From owner-freebsd-current@FreeBSD.ORG Tue Oct 12 15:25:39 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 742C916A4CE; Tue, 12 Oct 2004 15:25:39 +0000 (GMT) Received: from athena.softcardsystems.com (mail.softcardsystems.com [12.34.136.114]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1CDA843D3F; Tue, 12 Oct 2004 15:25:39 +0000 (GMT) (envelope-from sah@softcardsystems.com) Received: from athena (athena [12.34.136.114])i9CGO3r6031585; Tue, 12 Oct 2004 11:24:03 -0500 Date: Tue, 12 Oct 2004 11:24:03 -0500 (EST) From: Sam X-X-Sender: sah@athena To: freebsd-arch@freebsd.org, freebsd-current@freebsd.org Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Subject: mbuf w/o pkthdr? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Oct 2004 15:25:39 -0000 Hello - src/sys/i386/i386/busdma_machdep.c:/^bus_dmamap_load_mbuf/ prohibits loading an mbuf that does not contain a packet header. Some drivers use this (xl), some don't (fxp). Are all packets supposed to have the M_PKTHDR flag? Why? Cheers, Sam