From: "David S. Miller" <davem@davemloft.net>
To: Stephen Hemminger <shemminger@osdl.org>
Cc: michael.vittrup.larsen@ericsson.com, netdev@oss.sgi.com
Subject: Re: [PATCH] tcp: efficient port randomisation (revised)
Date: Tue, 30 Nov 2004 21:46:43 -0800 [thread overview]
Message-ID: <20041130214643.7b72300e.davem@davemloft.net> (raw)
In-Reply-To: <20041117153025.160eaa04@zqx3.pdx.osdl.net>
On Wed, 17 Nov 2004 15:30:25 -0800
Stephen Hemminger <shemminger@osdl.org> wrote:
> Here is a more conservative version of earlier patch vthat keeps the
> same port rover locking and global port rover. This randomizes TCP
> ephemeral ports of incoming connections using variation of existing
> sequence number hash.
>
> Thanks to original author Michael Larsen.
> http://www.ietf.org/internet-drafts/draft-larsen-tsvwg-port-randomisation-00.txt
>
> It behaves correctly if someone is perverse and sets low > high
> and it separates the outgoing port rover (tcp_port_rover) from the
> incoming port rover (start_rover).
I'm fine with this patch semantically. What do the
before/after microbenchmarks look like? We're adding
a MD4 transform plus a modulus for every local port
select operation.
next prev parent reply other threads:[~2004-12-01 5:46 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20041027092531.78fe438c@guest-251-240.pdx.osdl.net>
[not found] ` <200410291048.01955.michael.vittrup.larsen@ericsson.com>
2004-10-29 17:28 ` [PATCH] tcp: efficient port randomisation Stephen Hemminger
2004-11-01 9:58 ` Michael Vittrup Larsen
2004-11-01 17:20 ` Stephen Hemminger
2004-11-02 7:54 ` Michael Vittrup Larsen
2004-11-04 18:01 ` Stephen Hemminger
2004-11-05 10:03 ` Michael Vittrup Larsen
2004-11-17 23:30 ` [PATCH] tcp: efficient port randomisation (revised) Stephen Hemminger
2004-11-19 7:38 ` Michael Vittrup Larsen
2004-12-01 5:46 ` David S. Miller [this message]
[not found] ` <20041201152446.3a0d5ce3@dxpl.pdx.osdl.net>
[not found] ` <20041201204622.7b760400.davem@davemloft.net>
2004-12-02 21:49 ` Stephen Hemminger
2004-12-02 21:52 ` David S. Miller
2004-12-02 22:51 ` Stephen Hemminger
2004-12-02 23:01 ` Stephen Hemminger
2004-12-04 5:42 ` Stephen Hemminger
2004-12-06 8:18 ` Michael Vittrup Larsen
2004-12-06 17:42 ` [PATCH] tcp: efficient port randomisation (rev 3) Stephen Hemminger
2004-12-09 7:55 ` David S. Miller
2004-12-11 1:09 ` [PATCH] tcp: efficient port randomistion " Stephen Hemminger
2004-12-20 23:39 ` David S. Miller
2005-06-22 9:17 ` Michael Vittrup Larsen
2005-06-22 16:44 ` Stephen Hemminger
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