diff options
author | Stephen Hemminger <shemminger@linux-foundation.org> | 2007-07-26 02:49:34 -0400 |
---|---|---|
committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-31 05:27:57 -0400 |
commit | 30cfd0baf0a0c4329fff1ef4b622919297969ec8 (patch) | |
tree | 945a72f636ced1b443d894495704237e4cb7816d /include/net | |
parent | 6a302358d87fedaf7bda12b8e909265ebf1ce674 (diff) |
[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 'include/net')
-rw-r--r-- | include/net/tcp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 8b404b1ef7c8..c209361ab74a 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h | |||
@@ -660,7 +660,7 @@ struct tcp_congestion_ops { | |||
660 | /* new value of cwnd after loss (optional) */ | 660 | /* new value of cwnd after loss (optional) */ |
661 | u32 (*undo_cwnd)(struct sock *sk); | 661 | u32 (*undo_cwnd)(struct sock *sk); |
662 | /* hook for packet ack accounting (optional) */ | 662 | /* hook for packet ack accounting (optional) */ |
663 | void (*pkts_acked)(struct sock *sk, u32 num_acked, ktime_t last); | 663 | void (*pkts_acked)(struct sock *sk, u32 num_acked, s32 rtt_us); |
664 | /* get info for inet_diag (optional) */ | 664 | /* get info for inet_diag (optional) */ |
665 | void (*get_info)(struct sock *sk, u32 ext, struct sk_buff *skb); | 665 | void (*get_info)(struct sock *sk, u32 ext, struct sk_buff *skb); |
666 | 666 | ||