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| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2007-05-03 13:28:35 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-05-03 13:28:35 -0700 |
| commit | 03fba0479600114f32d29eee74ca3eaa364606bf (patch) | |
| tree | 855d3bed8b4e825e93837bb4090e18e47a09a273 /net/ipv4/tcp_highspeed.c | |
| parent | 72fbaeb623971c321112de7fe3fa4e24e12ca59e (diff) | |
| download | op-kernel-dev-03fba0479600114f32d29eee74ca3eaa364606bf.zip op-kernel-dev-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/ipv4/tcp_highspeed.c')
| -rw-r--r-- | 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..43d624e5 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: |
