[Xen-devel] Problem with MTU > 1500, ifconfig segmentation fault

["Satish Raghunath" <satish_raghunath@xxxxxxxxxxx>]

Hi all,

I am using Xen 2.0.7. I have Broadcom NetXtreme BCM5704 Gigabit Ethernet (rev 02) cards which support frames greater than 1500.

However when I boot into Xen and try to set the MTU to anything higher than 1500 (e.g., 4000, 8000 etc) I get a segmentation fault. After this fault, every command fails with a segmentation fault. I saw a similar bug report posted here:

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=152

If there is a patch available for this, I would appreciate it very much if you can point me to it.

I tried setting the default MTU in $XEN/linux-2.6.11-xen0/net/ethernet/eth.c to 9000 and that allowed the interface have an MTU of 9000. But even then ping packets with large sizes would not work.

Any additionaly pointers will be highly appreciated.

Thank you,
Satish

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