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Commit aeb63a58 authored by Cedric Roux's avatar Cedric Roux
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cleanup: remove a file that should not be here

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openair2/LAYER2/RLC/AM_v9.3.0/#rlc_am_receiver.c# deleted 100644 → 0
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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
*/
#define RLC_AM_MODULE 1
#define RLC_AM_RECEIVER_C 1
#include "platform_types.h"
//-----------------------------------------------------------------------------
#include "assertions.h"
#include "msc.h"
#include "rlc.h"
#include "rlc_am.h"
#include "list.h"
#include "LAYER2/MAC/mac_extern.h"
#include "common/utils/LOG/log.h"
//-----------------------------------------------------------------------------
signed int
rlc_am_get_data_pdu_infos(
const protocol_ctxt_t* const ctxt_pP,
const rlc_am_entity_t* const rlc_pP,
rlc_am_pdu_sn_10_t* header_pP,
int16_t total_sizeP,
rlc_am_pdu_info_t* pdu_info_pP)
{
memset(pdu_info_pP, 0, sizeof (rlc_am_pdu_info_t));
int16_t sum_li = 0;
pdu_info_pP->d_c = header_pP->b1 >> 7;
pdu_info_pP->num_li = 0;
//Assertion(eNB)_PRAN_DesignDocument_annex No.766
if(pdu_info_pP->d_c == 0)
{
LOG_E(RLC, "RLC AM Rx PDU Data D/C Header Error LcId=%d\n", rlc_pP->channel_id);
return -2;
}
/*
AssertFatal (pdu_info_pP->d_c != 0, "RLC AM Rx PDU Data D/C Header Error LcId=%d\n", rlc_pP->channel_id);
*/
pdu_info_pP->rf = (header_pP->b1 >> 6) & 0x01;
pdu_info_pP->p = (header_pP->b1 >> 5) & 0x01;
pdu_info_pP->fi = (header_pP->b1 >> 3) & 0x03;
pdu_info_pP->e = (header_pP->b1 >> 2) & 0x01;
pdu_info_pP->sn = header_pP->b2 + (((uint16_t)(header_pP->b1 & 0x03)) << 8);
pdu_info_pP->header_size = 2;
if (pdu_info_pP->rf) {
pdu_info_pP->lsf = (header_pP->data[0] >> 7) & 0x01;
pdu_info_pP->so = header_pP->data[1] + (((uint16_t)(header_pP->data[0] & 0x7F)) << 8);
pdu_info_pP->payload = &header_pP->data[2];
pdu_info_pP->header_size += 2;
} else {
pdu_info_pP->payload = &header_pP->data[0];
}
if (pdu_info_pP->e) {
rlc_am_e_li_t *e_li;
unsigned int li_length_in_bytes = 1;
unsigned int li_to_read = 1;
if (pdu_info_pP->rf) {
e_li = (rlc_am_e_li_t*)(&header_pP->data[2]);
} else {
e_li = (rlc_am_e_li_t*)(header_pP->data);
}
while (li_to_read) {
li_length_in_bytes = li_length_in_bytes ^ 3;
if (li_length_in_bytes == 2) {
pdu_info_pP->li_list[pdu_info_pP->num_li] = ((uint16_t)(e_li->b1 << 4)) & 0x07F0;
pdu_info_pP->li_list[pdu_info_pP->num_li] |= (((uint8_t)(e_li->b2 >> 4)) & 0x000F);
li_to_read = e_li->b1 & 0x80;
pdu_info_pP->header_size += 2;
} else {
pdu_info_pP->li_list[pdu_info_pP->num_li] = ((uint16_t)(e_li->b2 << 8)) & 0x0700;
pdu_info_pP->li_list[pdu_info_pP->num_li] |= e_li->b3;
li_to_read = e_li->b2 & 0x08;
e_li++;
pdu_info_pP->header_size += 1;
}
sum_li += pdu_info_pP->li_list[pdu_info_pP->num_li];
pdu_info_pP->num_li = pdu_info_pP->num_li + 1;
if (pdu_info_pP->num_li > RLC_AM_MAX_SDU_IN_PDU) {
LOG_E(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[GET PDU INFO] SN %04d TOO MANY LIs ",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),
pdu_info_pP->sn);
return -2;
}
}
if (li_length_in_bytes == 2) {
