From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 21 Feb 2001 08:45:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 21 Feb 2001 08:45:34 -0500 Received: from se1.cogenit.fr ([195.68.53.173]:26894 "EHLO se1.cogenit.fr") by vger.kernel.org with ESMTP id ; Wed, 21 Feb 2001 08:45:25 -0500 Date: Wed, 21 Feb 2001 14:45:22 +0100 From: Francois Romieu To: linux-kernel@vger.kernel.org Subject: Looking for a way to trigger error on network adapter Message-ID: <20010221144521.A18673@se1.cogenit.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0pre3us X-Organisation: Marie's fan club - I Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello, Context: HDLC PCI adapter + line at 2 Mb/s + external traffic generator that fills the line with 5 to x1000 bytes frame. I want to see how my code bahaves during rare (?) events: an overflow of the RX fifo (256 bytes) and a TX underrun. It's my understanding that if the adapter pains at DMAing, those errors should be triggered. Could I/O at a inocuous location (a well-choosen PCI register ?) be enough for that ? -- Ueimor