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ns3-datacenter
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update rttqcn rand generator

This commit is contained in:
Yupeng Chen 2024-04-27 20:58:13 +08:00
parent d87237bed8
commit 6c9414926c
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1 changed files with 4 additions and 1 deletions
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5
simulator/ns-3.39/src/point-to-point/model/rdma-hw.cc
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@ -2135,6 +2135,9 @@ void
RdmaHw::HandleAckRttQcn(Ptr<RdmaQueuePair> qp, Ptr<Packet> p, CustomHeader& ch) const
{
uint64_t rtt = Simulator::Now().GetTimeStep() - ch.ack.ih.GetTs();
std::random_device rd;
std::mt19937 gen(rd());
std::uniform_int_distribution<> distr(0, 1000);
bool ecn = false;
if (rtt <= rtt_qcn_tmin)
{
@ -2143,7 +2146,7 @@ RdmaHw::HandleAckRttQcn(Ptr<RdmaQueuePair> qp, Ptr<Packet> p, CustomHeader& ch)
else if (rtt <= rtt_qcn_tmax)
{
auto thresh = (rtt - rtt_qcn_tmin) * 1000.0 / (rtt_qcn_tmax - rtt_qcn_tmin);
auto rand_num = rand() % 1000;
auto rand_num = distr(gen);
ecn = rand_num < thresh;
}
else