pdu_info_pP->payload = &e_li->b3;
} else {
pdu_info_pP->payload = &e_li->b1;
}
}
pdu_info_pP->payload_size = total_sizeP - pdu_info_pP->header_size;
if (pdu_info_pP->payload_size > sum_li) {
pdu_info_pP->hidden_size = pdu_info_pP->payload_size - sum_li;
}
return 0;
}
//-----------------------------------------------------------------------------
void
rlc_am_display_data_pdu_infos(
const protocol_ctxt_t* const ctxt_pP,
rlc_am_entity_t * const rlc_pP,
rlc_am_pdu_info_t* pdu_info_pP)
{
int num_li;
if (pdu_info_pP->d_c) {
if (pdu_info_pP->rf) {
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[DISPLAY DATA PDU] RX DATA PDU SN %04d FI %1d SO %05d LSF %01d POLL %1d ",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),
pdu_info_pP->sn,
pdu_info_pP->fi,
pdu_info_pP->so,
pdu_info_pP->lsf, pdu_info_pP->p);
} else {
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[DISPLAY DATA PDU] RX DATA PDU SN %04d FI %1d POLL %1d ",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),
pdu_info_pP->sn,
pdu_info_pP->fi,
pdu_info_pP->p);
}
for (num_li = 0; num_li < pdu_info_pP->num_li; num_li++) {
LOG_D(RLC, "LI %05d ", pdu_info_pP->li_list[num_li]);
}
if (pdu_info_pP->hidden_size > 0) {
LOG_D(RLC, "hidden size %05d ", pdu_info_pP->hidden_size);
}
LOG_D(RLC, "\n");
} else {
LOG_E(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[DISPLAY DATA PDU] ERROR RX CONTROL PDU\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP));
}
}
// assumed the sn of the tb_p is equal to VR(MS)
//-----------------------------------------------------------------------------
void
rlc_am_rx_update_vr_ms(
const protocol_ctxt_t* const ctxt_pP,
rlc_am_entity_t * const rlc_pP,
mem_block_t* tb_pP)
{
//rlc_am_pdu_info_t* pdu_info_p = &((rlc_am_rx_pdu_management_t*)(tb_pP->data))->pdu_info;
rlc_am_pdu_info_t* pdu_info_cursor_p = NULL;
mem_block_t* cursor_p;
cursor_p = tb_pP;
if (cursor_p) {
do {
pdu_info_cursor_p = &((rlc_am_rx_pdu_management_t*)(cursor_p->data))->pdu_info;
if ((((rlc_am_rx_pdu_management_t*)(cursor_p->data))->all_segments_received == 0) ||
(rlc_pP->vr_ms != pdu_info_cursor_p->sn)) {
#if TRACE_RLC_AM_RX
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[UPDATE VR(MS)] UPDATED VR(MS) %04d -> %04d\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),
rlc_pP->vr_ms, pdu_info_cursor_p->sn);
#endif
return;
}
rlc_pP->vr_ms = RLC_AM_NEXT_SN(pdu_info_cursor_p->sn);
cursor_p = cursor_p->next;
} while ((cursor_p != NULL) && (rlc_pP->vr_ms != rlc_pP->vr_h));
}
}
// assumed the sn of the tb_p is equal to VR(R)
//-----------------------------------------------------------------------------
void
rlc_am_rx_update_vr_r(
const protocol_ctxt_t* const ctxt_pP,
rlc_am_entity_t * const rlc_pP,
mem_block_t* tb_pP)
{
rlc_am_pdu_info_t* pdu_info_cursor_p = NULL;
mem_block_t* cursor_p;
cursor_p = tb_pP;
if (cursor_p) {
do {
pdu_info_cursor_p = &((rlc_am_rx_pdu_management_t*)(cursor_p->data))->pdu_info;
if ((((rlc_am_rx_pdu_management_t*)(cursor_p->data))->all_segments_received == 0) ||
(rlc_pP->vr_r != pdu_info_cursor_p->sn)) {
return;
}
#if TRACE_RLC_AM_RX
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[UPDATE VR(R)] UPDATED VR(R) %04d -> %04d\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),
