- Fix: avoid infinite loop on mulitcast read thread if no data to read

Pre-ci test passed git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4000 818b1a75-f10b-46b9-bf7c-635c3b92a50f
2013-06-25 09:05:02 +00:00
commit 56c66c09aa
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+/*******************************************************************************
+
+  Eurecom OpenAirInterface
+  Copyright(c) 1999 - 2011 Eurecom
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope 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.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information
+  Openair Admin: openair_admin@eurecom.fr
+  Openair Tech : openair_tech@eurecom.fr
+  Forums       : http://forums.eurecom.fsr/openairinterface
+  Address      : Eurecom, 2229, route des crêtes, 06560 Valbonne Sophia Antipolis, France
+
+*******************************************************************************/
+
+/*! \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
+ */
+BOOL 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
+ */
+BOOL 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
+ */
+BOOL pdcp_is_seq_num_valid(u16 seq_num, u8 seq_num_size);
+/**
+ * Returns the maximum allowed sequence number value for given size of SN field
+ * @return Max sequence number value
+ */
+u16 pdcp_calculate_max_seq_num_for_given_size(u8 seq_num_size);
+/**
+ * Returns the next TX sequence number for given PDCP entity
+ */
+u16 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
+ */
+BOOL pdcp_advance_rx_window(pdcp_t* pdcp_entity);
+/**
+ * Checks if incoming PDU has a sequence number in accordance with the RX window
+ * @return TRUE if it is valid, FALSE otherwise
+ */
+BOOL pdcp_is_rx_seq_number_valid(u16 seq_num, pdcp_t* pdcp_entity);
+/**
+* Updates missing PDU bitmap with incoming sequence number
+* @return TRUE if successful, FALSE otherwise
+*/
+BOOL pdcp_mark_current_pdu_as_received(u16 seq_num, pdcp_t* pdcp_entity);
+
+#endif