Date: Thu, 28 Sep 2017 10:20:47 -0400 From: Christopher Sean Hilton <chris@vindaloo.com> To: Dimitry Andric <dim@FreeBSD.org> Cc: freebsd-stable@freebsd.org Subject: Re: Bind9 + TCP_FASTOPEN => no rndc Message-ID: <20170928142047.dgzji5mdic632u7w@csh-desktop-vm00.loopone.com> In-Reply-To: <5CF82983-FDA1-4F83-9D47-D36845A12B97@FreeBSD.org> References: <20170927173525.bspia3tpcu35yng3@kessel.vindaloo.com> <5CF82983-FDA1-4F83-9D47-D36845A12B97@FreeBSD.org>
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On Wed, Sep 27, 2017 at 09:17:29PM +0000, Dimitry Andric wrote:
> On 27 Sep 2017, at 19:35, Christopher Sean Hilton <chris@vindaloo.com> wrote:
> >
> > I'm trying to configure bind 9.11 as a nameserver on FreeBSD
> > 11-STABLE. When the bind9 port compile it enables TCP_FASTOPEN but the
> > changes haven't yet been baked into the GENERIC Kernel. I can't find a
> > way to disable the use of TCP_FASTOPEN in bind at startup. Is the only
> > way to fix this problem to build a new kernel with TCP_FASTOPEN
> > enabled?
>
> It looks like bind enables use of TCP_FASTOPEN whenever its configure
> script finds the define in the system headers. But it does not check
> whether the functionality actually works with setsockopt.
>
> In any case, the message is harmless noise, as any errors are ignored:
>
> #if defined(ISC_PLATFORM_HAVETFO) && defined(TCP_FASTOPEN)
> #ifdef __APPLE__
> backlog = 1;
> #else
> backlog = backlog / 2;
> if (backlog == 0)
> backlog = 1;
> #endif
> if (setsockopt(sock->fd, IPPROTO_TCP, TCP_FASTOPEN,
> (void *)&backlog, sizeof(backlog)) < 0) {
> isc__strerror(errno, strbuf, sizeof(strbuf));
> UNEXPECTED_ERROR(__FILE__, __LINE__,
> "setsockopt(%d, TCP_FASTOPEN) failed with %s",
> sock->fd, strbuf);
> /* TCP_FASTOPEN is experimental so ignore failures */
> }
> #endif
>
Great,
I assumed that the FASTOPEN failure was related to the inablity to
open the rndc socket. I'll have to debug the rndc socket seperately.
Thanks for help!
-- Chris
--
Chris
__o "All I was trying to do was get home from work."
_`\<,_ -Rosa Parks
___(*)/_(*)____.___o____..___..o...________ooO..._____________________
Christopher Sean Hilton [chris/at/vindaloo/dot/com]
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