HEADSUP! netgraph Metadata changing.

[Kris Kennaway]

Julian Elischer wrote:
> If you don't know or care about netgraph metadata (e.g. packet priority)
> then this shouldn't worry you.
> 
> We are changing the netgraph metadata facility (in which arbitrary
> metadata can be sent with a packet through processing) to use
> the mbuf TAG facility that has been imported by sam.
> 
> Netgraph tags will use different cookies to the standard set of 
> tags imported with the code, so they will live in a separate namespace,
> however they will be handled during GC and manipulation by the standard
> tag handling code (Thanks to Sam for giving us the cookie facility).
> 
> In the checked in code there are only a couple of users of metadata, but
> there may be 3rd parties out there that use it. If so the authors should
> contact me as soon as possible to co-ordinate the changeover.

Don't forget to bump __FreeBSD_version when you make this change.

Kris