| /* tbf_dl_ass_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. |
| */ |
| #pragma once |
| |
| #include <osmocom/core/fsm.h> |
| #include <osmocom/core/tdef.h> |
| |
| #include <gprs_pcu.h> |
| |
| struct gprs_rlcmac_tbf; |
| struct gprs_rlcmac_pdch; |
| |
| enum tbf_dl_ass_fsm_event { |
| TBF_DL_ASS_EV_SCHED_ASS, /* Tx Uplink Assignment is pending */ |
| TBF_DL_ASS_EV_CREATE_RLCMAC_MSG, /* Scheduler wants to gen+Tx the Ass (rej): data=tbf_dl_ass_ev_create_rlcmac_msg_ctx */ |
| TBF_DL_ASS_EV_RX_ASS_CTRL_ACK, /* Received CTRL ACK answering poll set on Pkt Dl Ass */ |
| TBF_DL_ASS_EV_ASS_POLL_TIMEOUT, /* Pdch Ul Controller signals timeout for poll set on Pkt Dl Ass */ |
| }; |
| |
| enum tbf_dl_ass_fsm_states { |
| TBF_DL_ASS_NONE = 0, |
| TBF_DL_ASS_SEND_ASS, /* send downlink assignment on next RTS */ |
| TBF_DL_ASS_WAIT_ACK, /* wait for PACKET CONTROL ACK */ |
| }; |
| |
| struct tbf_dl_ass_fsm_ctx { |
| struct osmo_fsm_inst *fi; |
| struct gprs_rlcmac_tbf* tbf; /* back pointer */ |
| }; |
| |
| extern const struct osmo_tdef_state_timeout tbf_dl_ass_fsm_timeouts[32]; |
| /* Transition to a state, using the T timer defined in tbf_dl_ass_fsm_timeouts. |
| * The actual timeout value is in turn obtained from conn->T_defs. |
| * Assumes local variable fi exists. */ |
| #define tbf_dl_ass_fsm_state_chg(fi, NEXT_STATE) \ |
| osmo_tdef_fsm_inst_state_chg(fi, NEXT_STATE, \ |
| tbf_dl_ass_fsm_timeouts, \ |
| the_pcu->T_defs, \ |
| -1) |
| |
| extern struct osmo_fsm tbf_dl_ass_fsm; |
| |
| |
| /* passed as data in TBF_DL_ASS_EV_CREATE_RLCMAC_MSG */ |
| struct tbf_dl_ass_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_dl_ass_create_rlcmac_msg(const struct gprs_rlcmac_tbf *tbf, |
| const struct gprs_rlcmac_pdch *pdch, |
| uint32_t fn); |
| bool tbf_dl_ass_rts(const struct gprs_rlcmac_tbf *tbf, const struct gprs_rlcmac_pdch *pdch); |