| /* tbf_ul_ack_fsm.h |
| * |
| * Copyright (C) 2021 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de> |
| * Author: Pau Espin Pedrol <pespin@sysmocom.de> |
| * |
| * 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. |
| */ |
| #pragma once |
| |
| #include <osmocom/core/fsm.h> |
| #include <osmocom/core/tdef.h> |
| |
| #include <gprs_pcu.h> |
| |
| struct gprs_rlcmac_tbf; |
| struct gprs_rlcmac_ul_tbf; |
| |
| 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 const struct osmo_tdef_state_timeout tbf_ul_ack_fsm_timeouts[32]; |
| /* Transition to a state, using the T timer defined in tbf_ul_ack_fsm_timeouts. |
| * The actual timeout value is in turn obtained from conn->T_defs. |
| * Assumes local variable fi exists. */ |
| #define tbf_ul_ack_fsm_state_chg(fi, NEXT_STATE) \ |
| osmo_tdef_fsm_inst_state_chg(fi, NEXT_STATE, \ |
| tbf_ul_ack_fsm_timeouts, \ |
| the_pcu->T_defs, \ |
| -1) |
| |
| 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 { |
| uint32_t fn; /* FN where the created DL ctrl block is to be sent */ |
| uint8_t ts; /* TS 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_tbf *tbf, uint32_t fn, uint8_t ts); |
| bool tbf_ul_ack_rts(const struct gprs_rlcmac_tbf *tbf); |
| bool tbf_ul_ack_waiting_cnf_final_ack(const struct gprs_rlcmac_tbf *tbf); |
| bool tbf_ul_ack_exp_ctrl_ack(const struct gprs_rlcmac_tbf *tbf, uint32_t fn, uint8_t ts); |