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RLC AM fix for PDU Segment insertion in case of gaps

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This commit is contained in:
gabrielC
2017-03-07 18:33:14 +01:00
parent b5ab7267c2
commit ce1ac08b19
1 changed files with 14 additions and 3 deletions
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openair2/LAYER2/RLC/AM_v9.3.0/rlc_am_rx_list.c
+14 -3
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@@ -320,9 +320,20 @@ rlc_am_rx_pdu_status_t rlc_am_rx_list_handle_pdu_segment(
// First case : cursor_p is NULL or its SN is different from the received one, it means the SN is received for the first time
// Insert PDU after previous_cursor_p
if ((cursor_p == NULL) || (pdu_info_cursor_p->sn != pdu_rx_info_p->sn)) {
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[PROCESS RX PDU SEGMENT] STORE FIRST PDU SEGMENT FOR SN=%d\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),pdu_rx_info_p->sn);
list2_insert_after_element(tb_pP, previous_cursor_p, &rlc_pP->receiver_buffer);
rlc_usn_t sn_prev = pdu_info_previous_cursor_p->sn;
if (RLC_AM_DIFF_SN(sn_prev,rlc_pP->vr_r) < RLC_AM_DIFF_SN(pdu_rx_info_p->sn,rlc_pP->vr_r)) {
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[PROCESS RX PDU SEGMENT SN=%d] PDU SEGMENT INSERTED AFTER PDU SN=%d\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),pdu_rx_info_p->sn,
sn_prev);
list2_insert_after_element(tb_pP, previous_cursor_p, &rlc_pP->receiver_buffer);
}
else { /* SN of head of Rx PDU list is higher than received PDU SN */
LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[PROCESS RX PDU SEGMENT SN=%d] PDU SEGMENT INSERTED BEFORE PDU SN=%d\n",
PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP),pdu_rx_info_p->sn,
pdu_info_cursor_p->sn);
list2_insert_before_element(tb_pP, cursor_p, &rlc_pP->receiver_buffer);
}
return RLC_AM_DATA_PDU_STATUS_OK;
}