94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/* pdch_ul_controller.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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#include <osmocom/core/linuxrbtree.h>
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#include <osmocom/core/utils.h>
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struct gprs_rlcmac_pdch;
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struct gprs_rlcmac_tbf;
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struct gprs_rlcmac_ul_tbf;
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struct gprs_rlcmac_sba;
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/* RRBP offsets, see TS 44.060 able 10.4.5.1 */
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enum rrbp_field {
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RRBP_N_plus_13 = 0x0,
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RRBP_N_plus_17_18 = 0x1,
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RRBP_N_plus_21_22 = 0x2,
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RRBP_N_plus_26 = 0x3,
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};
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struct pdch_ulc {
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struct gprs_rlcmac_pdch *pdch; /* back pointer */
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uint32_t last_fn; /* last FN rx from TDMA clock */
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struct rb_root tree_root;
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void *pool_ctx; /* talloc pool of struct pdch_ulc_node */
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};
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enum PdchUlcNode {
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PDCH_ULC_NODE_TBF_USF,
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PDCH_ULC_NODE_TBF_POLL,
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PDCH_ULC_NODE_SBA,
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};
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extern const struct value_string pdch_ul_node_names[];
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struct pdch_ulc_node {
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struct rb_node node; /*! entry in pdch_ulc->tree_root */
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uint32_t fn;
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enum PdchUlcNode type;
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union {
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struct {
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struct gprs_rlcmac_ul_tbf *ul_tbf;
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} tbf_usf;
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struct {
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struct gprs_rlcmac_tbf *poll_tbf;
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} tbf_poll;
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struct {
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struct gprs_rlcmac_sba *sba;
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} sba;
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};
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};
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struct pdch_ulc *pdch_ulc_alloc(struct gprs_rlcmac_pdch *pdch, void *ctx);
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int pdch_ulc_reserve_tbf_usf(struct pdch_ulc *ulc, uint32_t fn, struct gprs_rlcmac_ul_tbf *ul_tbf);
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int pdch_ulc_reserve_tbf_poll(struct pdch_ulc *ulc, uint32_t fn, struct gprs_rlcmac_tbf *tbf);
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int pdch_ulc_reserve_sba(struct pdch_ulc *ulc, struct gprs_rlcmac_sba *sba);
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bool pdch_ulc_fn_is_free(struct pdch_ulc *ulc, uint32_t fn);
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int pdch_ulc_get_next_free_rrbp_fn(struct pdch_ulc *ulc, uint32_t fn, uint32_t *poll_fn, unsigned int *rrbp);
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uint32_t pdch_ulc_get_next_free_fn(struct pdch_ulc *ulc, uint32_t start_fn);
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struct pdch_ulc_node *pdch_ulc_get_node(struct pdch_ulc *ulc, uint32_t fn);
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struct pdch_ulc_node *pdch_ulc_pop_node(struct pdch_ulc *ulc, uint32_t fn);
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struct gprs_rlcmac_sba *pdch_ulc_get_sba(struct pdch_ulc *ulc, uint32_t fn);
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struct gprs_rlcmac_tbf *pdch_ulc_get_tbf_poll(struct pdch_ulc *ulc, uint32_t fn);
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void pdch_ulc_release_node(struct pdch_ulc *ulc, struct pdch_ulc_node *item);
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void pdch_ulc_release_tbf(struct pdch_ulc *ulc, const struct gprs_rlcmac_tbf *tbf);
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int pdch_ulc_release_fn(struct pdch_ulc *ulc, uint32_t fn);
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void pdch_ulc_expire_fn(struct pdch_ulc *ulc, uint32_t fn);
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