From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 29 Jun 2001 10:46:18 -0700 From: John Cagle To: linuxppc-embedded@lists.linuxppc.org Subject: 405GP network receive problem Message-ID: <20010629104618.A22541@kernel.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: ; from ghurwitz@dyndns.com on Wed, Jun 27, 2001 at 08:43:16AM -0400 Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: I am debugging a custom board design based on the 405GP and have a problem receiving lots of TCP/IP traffic (like FTP). We're using a 2.4 kernel based on Monta Vista's CDK 1.2. UDP traffic (like TFTP) works very well, but it doesn't ever have back-to-back receives, typically. The problem occurs at both 10mbit and 100Mbit. I have narrowed the problem down (using ttcp) to the following: During back-to-back receives (within microseconds) of two large (1500 bytes) TCP packets, the second packet is usually dropped by the 405GP. When I check ifconfig statistics, it shows the 1 lost packet, but also shows 2 framing errors. Has anyone else seen this type of problem with the 405GP or does anyone know what the problem might be? Thanks, John ------------------------------ John Cagle ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/