rlc_pP->vr_r,
(pdu_info_cursor_p->sn + 1) & RLC_AM_SN_MASK);
#endif
if (((rlc_am_rx_pdu_management_t*)(cursor_p->data))->pdu_info.rf == 1) {
if (((rlc_am_rx_pdu_management_t*)(cursor_p->data))->pdu_info.lsf == 1) {
rlc_pP->vr_r = (rlc_pP->vr_r + 1) & RLC_AM_SN_MASK;
}
} else {
rlc_pP->vr_r = (rlc_pP->vr_r + 1) & RLC_AM_SN_MASK;
}
cursor_p = cursor_p->next;
} while (cursor_p != NULL);
//rlc_pP->vr_r = (pdu_info_cursor_p->sn + 1) & RLC_AM_SN_MASK;
}
}
//-----------------------------------------------------------------------------
void
rlc_am_receive_routing (
const protocol_ctxt_t* const ctxt_pP,
rlc_am_entity_t * const rlc_pP,
struct mac_data_ind data_indP)
{
mem_block_t *tb_p = NULL;
uint8_t *first_byte_p = NULL;
sdu_size_t tb_size_in_bytes;
RLC_AM_MUTEX_LOCK(&rlc_pP->lock_input_sdus, ctxt_pP, rlc_pP);
while ((tb_p = list_remove_head (&data_indP.data))) {
first_byte_p = ((struct mac_tb_ind *) (tb_p->data))->data_ptr;
tb_size_in_bytes = ((struct mac_tb_ind *) (tb_p->data))->size;
if (tb_size_in_bytes > 0) {
if ((*first_byte_p & 0x80) == 0x80) {
rlc_pP->stat_rx_data_bytes += tb_size_in_bytes;
rlc_pP->stat_rx_data_pdu += 1;
rlc_am_receive_process_data_pdu (ctxt_pP, rlc_pP, tb_p, first_byte_p, tb_size_in_bytes);
} else {
rlc_pP->stat_rx_control_bytes += tb_size_in_bytes;
rlc_pP->stat_rx_control_pdu += 1;
rlc_am_receive_process_control_pdu (ctxt_pP, rlc_pP, tb_p, &first_byte_p, &tb_size_in_bytes);
// Test if remaining bytes not processed (up to know, highest probability is bug in MAC)
//Assertion(eNB)_PRAN_DesignDocument_annex No.767
if(tb_size_in_bytes != 0)
{
LOG_E(RLC, "Remaining %d bytes following a control PDU\n",
tb_size_in_bytes);
}
/*
AssertFatal( tb_size_in_bytes == 0,
"Remaining %d bytes following a control PDU",
tb_size_in_bytes);
*/
}
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[RX ROUTING] VR(R)=%03d VR(MR)=%03d\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),
rlc_pP->vr_r,
rlc_pP->vr_mr);
}
} // end while
RLC_AM_MUTEX_UNLOCK(&rlc_pP->lock_input_sdus);
}
//-----------------------------------------------------------------------------
void
rlc_am_receive_process_data_pdu (
const protocol_ctxt_t* const ctxt_pP,
rlc_am_entity_t * const rlc_pP,
mem_block_t* tb_pP,
uint8_t* first_byte_pP,
uint16_t tb_size_in_bytesP)
{
// 5.1.3.2 Receive operations
// 5.1.3.2.1 General
// The receiving side of an AM RLC entity shall maintain a receiving window according to state variables VR(R) and
// VR(MR) as follows:
// - a SN falls within the receiving window if VR(R) <= SN < VR(MR);
// - a SN falls outside of the receiving window otherwise.
//
// When receiving a RLC data PDU from lower layer, the receiving side of an AM RLC entity shall:
// - either discard the received RLC data PDU or place it in the reception buffer (see sub clause 5.1.3.2.2);
// - if the received RLC data PDU was placed in the reception buffer:
// - update state variables, reassemble and deliver RLC SDUs to upper layer and start/stop t-Reordering as
// needed (see sub clause 5.1.3.2.3).
// When t-Reordering expires, the receiving side of an AM RLC entity shall:
// - update state variables and start t-Reordering as needed (see sub clause 5.1.3.2.4).
