Reuse limited slow-start (RFC3742) included into tcp_cong instead
of having another implementation in High Speed TCP.
Compile tested only.
Signed-off-by: Ilpo Järvinen <[EMAIL PROTECTED]>
---
net/ipv4/tcp_highspeed.c | 24 +++---------------------
1 files changed, 3 insertions(+), 21 deletions(-)
diff --git a/net/ipv4/tcp_highspeed.c b/net/ipv4/tcp_highspeed.c
index a291097..43d624e 100644
--- a/net/ipv4/tcp_highspeed.c
+++ b/net/ipv4/tcp_highspeed.c
@@ -97,10 +97,6 @@ struct hstcp {
u32 ai;
};
-static int max_ssthresh = 100;
-module_param(max_ssthresh, int, 0644);
-MODULE_PARM_DESC(max_ssthresh, "limited slow start threshold (RFC3742)");
-
static void hstcp_init(struct sock *sk)
{
struct tcp_sock *tp = tcp_sk(sk);
@@ -122,23 +118,9 @@ static void hstcp_cong_avoid(struct sock
if (!tcp_is_cwnd_limited(sk, in_flight))
return;
- if (tp->snd_cwnd <= tp->snd_ssthresh) {
- /* RFC3742: limited slow start
- * the window is increased by 1/K MSS for each arriving ACK,
- * for K = int(cwnd/(0.5 max_ssthresh))
- */
- if (max_ssthresh > 0 && tp->snd_cwnd > max_ssthresh) {
- u32 k = max(tp->snd_cwnd / (max_ssthresh >> 1), 1U);
- if (++tp->snd_cwnd_cnt >= k) {
- if (tp->snd_cwnd < tp->snd_cwnd_clamp)
- tp->snd_cwnd++;
- tp->snd_cwnd_cnt = 0;
- }
- } else {
- if (tp->snd_cwnd < tp->snd_cwnd_clamp)
- tp->snd_cwnd++;
- }
- } else {
+ if (tp->snd_cwnd <= tp->snd_ssthresh)
+ tcp_slow_start(tp);
+ else {
/* Update AIMD parameters.
*
* We want to guarantee that:
--
1.4.2
