netdev - Re: [GIT] Networking

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Message-ID: <CA+55aFwmwYXzC_4q+XuEAx3ta6U-jf=NvMcAc-J+4DBxLm8Efg@mail.gmail.com>
Date:	Sun, 18 Sep 2011 12:55:06 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Markus Trippelsdorf <markus@...ppelsdorf.de>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	David Miller <davem@...emloft.net>, akpm@...ux-foundation.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [GIT] Networking

On Sun, Sep 18, 2011 at 12:48 PM, Markus Trippelsdorf
<markus@...ppelsdorf.de> wrote:
>
> The following works for me:

No it doesn't. It may *compile* for you, but it doesn't work for you.
It avoids all the other stuff that tcp_syn_flood_action() also does
(notably the printout).

The real fix looks to be either:

 - make an empty (inline/macro) cookie_v4_init_sequence() for the
non-syncookie config case

OR

 - change tcp_syn_flood_action() to have an inline wrapper that always
returns 0 for the non-syncookie config case so that the compiler can
see statically that when syncookies are disabled, it will always
return zero.

Or something like that.

Tssk. David, linux-next may not be fully operational, but by -rc6 you
shouldn't have sent me stuff like this that was even *remotely*
complex anyway.

Stop it.

                   Linus
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