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authorIlpo Järvinen <ilpo.jarvinen@helsinki.fi>2007-05-03 13:28:35 -0700
committerDavid S. Miller <davem@davemloft.net>2007-05-03 13:28:35 -0700
commit03fba0479600114f32d29eee74ca3eaa364606bf (patch)
tree855d3bed8b4e825e93837bb4090e18e47a09a273 /net
parent72fbaeb623971c321112de7fe3fa4e24e12ca59e (diff)
downloadlinux-stericsson-03fba0479600114f32d29eee74ca3eaa364606bf.tar.gz
[TCP] Highspeed: Limited slow-start is nowadays in tcp_slow_start
Reuse limited slow-start (RFC3742) included into tcp_cong instead of having another implementation in High Speed TCP. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/tcp_highspeed.c24
1 files changed, 3 insertions, 21 deletions
diff --git a/net/ipv4/tcp_highspeed.c b/net/ipv4/tcp_highspeed.c
index a291097fcc0a..43d624e5043c 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 *sk, u32 adk, u32 rtt,
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: