/* tbf_ul_ack_fsm.h * * Copyright (C) 2021 by sysmocom - s.f.m.c. GmbH * Author: Pau Espin Pedrol * * 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. */ #pragma once #include #include #include struct gprs_rlcmac_tbf; struct gprs_rlcmac_ul_tbf; struct gprs_rlcmac_pdch; enum tbf_ul_ack_fsm_event { TBF_UL_ACK_EV_SCHED_ACK, /* Tx UL ACK/NACK is pending */ TBF_UL_ACK_EV_CREATE_RLCMAC_MSG, /* Scheduler wants to gen+Tx the Ass (rej): data=tbf_ul_ack_ev_create_rlcmac_msg_ctx */ TBF_UL_ACK_EV_RX_CTRL_ACK, /* Received CTRL ACK answering poll set on UL ACK/NACK */ TBF_UL_ACK_EV_POLL_TIMEOUT, /* Pdch Ul Controller signals timeout for poll set on UL ACK/NACK */ }; enum tbf_ul_ack_fsm_states { TBF_UL_ACK_ST_NONE = 0, TBF_UL_ACK_ST_SCHED_UL_ACK, /* send UL ACK/NACK on next RTS */ TBF_UL_ACK_ST_WAIT_ACK, /* wait for PACKET CONTROL ACK */ }; struct tbf_ul_ack_fsm_ctx { struct osmo_fsm_inst *fi; struct gprs_rlcmac_ul_tbf *tbf; /* back pointer */ }; extern struct osmo_fsm tbf_ul_ack_fsm; /* passed as data in TBF_UL_ACK_EV_CREATE_RLCMAC_MSG */ struct tbf_ul_ack_ev_create_rlcmac_msg_ctx { const struct gprs_rlcmac_pdch *pdch; /* TS where the created DL ctrl block is to be sent */ uint32_t fn; /* FN where the created DL ctrl block is to be sent */ struct msgb *msg; /* to be filled by FSM during event processing */ }; struct msgb *tbf_ul_ack_create_rlcmac_msg(const struct gprs_rlcmac_ul_tbf *ul_tbf, const struct gprs_rlcmac_pdch *pdch, uint32_t fn); bool tbf_ul_ack_rts(const struct gprs_rlcmac_ul_tbf *ul_tbf, const struct gprs_rlcmac_pdch *pdch); bool tbf_ul_ack_waiting_cnf_final_ack(const struct gprs_rlcmac_ul_tbf *ul_tbf); bool tbf_ul_ack_exp_ctrl_ack(const struct gprs_rlcmac_ul_tbf *ul_tbf, uint32_t fn, uint8_t ts);