| /* pdch_ul_controller.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 <stdint.h> |
| #include <stdbool.h> |
| |
| #include <osmocom/core/linuxrbtree.h> |
| #include <osmocom/core/utils.h> |
| |
| struct gprs_rlcmac_pdch; |
| struct gprs_rlcmac_tbf; |
| struct gprs_rlcmac_ul_tbf; |
| struct gprs_rlcmac_sba; |
| |
| /* RRBP offsets, see TS 44.060 able 10.4.5.1 */ |
| enum rrbp_field { |
| RRBP_N_plus_13 = 0x0, |
| RRBP_N_plus_17_18 = 0x1, |
| RRBP_N_plus_21_22 = 0x2, |
| RRBP_N_plus_26 = 0x3, |
| }; |
| |
| struct pdch_ulc { |
| struct gprs_rlcmac_pdch *pdch; /* back pointer */ |
| uint32_t last_fn; /* last FN rx from TDMA clock */ |
| struct rb_root tree_root; |
| void *pool_ctx; /* talloc pool of struct pdch_ulc_node */ |
| }; |
| |
| enum PdchUlcNode { |
| PDCH_ULC_NODE_TBF_USF, |
| PDCH_ULC_NODE_TBF_POLL, |
| PDCH_ULC_NODE_SBA, |
| }; |
| extern const struct value_string pdch_ul_node_names[]; |
| |
| enum pdch_ulc_tbf_poll_reason { |
| PDCH_ULC_POLL_UL_ASS, /* Expect CTRL ACK for UL ASS we transmit */ |
| PDCH_ULC_POLL_DL_ASS, /* Expect CTRL ACK for DL ASS we transmit */ |
| PDCH_ULC_POLL_UL_ACK, /* Expect CTRL ACK (or PKT RES REQ on final UL ACK/NACK) for UL ACK/NACK we transmit */ |
| PDCH_ULC_POLL_DL_ACK, /* Expect DL ACK/NACK requested by RRBP */ |
| PDCH_ULC_POLL_CELL_CHG_CONTINUE, /* Expect CTRL ACK for Pkt cell Change Continue we transmit */ |
| }; |
| extern const struct value_string pdch_ulc_tbf_poll_reason_names[]; |
| |
| struct pdch_ulc_node { |
| struct rb_node node; /*! entry in pdch_ulc->tree_root */ |
| uint32_t fn; |
| enum PdchUlcNode type; |
| union { |
| struct { |
| struct gprs_rlcmac_ul_tbf *ul_tbf; |
| } tbf_usf; |
| struct { |
| struct gprs_rlcmac_tbf *poll_tbf; |
| enum pdch_ulc_tbf_poll_reason reason; |
| } tbf_poll; |
| struct { |
| struct gprs_rlcmac_sba *sba; |
| } sba; |
| }; |
| }; |
| |
| |
| struct pdch_ulc *pdch_ulc_alloc(struct gprs_rlcmac_pdch *pdch, void *ctx); |
| |
| int pdch_ulc_reserve_tbf_usf(struct pdch_ulc *ulc, uint32_t fn, struct gprs_rlcmac_ul_tbf *ul_tbf); |
| int pdch_ulc_reserve_tbf_poll(struct pdch_ulc *ulc, uint32_t fn, struct gprs_rlcmac_tbf *tbf, enum pdch_ulc_tbf_poll_reason reason); |
| int pdch_ulc_reserve_sba(struct pdch_ulc *ulc, struct gprs_rlcmac_sba *sba); |
| |
| bool pdch_ulc_fn_is_free(struct pdch_ulc *ulc, uint32_t fn); |
| |
| int pdch_ulc_get_next_free_rrbp_fn(struct pdch_ulc *ulc, uint32_t fn, uint32_t *poll_fn, unsigned int *rrbp); |
| uint32_t pdch_ulc_get_next_free_fn(struct pdch_ulc *ulc, uint32_t start_fn); |
| |
| struct pdch_ulc_node *pdch_ulc_get_node(struct pdch_ulc *ulc, uint32_t fn); |
| struct pdch_ulc_node *pdch_ulc_pop_node(struct pdch_ulc *ulc, uint32_t fn); |
| struct gprs_rlcmac_sba *pdch_ulc_get_sba(struct pdch_ulc *ulc, uint32_t fn); |
| struct gprs_rlcmac_tbf *pdch_ulc_get_tbf_poll(struct pdch_ulc *ulc, uint32_t fn); |
| |
| void pdch_ulc_release_node(struct pdch_ulc *ulc, struct pdch_ulc_node *item); |
| void pdch_ulc_release_tbf(struct pdch_ulc *ulc, const struct gprs_rlcmac_tbf *tbf); |
| int pdch_ulc_release_fn(struct pdch_ulc *ulc, uint32_t fn); |
| |
| void pdch_ulc_expire_fn(struct pdch_ulc *ulc, uint32_t fn); |