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Adding checks on RLC AM segment NACK offsets

This commit is contained in:
Paul Sutton 2017-06-07 08:32:47 +01:00
parent 5e030dc805
commit 0e87bc7b80
1 changed files with 19 additions and 11 deletions
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30
lib/src/upper/rlc_am.cc
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@ -909,22 +909,30 @@ void rlc_am::handle_control_pdu(uint8_t *payload, uint32_t nof_bytes)
if(status.nacks[j].nack_sn == i) {
nack = true;
update_vt_a = false;
if(tx_window.end() != tx_window.find(i))
it = tx_window.find(i);
if(tx_window.end() != it)
{
if(!retx_queue_has_sn(i)) {
rlc_amd_retx_t retx;
retx.is_segment = status.nacks[j].has_so;
if(retx.is_segment) {
retx.so_start = status.nacks[j].so_start;
if(status.nacks[j].so_end == 0x7FFF) {
retx.so_end = tx_window.find(i)->second.buf->N_bytes;
}else{
retx.so_end = status.nacks[j].so_end + 1;
retx.so_start = 0;
retx.so_end = it->second.buf->N_bytes;
if(status.nacks[j].has_so) {
if(status.nacks[j].so_start < it->second.buf->N_bytes &&
status.nacks[j].so_end <= it->second.buf->N_bytes) {
retx.is_segment = true;
retx.so_start = status.nacks[j].so_start;
if(status.nacks[j].so_end == 0x7FFF) {
retx.so_end = it->second.buf->N_bytes;
}else{
retx.so_end = status.nacks[j].so_end + 1;
}
} else {
log->warning("%s invalid segment NACK received for SN %d. so_start: %d, so_end: %d, N_bytes: %d\n",
rb_id_text[lcid], i, status.nacks[j].so_start, status.nacks[j].so_end, it->second.buf->N_bytes);
}
} else {
retx.so_start = 0;
retx.so_end = tx_window.find(i)->second.buf->N_bytes;
}
retx.sn = i;
retx_queue.push_back(retx);
}