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| author | Stephen Hemminger <shemminger@linux-foundation.org> | 2007-07-26 08:49:34 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-31 11:27:57 +0200 |
| commit | 30cfd0baf0a0c4329fff1ef4b622919297969ec8 (patch) | |
| tree | 945a72f636ced1b443d894495704237e4cb7816d /net/ipv4/tcp_vegas.h | |
| parent | Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6.23 (diff) | |
| download | linux-30cfd0baf0a0c4329fff1ef4b622919297969ec8.tar.xz linux-30cfd0baf0a0c4329fff1ef4b622919297969ec8.zip | |
[TCP]: congestion control API pass RTT in microseconds
This patch changes the API for the callback that is done after an ACK is
received. It solves a couple of issues:
* Some congestion controls want higher resolution value of RTT
(controlled by TCP_CONG_RTT_SAMPLE flag). These don't really want a ktime, but
all compute a RTT in microseconds.
* Other congestion control could use RTT at jiffies resolution.
To keep API consistent the units should be the same for both cases, just the
resolution should change.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_vegas.h')
| -rw-r--r-- | net/ipv4/tcp_vegas.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_vegas.h b/net/ipv4/tcp_vegas.h index 502fa8183634..6c0eea2f8249 100644 --- a/net/ipv4/tcp_vegas.h +++ b/net/ipv4/tcp_vegas.h @@ -17,7 +17,7 @@ struct vegas { extern void tcp_vegas_init(struct sock *sk); extern void tcp_vegas_state(struct sock *sk, u8 ca_state); -extern void tcp_vegas_pkts_acked(struct sock *sk, u32 cnt, ktime_t last); +extern void tcp_vegas_pkts_acked(struct sock *sk, u32 cnt, s32 rtt_us); extern void tcp_vegas_cwnd_event(struct sock *sk, enum tcp_ca_event event); extern void tcp_vegas_get_info(struct sock *sk, u32 ext, struct sk_buff *skb); |