From owner-freebsd-net@FreeBSD.ORG  Mon Mar 19 20:06:01 2007
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
X-Original-To: freebsd-net@freebsd.org
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 07C6E16A400
	for <freebsd-net@freebsd.org>; Mon, 19 Mar 2007 20:06:01 +0000 (UTC)
	(envelope-from unixero@gmail.com)
Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.189])
	by mx1.freebsd.org (Postfix) with ESMTP id 8FABB13C4BD
	for <freebsd-net@freebsd.org>; Mon, 19 Mar 2007 20:06:00 +0000 (UTC)
	(envelope-from unixero@gmail.com)
Received: by nf-out-0910.google.com with SMTP id k27so19175nfc
	for <freebsd-net@freebsd.org>; Mon, 19 Mar 2007 13:05:59 -0700 (PDT)
DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta;
	h=domainkey-signature:received:received:date:from:to:subject:message-id:x-mailer:mime-version:content-type:content-transfer-encoding;
	b=IC9L50srjW37nVBKM1ktY6d/58kgNRjWrGZgKw7soreInHveF491brfvQyFWtXM25iHWaiIGdMWrdDv/V7i6oR5yLryBSY4s+qlNd4JBOEBloem9hkLqer4KHhzIFYLeNpPER+N+LEl0V6XM8QKvuQr8xi5bW+uVCTuQrrLMaaM=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta;
	h=received:date:from:to:subject:message-id:x-mailer:mime-version:content-type:content-transfer-encoding;
	b=dkWHqHpgzueDlZ3yKd71poyXD/vEzMmzrO7r0lX+q7RuwznBknhmkkjZNsbcX5axNB709MsJW1s/s/NN1654Uy1pJ1u1y7+KEEPuS90x1Lzw8+aqunegltdPxw765axJG01Rp7wZuS3EpkhzRGRRLD4NyQMuU9FPf/QgKGXt+vY=
Received: by 10.78.160.2 with SMTP id i2mr2616874hue.1174333026111;
	Mon, 19 Mar 2007 12:37:06 -0700 (PDT)
Received: from debian ( [87.5.215.184])
	by mx.google.com with ESMTP id k23sm57084nfc.2007.03.19.12.37.04;
	Mon, 19 Mar 2007 12:37:05 -0700 (PDT)
Date: Mon, 19 Mar 2007 20:37:09 +0100
From: Ignacio Rey <unixero@gmail.com>
To: freebsd-net@freebsd.org
Message-ID: <20070319203709.1272a470@debian>
X-Mailer: Sylpheed-Claws 1.0.5 (GTK+ 1.2.10; i486-pc-linux-gnu)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Subject: networking code and splx()
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 19 Mar 2007 20:06:01 -0000

Hello everyone,

I'm studying a bit the FreeBSD networking code.

I've read "TCP/IP illustrated vol 2" by G. R. Wright and W. R. Stevens,
which describes code in 4.4BSD-lite.

Now I'm taking a look at FreeBSD 6.2 release. Some things are different,
many others kept the same. What I'm confused about is that in 4.4BSD
there are many calls to the splx() family of functions, and I didn't see
any of them in the networking code in FreeBSD. However the 'grep' program
showed me that they are used in other parts of the kernel.


The question is: Have calls to these functions been wrapped? or are they
simply not used in this context?


Thanks in advance,

Ignacio