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 /net/ipv4/tcp_htcp.c | |
| 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 'net/ipv4/tcp_htcp.c')
| -rw-r--r-- | net/ipv4/tcp_htcp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_htcp.c b/net/ipv4/tcp_htcp.c index 08a02e6045c9..fa61663ace3b 100644 --- a/net/ipv4/tcp_htcp.c +++ b/net/ipv4/tcp_htcp.c | |||
| @@ -98,7 +98,7 @@ static inline void measure_rtt(struct sock *sk) | |||
| 98 | } | 98 | } |
| 99 | } | 99 | } |
| 100 | 100 | ||
| 101 | static void measure_achieved_throughput(struct sock *sk, u32 pkts_acked, ktime_t last) | 101 | static void measure_achieved_throughput(struct sock *sk, u32 pkts_acked, s32 rtt) |
| 102 | { | 102 | { |
| 103 | const struct inet_connection_sock *icsk = inet_csk(sk); | 103 | const struct inet_connection_sock *icsk = inet_csk(sk); |
| 104 | const struct tcp_sock *tp = tcp_sk(sk); | 104 | const struct tcp_sock *tp = tcp_sk(sk); |