From owner-freebsd-net@FreeBSD.ORG Tue Nov 7 05:15:51 2006 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CB6BB16A403; Tue, 7 Nov 2006 05:15:51 +0000 (UTC) (envelope-from sivakumar.subramani@wipro.com) Received: from wip-ectls-mx1.wipro.com (wip-ectls-mx1.wipro.com [203.91.193.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id D014543D60; Tue, 7 Nov 2006 05:15:50 +0000 (GMT) (envelope-from sivakumar.subramani@wipro.com) Received: from wip-ectls-mx1.wipro.com (localhost.localdomain [127.0.0.1]) by localhost (Postfix) with ESMTP id 88DFC220452; Tue, 7 Nov 2006 10:45:57 +0530 (IST) Received: from blr-ec-bh01.wipro.com (blr-ec-bh01.wipro.com [10.201.50.91]) by wip-ectls-mx1.wipro.com (Postfix) with ESMTP id 7BE422203FA; Tue, 7 Nov 2006 10:45:57 +0530 (IST) Received: from blr-m3-msg.wipro.com ([10.114.50.99]) by blr-ec-bh01.wipro.com with Microsoft SMTPSVC(6.0.3790.1830); Tue, 7 Nov 2006 10:39:44 +0530 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Date: Tue, 7 Nov 2006 10:39:23 +0530 Message-ID: <821C7AD2A9F78942B86059792262577315B072@blr-m3-msg.wipro.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Regarding Jumbo frame implementation in bge Thread-Index: AccCKuWHHs83d+2ySZGPKZxVGjgg7Q== From: To: , X-OriginalArrivalTime: 07 Nov 2006 05:09:44.0457 (UTC) FILETIME=[F02AD790:01C7022A] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Subject: Regarding Jumbo frame implementation in bge X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 07 Nov 2006 05:15:51 -0000 Hi, =0D In bge driver, we have BGE_JUMBO_FRAMELEN defined to 9018. if_bgereg.h:#define BGE_JUMBO_FRAMELEN 9018 =0D This macro is used to allocate the memory for jumbo buffer. If I have a MTU size of 2000, still bge will allocate the jumbo buffer of size BGE_JUMBO_FRAMELEN. Instead can we make the size to be depend on the MTU. I mean instead of using BGE_JUMBO_FRAMELEN macro we can use MTU + IP header + CRC for Jumbo buffer size. =0D Any reason for allocating a hard coded 9018 size all Jumbo MTU frame (whether it is 9000 / 2000)? =0D Thanks, ~Siva The information contained in this electronic message and any attachments to= this message are intended for the exclusive use of the addressee(s) and= may contain proprietary, confidential or privileged information. If you= are not the intended recipient, you should not disseminate, distribute or= copy this e-mail. Please notify the sender immediately and destroy all= copies of this message and any attachments.=0D WARNING: Computer viruses can be transmitted via email. The recipient= should check this email and any attachments for the presence of viruses.= The company accepts no liability for any damage caused by any virus= transmitted by this email. =0D www.wipro.com