69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
/* tbf_ul_ass_fsm.h
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*
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* Copyright (C) 2021 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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* Author: Pau Espin Pedrol <pespin@sysmocom.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#pragma once
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#include <osmocom/core/fsm.h>
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#include <osmocom/core/tdef.h>
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#include <gprs_pcu.h>
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struct gprs_rlcmac_tbf;
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enum tbf_ul_ass_fsm_event {
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TBF_UL_ASS_EV_SCHED_ASS, /* Tx Uplink Assignment is pending */
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TBF_UL_ASS_EV_SCHED_ASS_REJ, /* Tx Uplink Assignment is pending */
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TBF_UL_ASS_EV_CREATE_RLCMAC_MSG, /* Scheduler wants to gen+Tx the Ass (rej): data=tbf_ul_ass_ev_create_rlcmac_msg_ctx */
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TBF_UL_ASS_EV_RX_ASS_CTRL_ACK, /* Received CTRL ACK answering poll set on Pkt Ul Ass */
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TBF_UL_ASS_EV_ASS_POLL_TIMEOUT, /* Pdch Ul Controller signals timeout for poll set on Pkt Ul Ass */
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TBF_UL_ASS_EV_ABORT, /* TBF is starting to be RELEASED, drop in progress assignment */
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};
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enum tbf_ul_ass_fsm_states {
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TBF_UL_ASS_NONE = 0,
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TBF_UL_ASS_SEND_ASS, /* send uplink assignment on next RTS */
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TBF_UL_ASS_SEND_ASS_REJ, /* send assignment reject next RTS */
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TBF_UL_ASS_WAIT_ACK, /* wait for PACKET CONTROL ACK */
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};
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struct tbf_ul_ass_fsm_ctx {
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struct osmo_fsm_inst *fi;
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struct gprs_rlcmac_tbf* tbf; /* back pointer */
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};
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extern const struct osmo_tdef_state_timeout tbf_ul_ass_fsm_timeouts[32];
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/* Transition to a state, using the T timer defined in tbf_ul_ass_fsm_timeouts.
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* The actual timeout value is in turn obtained from conn->T_defs.
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* Assumes local variable fi exists. */
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#define tbf_ul_ass_fsm_state_chg(fi, NEXT_STATE) \
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osmo_tdef_fsm_inst_state_chg(fi, NEXT_STATE, \
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tbf_ul_ass_fsm_timeouts, \
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the_pcu->T_defs, \
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-1)
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extern struct osmo_fsm tbf_ul_ass_fsm;
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/* passed as data in TBF_UL_ASS_EV_CREATE_RLCMAC_MSG */
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struct tbf_ul_ass_ev_create_rlcmac_msg_ctx {
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uint32_t fn; /* FN where the created DL ctrl block is to be sent */
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uint8_t ts; /* TS where the created DL ctrl block is to be sent */
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struct msgb *msg; /* to be filled by FSM during event processing */
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};
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struct msgb *tbf_ul_ass_create_rlcmac_msg(const struct gprs_rlcmac_tbf* tbf, uint32_t fn, uint8_t ts);
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bool tbf_ul_ass_rts(const struct gprs_rlcmac_tbf* tbf);
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