HEADSUP! netgraph Metadata changing.
From: Julian Elischer (julian_at_elischer.org)
Date: 06/07/04
- Previous message: Bjoern A. Zeeb: "Re: IPSEC_ESP and if_tun failed"
- Next in thread: Gleb Smirnoff: "Re: HEADSUP! netgraph Metadata changing."
- Reply: Gleb Smirnoff: "Re: HEADSUP! netgraph Metadata changing."
- Reply: Peter Ulrich Kruppa: "Re: HEADSUP! netgraph Metadata changing."
- Reply: Kris Kennaway: "Re: HEADSUP! netgraph Metadata changing."
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Date: Sun, 6 Jun 2004 18:35:51 -0700 (PDT) To: FreeBSD current users <current@FreeBSD.ORG>
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.
For example the BW_MAN bandwith manager uses metadata to tag
packets selected by its ipfw netgraph node.
Currently the biggest user of metadata is the frame relay LMI
node that tags LMI packets with a higher priority in order to meet
timing constraints given by the standards.
In addition the ng_ksocket node adds info into metadata and I suspect
there are people using that.
julian
_______________________________________________
freebsd-net@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-net
To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
- Previous message: Bjoern A. Zeeb: "Re: IPSEC_ESP and if_tun failed"
- Next in thread: Gleb Smirnoff: "Re: HEADSUP! netgraph Metadata changing."
- Reply: Gleb Smirnoff: "Re: HEADSUP! netgraph Metadata changing."
- Reply: Peter Ulrich Kruppa: "Re: HEADSUP! netgraph Metadata changing."
- Reply: Kris Kennaway: "Re: HEADSUP! netgraph Metadata changing."
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Relevant Pages
|
