From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <yocto@mindchasers.com>
Received: by yocto-www.yoctoproject.org (Postfix, from userid 118)
	id B8B69E00863; Sat, 29 Nov 2014 11:06:32 -0800 (PST)
X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on
	yocto-www.yoctoproject.org
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	version=3.3.1
X-Spam-HAM-Report: * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%
	*      [score: 0.0000]
Received: from smtp.webfaction.com (mail6.webfaction.com [74.55.86.74])
	by yocto-www.yoctoproject.org (Postfix) with ESMTP id B72A9E0082B
	for <meta-freescale@yoctoproject.org>;
	Sat, 29 Nov 2014 11:06:24 -0800 (PST)
Received: from [192.168.1.10] (unknown [68.38.40.177])
	by smtp.webfaction.com (Postfix) with ESMTP id AAD85208225C
	for <meta-freescale@yoctoproject.org>;
	Sat, 29 Nov 2014 19:06:23 +0000 (UTC)
Message-ID: <547A192E.7080209@mindchasers.com>
Date: Sat, 29 Nov 2014 14:06:22 -0500
From: Bob Cochran <yocto@mindchasers.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64;
	rv:31.0) Gecko/20100101 Thunderbird/31.2.0
MIME-Version: 1.0
To: "meta-freescale@yoctoproject.org" <meta-freescale@yoctoproject.org>
Subject: meta-fsl-ppc: questioning reason to disable reverse path filtering...
X-BeenThere: meta-freescale@yoctoproject.org
X-Mailman-Version: 2.1.13
Precedence: list
List-Id: Usage and development list for the meta-fsl-* layers
	<meta-freescale.yoctoproject.org>
List-Unsubscribe: <https://lists.yoctoproject.org/options/meta-freescale>,
	<mailto:meta-freescale-request@yoctoproject.org?subject=unsubscribe>
List-Archive: <http://lists.yoctoproject.org/pipermail/meta-freescale>
List-Post: <mailto:meta-freescale@yoctoproject.org>
List-Help: <mailto:meta-freescale-request@yoctoproject.org?subject=help>
List-Subscribe: <https://lists.yoctoproject.org/listinfo/meta-freescale>,
	<mailto:meta-freescale-request@yoctoproject.org?subject=subscribe>
X-List-Received-Date: Sat, 29 Nov 2014 19:06:32 -0000
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit

Hi,

Reverse Path filtering (RPF) is disabled by 
meta-fsl-ppc/recipes-extended/procps_%.bbappend.

The git log states: "rp_filter causes issues with VLAN interfaces."

An email patch for procps from FSL back on 3/7/13 states:

"disable rp_filter to enhance ASF IP forward performance, which is 
really fsl SDK specific."

Are both of these statements true?

If so, it looks like AS_FASTPATH is almost always disabled by default in 
the powerpc defconfigs.  Therefore, if reverse path filtering issues are 
specific to AS_FASTPATH, I suggest RPF shouldn't be disabled by default. 
  Perhaps add a comment in the drivers/net/Kconfig help for AS_FASTPATH 
that if AS_FASTPATH is enabled, then disable RPF.

Regardless, can we get a description added to this recipe append file to 
document why it exists?   And if there is no need to disable RPF in 
default configurations, can we just get rid of it?

Thanks

Bob