netdev - Re: How to compile tcp fast open client app with kernel tfo client support ?

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Message-ID: <CAK3+h2xAqjs8CvkcwXiFryyQhDnohsN7-0KfQVjpegZh_AD1eg@mail.gmail.com>
Date:	Fri, 9 Nov 2012 12:17:30 -0800
From:	Vincent Li <vincent.mc.li@...il.com>
To:	Yuchung Cheng <ycheng@...gle.com>
Cc:	Vijay Subramanian <subramanian.vijay@...il.com>,
	netdev@...r.kernel.org
Subject: Re: How to compile tcp fast open client app with kernel tfo client
 support ?

> Hi Vincent,
>
> Note that MSG_FASTOPEN flag should be used only once. Subsequent
> sendto(MSG_FASTOPEN) == connect() on connected sockets. You can verify
> if the fast open is successful by checking a bit in TCP_INFO.
> http://patchwork.o zlabs.org/patch/192883/ if you are running a fresh
> netdev build.
>
> I'll submit a patch to update the man page on MSG_FASTOPEN too.
>
> Yuchung
>

I have tried to run fresh build net-next, for some reason the build
stops ssh service from starting up, tried 3.7.0-rc4 too, same issue. I
don't know if it is new kernel bug or ubuntu upstart bug, but that is
another issue.

I will study the tcp fast open more, thanks.

Vincent
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