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