From owner-freebsd-hackers@FreeBSD.ORG Thu Feb 12 01:12:33 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 75BB216A4CE; Thu, 12 Feb 2004 01:12:33 -0800 (PST) Received: from digitalme.com (pop.digitalme.com [193.97.97.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6873E43D1D; Thu, 12 Feb 2004 01:12:33 -0800 (PST) (envelope-from dkt@digitalme.com) Received: from dkt [210.0.207.157] by digitalme.com with NIMS ModWeb Module; Thu, 12 Feb 2004 17:12:32 +0800 From: Dung Patrick To: freebsd-hackers@freebsd.org, Date: Thu, 12 Feb 2004 17:12:32 +0800 X-Mailer: NIMS ModWeb Module X-Sender: dkt MIME-Version: 1.0 Message-ID: <1076577152.c8c39c40dkt@digitalme.com> Content-Type: text/plain; charset="BIG5" Content-Transfer-Encoding: quoted-printable cc: gallatin@FreeBSD.ORG Subject: Zero copy sockets question X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Feb 2004 09:12:33 -0000 Hi I have read http://people.freebsd.org/~ken/zero_copy/ To correctly use zero copy receive, it seems it need to set the MTU to: have to be at least page sized, and be aligned on page boundaries. So is the default MTU for ethernet network card 1500 works? Thank you in advance. Patrick