/*
* Fills the incoming PDU buffer with with given control PDU
*
* @param pdu_buffer The buffer that PDU will be serialized into
* @param pdu A status report header
* @return TRUE on success, FALSE otherwise
*/
boolean_t pdcp_serialize_control_pdu_for_pdcp_status_report(unsigned char* pdu_buffer, \
uint8_t bitmap[512], pdcp_control_pdu_for_pdcp_status_report* pdu)
{
if (pdu_buffer == NULL || pdu == NULL) {
return FALSE;
}
/*
* Data or Control field and PDU type (already 0x00, noop)
*
* Set leftmost bit to set this PDU as `Control PDU'
*/
util_mark_nth_bit_of_octet(((uint8_t*)&pdu_buffer[0]), 1);
/*
* Fill `First Missing PDU SN' field
*/
pdu_buffer[0] |= ((pdu->first_missing_sn >> 8) & 0xFF);
pdu_buffer[1] |= (pdu->first_missing_sn & 0xFF);
/*
* Append `bitmap'
*/
memcpy(pdu_buffer + 2, bitmap, 512);
return TRUE;
}
boolean_t pdcp_mark_current_pdu_as_received(uint16_t seq_num, pdcp_t* pdcp_entity)
{
/*
* Incoming sequence number and PDCP entity were already
* validated in pdcp_is_rx_seq_number_valid() so we don't
* check here
*/
/*
* Find relevant octet
*/
uint16_t octet_index = seq_num / 8;
/*
* Set relevant bit
*/
#if 0
LOG_D(PDCP, "Marking %d. bit of %d. octet of status bitmap\n", (seq_num % 8) + 1, octet_index);
#endif
util_mark_nth_bit_of_octet(&pdcp_entity->missing_pdu_bitmap[octet_index], seq_num % 8);
#if 0
util_print_binary_representation((uint8_t*)"Current state of relevant octet: ", pdcp_entity->missing_pdu_bitmap[octet_index]);
#endif
return TRUE;
}
