From: William Allen Simpson <william.allen.simpson@gmail.com>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org, joe@perches.com
Subject: Re: [net-next-2.6 PATCH v7 3/7 RFC] TCPCT part 1c: sysctl_tcp_cookie_size, socket option TCP_COOKIE_TRANSACTIONS
Date: Sat, 21 Nov 2009 23:40:08 -0500 [thread overview]
Message-ID: <4B08C0A8.6070302@gmail.com> (raw)
In-Reply-To: <20091121.111844.54272535.davem@davemloft.net>
David Miller wrote:
> From: William Allen Simpson <william.allen.simpson@gmail.com>
> Date: Sat, 21 Nov 2009 11:51:13 -0500
>
>> This code was based on net/ipv4/tcp_minisocks.c for syncookies.
>> Apparently, default for syncookies has been controversial.
>
> I'll have to change that, it doesn't make any sense. Thanks
> for pointing it out.
>
Once again, for the umpteenth time, I learn that existing code
proves to be a bad example to follow....
>> Would you accept always default to TCP_COOKIE_MAX?
>
> Sure, let's see what breaks.
>
Unlikely to break anything, according to studies of the subject:
Medina, A., Allman, M., and Floyd, S., "Measuring Interactions
Between Transport Protocols and Middleboxes", Proceedings 4th
ACM SIGCOMM/USENIX Conference on Internet Measurement, October
2004. http://www.icsi.berkeley.edu/pubs/networking/tbit-
Aug2004.pdf
TCPCT part 2 is much more likely to break things....
next prev parent reply other threads:[~2009-11-22 4:40 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-20 14:04 [net-next-2.6 PATCH v7 0/7 RFC] TCPCT part 1: cookie option exchange William Allen Simpson
2009-11-20 14:12 ` [net-next-2.6 PATCH v7 1/7 RFC] TCPCT part 1a: add request_values parameter for sending SYNACK William Allen Simpson
2009-11-20 17:20 ` David Miller
2009-11-20 14:23 ` [net-next-2.6 PATCH v7 2/7 RFC] TCPCT part 1b: generate Responder Cookie secret William Allen Simpson
2009-11-20 17:22 ` David Miller
2009-11-20 20:47 ` Andi Kleen
2009-11-20 20:51 ` David Miller
2009-11-21 16:09 ` William Allen Simpson
2009-11-20 14:33 ` [net-next-2.6 PATCH v7 3/7 RFC] TCPCT part 1c: sysctl_tcp_cookie_size, socket option TCP_COOKIE_TRANSACTIONS William Allen Simpson
2009-11-20 17:24 ` David Miller
2009-11-21 16:51 ` William Allen Simpson
2009-11-21 19:18 ` David Miller
2009-11-21 19:22 ` David Miller
2009-11-22 4:40 ` William Allen Simpson [this message]
2009-11-20 14:38 ` [net-next-2.6 PATCH v7 4/7 RFC] TCPCT part 1d: define TCP cookie option, extend existing struct's William Allen Simpson
2009-11-20 17:25 ` David Miller
2009-11-22 4:53 ` William Allen Simpson
2009-11-20 14:48 ` [net-next-2.6 PATCH v7 5/7 RFC] TCPCT part 1e: implement socket option TCP_COOKIE_TRANSACTIONS William Allen Simpson
2009-11-20 17:26 ` David Miller
2009-11-20 20:54 ` Joe Perches
2009-11-22 6:25 ` William Allen Simpson
2009-11-22 7:10 ` Joe Perches
2009-11-23 11:16 ` William Allen Simpson
2009-11-23 17:25 ` Joe Perches
2009-11-23 17:49 ` David Miller
2009-11-23 0:31 ` David Miller
2009-11-23 18:28 ` [net-next-2.6 PATCH] net/ipv4: Move && and || to end of previous line Joe Perches
2009-11-23 18:31 ` David Miller
2009-11-23 18:38 ` Joe Perches
2009-11-23 18:41 ` David Miller
2009-11-29 21:00 ` [PATCH net-next-2.6 PATCH] net: " Joe Perches
2009-11-30 0:55 ` David Miller
2009-11-30 17:28 ` Stephen Hemminger
2009-11-30 17:57 ` Joe Perches
2009-11-30 21:00 ` David Miller
2009-12-01 4:13 ` [PATCH] drivers/block/floppy.c: stylistic cleanups Joe Perches
2009-12-01 16:45 ` Stephen Hemminger
2009-12-01 19:09 ` Bartlomiej Zolnierkiewicz
2009-12-01 17:36 ` Marcin Slusarz
2009-12-01 17:46 ` Joe Perches
2009-12-01 18:39 ` Bartlomiej Zolnierkiewicz
2009-12-03 17:58 ` [PATCH net-next-2.6] drivers/net: Move && and || to end of previous line Joe Perches
2009-12-03 20:40 ` David Miller
2009-12-04 13:10 ` Brice Goglin
2009-12-04 17:21 ` Joe Perches
2009-12-05 12:43 ` William Allen Simpson
2009-12-05 17:50 ` Joe Perches
2009-12-05 22:05 ` Jarek Poplawski
2009-12-06 3:36 ` William Allen Simpson
2009-12-05 22:21 ` David Miller
2009-12-06 3:00 ` William Allen Simpson
2009-12-06 17:01 ` Jonathan Corbet
2009-12-04 22:42 ` David Miller
2009-11-23 22:08 ` [net-next-2.6 PATCH] net/ipv4: " Ilpo Järvinen
2009-11-23 22:14 ` Joe Perches
2009-11-23 22:32 ` Ilpo Järvinen
2009-11-23 18:58 ` [net-next-2.6 PATCH] net/ipv6: " Joe Perches
2009-11-24 22:53 ` David Miller
2009-11-23 19:49 ` [net-next-2.6 PATCH] net/ipv[46]/netfilter: " Joe Perches
2009-11-23 22:20 ` Patrick McHardy
2009-11-20 14:55 ` [net-next-2.6 PATCH v7 6/7 RFC] TCPCT part 1f: Initiator Cookie => Responder William Allen Simpson
2009-11-20 17:29 ` David Miller
2009-11-20 15:06 ` [net-next-2.6 PATCH v7 7/7 RFC] TCPCT part 1g: Responder Cookie => Initiator William Allen Simpson
2009-11-20 17:31 ` David Miller
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