Thread (6 messages) 6 messages, 3 authors, 2007-03-02

Re: [PATCH 1/2] [TCP]: Add two new spurious RTO responses to FRTO

From: David Miller <davem@davemloft.net>
Date: 2007-02-27 18:10:28

From: "Ilpo_Järvinen" <redacted>
Date: Tue, 27 Feb 2007 17:50:06 +0200 (EET)
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 <redacted>
Applied to tcp-2.6, thanks!

I tidied up the coding style of the switch statement slightly.
So that it reads like this:

		switch (sysctl_tcp_frto_response) {
		case 2:
			tcp_undo_spur_to_response(sk);
			break;
		case 1:
			tcp_conservative_spur_to_response(tp);
			break;
		default:
			tcp_ratehalving_spur_to_response(sk);
			break;
		};

Thanks again.
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