static short BWLimiterProcess(PacketNode *head, PacketNode *tail)
{
int dropped = 0;
DWORD currentTime = timeGetTime();
PacketNode *pac = tail->prev;
// pick up all packets and fill in the current time
while (pac != head)
{
if (checkDirection(pac->addr.Direction, BWLimiterInbound, BWLimiterOutbound))
{
if ( bufSizeByte >= ((DWORD)BWQueueSizeValue*1024))
{
LOG("droped with chance, direction %s",
BOUND_TEXT(pac->addr.Direction));
freeNode(popNode(pac));
++dropped;
}
else
{
insertAfter(popNode(pac), bufHead)->timestamp = timeGetTime();
++bufSize;
bufSizeByte += pac->packetLen;
pac = tail->prev;
}
}
else
{
pac = pac->prev;
}
}
while (!isBufEmpty() && canSendPacket(currentTime))
{
PacketNode *pac = bufTail->prev;
bufSizeByte -= pac->packetLen;
recordSentPacket(currentTime, pac->packetLen);
insertAfter(popNode(bufTail->prev), head);
--bufSize;
}
if (bufSize > 0)
{
LOG("Queued buffers : %d",
bufSize);
}
return (bufSize>0) || (dropped>0);
}
static short dropProcess(PacketNode *head, PacketNode* tail) {
int dropped = 0;
while (head->next != tail) {
PacketNode *pac = head->next;
// chance in range of [0, 1000]
if (checkDirection(pac->addr.Direction, dropInbound, dropOutbound)
&& calcChance(chance)) {
LOG("dropped with chance %.1f%%, direction %s",
chance/10.0, BOUND_TEXT(pac->addr.Direction));
freeNode(popNode(pac));
++dropped;
} else {
head = head->next;
}
}
return dropped > 0;
}
