From: Charles Bearden <Charles.F.Bearden@uth.tmc.edu>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: <netdev@vger.kernel.org>
Subject: Re: TCP keepalives ignored by kernel when the contain timestamps
Date: Fri, 10 Jun 2011 13:13:54 -0500 [thread overview]
Message-ID: <4DF25EE2.6020803@uth.tmc.edu> (raw)
In-Reply-To: <1307729054.2872.0.camel@edumazet-laptop>
On 06/10/2011 01:04 PM, Eric Dumazet wrote:
> Le vendredi 10 juin 2011 à 13:00 -0500, Charles Bearden a écrit :
>
>> Each keepalive from the Win2008 machine has a 1-byte payload 0x00. The last byte
>> of the last packet with a payload before that from the Win2008 host (at
>> 14:40:18.166394 in the paste) is also 0x00. Is that what you were asking about?
>>
>
> Yes, thats fine, thanks :)
One other thing: when tcp timestamps are disabled on the Linux (receiving) end,
so that the Win2008 host sends keepalives without timestamps, the checksums in
the keepalives are correct. It's only when the keepalives also contain
timestamps that the checksums are broken.
If you think this might be a Linux kernel issue, I'll be glad to keep working
with you, but I don't want to spam this list if my problem isn't relevant. Thank
you for your help in any case.
Chuck
next prev parent reply other threads:[~2011-06-10 18:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-09 15:26 TCP keepalives ignored by kernel when the contain timestamps Charles Bearden
2011-06-10 13:56 ` Eric Dumazet
2011-06-10 15:10 ` Charles Bearden
2011-06-10 16:07 ` Charles Bearden
2011-06-10 16:17 ` Eric Dumazet
2011-06-10 16:39 ` Charles Bearden
2011-06-10 16:54 ` Eric Dumazet
2011-06-10 18:00 ` Charles Bearden
2011-06-10 18:04 ` Eric Dumazet
2011-06-10 18:13 ` Charles Bearden [this message]
2011-06-10 18:41 ` Eric Dumazet
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4DF25EE2.6020803@uth.tmc.edu \
--to=charles.f.bearden@uth.tmc.edu \
--cc=eric.dumazet@gmail.com \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).