Re: [PATCH 8/25]: Honour initial RTT estimate

[Ian McDonald]

On 3/22/07, Gerrit Renker <[EMAIL PROTECTED]> wrote:

[CCID 3]: Honour initial RTT estimate

This is a small optimisation which improves the accuracy of TX
RTT sampling when an initial RTT sample (e.g. from the intial
Request/Response exchange) is available.

Signed-off-by: Gerrit Renker <[EMAIL PROTECTED]>
---
 net/dccp/ccids/ccid3.c |   13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -469,28 +469,29 @@ static void ccid3_hc_tx_packet_recv(stru
                else                                   /* can not exceed 100% */
                        hctx->ccid3hctx_p = 1000000 / pinv;

-               skb_get_timestamp(skb, &now);
-
                /*
                 * Calculate new round trip sample as per [RFC 3448, 4.3] by
                 *      R_sample  =  (now - t_recvdata) - t_elapsed
                 */
+               skb_get_timestamp(skb, &now);

I can see how that optimises - shifting after the comment ;-)

Acked-by: Ian McDonald <[EMAIL PROTECTED]>
--
Web: http://wand.net.nz/~iam4
Blog: http://iansblog.jandi.co.nz
WAND Network Research Group
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