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authorIlpo Järvinen <ilpo.jarvinen@helsinki.fi>2007-02-27 13:09:49 -0500
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-26 01:23:23 -0400
commit3cfe3baaf07c9e40a75f9a70662de56df1c246a8 (patch)
tree989b2aff491b5df3aa0215f611a8c7f1360c67e9 /net/ipv4/tcp_output.c
parentc5e7af0df5d7234afd8596560d9f570cfc6c18bf (diff)
[TCP]: Add two new spurious RTO responses to FRTO
New sysctl tcp_frto_response is added to select amongst these responses: - Rate halving based; reuses CA_CWR state (default) - Very conservative; used to be the only one available (=1) - Undo cwr; undoes ssthresh and cwnd reductions (=2) The response with rate halving requires a new parameter to tcp_enter_cwr because FRTO has already reduced ssthresh and doing a second reduction there has to be prevented. In addition, to keep things nice on 80 cols screen, a local variable was added. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_output.c')
-rw-r--r--net/ipv4/tcp_output.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 3c24881f2a65..d19b2f3b70fd 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -545,7 +545,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
545 if (likely(err <= 0)) 545 if (likely(err <= 0))
546 return err; 546 return err;
547 547
548 tcp_enter_cwr(sk); 548 tcp_enter_cwr(sk, 1);
549 549
550 return net_xmit_eval(err); 550 return net_xmit_eval(err);
551 551