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authorStephen Hemminger <shemminger@linux-foundation.org>2007-07-26 02:49:34 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-31 05:27:57 -0400
commit30cfd0baf0a0c4329fff1ef4b622919297969ec8 (patch)
tree945a72f636ced1b443d894495704237e4cb7816d /net/ipv4/tcp_bic.c
parent6a302358d87fedaf7bda12b8e909265ebf1ce674 (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_bic.c')
-rw-r--r--net/ipv4/tcp_bic.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_bic.c b/net/ipv4/tcp_bic.c
index 519de091a94d..4586211e3757 100644
--- a/net/ipv4/tcp_bic.c
+++ b/net/ipv4/tcp_bic.c
@@ -206,7 +206,7 @@ static void bictcp_state(struct sock *sk, u8 new_state)
206/* Track delayed acknowledgment ratio using sliding window 206/* Track delayed acknowledgment ratio using sliding window
207 * ratio = (15*ratio + sample) / 16 207 * ratio = (15*ratio + sample) / 16
208 */ 208 */
209static void bictcp_acked(struct sock *sk, u32 cnt, ktime_t last) 209static void bictcp_acked(struct sock *sk, u32 cnt, s32 rtt)
210{ 210{
211 const struct inet_connection_sock *icsk = inet_csk(sk); 211 const struct inet_connection_sock *icsk = inet_csk(sk);
212 212