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authorIlpo Järvinen <ilpo.jarvinen@helsinki.fi>2009-02-28 04:44:37 +0000
committerDavid S. Miller <davem@davemloft.net>2009-03-02 03:00:15 -0800
commit758ce5c8d11d6fc57fe5f1dbc237aa8ff6386eac (patch)
tree45b3dff5ca179712d50cdeae45846db8ffd51caa /net/ipv4/tcp_veno.c
parent571a5dd8d01f2a7e279c502fa220a69262d73694 (diff)
downloadop-kernel-dev-758ce5c8d11d6fc57fe5f1dbc237aa8ff6386eac.zip
op-kernel-dev-758ce5c8d11d6fc57fe5f1dbc237aa8ff6386eac.tar.gz
tcp: add helper for AI algorithm
It seems that implementation in yeah was inconsistent to what other did as it would increase cwnd one ack earlier than the others do. Size benefits: bictcp_cong_avoid | -36 tcp_cong_avoid_ai | +52 bictcp_cong_avoid | -34 tcp_scalable_cong_avoid | -36 tcp_veno_cong_avoid | -12 tcp_yeah_cong_avoid | -38 = -104 bytes total Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_veno.c')
-rw-r--r--net/ipv4/tcp_veno.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/net/ipv4/tcp_veno.c b/net/ipv4/tcp_veno.c
index d08b2e8..e9bbff7 100644
--- a/net/ipv4/tcp_veno.c
+++ b/net/ipv4/tcp_veno.c
@@ -159,12 +159,7 @@ static void tcp_veno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
/* In the "non-congestive state", increase cwnd
* every rtt.
*/
- if (tp->snd_cwnd_cnt >= tp->snd_cwnd) {
- if (tp->snd_cwnd < tp->snd_cwnd_clamp)
- tp->snd_cwnd++;
- tp->snd_cwnd_cnt = 0;
- } else
- tp->snd_cwnd_cnt++;
+ tcp_cong_avoid_ai(tp, tp->snd_cwnd);
} else {
/* In the "congestive state", increase cwnd
* every other rtt.
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