From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 10 Aug 2001 09:52:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 10 Aug 2001 09:52:19 -0400 Received: from cc885639-a.flushing1.mi.home.com ([24.182.96.34]:42253 "HELO caesar.lynix.com") by vger.kernel.org with SMTP id ; Fri, 10 Aug 2001 09:52:15 -0400 Date: Fri, 10 Aug 2001 09:53:13 +0000 From: Subba Rao To: Linux Kernel Subject: Half Duplex and Zero Copy IP Message-ID: <20010810095313.A6219@home.com> Reply-To: Subba Rao Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello, I have 2 3Com NICs on my system. They are 3c905C Tornado PCI cards. The drivers are compiled into the kernel (Slackware 8.0 with kernel 2.4.7). One of the interfaces will be used as a sniffer interface (without IP address) and a very high traffic pipes. I do not wish to loose any packets coming to this interface. Is it better if I initialize the interface in HALF DUPLEX mode? If yes, how do I set the card to HALF DUPLEX mode? How can I find out the HW (NIC) settings on the system? Another question about 3Com NICs, do they perform zero-copy IP? I read that the performance improves a lot WITHOUT zero-copy IP. Thanks for any info. -- Subba Rao subba9@home.com http://members.home.net/subba9/ GPG public key ID 27FC9217 Key fingerprint = 2B4C 498E 1860 5A2B 6570 5852 7527 882A 27FC 9217