Cedric Roux
3310f5c6b0
This commit introduces an alternative RLC implementation based on 36.322 version 8. AM and UM done, TM not done. See openair2/LAYER2/rlc_v2/TODO for missing parts.
110 lines
4.2 KiB
C
110 lines
4.2 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#ifndef _RLC_PDU_H_
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#define _RLC_PDU_H_
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/**************************************************************************/
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/* RX PDU segment and segment list */
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/**************************************************************************/
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typedef struct rlc_rx_pdu_segment_t {
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int sn;
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int so;
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int size;
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int is_last;
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char *data;
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int data_offset;
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struct rlc_rx_pdu_segment_t *next;
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} rlc_rx_pdu_segment_t;
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rlc_rx_pdu_segment_t *rlc_rx_new_pdu_segment(int sn, int so, int size,
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int is_last, char *data, int data_offset);
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void rlc_rx_free_pdu_segment(rlc_rx_pdu_segment_t *pdu_segment);
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rlc_rx_pdu_segment_t *rlc_rx_pdu_segment_list_add(
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int (*sn_compare)(void *, int, int), void *sn_compare_data,
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rlc_rx_pdu_segment_t *list, rlc_rx_pdu_segment_t *pdu_segment);
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/**************************************************************************/
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/* TX PDU management */
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/**************************************************************************/
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typedef struct rlc_tx_pdu_segment_t {
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int sn;
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void *start_sdu; /* real type is rlc_sdu_t * */
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int sdu_start_byte; /* starting byte in 'start_sdu' */
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int so; /* starting byte of the segment in full PDU */
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int data_size; /* number of data bytes (exclude header) */
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int is_segment;
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int is_last;
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int retx_count;
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struct rlc_tx_pdu_segment_t *next;
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} rlc_tx_pdu_segment_t;
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rlc_tx_pdu_segment_t *rlc_tx_new_pdu(void);
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void rlc_tx_free_pdu(rlc_tx_pdu_segment_t *pdu);
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rlc_tx_pdu_segment_t *rlc_tx_pdu_list_append(rlc_tx_pdu_segment_t *list,
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rlc_tx_pdu_segment_t *pdu);
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rlc_tx_pdu_segment_t *rlc_tx_pdu_list_add(
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int (*sn_compare)(void *, int, int), void *sn_compare_data,
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rlc_tx_pdu_segment_t *list, rlc_tx_pdu_segment_t *pdu_segment);
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/**************************************************************************/
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/* PDU decoder */
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/**************************************************************************/
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typedef struct {
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int error;
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int byte; /* next byte to decode */
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int bit; /* next bit in next byte to decode */
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char *buffer;
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int size;
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} rlc_pdu_decoder_t;
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void rlc_pdu_decoder_init(rlc_pdu_decoder_t *decoder, char *buffer, int size);
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#define rlc_pdu_decoder_in_error(d) ((d)->error == 1)
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int rlc_pdu_decoder_get_bits(rlc_pdu_decoder_t *decoder, int count);
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void rlc_pdu_decoder_align(rlc_pdu_decoder_t *decoder);
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/**************************************************************************/
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/* PDU encoder */
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/**************************************************************************/
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typedef struct {
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int byte; /* next byte to encode */
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int bit; /* next bit in next byte to encode */
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char *buffer;
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int size;
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} rlc_pdu_encoder_t;
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void rlc_pdu_encoder_init(rlc_pdu_encoder_t *encoder, char *buffer, int size);
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void rlc_pdu_encoder_put_bits(rlc_pdu_encoder_t *encoder, int value, int count);
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void rlc_pdu_encoder_align(rlc_pdu_encoder_t *encoder);
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#endif /* _RLC_PDU_H_ */
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