diff options
| author | Paul Mackerras <paulus@samba.org> | 2008-05-09 20:12:06 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-05-09 20:12:06 +1000 |
| commit | 2a5f2e3e6cd1ce9fb3f8b186b6bc9aa1f1497a92 (patch) | |
| tree | b2306840f227972a7c9d4a2b75e516fe81358ce8 /net/ipv4/tcp_veno.c | |
| parent | 02539d71fa98d5737bb668b02286c76241e4bac9 (diff) | |
| parent | 78be76476a34a77f0ea9db2f78ba46a2b0fd5ab5 (diff) | |
Merge branch 'for-2.6.26' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge
Diffstat (limited to 'net/ipv4/tcp_veno.c')
| -rw-r--r-- | net/ipv4/tcp_veno.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/net/ipv4/tcp_veno.c b/net/ipv4/tcp_veno.c index d16689e98516..d08b2e855c22 100644 --- a/net/ipv4/tcp_veno.c +++ b/net/ipv4/tcp_veno.c @@ -119,8 +119,10 @@ static void tcp_veno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight) struct tcp_sock *tp = tcp_sk(sk); struct veno *veno = inet_csk_ca(sk); - if (!veno->doing_veno_now) - return tcp_reno_cong_avoid(sk, ack, in_flight); + if (!veno->doing_veno_now) { + tcp_reno_cong_avoid(sk, ack, in_flight); + return; + } /* limited by applications */ if (!tcp_is_cwnd_limited(sk, in_flight)) @@ -133,7 +135,8 @@ static void tcp_veno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight) */ tcp_reno_cong_avoid(sk, ack, in_flight); } else { - u32 rtt, target_cwnd; + u64 target_cwnd; + u32 rtt; /* We have enough rtt samples, so, using the Veno * algorithm, we determine the state of the network. @@ -141,8 +144,9 @@ static void tcp_veno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight) rtt = veno->minrtt; - target_cwnd = ((tp->snd_cwnd * veno->basertt) - << V_PARAM_SHIFT) / rtt; + target_cwnd = (tp->snd_cwnd * veno->basertt); + target_cwnd <<= V_PARAM_SHIFT; + do_div(target_cwnd, rtt); veno->diff = (tp->snd_cwnd << V_PARAM_SHIFT) - target_cwnd; |