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[DCCP] CCID2: Initialize ssthresh to infinity

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Initialize the slow-start threshold to infinity.  This way, upon connection
initiation, slow-start will be exited only upon a packet loss.  This patch will
allow connections to quickly gain speed.

Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrea Bittau 2006-09-19 13:07:20 -07:00 committed by David S. Miller
parent 29651cda97
commit d458c25ce2
2 changed files with 6 additions and 3 deletions
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7
net/dccp/ccids/ccid2.c
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@ -678,9 +678,12 @@ static int ccid2_hc_tx_init(struct ccid *ccid, struct sock *sk)
int seqcount = ccid2_seq_len;
int i;
/* XXX init variables with proper values */
hctx->ccid2hctx_cwnd = 1;
hctx->ccid2hctx_ssthresh = 10;
/* Initialize ssthresh to infinity. This means that we will exit the
* initial slow-start after the first packet loss. This is what we
* want.
*/
hctx->ccid2hctx_ssthresh = ~0;
hctx->ccid2hctx_numdupack = 3;
/* XXX init ~ to window size... */

2
net/dccp/ccids/ccid2.h
View file

@ -50,7 +50,7 @@ struct ccid2_hc_tx_sock {
int ccid2hctx_cwnd;
int ccid2hctx_ssacks;
int ccid2hctx_acks;
int ccid2hctx_ssthresh;
unsigned int ccid2hctx_ssthresh;
int ccid2hctx_pipe;
int ccid2hctx_numdupack;
struct ccid2_seq *ccid2hctx_seqbuf;