/* * 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