import sys
import portus

class Reno(portus.GenericCongAvoidBase):
    def __init__(self, init_cwnd, mss):
        self.init_cwnd = init_cwnd
        self.cwnd = init_cwnd
        self.mss = mss

    def curr_cwnd(self):
        return self.cwnd

    def set_cwnd(self, cwnd):
        self.cwnd = cwnd

    def increase(self, m):
        self.cwnd += self.mss * (m.acked / self.cwnd)

    def reduction(self, m):
        self.cwnd /= 2.0
        self.cwnd = max(self.cwnd, self.init_cwnd)


portus.start("netlink", Reno, debug=True)