From a12a601ed163578084a48708ae376805f79a1ccf Mon Sep 17 00:00:00 2001 From: Li RongQing Date: Tue, 30 Sep 2014 09:49:55 +0800 Subject: [PATCH] tcp: Change tcp_slow_start function to return void No caller uses the return value, so make this function return void. Signed-off-by: Li RongQing Signed-off-by: David S. Miller --- include/net/tcp.h | 2 +- net/ipv4/tcp_cong.c | 4 +--- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/include/net/tcp.h b/include/net/tcp.h index 545a79aa4212..ba2f9d03076b 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -830,7 +830,7 @@ void tcp_get_available_congestion_control(char *buf, size_t len); void tcp_get_allowed_congestion_control(char *buf, size_t len); int tcp_set_allowed_congestion_control(char *allowed); int tcp_set_congestion_control(struct sock *sk, const char *name); -int tcp_slow_start(struct tcp_sock *tp, u32 acked); +void tcp_slow_start(struct tcp_sock *tp, u32 acked); void tcp_cong_avoid_ai(struct tcp_sock *tp, u32 w); u32 tcp_reno_ssthresh(struct sock *sk); diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c index a6c8a5775624..b1c5970d47a1 100644 --- a/net/ipv4/tcp_cong.c +++ b/net/ipv4/tcp_cong.c @@ -291,15 +291,13 @@ int tcp_set_congestion_control(struct sock *sk, const char *name) * ABC caps N to 2. Slow start exits when cwnd grows over ssthresh and * returns the leftover acks to adjust cwnd in congestion avoidance mode. */ -int tcp_slow_start(struct tcp_sock *tp, u32 acked) +void tcp_slow_start(struct tcp_sock *tp, u32 acked) { u32 cwnd = tp->snd_cwnd + acked; if (cwnd > tp->snd_ssthresh) cwnd = tp->snd_ssthresh + 1; - acked -= cwnd - tp->snd_cwnd; tp->snd_cwnd = min(cwnd, tp->snd_cwnd_clamp); - return acked; } EXPORT_SYMBOL_GPL(tcp_slow_start); -- 2.20.1