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

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Date:	Fri, 9 Nov 2012 10:23:12 -0800
From:	Vijay Subramanian <subramanian.vijay@...il.com>
To:	Vincent Li <vincent.mc.li@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: How to compile tcp fast open client app with kernel tfo client
 support ?

> htmlgettfo.c: In function 'get_page_thread':
> htmlgettfo.c:109: error: 'MSG_FASTOPEN' undeclared (first use in this function)
> htmlgettfo.c:109: error: (Each undeclared identifier is reported only once
> htmlgettfo.c:109: error: for each function it appears in.)
>
> I have the 3.6.0 kernel header file package installed
> /usr/src/linux-headers-3.6.0-custom, the user space include file
> /usr/include/linux is original one coming with 10.0.4 distro kernel
>
> I am suspecting I don't have proper linux header file that has
> MSG_FASTOPEN declared in user space. can anyone shed a light on how to
> get MSG_FASTOPEN supported and compiled in client code properly?
>

Vincent ,
You can try adding the following to the client code.

#define MSG_FASTOPEN    0x20000000

This is missing still from user space header files I presume.

Vijay
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