From owner-svn-src-head@FreeBSD.ORG  Thu Nov 21 00:07:09 2013
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 67CBCE2D;
 Thu, 21 Nov 2013 00:07:09 +0000 (UTC)
Received: from mail-qe0-x235.google.com (mail-qe0-x235.google.com
 [IPv6:2607:f8b0:400d:c02::235])
 (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id C7EDF236D;
 Thu, 21 Nov 2013 00:07:08 +0000 (UTC)
Received: by mail-qe0-f53.google.com with SMTP id cy11so6858980qeb.12
 for <multiple recipients>; Wed, 20 Nov 2013 16:07:07 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=mime-version:sender:in-reply-to:references:date:message-id:subject
 :from:to:cc:content-type;
 bh=KajDMffiIXncp1WKPF9oXTEogDIzTZoJnsZewsmr2v8=;
 b=bb5uCOqzwFDPLeDtWrLPQHTspQiCQw/FjzDGq5dn2zznM8FsTnKl3FJ07qJtLqm3rp
 LdBs86y1eJy/W/dqUUskphKO8PC474dmlUkIX18/qZBCwxjes6SLZ6kD6pDvGgy/h5bI
 dYHKtz2iy1z+5n473RgGIkMOHnG1V47UcdKnS30VRYU3CvvdK17JzY472PAwazvv4eWc
 +UdSxZ4R9tlbgJaky1FNSfTW5XkBKWsoxWRmFAnvbQPe3Ug5fBZs1S37ugy80BjRPd60
 B0eAUBElEVAaEEwafM5IAh2qOplByAReAvVzbD7QjT5KFbjcJc8y9iK+C1IRVHBkFhLO
 uD6A==
MIME-Version: 1.0
X-Received: by 10.224.12.10 with SMTP id v10mr6394090qav.98.1384992427830;
 Wed, 20 Nov 2013 16:07:07 -0800 (PST)
Sender: adrian.chadd@gmail.com
Received: by 10.224.207.66 with HTTP; Wed, 20 Nov 2013 16:07:07 -0800 (PST)
In-Reply-To: <20131121000245.GA30549@onelab2.iet.unipi.it>
References: <201311182258.rAIMwEFd048783@svn.freebsd.org>
 <CAJ-VmomjQrq39jafTTGQA_EJLSi5j+NB=g1sLwCK-KaEfgwrbw@mail.gmail.com>
 <023E719B-1059-4670-8556-EBAC18A2F007@freebsd.org>
 <20131121000245.GA30549@onelab2.iet.unipi.it>
Date: Wed, 20 Nov 2013 16:07:07 -0800
X-Google-Sender-Auth: WL_16bDMg3EIC-et8hOOltYtOIc
Message-ID: <CAJ-Vmoniz70ziNCickHE8AHVfO95viuk_mO4q8XwD1HH=NxRSQ@mail.gmail.com>
Subject: Re: svn commit: r258328 - head/sys/net
From: Adrian Chadd <adrian@freebsd.org>
To: Luigi Rizzo <rizzo@iet.unipi.it>
Content-Type: text/plain; charset=ISO-8859-1
Cc: "src-committers@freebsd.org" <src-committers@freebsd.org>,
 FreeBSD Net <freebsd-net@freebsd.org>,
 "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>,
 George Neville-Neil <gnn@freebsd.org>,
 "freebsd-arch@freebsd.org" <freebsd-arch@freebsd.org>,
 "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.16
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
 <svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head/>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 21 Nov 2013 00:07:09 -0000

Hi,

We should migrate drivers to use a multi-input method where it's
appropriate. It's the same pain as if_transmit() is/was.

I'd really like to avoid having hacky solutions like mbufs with magic
types. If we're going down that path, we should create a correct
inline messaging mechanism that includes arbitrary messages in the
stream, where some may or may not be mbufs. Magic mbufs just makes me
want to tear out my eyes a little.

So, the reason I'd like to back it out is because we should be doing
it via a multi method with some type that represents an mbuf list. If
George doesn't mind, I'll add a multi input method, move this stuff
into it, and make ether_input just be single frames.



-adrian