Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq

[pandora-kernel.git] / net / ipv4 / tcp_input.c

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 738dad9..159fa3f 100644 (file)
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -89,7 +89,7 @@ int sysctl_tcp_frto;
 int sysctl_tcp_nometrics_save;
 
 int sysctl_tcp_moderate_rcvbuf = 1;
-int sysctl_tcp_abc = 1;
+int sysctl_tcp_abc;
 
 #define FLAG_DATA              0x01 /* Incoming frame contained data.          */
 #define FLAG_WIN_UPDATE                0x02 /* Incoming ACK was a window update.       */
@@ -2505,8 +2505,13 @@ static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag)
        if (before(ack, prior_snd_una))
                goto old_ack;
 
-       if (sysctl_tcp_abc && icsk->icsk_ca_state < TCP_CA_CWR)
-               tp->bytes_acked += ack - prior_snd_una;
+       if (sysctl_tcp_abc) {
+               if (icsk->icsk_ca_state < TCP_CA_CWR)
+                       tp->bytes_acked += ack - prior_snd_una;
+               else if (icsk->icsk_ca_state == TCP_CA_Loss)
+                       /* we assume just one segment left network */
+                       tp->bytes_acked += min(ack - prior_snd_una, tp->mss_cache);
+       }
 
        if (!(flag&FLAG_SLOWPATH) && after(ack, prior_snd_una)) {
                /* Window is constant, pure forward advance.
@@ -3541,7 +3546,8 @@ void tcp_cwnd_application_limited(struct sock *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 win_used = max(tp->snd_cwnd_used, 2U);
+               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;