tcp: properly handle stretch acks in slow start

[karo-tx-linux.git] / net / ipv4 / tcp_scalable.c

diff --git a/net/ipv4/tcp_scalable.c b/net/ipv4/tcp_scalable.c
index 8ce55b8aaec8476e3b8292ddd7bf10c98ac402b2..19ea6c2951f3b35a29a9ddc04f8578f7abe3f87c 100644 (file)
--- a/net/ipv4/tcp_scalable.c
+++ b/net/ipv4/tcp_scalable.c
@@ -15,7 +15,8 @@
 #define TCP_SCALABLE_AI_CNT    50U
 #define TCP_SCALABLE_MD_SCALE  3
 
-static void tcp_scalable_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
+static void tcp_scalable_cong_avoid(struct sock *sk, u32 ack, u32 acked,
+                                   u32 in_flight)
 {
        struct tcp_sock *tp = tcp_sk(sk);
 
@@ -23,7 +24,7 @@ static void tcp_scalable_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
                return;
 
        if (tp->snd_cwnd <= tp->snd_ssthresh)
-               tcp_slow_start(tp);
+               tcp_slow_start(tp, acked);
        else
                tcp_cong_avoid_ai(tp, min(tp->snd_cwnd, TCP_SCALABLE_AI_CNT));
 }