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| author | Stephen Hemminger <shemminger@linux-foundation.org> | 2007-07-25 23:49:34 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-31 02:27:57 -0700 |
| commit | 30cfd0baf0a0c4329fff1ef4b622919297969ec8 (patch) | |
| tree | 945a72f636ced1b443d894495704237e4cb7816d /net/ipv4/tcp_yeah.c | |
| parent | 6a302358d87fedaf7bda12b8e909265ebf1ce674 (diff) | |
| download | linux-30cfd0baf0a0c4329fff1ef4b622919297969ec8.tar.gz linux-30cfd0baf0a0c4329fff1ef4b622919297969ec8.tar.xz | |
[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_yeah.c')
| -rw-r--r-- | net/ipv4/tcp_yeah.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/tcp_yeah.c b/net/ipv4/tcp_yeah.c index c04b7c6ec702..c107fba7430e 100644 --- a/net/ipv4/tcp_yeah.c +++ b/net/ipv4/tcp_yeah.c @@ -58,7 +58,7 @@ static void tcp_yeah_init(struct sock *sk) } -static void tcp_yeah_pkts_acked(struct sock *sk, u32 pkts_acked, ktime_t last) +static void tcp_yeah_pkts_acked(struct sock *sk, u32 pkts_acked, s32 rtt_us) { const struct inet_connection_sock *icsk = inet_csk(sk); struct yeah *yeah = inet_csk_ca(sk); @@ -66,7 +66,7 @@ static void tcp_yeah_pkts_acked(struct sock *sk, u32 pkts_acked, ktime_t last) if (icsk->icsk_ca_state == TCP_CA_Open) yeah->pkts_acked = pkts_acked; - tcp_vegas_pkts_acked(sk, pkts_acked, last); + tcp_vegas_pkts_acked(sk, pkts_acked, rtt_us); } static void tcp_yeah_cong_avoid(struct sock *sk, u32 ack, |