svn commit: r191255 - in head/sys: amd64/conf conf i386/conf net

[Bjoern A. Zeeb]

On Sun, 19 Apr 2009, Kip Macy wrote:

> Author: kmacy
> Date: Sun Apr 19 00:16:04 2009
> New Revision: 191255
> URL: http://svn.freebsd.org/changeset/base/191255
>
> Log:
>  - Import infrastructure for caching flows as a means of accelerating L3 and L2 lookups
>    as well as providing stateful load balancing when used with RADIX_MPATH.
>  - Currently compiled in to i386 and amd64 but disabled by default, it can be enabled at
>    runtime with 'sysctl net.inet.flowtable.enable=1'.
>
>  - Embedded users can remove it entirely from the kernel by adding 'nooption FLOWTABLE' to
>    their kernel config files.
>
>  - A minimal hookup will be added to ip_output in a subsequent commit. I would like to see
>    more review before bringing in changes that require more churn.
>
>  Supported by: Bitgravity Inc.
>
> Added:
>  head/sys/net/flowtable.c   (contents, props changed)
>  head/sys/net/flowtable.h   (contents, props changed)
> Modified:
>  head/sys/amd64/conf/DEFAULTS
   ...
>  head/sys/i386/conf/DEFAULTS
   ...
>
> Modified: head/sys/amd64/conf/DEFAULTS
> ==============================================================================
> --- head/sys/amd64/conf/DEFAULTS	Sat Apr 18 22:16:46 2009	(r191254)
> +++ head/sys/amd64/conf/DEFAULTS	Sun Apr 19 00:16:04 2009	(r191255)
> @@ -20,3 +20,5 @@ options 	GEOM_PART_BSD
> options 	GEOM_PART_EBR
> options 	GEOM_PART_EBR_COMPAT
> options 	GEOM_PART_MBR
> +
> +options		FLOWTABLE
>
> Modified: head/sys/i386/conf/DEFAULTS
> ==============================================================================
> --- head/sys/i386/conf/DEFAULTS	Sat Apr 18 22:16:46 2009	(r191254)
> +++ head/sys/i386/conf/DEFAULTS	Sun Apr 19 00:16:04 2009	(r191255)
> @@ -28,3 +28,5 @@ options 	GEOM_PART_MBR
> # enable support for native hardware
> options 	NATIVE
> device		atpic
> +
> +options		FLOWTABLE
...



I think FLOWTABLE does nto belong into DEFAULTS.  Really DEFAULTS was
meant for "You cannot boot without this" and if people start to weaken
it, DEFAULTS will soon be the new GENERIC.  That said I am not sure it
belongs to GENERIC either.

-- 
Bjoern A. Zeeb                      The greatest risk is not taking one.