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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
*/
/*! \file pdcp_sequence_manager.h
* \brief PDCP Sequence Numbering Methods
* \author Baris Demiray
* \date 2011
*/
#ifndef PDCP_SEQUENCE_MANAGER_H
#define PDCP_SEQUENCE_MANAGER_H
#include "pdcp.h"
/**
* Initializes sequence numbering state
* @param pdcp_entity The PDCP entity to be initialized
* @return none
*/
boolean_t pdcp_init_seq_numbers(pdcp_t* pdcp_entity);
/**
* Checks if incoming PDCP entitiy pointer and relevant sequence number size is valid
* @return TRUE (0x01) if it is valid, FALSE (0x00) otherwise
*/
boolean_t pdcp_is_seq_num_size_valid(pdcp_t* pdcp_entity);
/**
* Check if SN number is in the range according to SN size
* @return TRUE if it is valid, FALSE otherwise
*/
boolean_t pdcp_is_seq_num_valid(uint16_t seq_num, uint8_t seq_num_size);
/**
* Returns the maximum allowed sequence number value for given size of SN field
* @return Max sequence number value
*/
uint16_t pdcp_calculate_max_seq_num_for_given_size(uint8_t seq_num_size);
/**
* Returns the next TX sequence number for given PDCP entity
*/
uint16_t pdcp_get_next_tx_seq_number(pdcp_t* pdcp_entity);
/**
* Advances the RX window state of given PDCP entity upon successfull receipt of a SDU
*/
boolean_t pdcp_advance_rx_window(pdcp_t* pdcp_entity);
/**
* Updates missing PDU bitmap with incoming sequence number
* @return TRUE if successful, FALSE otherwise
*/
boolean_t pdcp_mark_current_pdu_as_received(uint16_t seq_num, pdcp_t* pdcp_entity);
#endif