// 5.1.3.2.2 Actions when a RLC data PDU is received from lower layer
// When a RLC data PDU is received from lower layer, where the RLC data PDU contains byte segment numbers y to z of
// an AMD PDU with SN = x, the receiving side of an AM RLC entity shall:
// - if x falls outside of the receiving window; or
// - if byte segment numbers y to z of the AMD PDU with SN = x have been received before:
// - discard the received RLC data PDU;
// - else:
// - place the received RLC data PDU in the reception buffer;
// - if some byte segments of the AMD PDU contained in the RLC data PDU have been received before:
// - discard the duplicate byte segments.
rlc_am_pdu_info_t* pdu_info_p = &((rlc_am_rx_pdu_management_t*)(tb_pP->data))->pdu_info;
rlc_am_pdu_sn_10_t* rlc_am_pdu_sn_10_p = (rlc_am_pdu_sn_10_t*)first_byte_pP;
rlc_am_rx_pdu_status_t pdu_status = RLC_AM_DATA_PDU_STATUS_OK;
boolean_t reassemble = false;
if (rlc_am_get_data_pdu_infos(ctxt_pP,rlc_pP, rlc_am_pdu_sn_10_p, tb_size_in_bytesP, pdu_info_p) >= 0) {
((rlc_am_rx_pdu_management_t*)(tb_pP->data))->all_segments_received = 0;
if (RLC_AM_SN_IN_WINDOW(pdu_info_p->sn, rlc_pP->vr_r)) {
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[PROCESS RX PDU SN=%04d] VR(R) %04d VR(H) %04d VR(MR) %04d VR(MS) %04d VR(X) %04d\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),
pdu_info_p->sn,
rlc_pP->vr_r,
rlc_pP->vr_h,
rlc_pP->vr_mr,
rlc_pP->vr_ms,
rlc_pP->vr_x);
pdu_status = rlc_am_rx_list_check_duplicate_insert_pdu(ctxt_pP, rlc_pP,tb_pP);
if (pdu_status != RLC_AM_DATA_PDU_STATUS_OK) {
rlc_pP->stat_rx_data_pdu_dropped += 1;
rlc_pP->stat_rx_data_bytes_dropped += tb_size_in_bytesP;
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[PROCESS RX PDU] PDU DISCARDED CAUSE=%d SN=%d\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),pdu_status,pdu_info_p->sn);
#if RLC_STOP_ON_LOST_PDU
AssertFatal( 0 == 1,
PROTOCOL_RLC_AM_CTXT_FMT" LOST PDU DETECTED\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP));
#endif
} else {
// 5.1.3.2.3
// Actions when a RLC data PDU is placed in the reception buffer
//
// When a RLC data PDU with SN = x is placed in the reception buffer, the receiving side of an AM RLC entity shall:
// - if x >= VR(H)
// - update VR(H) to x+ 1;
//
// - if all byte segments of the AMD PDU with SN = VR(MS) are received:
// - update VR(MS) to the SN of the first AMD PDU with SN > current VR(MS) for which not all byte segments
// have been received;
//
// - if x = VR(R):
// - if all byte segments of the AMD PDU with SN = VR(R) are received:
// - update VR(R) to the SN of the first AMD PDU with SN > current VR(R) for which not all byte segments
// have been received;
// - update VR(MR) to the updated VR(R) + AM_Window_Size;
//
// - reassemble RLC SDUs from any byte segments of AMD PDUs with SN that falls outside of the receiving
// window and in-sequence byte segments of the AMD PDU with SN = VR(R), remove RLC headers when
// doing so and deliver the reassembled RLC SDUs to upper layer in sequence if not delivered before;
//
// - if t-Reordering is running:
// - if VR(X) = VR(R); or
// - if VR(X) falls outside of the receiving window and VR(X) is not equal to VR(MR):
// - stop and reset t-Reordering;
//
// - if t-Reordering is not running (includes the case t-Reordering is stopped due to actions above):
// - if VR (H) > VR(R):
// - start t-Reordering;
// - set VR(X) to VR(H).
