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From: Kengo Sakai <kengo.sakai@atr.jp>
To: "Rémi Denis-Courmont" <remi.denis-courmont@nokia.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: [QUESTION] About IPv6 flowlabel in a TCP IPv6 Server
Date: Tue, 23 Jun 2009 11:31:03 +0900	[thread overview]
Message-ID: <4A403E67.8090906@atr.jp> (raw)
In-Reply-To: <200906221145.40481.remi.denis-courmont@nokia.com>

Hello Rémi,

Thanks for your mail.

Rémi Denis-Courmont wrote:
> On Tuesday 16 June 2009 04:37:21 ext Kengo Sakai wrote:
>> 2) Can a flowlabel be set to a sending packet in a TCP IPv6 Server?
> 
> I don't understand your question. To me, you cannot send "packets", at least 
> not directly, via TCP sockets in the first place. Userland pushes data to the 
> kernel buffers, and those buffers are segmented in some opaque (from userland) 
> way. There is certainly no 1:1 matching of send() calls to packets.

Sorry, I mistook the expression.
I have understood that the data pushed from userland is segmented into
packets in kernel.

I want to set a flowlabel to packets into which kernel segment the data
which TCP IPv6 Server send(2) or write(2).
But I can't do it.

Do you have any idea?

Thanks,
Kengo


      reply	other threads:[~2009-06-23  2:33 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-16  1:37 [QUESTION] About IPv6 flowlabel in a TCP IPv6 Server Kengo Sakai
2009-06-22  8:45 ` Rémi Denis-Courmont
2009-06-23  2:31   ` Kengo Sakai [this message]

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