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-rw-r--r--net/ipv4/tcp_input.c35
1 files changed, 8 insertions, 27 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 4cb5e6f408d..827cd4b9e86 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -234,7 +234,7 @@ static int __tcp_grow_window(const struct sock *sk, struct tcp_sock *tp,
{
/* Optimize this! */
int truesize = tcp_win_from_space(skb->truesize)/2;
- int window = tcp_full_space(sk)/2;
+ int window = tcp_win_from_space(sysctl_tcp_rmem[2])/2;
while (tp->rcv_ssthresh <= window) {
if (truesize <= skb->len)
@@ -327,37 +327,18 @@ static void tcp_init_buffer_space(struct sock *sk)
static void tcp_clamp_window(struct sock *sk, struct tcp_sock *tp)
{
struct inet_connection_sock *icsk = inet_csk(sk);
- struct sk_buff *skb;
- unsigned int app_win = tp->rcv_nxt - tp->copied_seq;
- int ofo_win = 0;
icsk->icsk_ack.quick = 0;
- skb_queue_walk(&tp->out_of_order_queue, skb) {
- ofo_win += skb->len;
- }
-
- /* If overcommit is due to out of order segments,
- * do not clamp window. Try to expand rcvbuf instead.
- */
- if (ofo_win) {
- if (sk->sk_rcvbuf < sysctl_tcp_rmem[2] &&
- !(sk->sk_userlocks & SOCK_RCVBUF_LOCK) &&
- !tcp_memory_pressure &&
- atomic_read(&tcp_memory_allocated) < sysctl_tcp_mem[0])
- sk->sk_rcvbuf = min(atomic_read(&sk->sk_rmem_alloc),
- sysctl_tcp_rmem[2]);
+ if (sk->sk_rcvbuf < sysctl_tcp_rmem[2] &&
+ !(sk->sk_userlocks & SOCK_RCVBUF_LOCK) &&
+ !tcp_memory_pressure &&
+ atomic_read(&tcp_memory_allocated) < sysctl_tcp_mem[0]) {
+ sk->sk_rcvbuf = min(atomic_read(&sk->sk_rmem_alloc),
+ sysctl_tcp_rmem[2]);
}
- if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf) {
- app_win += ofo_win;
- if (atomic_read(&sk->sk_rmem_alloc) >= 2 * sk->sk_rcvbuf)
- app_win >>= 1;
- if (app_win > icsk->icsk_ack.rcv_mss)
- app_win -= icsk->icsk_ack.rcv_mss;
- app_win = max(app_win, 2U*tp->advmss);
-
+ if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf)
tp->rcv_ssthresh = min(tp->window_clamp, 2U*tp->advmss);
- }
}
/* Receiver "autotuning" code.