From mboxrd@z Thu Jan  1 00:00:00 1970
From: Kengo Sakai <kengo.sakai@atr.jp>
Subject: Re: [QUESTION] About IPv6 flowlabel in a TCP IPv6 Server
Date: Tue, 23 Jun 2009 11:31:03 +0900
Message-ID: <4A403E67.8090906@atr.jp>
References: <4A36F751.6070306@atr.jp> <200906221145.40481.remi.denis-courmont@nokia.com>
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Hello R=E9mi,

Thanks for your mail.

R=E9mi 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?
>=20
> I don't understand your question. To me, you cannot send "packets", a=
t least=20
> not directly, via TCP sockets in the first place. Userland pushes dat=
a to the=20
> kernel buffers, and those buffers are segmented in some opaque (from =
userland)=20
> 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