88c9bb192d
only be checked if the system is currently performing New Reno style fast recovery. However, this value was being checked regardless of the NR state, with the end result being that the congestion window was never opened. Change the logic to check t_dupack instead; the only code path that allows it to be nonzero at this point is NewReno, so if it is nonzero, we are in fast recovery mode and should not touch the congestion window. Tested by: phk