FreeBSD 4.11-RELEASE & SACK
Julian Elischer
julian at elischer.org
Sat Mar 5 00:52:55 GMT 2005
Kan Cai wrote:
>
> Greetings,
>
> I posted this question on freebsd-question list yesterday, but no
> replies. So I am just trying my luck here. Thanks in advance.
>
> I've installed the standard FreeBSD 4.11-RELEASE and have realized
> that the sysctl option for enabling SACK in TCP is not available
> (net.inet.tcp.do_sack). Additionally, the tcp_sack.c file is not in
> the /usr/src/sys/netinet so I'm guessing this indicates that I need a
> patch. Hoping to be able to use SACK in FreeBSD 4.11-RELEASE, I wanted
> to ask :
>
> 1) Is my guess correct (Do I need a patch)? Or is my kernel
> configuration file missing an option?
> 2) Assuming I need a patch, what patch is generally recommended for
> using SACK under TCP in FreeBSD 4.11-RELEASE?
the people who contributed the SACK code contrinuted it only to the 5.x
or later relases.
It would be up to someone else to the the back port to 4.x.
>
> Any help would be most appreciated. Thanks,
>
> ken
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