Commit be0d935e authored by Pengcheng Yang's avatar Pengcheng Yang Committed by David S. Miller
Browse files

tcp: fix stretch ACK bugs in BIC 



Changes BIC to properly handle stretch ACKs in additive
increase mode by passing in the count of ACKed packets
to tcp_cong_avoid_ai().

Signed-off-by: default avatarPengcheng Yang <yangpc@wangsu.com>
Acked-by: default avatarNeal Cardwell <ncardwell@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 86e85bf6

net/ipv4/tcp_bic.c

+6 −5
Original line number Original line Diff line number Diff line
@@ -145,12 +145,13 @@ static void bictcp_cong_avoid(struct sock *sk, u32 ack, u32 acked) 
	if (!tcp_is_cwnd_limited(sk))

	if (!tcp_is_cwnd_limited(sk))

		return;

		return;





	if (tcp_in_slow_start(tp))

	if (tcp_in_slow_start(tp)) {

		tcp_slow_start(tp, acked);

		acked = tcp_slow_start(tp, acked);

	else {

		if (!acked)

		bictcp_update(ca, tp->snd_cwnd);

			return;

		tcp_cong_avoid_ai(tp, ca->cnt, 1);

	}

	}

	bictcp_update(ca, tp->snd_cwnd);

	tcp_cong_avoid_ai(tp, ca->cnt, acked);

}

}





/*

/*