提交 86fd14ad 编写于 作者: W Weiping Pan 提交者: David S. Miller

tcp: make tcp_cwnd_application_limited() static

Make tcp_cwnd_application_limited() static and move it from tcp_input.c to
tcp_output.c
Signed-off-by: NWeiping Pan <wpan@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 17d8ecb8
...@@ -558,7 +558,6 @@ void tcp_send_loss_probe(struct sock *sk); ...@@ -558,7 +558,6 @@ void tcp_send_loss_probe(struct sock *sk);
bool tcp_schedule_loss_probe(struct sock *sk); bool tcp_schedule_loss_probe(struct sock *sk);
/* tcp_input.c */ /* tcp_input.c */
void tcp_cwnd_application_limited(struct sock *sk);
void tcp_resume_early_retransmit(struct sock *sk); void tcp_resume_early_retransmit(struct sock *sk);
void tcp_rearm_rto(struct sock *sk); void tcp_rearm_rto(struct sock *sk);
void tcp_reset(struct sock *sk); void tcp_reset(struct sock *sk);
......
...@@ -4703,28 +4703,6 @@ static int tcp_prune_queue(struct sock *sk) ...@@ -4703,28 +4703,6 @@ static int tcp_prune_queue(struct sock *sk)
return -1; return -1;
} }
/* RFC2861, slow part. Adjust cwnd, after it was not full during one rto.
* As additional protections, we do not touch cwnd in retransmission phases,
* and if application hit its sndbuf limit recently.
*/
void tcp_cwnd_application_limited(struct sock *sk)
{
struct tcp_sock *tp = tcp_sk(sk);
if (inet_csk(sk)->icsk_ca_state == TCP_CA_Open &&
sk->sk_socket && !test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
/* Limited by application or receiver window. */
u32 init_win = tcp_init_cwnd(tp, __sk_dst_get(sk));
u32 win_used = max(tp->snd_cwnd_used, init_win);
if (win_used < tp->snd_cwnd) {
tp->snd_ssthresh = tcp_current_ssthresh(sk);
tp->snd_cwnd = (tp->snd_cwnd + win_used) >> 1;
}
tp->snd_cwnd_used = 0;
}
tp->snd_cwnd_stamp = tcp_time_stamp;
}
static bool tcp_should_expand_sndbuf(const struct sock *sk) static bool tcp_should_expand_sndbuf(const struct sock *sk)
{ {
const struct tcp_sock *tp = tcp_sk(sk); const struct tcp_sock *tp = tcp_sk(sk);
......
...@@ -1387,6 +1387,28 @@ unsigned int tcp_current_mss(struct sock *sk) ...@@ -1387,6 +1387,28 @@ unsigned int tcp_current_mss(struct sock *sk)
return mss_now; return mss_now;
} }
/* RFC2861, slow part. Adjust cwnd, after it was not full during one rto.
* As additional protections, we do not touch cwnd in retransmission phases,
* and if application hit its sndbuf limit recently.
*/
static void tcp_cwnd_application_limited(struct sock *sk)
{
struct tcp_sock *tp = tcp_sk(sk);
if (inet_csk(sk)->icsk_ca_state == TCP_CA_Open &&
sk->sk_socket && !test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
/* Limited by application or receiver window. */
u32 init_win = tcp_init_cwnd(tp, __sk_dst_get(sk));
u32 win_used = max(tp->snd_cwnd_used, init_win);
if (win_used < tp->snd_cwnd) {
tp->snd_ssthresh = tcp_current_ssthresh(sk);
tp->snd_cwnd = (tp->snd_cwnd + win_used) >> 1;
}
tp->snd_cwnd_used = 0;
}
tp->snd_cwnd_stamp = tcp_time_stamp;
}
/* Congestion window validation. (RFC2861) */ /* Congestion window validation. (RFC2861) */
static void tcp_cwnd_validate(struct sock *sk) static void tcp_cwnd_validate(struct sock *sk)
{ {
......
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