Hello! This is with kernel 2.6.23, plus our hacks, but the mac-vlan logic is part of the official kernel now. OS is Fedora 8. I have applied patch 1 and 3 of those sent a few weeks ago for the cxgb as well.
While testing NFS on mac-vlans on cxgb, we noticed that UDP packets have incorrect checksums when sent from the mac-vlan device on a cxgb interface to another system. When sending from a regular ethernet device (cxgb), it works fine. When we disable rx and tx UDP checksums on the mac-vlan device, it works fine. When we use e1000 interfaces (which also do rx/tx UDP checksumming), mac-vlans & NFS works fine with mac-vlan rx/tx checksumming on (the default value). So, there seems something weird about the cxgb NIC when used with mac-vlans. Perhaps it is somehow paying attention to MAC addresses when it determines if it should csum a packet or not? If you want to test it yourself, grab the latest iputils package and create MAC-VLANs like this: ip link add link eth0 name eth0#0 address 00:11:22:33:44:55 type macvlan If you would like a packet trace or any other debugging, please let me know. Thanks, Ben -- Ben Greear <[EMAIL PROTECTED]> Candela Technologies Inc http://www.candelatech.com -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
