From owner-freebsd-hackers  Tue Feb 22 13: 4:40 2000
Delivered-To: freebsd-hackers@freebsd.org
Received: from bubba.whistle.com (bubba.whistle.com [207.76.205.7])
	by hub.freebsd.org (Postfix) with ESMTP
	id EEF0337B6D1; Tue, 22 Feb 2000 13:04:36 -0800 (PST)
	(envelope-from archie@whistle.com)
Received: (from archie@localhost)
	by bubba.whistle.com (8.9.3/8.9.2) id NAA30708;
	Tue, 22 Feb 2000 13:04:34 -0800 (PST)
From: Archie Cobbs <archie@whistle.com>
Message-Id: <200002222104.NAA30708@bubba.whistle.com>
Subject: Re: NETGRAPH patches (proposal)
In-Reply-To: <20000221143707.21862.qmail@web119.yahoomail.com> from Maksim Yevmenkin at "Feb 21, 2000 06:37:07 am"
To: m_evmenkin@yahoo.com (Maksim Yevmenkin)
Date: Tue, 22 Feb 2000 13:04:34 -0800 (PST)
Cc: freebsd-current@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG
X-Mailer: ELM [version 2.4ME+ PL54 (25)]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

Maksim Yevmenkin writes:
> Here are some small patches for NETGRAPH. 
> These are against -current cvsup'ed yesterday around 8:30pm EST.
> 
> http://home.earthlink.net/~evmax/ng.tar.gz
> 
> It also includes small test program (based on nghook).
> Compile and run it like: 
> 
> # ./a.out -a iface_name: divert
> 
> NETGRAPH option in kernel config file is required.
> 
> Here is the description. ng_ether node has two hooks ``divert'' and
> ``orphan''.
> It is possible to connect to the one of the hooks and intercept row Ethernet
> frames. But there is no clean way to intercept frame, do something and
> return it back to kernel.
> 
> This patch provides additional hook ``divertin'' (mmm... name is not good,
> i think) for each ng_ether node. 
> 
> Implementation issues
> 
> This will not work for ``orphan'' frames. Since kernel drops it anyway, i
> decided to leave it as it is. But is is possible to intercept ``orphan''
> packets, change it, and write back to ``divertin''.

The "divertin" hook is a useful idea.. after 4.0-REL we can check
something in based on your patches...

Thanks!
-Archie

___________________________________________________________________________
Archie Cobbs   *   Whistle Communications, Inc.  *   http://www.whistle.com


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message