#if TRACE_RLC_AM_RX
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[PROCESS RX PDU] RX LIST AFTER INSERTION:\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP));
rlc_am_rx_list_display(rlc_pP, "rlc_am_receive_process_data_pdu AFTER INSERTION ");
#endif
/* 1) Update vrH if sn >= vrH */
if (RLC_AM_DIFF_SN(pdu_info_p->sn,rlc_pP->vr_r) >= RLC_AM_DIFF_SN(rlc_pP->vr_h,rlc_pP->vr_r))
{
rlc_pP->vr_h = RLC_AM_NEXT_SN(pdu_info_p->sn);
}
rlc_am_rx_check_all_byte_segments(ctxt_pP, rlc_pP, tb_pP);
/* 2) Reordering Window Processing: Update vr_ms if sn = vr_ms and all bytes received for sn */
if ((pdu_info_p->sn == rlc_pP->vr_ms) && (((rlc_am_rx_pdu_management_t*)(tb_pP->data))->all_segments_received)) {
rlc_am_rx_update_vr_ms(ctxt_pP, rlc_pP, tb_pP);
}
if (pdu_info_p->sn == rlc_pP->vr_r) {
mem_block_t* cursor_p = rlc_pP->receiver_buffer.head;
rlc_am_rx_pdu_management_t * pdu_cursor_mgnt_p = (rlc_am_rx_pdu_management_t *) (cursor_p->data);
if( (((rlc_am_rx_pdu_management_t*)(tb_pP->data))->all_segments_received) == (pdu_cursor_mgnt_p->all_segments_received)){
if (((rlc_am_rx_pdu_management_t*)(tb_pP->data))->all_segments_received) {
rlc_am_rx_update_vr_r(ctxt_pP, rlc_pP, tb_pP);
rlc_pP->vr_mr = (rlc_pP->vr_r + RLC_AM_WINDOW_SIZE) & RLC_AM_SN_MASK;
}
reassemble = rlc_am_rx_check_vr_reassemble(ctxt_pP, rlc_pP);
//TODO : optimization : check whether a reassembly is needed by looking at LI, FI, SO, etc...
}else{
LOG_E(RLC, "BAD all_segments_received!!! discard buffer!!!\n");
/* Discard received block if out of window, duplicate or header error */
free_mem_block (tb_pP, __func__);
}
}
//FNA: fix check VrX out of receiving window
if ((rlc_pP->t_reordering.running) || ((rlc_pP->t_reordering.ms_duration == 0) && (rlc_pP->vr_x != RLC_SN_UNDEFINED))) {
if ((rlc_pP->vr_x == rlc_pP->vr_r) || (!(RLC_AM_SN_IN_WINDOW(rlc_pP->vr_x, rlc_pP->vr_r)) && (rlc_pP->vr_x != rlc_pP->vr_mr))) {
rlc_am_stop_and_reset_timer_reordering(ctxt_pP, rlc_pP);
rlc_pP->vr_x = RLC_SN_UNDEFINED;
}
}
if (!(rlc_pP->t_reordering.running)) {
if (rlc_pP->vr_h != rlc_pP->vr_r) { // - if VR (H) > VR(R) translated to - if VR (H) != VR(R)
rlc_pP->vr_x = rlc_pP->vr_h;
if (rlc_pP->t_reordering.ms_duration != 0) {
rlc_am_start_timer_reordering(ctxt_pP, rlc_pP);
}
else {
/* specific case for no timer reordering configured */
/* reordering window directly advances with vrH */
rlc_pP->vr_ms = rlc_pP->vr_h;
/* Trigger a Status and clear any existing Delay Flag */
RLC_AM_SET_STATUS(rlc_pP->status_requested,RLC_AM_STATUS_TRIGGERED_T_REORDERING);
RLC_AM_CLEAR_STATUS(rlc_pP->status_requested,RLC_AM_STATUS_TRIGGERED_DELAYED);
rlc_pP->sn_status_triggered_delayed = RLC_SN_UNDEFINED;
}
}
}
}
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[PROCESS RX PDU SN=%04d] NEW VR(R) %04d VR(H) %04d VR(MS) %04d VR(MR) %04d VR(X) %04d reassemble=%d\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),
pdu_info_p->sn,
rlc_pP->vr_r,
rlc_pP->vr_h,
rlc_pP->vr_ms,
rlc_pP->vr_mr,
rlc_pP->vr_x,
reassemble);
} else {
