diff options
Diffstat (limited to 'net/ipv4/tcp_cong.c')
| -rw-r--r-- | net/ipv4/tcp_cong.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c index 272a84593c85..4d4db16e336e 100644 --- a/net/ipv4/tcp_cong.c +++ b/net/ipv4/tcp_cong.c @@ -280,19 +280,19 @@ int tcp_set_congestion_control(struct sock *sk, const char *name) /* RFC2861 Check whether we are limited by application or congestion window * This is the inverse of cwnd check in tcp_tso_should_defer */ -int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight) +bool tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight) { const struct tcp_sock *tp = tcp_sk(sk); u32 left; if (in_flight >= tp->snd_cwnd) - return 1; + return true; left = tp->snd_cwnd - in_flight; if (sk_can_gso(sk) && left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd && left * tp->mss_cache < sk->sk_gso_max_size) - return 1; + return true; return left <= tcp_max_tso_deferred_mss(tp); } EXPORT_SYMBOL_GPL(tcp_is_cwnd_limited); @@ -307,6 +307,7 @@ EXPORT_SYMBOL_GPL(tcp_is_cwnd_limited); void tcp_slow_start(struct tcp_sock *tp) { int cnt; /* increase in packets */ + unsigned int delta = 0; /* RFC3465: ABC Slow start * Increase only after a full MSS of bytes is acked @@ -333,9 +334,9 @@ void tcp_slow_start(struct tcp_sock *tp) tp->snd_cwnd_cnt += cnt; while (tp->snd_cwnd_cnt >= tp->snd_cwnd) { tp->snd_cwnd_cnt -= tp->snd_cwnd; - if (tp->snd_cwnd < tp->snd_cwnd_clamp) - tp->snd_cwnd++; + delta++; } + tp->snd_cwnd = min(tp->snd_cwnd + delta, tp->snd_cwnd_clamp); } EXPORT_SYMBOL_GPL(tcp_slow_start); |