From owner-freebsd-net@freebsd.org Thu Oct 1 07:22:52 2015 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9AE25A0DF6D for ; Thu, 1 Oct 2015 07:22:52 +0000 (UTC) (envelope-from daemon-user@freebsd.org) Received: from phabric-backend.isc.freebsd.org (phabric-backend.isc.freebsd.org [IPv6:2001:4f8:3:ffe0:406a:0:50:2]) by mx1.freebsd.org (Postfix) with ESMTP id 8756D12E9 for ; Thu, 1 Oct 2015 07:22:52 +0000 (UTC) (envelope-from daemon-user@freebsd.org) Received: by phabric-backend.isc.freebsd.org (Postfix, from userid 1346) id 841C5331FB2B; Thu, 1 Oct 2015 07:22:52 +0000 (UTC) Date: Thu, 1 Oct 2015 07:22:52 +0000 To: freebsd-net@freebsd.org From: "lakshmi.n_msystechnologies.com (LN)" Reply-to: D1986+325+381818416dc12ca2@reviews.freebsd.org Subject: [Differential] [Commented On] D1986: Teach lagg(4) to change MTU Message-ID: <6fc6c359fa75c7ac51a52c10fda12fad@localhost.localdomain> X-Priority: 3 X-Phabricator-Sent-This-Message: Yes X-Mail-Transport-Agent: MetaMTA X-Auto-Response-Suppress: All X-Phabricator-Mail-Tags: , Thread-Topic: D1986: Teach lagg(4) to change MTU X-Herald-Rules: none X-Phabricator-To: X-Phabricator-To: X-Phabricator-Cc: X-Phabricator-Cc: X-Phabricator-Cc: X-Phabricator-Cc: Precedence: bulk In-Reply-To: References: Thread-Index: ODZhMzNlYThiYzMxOTgzYmRhMDE5M2Q2Yzk4IFYM30w= MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="utf-8" X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Oct 2015 07:22:52 -0000 lakshmi.n_msystechnologies.com added a subscriber: lakshmi.n_msystechnologies.com. lakshmi.n_msystechnologies.com added a comment. We (Panasas) tried reproducing the problem by applying the patch and enabled WITNESS in freebsd stable (10.1) kernel. While testing with this patched kernel, LOR not observed on ixl and igb ports. Based on the LOR logs mentioned earlier, the issue seems to be observed on device specific driver like em (e1000). We tried doing code analysis on em driver and could not find anything obvious. Our platform do not use em driver anymore. The issue seems to be on device specific driver and not the lagg driver changes that we introduced. So, we kindly request you to accept these changes to mainline. REPOSITORY rS FreeBSD src repository REVISION DETAIL https://reviews.freebsd.org/D1986 EMAIL PREFERENCES https://reviews.freebsd.org/settings/panel/emailpreferences/ To: rpokala-panasas.com, rstone Cc: lakshmi.n_msystechnologies.com, emaste, ae, freebsd-net-list