Date: Thu, 8 Sep 2005 21:41:06 -0400 From: "Matt Emmerton" <matt@gsicomp.on.ca> To: "Marcin Jessa" <lists@yazzy.org>, <freebsd-net@freebsd.org> Subject: Re: net.inet.ip.forwarding and net.inet.ip.fastforwarding Message-ID: <004701c5b4df$9207d260$1200a8c0@gsicomp.on.ca> References: <20050908221115.038c3abd.lists@yazzy.org>
next in thread | previous in thread | raw e-mail | index | archive | help
> Hi guys.
>
> What's the difference between net.inet.ip.forwarding and
net.inet.ip.fastforwarding ?
> What's the role of net.inet.ip.fastforwarding ?
>From inet(4):
IPCTL_FORWARDING (ip.forwarding) Boolean: enable/disable
forwarding
of IP packets. Defaults to off.
IPCTL_FASTFORWARDING (ip.fastforwarding) Boolean: enable/disable the
use
of fast IP forwarding code. Defaults to off.
When
fast forwarding is enabled, IP packets are for-
warded directly to the appropriate network inter-
face with a minimal validity checking, which
greatly improves the throughput. On the other
hand, they bypass the standard procedures, such
as
IP option processing and ipfirewall(4) checking.
It is not guaranteed that every packet will be
fast-forwarded.
--
Matt Emmerton
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?004701c5b4df$9207d260$1200a8c0>