent final ack */ + } ul; + } dir; + uint8_t rlc_block[RLC_MAX_SNS/2][RLC_MAX_LEN]; /* block history */ + uint8_t rlc_block_len[RLC_MAX_SNS/2]; /* block len of history */ + + uint8_t n3105; /* N3105 counter */ + + 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 */ + + struct { + char imsi[16]; + + struct timeval dl_bw_tv; /* timestamp for dl bw calculation */ + uint32_t dl_bw_octets; /* number of octets since bw_tv */ + + struct timeval rssi_tv; /* timestamp for rssi calculation */ + int32_t rssi_sum; /* sum of rssi values */ + int rssi_num; /* number of rssi values added since rssi_tv */ + + struct timeval dl_loss_tv; /* timestamp for loss calculation */ + uint16_t dl_loss_lost; /* sum of lost packets */ + uint16_t dl_loss_received; /* sum of received packets */ + + } meas; + + uint8_t cs; /* current coding scheme */ + +#ifdef DEBUG_DIAGRAM + int diag; /* number where TBF is presented in diagram */ + int diag_new; /* used to format output of new TBF */ +#endif +}; + /* dispatch Unitdata.DL messages */ int tbf_handle(struct gprs_rlcmac_bts *bts, -- cgit v1.2.3