rlc_pP->stat_rx_data_pdu_out_of_window += 1;
rlc_pP->stat_rx_data_bytes_out_of_window += tb_size_in_bytesP;
pdu_status = RLC_AM_DATA_PDU_STATUS_SN_OUTSIDE_WINDOW;
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[PROCESS RX PDU] PDU OUT OF RX WINDOW, DISCARDED, SN=%d\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),pdu_info_p->sn);
}
/* 3) Check for triggering a Tx Status PDU if a poll is received or if a pending status was delayed */
if ((pdu_info_p->p) && (pdu_status < RLC_AM_DATA_PDU_STATUS_BUFFER_FULL)) {
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[PROCESS RX PDU] POLL BIT SET, STATUS REQUESTED:\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP));
/* Polling Info Saving for In and Out of Window PDU */
/* avoid multi status trigger */
if ((RLC_AM_GET_STATUS(rlc_pP->status_requested,RLC_AM_STATUS_TRIGGERED_DELAYED)) ||
!(RLC_AM_GET_STATUS(rlc_pP->status_requested,(RLC_AM_STATUS_TRIGGERED_POLL | RLC_AM_STATUS_TRIGGERED_T_REORDERING))))
{
RLC_AM_SET_STATUS(rlc_pP->status_requested,RLC_AM_STATUS_TRIGGERED_POLL);
if ((pdu_status != RLC_AM_DATA_PDU_STATUS_OK) || ((pdu_status == RLC_AM_DATA_PDU_STATUS_OK) &&
(!(RLC_AM_SN_IN_WINDOW(pdu_info_p->sn,rlc_pP->vr_r)) ||
(RLC_AM_DIFF_SN(pdu_info_p->sn,rlc_pP->vr_r) < RLC_AM_DIFF_SN(rlc_pP->vr_ms,rlc_pP->vr_r)))
)
)
{
/* Conditions are met for sending a Status Report */
/* Then clear Delay Flag and reset its corresponding sn */
RLC_AM_CLEAR_STATUS(rlc_pP->status_requested,RLC_AM_STATUS_TRIGGERED_DELAYED);
rlc_pP->sn_status_triggered_delayed = RLC_SN_UNDEFINED;
}
else if (rlc_pP->sn_status_triggered_delayed == RLC_SN_UNDEFINED)
{
/* Delay status trigger if pdustatus OK and sn>= vr_ms */
/* Note: vr_r and vr_ms have been updated */
RLC_AM_SET_STATUS(rlc_pP->status_requested,RLC_AM_STATUS_TRIGGERED_DELAYED);
rlc_pP->sn_status_triggered_delayed = pdu_info_p->sn;
}
}
}
/* ReEnable a previously delayed Status Trigger if PDU discarded or */
/* sn no more in RxWindow due to RxWindow advance or sn < vr_ms */
if ((RLC_AM_GET_STATUS(rlc_pP->status_requested,RLC_AM_STATUS_TRIGGERED_DELAYED)) &&
(pdu_status == RLC_AM_DATA_PDU_STATUS_OK) &&
(!(RLC_AM_SN_IN_WINDOW(rlc_pP->sn_status_triggered_delayed,rlc_pP->vr_r)) ||
(RLC_AM_DIFF_SN(rlc_pP->sn_status_triggered_delayed,rlc_pP->vr_r) < RLC_AM_DIFF_SN(rlc_pP->vr_ms,rlc_pP->vr_r)))
)
{
RLC_AM_CLEAR_STATUS(rlc_pP->status_requested,RLC_AM_STATUS_TRIGGERED_DELAYED);
rlc_pP->sn_status_triggered_delayed = RLC_SN_UNDEFINED;
}
} else {
pdu_status = RLC_AM_DATA_PDU_STATUS_HEADER_ERROR;
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[PROCESS RX PDU] PDU DISCARDED BAD HEADER FORMAT SN=%d\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),pdu_info_p->sn);
}
if (pdu_status != RLC_AM_DATA_PDU_STATUS_OK) {
/* Discard received block if out of window, duplicate or header error */
free_mem_block (tb_pP, __func__);
}
else if (reassemble) {
/* Reassemble SDUs */
rlc_am_rx_list_reassemble_rlc_sdus(ctxt_pP, rlc_pP);
}
}
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