51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
/* Uplink TBF, 3GPP TS 44.060 */
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#pragma once
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#include <osmocom/core/fsm.h>
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#include <osmocom/gprs/rlcmac/rlcmac_private.h>
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struct gprs_rlcmac_ul_tbf;
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enum gprs_rlcmac_tbf_ul_fsm_states {
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GPRS_RLCMAC_TBF_UL_ST_NEW = 0, /* new created TBF */
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GPRS_RLCMAC_TBF_UL_ST_WAIT_ASSIGN, /* wait for Immediate Assignment */
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GPRS_RLCMAC_TBF_UL_ST_FLOW, /* RLC/MAC flow, resource needed */
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GPRS_RLCMAC_TBF_UL_ST_FINISHED, /* All data transmitted (CV=0), only retransmits and waiting for ACKs */
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GPRS_RLCMAC_TBF_UL_ST_RELEASING, /* Network sent UL ACK w/ FinalAck=1 and polled for response */
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};
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struct gprs_rlcmac_tbf_ul_fsm_ctx {
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struct osmo_fsm_inst *fi;
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union { /* back pointer. union used to easily access superclass from ctx */
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struct gprs_rlcmac_tbf *tbf;
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struct gprs_rlcmac_ul_tbf *ul_tbf;
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};
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/* Number of packet access procedure timeouts (T3164, T3166) */
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unsigned int pkt_acc_proc_attempts;
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/* 9.3.3.3.2: The block with CV=0 shall not be retransmitted more than four times. */
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unsigned int last_data_block_retrans_attempts;
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/* Whether the Received Packet UL ACK/NACK w/ FinalAck=1 had 'TBF Est' field to '1'.
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* Used during ST_RELEASING to find out if a new UL TBF can be recreated
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* when ansering the final UL ACK. */
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bool rx_final_pkt_ul_ack_nack_has_tbf_est;
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};
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enum tbf_ul_fsm_event {
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GPRS_RLCMAC_TBF_UL_EV_UL_ASS_START,
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GPRS_RLCMAC_TBF_UL_EV_UL_ASS_COMPL,
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GPRS_RLCMAC_TBF_UL_EV_FIRST_UL_DATA_SENT,
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GPRS_RLCMAC_TBF_UL_EV_N3104_MAX,
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GPRS_RLCMAC_TBF_UL_EV_CONTENTION_RESOLUTION_SUCCESS,
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GPRS_RLCMAC_TBF_UL_EV_LAST_UL_DATA_SENT,
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GPRS_RLCMAC_TBF_UL_EV_FINAL_ACK_RECVD, /* data: bool TBF_EST */
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};
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int gprs_rlcmac_tbf_ul_fsm_init(void);
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void gprs_rlcmac_tbf_ul_fsm_set_log_cat(int logcat);
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int gprs_rlcmac_tbf_ul_fsm_constructor(struct gprs_rlcmac_ul_tbf *ul_tbf);
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void gprs_rlcmac_tbf_ul_fsm_destructor(struct gprs_rlcmac_ul_tbf *ul_tbf);
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enum gprs_rlcmac_tbf_ul_fsm_states gprs_rlcmac_tbf_ul_state(const struct gprs_rlcmac_ul_tbf *ul_tbf);
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