Dumb question: what was the MTU setting of the eth interface associated with port 2? Dropping jumbo frames has nothing to do with LRO - it is plain layer 2 functionality.
Boris Shpolyansky Sr. Member of Technical Staff, Applications Mellanox Technologies Inc. 350 Oakmead Parkway, Suite 100 Sunnyvale, CA 94085 Tel.: (408) 916 0014 Fax: (408) 585 0314 Cell: (408) 834 9365 www.mellanox.com -----Original Message----- From: general-boun...@lists.openfabrics.org [mailto:general-boun...@lists.openfabrics.org] On Behalf Of Shirley Ma Sent: Thursday, September 10, 2009 2:10 PM To: Roland Dreier Cc: general@lists.openfabrics.org Subject: Re: [ofa-general] mlx4 second port lro issue Hello Roland, On Thu, 2009-09-10 at 13:54 -0700, Roland Dreier wrote: > haven't seen this. But I haven't really tried. > > Are you talking about mlx4_en or ipoib with mlx4_ib? What do you mean > by lro not working -- the interface doesn't work with lro enabled, or > you just don't see aggregation of receives? > > By the way, both mlx4_en and ipoib should probably move from lro to > gro -- patches welcome. Thanks for your prompt response. The problem was seen on mlx4_en QDR. When LRO enabled, for large packet than 1500 mtu, port1 can process this packet, but port2 doesn't see this big packet at all from tcpdump trace. I wonder whether there is any FW issue since I don't think the driver handle two ports differently. Shirley _______________________________________________ general mailing list general@lists.openfabrics.org http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general _______________________________________________ general mailing list general@lists.openfabrics.org http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
